diff --git a/.appveyor.yml b/.appveyor.yml
index 9a2eef767..781ad4a4b 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,3 +1,10 @@
+skip_commits:
+  files:
+    - ".github/**/*"
+    - ".gitmodules"
+    - "docs/**/*"
+    - "wheels/**/*"
+
 version: '{build}'
 clone_folder: c:\pillow
 init:
@@ -6,50 +13,48 @@ init:
 # Uncomment previous line to get RDP access during the build.
 
 environment:
+  COVERAGE_CORE: sysmon
   EXECUTABLE: python.exe
   TEST_OPTIONS:
   DEPLOY: YES
   matrix:
-  - PYTHON: C:/Python311-x64
-    ARCHITECTURE: x64
+  - PYTHON: C:/Python313
+    ARCHITECTURE: x86
     APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2022
-  - PYTHON: C:/Python38-x64
-    ARCHITECTURE: x64
-    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+  - PYTHON: C:/Python39-x64
+    ARCHITECTURE: AMD64
+    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
 
 
 install:
 - '%PYTHON%\%EXECUTABLE% --version'
-- curl -fsSL -o pillow-depends.zip https://github.com/python-pillow/pillow-depends/archive/main.zip
+- '%PYTHON%\%EXECUTABLE% -m pip install --upgrade pip'
 - curl -fsSL -o pillow-test-images.zip https://github.com/python-pillow/test-images/archive/main.zip
-- 7z x pillow-depends.zip -oc:\
 - 7z x pillow-test-images.zip -oc:\
-- mv c:\pillow-depends-main c:\pillow-depends
 - xcopy /S /Y c:\test-images-main\* c:\pillow\tests\images
-- 7z x ..\pillow-depends\nasm-2.16.01-win64.zip -oc:\
-- choco install ghostscript --version=10.0.0.20230317
-- path c:\nasm-2.16.01;C:\Program Files\gs\gs10.00.0\bin;%PATH%
+- curl -fsSL -o nasm-win64.zip https://raw.githubusercontent.com/python-pillow/pillow-depends/main/nasm-2.16.03-win64.zip
+- 7z x nasm-win64.zip -oc:\
+- choco install ghostscript --version=10.4.0
+- path c:\nasm-2.16.03;C:\Program Files\gs\gs10.04.0\bin;%PATH%
 - cd c:\pillow\winbuild\
 - ps: |
-        c:\python38\python.exe c:\pillow\winbuild\build_prepare.py -v --depends=C:\pillow-depends\
+        c:\python39\python.exe c:\pillow\winbuild\build_prepare.py -v --depends=C:\pillow-depends\
         c:\pillow\winbuild\build\build_dep_all.cmd
         $host.SetShouldExit(0)
 - path C:\pillow\winbuild\build\bin;%PATH%
 
 build_script:
-- ps: |
-        c:\pillow\winbuild\build\build_pillow.cmd install
-        $host.SetShouldExit(0)
 - cd c:\pillow
+- winbuild\build\build_env.cmd
+- '%PYTHON%\%EXECUTABLE% -m pip install -v -C raqm=vendor -C fribidi=vendor .'
 - '%PYTHON%\%EXECUTABLE% selftest.py --installed'
 
 test_script:
 - cd c:\pillow
-- '%PYTHON%\%EXECUTABLE% -m pip install pytest pytest-cov pytest-timeout'
+- '%PYTHON%\%EXECUTABLE% -m pip install pytest pytest-cov pytest-timeout defusedxml ipython numpy olefile pyroma'
 - c:\"Program Files (x86)"\"Windows Kits"\10\Debuggers\x86\gflags.exe /p /enable %PYTHON%\%EXECUTABLE%
-- '%PYTHON%\%EXECUTABLE% -c "from PIL import Image"'
-- '%PYTHON%\%EXECUTABLE% -m pytest -vx --cov PIL --cov Tests --cov-report term --cov-report xml Tests'
-#- '%PYTHON%\%EXECUTABLE% test-installed.py -v -s %TEST_OPTIONS%' TODO TEST_OPTIONS with pytest?
+- path %PYTHON%;%PATH%
+- .ci\test.cmd
 
 after_test:
 - curl -Os https://uploader.codecov.io/latest/windows/codecov.exe
@@ -62,18 +67,15 @@ cache:
 - '%LOCALAPPDATA%\pip\Cache'
 
 artifacts:
-- path: pillow\dist\*.egg
+- path: pillow\*.egg
   name: egg
-- path: pillow\dist\*.wheel
+- path: pillow\*.whl
   name: wheel
 
 before_deploy:
   - cd c:\pillow
-  - '%PYTHON%\%EXECUTABLE% -m pip install wheel'
-  - cd c:\pillow\winbuild\
-  - c:\pillow\winbuild\build\build_pillow.cmd bdist_wheel
-  - cd c:\pillow
-  - ps: Get-ChildItem .\dist\*.* | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
+  - '%PYTHON%\%EXECUTABLE% -m pip wheel -v -C raqm=vendor -C fribidi=vendor .'
+  - ps: Get-ChildItem .\*.whl | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
 
 deploy:
   provider: S3
diff --git a/.ci/install.sh b/.ci/install.sh
index 6e87d386d..e85e6bdc5 100755
--- a/.ci/install.sh
+++ b/.ci/install.sh
@@ -21,16 +21,16 @@ set -e
 
 if [[ $(uname) != CYGWIN* ]]; then
     sudo apt-get -qq install libfreetype6-dev liblcms2-dev python3-tk\
-                             ghostscript libffi-dev libjpeg-turbo-progs libopenjp2-7-dev\
+                             ghostscript libjpeg-turbo-progs libopenjp2-7-dev\
                              cmake meson imagemagick libharfbuzz-dev libfribidi-dev\
-                             sway wl-clipboard
+                             sway wl-clipboard libopenblas-dev
 fi
 
 python3 -m pip install --upgrade pip
 python3 -m pip install --upgrade wheel
-PYTHONOPTIMIZE=0 python3 -m pip install cffi
 python3 -m pip install coverage
 python3 -m pip install defusedxml
+python3 -m pip install ipython
 python3 -m pip install olefile
 python3 -m pip install -U pytest
 python3 -m pip install -U pytest-cov
@@ -38,13 +38,19 @@ python3 -m pip install -U pytest-timeout
 python3 -m pip install pyroma
 
 if [[ $(uname) != CYGWIN* ]]; then
-    # TODO Remove condition when NumPy supports 3.12
-    if ! [ "$GHA_PYTHON_VERSION" == "3.12-dev" ]; then python3 -m pip install numpy ; fi
+    python3 -m pip install numpy
 
     # PyQt6 doesn't support PyPy3
-    if [[ "$GHA_PYTHON_VERSION" != "3.12-dev" && $GHA_PYTHON_VERSION == 3.* ]]; then
+    if [[ $GHA_PYTHON_VERSION == 3.* ]]; then
         sudo apt-get -qq install libegl1 libxcb-cursor0 libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-shape0 libxkbcommon-x11-0
-        python3 -m pip install pyqt6
+        # TODO Update condition when pyqt6 supports free-threading
+        if ! [[ "$PYTHON_GIL" == "0" ]]; then python3 -m pip install pyqt6 ; fi
+    fi
+
+    # Pyroma uses non-isolated build and fails with old setuptools
+    if [[ $GHA_PYTHON_VERSION == 3.9 ]]; then
+        # To match pyproject.toml
+        python3 -m pip install "setuptools>=67.8"
     fi
 
     # webp
diff --git a/.ci/requirements-cibw.txt b/.ci/requirements-cibw.txt
new file mode 100644
index 000000000..c4511439c
--- /dev/null
+++ b/.ci/requirements-cibw.txt
@@ -0,0 +1 @@
+cibuildwheel==2.21.3
diff --git a/.ci/requirements-mypy.txt b/.ci/requirements-mypy.txt
new file mode 100644
index 000000000..c84a3533b
--- /dev/null
+++ b/.ci/requirements-mypy.txt
@@ -0,0 +1,12 @@
+mypy==1.13.0
+IceSpringPySideStubs-PyQt6
+IceSpringPySideStubs-PySide6
+ipython
+numpy
+packaging
+pytest
+sphinx
+types-atheris
+types-defusedxml
+types-olefile
+types-setuptools
diff --git a/.ci/test.cmd b/.ci/test.cmd
new file mode 100644
index 000000000..aafc9290c
--- /dev/null
+++ b/.ci/test.cmd
@@ -0,0 +1,3 @@
+python.exe -c "from PIL import Image"
+IF ERRORLEVEL 1 EXIT /B
+python.exe -bb -m pytest -v -x -W always --cov PIL --cov Tests --cov-report term --cov-report xml Tests
diff --git a/.ci/test.sh b/.ci/test.sh
index 8ff7c5f64..3f0ddc350 100755
--- a/.ci/test.sh
+++ b/.ci/test.sh
@@ -4,4 +4,4 @@ set -e
 
 python3 -c "from PIL import Image"
 
-python3 -bb -m pytest -v -x -W always --cov PIL --cov Tests --cov-report term Tests $REVERSE
+python3 -bb -m pytest -v -x -W always --cov PIL --cov Tests --cov-report term --cov-report xml Tests $REVERSE
diff --git a/.clang-format b/.clang-format
index be32e6d1a..143dde82c 100644
--- a/.clang-format
+++ b/.clang-format
@@ -3,12 +3,13 @@
 BasedOnStyle: Google
 AlwaysBreakAfterReturnType: All
 AllowShortIfStatementsOnASingleLine: false
-AlignAfterOpenBracket: AlwaysBreak
+AlignAfterOpenBracket: BlockIndent
 BinPackArguments: false
 BinPackParameters: false
 BreakBeforeBraces: Attach
 ColumnLimit: 88
 DerivePointerAlignment: false
+IndentGotoLabels: false
 IndentWidth: 4
 Language: Cpp
 PointerAlignment: Right
diff --git a/.coveragerc b/.coveragerc
index f71b6b1a2..a94a25678 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -2,19 +2,22 @@
 
 [report]
 # Regexes for lines to exclude from consideration
-exclude_lines =
-    # Have to re-enable the standard pragma:
-    pragma: no cover
-
-    # Don't complain if non-runnable code isn't run:
+exclude_also =
+    # Don't complain if non-runnable code isn't run
     if 0:
     if __name__ == .__main__.:
     # Don't complain about debug code
     if DEBUG:
+    # Don't complain about compatibility code for missing optional dependencies
+    except ImportError
+    if TYPE_CHECKING:
+    @abc.abstractmethod
+    # Empty bodies in protocols or abstract methods
+    ^\s*def [a-zA-Z0-9_]+\(.*\)(\s*->.*)?:\s*\.\.\.(\s*#.*)?$
+    ^\s*\.\.\.(\s*#.*)?$
 
 [run]
 omit =
     Tests/32bit_segfault_check.py
-    Tests/bench_cffi_access.py
     Tests/check_*.py
     Tests/createfontdatachunk.py
diff --git a/.editorconfig b/.editorconfig
index d74549fe2..c3627ae4f 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -13,7 +13,7 @@ indent_style = space
 
 trim_trailing_whitespace = true
 
-[*.yml]
+[*.{toml,yml}]
 # Two-space indentation
 indent_size = 2
 
diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
new file mode 100644
index 000000000..a2be59c52
--- /dev/null
+++ b/.git-blame-ignore-revs
@@ -0,0 +1,6 @@
+# Flake8
+8de95676e0fd89f2326b3953488ab66ff29cd2d0
+# Format with Black
+53a7e3500437a9fd5826bc04758f7116bd7e52dc
+# Format the C code with ClangFormat
+46b7e86bab79450ec0a2866c6c0c679afb659d17
diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index d03fcf0d9..ba2b7d8ed 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -19,7 +19,6 @@ Please send a pull request to the `main` branch. Please include [documentation](
 - Follow PEP 8.
 - When committing only documentation changes please include `[ci skip]` in the commit message to avoid running tests on AppVeyor.
 - Include [release notes](https://github.com/python-pillow/Pillow/tree/main/docs/releasenotes) as needed or appropriate with your bug fixes, feature additions and tests.
-- Do not add to the [changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst) for proposed changes, as that is updated after changes are merged.
 
 ## Reporting Issues
 
diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
index e0e6804bf..8fc6bd0ad 100644
--- a/.github/FUNDING.yml
+++ b/.github/FUNDING.yml
@@ -1 +1 @@
-tidelift: "pypi/Pillow"
+tidelift: "pypi/pillow"
diff --git a/.github/ISSUE_TEMPLATE/ISSUE_REPORT.md b/.github/ISSUE_TEMPLATE/ISSUE_REPORT.md
index 115f6135d..ea4c0e92b 100644
--- a/.github/ISSUE_TEMPLATE/ISSUE_REPORT.md
+++ b/.github/ISSUE_TEMPLATE/ISSUE_REPORT.md
@@ -48,6 +48,21 @@ Thank you.
 * Python: 
 * Pillow: 
 
+```text
+Please paste here the output of running:
+
+python3 -m PIL.report
+or
+python3 -m PIL --report
+
+Or the output of the following Python code:
+
+from PIL import report
+# or
+from PIL import features
+features.pilinfo(supported_formats=False)
+```
+
 <!--
 Please include **code** that reproduces the issue and whenever possible, an **image** that demonstrates the issue. Please upload images to GitHub, not to third-party file hosting sites. If necessary, add the image to a zip or tar archive.
 
diff --git a/.github/problem-matchers/gcc.json b/.github/problem-matchers/gcc.json
new file mode 100644
index 000000000..8e2866afe
--- /dev/null
+++ b/.github/problem-matchers/gcc.json
@@ -0,0 +1,18 @@
+{
+    "__comment": "Based on vscode-cpptools' Extension/package.json gcc rule",
+    "problemMatcher": [
+        {
+            "owner": "gcc-problem-matcher",
+            "pattern": [
+                {
+                    "regexp": "^\\s*(.*):(\\d+):(\\d+):\\s+(?:fatal\\s+)?(warning|error):\\s+(.*)$",
+                    "file": 1,
+                    "line": 2,
+                    "column": 3,
+                    "severity": 4,
+                    "message": 5
+                }
+            ]
+        }
+    ]
+}
diff --git a/.github/release-drafter.yml b/.github/release-drafter.yml
index 4d855469a..de0ab4805 100644
--- a/.github/release-drafter.yml
+++ b/.github/release-drafter.yml
@@ -3,16 +3,19 @@ tag-template: "$NEXT_MINOR_VERSION"
 change-template: '- $TITLE #$NUMBER [@$AUTHOR]'
 
 categories:
-  - title: "Dependencies"
-    label: "Dependency"
+  - title: "Removals"
+    label: "Removal"
   - title: "Deprecations"
     label: "Deprecation"
   - title: "Documentation"
     label: "Documentation"
-  - title: "Removals"
-    label: "Removal"
+  - title: "Dependencies"
+    label: "Dependency"
   - title: "Testing"
     label: "Testing"
+  - title: "Type hints"
+    label: "Type hints"
+  - title: "Other changes"
 
 exclude-labels:
   - "changelog: skip"
@@ -21,6 +24,4 @@ template: |
 
   https://pillow.readthedocs.io/en/stable/releasenotes/$NEXT_MINOR_VERSION.html
 
-  ## Changes
-
   $CHANGES
diff --git a/.github/renovate.json b/.github/renovate.json
index d1d824335..f48b670ec 100644
--- a/.github/renovate.json
+++ b/.github/renovate.json
@@ -1,7 +1,7 @@
 {
     "$schema": "https://docs.renovatebot.com/renovate-schema.json",
     "extends": [
-        "config:base"
+        "config:recommended"
     ],
     "labels": [
         "Dependency"
@@ -9,9 +9,13 @@
     "packageRules": [
         {
             "groupName": "github-actions",
-            "matchManagers": ["github-actions"],
-            "separateMajorMinor": "false"
+            "matchManagers": [
+                "github-actions"
+            ],
+            "separateMajorMinor": false
         }
     ],
-    "schedule": ["on the 3rd day of the month"]
+    "schedule": [
+        "on the 3rd day of the month"
+    ]
 }
diff --git a/.github/workflows/cifuzz.yml b/.github/workflows/cifuzz.yml
index 560d6c7df..0456bbaba 100644
--- a/.github/workflows/cifuzz.yml
+++ b/.github/workflows/cifuzz.yml
@@ -2,13 +2,17 @@ name: CIFuzz
 
 on:
   push:
+    branches:
+      - "**"
     paths:
       - ".github/workflows/cifuzz.yml"
+      - ".github/workflows/wheels-dependencies.sh"
       - "**.c"
       - "**.h"
   pull_request:
     paths:
       - ".github/workflows/cifuzz.yml"
+      - ".github/workflows/wheels-dependencies.sh"
       - "**.c"
       - "**.h"
   workflow_dispatch:
@@ -40,13 +44,13 @@ jobs:
         language: python
         dry-run: false
     - name: Upload New Crash
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       if: failure() && steps.build.outcome == 'success'
       with:
         name: artifacts
         path: ./out/artifacts
     - name: Upload Legacy Crash
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       if: steps.run.outcome == 'success'
       with:
         name: crash
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 81ba8ef15..626824f38 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -2,13 +2,17 @@ name: Docs
 
 on:
   push:
+    branches:
+      - "**"
     paths:
       - ".github/workflows/docs.yml"
       - "docs/**"
+      - "src/PIL/**"
   pull_request:
     paths:
       - ".github/workflows/docs.yml"
       - "docs/**"
+      - "src/PIL/**"
   workflow_dispatch:
 
 permissions:
@@ -28,23 +32,35 @@ jobs:
     name: Docs
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: Set up Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: "3.x"
         cache: pip
-        cache-dependency-path: ".ci/*.sh"
+        cache-dependency-path: |
+          ".ci/*.sh"
+          "pyproject.toml"
 
     - name: Build system information
       run: python3 .github/workflows/system-info.py
 
+    - name: Cache libimagequant
+      uses: actions/cache@v4
+      id: cache-libimagequant
+      with:
+        path: ~/cache-libimagequant
+        key: ${{ runner.os }}-libimagequant-${{ hashFiles('depends/install_imagequant.sh') }}
+
     - name: Install Linux dependencies
       run: |
         .ci/install.sh
       env:
         GHA_PYTHON_VERSION: "3.x"
+        GHA_LIBIMAGEQUANT_CACHE_HIT: ${{ steps.cache-libimagequant.outputs.cache-hit }}
 
     - name: Build
       run: |
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 49611e287..8e789a734 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -2,6 +2,9 @@ name: Lint
 
 on: [push, pull_request, workflow_dispatch]
 
+env:
+  FORCE_COLOR: 1
+
 permissions:
   contents: read
 
@@ -17,10 +20,12 @@ jobs:
     name: Lint
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: pre-commit cache
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.cache/pre-commit
         key: lint-pre-commit-${{ hashFiles('**/.pre-commit-config.yaml') }}
@@ -28,7 +33,7 @@ jobs:
           lint-pre-commit-
 
     - name: Set up Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: "3.x"
         cache: pip
@@ -46,3 +51,6 @@ jobs:
       run: tox -e lint
       env:
         PRE_COMMIT_COLOR: always
+
+    - name: Mypy
+      run: tox -e mypy
diff --git a/.github/workflows/macos-install.sh b/.github/workflows/macos-install.sh
index 1fc6262f4..ddb421230 100755
--- a/.github/workflows/macos-install.sh
+++ b/.github/workflows/macos-install.sh
@@ -2,19 +2,34 @@
 
 set -e
 
-brew install libtiff libjpeg openjpeg libimagequant webp little-cms2 freetype libraqm
+if [[ "$ImageOS" == "macos13" ]]; then
+    brew uninstall gradle maven
+fi
+brew install \
+    freetype \
+    ghostscript \
+    libimagequant \
+    libjpeg \
+    libtiff \
+    little-cms2 \
+    openjpeg \
+    webp
+if [[ "$ImageOS" == "macos13" ]]; then
+    brew install --ignore-dependencies libraqm
+else
+    brew install libraqm
+fi
+export PKG_CONFIG_PATH="/usr/local/opt/openblas/lib/pkgconfig"
 
-PYTHONOPTIMIZE=0 python3 -m pip install cffi
 python3 -m pip install coverage
 python3 -m pip install defusedxml
+python3 -m pip install ipython
 python3 -m pip install olefile
 python3 -m pip install -U pytest
 python3 -m pip install -U pytest-cov
 python3 -m pip install -U pytest-timeout
 python3 -m pip install pyroma
-
-# TODO Remove condition when NumPy supports 3.12
-if ! [ "$GHA_PYTHON_VERSION" == "3.12-dev" ]; then python3 -m pip install numpy ; fi
+python3 -m pip install numpy
 
 # extra test images
 pushd depends && ./install_extra_test_images.sh && popd
diff --git a/.github/workflows/release-drafter.yml b/.github/workflows/release-drafter.yml
index 9e2fdc096..a8ddef22c 100644
--- a/.github/workflows/release-drafter.yml
+++ b/.github/workflows/release-drafter.yml
@@ -10,7 +10,7 @@ on:
 permissions:
   contents: read
 
-concurrency: 
+concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
@@ -23,6 +23,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       # Drafts your next release notes as pull requests are merged into "main"
-      - uses: release-drafter/release-drafter@v5
+      - uses: release-drafter/release-drafter@v6
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
index 24b8f85d1..61ccf58e2 100644
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/stale.yml
@@ -6,21 +6,23 @@ on:
   workflow_dispatch:
 
 permissions:
-  issues: write
+  contents: read
 
-concurrency: 
+concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
 jobs:
   stale:
     if: github.repository_owner == 'python-pillow'
+    permissions:
+      issues: write
 
     runs-on: ubuntu-latest
 
     steps:
     - name: "Check issues"
-      uses: actions/stale@v8
+      uses: actions/stale@v9
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         only-labels: "Awaiting OP Action"
diff --git a/.github/workflows/system-info.py b/.github/workflows/system-info.py
index 8e840319a..9e97b8971 100644
--- a/.github/workflows/system-info.py
+++ b/.github/workflows/system-info.py
@@ -6,6 +6,9 @@ This sort of info is missing from GitHub Actions.
 Requested here:
 https://github.com/actions/virtual-environments/issues/79
 """
+
+from __future__ import annotations
+
 import os
 import platform
 import sys
diff --git a/.github/workflows/test-cygwin.yml b/.github/workflows/test-cygwin.yml
index e7ab6466e..5b0a03946 100644
--- a/.github/workflows/test-cygwin.yml
+++ b/.github/workflows/test-cygwin.yml
@@ -2,13 +2,21 @@ name: Test Cygwin
 
 on:
   push:
+    branches:
+      - "**"
     paths-ignore:
       - ".github/workflows/docs.yml"
+      - ".github/workflows/wheels*"
+      - ".gitmodules"
       - "docs/**"
+      - "wheels/**"
   pull_request:
     paths-ignore:
       - ".github/workflows/docs.yml"
+      - ".github/workflows/wheels*"
+      - ".gitmodules"
       - "docs/**"
+      - "wheels/**"
   workflow_dispatch:
 
 permissions:
@@ -18,13 +26,16 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  COVERAGE_CORE: sysmon
+
 jobs:
   build:
     runs-on: windows-latest
     strategy:
       fail-fast: false
       matrix:
-        python-minor-version: [8, 9]
+        python-minor-version: [9]
 
     timeout-minutes: 40
 
@@ -36,15 +47,17 @@ jobs:
           git config --global core.autocrlf input
 
       - name: Checkout Pillow
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - name: Install Cygwin
         uses: cygwin/cygwin-install-action@v4
         with:
-          platform: x86_64
           packages: >
             gcc-g++
             ghostscript
+            git
             ImageMagick
             jpeg
             libfreetype-devel
@@ -61,9 +74,9 @@ jobs:
             make
             netpbm
             perl
-            python3${{ matrix.python-minor-version }}-cffi
             python3${{ matrix.python-minor-version }}-cython
             python3${{ matrix.python-minor-version }}-devel
+            python3${{ matrix.python-minor-version }}-ipython
             python3${{ matrix.python-minor-version }}-numpy
             python3${{ matrix.python-minor-version }}-sip
             python3${{ matrix.python-minor-version }}-tkinter
@@ -72,22 +85,22 @@ jobs:
             zlib-devel
 
       - name: Add Lapack to PATH
-        uses: egor-tensin/cleanup-path@v3
+        uses: egor-tensin/cleanup-path@v4
         with:
           dirs: 'C:\cygwin\bin;C:\cygwin\lib\lapack'
 
+      - name: Select Python version
+        run: |
+          ln -sf c:/cygwin/bin/python3.${{ matrix.python-minor-version }} c:/cygwin/bin/python3
+
       - name: pip cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: 'C:\cygwin\home\runneradmin\.cache\pip'
           key: ${{ runner.os }}-cygwin-pip3.${{ matrix.python-minor-version }}-${{ hashFiles('.ci/install.sh') }}
           restore-keys: |
             ${{ runner.os }}-cygwin-pip3.${{ matrix.python-minor-version }}-
 
-      - name: Select Python version
-        run: |
-          ln -sf c:/cygwin/bin/python3.${{ matrix.python-minor-version }} c:/cygwin/bin/python3
-
       - name: Build system information
         run: |
           dash.exe -c "python3 .github/workflows/system-info.py"
@@ -96,11 +109,6 @@ jobs:
         run: |
           bash.exe .ci/install.sh
 
-      - name: Install a different NumPy
-        shell: dash.exe -l "{0}"
-        run: |
-          python3 -m pip install -U numpy
-
       - name: Build
         shell: bash.exe -eo pipefail -o igncr "{0}"
         run: |
@@ -116,7 +124,7 @@ jobs:
           dash.exe -c "mkdir -p Tests/errors"
 
       - name: Upload errors
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: errors
@@ -125,13 +133,15 @@ jobs:
       - name: After success
         run: |
           bash.exe .ci/after_success.sh
+          rm C:\cygwin\bin\bash.EXE
 
       - name: Upload coverage
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v5
         with:
-          file: ./coverage.xml
+          files: ./coverage.xml
           flags: GHA_Cygwin
           name: Cygwin Python 3.${{ matrix.python-minor-version }}
+          token: ${{ secrets.CODECOV_ORG_TOKEN }}
 
   success:
     permissions:
diff --git a/.github/workflows/test-docker.yml b/.github/workflows/test-docker.yml
index f22733dc4..cc5f9d4a5 100644
--- a/.github/workflows/test-docker.yml
+++ b/.github/workflows/test-docker.yml
@@ -2,13 +2,21 @@ name: Test Docker
 
 on:
   push:
+    branches:
+      - "**"
     paths-ignore:
       - ".github/workflows/docs.yml"
+      - ".github/workflows/wheels*"
+      - ".gitmodules"
       - "docs/**"
+      - "wheels/**"
   pull_request:
     paths-ignore:
       - ".github/workflows/docs.yml"
+      - ".github/workflows/wheels*"
+      - ".gitmodules"
       - "docs/**"
+      - "wheels/**"
   workflow_dispatch:
 
 permissions:
@@ -28,37 +36,37 @@ jobs:
         docker: [
           # Run slower jobs first to give them a headstart and reduce waiting time
           ubuntu-22.04-jammy-arm64v8,
-          ubuntu-22.04-jammy-ppc64le,
-          ubuntu-22.04-jammy-s390x,
+          ubuntu-24.04-noble-ppc64le,
+          ubuntu-24.04-noble-s390x,
           # Then run the remainder
           alpine,
           amazon-2-amd64,
           amazon-2023-amd64,
           arch,
-          centos-7-amd64,
-          centos-stream-8-amd64,
           centos-stream-9-amd64,
-          debian-11-bullseye-amd64,
+          debian-12-bookworm-x86,
           debian-12-bookworm-amd64,
-          fedora-37-amd64,
-          fedora-38-amd64,
+          fedora-40-amd64,
+          fedora-41-amd64,
           gentoo,
-          ubuntu-20.04-focal-amd64,
           ubuntu-22.04-jammy-amd64,
+          ubuntu-24.04-noble-amd64,
         ]
         dockerTag: [main]
         include:
           - docker: "ubuntu-22.04-jammy-arm64v8"
             qemu-arch: "aarch64"
-          - docker: "ubuntu-22.04-jammy-ppc64le"
+          - docker: "ubuntu-24.04-noble-ppc64le"
             qemu-arch: "ppc64le"
-          - docker: "ubuntu-22.04-jammy-s390x"
+          - docker: "ubuntu-24.04-noble-s390x"
             qemu-arch: "s390x"
 
     name: ${{ matrix.docker }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: Build system information
       run: python3 .github/workflows/system-info.py
@@ -74,8 +82,8 @@ jobs:
 
     - name: Docker build
       run: |
-        # The Pillow user in the docker container is UID 1000
-        sudo chown -R 1000 $GITHUB_WORKSPACE
+        # The Pillow user in the docker container is UID 1001
+        sudo chown -R 1001 $GITHUB_WORKSPACE
         docker run --name pillow_container  -v $GITHUB_WORKSPACE:/Pillow pythonpillow/${{ matrix.docker }}:${{ matrix.dockerTag }}
         sudo chown -R runner $GITHUB_WORKSPACE
 
@@ -92,11 +100,11 @@ jobs:
         MATRIX_DOCKER: ${{ matrix.docker }}
 
     - name: Upload coverage
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v5
       with:
         flags: GHA_Docker
         name: ${{ matrix.docker }}
-        gcov: true
+        token: ${{ secrets.CODECOV_ORG_TOKEN }}
 
   success:
     permissions:
diff --git a/.github/workflows/test-msys2.yml b/.github/workflows/test-msys2.yml
index f822f36c6..f4678e5f6 100644
--- a/.github/workflows/test-msys2.yml
+++ b/.github/workflows/test-msys2.yml
@@ -2,13 +2,21 @@ name: Test MSYS2
 
 on:
   push:
+    branches:
+      - "**"
     paths-ignore:
       - ".github/workflows/docs.yml"
+      - ".github/workflows/wheels*"
+      - ".gitmodules"
       - "docs/**"
+      - "wheels/**"
   pull_request:
     paths-ignore:
       - ".github/workflows/docs.yml"
+      - ".github/workflows/wheels*"
+      - ".gitmodules"
       - "docs/**"
+      - "wheels/**"
   workflow_dispatch:
 
 permissions:
@@ -18,6 +26,9 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  COVERAGE_CORE: sysmon
+
 jobs:
   build:
     runs-on: windows-latest
@@ -42,7 +53,9 @@ jobs:
 
     steps:
       - name: Checkout Pillow
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - name: Set up shell
         run: echo "C:\msys64\usr\bin\" >> $env:GITHUB_PATH
@@ -66,11 +79,9 @@ jobs:
               libtiff:p \
               libwebp:p \
               openjpeg2:p \
-              python3-cffi:p \
               python3-numpy:p \
               python3-olefile:p \
               python3-pip:p \
-              python3-setuptools:p \
               python-pyqt6:p
 
           python3 -m pip install pyroma pytest pytest-cov pytest-timeout
@@ -78,7 +89,7 @@ jobs:
           pushd depends && ./install_extra_test_images.sh && popd
 
       - name: Build Pillow
-        run: SETUPTOOLS_USE_DISTUTILS="stdlib" .ci/build.sh
+        run: .ci/build.sh
 
       - name: Test Pillow
         run: .ci/test.sh
@@ -87,9 +98,9 @@ jobs:
         run: .ci/after_success.sh
 
       - name: Upload coverage
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v5
         with:
-          file: ./coverage.xml
+          files: ./coverage.xml
           flags: GHA_Windows
           name: MSYS2 ${{ matrix.msystem }}
 
diff --git a/.github/workflows/test-valgrind.yml b/.github/workflows/test-valgrind.yml
index 6fab0ecd2..8818b3b23 100644
--- a/.github/workflows/test-valgrind.yml
+++ b/.github/workflows/test-valgrind.yml
@@ -1,9 +1,11 @@
 name: Test Valgrind
 
-# like the docker tests, but running valgrind only on *.c/*.h changes.
+# like the Docker tests, but running valgrind only on *.c/*.h changes.
 
 on:
   push:
+    branches:
+      - "**"
     paths:
       - ".github/workflows/test-valgrind.yml"
       - "**.c"
@@ -37,7 +39,9 @@ jobs:
     name: ${{ matrix.docker }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: Build system information
       run: python3 .github/workflows/system-info.py
@@ -48,7 +52,7 @@ jobs:
 
     - name: Build and Run Valgrind
       run: |
-        # The Pillow user in the docker container is UID 1000
-        sudo chown -R 1000 $GITHUB_WORKSPACE
+        # The Pillow user in the docker container is UID 1001
+        sudo chown -R 1001 $GITHUB_WORKSPACE
         docker run --name pillow_container -e "PILLOW_VALGRIND_TEST=true" -v $GITHUB_WORKSPACE:/Pillow pythonpillow/${{ matrix.docker }}:${{ matrix.dockerTag }}
         sudo chown -R runner $GITHUB_WORKSPACE
diff --git a/.github/workflows/test-windows.yml b/.github/workflows/test-windows.yml
index 3a24fd36a..d905a3925 100644
--- a/.github/workflows/test-windows.yml
+++ b/.github/workflows/test-windows.yml
@@ -2,13 +2,21 @@ name: Test Windows
 
 on:
   push:
+    branches:
+      - "**"
     paths-ignore:
       - ".github/workflows/docs.yml"
+      - ".github/workflows/wheels*"
+      - ".gitmodules"
       - "docs/**"
+      - "wheels/**"
   pull_request:
     paths-ignore:
       - ".github/workflows/docs.yml"
+      - ".github/workflows/wheels*"
+      - ".gitmodules"
       - "docs/**"
+      - "wheels/**"
   workflow_dispatch:
 
 permissions:
@@ -18,13 +26,16 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  COVERAGE_CORE: sysmon
+
 jobs:
   build:
     runs-on: windows-latest
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["pypy3.10", "pypy3.9", "3.8", "3.9", "3.10", "3.11", "3.12-dev"]
+        python-version: ["pypy3.10", "3.9", "3.10", "3.11", "3.12", "3.13"]
 
     timeout-minutes: 30
 
@@ -32,42 +43,53 @@ jobs:
 
     steps:
     - name: Checkout Pillow
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: Checkout cached dependencies
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
+        persist-credentials: false
         repository: python-pillow/pillow-depends
         path: winbuild\depends
 
     - name: Checkout extra test images
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
+        persist-credentials: false
         repository: python-pillow/test-images
         path: Tests\test-images
 
     # sets env: pythonLocation
     - name: Set up Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
+        allow-prereleases: true
         cache: pip
         cache-dependency-path: ".github/workflows/test-windows.yml"
 
     - name: Print build system information
       run: python3 .github/workflows/system-info.py
 
-    - name: python3 -m pip install setuptools wheel pytest pytest-cov pytest-timeout defusedxml
-      run: python3 -m pip install setuptools wheel pytest pytest-cov pytest-timeout defusedxml
+    - name: Upgrade pip
+      run: |
+        python3 -m pip install --upgrade pip
+
+    - name: Install CPython dependencies
+      if: "!contains(matrix.python-version, 'pypy')"
+      run: |
+        python3 -m pip install PyQt6
 
     - name: Install dependencies
       id: install
       run: |
-        7z x winbuild\depends\nasm-2.16.01-win64.zip "-o$env:RUNNER_WORKSPACE\"
-        echo "$env:RUNNER_WORKSPACE\nasm-2.16.01" >> $env:GITHUB_PATH
+        choco install nasm --no-progress
+        echo "C:\Program Files\NASM" >> $env:GITHUB_PATH
 
-        choco install ghostscript --version=10.0.0.20230317
-        echo "C:\Program Files\gs\gs10.00.0\bin" >> $env:GITHUB_PATH
+        choco install ghostscript --version=10.4.0 --no-progress
+        echo "C:\Program Files\gs\gs10.04.0\bin" >> $env:GITHUB_PATH
 
         # Install extra test images
         xcopy /S /Y Tests\test-images\* Tests\images
@@ -80,7 +102,7 @@ jobs:
 
     - name: Cache build
       id: build-cache
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: winbuild\build
         key:
@@ -89,7 +111,7 @@ jobs:
     - name: Prepare build
       if: steps.build-cache.outputs.cache-hit != 'true'
       run: |
-        & python.exe winbuild\build_prepare.py -v --python $env:pythonLocation
+        & python.exe winbuild\build_prepare.py -v
       shell: pwsh
 
     - name: Build dependencies / libjpeg-turbo
@@ -157,9 +179,8 @@ jobs:
 
     - name: Build Pillow
       run: |
-        $FLAGS=""
-        if ('${{ github.event_name }}' -ne 'pull_request') { $FLAGS="--disable-imagequant" }
-        & winbuild\build\build_pillow.cmd $FLAGS install
+        $FLAGS="-C raqm=vendor -C fribidi=vendor"
+        cmd /c "winbuild\build\build_env.cmd && $env:pythonLocation\python.exe -m pip install -v $FLAGS .[tests]"
         & $env:pythonLocation\python.exe selftest.py --installed
       shell: pwsh
 
@@ -171,8 +192,8 @@ jobs:
 
     - name: Test Pillow
       run: |
-        path %GITHUB_WORKSPACE%\\winbuild\\build\\bin;%PATH%
-        python.exe -m pytest -vx -W always --cov PIL --cov Tests --cov-report term --cov-report xml Tests
+        path %GITHUB_WORKSPACE%\winbuild\build\bin;%PATH%
+        .ci\test.cmd
       shell: cmd
 
     - name: Prepare to upload errors
@@ -182,7 +203,7 @@ jobs:
       shell: bash
 
     - name: Upload errors
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       if: failure()
       with:
         name: errors
@@ -194,51 +215,12 @@ jobs:
       shell: pwsh
 
     - name: Upload coverage
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v5
       with:
-        file: ./coverage.xml
+        files: ./coverage.xml
         flags: GHA_Windows
         name: ${{ runner.os }} Python ${{ matrix.python-version }}
-
-    - name: Build wheel
-      id: wheel
-      if: "github.event_name != 'pull_request'"
-      run: |
-        mkdir fribidi
-        copy winbuild\build\bin\fribidi* fribidi
-        setlocal EnableDelayedExpansion
-        for %%f in (winbuild\build\license\*) do (
-          set x=%%~nf
-          rem Skip FriBiDi license, it is not included in the wheel.
-          set fribidi=!x:~0,7!
-          if NOT !fribidi!==fribidi (
-            rem Skip imagequant license, it is not included in the wheel.
-            set libimagequant=!x:~0,13!
-            if NOT !libimagequant!==libimagequant (
-              echo. >> LICENSE
-              echo ===== %%~nf ===== >> LICENSE
-              echo. >> LICENSE
-              type %%f >> LICENSE
-            )
-          )
-        )
-        for /f "tokens=3 delims=/" %%a in ("${{ github.ref }}") do echo dist=dist-%%a >> %GITHUB_OUTPUT%
-        winbuild\\build\\build_pillow.cmd --disable-imagequant bdist_wheel
-      shell: cmd
-
-    - name: Upload wheel
-      uses: actions/upload-artifact@v3
-      if: "github.event_name != 'pull_request'"
-      with:
-        name: ${{ steps.wheel.outputs.dist }}
-        path: dist\*.whl
-
-    - name: Upload fribidi.dll
-      if: "github.event_name != 'pull_request' && matrix.python-version == 3.11"
-      uses: actions/upload-artifact@v3
-      with:
-        name: fribidi
-        path: fribidi\*
+        token: ${{ secrets.CODECOV_ORG_TOKEN }}
 
   success:
     permissions:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 893c0d12c..83a696f5f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -2,13 +2,21 @@ name: Test
 
 on:
   push:
+    branches:
+      - "**"
     paths-ignore:
       - ".github/workflows/docs.yml"
+      - ".github/workflows/wheels*"
+      - ".gitmodules"
       - "docs/**"
+      - "wheels/**"
   pull_request:
     paths-ignore:
       - ".github/workflows/docs.yml"
+      - ".github/workflows/wheels*"
+      - ".gitmodules"
       - "docs/**"
+      - "wheels/**"
   workflow_dispatch:
 
 permissions:
@@ -18,6 +26,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  COVERAGE_CORE: sysmon
+  FORCE_COLOR: 1
+
 jobs:
   build:
 
@@ -30,42 +42,64 @@ jobs:
         ]
         python-version: [
           "pypy3.10",
-          "pypy3.9",
-          "3.12-dev",
+          "3.13t",
+          "3.13",
+          "3.12",
           "3.11",
           "3.10",
           "3.9",
-          "3.8",
         ]
         include:
-        - python-version: "3.9"
-          PYTHONOPTIMIZE: 1
-          REVERSE: "--reverse"
-        - python-version: "3.8"
-          PYTHONOPTIMIZE: 2
+        - { python-version: "3.11", PYTHONOPTIMIZE: 1, REVERSE: "--reverse" }
+        - { python-version: "3.10", PYTHONOPTIMIZE: 2 }
+        # Free-threaded
+        - { python-version: "3.13t", disable-gil: true }
+        # M1 only available for 3.10+
+        - { os: "macos-13", python-version: "3.9" }
+        exclude:
+        - { os: "macos-latest", python-version: "3.9" }
 
     runs-on: ${{ matrix.os }}
     name: ${{ matrix.os }} Python ${{ matrix.python-version }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
+      uses: Quansight-Labs/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
+        allow-prereleases: true
         cache: pip
-        cache-dependency-path: ".ci/*.sh"
+        cache-dependency-path: |
+          ".ci/*.sh"
+          "pyproject.toml"
+
+    - name: Set PYTHON_GIL
+      if: "${{ matrix.disable-gil }}"
+      run: |
+        echo "PYTHON_GIL=0" >> $GITHUB_ENV
 
     - name: Build system information
       run: python3 .github/workflows/system-info.py
 
+    - name: Cache libimagequant
+      if: startsWith(matrix.os, 'ubuntu')
+      uses: actions/cache@v4
+      id: cache-libimagequant
+      with:
+        path: ~/cache-libimagequant
+        key: ${{ runner.os }}-libimagequant-${{ hashFiles('depends/install_imagequant.sh') }}
+
     - name: Install Linux dependencies
       if: startsWith(matrix.os, 'ubuntu')
       run: |
         .ci/install.sh
       env:
         GHA_PYTHON_VERSION: ${{ matrix.python-version }}
+        GHA_LIBIMAGEQUANT_CACHE_HIT: ${{ steps.cache-libimagequant.outputs.cache-hit }}
 
     - name: Install macOS dependencies
       if: startsWith(matrix.os, 'macOS')
@@ -74,6 +108,10 @@ jobs:
       env:
         GHA_PYTHON_VERSION: ${{ matrix.python-version }}
 
+    - name: Register gcc problem matcher
+      if: "matrix.os == 'ubuntu-latest' && matrix.python-version == '3.13'"
+      run: echo "::add-matcher::.github/problem-matchers/gcc.json"
+
     - name: Build
       run: |
         .ci/build.sh
@@ -100,7 +138,7 @@ jobs:
         mkdir -p Tests/errors
 
     - name: Upload errors
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       if: failure()
       with:
         name: errors
@@ -111,11 +149,11 @@ jobs:
         .ci/after_success.sh
 
     - name: Upload coverage
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v5
       with:
-        flags: ${{ matrix.os == 'macos-latest' && 'GHA_macOS' || 'GHA_Ubuntu' }}
+        flags: ${{ matrix.os == 'ubuntu-latest' && 'GHA_Ubuntu' || 'GHA_macOS' }}
         name: ${{ matrix.os }} Python ${{ matrix.python-version }}
-        gcov: true
+        token: ${{ secrets.CODECOV_ORG_TOKEN }}
 
   success:
     permissions:
diff --git a/.github/workflows/wheels-dependencies.sh b/.github/workflows/wheels-dependencies.sh
new file mode 100755
index 000000000..ddda43423
--- /dev/null
+++ b/.github/workflows/wheels-dependencies.sh
@@ -0,0 +1,197 @@
+#!/bin/bash
+
+# Setup that needs to be done before multibuild utils are invoked
+PROJECTDIR=$(pwd)
+if [[ "$(uname -s)" == "Darwin" ]]; then
+    # Safety check - macOS builds require that CIBW_ARCHS is set, and that it
+    # only contains a single value (even though cibuildwheel allows multiple
+    # values in CIBW_ARCHS).
+    if [[ -z "$CIBW_ARCHS" ]]; then
+        echo "ERROR: Pillow macOS builds require CIBW_ARCHS be defined."
+        exit 1
+    fi
+    if [[ "$CIBW_ARCHS" == *" "* ]]; then
+        echo "ERROR: Pillow macOS builds only support a single architecture in CIBW_ARCHS."
+        exit 1
+    fi
+
+    # Build macOS dependencies in `build/darwin`
+    # Install them into `build/deps/darwin`
+    WORKDIR=$(pwd)/build/darwin
+    BUILD_PREFIX=$(pwd)/build/deps/darwin
+else
+    # Build prefix will default to /usr/local
+    WORKDIR=$(pwd)/build
+    MB_ML_LIBC=${AUDITWHEEL_POLICY::9}
+    MB_ML_VER=${AUDITWHEEL_POLICY:9}
+fi
+PLAT=$CIBW_ARCHS
+
+# Define custom utilities
+source wheels/multibuild/common_utils.sh
+source wheels/multibuild/library_builders.sh
+if [ -z "$IS_MACOS" ]; then
+    source wheels/multibuild/manylinux_utils.sh
+fi
+
+ARCHIVE_SDIR=pillow-depends-main
+
+# Package versions for fresh source builds
+FREETYPE_VERSION=2.13.2
+HARFBUZZ_VERSION=10.0.1
+LIBPNG_VERSION=1.6.44
+JPEGTURBO_VERSION=3.0.4
+OPENJPEG_VERSION=2.5.2
+XZ_VERSION=5.6.3
+TIFF_VERSION=4.6.0
+LCMS2_VERSION=2.16
+if [[ -n "$IS_MACOS" ]]; then
+    GIFLIB_VERSION=5.2.2
+else
+    GIFLIB_VERSION=5.2.1
+fi
+if [[ -n "$IS_MACOS" ]] || [[ "$MB_ML_VER" != 2014 ]]; then
+    ZLIB_VERSION=1.3.1
+else
+    ZLIB_VERSION=1.2.8
+fi
+LIBWEBP_VERSION=1.4.0
+BZIP2_VERSION=1.0.8
+LIBXCB_VERSION=1.17.0
+BROTLI_VERSION=1.1.0
+
+function build_pkg_config {
+    if [ -e pkg-config-stamp ]; then return; fi
+    # This essentially duplicates the Homebrew recipe
+    ORIGINAL_CFLAGS=$CFLAGS
+    CFLAGS="$CFLAGS -Wno-int-conversion"
+    build_simple pkg-config 0.29.2 https://pkg-config.freedesktop.org/releases tar.gz \
+        --disable-debug --disable-host-tool --with-internal-glib \
+        --with-pc-path=$BUILD_PREFIX/share/pkgconfig:$BUILD_PREFIX/lib/pkgconfig \
+        --with-system-include-path=$(xcrun --show-sdk-path --sdk macosx)/usr/include
+    CFLAGS=$ORIGINAL_CFLAGS
+    export PKG_CONFIG=$BUILD_PREFIX/bin/pkg-config
+    touch pkg-config-stamp
+}
+
+function build_brotli {
+    if [ -e brotli-stamp ]; then return; fi
+    local out_dir=$(fetch_unpack https://github.com/google/brotli/archive/v$BROTLI_VERSION.tar.gz brotli-$BROTLI_VERSION.tar.gz)
+    (cd $out_dir \
+        && cmake -DCMAKE_INSTALL_PREFIX=$BUILD_PREFIX -DCMAKE_INSTALL_LIBDIR=$BUILD_PREFIX/lib -DCMAKE_INSTALL_NAME_DIR=$BUILD_PREFIX/lib . \
+        && make install)
+    touch brotli-stamp
+}
+
+function build_harfbuzz {
+    if [ -e harfbuzz-stamp ]; then return; fi
+    python3 -m pip install meson ninja
+
+    local out_dir=$(fetch_unpack https://github.com/harfbuzz/harfbuzz/releases/download/$HARFBUZZ_VERSION/$HARFBUZZ_VERSION.tar.xz harfbuzz-$HARFBUZZ_VERSION.tar.xz)
+    (cd $out_dir \
+        && meson setup build --prefix=$BUILD_PREFIX --libdir=$BUILD_PREFIX/lib --buildtype=release -Dfreetype=enabled -Dglib=disabled)
+    (cd $out_dir/build \
+        && meson install)
+    touch harfbuzz-stamp
+}
+
+function build {
+    build_xz
+    if [ -z "$IS_ALPINE" ] && [ -z "$IS_MACOS" ]; then
+        yum remove -y zlib-devel
+    fi
+    build_new_zlib
+
+    build_simple xcb-proto 1.17.0 https://xorg.freedesktop.org/archive/individual/proto
+    if [ -n "$IS_MACOS" ]; then
+        build_simple xorgproto 2024.1 https://www.x.org/pub/individual/proto
+        build_simple libXau 1.0.11 https://www.x.org/pub/individual/lib
+        build_simple libpthread-stubs 0.5 https://xcb.freedesktop.org/dist
+    else
+        sed s/\${pc_sysrootdir\}// $BUILD_PREFIX/share/pkgconfig/xcb-proto.pc > $BUILD_PREFIX/lib/pkgconfig/xcb-proto.pc
+    fi
+    build_simple libxcb $LIBXCB_VERSION https://www.x.org/releases/individual/lib
+
+    build_libjpeg_turbo
+    if [ -n "$IS_MACOS" ]; then
+        # Custom tiff build to include jpeg; by default, configure won't include
+        # headers/libs in the custom macOS prefix. Explicitly disable webp,
+        # libdeflate and zstd, because on x86_64 macs, it will pick up the
+        # Homebrew versions of those libraries from /usr/local.
+        build_simple tiff $TIFF_VERSION https://download.osgeo.org/libtiff tar.gz \
+            --with-jpeg-include-dir=$BUILD_PREFIX/include --with-jpeg-lib-dir=$BUILD_PREFIX/lib \
+            --disable-webp --disable-libdeflate --disable-zstd
+    else
+        build_tiff
+    fi
+
+    build_libpng
+    build_lcms2
+    build_openjpeg
+
+    ORIGINAL_CFLAGS=$CFLAGS
+    CFLAGS="$CFLAGS -O3 -DNDEBUG"
+    if [[ -n "$IS_MACOS" ]]; then
+        CFLAGS="$CFLAGS -Wl,-headerpad_max_install_names"
+    fi
+    build_libwebp
+    CFLAGS=$ORIGINAL_CFLAGS
+
+    build_brotli
+
+    if [ -n "$IS_MACOS" ]; then
+        # Custom freetype build
+        build_simple freetype $FREETYPE_VERSION https://download.savannah.gnu.org/releases/freetype tar.gz --with-harfbuzz=no
+    else
+        build_freetype
+    fi
+
+    build_harfbuzz
+}
+
+# Perform all dependency builds in the build subfolder.
+mkdir -p $WORKDIR
+pushd $WORKDIR > /dev/null
+
+# Any stuff that you need to do before you start building the wheels
+# Runs in the root directory of this repository.
+if [[ ! -d $WORKDIR/pillow-depends-main ]]; then
+  if [[ ! -f $PROJECTDIR/pillow-depends-main.zip ]]; then
+    echo "Download pillow dependency sources..."
+    curl -fSL -o $PROJECTDIR/pillow-depends-main.zip https://github.com/python-pillow/pillow-depends/archive/main.zip
+  fi
+  echo "Unpacking pillow dependency sources..."
+  untar $PROJECTDIR/pillow-depends-main.zip
+fi
+
+if [[ -n "$IS_MACOS" ]]; then
+    # Homebrew (or similar packaging environments) install can contain some of
+    # the libraries that we're going to build. However, they may be compiled
+    # with a MACOSX_DEPLOYMENT_TARGET that doesn't match what we want to use,
+    # and they may bring in other dependencies that we don't want. The same will
+    # be true of any other locations on the path. To avoid conflicts, strip the
+    # path down to the bare minimum (which, on macOS, won't include any
+    # development dependencies).
+    export PATH="$BUILD_PREFIX/bin:$(dirname $(which python3)):/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin"
+    export CMAKE_PREFIX_PATH=$BUILD_PREFIX
+
+    # Ensure the basic structure of the build prefix directory exists.
+    mkdir -p "$BUILD_PREFIX/bin"
+    mkdir -p "$BUILD_PREFIX/lib"
+
+    # Ensure pkg-config is available
+    build_pkg_config
+    # Ensure cmake is available
+    python3 -m pip install cmake
+fi
+
+wrap_wheel_builder build
+
+# Return to the project root to finish the build
+popd > /dev/null
+
+# Append licenses
+for filename in wheels/dependency_licenses/*; do
+  echo -e "\n\n----\n\n$(basename $filename | cut -f 1 -d '.')\n" | cat >> LICENSE
+  cat $filename >> LICENSE
+done
diff --git a/.github/workflows/wheels-test.ps1 b/.github/workflows/wheels-test.ps1
new file mode 100644
index 000000000..f593c7228
--- /dev/null
+++ b/.github/workflows/wheels-test.ps1
@@ -0,0 +1,22 @@
+param ([string]$venv, [string]$pillow="C:\pillow")
+$ErrorActionPreference  = 'Stop'
+$ProgressPreference = 'SilentlyContinue'
+Set-PSDebug -Trace 1
+if ("$venv" -like "*\cibw-run-*\pp*-win_amd64\*") {
+    # unlike CPython, PyPy requires Visual C++ Redistributable to be installed
+    [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+    Invoke-WebRequest -Uri 'https://aka.ms/vs/15/release/vc_redist.x64.exe' -OutFile 'vc_redist.x64.exe'
+    C:\vc_redist.x64.exe /install /quiet /norestart | Out-Null
+}
+$env:path += ";$pillow\winbuild\build\bin\"
+& "$venv\Scripts\activate.ps1"
+& reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\python.exe" /v "GlobalFlag" /t REG_SZ /d "0x02000000" /f
+cd $pillow
+& python -VV
+if (!$?) { exit $LASTEXITCODE }
+& python selftest.py
+if (!$?) { exit $LASTEXITCODE }
+& python -m pytest -vx Tests\check_wheel.py
+if (!$?) { exit $LASTEXITCODE }
+& python -m pytest -vx Tests
+if (!$?) { exit $LASTEXITCODE }
diff --git a/.github/workflows/wheels-test.sh b/.github/workflows/wheels-test.sh
new file mode 100755
index 000000000..ce83a4278
--- /dev/null
+++ b/.github/workflows/wheels-test.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+set -e
+
+# Ensure fribidi is installed by the system.
+if [[ "$OSTYPE" == "darwin"* ]]; then
+    # If Homebrew is on the path during the build, it may leak into the wheels.
+    # However, we *do* need Homebrew to provide a copy of fribidi for
+    # testing purposes so that we can verify the fribidi shim works as expected.
+    if [[ "$(uname -m)" == "x86_64" ]]; then
+        HOMEBREW_PREFIX=/usr/local
+    else
+        HOMEBREW_PREFIX=/opt/homebrew
+    fi
+    $HOMEBREW_PREFIX/bin/brew install fribidi
+
+    # Add the lib folder for fribidi so that the vendored library can be found.
+    # Don't use $HOMEWBREW_PREFIX/lib directly - use the lib folder where the
+    # installed copy of fribidi is cellared. This ensures we don't pick up the
+    # Homebrew version of any other library that we're dependent on (most notably,
+    # freetype).
+    export DYLD_LIBRARY_PATH=$(dirname $(realpath $HOMEBREW_PREFIX/lib/libfribidi.dylib))
+elif [ "${AUDITWHEEL_POLICY::9}" == "musllinux" ]; then
+    apk add curl fribidi
+else
+    yum install -y fribidi
+fi
+
+python3 -m pip install numpy
+
+if [ ! -d "test-images-main" ]; then
+    curl -fsSL -o pillow-test-images.zip https://github.com/python-pillow/test-images/archive/main.zip
+    unzip pillow-test-images.zip
+    mv test-images-main/* Tests/images
+fi
+
+# Runs tests
+python3 selftest.py
+python3 -m pytest Tests/check_wheel.py
+python3 -m pytest
diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
new file mode 100644
index 000000000..45f186341
--- /dev/null
+++ b/.github/workflows/wheels.yml
@@ -0,0 +1,314 @@
+name: Wheels
+
+on:
+  schedule:
+  #        ┌───────────── minute (0 - 59)
+  #        │  ┌───────────── hour (0 - 23)
+  #        │  │ ┌───────────── day of the month (1 - 31)
+  #        │  │ │ ┌───────────── month (1 - 12 or JAN-DEC)
+  #        │  │ │ │ ┌───────────── day of the week (0 - 6 or SUN-SAT)
+  #        │  │ │ │ │
+  - cron: "42 1 * * 0,3"
+  push:
+    paths:
+      - ".ci/requirements-cibw.txt"
+      - ".github/workflows/wheel*"
+      - "setup.py"
+      - "wheels/*"
+      - "winbuild/build_prepare.py"
+      - "winbuild/fribidi.cmake"
+    tags:
+      - "*"
+  pull_request:
+    paths:
+      - ".ci/requirements-cibw.txt"
+      - ".github/workflows/wheel*"
+      - "setup.py"
+      - "wheels/*"
+      - "winbuild/build_prepare.py"
+      - "winbuild/fribidi.cmake"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  FORCE_COLOR: 1
+
+jobs:
+  build-1-QEMU-emulated-wheels:
+    if: github.event_name != 'schedule'
+    name: aarch64 ${{ matrix.python-version }} ${{ matrix.spec }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version:
+          - pp310
+          - cp3{9,10,11}
+          - cp3{12,13}
+        spec:
+          - manylinux2014
+          - manylinux_2_28
+          - musllinux
+        exclude:
+          - { python-version: pp310, spec: musllinux }
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+          submodules: true
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.x"
+
+      # https://github.com/docker/setup-qemu-action
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Install cibuildwheel
+        run: |
+          python3 -m pip install -r .ci/requirements-cibw.txt
+
+      - name: Build wheels
+        run: |
+          python3 -m cibuildwheel --output-dir wheelhouse
+        env:
+          # Build only the currently selected Linux architecture (so we can
+          # parallelise for speed).
+          CIBW_ARCHS: "aarch64"
+          # Likewise, select only one Python version per job to speed this up.
+          CIBW_BUILD: "${{ matrix.python-version }}-${{ matrix.spec == 'musllinux' && 'musllinux' || 'manylinux' }}*"
+          CIBW_PRERELEASE_PYTHONS: True
+          # Extra options for manylinux.
+          CIBW_MANYLINUX_AARCH64_IMAGE: ${{ matrix.spec }}
+          CIBW_MANYLINUX_PYPY_AARCH64_IMAGE: ${{ matrix.spec }}
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: dist-qemu-${{ matrix.python-version }}-${{ matrix.spec }}
+          path: ./wheelhouse/*.whl
+
+  build-2-native-wheels:
+    if: github.event_name != 'schedule' || github.repository_owner == 'python-pillow'
+    name: ${{ matrix.name }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: "macOS 10.10 x86_64"
+            os: macos-13
+            cibw_arch: x86_64
+            build: "cp3{9,10,11}*"
+            macosx_deployment_target: "10.10"
+          - name: "macOS 10.13 x86_64"
+            os: macos-13
+            cibw_arch: x86_64
+            build: "cp3{12,13}*"
+            macosx_deployment_target: "10.13"
+          - name: "macOS 10.15 x86_64"
+            os: macos-13
+            cibw_arch: x86_64
+            build: "pp310*"
+            macosx_deployment_target: "10.15"
+          - name: "macOS arm64"
+            os: macos-latest
+            cibw_arch: arm64
+            macosx_deployment_target: "11.0"
+          - name: "manylinux2014 and musllinux x86_64"
+            os: ubuntu-latest
+            cibw_arch: x86_64
+          - name: "manylinux_2_28 x86_64"
+            os: ubuntu-latest
+            cibw_arch: x86_64
+            build: "*manylinux*"
+            manylinux: "manylinux_2_28"
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+          submodules: true
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.x"
+
+      - name: Install cibuildwheel
+        run: |
+          python3 -m pip install -r .ci/requirements-cibw.txt
+
+      - name: Build wheels
+        run: |
+          python3 -m cibuildwheel --output-dir wheelhouse
+        env:
+          CIBW_ARCHS: ${{ matrix.cibw_arch }}
+          CIBW_BUILD: ${{ matrix.build }}
+          CIBW_FREE_THREADED_SUPPORT: True
+          CIBW_MANYLINUX_PYPY_X86_64_IMAGE: ${{ matrix.manylinux }}
+          CIBW_MANYLINUX_X86_64_IMAGE: ${{ matrix.manylinux }}
+          CIBW_PRERELEASE_PYTHONS: True
+          CIBW_SKIP: pp39-*
+          MACOSX_DEPLOYMENT_TARGET: ${{ matrix.macosx_deployment_target }}
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: dist-${{ matrix.os }}${{ matrix.macosx_deployment_target && format('-{0}', matrix.macosx_deployment_target) }}-${{ matrix.cibw_arch }}${{ matrix.manylinux && format('-{0}', matrix.manylinux) }}
+          path: ./wheelhouse/*.whl
+
+  windows:
+    if: github.event_name != 'schedule' || github.repository_owner == 'python-pillow'
+    name: Windows ${{ matrix.cibw_arch }}
+    runs-on: windows-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - cibw_arch: x86
+          - cibw_arch: AMD64
+          - cibw_arch: ARM64
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: Checkout extra test images
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+          repository: python-pillow/test-images
+          path: Tests\test-images
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.x"
+
+      - name: Install cibuildwheel
+        run: |
+          python.exe -m pip install -r .ci/requirements-cibw.txt
+
+      - name: Prepare for build
+        run: |
+          choco install nasm --no-progress
+          echo "C:\Program Files\NASM" >> $env:GITHUB_PATH
+
+          # Install extra test images
+          xcopy /S /Y Tests\test-images\* Tests\images
+
+          & python.exe winbuild\build_prepare.py -v --no-imagequant --architecture=${{ matrix.cibw_arch }}
+        shell: pwsh
+
+      - name: Build wheels
+        run: |
+          setlocal EnableDelayedExpansion
+          for %%f in (winbuild\build\license\*) do (
+            set x=%%~nf
+            rem Skip FriBiDi license, it is not included in the wheel.
+            set fribidi=!x:~0,7!
+            if NOT !fribidi!==fribidi (
+              rem Skip imagequant license, it is not included in the wheel.
+              set libimagequant=!x:~0,13!
+              if NOT !libimagequant!==libimagequant (
+                echo. >> LICENSE
+                echo ===== %%~nf ===== >> LICENSE
+                echo. >> LICENSE
+                type %%f >> LICENSE
+              )
+            )
+          )
+          call winbuild\\build\\build_env.cmd
+          %pythonLocation%\python.exe -m cibuildwheel . --output-dir wheelhouse
+        env:
+          CIBW_ARCHS: ${{ matrix.cibw_arch }}
+          CIBW_BEFORE_ALL: "{package}\\winbuild\\build\\build_dep_all.cmd"
+          CIBW_CACHE_PATH: "C:\\cibw"
+          CIBW_FREE_THREADED_SUPPORT: True
+          CIBW_PRERELEASE_PYTHONS: True
+          CIBW_SKIP: pp39-*
+          CIBW_TEST_SKIP: "*-win_arm64"
+          CIBW_TEST_COMMAND: 'docker run --rm
+            -v {project}:C:\pillow
+            -v C:\cibw:C:\cibw
+            -v %CD%\..\venv-test:%CD%\..\venv-test
+            -e CI -e GITHUB_ACTIONS
+            mcr.microsoft.com/windows/servercore:ltsc2022
+            powershell C:\pillow\.github\workflows\wheels-test.ps1 %CD%\..\venv-test'
+        shell: cmd
+
+      - name: Upload wheels
+        uses: actions/upload-artifact@v4
+        with:
+          name: dist-windows-${{ matrix.cibw_arch }}
+          path: ./wheelhouse/*.whl
+
+      - name: Upload fribidi.dll
+        uses: actions/upload-artifact@v4
+        with:
+          name: fribidi-windows-${{ matrix.cibw_arch }}
+          path: winbuild\build\bin\fribidi*
+
+  sdist:
+    if: github.event_name != 'schedule'
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
+
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: "3.x"
+        cache: pip
+        cache-dependency-path: "Makefile"
+
+    - run: make sdist
+
+    - uses: actions/upload-artifact@v4
+      with:
+        name: dist-sdist
+        path: dist/*.tar.gz
+
+  scientific-python-nightly-wheels-publish:
+    if: github.repository_owner == 'python-pillow' && (github.event_name == 'schedule' || github.event_name == 'workflow_dispatch')
+    needs: [build-2-native-wheels, windows]
+    runs-on: ubuntu-latest
+    name: Upload wheels to scientific-python-nightly-wheels
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          pattern: dist-*
+          path: dist
+          merge-multiple: true
+      - name: Upload wheels to scientific-python-nightly-wheels
+        uses: scientific-python/upload-nightly-action@82396a2ed4269ba06c6b2988bb4fd568ef3c3d6b # 0.6.1
+        with:
+          artifacts_path: dist
+          anaconda_nightly_upload_token: ${{ secrets.ANACONDA_ORG_UPLOAD_TOKEN }}
+
+  pypi-publish:
+    if: github.repository_owner == 'python-pillow' && github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+    needs: [build-1-QEMU-emulated-wheels, build-2-native-wheels, windows, sdist]
+    runs-on: ubuntu-latest
+    name: Upload release to PyPI
+    environment:
+      name: release-pypi
+      url: https://pypi.org/p/Pillow
+    permissions:
+      id-token: write
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          pattern: dist-*
+          path: dist
+          merge-multiple: true
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          attestations: true
diff --git a/.gitignore b/.gitignore
index 1dd6c9175..3033c2ea7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,6 +19,7 @@ lib64/
 parts/
 sdist/
 var/
+wheelhouse/
 *.egg-info/
 .installed.cfg
 *.egg
@@ -90,5 +91,9 @@ Tests/images/msp
 Tests/images/picins
 Tests/images/sunraster
 
+# Test and dependency downloads
+pillow-depends-main.zip
+pillow-test-images.zip
+
 # pyinstaller
 *.spec
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000..80d5ab16c
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "multibuild"]
+    path = wheels/multibuild
+    url = https://github.com/multi-build/multibuild.git
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 0ddc6beb4..ddc98fdc3 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,62 +1,86 @@
 repos:
-  - repo: https://github.com/psf/black
-    rev: 23.3.0
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.7.2
+    hooks:
+      - id: ruff
+        args: [--exit-non-zero-on-fix]
+
+  - repo: https://github.com/psf/black-pre-commit-mirror
+    rev: 24.10.0
     hooks:
       - id: black
-        args: [--target-version=py38]
-
-  - repo: https://github.com/PyCQA/isort
-    rev: 5.12.0
-    hooks:
-      - id: isort
 
   - repo: https://github.com/PyCQA/bandit
-    rev: 1.7.5
+    rev: 1.7.10
     hooks:
     - id: bandit
       args: [--severity-level=high]
       files: ^src/
 
-  - repo: https://github.com/asottile/yesqa
-    rev: v1.4.0
-    hooks:
-      - id: yesqa
-
   - repo: https://github.com/Lucas-C/pre-commit-hooks
-    rev: v1.5.1
+    rev: v1.5.5
     hooks:
       - id: remove-tabs
         exclude: (Makefile$|\.bat$|\.cmake$|\.eps$|\.fits$|\.gd$|\.opt$)
 
-  - repo: https://github.com/PyCQA/flake8
-    rev: 6.0.0
+  - repo: https://github.com/pre-commit/mirrors-clang-format
+    rev: v19.1.3
     hooks:
-      - id: flake8
-        additional_dependencies:
-          [flake8-2020, flake8-errmsg, flake8-implicit-str-concat]
+      - id: clang-format
+        types: [c]
+        exclude: ^src/thirdparty/
 
   - repo: https://github.com/pre-commit/pygrep-hooks
     rev: v1.10.0
     hooks:
-      - id: python-check-blanket-noqa
       - id: rst-backticks
 
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.4.0
+    rev: v5.0.0
     hooks:
+      - id: check-executables-have-shebangs
+      - id: check-shebang-scripts-are-executable
       - id: check-merge-conflict
       - id: check-json
+      - id: check-toml
       - id: check-yaml
+      - id: end-of-file-fixer
+        exclude: ^Tests/images/
+      - id: trailing-whitespace
+        exclude: ^.github/.*TEMPLATE|^Tests/(fonts|images)/
+
+  - repo: https://github.com/python-jsonschema/check-jsonschema
+    rev: 0.29.4
+    hooks:
+      - id: check-github-workflows
+      - id: check-readthedocs
+      - id: check-renovate
 
   - repo: https://github.com/sphinx-contrib/sphinx-lint
-    rev: v0.6.7
+    rev: v1.0.0
     hooks:
       - id: sphinx-lint
 
+  - repo: https://github.com/tox-dev/pyproject-fmt
+    rev: v2.5.0
+    hooks:
+      - id: pyproject-fmt
+
+  - repo: https://github.com/abravalheri/validate-pyproject
+    rev: v0.22
+    hooks:
+      - id: validate-pyproject
+        additional_dependencies: [trove-classifiers>=2024.10.12]
+
   - repo: https://github.com/tox-dev/tox-ini-fmt
-    rev: 1.3.0
+    rev: 1.4.1
     hooks:
       - id: tox-ini-fmt
 
+  - repo: meta
+    hooks:
+      - id: check-hooks-apply
+      - id: check-useless-excludes
+
 ci:
   autoupdate_schedule: monthly
diff --git a/.readthedocs.yml b/.readthedocs.yml
index bda03d944..def6282dd 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -3,9 +3,13 @@ version: 2
 formats: [pdf]
 
 build:
-  os: ubuntu-22.04
+  os: ubuntu-lts-latest
   tools:
-    python: "3.11"
+    python: "3"
+  jobs:
+    post_checkout:
+    - git remote add upstream https://github.com/python-pillow/Pillow.git # For forks
+    - git fetch upstream --tags
 
 python:
   install:
diff --git a/CHANGES.rst b/CHANGES.rst
index 9d95f3cd2..dfbbd24b3 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,12 +2,688 @@
 Changelog (Pillow)
 ==================
 
-10.0.0 (unreleased)
+11.1.0 and newer
+----------------
+
+See GitHub Releases:
+
+- https://github.com/python-pillow/Pillow/releases
+
+11.0.0 (2024-10-15)
 -------------------
 
-- Removed support for 32-bit #7228
+- Update licence to MIT-CMU #8460
+  [hugovk]
+
+- Conditionally define ImageCms type hint to avoid requiring core #8197
+  [radarhere]
+
+- Support writing LONG8 offsets in AppendingTiffWriter #8417
+  [radarhere]
+
+- Use ImageFile.MAXBLOCK when saving TIFF images #8461
+  [radarhere]
+
+- Do not close provided file handles with libtiff when saving #8458
+  [radarhere]
+
+- Support ImageFilter.BuiltinFilter for I;16* images #8438
+  [radarhere]
+
+- Use ImagingCore.ptr instead of ImagingCore.id #8341
+  [homm, radarhere, hugovk]
+
+- Updated EPS mode when opening images without transparency #8281
+  [Yay295, radarhere]
+
+- Use transparency when combining P frames from APNGs #8443
+  [radarhere]
+
+- Support all resampling filters when resizing I;16* images #8422
+  [radarhere]
+
+- Free memory on early return #8413
+  [radarhere]
+
+- Cast int before potentially exceeding INT_MAX #8402
+  [radarhere]
+
+- Check image value before use #8400
+  [radarhere]
+
+- Improved copying imagequant libraries #8420
+  [radarhere]
+
+- Use Capsule for WebP saving #8386
+  [homm, radarhere]
+
+- Fixed writing multiple StripOffsets to TIFF #8317
+  [Yay295, radarhere]
+
+- Fix dereference before checking for NULL in ImagingTransformAffine #8398
+  [PavlNekrasov]
+
+- Use transposed size after opening for TIFF images #8390
+  [radarhere, homm]
+
+- Improve ImageFont error messages #8338
+  [yngvem, radarhere, hugovk]
+
+- Mention MAX_TEXT_CHUNK limit in PNG error message #8391
+  [radarhere]
+
+- Cast Dib handle to int #8385
+  [radarhere]
+
+- Accept float stroke widths #8369
+  [radarhere]
+
+- Deprecate ICNS (width, height, scale) sizes in favour of load(scale) #8352
+  [radarhere]
+
+- Improved handling of RGBA palettes when saving GIF images #8366
+  [radarhere]
+
+- Deprecate isImageType #8364
+  [radarhere]
+
+- Support converting more modes to LAB by converting to RGBA first #8358
+  [radarhere]
+
+- Deprecate support for FreeType 2.9.0 #8356
+  [hugovk, radarhere]
+
+- Removed unused TiffImagePlugin IFD_LEGACY_API #8355
+  [radarhere]
+
+- Handle duplicate EXIF header #8350
+  [zakajd, radarhere]
+
+- Return early from BoxBlur if either width or height is zero #8347
+  [radarhere]
+
+- Check text is either string or bytes #8308
+  [radarhere]
+
+- Added writing XMP bytes to JPEG #8286
+  [radarhere]
+
+- Support JPEG2000 RGBA palettes #8256
+  [radarhere]
+
+- Expand C image to match GIF frame image size #8237
+  [radarhere]
+
+- Allow saving I;16 images as PPM #8231
+  [radarhere]
+
+- When IFD is missing, connect get_ifd() dictionary to Exif #8230
+  [radarhere]
+
+- Skip truncated ICO mask if LOAD_TRUNCATED_IMAGES is enabled #8180
+  [radarhere]
+
+- Treat unknown JPEG2000 colorspace as unspecified #8343
+  [radarhere]
+
+- Updated error message when saving WebP with invalid width or height #8322
   [radarhere, hugovk]
 
+- Remove warning if NumPy failed to raise an error during conversion #8326
+  [radarhere]
+
+- If left and right sides meet in ImageDraw.rounded_rectangle(), do not draw rectangle to fill gap #8304
+  [radarhere]
+
+- Remove WebP support without anim, mux/demux, and with buggy alpha #8213
+  [homm, radarhere]
+
+- Add missing TIFF CMYK;16B reader #8298
+  [homm]
+
+- Remove all WITH_* flags from _imaging.c and other flags #8211
+  [homm]
+
+- Improve ImageDraw2 shape methods #8265
+  [radarhere]
+
+- Lock around usages of imaging memory arenas #8238
+  [lysnikolaou]
+
+- Deprecate JpegImageFile huffman_ac and huffman_dc #8274
+  [radarhere]
+
+- Deprecate ImageMath lambda_eval and unsafe_eval options argument #8242
+  [radarhere]
+
+- Changed ContainerIO to subclass IO #8240
+  [radarhere]
+
+- Move away from APIs that use borrowed references under the free-threaded build #8216
+  [hugovk, lysnikolaou]
+
+- Allow size argument to resize() to be a NumPy array #8201
+  [radarhere]
+
+- Drop support for Python 3.8 #8183
+  [hugovk, radarhere]
+
+- Add support for Python 3.13 #8181
+  [hugovk, radarhere]
+
+- Fix incompatibility with NumPy 1.20 #8187
+  [neutrinoceros, radarhere]
+
+- Remove PSFile, PyAccess and USE_CFFI_ACCESS #8182
+  [hugovk, radarhere]
+
+10.4.0 (2024-07-01)
+-------------------
+
+- Raise FileNotFoundError if show_file() path does not exist #8178
+  [radarhere]
+
+- Improved reading 16-bit TGA images with colour #7965
+  [Yay295, radarhere]
+
+- Deprecate non-image ImageCms modes #8031
+  [radarhere]
+
+- Fixed processing multiple JPEG EXIF markers #8127
+  [radarhere]
+
+- Do not preserve EXIFIFD tag by default when saving TIFF images #8110
+  [radarhere]
+
+- Added ImageFont.load_default_imagefont() #8086
+  [radarhere]
+
+- Added Image.WARN_POSSIBLE_FORMATS #8063
+  [radarhere]
+
+- Remove zero-byte end padding when parsing any XMP data #8171
+  [radarhere]
+
+- Do not detect Ultra HDR images as MPO #8056
+  [radarhere]
+
+- Raise SyntaxError specific to JP2 #8146
+  [Yay295, radarhere]
+
+- Do not use first frame duration for other frames when saving APNG images #8104
+  [radarhere]
+
+- Consider I;16 pixel size when using a 1 mode mask #8112
+  [radarhere]
+
+- When saving multiple PNG frames, convert to mode rather than raw mode #8087
+  [radarhere]
+
+- Added byte support to FreeTypeFont #8141
+  [radarhere]
+
+- Allow float center for rotate operations #8114
+  [radarhere]
+
+- Do not read layers immediately when opening PSD images #8039
+  [radarhere]
+
+- Restore original thread state #8065
+  [radarhere]
+
+- Read IM and TIFF images as RGB, rather than RGBX #7997
+  [radarhere]
+
+- Only preserve TIFF IPTC_NAA_CHUNK tag if type is BYTE or UNDEFINED #7948
+  [radarhere]
+
+- Clarify ImageDraw2 error message when size is missing #8165
+  [radarhere]
+
+- Support unpacking more rawmodes to RGBA palettes #7966
+  [radarhere]
+
+- Removed support for Qt 5 #8159
+  [radarhere]
+
+- Improve ``ImageFont.freetype`` support for XDG directories on Linux #8135
+  [mamg22, radarhere]
+
+- Improved consistency of XMP handling #8069
+  [radarhere]
+
+- Use pkg-config to help find libwebp and raqm #8142
+  [radarhere]
+
+- Accept 't' suffix for libtiff version #8126, #8129
+  [radarhere]
+
+- Deprecate ImageDraw.getdraw hints parameter #8124
+  [radarhere, hugovk]
+
+- Added ImageDraw circle() #8085
+  [void4, hugovk, radarhere]
+
+- Add mypy target to Makefile #8077
+  [Yay295]
+
+- Added more modes to Image.MODES #7984
+  [radarhere]
+
+- Deprecate BGR;15, BGR;16 and BGR;24 modes #7978
+  [radarhere, hugovk]
+
+- Fix ImagingAccess for I;16N on big-endian #7921
+  [Yay295, radarhere]
+
+- Support reading P mode TIFF images with padding #7996
+  [radarhere]
+
+- Deprecate support for libtiff < 4 #7998
+  [radarhere, hugovk]
+
+- Corrected ImageShow UnixViewer command #7987
+  [radarhere]
+
+- Use functools.cached_property in ImageStat #7952
+  [nulano, hugovk, radarhere]
+
+- Add support for reading BITMAPV2INFOHEADER and BITMAPV3INFOHEADER #7956
+  [Cirras, radarhere]
+
+- Support reading CMYK JPEG2000 images #7947
+  [radarhere]
+
+10.3.0 (2024-04-01)
+-------------------
+
+- CVE-2024-28219: Use ``strncpy`` to avoid buffer overflow #7928
+  [radarhere, hugovk]
+
+- Deprecate ``eval()``, replacing it with ``lambda_eval()`` and ``unsafe_eval()`` #7927
+  [radarhere, hugovk]
+
+- Raise ``ValueError`` if seeking to greater than offset-sized integer in TIFF #7883
+  [radarhere]
+
+- Add ``--report`` argument to ``__main__.py`` to omit supported formats #7818
+  [nulano, radarhere, hugovk]
+
+- Added RGB to I;16, I;16L, I;16B and I;16N conversion #7918, #7920
+  [radarhere]
+
+- Fix editable installation with custom build backend and configuration options #7658
+  [nulano, radarhere]
+
+- Fix putdata() for I;16N on big-endian #7209
+  [Yay295, hugovk, radarhere]
+
+- Determine MPO size from markers, not EXIF data #7884
+  [radarhere]
+
+- Improved conversion from RGB to RGBa, LA and La #7888
+  [radarhere]
+
+- Support FITS images with GZIP_1 compression #7894
+  [radarhere]
+
+- Use I;16 mode for 9-bit JPEG 2000 images #7900
+  [scaramallion, radarhere]
+
+- Raise ValueError if kmeans is negative #7891
+  [radarhere]
+
+- Remove TIFF tag OSUBFILETYPE when saving using libtiff #7893
+  [radarhere]
+
+- Raise ValueError for negative values when loading P1-P3 PPM images #7882
+  [radarhere]
+
+- Added reading of JPEG2000 palettes #7870
+  [radarhere]
+
+- Added alpha_quality argument when saving WebP images #7872
+  [radarhere]
+
+- Fixed joined corners for ImageDraw rounded_rectangle() non-integer dimensions #7881
+  [radarhere]
+
+- Stop reading EPS image at EOF marker #7753
+  [radarhere]
+
+- PSD layer co-ordinates may be negative #7706
+  [radarhere]
+
+- Use subprocess with CREATE_NO_WINDOW flag in ImageShow WindowsViewer #7791
+  [radarhere]
+
+- When saving GIF frame that restores to background color, do not fill identical pixels #7788
+  [radarhere]
+
+- Fixed reading PNG iCCP compression method #7823
+  [radarhere]
+
+- Allow writing IFDRational to UNDEFINED tag #7840
+  [radarhere]
+
+- Fix logged tag name when loading Exif data #7842
+  [radarhere]
+
+- Use maximum frame size in IHDR chunk when saving APNG images #7821
+  [radarhere]
+
+- Prevent opening P TGA images without a palette #7797
+  [radarhere]
+
+- Use palette when loading ICO images #7798
+  [radarhere]
+
+- Use consistent arguments for load_read and load_seek #7713
+  [radarhere]
+
+- Turn off nullability warnings for macOS SDK #7827
+  [radarhere]
+
+- Fix shift-sign issue in Convert.c #7838
+  [r-barnes, radarhere]
+
+- Open 16-bit grayscale PNGs as I;16 #7849
+  [radarhere]
+
+- Handle truncated chunks at the end of PNG images #7709
+  [lajiyuan, radarhere]
+
+- Match mask size to pasted image size in GifImagePlugin #7779
+  [radarhere]
+
+- Release GIL while calling ``WebPAnimDecoderGetNext`` #7782
+  [evanmiller, radarhere]
+
+- Fixed reading FLI/FLC images with a prefix chunk #7804
+  [twolife]
+
+- Update wl-paste handling and return None for some errors in grabclipboard() on Linux #7745
+  [nik012003, radarhere]
+
+- Remove execute bit from ``setup.py`` #7760
+  [hugovk]
+
+- Do not support using test-image-results to upload images after test failures #7739
+  [radarhere]
+
+- Changed ImageMath.ops to be static #7721
+  [radarhere]
+
+- Fix APNG info after seeking backwards more than twice #7701
+  [esoma, radarhere]
+
+- Deprecate ImageCms constants and versions() function #7702
+  [nulano, radarhere]
+
+- Added PerspectiveTransform #7699
+  [radarhere]
+
+- Add support for reading and writing grayscale PFM images #7696
+  [nulano, hugovk]
+
+- Add LCMS2 flags to ImageCms #7676
+  [nulano, radarhere, hugovk]
+
+- Rename x64 to AMD64 in winbuild #7693
+  [nulano]
+
+10.2.0 (2024-01-02)
+-------------------
+
+- Add ``keep_rgb`` option when saving JPEG to prevent conversion of RGB colorspace #7553
+  [bgilbert, radarhere]
+
+- Trim glyph size in ImageFont.getmask() #7669, #7672
+  [radarhere, nulano]
+
+- Deprecate IptcImagePlugin helpers #7664
+  [nulano, hugovk, radarhere]
+
+- Allow uncompressed TIFF images to be saved in chunks #7650
+  [radarhere]
+
+- Concatenate multiple JPEG EXIF markers #7496
+  [radarhere]
+
+- Changed IPTC tile tuple to match other plugins #7661
+  [radarhere]
+
+- Do not assign new fp attribute when exiting context manager #7566
+  [radarhere]
+
+- Support arbitrary masks for uncompressed RGB DDS images #7589
+  [radarhere, akx]
+
+- Support setting ROWSPERSTRIP tag #7654
+  [radarhere]
+
+- Apply ImageFont.MAX_STRING_LENGTH to ImageFont.getmask() #7662
+  [radarhere]
+
+- Optimise ``ImageColor`` using ``functools.lru_cache`` #7657
+  [hugovk]
+
+- Restricted environment keys for ImageMath.eval() #7655
+  [wiredfool, radarhere]
+
+- Optimise ``ImageMode.getmode`` using ``functools.lru_cache`` #7641
+  [hugovk, radarhere]
+
+- Fix incorrect color blending for overlapping glyphs #7497
+  [ZachNagengast, nulano, radarhere]
+
+- Attempt memory mapping when tile args is a string #7565
+  [radarhere]
+
+- Fill identical pixels with transparency in subsequent frames when saving GIF #7568
+  [radarhere]
+
+- Corrected duration when combining multiple GIF frames into single frame #7521
+  [radarhere]
+
+- Handle disposing GIF background from outside palette #7515
+  [radarhere]
+
+- Seek past the data when skipping a PSD layer #7483
+  [radarhere]
+
+- Import plugins relative to the module #7576
+  [deliangyang, jaxx0n]
+
+- Translate encoder error codes to strings; deprecate ``ImageFile.raise_oserror()`` #7609
+  [bgilbert, radarhere]
+
+- Support reading BC4U and DX10 BC1 images #6486
+  [REDxEYE, radarhere, hugovk]
+
+- Optimize ImageStat.Stat.extrema #7593
+  [florath, radarhere]
+
+- Handle pathlib.Path in FreeTypeFont #7578
+  [radarhere, hugovk, nulano]
+
+- Added support for reading DX10 BC4 DDS images #7603
+  [sambvfx, radarhere]
+
+- Optimized ImageStat.Stat.count #7599
+  [florath]
+
+- Correct PDF palette size when saving #7555
+  [radarhere]
+
+- Fixed closing file pointer with olefile 0.47 #7594
+  [radarhere]
+
+- Raise ValueError when TrueType font size is not greater than zero #7584, #7587
+  [akx, radarhere]
+
+- If absent, do not try to close fp when closing image #7557
+  [RaphaelVRossi, radarhere]
+
+- Allow configuring JPEG restart marker interval on save #7488
+  [bgilbert, radarhere]
+
+- Decrement reference count for PyObject #7549
+  [radarhere]
+
+- Implement ``streamtype=1`` option for tables-only JPEG encoding #7491
+  [bgilbert, radarhere]
+
+- If save_all PNG only has one frame, do not create animated image #7522
+  [radarhere]
+
+- Fixed frombytes() for images with a zero dimension #7493
+  [radarhere]
+
+10.1.0 (2023-10-15)
+-------------------
+
+- Added TrueType default font to allow for different sizes #7354
+  [radarhere]
+
+- Fixed invalid argument warning #7442
+  [radarhere]
+
+- Added ImageOps cover method #7412
+  [radarhere, hugovk]
+
+- Catch struct.error from truncated EXIF when reading JPEG DPI #7458
+  [radarhere]
+
+- Consider default image when selecting mode for PNG save_all #7437
+  [radarhere]
+
+- Support BGR;15, BGR;16 and BGR;24 access, unpacking and putdata #7303
+  [radarhere]
+
+- Added CMYK to RGB unpacker #7310
+  [radarhere]
+
+- Improved flexibility of XMP parsing #7274
+  [radarhere]
+
+- Support reading 8-bit YCbCr TIFF images #7415
+  [radarhere]
+
+- Allow saving I;16B images as PNG #7302
+  [radarhere]
+
+- Corrected drawing I;16 points and writing I;16 text #7257
+  [radarhere]
+
+- Set blue channel to 128 for BC5S #7413
+  [radarhere]
+
+- Increase flexibility when reading IPTC fields #7319
+  [radarhere]
+
+- Set C palette to be empty by default #7289
+  [radarhere]
+
+- Added gs_binary to control Ghostscript use on all platforms #7392
+  [radarhere]
+
+- Read bounding box information from the trailer of EPS files if specified #7382
+  [nopperl, radarhere]
+
+- Added reading 8-bit color DDS images #7426
+  [radarhere]
+
+- Added has_transparency_data #7420
+  [radarhere, hugovk]
+
+- Fixed bug when reading BC5S DDS images #7401
+  [radarhere]
+
+- Prevent TIFF orientation from being applied more than once #7383
+  [radarhere]
+
+- Use previous pixel alpha for QOI_OP_RGB #7357
+  [radarhere]
+
+- Added BC5U reading #7358
+  [radarhere]
+
+- Allow getpixel() to accept a list #7355
+  [radarhere, homm]
+
+- Allow GaussianBlur and BoxBlur to accept a sequence of x and y radii #7336
+  [radarhere]
+
+- Expand JPEG buffer size when saving optimized or progressive #7345
+  [radarhere]
+
+- Added session type check for Linux in ImageGrab.grabclipboard() #7332
+  [TheNooB2706, radarhere, hugovk]
+
+- Allow "loop=None" when saving GIF images #7329
+  [radarhere]
+
+- Fixed transparency when saving P mode images to PDF #7323
+  [radarhere]
+
+- Added saving LA images as PDFs #7299
+  [radarhere]
+
+- Set SMaskInData to 1 for PDFs with alpha #7316, #7317
+  [radarhere]
+
+- Changed Image mode property to be read-only by default #7307
+  [radarhere]
+
+- Silence exceptions in _repr_jpeg_ and _repr_png_ #7266
+  [mtreinish, radarhere]
+
+- Do not use transparency when saving GIF if it has been removed when normalizing mode #7284
+  [radarhere]
+
+- Fix missing symbols when libtiff depends on libjpeg #7270
+  [heitbaum]
+
+10.0.1 (2023-09-15)
+-------------------
+
+- Updated libwebp to 1.3.2 #7395
+  [radarhere]
+
+- Updated zlib to 1.3 #7344
+  [radarhere]
+
+10.0.0 (2023-07-01)
+-------------------
+
+- Fixed deallocating mask images #7246
+  [radarhere]
+
+- Added ImageFont.MAX_STRING_LENGTH #7244
+  [radarhere, hugovk]
+
+- Fix Windows build with pyproject.toml #7230
+  [hugovk, nulano, radarhere]
+
+- Do not close provided file handles with libtiff #7199
+  [radarhere]
+
+- Convert to HSV if mode is HSV in getcolor() #7226
+  [radarhere]
+
+- Added alpha_only argument to getbbox() #7123
+  [radarhere. hugovk]
+
+- Prioritise speed in _repr_png_ #7242
+  [radarhere]
+
+- Do not use CFFI access by default on PyPy #7236
+  [radarhere]
+
+- Limit size even if one dimension is zero in decompression bomb check #7235
+  [radarhere]
+
 - Use --config-settings instead of deprecated --global-option #7171
   [radarhere]
 
@@ -2053,7 +2729,7 @@ Changelog (Pillow)
 - Cache EXIF information #3498
   [Glandos]
 
-- Added transparency for all PNG greyscale modes #3744
+- Added transparency for all PNG grayscale modes #3744
   [radarhere]
 
 - Fix deprecation warnings in Python 3.8 #3749
@@ -3962,7 +4638,7 @@ Changelog (Pillow)
 - Documentation changes, URL update, transpose, release checklist
   [radarhere]
 
-- Fixed saving to nonexistant files specified by pathlib.Path objects #1748 (fixes #1747)
+- Fixed saving to nonexistent files specified by pathlib.Path objects #1748 (fixes #1747)
   [radarhere]
 
 - Round Image.crop arguments to the nearest integer #1745 (fixes #1744)
@@ -4555,7 +5231,7 @@ Changelog (Pillow)
 - Fix Bicubic interpolation #970
   [homm]
 
-- Support for 4-bit greyscale TIFF images #980
+- Support for 4-bit grayscale TIFF images #980
   [hugovk]
 
 - Updated manifest #957
@@ -5705,8 +6381,8 @@ http://svn.effbot.org/public/pil/
   a polyline, independent of line angle.
 
 - Fixed bearing calculation and clipping in the ImageFont truetype
-  renderer; this could lead to clipped text, or crashes in the low-
-  level _imagingft module.  (based on input from Adam Twardoch and
+  renderer; this could lead to clipped text, or crashes in the low-level
+  _imagingft module.  (based on input from Adam Twardoch and
   others).
 
 - Added ImageQt wrapper module, for converting PIL Image objects to
@@ -5787,8 +6463,7 @@ http://svn.effbot.org/public/pil/
 1.1.5c2 and 1.1.5 final
 -----------------------
 
-- Added experimental PERSPECTIVE transform method (from Jeff Breiden-
-  bach).
+- Added experimental PERSPECTIVE transform method (from Jeff Breidenbach).
 
 1.1.5c1
 -------
@@ -5860,8 +6535,8 @@ http://svn.effbot.org/public/pil/
 
 - Fixed BILINEAR/BICUBIC/ANTIALIAS filtering for mode "LA".
 
-- Added "getcolors()" method.  This is similar to the existing histo-
-  gram method, but looks at color values instead of individual layers,
+- Added "getcolors()" method.  This is similar to the existing histogram
+  method, but looks at color values instead of individual layers,
   and returns an unsorted list of (count, color) tuples.
 
   By default, the method returns None if finds more than 256 colors.
@@ -6077,8 +6752,8 @@ http://svn.effbot.org/public/pil/
 
 - Added limited support for "bitfield compression" in BMP files
   and DIB buffers, for 15-bit, 16-bit, and 32-bit images.  This
-  also fixes a problem with ImageGrab module when copying screen-
-  dumps from the clipboard on 15/16/32-bit displays.
+  also fixes a problem with ImageGrab module when copying screendumps
+  from the clipboard on 15/16/32-bit displays.
 
 - Added experimental WAL (Quake 2 textures) loader.  To use this
   loader, import WalImageFile and call the "open" method in that
@@ -6189,8 +6864,8 @@ http://svn.effbot.org/public/pil/
 1.1.3 final
 -----------
 
-- Made setup.py look for old versions of zlib.  For some back-
-  ground, see: https://zlib.net/advisory-2002-03-11.txt
+- Made setup.py look for old versions of zlib.  For some background,
+  see: https://zlib.net/advisory-2002-03-11.txt
 
 1.1.3c2
 -------
@@ -6381,8 +7056,8 @@ http://svn.effbot.org/public/pil/
   supports all major PIL image modes (including F and I).
 
 - The ImageFile module now includes a Parser class, which can
-  be used to incrementally decode an image file (while down-
-  loading it from the net, for example).  See the handbook for
+  be used to incrementally decode an image file (while downloading
+  it from the net, for example).  See the handbook for
   details.
 
 - "show" now converts non-standard modes to "L" or "RGB" (as
@@ -6520,8 +7195,8 @@ http://svn.effbot.org/public/pil/
 
 - The Image "transform" method now supports Image.QUAD transforms.
   The data argument is an 8-tuple giving the upper left, lower
-  left, lower right, and upper right corner of the source quadri-
-  lateral.  Also added Image.MESH transform which takes a list
+  left, lower right, and upper right corner of the source quadrilateral.
+  Also added Image.MESH transform which takes a list
   of quadrilaterals.
 
 - The Image "resize", "rotate", and "transform" methods now support
@@ -6631,7 +7306,7 @@ The test suite includes 750 individual tests.
 
 - You can now convert directly between all modes supported by
   PIL.  When converting colour images to "P", PIL defaults to
-  a "web" palette and dithering.  When converting greyscale
+  a "web" palette and dithering.  When converting grayscale
   images to "1", PIL uses a thresholding and dithering.
 
 - Added a "dither" option to "convert".  By default, "convert"
@@ -6709,13 +7384,13 @@ The test suite includes 530 individual tests.
 - Fixed "paste" to allow a mask also for mode "F" images.
 
 - The BMP driver now saves mode "1" images.  When loading images, the mode
-  is set to "L" for 8-bit files with greyscale palettes, and to "P" for
+  is set to "L" for 8-bit files with grayscale palettes, and to "P" for
   other 8-bit files.
 
 - The IM driver now reads and saves "1" images (file modes "0 1" or "L 1").
 
 - The JPEG and GIF drivers now saves "1" images.  For JPEG, the image
-  is saved as 8-bit greyscale (it will load as mode "L").  For GIF, the
+  is saved as 8-bit grayscale (it will load as mode "L").  For GIF, the
   image will be loaded as a "P" image.
 
 - Fixed a potential buffer overrun in the GIF encoder.
@@ -6746,8 +7421,8 @@ The test suite includes 400 individual tests.
   neither "short", "int" nor "long" are 32-bit wide.
 
 - Added file= and data= keyword arguments to PhotoImage and BitmapImage.
-  This allows you to use them as drop-in replacements for the corre-
-  sponding Tkinter classes.
+  This allows you to use them as drop-in replacements for the corresponding
+  Tkinter classes.
 
 - Removed bogus references to the crack coder (ImagingCrack).
 
@@ -7019,7 +7694,7 @@ The test suite includes 400 individual tests.
   drawing capabilities can be used to render vector and metafile
   formats.
 
-- Added restricted drivers for images from Image Tools (greyscale
+- Added restricted drivers for images from Image Tools (grayscale
   only) and LabEye/IFUNC (common interchange modes only).
 
 - Some minor improvements to the sample scripts provided in the
@@ -7174,7 +7849,7 @@ The test suite includes 400 individual tests.
 - A handbook is available (distributed separately).
 
 - The coordinate system is changed so that (0,0) is now located
-  in the upper left corner.  This is in compliancy with ISO 12087
+  in the upper left corner.  This is in compliance with ISO 12087
   and 90% of all other image processing and graphics libraries.
 
 - Modes "1" (bilevel) and "P" (palette) have been introduced.  Note
diff --git a/LICENSE b/LICENSE
index cf65e86d7..8837c290c 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,13 +1,13 @@
 The Python Imaging Library (PIL) is
 
     Copyright © 1997-2011 by Secret Labs AB
-    Copyright © 1995-2011 by Fredrik Lundh
+    Copyright © 1995-2011 by Fredrik Lundh and contributors
 
 Pillow is the friendly PIL fork. It is
 
-    Copyright © 2010-2023 by Jeffrey A. Clark (Alex) and contributors.
+    Copyright © 2010-2024 by Jeffrey A. Clark and contributors
 
-Like PIL, Pillow is licensed under the open source HPND License:
+Like PIL, Pillow is licensed under the open source MIT-CMU License:
 
 By obtaining, using, and/or copying this software and/or its associated
 documentation, you agree that you have read, understood, and will comply
diff --git a/MANIFEST.in b/MANIFEST.in
index 606e7e074..af25dfd2d 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -5,8 +5,10 @@ include *.md
 include *.py
 include *.rst
 include *.sh
+include *.toml
 include *.txt
 include *.yaml
+include .flake8
 include LICENSE
 include Makefile
 include tox.ini
@@ -29,3 +31,4 @@ global-exclude .git*
 global-exclude *.pyc
 global-exclude *.so
 prune .ci
+prune wheels
diff --git a/Makefile b/Makefile
index 57d756b47..53164b08a 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,6 @@
 
 .PHONY: clean
 clean:
-	python3 setup.py clean
 	rm src/PIL/*.so || true
 	rm -r build || true
 	find . -name __pycache__ | xargs rm -r || true
@@ -18,12 +17,10 @@ coverage:
 .PHONY: doc
 .PHONY: html
 doc html:
-	python3 -c "import PIL" > /dev/null 2>&1 || python3 -m pip install .
 	$(MAKE) -C docs html
 
 .PHONY: htmlview
 htmlview:
-	python3 -c "import PIL" > /dev/null 2>&1 || python3 -m pip install .
 	$(MAKE) -C docs htmlview
 
 .PHONY: doccheck
@@ -49,7 +46,7 @@ help:
 	@echo "  install            make and install"
 	@echo "  install-coverage   make and install with C coverage"
 	@echo "  lint               run the lint checks"
-	@echo "  lint-fix           run Black and isort to (mostly) fix lint issues"
+	@echo "  lint-fix           run Ruff to (mostly) fix lint issues"
 	@echo "  release-test       run code and package tests before release"
 	@echo "  test               run tests on installed Pillow"
 
@@ -78,8 +75,6 @@ release-test:
 	python3 selftest.py
 	python3 -m pytest Tests
 	python3 -m pip install .
-	-rm dist/*.egg
-	-rmdir dist
 	python3 -m pytest -qq
 	python3 -m check_manifest
 	python3 -m pyroma .
@@ -118,6 +113,11 @@ lint:
 .PHONY: lint-fix
 lint-fix:
 	python3 -c "import black" > /dev/null 2>&1 || python3 -m pip install black
-	python3 -c "import isort" > /dev/null 2>&1 || python3 -m pip install isort
-	python3 -m black --target-version py38 .
-	python3 -m isort .
+	python3 -m black .
+	python3 -c "import ruff" > /dev/null 2>&1 || python3 -m pip install ruff
+	python3 -m ruff check --fix .
+
+.PHONY: mypy
+mypy:
+	python3 -c "import tox" > /dev/null 2>&1 || python3 -m pip install tox
+	python3 -m tox -e mypy
diff --git a/README.md b/README.md
index af1ca57c2..057d0acf0 100644
--- a/README.md
+++ b/README.md
@@ -6,9 +6,9 @@
 
 ## Python Imaging Library (Fork)
 
-Pillow is the friendly PIL fork by [Jeffrey A. Clark (Alex) and
+Pillow is the friendly PIL fork by [Jeffrey A. Clark and
 contributors](https://github.com/python-pillow/Pillow/graphs/contributors).
-PIL is the Python Imaging Library by Fredrik Lundh and Contributors.
+PIL is the Python Imaging Library by Fredrik Lundh and contributors.
 As of 2019, Pillow development is
 [supported by Tidelift](https://tidelift.com/subscription/pkg/pypi-pillow?utm_source=pypi-pillow&utm_medium=readme&utm_campaign=enterprise).
 
@@ -45,16 +45,13 @@ As of 2019, Pillow development is
             <a href="https://ci.appveyor.com/project/python-pillow/Pillow"><img
                 alt="AppVeyor CI build status (Windows)"
                 src="https://img.shields.io/appveyor/build/python-pillow/Pillow/main.svg?label=Windows%20build"></a>
-            <a href="https://github.com/python-pillow/pillow-wheels/actions"><img
-                alt="GitHub Actions wheels build status (Wheels)"
-                src="https://github.com/python-pillow/pillow-wheels/workflows/Wheels/badge.svg"></a>
-            <a href="https://app.travis-ci.com/github/python-pillow/pillow-wheels"><img
-                alt="Travis CI wheels build status (aarch64)"
-                src="https://img.shields.io/travis/com/python-pillow/pillow-wheels/main.svg?label=aarch64%20wheels"></a>
+            <a href="https://github.com/python-pillow/Pillow/actions/workflows/wheels.yml"><img
+                alt="GitHub Actions build status (Wheels)"
+                src="https://github.com/python-pillow/Pillow/workflows/Wheels/badge.svg"></a>
             <a href="https://app.codecov.io/gh/python-pillow/Pillow"><img
                 alt="Code coverage"
                 src="https://codecov.io/gh/python-pillow/Pillow/branch/main/graph/badge.svg"></a>
-            <a href="https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:pillow"><img
+            <a href="https://issues.oss-fuzz.com/issues?q=title:pillow"><img
                 alt="Fuzzing Status"
                 src="https://oss-fuzz-build-logs.storage.googleapis.com/badges/pillow.svg"></a>
         </td>
@@ -67,16 +64,16 @@ As of 2019, Pillow development is
                 src="https://zenodo.org/badge/17549/python-pillow/Pillow.svg"></a>
             <a href="https://tidelift.com/subscription/pkg/pypi-pillow?utm_source=pypi-pillow&utm_medium=badge"><img
                 alt="Tidelift"
-                src="https://tidelift.com/badges/package/pypi/Pillow?style=flat"></a>
-            <a href="https://pypi.org/project/Pillow/"><img
+                src="https://tidelift.com/badges/package/pypi/pillow?style=flat"></a>
+            <a href="https://pypi.org/project/pillow/"><img
                 alt="Newest PyPI version"
                 src="https://img.shields.io/pypi/v/pillow.svg"></a>
-            <a href="https://pypi.org/project/Pillow/"><img
+            <a href="https://pypi.org/project/pillow/"><img
                 alt="Number of PyPI downloads"
                 src="https://img.shields.io/pypi/dm/pillow.svg"></a>
-            <a href="https://bestpractices.coreinfrastructure.org/projects/6331"><img
+            <a href="https://www.bestpractices.dev/projects/6331"><img
                 alt="OpenSSF Best Practices"
-                src="https://bestpractices.coreinfrastructure.org/projects/6331/badge"></a>
+                src="https://www.bestpractices.dev/projects/6331/badge"></a>
         </td>
     </tr>
     <tr>
@@ -85,9 +82,6 @@ As of 2019, Pillow development is
             <a href="https://gitter.im/python-pillow/Pillow?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge"><img
                 alt="Join the chat at https://gitter.im/python-pillow/Pillow"
                 src="https://badges.gitter.im/python-pillow/Pillow.svg"></a>
-            <a href="https://twitter.com/PythonPillow"><img
-                alt="Follow on https://twitter.com/PythonPillow"
-                src="https://img.shields.io/badge/tweet-on%20Twitter-00aced.svg"></a>
             <a href="https://fosstodon.org/@pillow"><img
                 alt="Follow on https://fosstodon.org/@pillow"
                 src="https://img.shields.io/badge/publish-on%20Mastodon-595aff.svg"
@@ -107,13 +101,13 @@ The core image library is designed for fast access to data stored in a few basic
 ## More Information
 
 - [Documentation](https://pillow.readthedocs.io/)
-  - [Installation](https://pillow.readthedocs.io/en/latest/installation.html)
+  - [Installation](https://pillow.readthedocs.io/en/latest/installation/basic-installation.html)
   - [Handbook](https://pillow.readthedocs.io/en/latest/handbook/index.html)
 - [Contribute](https://github.com/python-pillow/Pillow/blob/main/.github/CONTRIBUTING.md)
   - [Issues](https://github.com/python-pillow/Pillow/issues)
   - [Pull requests](https://github.com/python-pillow/Pillow/pulls)
 - [Release notes](https://pillow.readthedocs.io/en/stable/releasenotes/index.html)
-- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
+- [Changelog](https://github.com/python-pillow/Pillow/releases)
   - [Pre-fork](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst#pre-fork)
 
 ## Report a Vulnerability
diff --git a/RELEASING.md b/RELEASING.md
index 604bb1b8c..ebdbb6406 100644
--- a/RELEASING.md
+++ b/RELEASING.md
@@ -10,9 +10,8 @@ Released quarterly on January 2nd, April 1st, July 1st and October 15th.
 * [ ] Open a release ticket e.g. https://github.com/python-pillow/Pillow/issues/3154
 * [ ] Develop and prepare release in `main` branch.
 * [ ] Check [GitHub Actions](https://github.com/python-pillow/Pillow/actions) and [AppVeyor](https://ci.appveyor.com/project/python-pillow/Pillow) to confirm passing tests in `main` branch.
-* [ ] Check that all of the wheel builds [Pillow Wheel Builder](https://github.com/python-pillow/pillow-wheels) pass the tests in Travis CI and GitHub Actions.
+* [ ] Check that all the wheel builds pass the tests in the [GitHub Actions "Wheels" workflow](https://github.com/python-pillow/Pillow/actions/workflows/wheels.yml) jobs by manually triggering them.
 * [ ] In compliance with [PEP 440](https://peps.python.org/pep-0440/), update version identifier in `src/PIL/_version.py`
-* [ ] Update `CHANGES.rst`.
 * [ ] Run pre-release check via `make release-test` in a freshly cloned repo.
 * [ ] Create branch and tag for release e.g.:
   ```bash
@@ -20,17 +19,10 @@ Released quarterly on January 2nd, April 1st, July 1st and October 15th.
   git tag 5.2.0
   git push --tags
   ```
-* [ ] Create and check source distribution:
-  ```bash
-  make sdist
-  ```
-* [ ] Create [binary distributions](https://github.com/python-pillow/Pillow/blob/main/RELEASING.md#binary-distributions)
-* [ ] Check and upload all binaries and source distributions e.g.:
-  ```bash
-  python3 -m twine check --strict dist/*
-  python3 -m twine upload dist/Pillow-5.2.0*
-  ```
-* [ ] Publish the [release on GitHub](https://github.com/python-pillow/Pillow/releases)
+* [ ] Check the [GitHub Actions "Wheels" workflow](https://github.com/python-pillow/Pillow/actions/workflows/wheels.yml)
+  has passed, including the "Upload release to PyPI" job. This will have been triggered
+  by the new tag.
+* [ ] Publish the [release on GitHub](https://github.com/python-pillow/Pillow/releases).
 * [ ] In compliance with [PEP 440](https://peps.python.org/pep-0440/),
       increment and append `.dev0` to version identifier in `src/PIL/_version.py` and then:
   ```bash
@@ -41,7 +33,6 @@ Released quarterly on January 2nd, April 1st, July 1st and October 15th.
 Released as needed for security, installation or critical bug fixes.
 
 * [ ] Make necessary changes in `main` branch.
-* [ ] Update `CHANGES.rst`.
 * [ ] Check out release branch e.g.:
   ```bash
   git checkout -t remotes/origin/5.2.x
@@ -59,12 +50,9 @@ Released as needed for security, installation or critical bug fixes.
   ```bash
   make sdist
   ```
-* [ ] Create [binary distributions](https://github.com/python-pillow/Pillow/blob/main/RELEASING.md#binary-distributions)
-* [ ] Check and upload all binaries and source distributions e.g.:
-  ```bash
-  python3 -m twine check --strict dist/*
-  python3 -m twine upload dist/Pillow-5.2.1*
-  ```
+* [ ] Check the [GitHub Actions "Wheels" workflow](https://github.com/python-pillow/Pillow/actions/workflows/wheels.yml)
+  has passed, including the "Upload release to PyPI" job. This will have been triggered
+  by the new tag.
 * [ ] Publish the [release on GitHub](https://github.com/python-pillow/Pillow/releases) and then:
   ```bash
   git push
@@ -86,42 +74,17 @@ Released as needed privately to individual vendors for critical security-related
   git tag 2.5.3
   git push origin --tags
   ```
-* [ ] Create and check source distribution:
-  ```bash
-  make sdist
-  ```
-* [ ] Create [binary distributions](https://github.com/python-pillow/Pillow/blob/main/RELEASING.md#binary-distributions)
+* [ ] Check the [GitHub Actions "Wheels" workflow](https://github.com/python-pillow/Pillow/actions/workflows/wheels.yml)
+  has passed, including the "Upload release to PyPI" job. This will have been triggered
+  by the new tag.
 * [ ] Publish the [release on GitHub](https://github.com/python-pillow/Pillow/releases) and then:
   ```bash
   git push origin 2.5.x
   ```
 
-## Binary Distributions
-
-### macOS and Linux
-* [ ] Use the [Pillow Wheel Builder](https://github.com/python-pillow/pillow-wheels):
-  ```bash
-  git clone https://github.com/python-pillow/pillow-wheels
-  cd pillow-wheels
-  ./update-pillow-tag.sh [[release tag]]
-  ```
-* [ ] Download wheels from the [Pillow Wheel Builder release](https://github.com/python-pillow/pillow-wheels/releases)
-  and copy into `dist/`. For example using [GitHub CLI](https://github.com/cli/cli) from the main repo:
-  ```bash
-  gh release download --dir dist --pattern "*.whl" --repo python-pillow/pillow-wheels
-  ```
-
-### Windows
-* [ ] Download the artifacts from the [GitHub Actions "Test Windows" workflow](https://github.com/python-pillow/Pillow/actions/workflows/test-windows.yml)
-  and copy into `dist/`. For example using [GitHub CLI](https://github.com/cli/cli):
-  ```bash
-  gh run download --dir dist
-  # select dist-x.y.z
-  ```
-
 ## Publicize Release
 
-* [ ] Announce release availability via [Twitter](https://twitter.com/pythonpillow) and [Mastodon](https://fosstodon.org/@pillow) e.g. https://twitter.com/PythonPillow/status/1013789184354603010
+* [ ] Announce release availability via [Mastodon](https://fosstodon.org/@pillow) e.g. https://fosstodon.org/@pillow/110639450470725321
 
 ## Documentation
 
diff --git a/Tests/32bit_segfault_check.py b/Tests/32bit_segfault_check.py
new file mode 100755
index 000000000..06ed2ed2f
--- /dev/null
+++ b/Tests/32bit_segfault_check.py
@@ -0,0 +1,9 @@
+#!/usr/bin/env python3
+from __future__ import annotations
+
+import sys
+
+from PIL import Image
+
+if sys.maxsize < 2**32:
+    im = Image.new("L", (999999, 999999), 0)
diff --git a/Tests/bench_cffi_access.py b/Tests/bench_cffi_access.py
deleted file mode 100644
index 69ebef9b4..000000000
--- a/Tests/bench_cffi_access.py
+++ /dev/null
@@ -1,52 +0,0 @@
-import time
-
-from PIL import PyAccess
-
-from .helper import hopper
-
-# Not running this test by default. No DOS against CI.
-
-
-def iterate_get(size, access):
-    (w, h) = size
-    for x in range(w):
-        for y in range(h):
-            access[(x, y)]
-
-
-def iterate_set(size, access):
-    (w, h) = size
-    for x in range(w):
-        for y in range(h):
-            access[(x, y)] = (x % 256, y % 256, 0)
-
-
-def timer(func, label, *args):
-    iterations = 5000
-    starttime = time.time()
-    for x in range(iterations):
-        func(*args)
-        if time.time() - starttime > 10:
-            break
-    endtime = time.time()
-    print(
-        "{}: completed {} iterations in {:.4f}s, {:.6f}s per iteration".format(
-            label, x + 1, endtime - starttime, (endtime - starttime) / (x + 1.0)
-        )
-    )
-
-
-def test_direct():
-    im = hopper()
-    im.load()
-    # im = Image.new("RGB", (2000, 2000), (1, 3, 2))
-    caccess = im.im.pixel_access(False)
-    access = PyAccess.new(im, False)
-
-    assert caccess[(0, 0)] == access[(0, 0)]
-
-    print("Size: %sx%s" % im.size)
-    timer(iterate_get, "PyAccess - get", im.size, access)
-    timer(iterate_set, "PyAccess - set", im.size, access)
-    timer(iterate_get, "C-api - get", im.size, caccess)
-    timer(iterate_set, "C-api - set", im.size, caccess)
diff --git a/Tests/check_fli_oob.py b/Tests/check_fli_oob.py
index 7b3d4d7ee..e0057a2c2 100644
--- a/Tests/check_fli_oob.py
+++ b/Tests/check_fli_oob.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+from __future__ import annotations
 
 from PIL import Image
 
diff --git a/Tests/check_fli_overflow.py b/Tests/check_fli_overflow.py
index c600c45ed..5c89efc76 100644
--- a/Tests/check_fli_overflow.py
+++ b/Tests/check_fli_overflow.py
@@ -1,9 +1,11 @@
+from __future__ import annotations
+
 from PIL import Image
 
 TEST_FILE = "Tests/images/fli_overflow.fli"
 
 
-def test_fli_overflow():
+def test_fli_overflow() -> None:
     # this should not crash with a malloc error or access violation
     with Image.open(TEST_FILE) as im:
         im.load()
diff --git a/Tests/check_icns_dos.py b/Tests/check_icns_dos.py
index a34bee45c..ac6be4869 100644
--- a/Tests/check_icns_dos.py
+++ b/Tests/check_icns_dos.py
@@ -1,5 +1,6 @@
 # Tests potential DOS of IcnsImagePlugin with 0 length block.
 # Run from anywhere that PIL is importable.
+from __future__ import annotations
 
 from io import BytesIO
 
diff --git a/Tests/check_imaging_leaks.py b/Tests/check_imaging_leaks.py
index d07082aba..231789ca0 100755
--- a/Tests/check_imaging_leaks.py
+++ b/Tests/check_imaging_leaks.py
@@ -1,4 +1,8 @@
 #!/usr/bin/env python3
+from __future__ import annotations
+
+from typing import Any, Callable
+
 import pytest
 
 from PIL import Image
@@ -11,31 +15,37 @@ max_iterations = 10000
 pytestmark = pytest.mark.skipif(is_win32(), reason="requires Unix or macOS")
 
 
-def _get_mem_usage():
+def _get_mem_usage() -> float:
     from resource import RUSAGE_SELF, getpagesize, getrusage
 
     mem = getrusage(RUSAGE_SELF).ru_maxrss
     return mem * getpagesize() / 1024 / 1024
 
 
-def _test_leak(min_iterations, max_iterations, fn, *args, **kwargs):
+def _test_leak(
+    min_iterations: int,
+    max_iterations: int,
+    fn: Callable[..., Image.Image | None],
+    *args: Any,
+) -> None:
     mem_limit = None
     for i in range(max_iterations):
-        fn(*args, **kwargs)
+        fn(*args)
         mem = _get_mem_usage()
         if i < min_iterations:
             mem_limit = mem + 1
             continue
         msg = f"memory usage limit exceeded after {i + 1} iterations"
+        assert mem_limit is not None
         assert mem <= mem_limit, msg
 
 
-def test_leak_putdata():
+def test_leak_putdata() -> None:
     im = Image.new("RGB", (25, 25))
     _test_leak(min_iterations, max_iterations, im.putdata, im.getdata())
 
 
-def test_leak_getlist():
+def test_leak_getlist() -> None:
     im = Image.new("P", (25, 25))
     _test_leak(
         min_iterations,
diff --git a/Tests/check_j2k_dos.py b/Tests/check_j2k_dos.py
index 71dcea4f3..2c63c3402 100644
--- a/Tests/check_j2k_dos.py
+++ b/Tests/check_j2k_dos.py
@@ -1,5 +1,6 @@
 # Tests potential DOS of Jpeg2kImagePlugin with 0 length block.
 # Run from anywhere that PIL is importable.
+from __future__ import annotations
 
 from io import BytesIO
 
diff --git a/Tests/check_j2k_leaks.py b/Tests/check_j2k_leaks.py
old mode 100755
new mode 100644
index afe5836f3..bbe35b591
--- a/Tests/check_j2k_leaks.py
+++ b/Tests/check_j2k_leaks.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from io import BytesIO
 
 import pytest
@@ -18,7 +20,7 @@ pytestmark = [
 ]
 
 
-def test_leak_load():
+def test_leak_load() -> None:
     from resource import RLIMIT_AS, RLIMIT_STACK, setrlimit
 
     setrlimit(RLIMIT_STACK, (stack_size, stack_size))
@@ -28,7 +30,7 @@ def test_leak_load():
             im.load()
 
 
-def test_leak_save():
+def test_leak_save() -> None:
     from resource import RLIMIT_AS, RLIMIT_STACK, setrlimit
 
     setrlimit(RLIMIT_STACK, (stack_size, stack_size))
diff --git a/Tests/check_j2k_overflow.py b/Tests/check_j2k_overflow.py
index b16412898..dbdd5a4f5 100644
--- a/Tests/check_j2k_overflow.py
+++ b/Tests/check_j2k_overflow.py
@@ -1,9 +1,13 @@
+from __future__ import annotations
+
+from pathlib import Path
+
 import pytest
 
 from PIL import Image
 
 
-def test_j2k_overflow(tmp_path):
+def test_j2k_overflow(tmp_path: Path) -> None:
     im = Image.new("RGBA", (1024, 131584))
     target = str(tmp_path / "temp.jpc")
     with pytest.raises(OSError):
diff --git a/Tests/check_jp2_overflow.py b/Tests/check_jp2_overflow.py
old mode 100755
new mode 100644
index 0210505f5..954d68bf7
--- a/Tests/check_jp2_overflow.py
+++ b/Tests/check_jp2_overflow.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 # Reproductions/tests for OOB read errors in FliDecode.c
 
 # When run in python, all of these images should fail for
@@ -12,7 +10,7 @@
 # the output should be empty. There may be python issues
 # in the valgrind especially if run in a debug python
 # version.
-
+from __future__ import annotations
 
 from PIL import Image
 
diff --git a/Tests/check_jpeg_leaks.py b/Tests/check_jpeg_leaks.py
index 940c0b00d..5f290c6cd 100644
--- a/Tests/check_jpeg_leaks.py
+++ b/Tests/check_jpeg_leaks.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from io import BytesIO
 
 import pytest
@@ -109,14 +111,14 @@ standard_chrominance_qtable = (
         [standard_l_qtable, standard_chrominance_qtable],
     ),
 )
-def test_qtables_leak(qtables):
+def test_qtables_leak(qtables: tuple[tuple[int, ...]] | list[tuple[int, ...]]) -> None:
     im = hopper("RGB")
     for _ in range(iterations):
         test_output = BytesIO()
         im.save(test_output, "JPEG", qtables=qtables)
 
 
-def test_exif_leak():
+def test_exif_leak() -> None:
     """
     pre patch:
 
@@ -179,7 +181,7 @@ def test_exif_leak():
         im.save(test_output, "JPEG", exif=exif)
 
 
-def test_base_save():
+def test_base_save() -> None:
     """
     base case:
         MB
diff --git a/Tests/check_large_memory.py b/Tests/check_large_memory.py
index 219788d7b..a9ce79e57 100644
--- a/Tests/check_large_memory.py
+++ b/Tests/check_large_memory.py
@@ -1,3 +1,9 @@
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+from types import ModuleType
+
 import pytest
 
 from PIL import Image
@@ -12,6 +18,7 @@ from PIL import Image
 # 2.7 and 3.2.
 
 
+numpy: ModuleType | None
 try:
     import numpy
 except ImportError:
@@ -21,23 +28,27 @@ YDIM = 32769
 XDIM = 48000
 
 
-def _write_png(tmp_path, xdim, ydim):
+pytestmark = pytest.mark.skipif(sys.maxsize <= 2**32, reason="requires 64-bit system")
+
+
+def _write_png(tmp_path: Path, xdim: int, ydim: int) -> None:
     f = str(tmp_path / "temp.png")
     im = Image.new("L", (xdim, ydim), 0)
     im.save(f)
 
 
-def test_large(tmp_path):
+def test_large(tmp_path: Path) -> None:
     """succeeded prepatch"""
     _write_png(tmp_path, XDIM, YDIM)
 
 
-def test_2gpx(tmp_path):
+def test_2gpx(tmp_path: Path) -> None:
     """failed prepatch"""
     _write_png(tmp_path, XDIM, XDIM)
 
 
 @pytest.mark.skipif(numpy is None, reason="Numpy is not installed")
-def test_size_greater_than_int():
+def test_size_greater_than_int() -> None:
+    assert numpy is not None
     arr = numpy.ndarray(shape=(16394, 16394))
     Image.fromarray(arr)
diff --git a/Tests/check_large_memory_numpy.py b/Tests/check_large_memory_numpy.py
index c54894721..f4ca8d0aa 100644
--- a/Tests/check_large_memory_numpy.py
+++ b/Tests/check_large_memory_numpy.py
@@ -1,3 +1,8 @@
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+
 import pytest
 
 from PIL import Image
@@ -17,7 +22,10 @@ YDIM = 32769
 XDIM = 48000
 
 
-def _write_png(tmp_path, xdim, ydim):
+pytestmark = pytest.mark.skipif(sys.maxsize <= 2**32, reason="requires 64-bit system")
+
+
+def _write_png(tmp_path: Path, xdim: int, ydim: int) -> None:
     dtype = np.uint8
     a = np.zeros((xdim, ydim), dtype=dtype)
     f = str(tmp_path / "temp.png")
@@ -25,11 +33,11 @@ def _write_png(tmp_path, xdim, ydim):
     im.save(f)
 
 
-def test_large(tmp_path):
+def test_large(tmp_path: Path) -> None:
     """succeeded prepatch"""
     _write_png(tmp_path, XDIM, YDIM)
 
 
-def test_2gpx(tmp_path):
+def test_2gpx(tmp_path: Path) -> None:
     """failed prepatch"""
     _write_png(tmp_path, XDIM, XDIM)
diff --git a/Tests/check_libtiff_segfault.py b/Tests/check_libtiff_segfault.py
index bd7f407e4..84bda53ed 100644
--- a/Tests/check_libtiff_segfault.py
+++ b/Tests/check_libtiff_segfault.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image
@@ -5,7 +7,7 @@ from PIL import Image
 TEST_FILE = "Tests/images/libtiff_segfault.tif"
 
 
-def test_libtiff_segfault():
+def test_libtiff_segfault() -> None:
     """This test should not segfault. It will on Pillow <= 3.1.0 and
     libtiff >= 4.0.0
     """
diff --git a/Tests/check_png_dos.py b/Tests/check_png_dos.py
index f4a129f50..63d6657bc 100644
--- a/Tests/check_png_dos.py
+++ b/Tests/check_png_dos.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import zlib
 from io import BytesIO
 
@@ -6,7 +8,7 @@ from PIL import Image, ImageFile, PngImagePlugin
 TEST_FILE = "Tests/images/png_decompression_dos.png"
 
 
-def test_ignore_dos_text():
+def test_ignore_dos_text() -> None:
     ImageFile.LOAD_TRUNCATED_IMAGES = True
 
     try:
@@ -15,6 +17,7 @@ def test_ignore_dos_text():
     finally:
         ImageFile.LOAD_TRUNCATED_IMAGES = False
 
+    assert isinstance(im, PngImagePlugin.PngImageFile)
     for s in im.text.values():
         assert len(s) < 1024 * 1024, "Text chunk larger than 1M"
 
@@ -22,7 +25,7 @@ def test_ignore_dos_text():
         assert len(s) < 1024 * 1024, "Text chunk larger than 1M"
 
 
-def test_dos_text():
+def test_dos_text() -> None:
     try:
         im = Image.open(TEST_FILE)
         im.load()
@@ -30,11 +33,12 @@ def test_dos_text():
         assert msg, "Decompressed Data Too Large"
         return
 
+    assert isinstance(im, PngImagePlugin.PngImageFile)
     for s in im.text.values():
         assert len(s) < 1024 * 1024, "Text chunk larger than 1M"
 
 
-def test_dos_total_memory():
+def test_dos_total_memory() -> None:
     im = Image.new("L", (1, 1))
     compressed_data = zlib.compress(b"a" * 1024 * 1023)
 
@@ -51,10 +55,11 @@ def test_dos_total_memory():
     try:
         im2 = Image.open(b)
     except ValueError as msg:
-        assert "Too much memory" in msg
+        assert "Too much memory" in str(msg)
         return
 
     total_len = 0
+    assert isinstance(im2, PngImagePlugin.PngImageFile)
     for txt in im2.text.values():
         total_len += len(txt)
     assert total_len < 64 * 1024 * 1024, "Total text chunks greater than 64M"
diff --git a/Tests/check_release_notes.py b/Tests/check_release_notes.py
index 0a9a898d7..cf414d7ff 100644
--- a/Tests/check_release_notes.py
+++ b/Tests/check_release_notes.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import sys
 from pathlib import Path
 
diff --git a/Tests/check_wheel.py b/Tests/check_wheel.py
new file mode 100644
index 000000000..4b91984f5
--- /dev/null
+++ b/Tests/check_wheel.py
@@ -0,0 +1,43 @@
+from __future__ import annotations
+
+import sys
+
+from PIL import features
+
+
+def test_wheel_modules() -> None:
+    expected_modules = {"pil", "tkinter", "freetype2", "littlecms2", "webp"}
+
+    # tkinter is not available in cibuildwheel installed CPython on Windows
+    try:
+        import tkinter
+
+        assert tkinter
+    except ImportError:
+        expected_modules.remove("tkinter")
+
+    assert set(features.get_supported_modules()) == expected_modules
+
+
+def test_wheel_codecs() -> None:
+    expected_codecs = {"jpg", "jpg_2000", "zlib", "libtiff"}
+
+    assert set(features.get_supported_codecs()) == expected_codecs
+
+
+def test_wheel_features() -> None:
+    expected_features = {
+        "webp_anim",
+        "webp_mux",
+        "transp_webp",
+        "raqm",
+        "fribidi",
+        "harfbuzz",
+        "libjpeg_turbo",
+        "xcb",
+    }
+
+    if sys.platform == "win32":
+        expected_features.remove("xcb")
+
+    assert set(features.get_supported_features()) == expected_features
diff --git a/Tests/conftest.py b/Tests/conftest.py
index 66da7593c..e00d1f019 100644
--- a/Tests/conftest.py
+++ b/Tests/conftest.py
@@ -1,7 +1,11 @@
+from __future__ import annotations
+
 import io
 
+import pytest
 
-def pytest_report_header(config):
+
+def pytest_report_header(config: pytest.Config) -> str:
     try:
         from PIL import features
 
@@ -12,7 +16,7 @@ def pytest_report_header(config):
         return f"pytest_report_header failed: {e}"
 
 
-def pytest_configure(config):
+def pytest_configure(config: pytest.Config) -> None:
     config.addinivalue_line(
         "markers",
         "pil_noop_mark: A conditional mark where nothing special happens",
diff --git a/Tests/createfontdatachunk.py b/Tests/createfontdatachunk.py
index e318eb732..41c76f87e 100755
--- a/Tests/createfontdatachunk.py
+++ b/Tests/createfontdatachunk.py
@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+from __future__ import annotations
+
 import base64
 import os
 
diff --git a/Tests/fonts/CBDTTestFont.ttf b/Tests/fonts/CBDTTestFont.ttf
new file mode 100644
index 000000000..73444e8dc
Binary files /dev/null and b/Tests/fonts/CBDTTestFont.ttf differ
diff --git a/Tests/fonts/DejaVuSans/LICENSE.txt b/Tests/fonts/DejaVuSans/LICENSE.txt
index 30516578f..be6a4d84c 100644
--- a/Tests/fonts/DejaVuSans/LICENSE.txt
+++ b/Tests/fonts/DejaVuSans/LICENSE.txt
@@ -37,4 +37,4 @@ The Font Software may be sold as part of a larger software package but no copy o
 
 THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL TAVMJONG BAH BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM OTHER DEALINGS IN THE FONT SOFTWARE.
 
-Except as contained in this notice, the name of Tavmjong Bah shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Font Software without prior written authorization from Tavmjong Bah. For further information, contact: tavmjong @ free . fr.
\ No newline at end of file
+Except as contained in this notice, the name of Tavmjong Bah shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Font Software without prior written authorization from Tavmjong Bah. For further information, contact: tavmjong @ free . fr.
diff --git a/Tests/fonts/EBDTTestFont.ttf b/Tests/fonts/EBDTTestFont.ttf
new file mode 100644
index 000000000..046e9e45c
Binary files /dev/null and b/Tests/fonts/EBDTTestFont.ttf differ
diff --git a/Tests/fonts/LICENSE.txt b/Tests/fonts/LICENSE.txt
index da559b3d3..3c8a23197 100644
--- a/Tests/fonts/LICENSE.txt
+++ b/Tests/fonts/LICENSE.txt
@@ -2,7 +2,6 @@
 NotoNastaliqUrdu-Regular.ttf and NotoSansSymbols-Regular.ttf, from https://github.com/googlei18n/noto-fonts
 NotoSans-Regular.ttf, from https://www.google.com/get/noto/
 NotoSansJP-Thin.otf, from https://www.google.com/get/noto/help/cjk/
-NotoColorEmoji.ttf, from https://github.com/googlefonts/noto-emoji
 AdobeVFPrototype.ttf, from https://github.com/adobe-fonts/adobe-variable-font-prototype
 TINY5x3GX.ttf, from http://velvetyne.fr/fonts/tiny
 ArefRuqaa-Regular.ttf, from https://github.com/google/fonts/tree/master/ofl/arefruqaa
@@ -25,3 +24,5 @@ FreeMono.ttf is licensed under GPLv3.
 10x20-ISO8859-1.pcf, from https://packages.ubuntu.com/xenial/xfonts-base
 
 "Public domain font.  Share and enjoy."
+
+CBDTTestFont.ttf and EBDTTestFont.ttf from https://github.com/nulano/font-tests are public domain.
diff --git a/Tests/fonts/NotoColorEmoji.ttf b/Tests/fonts/NotoColorEmoji.ttf
deleted file mode 100644
index ef7b72575..000000000
Binary files a/Tests/fonts/NotoColorEmoji.ttf and /dev/null differ
diff --git a/Tests/helper.py b/Tests/helper.py
index 69246bfcf..d6a93a803 100644
--- a/Tests/helper.py
+++ b/Tests/helper.py
@@ -2,57 +2,52 @@
 Helper functions.
 """
 
+from __future__ import annotations
+
 import logging
 import os
 import shutil
+import subprocess
 import sys
 import sysconfig
 import tempfile
+from collections.abc import Sequence
+from functools import lru_cache
 from io import BytesIO
+from typing import Any, Callable
 
 import pytest
 from packaging.version import parse as parse_version
 
-from PIL import Image, ImageMath, features
+from PIL import Image, ImageFile, ImageMath, features
 
 logger = logging.getLogger(__name__)
 
-
-HAS_UPLOADER = False
-
+uploader = None
 if os.environ.get("SHOW_ERRORS"):
-    # local img.show for errors.
-    HAS_UPLOADER = True
-
-    class test_image_results:
-        @staticmethod
-        def upload(a, b):
-            a.show()
-            b.show()
-
+    uploader = "show"
 elif "GITHUB_ACTIONS" in os.environ:
-    HAS_UPLOADER = True
-
-    class test_image_results:
-        @staticmethod
-        def upload(a, b):
-            dir_errors = os.path.join(os.path.dirname(__file__), "errors")
-            os.makedirs(dir_errors, exist_ok=True)
-            tmpdir = tempfile.mkdtemp(dir=dir_errors)
-            a.save(os.path.join(tmpdir, "a.png"))
-            b.save(os.path.join(tmpdir, "b.png"))
-            return tmpdir
-
-else:
-    try:
-        import test_image_results
-
-        HAS_UPLOADER = True
-    except ImportError:
-        pass
+    uploader = "github_actions"
 
 
-def convert_to_comparable(a, b):
+def upload(a: Image.Image, b: Image.Image) -> str | None:
+    if uploader == "show":
+        # local img.show for errors.
+        a.show()
+        b.show()
+    elif uploader == "github_actions":
+        dir_errors = os.path.join(os.path.dirname(__file__), "errors")
+        os.makedirs(dir_errors, exist_ok=True)
+        tmpdir = tempfile.mkdtemp(dir=dir_errors)
+        a.save(os.path.join(tmpdir, "a.png"))
+        b.save(os.path.join(tmpdir, "b.png"))
+        return tmpdir
+    return None
+
+
+def convert_to_comparable(
+    a: Image.Image, b: Image.Image
+) -> tuple[Image.Image, Image.Image]:
     new_a, new_b = a, b
     if a.mode == "P":
         new_a = Image.new("L", a.size)
@@ -65,14 +60,16 @@ def convert_to_comparable(a, b):
     return new_a, new_b
 
 
-def assert_deep_equal(a, b, msg=None):
+def assert_deep_equal(a: Any, b: Any, msg: str | None = None) -> None:
     try:
         assert len(a) == len(b), msg or f"got length {len(a)}, expected {len(b)}"
     except Exception:
         assert a == b, msg
 
 
-def assert_image(im, mode, size, msg=None):
+def assert_image(
+    im: Image.Image, mode: str, size: tuple[int, int], msg: str | None = None
+) -> None:
     if mode is not None:
         assert im.mode == mode, (
             msg or f"got mode {repr(im.mode)}, expected {repr(mode)}"
@@ -84,28 +81,32 @@ def assert_image(im, mode, size, msg=None):
         )
 
 
-def assert_image_equal(a, b, msg=None):
+def assert_image_equal(a: Image.Image, b: Image.Image, msg: str | None = None) -> None:
     assert a.mode == b.mode, msg or f"got mode {repr(a.mode)}, expected {repr(b.mode)}"
     assert a.size == b.size, msg or f"got size {repr(a.size)}, expected {repr(b.size)}"
     if a.tobytes() != b.tobytes():
-        if HAS_UPLOADER:
-            try:
-                url = test_image_results.upload(a, b)
-                logger.error(f"Url for test images: {url}")
-            except Exception:
-                pass
+        try:
+            url = upload(a, b)
+            if url:
+                logger.error("URL for test images: %s", url)
+        except Exception:
+            pass
 
-        assert False, msg or "got different content"
+        pytest.fail(msg or "got different content")
 
 
-def assert_image_equal_tofile(a, filename, msg=None, mode=None):
+def assert_image_equal_tofile(
+    a: Image.Image, filename: str, msg: str | None = None, mode: str | None = None
+) -> None:
     with Image.open(filename) as img:
         if mode:
             img = img.convert(mode)
         assert_image_equal(a, img, msg)
 
 
-def assert_image_similar(a, b, epsilon, msg=None):
+def assert_image_similar(
+    a: Image.Image, b: Image.Image, epsilon: float, msg: str | None = None
+) -> None:
     assert a.mode == b.mode, msg or f"got mode {repr(a.mode)}, expected {repr(b.mode)}"
     assert a.size == b.size, msg or f"got size {repr(a.size)}, expected {repr(b.size)}"
 
@@ -113,7 +114,9 @@ def assert_image_similar(a, b, epsilon, msg=None):
 
     diff = 0
     for ach, bch in zip(a.split(), b.split()):
-        chdiff = ImageMath.eval("abs(a - b)", a=ach, b=bch).convert("L")
+        chdiff = ImageMath.lambda_eval(
+            lambda args: abs(args["a"] - args["b"]), a=ach, b=bch
+        ).convert("L")
         diff += sum(i * num for i, num in enumerate(chdiff.histogram()))
 
     ave_diff = diff / (a.size[0] * a.size[1])
@@ -123,61 +126,76 @@ def assert_image_similar(a, b, epsilon, msg=None):
             + f" average pixel value difference {ave_diff:.4f} > epsilon {epsilon:.4f}"
         )
     except Exception as e:
-        if HAS_UPLOADER:
-            try:
-                url = test_image_results.upload(a, b)
-                logger.error(f"Url for test images: {url}")
-            except Exception:
-                pass
+        try:
+            url = upload(a, b)
+            if url:
+                logger.exception("URL for test images: %s", url)
+        except Exception:
+            pass
         raise e
 
 
-def assert_image_similar_tofile(a, filename, epsilon, msg=None, mode=None):
+def assert_image_similar_tofile(
+    a: Image.Image,
+    filename: str,
+    epsilon: float,
+    msg: str | None = None,
+    mode: str | None = None,
+) -> None:
     with Image.open(filename) as img:
         if mode:
             img = img.convert(mode)
         assert_image_similar(a, img, epsilon, msg)
 
 
-def assert_all_same(items, msg=None):
+def assert_all_same(items: Sequence[Any], msg: str | None = None) -> None:
     assert items.count(items[0]) == len(items), msg
 
 
-def assert_not_all_same(items, msg=None):
+def assert_not_all_same(items: Sequence[Any], msg: str | None = None) -> None:
     assert items.count(items[0]) != len(items), msg
 
 
-def assert_tuple_approx_equal(actuals, targets, threshold, msg):
+def assert_tuple_approx_equal(
+    actuals: Sequence[int], targets: tuple[int, ...], threshold: int, msg: str
+) -> None:
     """Tests if actuals has values within threshold from targets"""
-    value = True
     for i, target in enumerate(targets):
-        value *= target - threshold <= actuals[i] <= target + threshold
-
-    assert value, msg + ": " + repr(actuals) + " != " + repr(targets)
+        if not (target - threshold <= actuals[i] <= target + threshold):
+            pytest.fail(msg + ": " + repr(actuals) + " != " + repr(targets))
 
 
-def skip_unless_feature(feature):
+def skip_unless_feature(feature: str) -> pytest.MarkDecorator:
     reason = f"{feature} not available"
     return pytest.mark.skipif(not features.check(feature), reason=reason)
 
 
-def skip_unless_feature_version(feature, version_required, reason=None):
-    if not features.check(feature):
+def skip_unless_feature_version(
+    feature: str, required: str, reason: str | None = None
+) -> pytest.MarkDecorator:
+    version = features.version(feature)
+    if version is None:
         return pytest.mark.skip(f"{feature} not available")
     if reason is None:
-        reason = f"{feature} is older than {version_required}"
-    version_required = parse_version(version_required)
-    version_available = parse_version(features.version(feature))
+        reason = f"{feature} is older than {required}"
+    version_required = parse_version(required)
+    version_available = parse_version(version)
     return pytest.mark.skipif(version_available < version_required, reason=reason)
 
 
-def mark_if_feature_version(mark, feature, version_blacklist, reason=None):
-    if not features.check(feature):
+def mark_if_feature_version(
+    mark: pytest.MarkDecorator,
+    feature: str,
+    version_blacklist: str,
+    reason: str | None = None,
+) -> pytest.MarkDecorator:
+    version = features.version(feature)
+    if version is None:
         return pytest.mark.pil_noop_mark()
     if reason is None:
         reason = f"{feature} is {version_blacklist}"
     version_required = parse_version(version_blacklist)
-    version_available = parse_version(features.version(feature))
+    version_available = parse_version(version)
     if (
         version_available.major == version_required.major
         and version_available.minor == version_required.minor
@@ -192,7 +210,7 @@ class PillowLeakTestCase:
     iterations = 100  # count
     mem_limit = 512  # k
 
-    def _get_mem_usage(self):
+    def _get_mem_usage(self) -> float:
         """
         Gets the RUSAGE memory usage, returns in K. Encapsulates the difference
         between macOS and Linux rss reporting
@@ -203,18 +221,13 @@ class PillowLeakTestCase:
         from resource import RUSAGE_SELF, getrusage
 
         mem = getrusage(RUSAGE_SELF).ru_maxrss
-        if sys.platform == "darwin":
-            # man 2 getrusage:
-            #     ru_maxrss
-            # This is the maximum resident set size utilized (in bytes).
-            return mem / 1024  # Kb
-        # linux
-        # man 2 getrusage
-        #        ru_maxrss (since Linux 2.6.32)
-        #  This is the maximum resident set size used (in kilobytes).
-        return mem  # Kb
+        # man 2 getrusage:
+        #     ru_maxrss
+        # This is the maximum resident set size utilized
+        # in bytes on macOS, in kilobytes on Linux
+        return mem / 1024 if sys.platform == "darwin" else mem
 
-    def _test_leak(self, core):
+    def _test_leak(self, core: Callable[[], None]) -> None:
         start_mem = self._get_mem_usage()
         for cycle in range(self.iterations):
             core()
@@ -226,50 +239,75 @@ class PillowLeakTestCase:
 # helpers
 
 
-def fromstring(data):
+def fromstring(data: bytes) -> ImageFile.ImageFile:
     return Image.open(BytesIO(data))
 
 
-def tostring(im, string_format, **options):
+def tostring(im: Image.Image, string_format: str, **options: Any) -> bytes:
     out = BytesIO()
     im.save(out, string_format, **options)
     return out.getvalue()
 
 
-def hopper(mode=None, cache={}):
+def hopper(mode: str | None = None) -> Image.Image:
+    # Use caching to reduce reading from disk, but return a copy
+    # so that the cached image isn't modified by the tests
+    # (for fast, isolated, repeatable tests).
+
     if mode is None:
         # Always return fresh not-yet-loaded version of image.
-        # Operations on not-yet-loaded images is separate class of errors
-        # what we should catch.
+        # Operations on not-yet-loaded images are a separate class of errors
+        # that we should catch.
         return Image.open("Tests/images/hopper.ppm")
-    # Use caching to reduce reading from disk but so an original copy is
-    # returned each time and the cached image isn't modified by tests
-    # (for fast, isolated, repeatable tests).
-    im = cache.get(mode)
-    if im is None:
-        if mode == "F":
-            im = hopper("L").convert(mode)
-        elif mode[:4] == "I;16":
-            im = hopper("I").convert(mode)
-        else:
-            im = hopper().convert(mode)
-        cache[mode] = im
-    return im.copy()
+
+    return _cached_hopper(mode).copy()
 
 
-def djpeg_available():
-    return bool(shutil.which("djpeg"))
+@lru_cache
+def _cached_hopper(mode: str) -> Image.Image:
+    if mode == "F":
+        im = hopper("L")
+    else:
+        im = hopper()
+    if mode.startswith("BGR;"):
+        with pytest.warns(DeprecationWarning):
+            im = im.convert(mode)
+    else:
+        try:
+            im = im.convert(mode)
+        except ImportError:
+            if mode == "LAB":
+                im = Image.open("Tests/images/hopper.Lab.tif")
+            else:
+                raise
+    return im
 
 
-def cjpeg_available():
-    return bool(shutil.which("cjpeg"))
+def djpeg_available() -> bool:
+    if shutil.which("djpeg"):
+        try:
+            subprocess.check_call(["djpeg", "-version"])
+            return True
+        except subprocess.CalledProcessError:  # pragma: no cover
+            return False
+    return False
 
 
-def netpbm_available():
+def cjpeg_available() -> bool:
+    if shutil.which("cjpeg"):
+        try:
+            subprocess.check_call(["cjpeg", "-version"])
+            return True
+        except subprocess.CalledProcessError:  # pragma: no cover
+            return False
+    return False
+
+
+def netpbm_available() -> bool:
     return bool(shutil.which("ppmquant") and shutil.which("ppmtogif"))
 
 
-def magick_command():
+def magick_command() -> list[str] | None:
     if sys.platform == "win32":
         magickhome = os.environ.get("MAGICK_HOME")
         if magickhome:
@@ -286,47 +324,48 @@ def magick_command():
         return imagemagick
     if graphicsmagick and shutil.which(graphicsmagick[0]):
         return graphicsmagick
+    return None
 
 
-def on_appveyor():
+def on_appveyor() -> bool:
     return "APPVEYOR" in os.environ
 
 
-def on_github_actions():
+def on_github_actions() -> bool:
     return "GITHUB_ACTIONS" in os.environ
 
 
-def on_ci():
+def on_ci() -> bool:
     # GitHub Actions and AppVeyor have "CI"
     return "CI" in os.environ
 
 
-def is_big_endian():
+def is_big_endian() -> bool:
     return sys.byteorder == "big"
 
 
-def is_ppc64le():
+def is_ppc64le() -> bool:
     import platform
 
     return platform.machine() == "ppc64le"
 
 
-def is_win32():
+def is_win32() -> bool:
     return sys.platform.startswith("win32")
 
 
-def is_pypy():
+def is_pypy() -> bool:
     return hasattr(sys, "pypy_translation_info")
 
 
-def is_mingw():
+def is_mingw() -> bool:
     return sysconfig.get_platform() == "mingw"
 
 
 class CachedProperty:
-    def __init__(self, func):
+    def __init__(self, func: Callable[[Any], Any]) -> None:
         self.func = func
 
-    def __get__(self, instance, cls=None):
+    def __get__(self, instance: Any, cls: type[Any] | None = None) -> Any:
         result = instance.__dict__[self.func.__name__] = self.func(instance)
         return result
diff --git a/Tests/icc/LICENSE.txt b/Tests/icc/LICENSE.txt
index 7d289c331..7119461ed 100644
--- a/Tests/icc/LICENSE.txt
+++ b/Tests/icc/LICENSE.txt
@@ -22,4 +22,3 @@ and that the name of ICC shall not be used in advertising or publicity
 pertaining to distribution of the software without specific, written
 prior permission. ICC makes no representations about the suitability
 of this software for any purpose.
-
diff --git a/Tests/icc/sGrey-v2-nano.icc b/Tests/icc/sGrey-v2-nano.icc
new file mode 100644
index 000000000..0e9edfd40
Binary files /dev/null and b/Tests/icc/sGrey-v2-nano.icc differ
diff --git a/Tests/images/16_bit_binary_pgm.png b/Tests/images/16_bit_binary_pgm.png
deleted file mode 100644
index 918be1ad4..000000000
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diff --git a/Tests/images/16_bit_binary_pgm.tiff b/Tests/images/16_bit_binary_pgm.tiff
new file mode 100644
index 000000000..1ce808bcf
Binary files /dev/null and b/Tests/images/16_bit_binary_pgm.tiff differ
diff --git a/Tests/images/2422.flc b/Tests/images/2422.flc
new file mode 100644
index 000000000..eed5fb59e
Binary files /dev/null and b/Tests/images/2422.flc differ
diff --git a/Tests/images/9bit.j2k b/Tests/images/9bit.j2k
new file mode 100644
index 000000000..174f565fc
Binary files /dev/null and b/Tests/images/9bit.j2k differ
diff --git a/Tests/images/apng/different_durations.png b/Tests/images/apng/different_durations.png
new file mode 100644
index 000000000..984254b8e
Binary files /dev/null and b/Tests/images/apng/different_durations.png differ
diff --git a/Tests/images/apng/mode_greyscale.png b/Tests/images/apng/mode_grayscale.png
similarity index 100%
rename from Tests/images/apng/mode_greyscale.png
rename to Tests/images/apng/mode_grayscale.png
diff --git a/Tests/images/apng/mode_greyscale_alpha.png b/Tests/images/apng/mode_grayscale_alpha.png
similarity index 100%
rename from Tests/images/apng/mode_greyscale_alpha.png
rename to Tests/images/apng/mode_grayscale_alpha.png
diff --git a/Tests/images/background_outside_palette.gif b/Tests/images/background_outside_palette.gif
new file mode 100644
index 000000000..63e767463
Binary files /dev/null and b/Tests/images/background_outside_palette.gif differ
diff --git a/Tests/images/bc1.dds b/Tests/images/bc1.dds
new file mode 100755
index 000000000..faec63a00
Binary files /dev/null and b/Tests/images/bc1.dds differ
diff --git a/Tests/images/bc1_typeless.dds b/Tests/images/bc1_typeless.dds
new file mode 100755
index 000000000..47a85e2d0
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diff --git a/Tests/images/bc4_typeless.dds b/Tests/images/bc4_typeless.dds
new file mode 100644
index 000000000..27f87889f
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diff --git a/Tests/images/bc4_unorm.dds b/Tests/images/bc4_unorm.dds
new file mode 100644
index 000000000..13da711bd
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diff --git a/Tests/images/bc4_unorm.png b/Tests/images/bc4_unorm.png
new file mode 100644
index 000000000..71d536c84
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diff --git a/Tests/images/bc4u.dds b/Tests/images/bc4u.dds
new file mode 100644
index 000000000..7f9f050b6
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diff --git a/Tests/images/bc5s.png b/Tests/images/bc5s.png
index 39d7811bf..5e7a1b95e 100644
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diff --git a/Tests/images/bc5u.dds b/Tests/images/bc5u.dds
new file mode 100644
index 000000000..4e4773cd7
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diff --git a/Tests/images/bgr15.dds b/Tests/images/bgr15.dds
new file mode 100644
index 000000000..ba3bbddca
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diff --git a/Tests/images/bgr15.png b/Tests/images/bgr15.png
new file mode 100644
index 000000000..a15ab5ad2
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diff --git a/Tests/images/bitmap_font_blend.png b/Tests/images/bitmap_font_blend.png
new file mode 100644
index 000000000..a5acf3667
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diff --git a/Tests/images/bitmap_font_stroke_basic.png b/Tests/images/bitmap_font_stroke_basic.png
index 86b2d09f6..26aa3ab8e 100644
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diff --git a/Tests/images/bitmap_font_stroke_raqm.png b/Tests/images/bitmap_font_stroke_raqm.png
index 08029ce34..be273d7cb 100644
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diff --git a/Tests/images/bmp/q/rgb32h52.bmp b/Tests/images/bmp/q/rgb32h52.bmp
new file mode 100644
index 000000000..db6e4538e
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diff --git a/Tests/images/bmp/q/rgba32h56.bmp b/Tests/images/bmp/q/rgba32h56.bmp
new file mode 100644
index 000000000..343baa330
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diff --git a/Tests/images/cbdt.png b/Tests/images/cbdt.png
new file mode 100644
index 000000000..542bb812e
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diff --git a/Tests/images/cbdt_mask.png b/Tests/images/cbdt_mask.png
new file mode 100644
index 000000000..b0854a605
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diff --git a/Tests/images/cbdt_notocoloremoji.png b/Tests/images/cbdt_notocoloremoji.png
deleted file mode 100644
index 1da12fba1..000000000
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diff --git a/Tests/images/cbdt_notocoloremoji_mask.png b/Tests/images/cbdt_notocoloremoji_mask.png
deleted file mode 100644
index 6d036a0b6..000000000
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diff --git a/Tests/images/cmx3g8_wv_1998.260_0745_mcidas.png b/Tests/images/cmx3g8_wv_1998.260_0745_mcidas.png
deleted file mode 100644
index 2b84283b7..000000000
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diff --git a/Tests/images/cmx3g8_wv_1998.260_0745_mcidas.tiff b/Tests/images/cmx3g8_wv_1998.260_0745_mcidas.tiff
new file mode 100644
index 000000000..b72509cc4
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diff --git a/Tests/images/default_font_freetype.png b/Tests/images/default_font_freetype.png
new file mode 100644
index 000000000..bc1654a25
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diff --git a/Tests/images/eps/1.bmp b/Tests/images/eps/1.bmp
new file mode 100644
index 000000000..194c85784
Binary files /dev/null and b/Tests/images/eps/1.bmp differ
diff --git a/Tests/images/1.eps b/Tests/images/eps/1.eps
similarity index 100%
rename from Tests/images/1.eps
rename to Tests/images/eps/1.eps
diff --git a/Tests/images/eps/1_boundingbox_after_imagedata.eps b/Tests/images/eps/1_boundingbox_after_imagedata.eps
new file mode 100644
index 000000000..08f8c4681
Binary files /dev/null and b/Tests/images/eps/1_boundingbox_after_imagedata.eps differ
diff --git a/Tests/images/eps/1_second_imagedata.eps b/Tests/images/eps/1_second_imagedata.eps
new file mode 100644
index 000000000..e6309a3b4
Binary files /dev/null and b/Tests/images/eps/1_second_imagedata.eps differ
diff --git a/Tests/images/binary_preview_map.eps b/Tests/images/eps/binary_preview_map.eps
similarity index 100%
rename from Tests/images/binary_preview_map.eps
rename to Tests/images/eps/binary_preview_map.eps
diff --git a/Tests/images/create_eps.gnuplot b/Tests/images/eps/create_eps.gnuplot
similarity index 98%
rename from Tests/images/create_eps.gnuplot
rename to Tests/images/eps/create_eps.gnuplot
index 4d7e29877..57a3c8c97 100644
--- a/Tests/images/create_eps.gnuplot
+++ b/Tests/images/eps/create_eps.gnuplot
@@ -1,5 +1,3 @@
-#!/usr/bin/gnuplot
-
 #This is the script that was used to create our sample EPS files
 #We used the following version of the gnuplot program
 #G N U P L O T
diff --git a/Tests/images/illu10_no_preview.eps b/Tests/images/eps/illu10_no_preview.eps
similarity index 100%
rename from Tests/images/illu10_no_preview.eps
rename to Tests/images/eps/illu10_no_preview.eps
diff --git a/Tests/images/illu10_preview.eps b/Tests/images/eps/illu10_preview.eps
similarity index 100%
rename from Tests/images/illu10_preview.eps
rename to Tests/images/eps/illu10_preview.eps
diff --git a/Tests/images/illuCS6_no_preview.eps b/Tests/images/eps/illuCS6_no_preview.eps
similarity index 100%
rename from Tests/images/illuCS6_no_preview.eps
rename to Tests/images/eps/illuCS6_no_preview.eps
diff --git a/Tests/images/illuCS6_preview.eps b/Tests/images/eps/illuCS6_preview.eps
similarity index 100%
rename from Tests/images/illuCS6_preview.eps
rename to Tests/images/eps/illuCS6_preview.eps
diff --git a/Tests/images/non_zero_bb.eps b/Tests/images/eps/non_zero_bb.eps
similarity index 100%
rename from Tests/images/non_zero_bb.eps
rename to Tests/images/eps/non_zero_bb.eps
diff --git a/Tests/images/non_zero_bb.png b/Tests/images/eps/non_zero_bb.png
similarity index 100%
rename from Tests/images/non_zero_bb.png
rename to Tests/images/eps/non_zero_bb.png
diff --git a/Tests/images/non_zero_bb_scale2.png b/Tests/images/eps/non_zero_bb_scale2.png
similarity index 100%
rename from Tests/images/non_zero_bb_scale2.png
rename to Tests/images/eps/non_zero_bb_scale2.png
diff --git a/Tests/images/pil_sample_cmyk.eps b/Tests/images/eps/pil_sample_cmyk.eps
similarity index 100%
rename from Tests/images/pil_sample_cmyk.eps
rename to Tests/images/eps/pil_sample_cmyk.eps
diff --git a/Tests/images/reqd_showpage.eps b/Tests/images/eps/reqd_showpage.eps
similarity index 100%
rename from Tests/images/reqd_showpage.eps
rename to Tests/images/eps/reqd_showpage.eps
diff --git a/Tests/images/reqd_showpage.png b/Tests/images/eps/reqd_showpage.png
similarity index 100%
rename from Tests/images/reqd_showpage.png
rename to Tests/images/eps/reqd_showpage.png
diff --git a/Tests/images/reqd_showpage_transparency.png b/Tests/images/eps/reqd_showpage_transparency.png
similarity index 100%
rename from Tests/images/reqd_showpage_transparency.png
rename to Tests/images/eps/reqd_showpage_transparency.png
diff --git a/Tests/images/timeout-d675703545fee17acab56e5fec644c19979175de.eps b/Tests/images/eps/timeout-d675703545fee17acab56e5fec644c19979175de.eps
similarity index 100%
rename from Tests/images/timeout-d675703545fee17acab56e5fec644c19979175de.eps
rename to Tests/images/eps/timeout-d675703545fee17acab56e5fec644c19979175de.eps
diff --git a/Tests/images/zero_bb.eps b/Tests/images/eps/zero_bb.eps
similarity index 100%
rename from Tests/images/zero_bb.eps
rename to Tests/images/eps/zero_bb.eps
diff --git a/Tests/images/zero_bb.png b/Tests/images/eps/zero_bb.png
similarity index 100%
rename from Tests/images/zero_bb.png
rename to Tests/images/eps/zero_bb.png
diff --git a/Tests/images/zero_bb_emptyline.eps b/Tests/images/eps/zero_bb_emptyline.eps
similarity index 100%
rename from Tests/images/zero_bb_emptyline.eps
rename to Tests/images/eps/zero_bb_emptyline.eps
diff --git a/Tests/images/eps/zero_bb_eof_before_boundingbox.eps b/Tests/images/eps/zero_bb_eof_before_boundingbox.eps
new file mode 100644
index 000000000..c268bffd1
Binary files /dev/null and b/Tests/images/eps/zero_bb_eof_before_boundingbox.eps differ
diff --git a/Tests/images/zero_bb_scale2.png b/Tests/images/eps/zero_bb_scale2.png
similarity index 100%
rename from Tests/images/zero_bb_scale2.png
rename to Tests/images/eps/zero_bb_scale2.png
diff --git a/Tests/images/eps/zero_bb_trailer.eps b/Tests/images/eps/zero_bb_trailer.eps
new file mode 100644
index 000000000..964889965
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The data are formatted                 COMMENT as a simple two-dimensional FITS image with the same units as           COMMENT the orginal survey.                                                     CTYPE1  = 'RA---TAN'           / X-axis type                                    CTYPE2  = 'DEC--TAN'           / Y-axis type                                    CRVAL1  =             250.4226 / Reference pixel value                          CRVAL2  =              36.4602 / Reference pixel value                          CRPIX1  =              150.500 / Reference pixel                                CRPIX2  =              150.500 / Reference pixel                                CDELT1  =       -0.00027770002 / Degrees/pixel                                  CDELT2  =        0.00027770002 / Degrees/pixel                                  CROTA1  =              0.00000 / Rotation in degrees.                           EQUINOX =              2000.00 /Equinox of coordinates                          ZHECKSUM= '2f4R3c4O2c4O2c4O'   / HDU checksum updated 2006-11-15T17:18:55       ZDATASUM= '1803906202'         / data unit checksum updated 2006-11-15T17:18:55 CHECKSUM= 'CeA6FZ03Cd73CZ73'   / HDU checksum updated 2006-11-15T17:28:30       DATASUM = '3567348586'         / data unit checksum updated 2006-11-15T17:28:30 END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
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\ No newline at end of file
diff --git a/Tests/images/multiple_exif.jpg b/Tests/images/multiple_exif.jpg
new file mode 100644
index 000000000..f9f343507
Binary files /dev/null and b/Tests/images/multiple_exif.jpg differ
diff --git a/Tests/images/negative_size.ppm b/Tests/images/negative_size.ppm
old mode 100755
new mode 100644
diff --git a/Tests/images/negative_top_left_layer.psd b/Tests/images/negative_top_left_layer.psd
new file mode 100644
index 000000000..be9d9d6d0
Binary files /dev/null and b/Tests/images/negative_top_left_layer.psd differ
diff --git a/Tests/images/p_16.png b/Tests/images/p_16.png
index e35886412..458f7138e 100644
Binary files a/Tests/images/p_16.png and b/Tests/images/p_16.png differ
diff --git a/Tests/images/p_8.tga b/Tests/images/p_8.tga
new file mode 100644
index 000000000..73759a282
Binary files /dev/null and b/Tests/images/p_8.tga differ
diff --git a/Tests/images/palette.dds b/Tests/images/palette.dds
new file mode 100644
index 000000000..7171cb1f2
Binary files /dev/null and b/Tests/images/palette.dds differ
diff --git a/Tests/images/rgba16.tga b/Tests/images/rgba16.tga
new file mode 100644
index 000000000..3918647a2
Binary files /dev/null and b/Tests/images/rgba16.tga differ
diff --git a/Tests/images/seek_too_large.tif b/Tests/images/seek_too_large.tif
new file mode 100644
index 000000000..094c3057c
Binary files /dev/null and b/Tests/images/seek_too_large.tif differ
diff --git a/Tests/images/sugarshack_frame_size.mpo b/Tests/images/sugarshack_frame_size.mpo
index 009280a79..abff98ea5 100644
Binary files a/Tests/images/sugarshack_frame_size.mpo and b/Tests/images/sugarshack_frame_size.mpo differ
diff --git a/Tests/images/test_combine_caron_below_ttb.png b/Tests/images/test_combine_caron_below_ttb.png
index 5c7576de0..2b7cc89ea 100644
Binary files a/Tests/images/test_combine_caron_below_ttb.png and b/Tests/images/test_combine_caron_below_ttb.png differ
diff --git a/Tests/images/test_combine_caron_below_ttb_lb.png b/Tests/images/test_combine_caron_below_ttb_lb.png
index bacd6a141..3ced2dbfc 100644
Binary files a/Tests/images/test_combine_caron_below_ttb_lb.png and b/Tests/images/test_combine_caron_below_ttb_lb.png differ
diff --git a/Tests/images/test_combine_caron_ttb.png b/Tests/images/test_combine_caron_ttb.png
index a94be2f0a..569cc1ec3 100644
Binary files a/Tests/images/test_combine_caron_ttb.png and b/Tests/images/test_combine_caron_ttb.png differ
diff --git a/Tests/images/test_combine_caron_ttb_lt.png b/Tests/images/test_combine_caron_ttb_lt.png
index a94be2f0a..569cc1ec3 100644
Binary files a/Tests/images/test_combine_caron_ttb_lt.png and b/Tests/images/test_combine_caron_ttb_lt.png differ
diff --git a/Tests/images/test_extents_transparency.gif b/Tests/images/test_extents_transparency.gif
new file mode 100644
index 000000000..739c82ad4
Binary files /dev/null and b/Tests/images/test_extents_transparency.gif differ
diff --git a/Tests/images/truncated_end_chunk.png b/Tests/images/truncated_end_chunk.png
new file mode 100644
index 000000000..5e88c5e4f
Binary files /dev/null and b/Tests/images/truncated_end_chunk.png differ
diff --git a/Tests/images/truncated_exif_dpi.jpg b/Tests/images/truncated_exif_dpi.jpg
new file mode 100644
index 000000000..b41ab4004
Binary files /dev/null and b/Tests/images/truncated_exif_dpi.jpg differ
diff --git a/Tests/images/ultrahdr.jpg b/Tests/images/ultrahdr.jpg
new file mode 100644
index 000000000..34f615b61
Binary files /dev/null and b/Tests/images/ultrahdr.jpg differ
diff --git a/Tests/images/unimplemented_pixel_format.dds b/Tests/images/unimplemented_pfflags.dds
similarity index 99%
rename from Tests/images/unimplemented_pixel_format.dds
rename to Tests/images/unimplemented_pfflags.dds
index 41a343886..e3fc8344d 100755
Binary files a/Tests/images/unimplemented_pixel_format.dds and b/Tests/images/unimplemented_pfflags.dds differ
diff --git a/Tests/images/unknown_compression_method.png b/Tests/images/unknown_compression_method.png
new file mode 100644
index 000000000..e1614a731
Binary files /dev/null and b/Tests/images/unknown_compression_method.png differ
diff --git a/Tests/images/unknown_mode.j2k b/Tests/images/unknown_mode.j2k
new file mode 100644
index 000000000..38719fe25
Binary files /dev/null and b/Tests/images/unknown_mode.j2k differ
diff --git a/Tests/images/unsupported_bitcount.dds b/Tests/images/unsupported_bitcount.dds
new file mode 100644
index 000000000..f9bb82254
Binary files /dev/null and b/Tests/images/unsupported_bitcount.dds differ
diff --git a/Tests/images/xmp_no_prefix.jpg b/Tests/images/xmp_no_prefix.jpg
new file mode 100644
index 000000000..bcd78c7ed
Binary files /dev/null and b/Tests/images/xmp_no_prefix.jpg differ
diff --git a/Tests/images/xmp_padded.jpg b/Tests/images/xmp_padded.jpg
new file mode 100644
index 000000000..9ecfb3efe
Binary files /dev/null and b/Tests/images/xmp_padded.jpg differ
diff --git a/Tests/images/zero_width.gif b/Tests/images/zero_width.gif
new file mode 100644
index 000000000..da6823b60
Binary files /dev/null and b/Tests/images/zero_width.gif differ
diff --git a/Tests/oss-fuzz/build.sh b/Tests/oss-fuzz/build.sh
index 7e9098f53..3aa6c7f6a 100755
--- a/Tests/oss-fuzz/build.sh
+++ b/Tests/oss-fuzz/build.sh
@@ -15,12 +15,12 @@
 #
 ################################################################################
 
-python3 setup.py build --build-base=/tmp/build install
+python3 -m pip install .
 
 # Build fuzzers in $OUT.
 for fuzzer in $(find $SRC -name 'fuzz_*.py'); do
   compile_python_fuzzer $fuzzer \
-      --add-binary /usr/local/lib/libjpeg.so.62.3.0:. \
+      --add-binary /usr/local/lib/libjpeg.so.62.4.0:. \
       --add-binary /usr/local/lib/libfreetype.so.6:. \
       --add-binary /usr/local/lib/liblcms2.so.2:. \
       --add-binary /usr/local/lib/libopenjp2.so.7:. \
diff --git a/Tests/oss-fuzz/fuzz_font.py b/Tests/oss-fuzz/fuzz_font.py
index bc2ba9a7e..f4e40ea36 100755
--- a/Tests/oss-fuzz/fuzz_font.py
+++ b/Tests/oss-fuzz/fuzz_font.py
@@ -16,14 +16,15 @@
 
 
 import atheris
+from atheris.import_hook import instrument_imports
 
-with atheris.instrument_imports():
+with instrument_imports():
     import sys
 
     import fuzzers
 
 
-def TestOneInput(data):
+def TestOneInput(data: bytes) -> None:
     try:
         fuzzers.fuzz_font(data)
     except Exception:
@@ -32,7 +33,7 @@ def TestOneInput(data):
         pass
 
 
-def main():
+def main() -> None:
     fuzzers.enable_decompressionbomb_error()
     atheris.Setup(sys.argv, TestOneInput)
     atheris.Fuzz()
diff --git a/Tests/oss-fuzz/fuzz_pillow.py b/Tests/oss-fuzz/fuzz_pillow.py
index 545daccb6..d58a6f015 100644
--- a/Tests/oss-fuzz/fuzz_pillow.py
+++ b/Tests/oss-fuzz/fuzz_pillow.py
@@ -1,5 +1,3 @@
-#!/usr/bin/python3
-
 # Copyright 2020 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -16,14 +14,15 @@
 
 
 import atheris
+from atheris.import_hook import instrument_imports
 
-with atheris.instrument_imports():
+with instrument_imports():
     import sys
 
     import fuzzers
 
 
-def TestOneInput(data):
+def TestOneInput(data: bytes) -> None:
     try:
         fuzzers.fuzz_image(data)
     except Exception:
@@ -32,7 +31,7 @@ def TestOneInput(data):
         pass
 
 
-def main():
+def main() -> None:
     fuzzers.enable_decompressionbomb_error()
     atheris.Setup(sys.argv, TestOneInput)
     atheris.Fuzz()
diff --git a/Tests/oss-fuzz/fuzzers.py b/Tests/oss-fuzz/fuzzers.py
index 10a172b46..d6c1fab71 100644
--- a/Tests/oss-fuzz/fuzzers.py
+++ b/Tests/oss-fuzz/fuzzers.py
@@ -1,21 +1,23 @@
+from __future__ import annotations
+
 import io
 import warnings
 
 from PIL import Image, ImageDraw, ImageFile, ImageFilter, ImageFont
 
 
-def enable_decompressionbomb_error():
+def enable_decompressionbomb_error() -> None:
     ImageFile.LOAD_TRUNCATED_IMAGES = True
     warnings.filterwarnings("ignore")
     warnings.simplefilter("error", Image.DecompressionBombWarning)
 
 
-def disable_decompressionbomb_error():
+def disable_decompressionbomb_error() -> None:
     ImageFile.LOAD_TRUNCATED_IMAGES = False
     warnings.resetwarnings()
 
 
-def fuzz_image(data):
+def fuzz_image(data: bytes) -> None:
     # This will fail on some images in the corpus, as we have many
     # invalid images in the test suite.
     with Image.open(io.BytesIO(data)) as im:
@@ -24,7 +26,7 @@ def fuzz_image(data):
         im.save(io.BytesIO(), "BMP")
 
 
-def fuzz_font(data):
+def fuzz_font(data: bytes) -> None:
     wrapper = io.BytesIO(data)
     try:
         font = ImageFont.truetype(wrapper)
diff --git a/Tests/oss-fuzz/python.supp b/Tests/oss-fuzz/python.supp
index 94cc87db9..36385d672 100644
--- a/Tests/oss-fuzz/python.supp
+++ b/Tests/oss-fuzz/python.supp
@@ -1,5 +1,5 @@
 {
-   <py3_8_encode_current_locale>
+   <py3_10_encode_current_locale>
    Memcheck:Cond
    ...
    fun:encode_current_locale
diff --git a/Tests/oss-fuzz/test_fuzzers.py b/Tests/oss-fuzz/test_fuzzers.py
index dc111c38b..90eb8713a 100644
--- a/Tests/oss-fuzz/test_fuzzers.py
+++ b/Tests/oss-fuzz/test_fuzzers.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import subprocess
 import sys
 
@@ -5,12 +7,14 @@ import fuzzers
 import packaging
 import pytest
 
-from PIL import Image, features
+from PIL import Image, UnidentifiedImageError, features
+from Tests.helper import skip_unless_feature
 
 if sys.platform.startswith("win32"):
     pytest.skip("Fuzzer is linux only", allow_module_level=True)
-if features.check("libjpeg_turbo"):
-    version = packaging.version.parse(features.version("libjpeg_turbo"))
+libjpeg_turbo_version = features.version("libjpeg_turbo")
+if libjpeg_turbo_version is not None:
+    version = packaging.version.parse(libjpeg_turbo_version)
     if version.major == 2 and version.minor == 0:
         pytestmark = pytest.mark.valgrind_known_error(
             reason="Known failing with libjpeg_turbo 2.0"
@@ -21,7 +25,7 @@ if features.check("libjpeg_turbo"):
     "path",
     subprocess.check_output("find Tests/images -type f", shell=True).split(b"\n"),
 )
-def test_fuzz_images(path):
+def test_fuzz_images(path: str) -> None:
     fuzzers.enable_decompressionbomb_error()
     try:
         with open(path, "rb") as f:
@@ -40,7 +44,7 @@ def test_fuzz_images(path):
     except (
         Image.DecompressionBombError,
         Image.DecompressionBombWarning,
-        Image.UnidentifiedImageError,
+        UnidentifiedImageError,
     ):
         # Known Image.* exceptions
         assert True
@@ -48,10 +52,11 @@ def test_fuzz_images(path):
         fuzzers.disable_decompressionbomb_error()
 
 
+@skip_unless_feature("freetype2")
 @pytest.mark.parametrize(
     "path", subprocess.check_output("find Tests/fonts -type f", shell=True).split(b"\n")
 )
-def test_fuzz_fonts(path):
+def test_fuzz_fonts(path: str) -> None:
     if not path:
         return
     with open(path, "rb") as f:
diff --git a/Tests/test_000_sanity.py b/Tests/test_000_sanity.py
index 3fd982474..c3926250f 100644
--- a/Tests/test_000_sanity.py
+++ b/Tests/test_000_sanity.py
@@ -1,7 +1,9 @@
+from __future__ import annotations
+
 from PIL import Image
 
 
-def test_sanity():
+def test_sanity() -> None:
     # Make sure we have the binary extension
     Image.core.new("L", (100, 100))
 
diff --git a/Tests/test_binary.py b/Tests/test_binary.py
index 4882e65e6..d19799a09 100644
--- a/Tests/test_binary.py
+++ b/Tests/test_binary.py
@@ -1,12 +1,14 @@
+from __future__ import annotations
+
 from PIL import _binary
 
 
-def test_standard():
+def test_standard() -> None:
     assert _binary.i8(b"*") == 42
     assert _binary.o8(42) == b"*"
 
 
-def test_little_endian():
+def test_little_endian() -> None:
     assert _binary.i16le(b"\xff\xff\x00\x00") == 65535
     assert _binary.i32le(b"\xff\xff\x00\x00") == 65535
 
@@ -14,7 +16,7 @@ def test_little_endian():
     assert _binary.o32le(65535) == b"\xff\xff\x00\x00"
 
 
-def test_big_endian():
+def test_big_endian() -> None:
     assert _binary.i16be(b"\x00\x00\xff\xff") == 0
     assert _binary.i32be(b"\x00\x00\xff\xff") == 65535
 
diff --git a/Tests/test_bmp_reference.py b/Tests/test_bmp_reference.py
index 002a44a4f..82cab39c6 100644
--- a/Tests/test_bmp_reference.py
+++ b/Tests/test_bmp_reference.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import os
 import warnings
 
@@ -8,18 +10,20 @@ from .helper import assert_image_similar
 base = os.path.join("Tests", "images", "bmp")
 
 
-def get_files(d, ext=".bmp"):
+def get_files(d: str, ext: str = ".bmp") -> list[str]:
     return [
         os.path.join(base, d, f) for f in os.listdir(os.path.join(base, d)) if ext in f
     ]
 
 
-def test_bad():
+def test_bad() -> None:
     """These shouldn't crash/dos, but they shouldn't return anything
     either"""
     for f in get_files("b"):
         # Assert that there is no unclosed file warning
         with warnings.catch_warnings():
+            warnings.simplefilter("error")
+
             try:
                 with Image.open(f) as im:
                     im.load()
@@ -27,7 +31,7 @@ def test_bad():
                 pass
 
 
-def test_questionable():
+def test_questionable() -> None:
     """These shouldn't crash/dos, but it's not well defined that these
     are in spec"""
     supported = [
@@ -42,6 +46,9 @@ def test_questionable():
         "pal8os2sp.bmp",
         "pal8rletrns.bmp",
         "rgb32bf-xbgr.bmp",
+        "rgba32.bmp",
+        "rgb32h52.bmp",
+        "rgba32h56.bmp",
     ]
     for f in get_files("q"):
         try:
@@ -54,7 +61,7 @@ def test_questionable():
                 raise
 
 
-def test_good():
+def test_good() -> None:
     """These should all work. There's a set of target files in the
     html directory that we can compare against."""
 
@@ -78,7 +85,7 @@ def test_good():
         "rgb32bf.bmp": "rgb24.png",
     }
 
-    def get_compare(f):
+    def get_compare(f: str) -> str:
         name = os.path.split(f)[1]
         if name in file_map:
             return os.path.join(base, "html", file_map[name])
diff --git a/Tests/test_box_blur.py b/Tests/test_box_blur.py
index 3bdd5177d..cb267b204 100644
--- a/Tests/test_box_blur.py
+++ b/Tests/test_box_blur.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, ImageFilter
@@ -14,18 +16,18 @@ sample.putdata(sum([
 # fmt: on
 
 
-def test_imageops_box_blur():
+def test_imageops_box_blur() -> None:
     i = sample.filter(ImageFilter.BoxBlur(1))
     assert i.mode == sample.mode
     assert i.size == sample.size
     assert isinstance(i, Image.Image)
 
 
-def box_blur(image, radius=1, n=1):
-    return image._new(image.im.box_blur(radius, n))
+def box_blur(image: Image.Image, radius: float = 1, n: int = 1) -> Image.Image:
+    return image._new(image.im.box_blur((radius, radius), n))
 
 
-def assert_image(im, data, delta=0):
+def assert_image(im: Image.Image, data: list[list[int]], delta: int = 0) -> None:
     it = iter(im.getdata())
     for data_row in data:
         im_row = [next(it) for _ in range(im.size[0])]
@@ -35,7 +37,13 @@ def assert_image(im, data, delta=0):
         next(it)
 
 
-def assert_blur(im, radius, data, passes=1, delta=0):
+def assert_blur(
+    im: Image.Image,
+    radius: float,
+    data: list[list[int]],
+    passes: int = 1,
+    delta: int = 0,
+) -> None:
     # check grayscale image
     assert_image(box_blur(im, radius, passes), data, delta)
     rgba = Image.merge("RGBA", (im, im, im, im))
@@ -43,7 +51,7 @@ def assert_blur(im, radius, data, passes=1, delta=0):
         assert_image(band, data, delta)
 
 
-def test_color_modes():
+def test_color_modes() -> None:
     with pytest.raises(ValueError):
         box_blur(sample.convert("1"))
     with pytest.raises(ValueError):
@@ -63,7 +71,12 @@ def test_color_modes():
         box_blur(sample.convert("YCbCr"))
 
 
-def test_radius_0():
+@pytest.mark.parametrize("size", ((0, 1), (1, 0)))
+def test_zero_dimension(size: tuple[int, int]) -> None:
+    assert box_blur(Image.new("L", size)).size == size
+
+
+def test_radius_0() -> None:
     assert_blur(
         sample,
         0,
@@ -79,7 +92,7 @@ def test_radius_0():
     )
 
 
-def test_radius_0_02():
+def test_radius_0_02() -> None:
     assert_blur(
         sample,
         0.02,
@@ -96,7 +109,7 @@ def test_radius_0_02():
     )
 
 
-def test_radius_0_05():
+def test_radius_0_05() -> None:
     assert_blur(
         sample,
         0.05,
@@ -113,7 +126,7 @@ def test_radius_0_05():
     )
 
 
-def test_radius_0_1():
+def test_radius_0_1() -> None:
     assert_blur(
         sample,
         0.1,
@@ -130,7 +143,7 @@ def test_radius_0_1():
     )
 
 
-def test_radius_0_5():
+def test_radius_0_5() -> None:
     assert_blur(
         sample,
         0.5,
@@ -147,7 +160,7 @@ def test_radius_0_5():
     )
 
 
-def test_radius_1():
+def test_radius_1() -> None:
     assert_blur(
         sample,
         1,
@@ -164,7 +177,7 @@ def test_radius_1():
     )
 
 
-def test_radius_1_5():
+def test_radius_1_5() -> None:
     assert_blur(
         sample,
         1.5,
@@ -181,7 +194,7 @@ def test_radius_1_5():
     )
 
 
-def test_radius_bigger_then_half():
+def test_radius_bigger_then_half() -> None:
     assert_blur(
         sample,
         3,
@@ -198,7 +211,7 @@ def test_radius_bigger_then_half():
     )
 
 
-def test_radius_bigger_then_width():
+def test_radius_bigger_then_width() -> None:
     assert_blur(
         sample,
         10,
@@ -213,7 +226,7 @@ def test_radius_bigger_then_width():
     )
 
 
-def test_extreme_large_radius():
+def test_extreme_large_radius() -> None:
     assert_blur(
         sample,
         600,
@@ -228,7 +241,7 @@ def test_extreme_large_radius():
     )
 
 
-def test_two_passes():
+def test_two_passes() -> None:
     assert_blur(
         sample,
         1,
@@ -246,7 +259,7 @@ def test_two_passes():
     )
 
 
-def test_three_passes():
+def test_three_passes() -> None:
     assert_blur(
         sample,
         1,
diff --git a/Tests/test_color_lut.py b/Tests/test_color_lut.py
index 6d9a60570..36ab187f2 100644
--- a/Tests/test_color_lut.py
+++ b/Tests/test_color_lut.py
@@ -1,4 +1,7 @@
+from __future__ import annotations
+
 from array import array
+from types import ModuleType
 
 import pytest
 
@@ -6,6 +9,7 @@ from PIL import Image, ImageFilter
 
 from .helper import assert_image_equal
 
+numpy: ModuleType | None
 try:
     import numpy
 except ImportError:
@@ -13,7 +17,9 @@ except ImportError:
 
 
 class TestColorLut3DCoreAPI:
-    def generate_identity_table(self, channels, size):
+    def generate_identity_table(
+        self, channels: int, size: int | tuple[int, int, int]
+    ) -> tuple[int, int, int, int, list[float]]:
         if isinstance(size, tuple):
             size_1d, size_2d, size_3d = size
         else:
@@ -39,7 +45,7 @@ class TestColorLut3DCoreAPI:
             [item for sublist in table for item in sublist],
         )
 
-    def test_wrong_args(self):
+    def test_wrong_args(self) -> None:
         im = Image.new("RGB", (10, 10), 0)
 
         with pytest.raises(ValueError, match="filter"):
@@ -99,94 +105,68 @@ class TestColorLut3DCoreAPI:
         with pytest.raises(TypeError):
             im.im.color_lut_3d("RGB", Image.Resampling.BILINEAR, 3, 2, 2, 2, 16)
 
-    def test_correct_args(self):
-        im = Image.new("RGB", (10, 10), 0)
-
-        im.im.color_lut_3d(
-            "RGB", Image.Resampling.BILINEAR, *self.generate_identity_table(3, 3)
-        )
-
-        im.im.color_lut_3d(
-            "CMYK", Image.Resampling.BILINEAR, *self.generate_identity_table(4, 3)
-        )
-
-        im.im.color_lut_3d(
-            "RGB",
-            Image.Resampling.BILINEAR,
-            *self.generate_identity_table(3, (2, 3, 3)),
-        )
-
-        im.im.color_lut_3d(
-            "RGB",
-            Image.Resampling.BILINEAR,
-            *self.generate_identity_table(3, (65, 3, 3)),
-        )
-
-        im.im.color_lut_3d(
-            "RGB",
-            Image.Resampling.BILINEAR,
-            *self.generate_identity_table(3, (3, 65, 3)),
-        )
-
-        im.im.color_lut_3d(
-            "RGB",
-            Image.Resampling.BILINEAR,
-            *self.generate_identity_table(3, (3, 3, 65)),
-        )
-
-    def test_wrong_mode(self):
-        with pytest.raises(ValueError, match="wrong mode"):
-            im = Image.new("L", (10, 10), 0)
-            im.im.color_lut_3d(
-                "RGB", Image.Resampling.BILINEAR, *self.generate_identity_table(3, 3)
-            )
-
-        with pytest.raises(ValueError, match="wrong mode"):
-            im = Image.new("RGB", (10, 10), 0)
-            im.im.color_lut_3d(
-                "L", Image.Resampling.BILINEAR, *self.generate_identity_table(3, 3)
-            )
-
-        with pytest.raises(ValueError, match="wrong mode"):
-            im = Image.new("L", (10, 10), 0)
-            im.im.color_lut_3d(
-                "L", Image.Resampling.BILINEAR, *self.generate_identity_table(3, 3)
-            )
-
-        with pytest.raises(ValueError, match="wrong mode"):
-            im = Image.new("RGB", (10, 10), 0)
-            im.im.color_lut_3d(
-                "RGBA", Image.Resampling.BILINEAR, *self.generate_identity_table(3, 3)
-            )
-
-        with pytest.raises(ValueError, match="wrong mode"):
-            im = Image.new("RGB", (10, 10), 0)
-            im.im.color_lut_3d(
-                "RGB", Image.Resampling.BILINEAR, *self.generate_identity_table(4, 3)
-            )
-
-    def test_correct_mode(self):
-        im = Image.new("RGBA", (10, 10), 0)
-        im.im.color_lut_3d(
-            "RGBA", Image.Resampling.BILINEAR, *self.generate_identity_table(3, 3)
-        )
-
-        im = Image.new("RGBA", (10, 10), 0)
-        im.im.color_lut_3d(
-            "RGBA", Image.Resampling.BILINEAR, *self.generate_identity_table(4, 3)
-        )
-
+    @pytest.mark.parametrize(
+        "lut_mode, table_channels, table_size",
+        [
+            ("RGB", 3, 3),
+            ("CMYK", 4, 3),
+            ("RGB", 3, (2, 3, 3)),
+            ("RGB", 3, (65, 3, 3)),
+            ("RGB", 3, (3, 65, 3)),
+            ("RGB", 3, (2, 3, 65)),
+        ],
+    )
+    def test_correct_args(
+        self, lut_mode: str, table_channels: int, table_size: int | tuple[int, int, int]
+    ) -> None:
         im = Image.new("RGB", (10, 10), 0)
         im.im.color_lut_3d(
-            "HSV", Image.Resampling.BILINEAR, *self.generate_identity_table(3, 3)
+            lut_mode,
+            Image.Resampling.BILINEAR,
+            *self.generate_identity_table(table_channels, table_size),
         )
 
-        im = Image.new("RGB", (10, 10), 0)
+    @pytest.mark.parametrize(
+        "image_mode, lut_mode, table_channels, table_size",
+        [
+            ("L", "RGB", 3, 3),
+            ("RGB", "L", 3, 3),
+            ("L", "L", 3, 3),
+            ("RGB", "RGBA", 3, 3),
+            ("RGB", "RGB", 4, 3),
+        ],
+    )
+    def test_wrong_mode(
+        self, image_mode: str, lut_mode: str, table_channels: int, table_size: int
+    ) -> None:
+        with pytest.raises(ValueError, match="wrong mode"):
+            im = Image.new(image_mode, (10, 10), 0)
+            im.im.color_lut_3d(
+                lut_mode,
+                Image.Resampling.BILINEAR,
+                *self.generate_identity_table(table_channels, table_size),
+            )
+
+    @pytest.mark.parametrize(
+        "image_mode, lut_mode, table_channels, table_size",
+        [
+            ("RGBA", "RGBA", 3, 3),
+            ("RGBA", "RGBA", 4, 3),
+            ("RGB", "HSV", 3, 3),
+            ("RGB", "RGBA", 4, 3),
+        ],
+    )
+    def test_correct_mode(
+        self, image_mode: str, lut_mode: str, table_channels: int, table_size: int
+    ) -> None:
+        im = Image.new(image_mode, (10, 10), 0)
         im.im.color_lut_3d(
-            "RGBA", Image.Resampling.BILINEAR, *self.generate_identity_table(4, 3)
+            lut_mode,
+            Image.Resampling.BILINEAR,
+            *self.generate_identity_table(table_channels, table_size),
         )
 
-    def test_identities(self):
+    def test_identities(self) -> None:
         g = Image.linear_gradient("L")
         im = Image.merge(
             "RGB",
@@ -222,7 +202,7 @@ class TestColorLut3DCoreAPI:
             ),
         )
 
-    def test_identities_4_channels(self):
+    def test_identities_4_channels(self) -> None:
         g = Image.linear_gradient("L")
         im = Image.merge(
             "RGB",
@@ -245,7 +225,7 @@ class TestColorLut3DCoreAPI:
             ),
         )
 
-    def test_copy_alpha_channel(self):
+    def test_copy_alpha_channel(self) -> None:
         g = Image.linear_gradient("L")
         im = Image.merge(
             "RGBA",
@@ -268,7 +248,7 @@ class TestColorLut3DCoreAPI:
             ),
         )
 
-    def test_channels_order(self):
+    def test_channels_order(self) -> None:
         g = Image.linear_gradient("L")
         im = Image.merge(
             "RGB",
@@ -293,7 +273,7 @@ class TestColorLut3DCoreAPI:
                     ])))
         # fmt: on
 
-    def test_overflow(self):
+    def test_overflow(self) -> None:
         g = Image.linear_gradient("L")
         im = Image.merge(
             "RGB",
@@ -315,6 +295,7 @@ class TestColorLut3DCoreAPI:
                                   -1,  2,  2,   2,  2,  2,
                               ])).load()
         # fmt: on
+        assert transformed is not None
         assert transformed[0, 0] == (0, 0, 255)
         assert transformed[50, 50] == (0, 0, 255)
         assert transformed[255, 0] == (0, 255, 255)
@@ -335,6 +316,7 @@ class TestColorLut3DCoreAPI:
                                   -3,  5,  5,   5,  5,  5,
                               ])).load()
         # fmt: on
+        assert transformed is not None
         assert transformed[0, 0] == (0, 0, 255)
         assert transformed[50, 50] == (0, 0, 255)
         assert transformed[255, 0] == (0, 255, 255)
@@ -346,12 +328,12 @@ class TestColorLut3DCoreAPI:
 
 
 class TestColorLut3DFilter:
-    def test_wrong_args(self):
+    def test_wrong_args(self) -> None:
         with pytest.raises(ValueError, match="should be either an integer"):
-            ImageFilter.Color3DLUT("small", [1])
+            ImageFilter.Color3DLUT("small", [1])  # type: ignore[arg-type]
 
         with pytest.raises(ValueError, match="should be either an integer"):
-            ImageFilter.Color3DLUT((11, 11), [1])
+            ImageFilter.Color3DLUT((11, 11), [1])  # type: ignore[arg-type]
 
         with pytest.raises(ValueError, match=r"in \[2, 65\] range"):
             ImageFilter.Color3DLUT((11, 11, 1), [1])
@@ -374,7 +356,7 @@ class TestColorLut3DFilter:
         with pytest.raises(ValueError, match="Only 3 or 4 output"):
             ImageFilter.Color3DLUT((2, 2, 2), [[1, 1]] * 8, channels=2)
 
-    def test_convert_table(self):
+    def test_convert_table(self) -> None:
         lut = ImageFilter.Color3DLUT(2, [0, 1, 2] * 8)
         assert tuple(lut.size) == (2, 2, 2)
         assert lut.name == "Color 3D LUT"
@@ -392,7 +374,8 @@ class TestColorLut3DFilter:
         assert lut.table == list(range(4)) * 8
 
     @pytest.mark.skipif(numpy is None, reason="NumPy not installed")
-    def test_numpy_sources(self):
+    def test_numpy_sources(self) -> None:
+        assert numpy is not None
         table = numpy.ones((5, 6, 7, 3), dtype=numpy.float16)
         with pytest.raises(ValueError, match="should have either channels"):
             lut = ImageFilter.Color3DLUT((5, 6, 7), table)
@@ -425,7 +408,8 @@ class TestColorLut3DFilter:
         assert lut.table[0] == 33
 
     @pytest.mark.skipif(numpy is None, reason="NumPy not installed")
-    def test_numpy_formats(self):
+    def test_numpy_formats(self) -> None:
+        assert numpy is not None
         g = Image.linear_gradient("L")
         im = Image.merge(
             "RGB",
@@ -464,7 +448,7 @@ class TestColorLut3DFilter:
         lut.table = numpy.array(lut.table, dtype=numpy.int8)
         im.filter(lut)
 
-    def test_repr(self):
+    def test_repr(self) -> None:
         lut = ImageFilter.Color3DLUT(2, [0, 1, 2] * 8)
         assert repr(lut) == "<Color3DLUT from list size=2x2x2 channels=3>"
 
@@ -482,7 +466,7 @@ class TestColorLut3DFilter:
 
 
 class TestGenerateColorLut3D:
-    def test_wrong_channels_count(self):
+    def test_wrong_channels_count(self) -> None:
         with pytest.raises(ValueError, match="3 or 4 output channels"):
             ImageFilter.Color3DLUT.generate(
                 5, channels=2, callback=lambda r, g, b: (r, g, b)
@@ -496,7 +480,7 @@ class TestGenerateColorLut3D:
                 5, channels=4, callback=lambda r, g, b: (r, g, b)
             )
 
-    def test_3_channels(self):
+    def test_3_channels(self) -> None:
         lut = ImageFilter.Color3DLUT.generate(5, lambda r, g, b: (r, g, b))
         assert tuple(lut.size) == (5, 5, 5)
         assert lut.name == "Color 3D LUT"
@@ -506,7 +490,7 @@ class TestGenerateColorLut3D:
             1.0, 0.0, 0.0,  0.0, 0.25, 0.0,  0.25, 0.25, 0.0,  0.5, 0.25, 0.0]
         # fmt: on
 
-    def test_4_channels(self):
+    def test_4_channels(self) -> None:
         lut = ImageFilter.Color3DLUT.generate(
             5, channels=4, callback=lambda r, g, b: (b, r, g, (r + g + b) / 2)
         )
@@ -519,7 +503,7 @@ class TestGenerateColorLut3D:
         ]
         # fmt: on
 
-    def test_apply(self):
+    def test_apply(self) -> None:
         lut = ImageFilter.Color3DLUT.generate(5, lambda r, g, b: (r, g, b))
 
         g = Image.linear_gradient("L")
@@ -535,7 +519,7 @@ class TestGenerateColorLut3D:
 
 
 class TestTransformColorLut3D:
-    def test_wrong_args(self):
+    def test_wrong_args(self) -> None:
         source = ImageFilter.Color3DLUT.generate(5, lambda r, g, b: (r, g, b))
 
         with pytest.raises(ValueError, match="Only 3 or 4 output"):
@@ -550,7 +534,7 @@ class TestTransformColorLut3D:
         with pytest.raises(TypeError):
             source.transform(lambda r, g, b, a: (r, g, b))
 
-    def test_target_mode(self):
+    def test_target_mode(self) -> None:
         source = ImageFilter.Color3DLUT.generate(
             2, lambda r, g, b: (r, g, b), target_mode="HSV"
         )
@@ -561,7 +545,7 @@ class TestTransformColorLut3D:
         lut = source.transform(lambda r, g, b: (r, g, b), target_mode="RGB")
         assert lut.mode == "RGB"
 
-    def test_3_to_3_channels(self):
+    def test_3_to_3_channels(self) -> None:
         source = ImageFilter.Color3DLUT.generate((3, 4, 5), lambda r, g, b: (r, g, b))
         lut = source.transform(lambda r, g, b: (r * r, g * g, b * b))
         assert tuple(lut.size) == tuple(source.size)
@@ -569,7 +553,7 @@ class TestTransformColorLut3D:
         assert lut.table != source.table
         assert lut.table[:10] == [0.0, 0.0, 0.0, 0.25, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0]
 
-    def test_3_to_4_channels(self):
+    def test_3_to_4_channels(self) -> None:
         source = ImageFilter.Color3DLUT.generate((6, 5, 4), lambda r, g, b: (r, g, b))
         lut = source.transform(lambda r, g, b: (r * r, g * g, b * b, 1), channels=4)
         assert tuple(lut.size) == tuple(source.size)
@@ -581,7 +565,7 @@ class TestTransformColorLut3D:
             0.4**2, 0.0, 0.0, 1,  0.6**2, 0.0, 0.0, 1]
         # fmt: on
 
-    def test_4_to_3_channels(self):
+    def test_4_to_3_channels(self) -> None:
         source = ImageFilter.Color3DLUT.generate(
             (3, 6, 5), lambda r, g, b: (r, g, b, 1), channels=4
         )
@@ -597,7 +581,7 @@ class TestTransformColorLut3D:
             1.0, 0.96, 1.0,  0.75, 0.96, 1.0,  0.0, 0.96, 1.0]
         # fmt: on
 
-    def test_4_to_4_channels(self):
+    def test_4_to_4_channels(self) -> None:
         source = ImageFilter.Color3DLUT.generate(
             (6, 5, 4), lambda r, g, b: (r, g, b, 1), channels=4
         )
@@ -611,7 +595,7 @@ class TestTransformColorLut3D:
             0.4**2, 0.0, 0.0, 0.5,  0.6**2, 0.0, 0.0, 0.5]
         # fmt: on
 
-    def test_with_normals_3_channels(self):
+    def test_with_normals_3_channels(self) -> None:
         source = ImageFilter.Color3DLUT.generate(
             (6, 5, 4), lambda r, g, b: (r * r, g * g, b * b)
         )
@@ -627,7 +611,7 @@ class TestTransformColorLut3D:
             0.24, 0.0, 0.0,  0.8 - (0.8**2), 0, 0,  0, 0, 0]
         # fmt: on
 
-    def test_with_normals_4_channels(self):
+    def test_with_normals_4_channels(self) -> None:
         source = ImageFilter.Color3DLUT.generate(
             (3, 6, 5), lambda r, g, b: (r * r, g * g, b * b, 1), channels=4
         )
diff --git a/Tests/test_core_resources.py b/Tests/test_core_resources.py
index f2105d6ca..2c1de8bc3 100644
--- a/Tests/test_core_resources.py
+++ b/Tests/test_core_resources.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+import sys
+
 import pytest
 
 from PIL import Image
@@ -5,7 +9,7 @@ from PIL import Image
 from .helper import is_pypy
 
 
-def test_get_stats():
+def test_get_stats() -> None:
     # Create at least one image
     Image.new("RGB", (10, 10))
 
@@ -18,7 +22,7 @@ def test_get_stats():
     assert "blocks_cached" in stats
 
 
-def test_reset_stats():
+def test_reset_stats() -> None:
     Image.core.reset_stats()
 
     stats = Image.core.get_stats()
@@ -31,19 +35,19 @@ def test_reset_stats():
 
 
 class TestCoreMemory:
-    def teardown_method(self):
+    def teardown_method(self) -> None:
         # Restore default values
         Image.core.set_alignment(1)
         Image.core.set_block_size(1024 * 1024)
         Image.core.set_blocks_max(0)
         Image.core.clear_cache()
 
-    def test_get_alignment(self):
+    def test_get_alignment(self) -> None:
         alignment = Image.core.get_alignment()
 
         assert alignment > 0
 
-    def test_set_alignment(self):
+    def test_set_alignment(self) -> None:
         for i in [1, 2, 4, 8, 16, 32]:
             Image.core.set_alignment(i)
             alignment = Image.core.get_alignment()
@@ -59,12 +63,12 @@ class TestCoreMemory:
         with pytest.raises(ValueError):
             Image.core.set_alignment(3)
 
-    def test_get_block_size(self):
+    def test_get_block_size(self) -> None:
         block_size = Image.core.get_block_size()
 
         assert block_size >= 4096
 
-    def test_set_block_size(self):
+    def test_set_block_size(self) -> None:
         for i in [4096, 2 * 4096, 3 * 4096]:
             Image.core.set_block_size(i)
             block_size = Image.core.get_block_size()
@@ -80,7 +84,7 @@ class TestCoreMemory:
         with pytest.raises(ValueError):
             Image.core.set_block_size(4000)
 
-    def test_set_block_size_stats(self):
+    def test_set_block_size_stats(self) -> None:
         Image.core.reset_stats()
         Image.core.set_blocks_max(0)
         Image.core.set_block_size(4096)
@@ -92,12 +96,12 @@ class TestCoreMemory:
         if not is_pypy():
             assert stats["freed_blocks"] >= 64
 
-    def test_get_blocks_max(self):
+    def test_get_blocks_max(self) -> None:
         blocks_max = Image.core.get_blocks_max()
 
         assert blocks_max >= 0
 
-    def test_set_blocks_max(self):
+    def test_set_blocks_max(self) -> None:
         for i in [0, 1, 10]:
             Image.core.set_blocks_max(i)
             blocks_max = Image.core.get_blocks_max()
@@ -108,9 +112,12 @@ class TestCoreMemory:
 
         with pytest.raises(ValueError):
             Image.core.set_blocks_max(-1)
+        if sys.maxsize < 2**32:
+            with pytest.raises(ValueError):
+                Image.core.set_blocks_max(2**29)
 
     @pytest.mark.skipif(is_pypy(), reason="Images not collected")
-    def test_set_blocks_max_stats(self):
+    def test_set_blocks_max_stats(self) -> None:
         Image.core.reset_stats()
         Image.core.set_blocks_max(128)
         Image.core.set_block_size(4096)
@@ -125,7 +132,7 @@ class TestCoreMemory:
         assert stats["blocks_cached"] == 64
 
     @pytest.mark.skipif(is_pypy(), reason="Images not collected")
-    def test_clear_cache_stats(self):
+    def test_clear_cache_stats(self) -> None:
         Image.core.reset_stats()
         Image.core.clear_cache()
         Image.core.set_blocks_max(128)
@@ -142,7 +149,7 @@ class TestCoreMemory:
         assert stats["freed_blocks"] >= 48
         assert stats["blocks_cached"] == 16
 
-    def test_large_images(self):
+    def test_large_images(self) -> None:
         Image.core.reset_stats()
         Image.core.set_blocks_max(0)
         Image.core.set_block_size(4096)
@@ -159,14 +166,14 @@ class TestCoreMemory:
 
 
 class TestEnvVars:
-    def teardown_method(self):
+    def teardown_method(self) -> None:
         # Restore default values
         Image.core.set_alignment(1)
         Image.core.set_block_size(1024 * 1024)
         Image.core.set_blocks_max(0)
         Image.core.clear_cache()
 
-    def test_units(self):
+    def test_units(self) -> None:
         Image._apply_env_variables({"PILLOW_BLOCKS_MAX": "2K"})
         assert Image.core.get_blocks_max() == 2 * 1024
         Image._apply_env_variables({"PILLOW_BLOCK_SIZE": "2m"})
@@ -180,6 +187,6 @@ class TestEnvVars:
             {"PILLOW_BLOCKS_MAX": "wat"},
         ),
     )
-    def test_warnings(self, var):
+    def test_warnings(self, var: dict[str, str]) -> None:
         with pytest.warns(UserWarning):
             Image._apply_env_variables(var)
diff --git a/Tests/test_decompression_bomb.py b/Tests/test_decompression_bomb.py
index 4fd02449c..c140156f9 100644
--- a/Tests/test_decompression_bomb.py
+++ b/Tests/test_decompression_bomb.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image
@@ -10,16 +12,16 @@ ORIGINAL_LIMIT = Image.MAX_IMAGE_PIXELS
 
 
 class TestDecompressionBomb:
-    def teardown_method(self, method):
+    def teardown_method(self) -> None:
         Image.MAX_IMAGE_PIXELS = ORIGINAL_LIMIT
 
-    def test_no_warning_small_file(self):
+    def test_no_warning_small_file(self) -> None:
         # Implicit assert: no warning.
         # A warning would cause a failure.
         with Image.open(TEST_FILE):
             pass
 
-    def test_no_warning_no_limit(self):
+    def test_no_warning_no_limit(self) -> None:
         # Arrange
         # Turn limit off
         Image.MAX_IMAGE_PIXELS = None
@@ -31,7 +33,7 @@ class TestDecompressionBomb:
         with Image.open(TEST_FILE):
             pass
 
-    def test_warning(self):
+    def test_warning(self) -> None:
         # Set limit to trigger warning on the test file
         Image.MAX_IMAGE_PIXELS = 128 * 128 - 1
         assert Image.MAX_IMAGE_PIXELS == 128 * 128 - 1
@@ -40,7 +42,7 @@ class TestDecompressionBomb:
             with Image.open(TEST_FILE):
                 pass
 
-    def test_exception(self):
+    def test_exception(self) -> None:
         # Set limit to trigger exception on the test file
         Image.MAX_IMAGE_PIXELS = 64 * 128 - 1
         assert Image.MAX_IMAGE_PIXELS == 64 * 128 - 1
@@ -49,22 +51,31 @@ class TestDecompressionBomb:
             with Image.open(TEST_FILE):
                 pass
 
-    def test_exception_ico(self):
+    def test_exception_ico(self) -> None:
         with pytest.raises(Image.DecompressionBombError):
             with Image.open("Tests/images/decompression_bomb.ico"):
                 pass
 
-    def test_exception_gif(self):
+    def test_exception_gif(self) -> None:
         with pytest.raises(Image.DecompressionBombError):
             with Image.open("Tests/images/decompression_bomb.gif"):
                 pass
 
-    def test_exception_gif_extents(self):
+    def test_exception_gif_extents(self) -> None:
         with Image.open("Tests/images/decompression_bomb_extents.gif") as im:
             with pytest.raises(Image.DecompressionBombError):
                 im.seek(1)
 
-    def test_exception_bmp(self):
+    def test_exception_gif_zero_width(self) -> None:
+        # Set limit to trigger exception on the test file
+        Image.MAX_IMAGE_PIXELS = 4 * 64 * 128
+        assert Image.MAX_IMAGE_PIXELS == 4 * 64 * 128
+
+        with pytest.raises(Image.DecompressionBombError):
+            with Image.open("Tests/images/zero_width.gif"):
+                pass
+
+    def test_exception_bmp(self) -> None:
         with pytest.raises(Image.DecompressionBombError):
             with Image.open("Tests/images/bmp/b/reallybig.bmp"):
                 pass
@@ -72,15 +83,15 @@ class TestDecompressionBomb:
 
 class TestDecompressionCrop:
     @classmethod
-    def setup_class(cls):
+    def setup_class(cls) -> None:
         width, height = 128, 128
         Image.MAX_IMAGE_PIXELS = height * width * 4 - 1
 
     @classmethod
-    def teardown_class(cls):
+    def teardown_class(cls) -> None:
         Image.MAX_IMAGE_PIXELS = ORIGINAL_LIMIT
 
-    def test_enlarge_crop(self):
+    def test_enlarge_crop(self) -> None:
         # Crops can extend the extents, therefore we should have the
         # same decompression bomb warnings on them.
         with hopper() as src:
@@ -88,7 +99,7 @@ class TestDecompressionCrop:
             with pytest.warns(Image.DecompressionBombWarning):
                 src.crop(box)
 
-    def test_crop_decompression_checks(self):
+    def test_crop_decompression_checks(self) -> None:
         im = Image.new("RGB", (100, 100))
 
         for value in ((-9999, -9999, -9990, -9990), (-999, -999, -990, -990)):
diff --git a/Tests/test_deprecate.py b/Tests/test_deprecate.py
index f175b90af..82ff14181 100644
--- a/Tests/test_deprecate.py
+++ b/Tests/test_deprecate.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import _deprecate
@@ -7,9 +9,9 @@ from PIL import _deprecate
     "version, expected",
     [
         (
-            11,
-            "Old thing is deprecated and will be removed in Pillow 11 "
-            r"\(2024-10-15\)\. Use new thing instead\.",
+            12,
+            "Old thing is deprecated and will be removed in Pillow 12 "
+            r"\(2025-10-15\)\. Use new thing instead\.",
         ),
         (
             None,
@@ -18,12 +20,12 @@ from PIL import _deprecate
         ),
     ],
 )
-def test_version(version, expected):
+def test_version(version: int | None, expected: str) -> None:
     with pytest.warns(DeprecationWarning, match=expected):
         _deprecate.deprecate("Old thing", version, "new thing")
 
 
-def test_unknown_version():
+def test_unknown_version() -> None:
     expected = r"Unknown removal version: 12345. Update PIL\._deprecate\?"
     with pytest.raises(ValueError, match=expected):
         _deprecate.deprecate("Old thing", 12345, "new thing")
@@ -44,26 +46,26 @@ def test_unknown_version():
         ),
     ],
 )
-def test_old_version(deprecated, plural, expected):
+def test_old_version(deprecated: str, plural: bool, expected: str) -> None:
     expected = r""
     with pytest.raises(RuntimeError, match=expected):
         _deprecate.deprecate(deprecated, 1, plural=plural)
 
 
-def test_plural():
+def test_plural() -> None:
     expected = (
-        r"Old things are deprecated and will be removed in Pillow 11 \(2024-10-15\)\. "
+        r"Old things are deprecated and will be removed in Pillow 12 \(2025-10-15\)\. "
         r"Use new thing instead\."
     )
     with pytest.warns(DeprecationWarning, match=expected):
-        _deprecate.deprecate("Old things", 11, "new thing", plural=True)
+        _deprecate.deprecate("Old things", 12, "new thing", plural=True)
 
 
-def test_replacement_and_action():
+def test_replacement_and_action() -> None:
     expected = "Use only one of 'replacement' and 'action'"
     with pytest.raises(ValueError, match=expected):
         _deprecate.deprecate(
-            "Old thing", 11, replacement="new thing", action="Upgrade to new thing"
+            "Old thing", 12, replacement="new thing", action="Upgrade to new thing"
         )
 
 
@@ -74,18 +76,18 @@ def test_replacement_and_action():
         "Upgrade to new thing.",
     ],
 )
-def test_action(action):
+def test_action(action: str) -> None:
     expected = (
-        r"Old thing is deprecated and will be removed in Pillow 11 \(2024-10-15\)\. "
+        r"Old thing is deprecated and will be removed in Pillow 12 \(2025-10-15\)\. "
         r"Upgrade to new thing\."
     )
     with pytest.warns(DeprecationWarning, match=expected):
-        _deprecate.deprecate("Old thing", 11, action=action)
+        _deprecate.deprecate("Old thing", 12, action=action)
 
 
-def test_no_replacement_or_action():
+def test_no_replacement_or_action() -> None:
     expected = (
-        r"Old thing is deprecated and will be removed in Pillow 11 \(2024-10-15\)"
+        r"Old thing is deprecated and will be removed in Pillow 12 \(2025-10-15\)"
     )
     with pytest.warns(DeprecationWarning, match=expected):
-        _deprecate.deprecate("Old thing", 11)
+        _deprecate.deprecate("Old thing", 12)
diff --git a/Tests/test_features.py b/Tests/test_features.py
index c4e9cd368..ed7929973 100644
--- a/Tests/test_features.py
+++ b/Tests/test_features.py
@@ -1,5 +1,8 @@
+from __future__ import annotations
+
 import io
 import re
+from typing import Callable
 
 import pytest
 
@@ -7,33 +10,36 @@ from PIL import features
 
 from .helper import skip_unless_feature
 
-try:
-    from PIL import _webp
-except ImportError:
-    pass
 
-
-def test_check():
+def test_check() -> None:
     # Check the correctness of the convenience function
     for module in features.modules:
         assert features.check_module(module) == features.check(module)
     for codec in features.codecs:
         assert features.check_codec(codec) == features.check(codec)
     for feature in features.features:
-        assert features.check_feature(feature) == features.check(feature)
+        if "webp" in feature:
+            with pytest.warns(DeprecationWarning):
+                assert features.check_feature(feature) == features.check(feature)
+        else:
+            assert features.check_feature(feature) == features.check(feature)
 
 
-def test_version():
+def test_version() -> None:
     # Check the correctness of the convenience function
     # and the format of version numbers
 
-    def test(name, function):
+    def test(name: str, function: Callable[[str], str | None]) -> None:
         version = features.version(name)
         if not features.check(name):
             assert version is None
         else:
             assert function(name) == version
             if name != "PIL":
+                if name == "zlib" and version is not None:
+                    version = re.sub(".zlib-ng$", "", version)
+                elif name == "libtiff" and version is not None:
+                    version = re.sub("t$", "", version)
                 assert version is None or re.search(r"\d+(\.\d+)*$", version)
 
     for module in features.modules:
@@ -41,60 +47,67 @@ def test_version():
     for codec in features.codecs:
         test(codec, features.version_codec)
     for feature in features.features:
-        test(feature, features.version_feature)
+        if "webp" in feature:
+            with pytest.warns(DeprecationWarning):
+                test(feature, features.version_feature)
+        else:
+            test(feature, features.version_feature)
 
 
-@skip_unless_feature("webp")
-def test_webp_transparency():
-    assert features.check("transp_webp") != _webp.WebPDecoderBuggyAlpha()
-    assert features.check("transp_webp") == _webp.HAVE_TRANSPARENCY
+def test_webp_transparency() -> None:
+    with pytest.warns(DeprecationWarning):
+        assert (features.check("transp_webp") or False) == features.check_module("webp")
 
 
-@skip_unless_feature("webp")
-def test_webp_mux():
-    assert features.check("webp_mux") == _webp.HAVE_WEBPMUX
+def test_webp_mux() -> None:
+    with pytest.warns(DeprecationWarning):
+        assert (features.check("webp_mux") or False) == features.check_module("webp")
 
 
-@skip_unless_feature("webp")
-def test_webp_anim():
-    assert features.check("webp_anim") == _webp.HAVE_WEBPANIM
+def test_webp_anim() -> None:
+    with pytest.warns(DeprecationWarning):
+        assert (features.check("webp_anim") or False) == features.check_module("webp")
 
 
 @skip_unless_feature("libjpeg_turbo")
-def test_libjpeg_turbo_version():
-    assert re.search(r"\d+\.\d+\.\d+$", features.version("libjpeg_turbo"))
+def test_libjpeg_turbo_version() -> None:
+    version = features.version("libjpeg_turbo")
+    assert version is not None
+    assert re.search(r"\d+\.\d+\.\d+$", version)
 
 
 @skip_unless_feature("libimagequant")
-def test_libimagequant_version():
-    assert re.search(r"\d+\.\d+\.\d+$", features.version("libimagequant"))
+def test_libimagequant_version() -> None:
+    version = features.version("libimagequant")
+    assert version is not None
+    assert re.search(r"\d+\.\d+\.\d+$", version)
 
 
 @pytest.mark.parametrize("feature", features.modules)
-def test_check_modules(feature):
+def test_check_modules(feature: str) -> None:
     assert features.check_module(feature) in [True, False]
 
 
 @pytest.mark.parametrize("feature", features.codecs)
-def test_check_codecs(feature):
+def test_check_codecs(feature: str) -> None:
     assert features.check_codec(feature) in [True, False]
 
 
-def test_check_warns_on_nonexistent():
+def test_check_warns_on_nonexistent() -> None:
     with pytest.warns(UserWarning) as cm:
         has_feature = features.check("typo")
     assert has_feature is False
     assert str(cm[-1].message) == "Unknown feature 'typo'."
 
 
-def test_supported_modules():
+def test_supported_modules() -> None:
     assert isinstance(features.get_supported_modules(), list)
     assert isinstance(features.get_supported_codecs(), list)
     assert isinstance(features.get_supported_features(), list)
     assert isinstance(features.get_supported(), list)
 
 
-def test_unsupported_codec():
+def test_unsupported_codec() -> None:
     # Arrange
     codec = "unsupported_codec"
     # Act / Assert
@@ -104,7 +117,7 @@ def test_unsupported_codec():
         features.version_codec(codec)
 
 
-def test_unsupported_module():
+def test_unsupported_module() -> None:
     # Arrange
     module = "unsupported_module"
     # Act / Assert
@@ -114,9 +127,10 @@ def test_unsupported_module():
         features.version_module(module)
 
 
-def test_pilinfo():
+@pytest.mark.parametrize("supported_formats", (True, False))
+def test_pilinfo(supported_formats: bool) -> None:
     buf = io.StringIO()
-    features.pilinfo(buf)
+    features.pilinfo(buf, supported_formats=supported_formats)
     out = buf.getvalue()
     lines = out.splitlines()
     assert lines[0] == "-" * 68
@@ -126,9 +140,15 @@ def test_pilinfo():
     while lines[0].startswith("    "):
         lines = lines[1:]
     assert lines[0] == "-" * 68
-    assert lines[1].startswith("Python modules loaded from ")
-    assert lines[2].startswith("Binary modules loaded from ")
-    assert lines[3] == "-" * 68
+    assert lines[1].startswith("Python executable is")
+    lines = lines[2:]
+    if lines[0].startswith("Environment Python files loaded from"):
+        lines = lines[1:]
+    assert lines[0].startswith("System Python files loaded from")
+    assert lines[1] == "-" * 68
+    assert lines[2].startswith("Python Pillow modules loaded from ")
+    assert lines[3].startswith("Binary Pillow modules loaded from ")
+    assert lines[4] == "-" * 68
     jpeg = (
         "\n"
         + "-" * 68
@@ -139,4 +159,4 @@ def test_pilinfo():
         + "-" * 68
         + "\n"
     )
-    assert jpeg in out
+    assert supported_formats == (jpeg in out)
diff --git a/Tests/test_file_apng.py b/Tests/test_file_apng.py
index a22ac581d..ee6c867c3 100644
--- a/Tests/test_file_apng.py
+++ b/Tests/test_file_apng.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+from pathlib import Path
+
 import pytest
 
 from PIL import Image, ImageSequence, PngImagePlugin
@@ -6,7 +10,7 @@ from PIL import Image, ImageSequence, PngImagePlugin
 # APNG browser support tests and fixtures via:
 # https://philip.html5.org/tests/apng/tests.html
 # (referenced from https://wiki.mozilla.org/APNG_Specification)
-def test_apng_basic():
+def test_apng_basic() -> None:
     with Image.open("Tests/images/apng/single_frame.png") as im:
         assert not im.is_animated
         assert im.n_frames == 1
@@ -43,14 +47,14 @@ def test_apng_basic():
     "filename",
     ("Tests/images/apng/split_fdat.png", "Tests/images/apng/split_fdat_zero_chunk.png"),
 )
-def test_apng_fdat(filename):
+def test_apng_fdat(filename: str) -> None:
     with Image.open(filename) as im:
         im.seek(im.n_frames - 1)
         assert im.getpixel((0, 0)) == (0, 255, 0, 255)
         assert im.getpixel((64, 32)) == (0, 255, 0, 255)
 
 
-def test_apng_dispose():
+def test_apng_dispose() -> None:
     with Image.open("Tests/images/apng/dispose_op_none.png") as im:
         im.seek(im.n_frames - 1)
         assert im.getpixel((0, 0)) == (0, 255, 0, 255)
@@ -82,7 +86,7 @@ def test_apng_dispose():
         assert im.getpixel((64, 32)) == (0, 0, 0, 0)
 
 
-def test_apng_dispose_region():
+def test_apng_dispose_region() -> None:
     with Image.open("Tests/images/apng/dispose_op_none_region.png") as im:
         im.seek(im.n_frames - 1)
         assert im.getpixel((0, 0)) == (0, 255, 0, 255)
@@ -104,7 +108,7 @@ def test_apng_dispose_region():
         assert im.getpixel((64, 32)) == (0, 255, 0, 255)
 
 
-def test_apng_dispose_op_previous_frame():
+def test_apng_dispose_op_previous_frame() -> None:
     # Test that the dispose settings being used are from the previous frame
     #
     # Image created with:
@@ -129,14 +133,14 @@ def test_apng_dispose_op_previous_frame():
         assert im.getpixel((0, 0)) == (255, 0, 0, 255)
 
 
-def test_apng_dispose_op_background_p_mode():
+def test_apng_dispose_op_background_p_mode() -> None:
     with Image.open("Tests/images/apng/dispose_op_background_p_mode.png") as im:
         im.seek(1)
         im.load()
         assert im.size == (128, 64)
 
 
-def test_apng_blend():
+def test_apng_blend() -> None:
     with Image.open("Tests/images/apng/blend_op_source_solid.png") as im:
         im.seek(im.n_frames - 1)
         assert im.getpixel((0, 0)) == (0, 255, 0, 255)
@@ -163,20 +167,20 @@ def test_apng_blend():
         assert im.getpixel((64, 32)) == (0, 255, 0, 255)
 
 
-def test_apng_blend_transparency():
+def test_apng_blend_transparency() -> None:
     with Image.open("Tests/images/blend_transparency.png") as im:
         im.seek(1)
         assert im.getpixel((0, 0)) == (255, 0, 0)
 
 
-def test_apng_chunk_order():
+def test_apng_chunk_order() -> None:
     with Image.open("Tests/images/apng/fctl_actl.png") as im:
         im.seek(im.n_frames - 1)
         assert im.getpixel((0, 0)) == (0, 255, 0, 255)
         assert im.getpixel((64, 32)) == (0, 255, 0, 255)
 
 
-def test_apng_delay():
+def test_apng_delay() -> None:
     with Image.open("Tests/images/apng/delay.png") as im:
         im.seek(1)
         assert im.info.get("duration") == 500.0
@@ -216,7 +220,7 @@ def test_apng_delay():
         assert im.info.get("duration") == 1000.0
 
 
-def test_apng_num_plays():
+def test_apng_num_plays() -> None:
     with Image.open("Tests/images/apng/num_plays.png") as im:
         assert im.info.get("loop") == 0
 
@@ -224,20 +228,20 @@ def test_apng_num_plays():
         assert im.info.get("loop") == 1
 
 
-def test_apng_mode():
+def test_apng_mode() -> None:
     with Image.open("Tests/images/apng/mode_16bit.png") as im:
         assert im.mode == "RGBA"
         im.seek(im.n_frames - 1)
         assert im.getpixel((0, 0)) == (0, 0, 128, 191)
         assert im.getpixel((64, 32)) == (0, 0, 128, 191)
 
-    with Image.open("Tests/images/apng/mode_greyscale.png") as im:
+    with Image.open("Tests/images/apng/mode_grayscale.png") as im:
         assert im.mode == "L"
         im.seek(im.n_frames - 1)
         assert im.getpixel((0, 0)) == 128
         assert im.getpixel((64, 32)) == 255
 
-    with Image.open("Tests/images/apng/mode_greyscale_alpha.png") as im:
+    with Image.open("Tests/images/apng/mode_grayscale_alpha.png") as im:
         assert im.mode == "LA"
         im.seek(im.n_frames - 1)
         assert im.getpixel((0, 0)) == (128, 191)
@@ -254,8 +258,8 @@ def test_apng_mode():
         assert im.mode == "P"
         im.seek(im.n_frames - 1)
         im = im.convert("RGBA")
-        assert im.getpixel((0, 0)) == (255, 0, 0, 0)
-        assert im.getpixel((64, 32)) == (255, 0, 0, 0)
+        assert im.getpixel((0, 0)) == (0, 255, 0, 255)
+        assert im.getpixel((64, 32)) == (0, 255, 0, 255)
 
     with Image.open("Tests/images/apng/mode_palette_1bit_alpha.png") as im:
         assert im.mode == "P"
@@ -265,7 +269,7 @@ def test_apng_mode():
         assert im.getpixel((64, 32)) == (0, 0, 255, 128)
 
 
-def test_apng_chunk_errors():
+def test_apng_chunk_errors() -> None:
     with Image.open("Tests/images/apng/chunk_no_actl.png") as im:
         assert not im.is_animated
 
@@ -290,7 +294,7 @@ def test_apng_chunk_errors():
             im.seek(im.n_frames - 1)
 
 
-def test_apng_syntax_errors():
+def test_apng_syntax_errors() -> None:
     with pytest.warns(UserWarning):
         with Image.open("Tests/images/apng/syntax_num_frames_zero.png") as im:
             assert not im.is_animated
@@ -334,14 +338,14 @@ def test_apng_syntax_errors():
         "sequence_fdat_fctl.png",
     ),
 )
-def test_apng_sequence_errors(test_file):
+def test_apng_sequence_errors(test_file: str) -> None:
     with pytest.raises(SyntaxError):
         with Image.open(f"Tests/images/apng/{test_file}") as im:
             im.seek(im.n_frames - 1)
             im.load()
 
 
-def test_apng_save(tmp_path):
+def test_apng_save(tmp_path: Path) -> None:
     with Image.open("Tests/images/apng/single_frame.png") as im:
         test_file = str(tmp_path / "temp.png")
         im.save(test_file, save_all=True)
@@ -350,15 +354,13 @@ def test_apng_save(tmp_path):
         im.load()
         assert not im.is_animated
         assert im.n_frames == 1
-        assert im.get_format_mimetype() == "image/apng"
+        assert im.get_format_mimetype() == "image/png"
         assert im.info.get("default_image") is None
         assert im.getpixel((0, 0)) == (0, 255, 0, 255)
         assert im.getpixel((64, 32)) == (0, 255, 0, 255)
 
     with Image.open("Tests/images/apng/single_frame_default.png") as im:
-        frames = []
-        for frame_im in ImageSequence.Iterator(im):
-            frames.append(frame_im.copy())
+        frames = [frame_im.copy() for frame_im in ImageSequence.Iterator(im)]
         frames[0].save(
             test_file, save_all=True, default_image=True, append_images=frames[1:]
         )
@@ -374,7 +376,21 @@ def test_apng_save(tmp_path):
         assert im.getpixel((64, 32)) == (0, 255, 0, 255)
 
 
-def test_apng_save_split_fdat(tmp_path):
+def test_apng_save_alpha(tmp_path: Path) -> None:
+    test_file = str(tmp_path / "temp.png")
+
+    im = Image.new("RGBA", (1, 1), (255, 0, 0, 255))
+    im2 = Image.new("RGBA", (1, 1), (255, 0, 0, 127))
+    im.save(test_file, save_all=True, append_images=[im2])
+
+    with Image.open(test_file) as reloaded:
+        assert reloaded.getpixel((0, 0)) == (255, 0, 0, 255)
+
+        reloaded.seek(1)
+        assert reloaded.getpixel((0, 0)) == (255, 0, 0, 127)
+
+
+def test_apng_save_split_fdat(tmp_path: Path) -> None:
     # test to make sure we do not generate sequence errors when writing
     # frames with image data spanning multiple fdAT chunks (in this case
     # both the default image and first animation frame will span multiple
@@ -398,7 +414,7 @@ def test_apng_save_split_fdat(tmp_path):
         assert exception is None
 
 
-def test_apng_save_duration_loop(tmp_path):
+def test_apng_save_duration_loop(tmp_path: Path) -> None:
     test_file = str(tmp_path / "temp.png")
     with Image.open("Tests/images/apng/delay.png") as im:
         frames = []
@@ -436,29 +452,32 @@ def test_apng_save_duration_loop(tmp_path):
         test_file, save_all=True, append_images=[frame, frame], duration=[500, 100, 150]
     )
     with Image.open(test_file) as im:
-        im.load()
         assert im.n_frames == 1
-        assert im.info.get("duration") == 750
+        assert "duration" not in im.info
+
+    different_frame = Image.new("RGBA", (128, 64))
+    frame.save(
+        test_file,
+        save_all=True,
+        append_images=[frame, different_frame],
+        duration=[500, 100, 150],
+    )
+    with Image.open(test_file) as im:
+        assert im.n_frames == 2
+        assert im.info["duration"] == 600
+
+        im.seek(1)
+        assert im.info["duration"] == 150
 
     # test info duration
-    frame.info["duration"] = 750
-    frame.save(test_file, save_all=True)
+    frame.info["duration"] = 300
+    frame.save(test_file, save_all=True, append_images=[frame, different_frame])
     with Image.open(test_file) as im:
-        assert im.info.get("duration") == 750
+        assert im.n_frames == 2
+        assert im.info["duration"] == 600
 
 
-def test_apng_save_duplicate_duration(tmp_path):
-    test_file = str(tmp_path / "temp.png")
-    frame = Image.new("RGB", (1, 1))
-
-    # Test a single duration is correctly combined across duplicate frames
-    frame.save(test_file, save_all=True, append_images=[frame, frame], duration=500)
-    with Image.open(test_file) as im:
-        assert im.n_frames == 1
-        assert im.info.get("duration") == 1500
-
-
-def test_apng_save_disposal(tmp_path):
+def test_apng_save_disposal(tmp_path: Path) -> None:
     test_file = str(tmp_path / "temp.png")
     size = (128, 64)
     red = Image.new("RGBA", size, (255, 0, 0, 255))
@@ -559,7 +578,7 @@ def test_apng_save_disposal(tmp_path):
         assert im.getpixel((64, 32)) == (0, 0, 0, 0)
 
 
-def test_apng_save_disposal_previous(tmp_path):
+def test_apng_save_disposal_previous(tmp_path: Path) -> None:
     test_file = str(tmp_path / "temp.png")
     size = (128, 64)
     blue = Image.new("RGBA", size, (0, 0, 255, 255))
@@ -581,7 +600,7 @@ def test_apng_save_disposal_previous(tmp_path):
         assert im.getpixel((64, 32)) == (0, 255, 0, 255)
 
 
-def test_apng_save_blend(tmp_path):
+def test_apng_save_blend(tmp_path: Path) -> None:
     test_file = str(tmp_path / "temp.png")
     size = (128, 64)
     red = Image.new("RGBA", size, (255, 0, 0, 255))
@@ -649,7 +668,17 @@ def test_apng_save_blend(tmp_path):
         assert im.getpixel((0, 0)) == (0, 255, 0, 255)
 
 
-def test_seek_after_close():
+def test_apng_save_size(tmp_path: Path) -> None:
+    test_file = str(tmp_path / "temp.png")
+
+    im = Image.new("L", (100, 100))
+    im.save(test_file, save_all=True, append_images=[Image.new("L", (200, 200))])
+
+    with Image.open(test_file) as reloaded:
+        assert reloaded.size == (200, 200)
+
+
+def test_seek_after_close() -> None:
     im = Image.open("Tests/images/apng/delay.png")
     im.seek(1)
     im.close()
@@ -659,10 +688,39 @@ def test_seek_after_close():
 
 
 @pytest.mark.parametrize("mode", ("RGBA", "RGB", "P"))
-def test_different_modes_in_later_frames(mode, tmp_path):
+@pytest.mark.parametrize("default_image", (True, False))
+@pytest.mark.parametrize("duplicate", (True, False))
+def test_different_modes_in_later_frames(
+    mode: str, default_image: bool, duplicate: bool, tmp_path: Path
+) -> None:
     test_file = str(tmp_path / "temp.png")
 
     im = Image.new("L", (1, 1))
-    im.save(test_file, save_all=True, append_images=[Image.new(mode, (1, 1))])
+    im.save(
+        test_file,
+        save_all=True,
+        default_image=default_image,
+        append_images=[im.convert(mode) if duplicate else Image.new(mode, (1, 1), 1)],
+    )
     with Image.open(test_file) as reloaded:
         assert reloaded.mode == mode
+
+
+def test_different_durations(tmp_path: Path) -> None:
+    test_file = str(tmp_path / "temp.png")
+
+    with Image.open("Tests/images/apng/different_durations.png") as im:
+        for _ in range(3):
+            im.seek(0)
+            assert im.info["duration"] == 4000
+
+            im.seek(1)
+            assert im.info["duration"] == 1000
+
+        im.save(test_file, save_all=True)
+
+    with Image.open(test_file) as reloaded:
+        assert reloaded.info["duration"] == 4000
+
+        reloaded.seek(1)
+        assert reloaded.info["duration"] == 1000
diff --git a/Tests/test_file_blp.py b/Tests/test_file_blp.py
index 8b1355b62..1e2f20c40 100644
--- a/Tests/test_file_blp.py
+++ b/Tests/test_file_blp.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+from pathlib import Path
+
 import pytest
 
 from PIL import Image
@@ -10,7 +14,7 @@ from .helper import (
 )
 
 
-def test_load_blp1():
+def test_load_blp1() -> None:
     with Image.open("Tests/images/blp/blp1_jpeg.blp") as im:
         assert_image_equal_tofile(im, "Tests/images/blp/blp1_jpeg.png")
 
@@ -18,22 +22,22 @@ def test_load_blp1():
         im.load()
 
 
-def test_load_blp2_raw():
+def test_load_blp2_raw() -> None:
     with Image.open("Tests/images/blp/blp2_raw.blp") as im:
         assert_image_equal_tofile(im, "Tests/images/blp/blp2_raw.png")
 
 
-def test_load_blp2_dxt1():
+def test_load_blp2_dxt1() -> None:
     with Image.open("Tests/images/blp/blp2_dxt1.blp") as im:
         assert_image_equal_tofile(im, "Tests/images/blp/blp2_dxt1.png")
 
 
-def test_load_blp2_dxt1a():
+def test_load_blp2_dxt1a() -> None:
     with Image.open("Tests/images/blp/blp2_dxt1a.blp") as im:
         assert_image_equal_tofile(im, "Tests/images/blp/blp2_dxt1a.png")
 
 
-def test_save(tmp_path):
+def test_save(tmp_path: Path) -> None:
     f = str(tmp_path / "temp.blp")
 
     for version in ("BLP1", "BLP2"):
@@ -67,7 +71,7 @@ def test_save(tmp_path):
         "Tests/images/timeout-ef9112a065e7183fa7faa2e18929b03e44ee16bf.blp",
     ],
 )
-def test_crashes(test_file):
+def test_crashes(test_file: str) -> None:
     with open(test_file, "rb") as f:
         with Image.open(f) as im:
             with pytest.raises(OSError):
diff --git a/Tests/test_file_bmp.py b/Tests/test_file_bmp.py
index 9e79937e9..2ff4160bd 100644
--- a/Tests/test_file_bmp.py
+++ b/Tests/test_file_bmp.py
@@ -1,8 +1,11 @@
+from __future__ import annotations
+
 import io
+from pathlib import Path
 
 import pytest
 
-from PIL import BmpImagePlugin, Image
+from PIL import BmpImagePlugin, Image, _binary
 
 from .helper import (
     assert_image_equal,
@@ -12,8 +15,8 @@ from .helper import (
 )
 
 
-def test_sanity(tmp_path):
-    def roundtrip(im):
+def test_sanity(tmp_path: Path) -> None:
+    def roundtrip(im: Image.Image) -> None:
         outfile = str(tmp_path / "temp.bmp")
 
         im.save(outfile, "BMP")
@@ -33,20 +36,20 @@ def test_sanity(tmp_path):
     roundtrip(hopper("RGB"))
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     with open("Tests/images/flower.jpg", "rb") as fp:
         with pytest.raises(SyntaxError):
             BmpImagePlugin.BmpImageFile(fp)
 
 
-def test_fallback_if_mmap_errors():
+def test_fallback_if_mmap_errors() -> None:
     # This image has been truncated,
     # so that the buffer is not large enough when using mmap
     with Image.open("Tests/images/mmap_error.bmp") as im:
         assert_image_equal_tofile(im, "Tests/images/pal8_offset.bmp")
 
 
-def test_save_to_bytes():
+def test_save_to_bytes() -> None:
     output = io.BytesIO()
     im = hopper()
     im.save(output, "BMP")
@@ -58,7 +61,7 @@ def test_save_to_bytes():
         assert reloaded.format == "BMP"
 
 
-def test_small_palette(tmp_path):
+def test_small_palette(tmp_path: Path) -> None:
     im = Image.new("P", (1, 1))
     colors = [0, 0, 0, 125, 125, 125, 255, 255, 255]
     im.putpalette(colors)
@@ -70,7 +73,7 @@ def test_small_palette(tmp_path):
         assert reloaded.getpalette() == colors
 
 
-def test_save_too_large(tmp_path):
+def test_save_too_large(tmp_path: Path) -> None:
     outfile = str(tmp_path / "temp.bmp")
     with Image.new("RGB", (1, 1)) as im:
         im._size = (37838, 37838)
@@ -78,7 +81,7 @@ def test_save_too_large(tmp_path):
             im.save(outfile)
 
 
-def test_dpi():
+def test_dpi() -> None:
     dpi = (72, 72)
 
     output = io.BytesIO()
@@ -90,7 +93,7 @@ def test_dpi():
         assert reloaded.info["dpi"] == (72.008961115161, 72.008961115161)
 
 
-def test_save_bmp_with_dpi(tmp_path):
+def test_save_bmp_with_dpi(tmp_path: Path) -> None:
     # Test for #1301
     # Arrange
     outfile = str(tmp_path / "temp.jpg")
@@ -108,7 +111,7 @@ def test_save_bmp_with_dpi(tmp_path):
             assert reloaded.format == "JPEG"
 
 
-def test_save_float_dpi(tmp_path):
+def test_save_float_dpi(tmp_path: Path) -> None:
     outfile = str(tmp_path / "temp.bmp")
     with Image.open("Tests/images/hopper.bmp") as im:
         im.save(outfile, dpi=(72.21216100543306, 72.21216100543306))
@@ -116,7 +119,7 @@ def test_save_float_dpi(tmp_path):
             assert reloaded.info["dpi"] == (72.21216100543306, 72.21216100543306)
 
 
-def test_load_dib():
+def test_load_dib() -> None:
     # test for #1293, Imagegrab returning Unsupported Bitfields Format
     with Image.open("Tests/images/clipboard.dib") as im:
         assert im.format == "DIB"
@@ -125,7 +128,30 @@ def test_load_dib():
         assert_image_equal_tofile(im, "Tests/images/clipboard_target.png")
 
 
-def test_save_dib(tmp_path):
+@pytest.mark.parametrize(
+    "header_size, path",
+    (
+        (12, "g/pal8os2.bmp"),
+        (40, "g/pal1.bmp"),
+        (52, "q/rgb32h52.bmp"),
+        (56, "q/rgba32h56.bmp"),
+        (64, "q/pal8os2v2.bmp"),
+        (108, "g/pal8v4.bmp"),
+        (124, "g/pal8v5.bmp"),
+    ),
+)
+def test_dib_header_size(header_size: int, path: str) -> None:
+    image_path = "Tests/images/bmp/" + path
+    with open(image_path, "rb") as fp:
+        data = fp.read()[14:]
+    assert _binary.i32le(data) == header_size
+
+    dib = io.BytesIO(data)
+    with Image.open(dib) as im:
+        im.load()
+
+
+def test_save_dib(tmp_path: Path) -> None:
     outfile = str(tmp_path / "temp.dib")
 
     with Image.open("Tests/images/clipboard.dib") as im:
@@ -137,7 +163,7 @@ def test_save_dib(tmp_path):
             assert_image_equal(im, reloaded)
 
 
-def test_rgba_bitfields():
+def test_rgba_bitfields() -> None:
     # This test image has been manually hexedited
     # to change the bitfield compression in the header from XBGR to RGBA
     with Image.open("Tests/images/rgb32bf-rgba.bmp") as im:
@@ -155,11 +181,11 @@ def test_rgba_bitfields():
         )
 
 
-def test_rle8():
+def test_rle8() -> None:
     with Image.open("Tests/images/hopper_rle8.bmp") as im:
         assert_image_similar_tofile(im.convert("RGB"), "Tests/images/hopper.bmp", 12)
 
-    with Image.open("Tests/images/hopper_rle8_greyscale.bmp") as im:
+    with Image.open("Tests/images/hopper_rle8_grayscale.bmp") as im:
         assert_image_equal_tofile(im, "Tests/images/bw_gradient.png")
 
     # This test image has been manually hexedited
@@ -175,7 +201,7 @@ def test_rle8():
                 im.load()
 
 
-def test_rle4():
+def test_rle4() -> None:
     with Image.open("Tests/images/bmp/g/pal4rle.bmp") as im:
         assert_image_similar_tofile(im, "Tests/images/bmp/g/pal4.bmp", 12)
 
@@ -191,7 +217,7 @@ def test_rle4():
         ("Tests/images/bmp/g/pal8rle.bmp", 1064),
     ),
 )
-def test_rle8_eof(file_name, length):
+def test_rle8_eof(file_name: str, length: int) -> None:
     with open(file_name, "rb") as fp:
         data = fp.read(length)
         with Image.open(io.BytesIO(data)) as im:
@@ -199,7 +225,7 @@ def test_rle8_eof(file_name, length):
                 im.load()
 
 
-def test_offset():
+def test_offset() -> None:
     # This image has been hexedited
     # to exclude the palette size from the pixel data offset
     with Image.open("Tests/images/pal8_offset.bmp") as im:
diff --git a/Tests/test_file_bufrstub.py b/Tests/test_file_bufrstub.py
index a7714c92c..77ee5b0ea 100644
--- a/Tests/test_file_bufrstub.py
+++ b/Tests/test_file_bufrstub.py
@@ -1,13 +1,18 @@
+from __future__ import annotations
+
+from pathlib import Path
+from typing import IO
+
 import pytest
 
-from PIL import BufrStubImagePlugin, Image
+from PIL import BufrStubImagePlugin, Image, ImageFile
 
 from .helper import hopper
 
 TEST_FILE = "Tests/images/gfs.t06z.rassda.tm00.bufr_d"
 
 
-def test_open():
+def test_open() -> None:
     # Act
     with Image.open(TEST_FILE) as im:
         # Assert
@@ -18,7 +23,7 @@ def test_open():
         assert im.size == (1, 1)
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     # Arrange
     invalid_file = "Tests/images/flower.jpg"
 
@@ -27,7 +32,7 @@ def test_invalid_file():
         BufrStubImagePlugin.BufrStubImageFile(invalid_file)
 
 
-def test_load():
+def test_load() -> None:
     # Arrange
     with Image.open(TEST_FILE) as im:
         # Act / Assert: stub cannot load without an implemented handler
@@ -35,7 +40,7 @@ def test_load():
             im.load()
 
 
-def test_save(tmp_path):
+def test_save(tmp_path: Path) -> None:
     # Arrange
     im = hopper()
     tmpfile = str(tmp_path / "temp.bufr")
@@ -45,31 +50,34 @@ def test_save(tmp_path):
         im.save(tmpfile)
 
 
-def test_handler(tmp_path):
-    class TestHandler:
+def test_handler(tmp_path: Path) -> None:
+    class TestHandler(ImageFile.StubHandler):
         opened = False
         loaded = False
         saved = False
 
-        def open(self, im):
+        def open(self, im: ImageFile.StubImageFile) -> None:
             self.opened = True
 
-        def load(self, im):
+        def load(self, im: ImageFile.StubImageFile) -> Image.Image:
             self.loaded = True
             im.fp.close()
             return Image.new("RGB", (1, 1))
 
-        def save(self, im, fp, filename):
+        def is_loaded(self) -> bool:
+            return self.loaded
+
+        def save(self, im: Image.Image, fp: IO[bytes], filename: str) -> None:
             self.saved = True
 
     handler = TestHandler()
     BufrStubImagePlugin.register_handler(handler)
     with Image.open(TEST_FILE) as im:
         assert handler.opened
-        assert not handler.loaded
+        assert not handler.is_loaded()
 
         im.load()
-        assert handler.loaded
+        assert handler.is_loaded()
 
         temp_file = str(tmp_path / "temp.bufr")
         im.save(temp_file)
diff --git a/Tests/test_file_container.py b/Tests/test_file_container.py
index 65cf6a75e..237045acc 100644
--- a/Tests/test_file_container.py
+++ b/Tests/test_file_container.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import ContainerIO, Image
@@ -7,21 +9,35 @@ from .helper import hopper
 TEST_FILE = "Tests/images/dummy.container"
 
 
-def test_sanity():
+def test_sanity() -> None:
     dir(Image)
     dir(ContainerIO)
 
 
-def test_isatty():
+def test_isatty() -> None:
     with hopper() as im:
         container = ContainerIO.ContainerIO(im, 0, 0)
 
     assert container.isatty() is False
 
 
-def test_seek_mode_0():
+def test_seekable() -> None:
+    with hopper() as im:
+        container = ContainerIO.ContainerIO(im, 0, 0)
+
+    assert container.seekable() is True
+
+
+@pytest.mark.parametrize(
+    "mode, expected_position",
+    (
+        (0, 33),
+        (1, 66),
+        (2, 100),
+    ),
+)
+def test_seek_mode(mode: int, expected_position: int) -> None:
     # Arrange
-    mode = 0
     with open(TEST_FILE, "rb") as fh:
         container = ContainerIO.ContainerIO(fh, 22, 100)
 
@@ -30,45 +46,25 @@ def test_seek_mode_0():
         container.seek(33, mode)
 
         # Assert
-        assert container.tell() == 33
-
-
-def test_seek_mode_1():
-    # Arrange
-    mode = 1
-    with open(TEST_FILE, "rb") as fh:
-        container = ContainerIO.ContainerIO(fh, 22, 100)
-
-        # Act
-        container.seek(33, mode)
-        container.seek(33, mode)
-
-        # Assert
-        assert container.tell() == 66
-
-
-def test_seek_mode_2():
-    # Arrange
-    mode = 2
-    with open(TEST_FILE, "rb") as fh:
-        container = ContainerIO.ContainerIO(fh, 22, 100)
-
-        # Act
-        container.seek(33, mode)
-        container.seek(33, mode)
-
-        # Assert
-        assert container.tell() == 100
+        assert container.tell() == expected_position
 
 
 @pytest.mark.parametrize("bytesmode", (True, False))
-def test_read_n0(bytesmode):
+def test_readable(bytesmode: bool) -> None:
+    with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
+        container = ContainerIO.ContainerIO(fh, 0, 120)
+
+    assert container.readable() is True
+
+
+@pytest.mark.parametrize("bytesmode", (True, False))
+def test_read_n0(bytesmode: bool) -> None:
     # Arrange
     with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
         container = ContainerIO.ContainerIO(fh, 22, 100)
 
         # Act
-        container.seek(81)
+        assert container.seek(81) == 81
         data = container.read()
 
         # Assert
@@ -78,13 +74,13 @@ def test_read_n0(bytesmode):
 
 
 @pytest.mark.parametrize("bytesmode", (True, False))
-def test_read_n(bytesmode):
+def test_read_n(bytesmode: bool) -> None:
     # Arrange
     with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
         container = ContainerIO.ContainerIO(fh, 22, 100)
 
         # Act
-        container.seek(81)
+        assert container.seek(81) == 81
         data = container.read(3)
 
         # Assert
@@ -94,13 +90,13 @@ def test_read_n(bytesmode):
 
 
 @pytest.mark.parametrize("bytesmode", (True, False))
-def test_read_eof(bytesmode):
+def test_read_eof(bytesmode: bool) -> None:
     # Arrange
     with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
         container = ContainerIO.ContainerIO(fh, 22, 100)
 
         # Act
-        container.seek(100)
+        assert container.seek(100) == 100
         data = container.read()
 
         # Assert
@@ -110,22 +106,66 @@ def test_read_eof(bytesmode):
 
 
 @pytest.mark.parametrize("bytesmode", (True, False))
-def test_readline(bytesmode):
-    # Arrange
+def test_readline(bytesmode: bool) -> None:
     with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
         container = ContainerIO.ContainerIO(fh, 0, 120)
 
-        # Act
         data = container.readline()
-
-        # Assert
         if bytesmode:
             data = data.decode()
         assert data == "This is line 1\n"
 
+        data = container.readline(4)
+        if bytesmode:
+            data = data.decode()
+        assert data == "This"
+
 
 @pytest.mark.parametrize("bytesmode", (True, False))
-def test_readlines(bytesmode):
+def test_readlines(bytesmode: bool) -> None:
+    expected = [
+        "This is line 1\n",
+        "This is line 2\n",
+        "This is line 3\n",
+        "This is line 4\n",
+        "This is line 5\n",
+        "This is line 6\n",
+        "This is line 7\n",
+        "This is line 8\n",
+    ]
+    with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
+        container = ContainerIO.ContainerIO(fh, 0, 120)
+
+        data = container.readlines()
+        if bytesmode:
+            data = [line.decode() for line in data]
+        assert data == expected
+
+        assert container.seek(0) == 0
+
+        data = container.readlines(2)
+        if bytesmode:
+            data = [line.decode() for line in data]
+        assert data == expected[:2]
+
+
+@pytest.mark.parametrize("bytesmode", (True, False))
+def test_write(bytesmode: bool) -> None:
+    with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
+        container = ContainerIO.ContainerIO(fh, 0, 120)
+
+        assert container.writable() is False
+
+        with pytest.raises(NotImplementedError):
+            container.write(b"" if bytesmode else "")
+        with pytest.raises(NotImplementedError):
+            container.writelines([])
+        with pytest.raises(NotImplementedError):
+            container.truncate()
+
+
+@pytest.mark.parametrize("bytesmode", (True, False))
+def test_iter(bytesmode: bool) -> None:
     # Arrange
     expected = [
         "This is line 1\n",
@@ -141,9 +181,21 @@ def test_readlines(bytesmode):
         container = ContainerIO.ContainerIO(fh, 0, 120)
 
         # Act
-        data = container.readlines()
+        data = []
+        for line in container:
+            data.append(line)
 
         # Assert
         if bytesmode:
             data = [line.decode() for line in data]
         assert data == expected
+
+
+@pytest.mark.parametrize("bytesmode", (True, False))
+def test_file(bytesmode: bool) -> None:
+    with open(TEST_FILE, "rb" if bytesmode else "r") as fh:
+        container = ContainerIO.ContainerIO(fh, 0, 120)
+
+        assert isinstance(container.fileno(), int)
+        container.flush()
+        container.close()
diff --git a/Tests/test_file_cur.py b/Tests/test_file_cur.py
index f04a20a22..dbf1b866d 100644
--- a/Tests/test_file_cur.py
+++ b/Tests/test_file_cur.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import CurImagePlugin, Image
@@ -5,7 +7,7 @@ from PIL import CurImagePlugin, Image
 TEST_FILE = "Tests/images/deerstalker.cur"
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open(TEST_FILE) as im:
         assert im.size == (32, 32)
         assert isinstance(im, CurImagePlugin.CurImageFile)
@@ -15,7 +17,7 @@ def test_sanity():
         assert im.getpixel((16, 16)) == (84, 87, 86, 255)
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
diff --git a/Tests/test_file_dcx.py b/Tests/test_file_dcx.py
index 22686af34..5deacd878 100644
--- a/Tests/test_file_dcx.py
+++ b/Tests/test_file_dcx.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import warnings
 
 import pytest
@@ -10,7 +12,7 @@ from .helper import assert_image_equal, hopper, is_pypy
 TEST_FILE = "Tests/images/hopper.dcx"
 
 
-def test_sanity():
+def test_sanity() -> None:
     # Arrange
 
     # Act
@@ -23,8 +25,8 @@ def test_sanity():
 
 
 @pytest.mark.skipif(is_pypy(), reason="Requires CPython")
-def test_unclosed_file():
-    def open():
+def test_unclosed_file() -> None:
+    def open() -> None:
         im = Image.open(TEST_FILE)
         im.load()
 
@@ -32,26 +34,30 @@ def test_unclosed_file():
         open()
 
 
-def test_closed_file():
+def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         im = Image.open(TEST_FILE)
         im.load()
         im.close()
 
 
-def test_context_manager():
+def test_context_manager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with Image.open(TEST_FILE) as im:
             im.load()
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     with open("Tests/images/flower.jpg", "rb") as fp:
         with pytest.raises(SyntaxError):
             DcxImagePlugin.DcxImageFile(fp)
 
 
-def test_tell():
+def test_tell() -> None:
     # Arrange
     with Image.open(TEST_FILE) as im:
         # Act
@@ -61,13 +67,13 @@ def test_tell():
         assert frame == 0
 
 
-def test_n_frames():
+def test_n_frames() -> None:
     with Image.open(TEST_FILE) as im:
         assert im.n_frames == 1
         assert not im.is_animated
 
 
-def test_eoferror():
+def test_eoferror() -> None:
     with Image.open(TEST_FILE) as im:
         n_frames = im.n_frames
 
@@ -80,7 +86,7 @@ def test_eoferror():
         im.seek(n_frames - 1)
 
 
-def test_seek_too_far():
+def test_seek_too_far() -> None:
     # Arrange
     with Image.open(TEST_FILE) as im:
         frame = 999  # too big on purpose
diff --git a/Tests/test_file_dds.py b/Tests/test_file_dds.py
index cac4108a8..9a826ebe8 100644
--- a/Tests/test_file_dds.py
+++ b/Tests/test_file_dds.py
@@ -1,5 +1,9 @@
 """Test DdsImagePlugin"""
+
+from __future__ import annotations
+
 from io import BytesIO
+from pathlib import Path
 
 import pytest
 
@@ -12,10 +16,16 @@ TEST_FILE_DXT3 = "Tests/images/dxt3-argb-8bbp-explicitalpha_MipMaps-1.dds"
 TEST_FILE_DXT5 = "Tests/images/dxt5-argb-8bbp-interpolatedalpha_MipMaps-1.dds"
 TEST_FILE_ATI1 = "Tests/images/ati1.dds"
 TEST_FILE_ATI2 = "Tests/images/ati2.dds"
+TEST_FILE_DX10_BC4_TYPELESS = "Tests/images/bc4_typeless.dds"
+TEST_FILE_DX10_BC4_UNORM = "Tests/images/bc4_unorm.dds"
 TEST_FILE_DX10_BC5_TYPELESS = "Tests/images/bc5_typeless.dds"
 TEST_FILE_DX10_BC5_UNORM = "Tests/images/bc5_unorm.dds"
 TEST_FILE_DX10_BC5_SNORM = "Tests/images/bc5_snorm.dds"
+TEST_FILE_DX10_BC1 = "Tests/images/bc1.dds"
+TEST_FILE_DX10_BC1_TYPELESS = "Tests/images/bc1_typeless.dds"
+TEST_FILE_BC4U = "Tests/images/bc4u.dds"
 TEST_FILE_BC5S = "Tests/images/bc5s.dds"
+TEST_FILE_BC5U = "Tests/images/bc5u.dds"
 TEST_FILE_BC6H = "Tests/images/bc6h.dds"
 TEST_FILE_BC6HS = "Tests/images/bc6h_sf.dds"
 TEST_FILE_DX10_BC7 = "Tests/images/bc7-argb-8bpp_MipMaps-1.dds"
@@ -25,14 +35,24 @@ TEST_FILE_DX10_R8G8B8A8_UNORM_SRGB = "Tests/images/DXGI_FORMAT_R8G8B8A8_UNORM_SR
 TEST_FILE_UNCOMPRESSED_L = "Tests/images/uncompressed_l.dds"
 TEST_FILE_UNCOMPRESSED_L_WITH_ALPHA = "Tests/images/uncompressed_la.dds"
 TEST_FILE_UNCOMPRESSED_RGB = "Tests/images/hopper.dds"
+TEST_FILE_UNCOMPRESSED_BGR15 = "Tests/images/bgr15.dds"
 TEST_FILE_UNCOMPRESSED_RGB_WITH_ALPHA = "Tests/images/uncompressed_rgb.dds"
 
 
-def test_sanity_dxt1():
-    """Check DXT1 images can be opened"""
+@pytest.mark.parametrize(
+    "image_path",
+    (
+        TEST_FILE_DXT1,
+        # hexeditted to use DX10 FourCC
+        TEST_FILE_DX10_BC1,
+        TEST_FILE_DX10_BC1_TYPELESS,
+    ),
+)
+def test_sanity_dxt1_bc1(image_path: str) -> None:
+    """Check DXT1 and BC1 images can be opened"""
     with Image.open(TEST_FILE_DXT1.replace(".dds", ".png")) as target:
         target = target.convert("RGBA")
-    with Image.open(TEST_FILE_DXT1) as im:
+    with Image.open(image_path) as im:
         im.load()
 
         assert im.format == "DDS"
@@ -42,7 +62,7 @@ def test_sanity_dxt1():
         assert_image_equal(im, target)
 
 
-def test_sanity_dxt3():
+def test_sanity_dxt3() -> None:
     """Check DXT3 images can be opened"""
 
     with Image.open(TEST_FILE_DXT3) as im:
@@ -55,7 +75,7 @@ def test_sanity_dxt3():
         assert_image_equal_tofile(im, TEST_FILE_DXT3.replace(".dds", ".png"))
 
 
-def test_sanity_dxt5():
+def test_sanity_dxt5() -> None:
     """Check DXT5 images can be opened"""
 
     with Image.open(TEST_FILE_DXT5) as im:
@@ -68,10 +88,18 @@ def test_sanity_dxt5():
     assert_image_equal_tofile(im, TEST_FILE_DXT5.replace(".dds", ".png"))
 
 
-def test_sanity_ati1():
-    """Check ATI1 images can be opened"""
+@pytest.mark.parametrize(
+    "image_path",
+    (
+        TEST_FILE_ATI1,
+        # hexeditted to use BC4U FourCC
+        TEST_FILE_BC4U,
+    ),
+)
+def test_sanity_ati1_bc4u(image_path: str) -> None:
+    """Check ATI1 and BC4U images can be opened"""
 
-    with Image.open(TEST_FILE_ATI1) as im:
+    with Image.open(image_path) as im:
         im.load()
 
         assert im.format == "DDS"
@@ -81,10 +109,39 @@ def test_sanity_ati1():
         assert_image_equal_tofile(im, TEST_FILE_ATI1.replace(".dds", ".png"))
 
 
-def test_sanity_ati2():
-    """Check ATI2 images can be opened"""
+@pytest.mark.parametrize(
+    "image_path",
+    (
+        TEST_FILE_DX10_BC4_UNORM,
+        # hexeditted to be typeless
+        TEST_FILE_DX10_BC4_TYPELESS,
+    ),
+)
+def test_dx10_bc4(image_path: str) -> None:
+    """Check DX10 BC4 images can be opened"""
 
-    with Image.open(TEST_FILE_ATI2) as im:
+    with Image.open(image_path) as im:
+        im.load()
+
+        assert im.format == "DDS"
+        assert im.mode == "L"
+        assert im.size == (64, 64)
+
+        assert_image_equal_tofile(im, TEST_FILE_DX10_BC4_UNORM.replace(".dds", ".png"))
+
+
+@pytest.mark.parametrize(
+    "image_path",
+    (
+        TEST_FILE_ATI2,
+        # hexeditted to use BC5U FourCC
+        TEST_FILE_BC5U,
+    ),
+)
+def test_sanity_ati2_bc5u(image_path: str) -> None:
+    """Check ATI2 and BC5U images can be opened"""
+
+    with Image.open(image_path) as im:
         im.load()
 
         assert im.format == "DDS"
@@ -95,7 +152,7 @@ def test_sanity_ati2():
 
 
 @pytest.mark.parametrize(
-    ("image_path", "expected_path"),
+    "image_path, expected_path",
     (
         # hexeditted to be typeless
         (TEST_FILE_DX10_BC5_TYPELESS, TEST_FILE_DX10_BC5_UNORM),
@@ -105,7 +162,7 @@ def test_sanity_ati2():
         (TEST_FILE_BC5S, TEST_FILE_BC5S),
     ),
 )
-def test_dx10_bc5(image_path, expected_path):
+def test_dx10_bc5(image_path: str, expected_path: str) -> None:
     """Check DX10 BC5 images can be opened"""
 
     with Image.open(image_path) as im:
@@ -119,7 +176,7 @@ def test_dx10_bc5(image_path, expected_path):
 
 
 @pytest.mark.parametrize("image_path", (TEST_FILE_BC6H, TEST_FILE_BC6HS))
-def test_dx10_bc6h(image_path):
+def test_dx10_bc6h(image_path: str) -> None:
     """Check DX10 BC6H/BC6HS images can be opened"""
 
     with Image.open(image_path) as im:
@@ -132,7 +189,7 @@ def test_dx10_bc6h(image_path):
         assert_image_equal_tofile(im, image_path.replace(".dds", ".png"))
 
 
-def test_dx10_bc7():
+def test_dx10_bc7() -> None:
     """Check DX10 images can be opened"""
 
     with Image.open(TEST_FILE_DX10_BC7) as im:
@@ -145,7 +202,7 @@ def test_dx10_bc7():
         assert_image_equal_tofile(im, TEST_FILE_DX10_BC7.replace(".dds", ".png"))
 
 
-def test_dx10_bc7_unorm_srgb():
+def test_dx10_bc7_unorm_srgb() -> None:
     """Check DX10 unsigned normalized integer images can be opened"""
 
     with Image.open(TEST_FILE_DX10_BC7_UNORM_SRGB) as im:
@@ -161,7 +218,7 @@ def test_dx10_bc7_unorm_srgb():
         )
 
 
-def test_dx10_r8g8b8a8():
+def test_dx10_r8g8b8a8() -> None:
     """Check DX10 images can be opened"""
 
     with Image.open(TEST_FILE_DX10_R8G8B8A8) as im:
@@ -174,7 +231,7 @@ def test_dx10_r8g8b8a8():
         assert_image_equal_tofile(im, TEST_FILE_DX10_R8G8B8A8.replace(".dds", ".png"))
 
 
-def test_dx10_r8g8b8a8_unorm_srgb():
+def test_dx10_r8g8b8a8_unorm_srgb() -> None:
     """Check DX10 unsigned normalized integer images can be opened"""
 
     with Image.open(TEST_FILE_DX10_R8G8B8A8_UNORM_SRGB) as im:
@@ -190,22 +247,17 @@ def test_dx10_r8g8b8a8_unorm_srgb():
         )
 
 
-def test_unimplemented_dxgi_format():
-    with pytest.raises(NotImplementedError):
-        with Image.open("Tests/images/unimplemented_dxgi_format.dds"):
-            pass
-
-
 @pytest.mark.parametrize(
-    ("mode", "size", "test_file"),
+    "mode, size, test_file",
     [
         ("L", (128, 128), TEST_FILE_UNCOMPRESSED_L),
         ("LA", (128, 128), TEST_FILE_UNCOMPRESSED_L_WITH_ALPHA),
         ("RGB", (128, 128), TEST_FILE_UNCOMPRESSED_RGB),
+        ("RGB", (128, 128), TEST_FILE_UNCOMPRESSED_BGR15),
         ("RGBA", (800, 600), TEST_FILE_UNCOMPRESSED_RGB_WITH_ALPHA),
     ],
 )
-def test_uncompressed(mode, size, test_file):
+def test_uncompressed(mode: str, size: tuple[int, int], test_file: str) -> None:
     """Check uncompressed images can be opened"""
 
     with Image.open(test_file) as im:
@@ -216,7 +268,7 @@ def test_uncompressed(mode, size, test_file):
         assert_image_equal_tofile(im, test_file.replace(".dds", ".png"))
 
 
-def test__accept_true():
+def test__accept_true() -> None:
     """Check valid prefix"""
     # Arrange
     prefix = b"DDS etc"
@@ -228,7 +280,7 @@ def test__accept_true():
     assert output
 
 
-def test__accept_false():
+def test__accept_false() -> None:
     """Check invalid prefix"""
     # Arrange
     prefix = b"something invalid"
@@ -240,19 +292,19 @@ def test__accept_false():
     assert not output
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
         DdsImagePlugin.DdsImageFile(invalid_file)
 
 
-def test_short_header():
+def test_short_header() -> None:
     """Check a short header"""
     with open(TEST_FILE_DXT5, "rb") as f:
         img_file = f.read()
 
-    def short_header():
+    def short_header() -> None:
         with Image.open(BytesIO(img_file[:119])):
             pass  # pragma: no cover
 
@@ -260,13 +312,13 @@ def test_short_header():
         short_header()
 
 
-def test_short_file():
+def test_short_file() -> None:
     """Check that the appropriate error is thrown for a short file"""
 
     with open(TEST_FILE_DXT5, "rb") as f:
         img_file = f.read()
 
-    def short_file():
+    def short_file() -> None:
         with Image.open(BytesIO(img_file[:-100])) as im:
             im.load()
 
@@ -274,7 +326,7 @@ def test_short_file():
         short_file()
 
 
-def test_dxt5_colorblock_alpha_issue_4142():
+def test_dxt5_colorblock_alpha_issue_4142() -> None:
     """Check that colorblocks are decoded correctly in DXT5"""
 
     with Image.open("Tests/images/dxt5-colorblock-alpha-issue-4142.dds") as im:
@@ -289,13 +341,31 @@ def test_dxt5_colorblock_alpha_issue_4142():
         assert px[2] != 0
 
 
-def test_unimplemented_pixel_format():
-    with pytest.raises(NotImplementedError):
-        with Image.open("Tests/images/unimplemented_pixel_format.dds"):
+def test_palette() -> None:
+    with Image.open("Tests/images/palette.dds") as im:
+        assert_image_equal_tofile(im, "Tests/images/transparent.gif")
+
+
+def test_unsupported_bitcount() -> None:
+    with pytest.raises(OSError):
+        with Image.open("Tests/images/unsupported_bitcount.dds"):
             pass
 
 
-def test_save_unsupported_mode(tmp_path):
+@pytest.mark.parametrize(
+    "test_file",
+    (
+        "Tests/images/unimplemented_dxgi_format.dds",
+        "Tests/images/unimplemented_pfflags.dds",
+    ),
+)
+def test_not_implemented(test_file: str) -> None:
+    with pytest.raises(NotImplementedError):
+        with Image.open(test_file):
+            pass
+
+
+def test_save_unsupported_mode(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.dds")
     im = hopper("HSV")
     with pytest.raises(OSError):
@@ -303,7 +373,7 @@ def test_save_unsupported_mode(tmp_path):
 
 
 @pytest.mark.parametrize(
-    ("mode", "test_file"),
+    "mode, test_file",
     [
         ("L", "Tests/images/linear_gradient.png"),
         ("LA", "Tests/images/uncompressed_la.png"),
@@ -311,7 +381,7 @@ def test_save_unsupported_mode(tmp_path):
         ("RGBA", "Tests/images/pil123rgba.png"),
     ],
 )
-def test_save(mode, test_file, tmp_path):
+def test_save(mode: str, test_file: str, tmp_path: Path) -> None:
     out = str(tmp_path / "temp.dds")
     with Image.open(test_file) as im:
         assert im.mode == mode
diff --git a/Tests/test_file_eps.py b/Tests/test_file_eps.py
index 26adfff87..672c04a4d 100644
--- a/Tests/test_file_eps.py
+++ b/Tests/test_file_eps.py
@@ -1,13 +1,18 @@
+from __future__ import annotations
+
 import io
+from pathlib import Path
 
 import pytest
 
-from PIL import EpsImagePlugin, Image, features
+from PIL import EpsImagePlugin, Image, UnidentifiedImageError, features
 
 from .helper import (
+    assert_image_equal_tofile,
     assert_image_similar,
     assert_image_similar_tofile,
     hopper,
+    is_win32,
     mark_if_feature_version,
     skip_unless_feature,
 )
@@ -15,18 +20,18 @@ from .helper import (
 HAS_GHOSTSCRIPT = EpsImagePlugin.has_ghostscript()
 
 # Our two EPS test files (they are identical except for their bounding boxes)
-FILE1 = "Tests/images/zero_bb.eps"
-FILE2 = "Tests/images/non_zero_bb.eps"
+FILE1 = "Tests/images/eps/zero_bb.eps"
+FILE2 = "Tests/images/eps/non_zero_bb.eps"
 
 # Due to palletization, we'll need to convert these to RGB after load
-FILE1_COMPARE = "Tests/images/zero_bb.png"
-FILE1_COMPARE_SCALE2 = "Tests/images/zero_bb_scale2.png"
+FILE1_COMPARE = "Tests/images/eps/zero_bb.png"
+FILE1_COMPARE_SCALE2 = "Tests/images/eps/zero_bb_scale2.png"
 
-FILE2_COMPARE = "Tests/images/non_zero_bb.png"
-FILE2_COMPARE_SCALE2 = "Tests/images/non_zero_bb_scale2.png"
+FILE2_COMPARE = "Tests/images/eps/non_zero_bb.png"
+FILE2_COMPARE_SCALE2 = "Tests/images/eps/non_zero_bb_scale2.png"
 
 # EPS test files with binary preview
-FILE3 = "Tests/images/binary_preview_map.eps"
+FILE3 = "Tests/images/eps/binary_preview_map.eps"
 
 # Three unsigned 32bit little-endian values:
 #   0xC6D3D0C5 magic number
@@ -76,11 +81,9 @@ simple_eps_file_with_long_binary_data = (
 
 
 @pytest.mark.skipif(not HAS_GHOSTSCRIPT, reason="Ghostscript not available")
-@pytest.mark.parametrize(
-    ("filename", "size"), ((FILE1, (460, 352)), (FILE2, (360, 252)))
-)
+@pytest.mark.parametrize("filename, size", ((FILE1, (460, 352)), (FILE2, (360, 252))))
 @pytest.mark.parametrize("scale", (1, 2))
-def test_sanity(filename, size, scale):
+def test_sanity(filename: str, size: tuple[int, int], scale: int) -> None:
     expected_size = tuple(s * scale for s in size)
     with Image.open(filename) as image:
         image.load(scale=scale)
@@ -90,7 +93,7 @@ def test_sanity(filename, size, scale):
 
 
 @pytest.mark.skipif(not HAS_GHOSTSCRIPT, reason="Ghostscript not available")
-def test_load():
+def test_load() -> None:
     with Image.open(FILE1) as im:
         assert im.load()[0, 0] == (255, 255, 255)
 
@@ -98,44 +101,35 @@ def test_load():
         assert im.load()[0, 0] == (255, 255, 255)
 
 
-def test_invalid_file():
+def test_binary() -> None:
+    if HAS_GHOSTSCRIPT:
+        assert EpsImagePlugin.gs_binary is not None
+    else:
+        assert EpsImagePlugin.gs_binary is False
+
+    if not is_win32():
+        assert EpsImagePlugin.gs_windows_binary is None
+    elif not HAS_GHOSTSCRIPT:
+        assert EpsImagePlugin.gs_windows_binary is False
+    else:
+        assert EpsImagePlugin.gs_windows_binary is not None
+
+
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
     with pytest.raises(SyntaxError):
         EpsImagePlugin.EpsImageFile(invalid_file)
 
 
-def test_binary_header_only():
+def test_binary_header_only() -> None:
     data = io.BytesIO(simple_binary_header)
     with pytest.raises(SyntaxError, match='EPS header missing "%!PS-Adobe" comment'):
         EpsImagePlugin.EpsImageFile(data)
 
 
 @pytest.mark.parametrize("prefix", (b"", simple_binary_header))
-def test_missing_version_comment(prefix):
-    data = io.BytesIO(prefix + b"\n".join(simple_eps_file_without_version))
-    with pytest.raises(SyntaxError):
-        EpsImagePlugin.EpsImageFile(data)
-
-
-@pytest.mark.parametrize("prefix", (b"", simple_binary_header))
-def test_missing_boundingbox_comment(prefix):
-    data = io.BytesIO(prefix + b"\n".join(simple_eps_file_without_boundingbox))
-    with pytest.raises(SyntaxError, match='EPS header missing "%%BoundingBox" comment'):
-        EpsImagePlugin.EpsImageFile(data)
-
-
-@pytest.mark.parametrize("prefix", (b"", simple_binary_header))
-def test_invalid_boundingbox_comment(prefix):
-    data = io.BytesIO(prefix + b"\n".join(simple_eps_file_with_invalid_boundingbox))
-    with pytest.raises(OSError, match="cannot determine EPS bounding box"):
-        EpsImagePlugin.EpsImageFile(data)
-
-
-@pytest.mark.parametrize("prefix", (b"", simple_binary_header))
-def test_invalid_boundingbox_comment_valid_imagedata_comment(prefix):
-    data = io.BytesIO(
-        prefix + b"\n".join(simple_eps_file_with_invalid_boundingbox_valid_imagedata)
-    )
+def test_simple_eps_file(prefix: bytes) -> None:
+    data = io.BytesIO(prefix + b"\n".join(simple_eps_file))
     with Image.open(data) as img:
         assert img.mode == "RGB"
         assert img.size == (100, 100)
@@ -143,25 +137,55 @@ def test_invalid_boundingbox_comment_valid_imagedata_comment(prefix):
 
 
 @pytest.mark.parametrize("prefix", (b"", simple_binary_header))
-def test_ascii_comment_too_long(prefix):
+def test_missing_version_comment(prefix: bytes) -> None:
+    data = io.BytesIO(prefix + b"\n".join(simple_eps_file_without_version))
+    with pytest.raises(SyntaxError):
+        EpsImagePlugin.EpsImageFile(data)
+
+
+@pytest.mark.parametrize("prefix", (b"", simple_binary_header))
+def test_missing_boundingbox_comment(prefix: bytes) -> None:
+    data = io.BytesIO(prefix + b"\n".join(simple_eps_file_without_boundingbox))
+    with pytest.raises(SyntaxError, match='EPS header missing "%%BoundingBox" comment'):
+        EpsImagePlugin.EpsImageFile(data)
+
+
+@pytest.mark.parametrize("prefix", (b"", simple_binary_header))
+@pytest.mark.parametrize(
+    "file_lines",
+    (
+        simple_eps_file_with_invalid_boundingbox,
+        simple_eps_file_with_invalid_boundingbox_valid_imagedata,
+    ),
+)
+def test_invalid_boundingbox_comment(
+    prefix: bytes, file_lines: tuple[bytes, ...]
+) -> None:
+    data = io.BytesIO(prefix + b"\n".join(file_lines))
+    with pytest.raises(OSError, match="cannot determine EPS bounding box"):
+        EpsImagePlugin.EpsImageFile(data)
+
+
+@pytest.mark.parametrize("prefix", (b"", simple_binary_header))
+def test_ascii_comment_too_long(prefix: bytes) -> None:
     data = io.BytesIO(prefix + b"\n".join(simple_eps_file_with_long_ascii_comment))
     with pytest.raises(SyntaxError, match="not an EPS file"):
         EpsImagePlugin.EpsImageFile(data)
 
 
 @pytest.mark.parametrize("prefix", (b"", simple_binary_header))
-def test_long_binary_data(prefix):
+def test_long_binary_data(prefix: bytes) -> None:
     data = io.BytesIO(prefix + b"\n".join(simple_eps_file_with_long_binary_data))
     EpsImagePlugin.EpsImageFile(data)
 
 
 @pytest.mark.skipif(not HAS_GHOSTSCRIPT, reason="Ghostscript not available")
 @pytest.mark.parametrize("prefix", (b"", simple_binary_header))
-def test_load_long_binary_data(prefix):
+def test_load_long_binary_data(prefix: bytes) -> None:
     data = io.BytesIO(prefix + b"\n".join(simple_eps_file_with_long_binary_data))
     with Image.open(data) as img:
         img.load()
-        assert img.mode == "RGB"
+        assert img.mode == "1"
         assert img.size == (100, 100)
         assert img.format == "EPS"
 
@@ -170,8 +194,8 @@ def test_load_long_binary_data(prefix):
     pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
 )
 @pytest.mark.skipif(not HAS_GHOSTSCRIPT, reason="Ghostscript not available")
-def test_cmyk():
-    with Image.open("Tests/images/pil_sample_cmyk.eps") as cmyk_image:
+def test_cmyk() -> None:
+    with Image.open("Tests/images/eps/pil_sample_cmyk.eps") as cmyk_image:
         assert cmyk_image.mode == "CMYK"
         assert cmyk_image.size == (100, 100)
         assert cmyk_image.format == "EPS"
@@ -186,10 +210,10 @@ def test_cmyk():
 
 
 @pytest.mark.skipif(not HAS_GHOSTSCRIPT, reason="Ghostscript not available")
-def test_showpage():
+def test_showpage() -> None:
     # See https://github.com/python-pillow/Pillow/issues/2615
-    with Image.open("Tests/images/reqd_showpage.eps") as plot_image:
-        with Image.open("Tests/images/reqd_showpage.png") as target:
+    with Image.open("Tests/images/eps/reqd_showpage.eps") as plot_image:
+        with Image.open("Tests/images/eps/reqd_showpage.png") as target:
             # should not crash/hang
             plot_image.load()
             # fonts could be slightly different
@@ -197,18 +221,18 @@ def test_showpage():
 
 
 @pytest.mark.skipif(not HAS_GHOSTSCRIPT, reason="Ghostscript not available")
-def test_transparency():
-    with Image.open("Tests/images/reqd_showpage.eps") as plot_image:
+def test_transparency() -> None:
+    with Image.open("Tests/images/eps/reqd_showpage.eps") as plot_image:
         plot_image.load(transparency=True)
         assert plot_image.mode == "RGBA"
 
-        with Image.open("Tests/images/reqd_showpage_transparency.png") as target:
+        with Image.open("Tests/images/eps/reqd_showpage_transparency.png") as target:
             # fonts could be slightly different
             assert_image_similar(plot_image, target, 6)
 
 
 @pytest.mark.skipif(not HAS_GHOSTSCRIPT, reason="Ghostscript not available")
-def test_file_object(tmp_path):
+def test_file_object(tmp_path: Path) -> None:
     # issue 479
     with Image.open(FILE1) as image1:
         with open(str(tmp_path / "temp.eps"), "wb") as fh:
@@ -216,7 +240,7 @@ def test_file_object(tmp_path):
 
 
 @pytest.mark.skipif(not HAS_GHOSTSCRIPT, reason="Ghostscript not available")
-def test_bytesio_object():
+def test_bytesio_object() -> None:
     with open(FILE1, "rb") as f:
         img_bytes = io.BytesIO(f.read())
 
@@ -229,12 +253,22 @@ def test_bytesio_object():
         assert_image_similar(img, image1_scale1_compare, 5)
 
 
-def test_1_mode():
-    with Image.open("Tests/images/1.eps") as im:
-        assert im.mode == "1"
+@pytest.mark.skipif(not HAS_GHOSTSCRIPT, reason="Ghostscript not available")
+@pytest.mark.parametrize(
+    # These images have an "ImageData" descriptor.
+    "filename",
+    (
+        "Tests/images/eps/1.eps",
+        "Tests/images/eps/1_boundingbox_after_imagedata.eps",
+        "Tests/images/eps/1_second_imagedata.eps",
+    ),
+)
+def test_1(filename: str) -> None:
+    with Image.open(filename) as im:
+        assert_image_equal_tofile(im, "Tests/images/eps/1.bmp")
 
 
-def test_image_mode_not_supported(tmp_path):
+def test_image_mode_not_supported(tmp_path: Path) -> None:
     im = hopper("RGBA")
     tmpfile = str(tmp_path / "temp.eps")
     with pytest.raises(ValueError):
@@ -243,7 +277,7 @@ def test_image_mode_not_supported(tmp_path):
 
 @pytest.mark.skipif(not HAS_GHOSTSCRIPT, reason="Ghostscript not available")
 @skip_unless_feature("zlib")
-def test_render_scale1():
+def test_render_scale1() -> None:
     # We need png support for these render test
 
     # Zero bounding box
@@ -254,7 +288,7 @@ def test_render_scale1():
         image1_scale1_compare.load()
         assert_image_similar(image1_scale1, image1_scale1_compare, 5)
 
-    # Non-Zero bounding box
+    # Non-zero bounding box
     with Image.open(FILE2) as image2_scale1:
         image2_scale1.load()
         with Image.open(FILE2_COMPARE) as image2_scale1_compare:
@@ -265,7 +299,7 @@ def test_render_scale1():
 
 @pytest.mark.skipif(not HAS_GHOSTSCRIPT, reason="Ghostscript not available")
 @skip_unless_feature("zlib")
-def test_render_scale2():
+def test_render_scale2() -> None:
     # We need png support for these render test
 
     # Zero bounding box
@@ -276,7 +310,7 @@ def test_render_scale2():
         image1_scale2_compare.load()
         assert_image_similar(image1_scale2, image1_scale2_compare, 5)
 
-    # Non-Zero bounding box
+    # Non-zero bounding box
     with Image.open(FILE2) as image2_scale2:
         image2_scale2.load(scale=2)
         with Image.open(FILE2_COMPARE_SCALE2) as image2_scale2_compare:
@@ -286,8 +320,10 @@ def test_render_scale2():
 
 
 @pytest.mark.skipif(not HAS_GHOSTSCRIPT, reason="Ghostscript not available")
-@pytest.mark.parametrize("filename", (FILE1, FILE2, "Tests/images/illu10_preview.eps"))
-def test_resize(filename):
+@pytest.mark.parametrize(
+    "filename", (FILE1, FILE2, "Tests/images/eps/illu10_preview.eps")
+)
+def test_resize(filename: str) -> None:
     with Image.open(filename) as im:
         new_size = (100, 100)
         im = im.resize(new_size)
@@ -296,7 +332,7 @@ def test_resize(filename):
 
 @pytest.mark.skipif(not HAS_GHOSTSCRIPT, reason="Ghostscript not available")
 @pytest.mark.parametrize("filename", (FILE1, FILE2))
-def test_thumbnail(filename):
+def test_thumbnail(filename: str) -> None:
     # Issue #619
     with Image.open(filename) as im:
         new_size = (100, 100)
@@ -304,61 +340,19 @@ def test_thumbnail(filename):
         assert max(im.size) == max(new_size)
 
 
-def test_read_binary_preview():
+def test_read_binary_preview() -> None:
     # Issue 302
     # open image with binary preview
     with Image.open(FILE3):
         pass
 
 
-def test_readline_psfile(tmp_path):
-    # check all the freaking line endings possible from the spec
-    # test_string = u'something\r\nelse\n\rbaz\rbif\n'
-    line_endings = ["\r\n", "\n", "\n\r", "\r"]
-    strings = ["something", "else", "baz", "bif"]
-
-    def _test_readline(t, ending):
-        ending = "Failure with line ending: %s" % (
-            "".join("%s" % ord(s) for s in ending)
-        )
-        assert t.readline().strip("\r\n") == "something", ending
-        assert t.readline().strip("\r\n") == "else", ending
-        assert t.readline().strip("\r\n") == "baz", ending
-        assert t.readline().strip("\r\n") == "bif", ending
-
-    def _test_readline_io_psfile(test_string, ending):
-        f = io.BytesIO(test_string.encode("latin-1"))
-        with pytest.warns(DeprecationWarning):
-            t = EpsImagePlugin.PSFile(f)
-        _test_readline(t, ending)
-
-    def _test_readline_file_psfile(test_string, ending):
-        f = str(tmp_path / "temp.txt")
-        with open(f, "wb") as w:
-            w.write(test_string.encode("latin-1"))
-
-        with open(f, "rb") as r:
-            with pytest.warns(DeprecationWarning):
-                t = EpsImagePlugin.PSFile(r)
-            _test_readline(t, ending)
-
-    for ending in line_endings:
-        s = ending.join(strings)
-        _test_readline_io_psfile(s, ending)
-        _test_readline_file_psfile(s, ending)
-
-
-def test_psfile_deprecation():
-    with pytest.warns(DeprecationWarning):
-        EpsImagePlugin.PSFile(None)
-
-
 @pytest.mark.parametrize("prefix", (b"", simple_binary_header))
 @pytest.mark.parametrize(
     "line_ending",
     (b"\r\n", b"\n", b"\n\r", b"\r"),
 )
-def test_readline(prefix, line_ending):
+def test_readline(prefix: bytes, line_ending: bytes) -> None:
     simple_file = prefix + line_ending.join(simple_eps_file_with_comments)
     data = io.BytesIO(simple_file)
     test_file = EpsImagePlugin.EpsImageFile(data)
@@ -370,22 +364,22 @@ def test_readline(prefix, line_ending):
 @pytest.mark.parametrize(
     "filename",
     (
-        "Tests/images/illu10_no_preview.eps",
-        "Tests/images/illu10_preview.eps",
-        "Tests/images/illuCS6_no_preview.eps",
-        "Tests/images/illuCS6_preview.eps",
+        "Tests/images/eps/illu10_no_preview.eps",
+        "Tests/images/eps/illu10_preview.eps",
+        "Tests/images/eps/illuCS6_no_preview.eps",
+        "Tests/images/eps/illuCS6_preview.eps",
     ),
 )
-def test_open_eps(filename):
+def test_open_eps(filename: str) -> None:
     # https://github.com/python-pillow/Pillow/issues/1104
     with Image.open(filename) as img:
         assert img.mode == "RGB"
 
 
 @pytest.mark.skipif(not HAS_GHOSTSCRIPT, reason="Ghostscript not available")
-def test_emptyline():
+def test_emptyline() -> None:
     # Test file includes an empty line in the header data
-    emptyline_file = "Tests/images/zero_bb_emptyline.eps"
+    emptyline_file = "Tests/images/eps/zero_bb_emptyline.eps"
 
     with Image.open(emptyline_file) as image:
         image.load()
@@ -397,10 +391,34 @@ def test_emptyline():
 @pytest.mark.timeout(timeout=5)
 @pytest.mark.parametrize(
     "test_file",
-    ["Tests/images/timeout-d675703545fee17acab56e5fec644c19979175de.eps"],
+    ["Tests/images/eps/timeout-d675703545fee17acab56e5fec644c19979175de.eps"],
 )
-def test_timeout(test_file):
+def test_timeout(test_file: str) -> None:
     with open(test_file, "rb") as f:
-        with pytest.raises(Image.UnidentifiedImageError):
+        with pytest.raises(UnidentifiedImageError):
             with Image.open(f):
                 pass
+
+
+def test_bounding_box_in_trailer() -> None:
+    # Check bounding boxes are parsed in the same way
+    # when specified in the header and the trailer
+    with (
+        Image.open("Tests/images/eps/zero_bb_trailer.eps") as trailer_image,
+        Image.open(FILE1) as header_image,
+    ):
+        assert trailer_image.size == header_image.size
+
+
+def test_eof_before_bounding_box() -> None:
+    with pytest.raises(OSError):
+        with Image.open("Tests/images/eps/zero_bb_eof_before_boundingbox.eps"):
+            pass
+
+
+def test_invalid_data_after_eof() -> None:
+    with open("Tests/images/eps/illuCS6_preview.eps", "rb") as f:
+        img_bytes = io.BytesIO(f.read() + b"\r\n%" + (b" " * 255))
+
+    with Image.open(img_bytes) as img:
+        assert img.mode == "RGB"
diff --git a/Tests/test_file_fits.py b/Tests/test_file_fits.py
index 68b3eb567..1c1df0d98 100644
--- a/Tests/test_file_fits.py
+++ b/Tests/test_file_fits.py
@@ -1,15 +1,17 @@
+from __future__ import annotations
+
 from io import BytesIO
 
 import pytest
 
 from PIL import FitsImagePlugin, Image
 
-from .helper import assert_image_equal, hopper
+from .helper import assert_image_equal, assert_image_equal_tofile, hopper
 
 TEST_FILE = "Tests/images/hopper.fits"
 
 
-def test_open():
+def test_open() -> None:
     # Act
     with Image.open(TEST_FILE) as im:
         # Assert
@@ -20,7 +22,12 @@ def test_open():
         assert_image_equal(im, hopper("L"))
 
 
-def test_invalid_file():
+def test_gzip1() -> None:
+    with Image.open("Tests/images/m13_gzip.fits") as im:
+        assert_image_equal_tofile(im, "Tests/images/m13.fits")
+
+
+def test_invalid_file() -> None:
     # Arrange
     invalid_file = "Tests/images/flower.jpg"
 
@@ -29,14 +36,14 @@ def test_invalid_file():
         FitsImagePlugin.FitsImageFile(invalid_file)
 
 
-def test_truncated_fits():
+def test_truncated_fits() -> None:
     # No END to headers
     image_data = b"SIMPLE  =                    T" + b" " * 50 + b"TRUNCATE"
     with pytest.raises(OSError):
         FitsImagePlugin.FitsImageFile(BytesIO(image_data))
 
 
-def test_naxis_zero():
+def test_naxis_zero() -> None:
     # This test image has been manually hexedited
     # to set the number of data axes to zero
     with pytest.raises(ValueError):
@@ -44,7 +51,7 @@ def test_naxis_zero():
             pass
 
 
-def test_comment():
+def test_comment() -> None:
     image_data = b"SIMPLE  =                    T / comment string"
     with pytest.raises(OSError):
         FitsImagePlugin.FitsImageFile(BytesIO(image_data))
diff --git a/Tests/test_file_fli.py b/Tests/test_file_fli.py
index f96afdc95..0a7740cc8 100644
--- a/Tests/test_file_fli.py
+++ b/Tests/test_file_fli.py
@@ -1,8 +1,10 @@
+from __future__ import annotations
+
 import warnings
 
 import pytest
 
-from PIL import FliImagePlugin, Image
+from PIL import FliImagePlugin, Image, ImageFile
 
 from .helper import assert_image_equal, assert_image_equal_tofile, is_pypy
 
@@ -10,11 +12,14 @@ from .helper import assert_image_equal, assert_image_equal_tofile, is_pypy
 # save as...-> hopper.fli, default options.
 static_test_file = "Tests/images/hopper.fli"
 
-# From https://samples.libav.org/fli-flc/
+# From https://samples.ffmpeg.org/fli-flc/
 animated_test_file = "Tests/images/a.fli"
 
+# From https://samples.ffmpeg.org/fli-flc/
+animated_test_file_with_prefix_chunk = "Tests/images/2422.flc"
 
-def test_sanity():
+
+def test_sanity() -> None:
     with Image.open(static_test_file) as im:
         im.load()
         assert im.mode == "P"
@@ -30,9 +35,27 @@ def test_sanity():
         assert im.is_animated
 
 
+def test_prefix_chunk() -> None:
+    ImageFile.LOAD_TRUNCATED_IMAGES = True
+    try:
+        with Image.open(animated_test_file_with_prefix_chunk) as im:
+            assert im.mode == "P"
+            assert im.size == (320, 200)
+            assert im.format == "FLI"
+            assert im.info["duration"] == 171
+            assert im.is_animated
+
+            palette = im.getpalette()
+            assert palette[3:6] == [255, 255, 255]
+            assert palette[381:384] == [204, 204, 12]
+            assert palette[765:] == [252, 0, 0]
+    finally:
+        ImageFile.LOAD_TRUNCATED_IMAGES = False
+
+
 @pytest.mark.skipif(is_pypy(), reason="Requires CPython")
-def test_unclosed_file():
-    def open():
+def test_unclosed_file() -> None:
+    def open() -> None:
         im = Image.open(static_test_file)
         im.load()
 
@@ -40,14 +63,16 @@ def test_unclosed_file():
         open()
 
 
-def test_closed_file():
+def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         im = Image.open(static_test_file)
         im.load()
         im.close()
 
 
-def test_seek_after_close():
+def test_seek_after_close() -> None:
     im = Image.open(animated_test_file)
     im.seek(1)
     im.close()
@@ -56,13 +81,15 @@ def test_seek_after_close():
         im.seek(0)
 
 
-def test_context_manager():
+def test_context_manager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with Image.open(static_test_file) as im:
             im.load()
 
 
-def test_tell():
+def test_tell() -> None:
     # Arrange
     with Image.open(static_test_file) as im:
         # Act
@@ -72,20 +99,20 @@ def test_tell():
         assert frame == 0
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
         FliImagePlugin.FliImageFile(invalid_file)
 
 
-def test_palette_chunk_second():
+def test_palette_chunk_second() -> None:
     with Image.open("Tests/images/hopper_palette_chunk_second.fli") as im:
         with Image.open(static_test_file) as expected:
             assert_image_equal(im.convert("RGB"), expected.convert("RGB"))
 
 
-def test_n_frames():
+def test_n_frames() -> None:
     with Image.open(static_test_file) as im:
         assert im.n_frames == 1
         assert not im.is_animated
@@ -95,7 +122,7 @@ def test_n_frames():
         assert im.is_animated
 
 
-def test_eoferror():
+def test_eoferror() -> None:
     with Image.open(animated_test_file) as im:
         n_frames = im.n_frames
 
@@ -108,7 +135,7 @@ def test_eoferror():
         im.seek(n_frames - 1)
 
 
-def test_seek_tell():
+def test_seek_tell() -> None:
     with Image.open(animated_test_file) as im:
         layer_number = im.tell()
         assert layer_number == 0
@@ -130,7 +157,7 @@ def test_seek_tell():
         assert layer_number == 1
 
 
-def test_seek():
+def test_seek() -> None:
     with Image.open(animated_test_file) as im:
         im.seek(50)
 
@@ -145,7 +172,7 @@ def test_seek():
     ],
 )
 @pytest.mark.timeout(timeout=3)
-def test_timeouts(test_file):
+def test_timeouts(test_file: str) -> None:
     with open(test_file, "rb") as f:
         with Image.open(f) as im:
             with pytest.raises(OSError):
@@ -158,7 +185,7 @@ def test_timeouts(test_file):
         "Tests/images/crash-5762152299364352.fli",
     ],
 )
-def test_crash(test_file):
+def test_crash(test_file: str) -> None:
     with open(test_file, "rb") as f:
         with Image.open(f) as im:
             with pytest.raises(OSError):
diff --git a/Tests/test_file_fpx.py b/Tests/test_file_fpx.py
index 9a1784d31..e32f30a01 100644
--- a/Tests/test_file_fpx.py
+++ b/Tests/test_file_fpx.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image
@@ -9,7 +11,7 @@ FpxImagePlugin = pytest.importorskip(
 )
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open("Tests/images/input_bw_one_band.fpx") as im:
         assert im.mode == "L"
         assert im.size == (70, 46)
@@ -18,7 +20,7 @@ def test_sanity():
         assert_image_equal_tofile(im, "Tests/images/input_bw_one_band.png")
 
 
-def test_close():
+def test_close() -> None:
     with Image.open("Tests/images/input_bw_one_band.fpx") as im:
         pass
     assert im.ole.fp.closed
@@ -28,7 +30,7 @@ def test_close():
     assert im.ole.fp.closed
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     # Test an invalid OLE file
     invalid_file = "Tests/images/flower.jpg"
     with pytest.raises(SyntaxError):
@@ -40,7 +42,7 @@ def test_invalid_file():
         FpxImagePlugin.FpxImageFile(ole_file)
 
 
-def test_fpx_invalid_number_of_bands():
+def test_fpx_invalid_number_of_bands() -> None:
     with pytest.raises(OSError, match="Invalid number of bands"):
         with Image.open("Tests/images/input_bw_five_bands.fpx"):
             pass
diff --git a/Tests/test_file_ftex.py b/Tests/test_file_ftex.py
index ac6253db0..0c544245a 100644
--- a/Tests/test_file_ftex.py
+++ b/Tests/test_file_ftex.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import FtexImagePlugin, Image
@@ -5,18 +7,18 @@ from PIL import FtexImagePlugin, Image
 from .helper import assert_image_equal_tofile, assert_image_similar
 
 
-def test_load_raw():
+def test_load_raw() -> None:
     with Image.open("Tests/images/ftex_uncompressed.ftu") as im:
         assert_image_equal_tofile(im, "Tests/images/ftex_uncompressed.png")
 
 
-def test_load_dxt1():
+def test_load_dxt1() -> None:
     with Image.open("Tests/images/ftex_dxt1.ftc") as im:
         with Image.open("Tests/images/ftex_dxt1.png") as target:
             assert_image_similar(im, target.convert("RGBA"), 15)
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
diff --git a/Tests/test_file_gbr.py b/Tests/test_file_gbr.py
index 1ea8af8ee..be98b08f2 100644
--- a/Tests/test_file_gbr.py
+++ b/Tests/test_file_gbr.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import GbrImagePlugin, Image
@@ -5,12 +7,12 @@ from PIL import GbrImagePlugin, Image
 from .helper import assert_image_equal_tofile
 
 
-def test_gbr_file():
+def test_gbr_file() -> None:
     with Image.open("Tests/images/gbr.gbr") as im:
         assert_image_equal_tofile(im, "Tests/images/gbr.png")
 
 
-def test_load():
+def test_load() -> None:
     with Image.open("Tests/images/gbr.gbr") as im:
         assert im.load()[0, 0] == (0, 0, 0, 0)
 
@@ -18,14 +20,14 @@ def test_load():
         assert im.load()[0, 0] == (0, 0, 0, 0)
 
 
-def test_multiple_load_operations():
+def test_multiple_load_operations() -> None:
     with Image.open("Tests/images/gbr.gbr") as im:
         im.load()
         im.load()
         assert_image_equal_tofile(im, "Tests/images/gbr.png")
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
diff --git a/Tests/test_file_gd.py b/Tests/test_file_gd.py
index 5594e5bbb..d512df284 100644
--- a/Tests/test_file_gd.py
+++ b/Tests/test_file_gd.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import GdImageFile, UnidentifiedImageError
@@ -5,18 +7,18 @@ from PIL import GdImageFile, UnidentifiedImageError
 TEST_GD_FILE = "Tests/images/hopper.gd"
 
 
-def test_sanity():
+def test_sanity() -> None:
     with GdImageFile.open(TEST_GD_FILE) as im:
         assert im.size == (128, 128)
         assert im.format == "GD"
 
 
-def test_bad_mode():
+def test_bad_mode() -> None:
     with pytest.raises(ValueError):
         GdImageFile.open(TEST_GD_FILE, "bad mode")
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(UnidentifiedImageError):
diff --git a/Tests/test_file_gif.py b/Tests/test_file_gif.py
index 0e50ee1ab..248347d5b 100644
--- a/Tests/test_file_gif.py
+++ b/Tests/test_file_gif.py
@@ -1,5 +1,9 @@
+from __future__ import annotations
+
 import warnings
+from collections.abc import Generator
 from io import BytesIO
+from pathlib import Path
 
 import pytest
 
@@ -21,7 +25,7 @@ with open(TEST_GIF, "rb") as f:
     data = f.read()
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open(TEST_GIF) as im:
         im.load()
         assert im.mode == "P"
@@ -31,8 +35,8 @@ def test_sanity():
 
 
 @pytest.mark.skipif(is_pypy(), reason="Requires CPython")
-def test_unclosed_file():
-    def open():
+def test_unclosed_file() -> None:
+    def open() -> None:
         im = Image.open(TEST_GIF)
         im.load()
 
@@ -40,15 +44,18 @@ def test_unclosed_file():
         open()
 
 
-def test_closed_file():
+def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         im = Image.open(TEST_GIF)
         im.load()
         im.close()
 
 
-def test_seek_after_close():
+def test_seek_after_close() -> None:
     im = Image.open("Tests/images/iss634.gif")
+    assert isinstance(im, GifImagePlugin.GifImageFile)
     im.load()
     im.close()
 
@@ -60,20 +67,22 @@ def test_seek_after_close():
         im.seek(1)
 
 
-def test_context_manager():
+def test_context_manager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with Image.open(TEST_GIF) as im:
             im.load()
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
         GifImagePlugin.GifImageFile(invalid_file)
 
 
-def test_l_mode_transparency():
+def test_l_mode_transparency() -> None:
     with Image.open("Tests/images/no_palette_with_transparency.gif") as im:
         assert im.mode == "L"
         assert im.load()[0, 0] == 128
@@ -84,7 +93,7 @@ def test_l_mode_transparency():
         assert im.load()[0, 0] == 128
 
 
-def test_l_mode_after_rgb():
+def test_l_mode_after_rgb() -> None:
     with Image.open("Tests/images/no_palette_after_rgb.gif") as im:
         im.seek(1)
         assert im.mode == "RGB"
@@ -93,13 +102,13 @@ def test_l_mode_after_rgb():
         assert im.mode == "RGB"
 
 
-def test_palette_not_needed_for_second_frame():
+def test_palette_not_needed_for_second_frame() -> None:
     with Image.open("Tests/images/palette_not_needed_for_second_frame.gif") as im:
         im.seek(1)
         assert_image_similar(im, hopper("L").convert("RGB"), 8)
 
 
-def test_strategy():
+def test_strategy() -> None:
     with Image.open("Tests/images/iss634.gif") as im:
         expected_rgb_always = im.convert("RGB")
 
@@ -140,14 +149,14 @@ def test_strategy():
         GifImagePlugin.LOADING_STRATEGY = GifImagePlugin.LoadingStrategy.RGB_AFTER_FIRST
 
 
-def test_optimize():
-    def test_grayscale(optimize):
+def test_optimize() -> None:
+    def test_grayscale(optimize: int) -> int:
         im = Image.new("L", (1, 1), 0)
         filename = BytesIO()
         im.save(filename, "GIF", optimize=optimize)
         return len(filename.getvalue())
 
-    def test_bilevel(optimize):
+    def test_bilevel(optimize: int) -> int:
         im = Image.new("1", (1, 1), 0)
         test_file = BytesIO()
         im.save(test_file, "GIF", optimize=optimize)
@@ -175,7 +184,9 @@ def test_optimize():
         (4, 513, 256),
     ),
 )
-def test_optimize_correctness(colors, size, expected_palette_length):
+def test_optimize_correctness(
+    colors: int, size: int, expected_palette_length: int
+) -> None:
     # 256 color Palette image, posterize to > 128 and < 128 levels.
     # Size bigger and smaller than 512x512.
     # Check the palette for number of colors allocated.
@@ -197,27 +208,48 @@ def test_optimize_correctness(colors, size, expected_palette_length):
         assert_image_equal(im.convert("RGB"), reloaded.convert("RGB"))
 
 
-def test_optimize_full_l():
+def test_optimize_full_l() -> None:
     im = Image.frombytes("L", (16, 16), bytes(range(256)))
     test_file = BytesIO()
     im.save(test_file, "GIF", optimize=True)
     assert im.mode == "L"
 
 
-def test_optimize_if_palette_can_be_reduced_by_half():
-    with Image.open("Tests/images/test.colors.gif") as im:
-        # Reduce dimensions because original is too big for _get_optimize()
-        im = im.resize((591, 443))
-    im_rgb = im.convert("RGB")
+def test_optimize_if_palette_can_be_reduced_by_half() -> None:
+    im = Image.new("P", (8, 1))
+    im.palette = ImagePalette.raw("RGB", bytes((0, 0, 0) * 150))
+    for i in range(8):
+        im.putpixel((i, 0), (i + 1, 0, 0))
 
     for optimize, colors in ((False, 256), (True, 8)):
         out = BytesIO()
-        im_rgb.save(out, "GIF", optimize=optimize)
+        im.save(out, "GIF", optimize=optimize)
         with Image.open(out) as reloaded:
             assert len(reloaded.palette.palette) // 3 == colors
 
 
-def test_roundtrip(tmp_path):
+def test_full_palette_second_frame(tmp_path: Path) -> None:
+    out = str(tmp_path / "temp.gif")
+    im = Image.new("P", (1, 256))
+
+    full_palette_im = Image.new("P", (1, 256))
+    for i in range(256):
+        full_palette_im.putpixel((0, i), i)
+    full_palette_im.palette = ImagePalette.ImagePalette(
+        "RGB", bytearray(i // 3 for i in range(768))
+    )
+    full_palette_im.palette.dirty = 1
+
+    im.save(out, save_all=True, append_images=[full_palette_im])
+
+    with Image.open(out) as reloaded:
+        reloaded.seek(1)
+
+        for i in range(256):
+            reloaded.getpixel((0, i)) == i
+
+
+def test_roundtrip(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
     im = hopper()
     im.save(out)
@@ -225,7 +257,7 @@ def test_roundtrip(tmp_path):
         assert_image_similar(reread.convert("RGB"), im, 50)
 
 
-def test_roundtrip2(tmp_path):
+def test_roundtrip2(tmp_path: Path) -> None:
     # see https://github.com/python-pillow/Pillow/issues/403
     out = str(tmp_path / "temp.gif")
     with Image.open(TEST_GIF) as im:
@@ -235,7 +267,7 @@ def test_roundtrip2(tmp_path):
         assert_image_similar(reread.convert("RGB"), hopper(), 50)
 
 
-def test_roundtrip_save_all(tmp_path):
+def test_roundtrip_save_all(tmp_path: Path) -> None:
     # Single frame image
     out = str(tmp_path / "temp.gif")
     im = hopper()
@@ -252,7 +284,7 @@ def test_roundtrip_save_all(tmp_path):
         assert reread.n_frames == 5
 
 
-def test_roundtrip_save_all_1(tmp_path):
+def test_roundtrip_save_all_1(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
     im = Image.new("1", (1, 1))
     im2 = Image.new("1", (1, 1), 1)
@@ -273,7 +305,7 @@ def test_roundtrip_save_all_1(tmp_path):
         ("Tests/images/dispose_bgnd_rgba.gif", "RGBA"),
     ),
 )
-def test_loading_multiple_palettes(path, mode):
+def test_loading_multiple_palettes(path: str, mode: str) -> None:
     with Image.open(path) as im:
         assert im.mode == "P"
         first_frame_colors = im.palette.colors.keys()
@@ -291,7 +323,7 @@ def test_loading_multiple_palettes(path, mode):
         assert im.load()[24, 24] not in first_frame_colors
 
 
-def test_headers_saving_for_animated_gifs(tmp_path):
+def test_headers_saving_for_animated_gifs(tmp_path: Path) -> None:
     important_headers = ["background", "version", "duration", "loop"]
     # Multiframe image
     with Image.open("Tests/images/dispose_bgnd.gif") as im:
@@ -304,7 +336,7 @@ def test_headers_saving_for_animated_gifs(tmp_path):
             assert info[header] == reread.info[header]
 
 
-def test_palette_handling(tmp_path):
+def test_palette_handling(tmp_path: Path) -> None:
     # see https://github.com/python-pillow/Pillow/issues/513
 
     with Image.open(TEST_GIF) as im:
@@ -320,12 +352,12 @@ def test_palette_handling(tmp_path):
         assert_image_similar(im, reloaded.convert("RGB"), 10)
 
 
-def test_palette_434(tmp_path):
+def test_palette_434(tmp_path: Path) -> None:
     # see https://github.com/python-pillow/Pillow/issues/434
 
-    def roundtrip(im, *args, **kwargs):
+    def roundtrip(im: Image.Image, **kwargs: bool) -> Image.Image:
         out = str(tmp_path / "temp.gif")
-        im.copy().save(out, *args, **kwargs)
+        im.copy().save(out, "GIF", **kwargs)
         reloaded = Image.open(out)
 
         return reloaded
@@ -345,28 +377,30 @@ def test_palette_434(tmp_path):
 
 
 @pytest.mark.skipif(not netpbm_available(), reason="Netpbm not available")
-def test_save_netpbm_bmp_mode(tmp_path):
+def test_save_netpbm_bmp_mode(tmp_path: Path) -> None:
     with Image.open(TEST_GIF) as img:
         img = img.convert("RGB")
 
         tempfile = str(tmp_path / "temp.gif")
-        GifImagePlugin._save_netpbm(img, 0, tempfile)
+        b = BytesIO()
+        GifImagePlugin._save_netpbm(img, b, tempfile)
         with Image.open(tempfile) as reloaded:
             assert_image_similar(img, reloaded.convert("RGB"), 0)
 
 
 @pytest.mark.skipif(not netpbm_available(), reason="Netpbm not available")
-def test_save_netpbm_l_mode(tmp_path):
+def test_save_netpbm_l_mode(tmp_path: Path) -> None:
     with Image.open(TEST_GIF) as img:
         img = img.convert("L")
 
         tempfile = str(tmp_path / "temp.gif")
-        GifImagePlugin._save_netpbm(img, 0, tempfile)
+        b = BytesIO()
+        GifImagePlugin._save_netpbm(img, b, tempfile)
         with Image.open(tempfile) as reloaded:
             assert_image_similar(img, reloaded.convert("L"), 0)
 
 
-def test_seek():
+def test_seek() -> None:
     with Image.open("Tests/images/dispose_none.gif") as img:
         frame_count = 0
         try:
@@ -377,7 +411,7 @@ def test_seek():
             assert frame_count == 5
 
 
-def test_seek_info():
+def test_seek_info() -> None:
     with Image.open("Tests/images/iss634.gif") as im:
         info = im.info.copy()
 
@@ -387,7 +421,7 @@ def test_seek_info():
         assert im.info == info
 
 
-def test_seek_rewind():
+def test_seek_rewind() -> None:
     with Image.open("Tests/images/iss634.gif") as im:
         im.seek(2)
         im.seek(1)
@@ -405,7 +439,7 @@ def test_seek_rewind():
         ("Tests/images/iss634.gif", 42),
     ),
 )
-def test_n_frames(path, n_frames):
+def test_n_frames(path: str, n_frames: int) -> None:
     # Test is_animated before n_frames
     with Image.open(path) as im:
         assert im.is_animated == (n_frames != 1)
@@ -416,7 +450,7 @@ def test_n_frames(path, n_frames):
         assert im.is_animated == (n_frames != 1)
 
 
-def test_no_change():
+def test_no_change() -> None:
     # Test n_frames does not change the image
     with Image.open("Tests/images/dispose_bgnd.gif") as im:
         im.seek(1)
@@ -437,7 +471,7 @@ def test_no_change():
         assert_image_equal(im, expected)
 
 
-def test_eoferror():
+def test_eoferror() -> None:
     with Image.open(TEST_GIF) as im:
         n_frames = im.n_frames
 
@@ -450,13 +484,13 @@ def test_eoferror():
         im.seek(n_frames - 1)
 
 
-def test_first_frame_transparency():
+def test_first_frame_transparency() -> None:
     with Image.open("Tests/images/first_frame_transparency.gif") as im:
         px = im.load()
         assert px[0, 0] == im.info["transparency"]
 
 
-def test_dispose_none():
+def test_dispose_none() -> None:
     with Image.open("Tests/images/dispose_none.gif") as img:
         try:
             while True:
@@ -466,7 +500,7 @@ def test_dispose_none():
             pass
 
 
-def test_dispose_none_load_end():
+def test_dispose_none_load_end() -> None:
     # Test image created with:
     #
     # im = Image.open("transparent.gif")
@@ -479,7 +513,7 @@ def test_dispose_none_load_end():
         assert_image_equal_tofile(img, "Tests/images/dispose_none_load_end_second.png")
 
 
-def test_dispose_background():
+def test_dispose_background() -> None:
     with Image.open("Tests/images/dispose_bgnd.gif") as img:
         try:
             while True:
@@ -489,7 +523,7 @@ def test_dispose_background():
             pass
 
 
-def test_dispose_background_transparency():
+def test_dispose_background_transparency() -> None:
     with Image.open("Tests/images/dispose_bgnd_transparency.gif") as img:
         img.seek(2)
         px = img.load()
@@ -517,7 +551,10 @@ def test_dispose_background_transparency():
         ),
     ),
 )
-def test_transparent_dispose(loading_strategy, expected_colors):
+def test_transparent_dispose(
+    loading_strategy: GifImagePlugin.LoadingStrategy,
+    expected_colors: tuple[tuple[int | tuple[int, int, int, int], ...]],
+) -> None:
     GifImagePlugin.LOADING_STRATEGY = loading_strategy
     try:
         with Image.open("Tests/images/transparent_dispose.gif") as img:
@@ -530,7 +567,7 @@ def test_transparent_dispose(loading_strategy, expected_colors):
         GifImagePlugin.LOADING_STRATEGY = GifImagePlugin.LoadingStrategy.RGB_AFTER_FIRST
 
 
-def test_dispose_previous():
+def test_dispose_previous() -> None:
     with Image.open("Tests/images/dispose_prev.gif") as img:
         try:
             while True:
@@ -540,7 +577,7 @@ def test_dispose_previous():
             pass
 
 
-def test_dispose_previous_first_frame():
+def test_dispose_previous_first_frame() -> None:
     with Image.open("Tests/images/dispose_prev_first_frame.gif") as im:
         im.seek(1)
         assert_image_equal_tofile(
@@ -548,7 +585,7 @@ def test_dispose_previous_first_frame():
         )
 
 
-def test_previous_frame_loaded():
+def test_previous_frame_loaded() -> None:
     with Image.open("Tests/images/dispose_none.gif") as img:
         img.load()
         img.seek(1)
@@ -559,7 +596,7 @@ def test_previous_frame_loaded():
             assert_image_equal(img_skipped, img)
 
 
-def test_save_dispose(tmp_path):
+def test_save_dispose(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
     im_list = [
         Image.new("L", (100, 100), "#000"),
@@ -587,10 +624,10 @@ def test_save_dispose(tmp_path):
             assert img.disposal_method == i + 1
 
 
-def test_dispose2_palette(tmp_path):
+def test_dispose2_palette(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
 
-    # Four colors: white, grey, black, red
+    # Four colors: white, gray, black, red
     circles = [(255, 255, 255), (153, 153, 153), (0, 0, 0), (255, 0, 0)]
 
     im_list = []
@@ -617,8 +654,11 @@ def test_dispose2_palette(tmp_path):
             # Center remains red every frame
             assert rgb_img.getpixel((50, 50)) == circle
 
+            # Check that frame transparency wasn't added unnecessarily
+            assert getattr(img, "_frame_transparency") is None
 
-def test_dispose2_diff(tmp_path):
+
+def test_dispose2_diff(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
 
     # 4 frames: red/blue, red/red, blue/blue, red/blue
@@ -660,7 +700,7 @@ def test_dispose2_diff(tmp_path):
             assert rgb_img.getpixel((1, 1)) == (255, 255, 255, 0)
 
 
-def test_dispose2_background(tmp_path):
+def test_dispose2_background(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
 
     im_list = []
@@ -686,7 +726,7 @@ def test_dispose2_background(tmp_path):
         assert im.getpixel((0, 0)) == (255, 0, 0)
 
 
-def test_dispose2_background_frame(tmp_path):
+def test_dispose2_background_frame(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
 
     im_list = [Image.new("RGBA", (1, 20))]
@@ -704,7 +744,26 @@ def test_dispose2_background_frame(tmp_path):
         assert im.n_frames == 3
 
 
-def test_transparency_in_second_frame(tmp_path):
+def test_dispose2_previous_frame(tmp_path: Path) -> None:
+    out = str(tmp_path / "temp.gif")
+
+    im = Image.new("P", (100, 100))
+    im.info["transparency"] = 0
+    d = ImageDraw.Draw(im)
+    d.rectangle([(0, 0), (100, 50)], 1)
+    im.putpalette((0, 0, 0, 255, 0, 0))
+
+    im2 = Image.new("P", (100, 100))
+    im2.putpalette((0, 0, 0))
+
+    im.save(out, save_all=True, append_images=[im2], disposal=[0, 2])
+
+    with Image.open(out) as im:
+        im.seek(1)
+        assert im.getpixel((0, 0)) == (0, 0, 0, 255)
+
+
+def test_transparency_in_second_frame(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
     with Image.open("Tests/images/different_transparency.gif") as im:
         assert im.info["transparency"] == 0
@@ -724,7 +783,7 @@ def test_transparency_in_second_frame(tmp_path):
         )
 
 
-def test_no_transparency_in_second_frame():
+def test_no_transparency_in_second_frame() -> None:
     with Image.open("Tests/images/iss634.gif") as img:
         # Seek to the second frame
         img.seek(img.tell() + 1)
@@ -734,7 +793,7 @@ def test_no_transparency_in_second_frame():
         assert img.histogram()[255] == 0
 
 
-def test_remapped_transparency(tmp_path):
+def test_remapped_transparency(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
 
     im = Image.new("P", (1, 2))
@@ -750,7 +809,7 @@ def test_remapped_transparency(tmp_path):
         assert reloaded.info["transparency"] == reloaded.getpixel((0, 1))
 
 
-def test_duration(tmp_path):
+def test_duration(tmp_path: Path) -> None:
     duration = 1000
 
     out = str(tmp_path / "temp.gif")
@@ -764,7 +823,7 @@ def test_duration(tmp_path):
         assert reread.info["duration"] == duration
 
 
-def test_multiple_duration(tmp_path):
+def test_multiple_duration(tmp_path: Path) -> None:
     duration_list = [1000, 2000, 3000]
 
     out = str(tmp_path / "temp.gif")
@@ -799,7 +858,7 @@ def test_multiple_duration(tmp_path):
                 pass
 
 
-def test_roundtrip_info_duration(tmp_path):
+def test_roundtrip_info_duration(tmp_path: Path) -> None:
     duration_list = [100, 500, 500]
 
     out = str(tmp_path / "temp.gif")
@@ -816,7 +875,7 @@ def test_roundtrip_info_duration(tmp_path):
         ] == duration_list
 
 
-def test_roundtrip_info_duration_combined(tmp_path):
+def test_roundtrip_info_duration_combined(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
     with Image.open("Tests/images/duplicate_frame.gif") as im:
         assert [frame.info["duration"] for frame in ImageSequence.Iterator(im)] == [
@@ -832,7 +891,7 @@ def test_roundtrip_info_duration_combined(tmp_path):
         ] == [1000, 2000]
 
 
-def test_identical_frames(tmp_path):
+def test_identical_frames(tmp_path: Path) -> None:
     duration_list = [1000, 1500, 2000, 4000]
 
     out = str(tmp_path / "temp.gif")
@@ -856,9 +915,18 @@ def test_identical_frames(tmp_path):
 
 
 @pytest.mark.parametrize(
-    "duration", ([1000, 1500, 2000, 4000], (1000, 1500, 2000, 4000), 8500)
+    "duration",
+    (
+        [1000, 1500, 2000],
+        (1000, 1500, 2000),
+        # One more duration than the number of frames
+        [1000, 1500, 2000, 4000],
+        1500,
+    ),
 )
-def test_identical_frames_to_single_frame(duration, tmp_path):
+def test_identical_frames_to_single_frame(
+    duration: int | list[int], tmp_path: Path
+) -> None:
     out = str(tmp_path / "temp.gif")
     im_list = [
         Image.new("L", (100, 100), "#000"),
@@ -872,10 +940,18 @@ def test_identical_frames_to_single_frame(duration, tmp_path):
         assert reread.n_frames == 1
 
         # Assert that the new duration is the total of the identical frames
-        assert reread.info["duration"] == 8500
+        assert reread.info["duration"] == 4500
 
 
-def test_number_of_loops(tmp_path):
+def test_loop_none(tmp_path: Path) -> None:
+    out = str(tmp_path / "temp.gif")
+    im = Image.new("L", (100, 100), "#000")
+    im.save(out, loop=None)
+    with Image.open(out) as reread:
+        assert "loop" not in reread.info
+
+
+def test_number_of_loops(tmp_path: Path) -> None:
     number_of_loops = 2
 
     out = str(tmp_path / "temp.gif")
@@ -893,7 +969,7 @@ def test_number_of_loops(tmp_path):
         assert im.info["loop"] == 2
 
 
-def test_background(tmp_path):
+def test_background(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
     im = Image.new("L", (100, 100), "#000")
     im.info["background"] = 1
@@ -902,11 +978,11 @@ def test_background(tmp_path):
         assert reread.info["background"] == im.info["background"]
 
 
-def test_webp_background(tmp_path):
+def test_webp_background(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
 
     # Test opaque WebP background
-    if features.check("webp") and features.check("webp_anim"):
+    if features.check("webp"):
         with Image.open("Tests/images/hopper.webp") as im:
             assert im.info["background"] == (255, 255, 255, 255)
             im.save(out)
@@ -917,7 +993,7 @@ def test_webp_background(tmp_path):
     im.save(out)
 
 
-def test_comment(tmp_path):
+def test_comment(tmp_path: Path) -> None:
     with Image.open(TEST_GIF) as im:
         assert im.info["comment"] == b"File written by Adobe Photoshop\xa8 4.0"
 
@@ -937,7 +1013,7 @@ def test_comment(tmp_path):
         assert reread.info["version"] == b"GIF89a"
 
 
-def test_comment_over_255(tmp_path):
+def test_comment_over_255(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
     im = Image.new("L", (100, 100), "#000")
     comment = b"Test comment text"
@@ -952,18 +1028,18 @@ def test_comment_over_255(tmp_path):
         assert reread.info["version"] == b"GIF89a"
 
 
-def test_zero_comment_subblocks():
+def test_zero_comment_subblocks() -> None:
     with Image.open("Tests/images/hopper_zero_comment_subblocks.gif") as im:
         assert_image_equal_tofile(im, TEST_GIF)
 
 
-def test_read_multiple_comment_blocks():
+def test_read_multiple_comment_blocks() -> None:
     with Image.open("Tests/images/multiple_comments.gif") as im:
         # Multiple comment blocks in a frame are separated not concatenated
         assert im.info["comment"] == b"Test comment 1\nTest comment 2"
 
 
-def test_empty_string_comment(tmp_path):
+def test_empty_string_comment(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
     with Image.open("Tests/images/chi.gif") as im:
         assert "comment" in im.info
@@ -976,7 +1052,7 @@ def test_empty_string_comment(tmp_path):
             assert "comment" not in frame.info
 
 
-def test_retain_comment_in_subsequent_frames(tmp_path):
+def test_retain_comment_in_subsequent_frames(tmp_path: Path) -> None:
     # Test that a comment block at the beginning is kept
     with Image.open("Tests/images/chi.gif") as im:
         for frame in ImageSequence.Iterator(im):
@@ -1007,10 +1083,10 @@ def test_retain_comment_in_subsequent_frames(tmp_path):
             assert frame.info["comment"] == b"Test"
 
 
-def test_version(tmp_path):
+def test_version(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
 
-    def assert_version_after_save(im, version):
+    def assert_version_after_save(im: Image.Image, version: bytes) -> None:
         im.save(out)
         with Image.open(out) as reread:
             assert reread.info["version"] == version
@@ -1037,7 +1113,7 @@ def test_version(tmp_path):
         assert_version_after_save(im, b"GIF87a")
 
 
-def test_append_images(tmp_path):
+def test_append_images(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
 
     # Test appending single frame images
@@ -1049,7 +1125,7 @@ def test_append_images(tmp_path):
         assert reread.n_frames == 3
 
     # Tests appending using a generator
-    def im_generator(ims):
+    def im_generator(ims: list[Image.Image]) -> Generator[Image.Image, None, None]:
         yield from ims
 
     im.save(out, save_all=True, append_images=im_generator(ims))
@@ -1066,7 +1142,22 @@ def test_append_images(tmp_path):
         assert reread.n_frames == 10
 
 
-def test_transparent_optimize(tmp_path):
+def test_append_different_size_image(tmp_path: Path) -> None:
+    out = str(tmp_path / "temp.gif")
+
+    im = Image.new("RGB", (100, 100))
+    bigger_im = Image.new("RGB", (200, 200), "#f00")
+
+    im.save(out, save_all=True, append_images=[bigger_im])
+
+    with Image.open(out) as reread:
+        assert reread.size == (100, 100)
+
+        reread.seek(1)
+        assert reread.size == (100, 100)
+
+
+def test_transparent_optimize(tmp_path: Path) -> None:
     # From issue #2195, if the transparent color is incorrectly optimized out, GIF loses
     # transparency.
     # Need a palette that isn't using the 0 color,
@@ -1086,7 +1177,22 @@ def test_transparent_optimize(tmp_path):
         assert reloaded.info["transparency"] == reloaded.getpixel((252, 0))
 
 
-def test_rgb_transparency(tmp_path):
+def test_removed_transparency(tmp_path: Path) -> None:
+    out = str(tmp_path / "temp.gif")
+    im = Image.new("RGB", (256, 1))
+
+    for x in range(256):
+        im.putpixel((x, 0), (x, 0, 0))
+
+    im.info["transparency"] = (255, 255, 255)
+    with pytest.warns(UserWarning):
+        im.save(out)
+
+    with Image.open(out) as reloaded:
+        assert "transparency" not in reloaded.info
+
+
+def test_rgb_transparency(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
 
     # Single frame
@@ -1108,7 +1214,7 @@ def test_rgb_transparency(tmp_path):
         assert "transparency" not in reloaded.info
 
 
-def test_rgba_transparency(tmp_path):
+def test_rgba_transparency(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
 
     im = hopper("P")
@@ -1119,7 +1225,13 @@ def test_rgba_transparency(tmp_path):
         assert_image_equal(hopper("P").convert("RGB"), reloaded)
 
 
-def test_bbox(tmp_path):
+def test_background_outside_palettte(tmp_path: Path) -> None:
+    with Image.open("Tests/images/background_outside_palette.gif") as im:
+        im.seek(1)
+        assert im.info["background"] == 255
+
+
+def test_bbox(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
 
     im = Image.new("RGB", (100, 100), "#fff")
@@ -1130,36 +1242,48 @@ def test_bbox(tmp_path):
         assert reread.n_frames == 2
 
 
-def test_palette_save_L(tmp_path):
+def test_bbox_alpha(tmp_path: Path) -> None:
+    out = str(tmp_path / "temp.gif")
+
+    im = Image.new("RGBA", (1, 2), (255, 0, 0, 255))
+    im.putpixel((0, 1), (255, 0, 0, 0))
+    im2 = Image.new("RGBA", (1, 2), (255, 0, 0, 0))
+    im.save(out, save_all=True, append_images=[im2])
+
+    with Image.open(out) as reread:
+        assert reread.n_frames == 2
+
+
+def test_palette_save_L(tmp_path: Path) -> None:
     # Generate an L mode image with a separate palette
 
     im = hopper("P")
     im_l = Image.frombytes("L", im.size, im.tobytes())
-    palette = bytes(im.getpalette())
+    palette = im.getpalette()
+    assert palette is not None
 
     out = str(tmp_path / "temp.gif")
-    im_l.save(out, palette=palette)
+    im_l.save(out, palette=bytes(palette))
 
     with Image.open(out) as reloaded:
         assert_image_equal(reloaded.convert("RGB"), im.convert("RGB"))
 
 
-def test_palette_save_P(tmp_path):
-    # Pass in a different palette, then construct what the image would look like.
-    # Forcing a non-straight grayscale palette.
-
-    im = hopper("P")
-    palette = bytes(255 - i // 3 for i in range(768))
+def test_palette_save_P(tmp_path: Path) -> None:
+    im = Image.new("P", (1, 2))
+    im.putpixel((0, 1), 1)
 
     out = str(tmp_path / "temp.gif")
-    im.save(out, palette=palette)
+    im.save(out, palette=bytes((1, 2, 3, 4, 5, 6)))
 
     with Image.open(out) as reloaded:
-        im.putpalette(palette)
-        assert_image_equal(reloaded, im)
+        reloaded_rgb = reloaded.convert("RGB")
+
+        assert reloaded_rgb.getpixel((0, 0)) == (1, 2, 3)
+        assert reloaded_rgb.getpixel((0, 1)) == (4, 5, 6)
 
 
-def test_palette_save_duplicate_entries(tmp_path):
+def test_palette_save_duplicate_entries(tmp_path: Path) -> None:
     im = Image.new("P", (1, 2))
     im.putpixel((0, 1), 1)
 
@@ -1172,7 +1296,7 @@ def test_palette_save_duplicate_entries(tmp_path):
         assert reloaded.convert("RGB").getpixel((0, 1)) == (0, 0, 0)
 
 
-def test_palette_save_all_P(tmp_path):
+def test_palette_save_all_P(tmp_path: Path) -> None:
     frames = []
     colors = ((255, 0, 0), (0, 255, 0))
     for color in colors:
@@ -1195,7 +1319,7 @@ def test_palette_save_all_P(tmp_path):
         assert im.palette.palette == im.global_palette.palette
 
 
-def test_palette_save_ImagePalette(tmp_path):
+def test_palette_save_ImagePalette(tmp_path: Path) -> None:
     # Pass in a different palette, as an ImagePalette.ImagePalette
     # effectively the same as test_palette_save_P
 
@@ -1210,7 +1334,7 @@ def test_palette_save_ImagePalette(tmp_path):
         assert_image_equal(reloaded.convert("RGB"), im.convert("RGB"))
 
 
-def test_save_I(tmp_path):
+def test_save_I(tmp_path: Path) -> None:
     # Test saving something that would trigger the auto-convert to 'L'
 
     im = hopper("I")
@@ -1222,7 +1346,7 @@ def test_save_I(tmp_path):
         assert_image_equal(reloaded.convert("L"), im.convert("L"))
 
 
-def test_getdata():
+def test_getdata() -> None:
     # Test getheader/getdata against legacy values.
     # Create a 'P' image with holes in the palette.
     im = Image._wedge().resize((16, 16), Image.Resampling.NEAREST)
@@ -1250,7 +1374,7 @@ def test_getdata():
         GifImagePlugin._FORCE_OPTIMIZE = False
 
 
-def test_lzw_bits():
+def test_lzw_bits() -> None:
     # see https://github.com/python-pillow/Pillow/issues/2811
     with Image.open("Tests/images/issue_2811.gif") as im:
         assert im.tile[0][3][0] == 11  # LZW bits
@@ -1258,19 +1382,42 @@ def test_lzw_bits():
         im.load()
 
 
-def test_extents():
-    with Image.open("Tests/images/test_extents.gif") as im:
-        assert im.size == (100, 100)
+@pytest.mark.parametrize(
+    "test_file, loading_strategy",
+    (
+        ("test_extents.gif", GifImagePlugin.LoadingStrategy.RGB_AFTER_FIRST),
+        (
+            "test_extents.gif",
+            GifImagePlugin.LoadingStrategy.RGB_AFTER_DIFFERENT_PALETTE_ONLY,
+        ),
+        (
+            "test_extents_transparency.gif",
+            GifImagePlugin.LoadingStrategy.RGB_AFTER_FIRST,
+        ),
+    ),
+)
+def test_extents(
+    test_file: str, loading_strategy: GifImagePlugin.LoadingStrategy
+) -> None:
+    GifImagePlugin.LOADING_STRATEGY = loading_strategy
+    try:
+        with Image.open("Tests/images/" + test_file) as im:
+            assert im.size == (100, 100)
 
-        # Check that n_frames does not change the size
-        assert im.n_frames == 2
-        assert im.size == (100, 100)
+            # Check that n_frames does not change the size
+            assert im.n_frames == 2
+            assert im.size == (100, 100)
 
-        im.seek(1)
-        assert im.size == (150, 150)
+            im.seek(1)
+            assert im.size == (150, 150)
+
+            im.load()
+            assert im.im.size == (150, 150)
+    finally:
+        GifImagePlugin.LOADING_STRATEGY = GifImagePlugin.LoadingStrategy.RGB_AFTER_FIRST
 
 
-def test_missing_background():
+def test_missing_background() -> None:
     # The Global Color Table Flag isn't set, so there is no background color index,
     # but the disposal method is "Restore to background color"
     with Image.open("Tests/images/missing_background.gif") as im:
@@ -1278,7 +1425,7 @@ def test_missing_background():
         assert_image_equal_tofile(im, "Tests/images/missing_background_first_frame.png")
 
 
-def test_saving_rgba(tmp_path):
+def test_saving_rgba(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.gif")
     with Image.open("Tests/images/transparent.png") as im:
         im.save(out)
@@ -1286,3 +1433,21 @@ def test_saving_rgba(tmp_path):
     with Image.open(out) as reloaded:
         reloaded_rgba = reloaded.convert("RGBA")
         assert reloaded_rgba.load()[0, 0][3] == 0
+
+
+def test_optimizing_p_rgba(tmp_path: Path) -> None:
+    out = str(tmp_path / "temp.gif")
+
+    im1 = Image.new("P", (100, 100))
+    d = ImageDraw.Draw(im1)
+    d.ellipse([(40, 40), (60, 60)], fill=1)
+    data = [0, 0, 0, 0, 0, 0, 0, 255] + [0, 0, 0, 0] * 254
+    im1.putpalette(data, "RGBA")
+
+    im2 = Image.new("P", (100, 100))
+    im2.putpalette(data, "RGBA")
+
+    im1.save(out, save_all=True, append_images=[im2])
+
+    with Image.open(out) as reloaded:
+        assert reloaded.n_frames == 2
diff --git a/Tests/test_file_gimpgradient.py b/Tests/test_file_gimpgradient.py
index 3f056fdae..006ee952d 100644
--- a/Tests/test_file_gimpgradient.py
+++ b/Tests/test_file_gimpgradient.py
@@ -1,7 +1,9 @@
+from __future__ import annotations
+
 from PIL import GimpGradientFile, ImagePalette
 
 
-def test_linear_pos_le_middle():
+def test_linear_pos_le_middle() -> None:
     # Arrange
     middle = 0.5
     pos = 0.25
@@ -13,7 +15,7 @@ def test_linear_pos_le_middle():
     assert ret == 0.25
 
 
-def test_linear_pos_le_small_middle():
+def test_linear_pos_le_small_middle() -> None:
     # Arrange
     middle = 1e-11
     pos = 1e-12
@@ -25,7 +27,7 @@ def test_linear_pos_le_small_middle():
     assert ret == 0.0
 
 
-def test_linear_pos_gt_middle():
+def test_linear_pos_gt_middle() -> None:
     # Arrange
     middle = 0.5
     pos = 0.75
@@ -37,7 +39,7 @@ def test_linear_pos_gt_middle():
     assert ret == 0.75
 
 
-def test_linear_pos_gt_small_middle():
+def test_linear_pos_gt_small_middle() -> None:
     # Arrange
     middle = 1 - 1e-11
     pos = 1 - 1e-12
@@ -49,7 +51,7 @@ def test_linear_pos_gt_small_middle():
     assert ret == 1.0
 
 
-def test_curved():
+def test_curved() -> None:
     # Arrange
     middle = 0.5
     pos = 0.75
@@ -61,7 +63,7 @@ def test_curved():
     assert ret == 0.75
 
 
-def test_sine():
+def test_sine() -> None:
     # Arrange
     middle = 0.5
     pos = 0.75
@@ -73,7 +75,7 @@ def test_sine():
     assert ret == 0.8535533905932737
 
 
-def test_sphere_increasing():
+def test_sphere_increasing() -> None:
     # Arrange
     middle = 0.5
     pos = 0.75
@@ -85,7 +87,7 @@ def test_sphere_increasing():
     assert round(abs(ret - 0.9682458365518543), 7) == 0
 
 
-def test_sphere_decreasing():
+def test_sphere_decreasing() -> None:
     # Arrange
     middle = 0.5
     pos = 0.75
@@ -97,7 +99,7 @@ def test_sphere_decreasing():
     assert ret == 0.3385621722338523
 
 
-def test_load_via_imagepalette():
+def test_load_via_imagepalette() -> None:
     # Arrange
     test_file = "Tests/images/gimp_gradient.ggr"
 
@@ -110,7 +112,7 @@ def test_load_via_imagepalette():
     assert palette[1] == "RGBA"
 
 
-def test_load_1_3_via_imagepalette():
+def test_load_1_3_via_imagepalette() -> None:
     # Arrange
     # GIMP 1.3 gradient files contain a name field
     test_file = "Tests/images/gimp_gradient_with_name.ggr"
diff --git a/Tests/test_file_gimppalette.py b/Tests/test_file_gimppalette.py
index caec9cf21..e8d5f1705 100644
--- a/Tests/test_file_gimppalette.py
+++ b/Tests/test_file_gimppalette.py
@@ -1,9 +1,11 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL.GimpPaletteFile import GimpPaletteFile
 
 
-def test_sanity():
+def test_sanity() -> None:
     with open("Tests/images/test.gpl", "rb") as fp:
         GimpPaletteFile(fp)
 
@@ -20,7 +22,7 @@ def test_sanity():
             GimpPaletteFile(fp)
 
 
-def test_get_palette():
+def test_get_palette() -> None:
     # Arrange
     with open("Tests/images/custom_gimp_palette.gpl", "rb") as fp:
         palette_file = GimpPaletteFile(fp)
diff --git a/Tests/test_file_gribstub.py b/Tests/test_file_gribstub.py
index dd1c5e7d2..aba473d24 100644
--- a/Tests/test_file_gribstub.py
+++ b/Tests/test_file_gribstub.py
@@ -1,13 +1,18 @@
+from __future__ import annotations
+
+from pathlib import Path
+from typing import IO
+
 import pytest
 
-from PIL import GribStubImagePlugin, Image
+from PIL import GribStubImagePlugin, Image, ImageFile
 
 from .helper import hopper
 
 TEST_FILE = "Tests/images/WAlaska.wind.7days.grb"
 
 
-def test_open():
+def test_open() -> None:
     # Act
     with Image.open(TEST_FILE) as im:
         # Assert
@@ -18,7 +23,7 @@ def test_open():
         assert im.size == (1, 1)
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     # Arrange
     invalid_file = "Tests/images/flower.jpg"
 
@@ -27,7 +32,7 @@ def test_invalid_file():
         GribStubImagePlugin.GribStubImageFile(invalid_file)
 
 
-def test_load():
+def test_load() -> None:
     # Arrange
     with Image.open(TEST_FILE) as im:
         # Act / Assert: stub cannot load without an implemented handler
@@ -35,7 +40,7 @@ def test_load():
             im.load()
 
 
-def test_save(tmp_path):
+def test_save(tmp_path: Path) -> None:
     # Arrange
     im = hopper()
     tmpfile = str(tmp_path / "temp.grib")
@@ -45,31 +50,34 @@ def test_save(tmp_path):
         im.save(tmpfile)
 
 
-def test_handler(tmp_path):
-    class TestHandler:
+def test_handler(tmp_path: Path) -> None:
+    class TestHandler(ImageFile.StubHandler):
         opened = False
         loaded = False
         saved = False
 
-        def open(self, im):
+        def open(self, im: Image.Image) -> None:
             self.opened = True
 
-        def load(self, im):
+        def load(self, im: Image.Image) -> Image.Image:
             self.loaded = True
             im.fp.close()
             return Image.new("RGB", (1, 1))
 
-        def save(self, im, fp, filename):
+        def is_loaded(self) -> bool:
+            return self.loaded
+
+        def save(self, im: Image.Image, fp: IO[bytes], filename: str) -> None:
             self.saved = True
 
     handler = TestHandler()
     GribStubImagePlugin.register_handler(handler)
     with Image.open(TEST_FILE) as im:
         assert handler.opened
-        assert not handler.loaded
+        assert not handler.is_loaded()
 
         im.load()
-        assert handler.loaded
+        assert handler.is_loaded()
 
         temp_file = str(tmp_path / "temp.grib")
         im.save(temp_file)
diff --git a/Tests/test_file_hdf5stub.py b/Tests/test_file_hdf5stub.py
index 7ca10fac5..8275bd0d8 100644
--- a/Tests/test_file_hdf5stub.py
+++ b/Tests/test_file_hdf5stub.py
@@ -1,11 +1,17 @@
+from __future__ import annotations
+
+from io import BytesIO
+from pathlib import Path
+from typing import IO
+
 import pytest
 
-from PIL import Hdf5StubImagePlugin, Image
+from PIL import Hdf5StubImagePlugin, Image, ImageFile
 
 TEST_FILE = "Tests/images/hdf5.h5"
 
 
-def test_open():
+def test_open() -> None:
     # Act
     with Image.open(TEST_FILE) as im:
         # Assert
@@ -16,7 +22,7 @@ def test_open():
         assert im.size == (1, 1)
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     # Arrange
     invalid_file = "Tests/images/flower.jpg"
 
@@ -25,7 +31,7 @@ def test_invalid_file():
         Hdf5StubImagePlugin.HDF5StubImageFile(invalid_file)
 
 
-def test_load():
+def test_load() -> None:
     # Arrange
     with Image.open(TEST_FILE) as im:
         # Act / Assert: stub cannot load without an implemented handler
@@ -33,10 +39,10 @@ def test_load():
             im.load()
 
 
-def test_save():
+def test_save() -> None:
     # Arrange
     with Image.open(TEST_FILE) as im:
-        dummy_fp = None
+        dummy_fp = BytesIO()
         dummy_filename = "dummy.filename"
 
         # Act / Assert: stub cannot save without an implemented handler
@@ -46,31 +52,34 @@ def test_save():
             Hdf5StubImagePlugin._save(im, dummy_fp, dummy_filename)
 
 
-def test_handler(tmp_path):
-    class TestHandler:
+def test_handler(tmp_path: Path) -> None:
+    class TestHandler(ImageFile.StubHandler):
         opened = False
         loaded = False
         saved = False
 
-        def open(self, im):
+        def open(self, im: Image.Image) -> None:
             self.opened = True
 
-        def load(self, im):
+        def load(self, im: Image.Image) -> Image.Image:
             self.loaded = True
             im.fp.close()
             return Image.new("RGB", (1, 1))
 
-        def save(self, im, fp, filename):
+        def is_loaded(self) -> bool:
+            return self.loaded
+
+        def save(self, im: Image.Image, fp: IO[bytes], filename: str) -> None:
             self.saved = True
 
     handler = TestHandler()
     Hdf5StubImagePlugin.register_handler(handler)
     with Image.open(TEST_FILE) as im:
         assert handler.opened
-        assert not handler.loaded
+        assert not handler.is_loaded()
 
         im.load()
-        assert handler.loaded
+        assert handler.is_loaded()
 
         temp_file = str(tmp_path / "temp.h5")
         im.save(temp_file)
diff --git a/Tests/test_file_icns.py b/Tests/test_file_icns.py
index 42275424d..141b88dfa 100644
--- a/Tests/test_file_icns.py
+++ b/Tests/test_file_icns.py
@@ -1,6 +1,9 @@
+from __future__ import annotations
+
 import io
 import os
 import warnings
+from pathlib import Path
 
 import pytest
 
@@ -12,12 +15,14 @@ from .helper import assert_image_equal, assert_image_similar_tofile, skip_unless
 TEST_FILE = "Tests/images/pillow.icns"
 
 
-def test_sanity():
+def test_sanity() -> None:
     # Loading this icon by default should result in the largest size
     # (512x512@2x) being loaded
     with Image.open(TEST_FILE) as im:
         # Assert that there is no unclosed file warning
         with warnings.catch_warnings():
+            warnings.simplefilter("error")
+
             im.load()
 
         assert im.mode == "RGBA"
@@ -25,7 +30,7 @@ def test_sanity():
         assert im.format == "ICNS"
 
 
-def test_load():
+def test_load() -> None:
     with Image.open(TEST_FILE) as im:
         assert im.load()[0, 0] == (0, 0, 0, 0)
 
@@ -33,7 +38,7 @@ def test_load():
         assert im.load()[0, 0] == (0, 0, 0, 0)
 
 
-def test_save(tmp_path):
+def test_save(tmp_path: Path) -> None:
     temp_file = str(tmp_path / "temp.icns")
 
     with Image.open(TEST_FILE) as im:
@@ -50,7 +55,7 @@ def test_save(tmp_path):
         assert _binary.i32be(fp.read(4)) == file_length
 
 
-def test_save_append_images(tmp_path):
+def test_save_append_images(tmp_path: Path) -> None:
     temp_file = str(tmp_path / "temp.icns")
     provided_im = Image.new("RGBA", (32, 32), (255, 0, 0, 128))
 
@@ -60,12 +65,12 @@ def test_save_append_images(tmp_path):
         assert_image_similar_tofile(im, temp_file, 1)
 
         with Image.open(temp_file) as reread:
-            reread.size = (16, 16, 2)
-            reread.load()
+            reread.size = (16, 16)
+            reread.load(2)
             assert_image_equal(reread, provided_im)
 
 
-def test_save_fp():
+def test_save_fp() -> None:
     fp = io.BytesIO()
 
     with Image.open(TEST_FILE) as im:
@@ -77,24 +82,31 @@ def test_save_fp():
         assert reread.format == "ICNS"
 
 
-def test_sizes():
+def test_sizes() -> None:
     # Check that we can load all of the sizes, and that the final pixel
     # dimensions are as expected
     with Image.open(TEST_FILE) as im:
         for w, h, r in im.info["sizes"]:
             wr = w * r
             hr = h * r
-            im.size = (w, h, r)
+            with pytest.warns(DeprecationWarning):
+                im.size = (w, h, r)
             im.load()
             assert im.mode == "RGBA"
             assert im.size == (wr, hr)
 
+            # Test using load() with scale
+            im.size = (w, h)
+            im.load(scale=r)
+            assert im.mode == "RGBA"
+            assert im.size == (wr, hr)
+
         # Check that we cannot load an incorrect size
         with pytest.raises(ValueError):
-            im.size = (1, 1)
+            im.size = (1, 2)
 
 
-def test_older_icon():
+def test_older_icon() -> None:
     # This icon was made with Icon Composer rather than iconutil; it still
     # uses PNG rather than JP2, however (since it was made on 10.9).
     with Image.open("Tests/images/pillow2.icns") as im:
@@ -102,14 +114,14 @@ def test_older_icon():
             wr = w * r
             hr = h * r
             with Image.open("Tests/images/pillow2.icns") as im2:
-                im2.size = (w, h, r)
-                im2.load()
+                im2.size = (w, h)
+                im2.load(r)
                 assert im2.mode == "RGBA"
                 assert im2.size == (wr, hr)
 
 
 @skip_unless_feature("jpg_2000")
-def test_jp2_icon():
+def test_jp2_icon() -> None:
     # This icon uses JPEG 2000 images instead of the PNG images.
     # The advantage of doing this is that OS X 10.5 supports JPEG 2000
     # but not PNG; some commercial software therefore does just this.
@@ -119,13 +131,13 @@ def test_jp2_icon():
             wr = w * r
             hr = h * r
             with Image.open("Tests/images/pillow3.icns") as im2:
-                im2.size = (w, h, r)
-                im2.load()
+                im2.size = (w, h)
+                im2.load(r)
                 assert im2.mode == "RGBA"
                 assert im2.size == (wr, hr)
 
 
-def test_getimage():
+def test_getimage() -> None:
     with open(TEST_FILE, "rb") as fp:
         icns_file = IcnsImagePlugin.IcnsFile(fp)
 
@@ -138,14 +150,14 @@ def test_getimage():
         assert im.size == (512, 512)
 
 
-def test_not_an_icns_file():
+def test_not_an_icns_file() -> None:
     with io.BytesIO(b"invalid\n") as fp:
         with pytest.raises(SyntaxError):
             IcnsImagePlugin.IcnsFile(fp)
 
 
 @skip_unless_feature("jpg_2000")
-def test_icns_decompression_bomb():
+def test_icns_decompression_bomb() -> None:
     with Image.open(
         "Tests/images/oom-8ed3316a4109213ca96fb8a256a0bfefdece1461.icns"
     ) as im:
diff --git a/Tests/test_file_ico.py b/Tests/test_file_ico.py
index 4e6dbe6ed..37770498a 100644
--- a/Tests/test_file_ico.py
+++ b/Tests/test_file_ico.py
@@ -1,16 +1,19 @@
+from __future__ import annotations
+
 import io
 import os
+from pathlib import Path
 
 import pytest
 
-from PIL import IcoImagePlugin, Image, ImageDraw
+from PIL import IcoImagePlugin, Image, ImageDraw, ImageFile
 
 from .helper import assert_image_equal, assert_image_equal_tofile, hopper
 
 TEST_ICO_FILE = "Tests/images/hopper.ico"
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open(TEST_ICO_FILE) as im:
         im.load()
     assert im.mode == "RGBA"
@@ -19,29 +22,40 @@ def test_sanity():
     assert im.get_format_mimetype() == "image/x-icon"
 
 
-def test_load():
+def test_load() -> None:
     with Image.open(TEST_ICO_FILE) as im:
         assert im.load()[0, 0] == (1, 1, 9, 255)
 
 
-def test_mask():
+def test_mask() -> None:
     with Image.open("Tests/images/hopper_mask.ico") as im:
         assert_image_equal_tofile(im, "Tests/images/hopper_mask.png")
 
 
-def test_black_and_white():
+def test_black_and_white() -> None:
     with Image.open("Tests/images/black_and_white.ico") as im:
         assert im.mode == "RGBA"
         assert im.size == (16, 16)
 
 
-def test_invalid_file():
+def test_palette(tmp_path: Path) -> None:
+    temp_file = str(tmp_path / "temp.ico")
+
+    im = Image.new("P", (16, 16))
+    im.save(temp_file)
+
+    with Image.open(temp_file) as reloaded:
+        assert reloaded.mode == "P"
+        assert reloaded.palette is not None
+
+
+def test_invalid_file() -> None:
     with open("Tests/images/flower.jpg", "rb") as fp:
         with pytest.raises(SyntaxError):
             IcoImagePlugin.IcoImageFile(fp)
 
 
-def test_save_to_bytes():
+def test_save_to_bytes() -> None:
     output = io.BytesIO()
     im = hopper()
     im.save(output, "ico", sizes=[(32, 32), (64, 64)])
@@ -71,7 +85,7 @@ def test_save_to_bytes():
         )
 
 
-def test_getpixel(tmp_path):
+def test_getpixel(tmp_path: Path) -> None:
     temp_file = str(tmp_path / "temp.ico")
 
     im = hopper()
@@ -84,7 +98,7 @@ def test_getpixel(tmp_path):
         assert reloaded.getpixel((0, 0)) == (18, 20, 62)
 
 
-def test_no_duplicates(tmp_path):
+def test_no_duplicates(tmp_path: Path) -> None:
     temp_file = str(tmp_path / "temp.ico")
     temp_file2 = str(tmp_path / "temp2.ico")
 
@@ -98,7 +112,7 @@ def test_no_duplicates(tmp_path):
     assert os.path.getsize(temp_file) == os.path.getsize(temp_file2)
 
 
-def test_different_bit_depths(tmp_path):
+def test_different_bit_depths(tmp_path: Path) -> None:
     temp_file = str(tmp_path / "temp.ico")
     temp_file2 = str(tmp_path / "temp2.ico")
 
@@ -132,7 +146,7 @@ def test_different_bit_depths(tmp_path):
 
 
 @pytest.mark.parametrize("mode", ("1", "L", "P", "RGB", "RGBA"))
-def test_save_to_bytes_bmp(mode):
+def test_save_to_bytes_bmp(mode: str) -> None:
     output = io.BytesIO()
     im = hopper(mode)
     im.save(output, "ico", bitmap_format="bmp", sizes=[(32, 32), (64, 64)])
@@ -160,13 +174,13 @@ def test_save_to_bytes_bmp(mode):
         assert_image_equal(reloaded, im)
 
 
-def test_incorrect_size():
+def test_incorrect_size() -> None:
     with Image.open(TEST_ICO_FILE) as im:
         with pytest.raises(ValueError):
             im.size = (1, 1)
 
 
-def test_save_256x256(tmp_path):
+def test_save_256x256(tmp_path: Path) -> None:
     """Issue #2264 https://github.com/python-pillow/Pillow/issues/2264"""
     # Arrange
     with Image.open("Tests/images/hopper_256x256.ico") as im:
@@ -179,7 +193,7 @@ def test_save_256x256(tmp_path):
         assert im_saved.size == (256, 256)
 
 
-def test_only_save_relevant_sizes(tmp_path):
+def test_only_save_relevant_sizes(tmp_path: Path) -> None:
     """Issue #2266 https://github.com/python-pillow/Pillow/issues/2266
     Should save in 16x16, 24x24, 32x32, 48x48 sizes
     and not in 16x16, 24x24, 32x32, 48x48, 48x48, 48x48, 48x48 sizes
@@ -195,7 +209,7 @@ def test_only_save_relevant_sizes(tmp_path):
         assert im_saved.info["sizes"] == {(16, 16), (24, 24), (32, 32), (48, 48)}
 
 
-def test_save_append_images(tmp_path):
+def test_save_append_images(tmp_path: Path) -> None:
     # append_images should be used for scaled down versions of the image
     im = hopper("RGBA")
     provided_im = Image.new("RGBA", (32, 32), (255, 0, 0))
@@ -209,7 +223,7 @@ def test_save_append_images(tmp_path):
         assert_image_equal(reread, provided_im)
 
 
-def test_unexpected_size():
+def test_unexpected_size() -> None:
     # This image has been manually hexedited to state that it is 16x32
     # while the image within is still 16x16
     with pytest.warns(UserWarning):
@@ -217,7 +231,7 @@ def test_unexpected_size():
             assert im.size == (16, 16)
 
 
-def test_draw_reloaded(tmp_path):
+def test_draw_reloaded(tmp_path: Path) -> None:
     with Image.open(TEST_ICO_FILE) as im:
         outfile = str(tmp_path / "temp_saved_hopper_draw.ico")
 
@@ -227,3 +241,29 @@ def test_draw_reloaded(tmp_path):
 
     with Image.open(outfile) as im:
         assert_image_equal_tofile(im, "Tests/images/hopper_draw.ico")
+
+
+def test_truncated_mask() -> None:
+    # 1 bpp
+    with open("Tests/images/hopper_mask.ico", "rb") as fp:
+        data = fp.read()
+
+    ImageFile.LOAD_TRUNCATED_IMAGES = True
+    data = data[:-3]
+
+    try:
+        with Image.open(io.BytesIO(data)) as im:
+            with Image.open("Tests/images/hopper_mask.png") as expected:
+                assert im.mode == "1"
+
+        # 32 bpp
+        output = io.BytesIO()
+        expected = hopper("RGBA")
+        expected.save(output, "ico", bitmap_format="bmp")
+
+        data = output.getvalue()[:-1]
+
+        with Image.open(io.BytesIO(data)) as im:
+            assert im.mode == "RGB"
+    finally:
+        ImageFile.LOAD_TRUNCATED_IMAGES = False
diff --git a/Tests/test_file_im.py b/Tests/test_file_im.py
index fd00f260e..1d3fa485f 100644
--- a/Tests/test_file_im.py
+++ b/Tests/test_file_im.py
@@ -1,5 +1,8 @@
+from __future__ import annotations
+
 import filecmp
 import warnings
+from pathlib import Path
 
 import pytest
 
@@ -11,7 +14,7 @@ from .helper import assert_image_equal_tofile, hopper, is_pypy
 TEST_IM = "Tests/images/hopper.im"
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open(TEST_IM) as im:
         im.load()
         assert im.mode == "RGB"
@@ -19,7 +22,7 @@ def test_sanity():
         assert im.format == "IM"
 
 
-def test_name_limit(tmp_path):
+def test_name_limit(tmp_path: Path) -> None:
     out = str(tmp_path / ("name_limit_test" * 7 + ".im"))
     with Image.open(TEST_IM) as im:
         im.save(out)
@@ -27,8 +30,8 @@ def test_name_limit(tmp_path):
 
 
 @pytest.mark.skipif(is_pypy(), reason="Requires CPython")
-def test_unclosed_file():
-    def open():
+def test_unclosed_file() -> None:
+    def open() -> None:
         im = Image.open(TEST_IM)
         im.load()
 
@@ -36,20 +39,24 @@ def test_unclosed_file():
         open()
 
 
-def test_closed_file():
+def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         im = Image.open(TEST_IM)
         im.load()
         im.close()
 
 
-def test_context_manager():
+def test_context_manager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with Image.open(TEST_IM) as im:
             im.load()
 
 
-def test_tell():
+def test_tell() -> None:
     # Arrange
     with Image.open(TEST_IM) as im:
         # Act
@@ -59,13 +66,13 @@ def test_tell():
     assert frame == 0
 
 
-def test_n_frames():
+def test_n_frames() -> None:
     with Image.open(TEST_IM) as im:
         assert im.n_frames == 1
         assert not im.is_animated
 
 
-def test_eoferror():
+def test_eoferror() -> None:
     with Image.open(TEST_IM) as im:
         n_frames = im.n_frames
 
@@ -79,14 +86,14 @@ def test_eoferror():
 
 
 @pytest.mark.parametrize("mode", ("RGB", "P", "PA"))
-def test_roundtrip(mode, tmp_path):
+def test_roundtrip(mode: str, tmp_path: Path) -> None:
     out = str(tmp_path / "temp.im")
     im = hopper(mode)
     im.save(out)
     assert_image_equal_tofile(im, out)
 
 
-def test_small_palette(tmp_path):
+def test_small_palette(tmp_path: Path) -> None:
     im = Image.new("P", (1, 1))
     colors = [0, 1, 2]
     im.putpalette(colors)
@@ -98,19 +105,19 @@ def test_small_palette(tmp_path):
         assert reloaded.getpalette() == colors + [0] * 765
 
 
-def test_save_unsupported_mode(tmp_path):
+def test_save_unsupported_mode(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.im")
     im = hopper("HSV")
     with pytest.raises(ValueError):
         im.save(out)
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
         ImImagePlugin.ImImageFile(invalid_file)
 
 
-def test_number():
+def test_number() -> None:
     assert ImImagePlugin.number("1.2") == 1.2
diff --git a/Tests/test_file_imt.py b/Tests/test_file_imt.py
index f56acc429..6957dfa0a 100644
--- a/Tests/test_file_imt.py
+++ b/Tests/test_file_imt.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import io
 
 import pytest
@@ -7,13 +9,13 @@ from PIL import Image, ImtImagePlugin
 from .helper import assert_image_equal_tofile
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open("Tests/images/bw_gradient.imt") as im:
         assert_image_equal_tofile(im, "Tests/images/bw_gradient.png")
 
 
 @pytest.mark.parametrize("data", (b"\n", b"\n-", b"width 1\n"))
-def test_invalid_file(data):
+def test_invalid_file(data: bytes) -> None:
     with io.BytesIO(data) as fp:
         with pytest.raises(SyntaxError):
             ImtImagePlugin.ImtImageFile(fp)
diff --git a/Tests/test_file_iptc.py b/Tests/test_file_iptc.py
index 2d99528d3..8a7c59fb1 100644
--- a/Tests/test_file_iptc.py
+++ b/Tests/test_file_iptc.py
@@ -1,14 +1,30 @@
+from __future__ import annotations
+
 import sys
-from io import StringIO
+from io import BytesIO, StringIO
+
+import pytest
 
 from PIL import Image, IptcImagePlugin
 
-from .helper import hopper
+from .helper import assert_image_equal, hopper
 
 TEST_FILE = "Tests/images/iptc.jpg"
 
 
-def test_getiptcinfo_jpg_none():
+def test_open() -> None:
+    expected = Image.new("L", (1, 1))
+
+    f = BytesIO(
+        b"\x1c\x03<\x00\x02\x01\x00\x1c\x03x\x00\x01\x01\x1c\x03\x14\x00\x01\x01"
+        b"\x1c\x03\x1e\x00\x01\x01\x1c\x08\n\x00\x01\x00"
+    )
+    with Image.open(f) as im:
+        assert im.tile == [("iptc", (0, 0, 1, 1), 25, "raw")]
+        assert_image_equal(im, expected)
+
+
+def test_getiptcinfo_jpg_none() -> None:
     # Arrange
     with hopper() as im:
         # Act
@@ -18,7 +34,7 @@ def test_getiptcinfo_jpg_none():
     assert iptc is None
 
 
-def test_getiptcinfo_jpg_found():
+def test_getiptcinfo_jpg_found() -> None:
     # Arrange
     with Image.open(TEST_FILE) as im:
         # Act
@@ -30,7 +46,48 @@ def test_getiptcinfo_jpg_found():
     assert iptc[(2, 101)] == b"Hungary"
 
 
-def test_getiptcinfo_tiff_none():
+def test_getiptcinfo_fotostation() -> None:
+    # Arrange
+    with open(TEST_FILE, "rb") as fp:
+        data = bytearray(fp.read())
+    data[86] = 240
+    f = BytesIO(data)
+    with Image.open(f) as im:
+        # Act
+        iptc = IptcImagePlugin.getiptcinfo(im)
+
+    # Assert
+    assert iptc is not None
+    for tag in iptc.keys():
+        if tag[0] == 240:
+            return
+    pytest.fail("FotoStation tag not found")
+
+
+def test_getiptcinfo_zero_padding() -> None:
+    # Arrange
+    with Image.open(TEST_FILE) as im:
+        im.info["photoshop"][0x0404] += b"\x00\x00\x00"
+
+        # Act
+        iptc = IptcImagePlugin.getiptcinfo(im)
+
+    # Assert
+    assert isinstance(iptc, dict)
+    assert len(iptc) == 3
+
+
+def test_getiptcinfo_tiff() -> None:
+    # Arrange
+    with Image.open("Tests/images/hopper.Lab.tif") as im:
+        # Act
+        iptc = IptcImagePlugin.getiptcinfo(im)
+
+    # Assert
+    assert iptc == {(1, 90): b"\x1b%G", (2, 0): b"\xcf\xc0"}
+
+
+def test_getiptcinfo_tiff_none() -> None:
     # Arrange
     with Image.open("Tests/images/hopper.tif") as im:
         # Act
@@ -40,29 +97,33 @@ def test_getiptcinfo_tiff_none():
     assert iptc is None
 
 
-def test_i():
+def test_i() -> None:
     # Arrange
     c = b"a"
 
     # Act
-    ret = IptcImagePlugin.i(c)
+    with pytest.warns(DeprecationWarning):
+        ret = IptcImagePlugin.i(c)
 
     # Assert
     assert ret == 97
 
 
-def test_dump():
+def test_dump(monkeypatch: pytest.MonkeyPatch) -> None:
     # Arrange
     c = b"abc"
     # Temporarily redirect stdout
-    old_stdout = sys.stdout
-    sys.stdout = mystdout = StringIO()
+    mystdout = StringIO()
+    monkeypatch.setattr(sys, "stdout", mystdout)
 
     # Act
-    IptcImagePlugin.dump(c)
-
-    # Reset stdout
-    sys.stdout = old_stdout
+    with pytest.warns(DeprecationWarning):
+        IptcImagePlugin.dump(c)
 
     # Assert
     assert mystdout.getvalue() == "61 62 63 \n"
+
+
+def test_pad_deprecation() -> None:
+    with pytest.warns(DeprecationWarning):
+        assert IptcImagePlugin.PAD == b"\0\0\0\0"
diff --git a/Tests/test_file_jpeg.py b/Tests/test_file_jpeg.py
index 0247527f5..347a162a5 100644
--- a/Tests/test_file_jpeg.py
+++ b/Tests/test_file_jpeg.py
@@ -1,7 +1,12 @@
+from __future__ import annotations
+
 import os
 import re
 import warnings
 from io import BytesIO
+from pathlib import Path
+from types import ModuleType
+from typing import Any, cast
 
 import pytest
 
@@ -29,6 +34,7 @@ from .helper import (
     skip_unless_feature,
 )
 
+ElementTree: ModuleType | None
 try:
     from defusedxml import ElementTree
 except ImportError:
@@ -39,16 +45,22 @@ TEST_FILE = "Tests/images/hopper.jpg"
 
 @skip_unless_feature("jpg")
 class TestFileJpeg:
-    def roundtrip(self, im, **options):
+    def roundtrip_with_bytes(
+        self, im: Image.Image, **options: Any
+    ) -> tuple[JpegImagePlugin.JpegImageFile, int]:
         out = BytesIO()
         im.save(out, "JPEG", **options)
         test_bytes = out.tell()
         out.seek(0)
-        im = Image.open(out)
-        im.bytes = test_bytes  # for testing only
-        return im
+        reloaded = cast(JpegImagePlugin.JpegImageFile, Image.open(out))
+        return reloaded, test_bytes
 
-    def gen_random_image(self, size, mode="RGB"):
+    def roundtrip(
+        self, im: Image.Image, **options: Any
+    ) -> JpegImagePlugin.JpegImageFile:
+        return self.roundtrip_with_bytes(im, **options)[0]
+
+    def gen_random_image(self, size: tuple[int, int], mode: str = "RGB") -> Image.Image:
         """Generates a very hard to compress file
         :param size: tuple
         :param mode: optional image mode
@@ -56,9 +68,11 @@ class TestFileJpeg:
         """
         return Image.frombytes(mode, size, os.urandom(size[0] * size[1] * len(mode)))
 
-    def test_sanity(self):
+    def test_sanity(self) -> None:
         # internal version number
-        assert re.search(r"\d+\.\d+$", features.version_codec("jpg"))
+        version = features.version_codec("jpg")
+        assert version is not None
+        assert re.search(r"\d+\.\d+$", version)
 
         with Image.open(TEST_FILE) as im:
             im.load()
@@ -68,13 +82,13 @@ class TestFileJpeg:
             assert im.get_format_mimetype() == "image/jpeg"
 
     @pytest.mark.parametrize("size", ((1, 0), (0, 1), (0, 0)))
-    def test_zero(self, size, tmp_path):
+    def test_zero(self, size: tuple[int, int], tmp_path: Path) -> None:
         f = str(tmp_path / "temp.jpg")
         im = Image.new("RGB", size)
         with pytest.raises(ValueError):
             im.save(f)
 
-    def test_app(self):
+    def test_app(self) -> None:
         # Test APP/COM reader (@PIL135)
         with Image.open(TEST_FILE) as im:
             assert im.applist[0] == ("APP0", b"JFIF\x00\x01\x01\x01\x00`\x00`\x00\x00")
@@ -87,7 +101,7 @@ class TestFileJpeg:
             assert im.info["comment"] == b"File written by Adobe Photoshop\xa8 4.0\x00"
             assert im.app["COM"] == im.info["comment"]
 
-    def test_comment_write(self):
+    def test_comment_write(self) -> None:
         with Image.open(TEST_FILE) as im:
             assert im.info["comment"] == b"File written by Adobe Photoshop\xa8 4.0\x00"
 
@@ -105,15 +119,13 @@ class TestFileJpeg:
                     assert "comment" not in reloaded.info
 
             # Test that a comment argument overrides the default comment
-            for comment in ("Test comment text", b"Text comment text"):
+            for comment in ("Test comment text", b"Test comment text"):
                 out = BytesIO()
                 im.save(out, format="JPEG", comment=comment)
                 with Image.open(out) as reloaded:
-                    if not isinstance(comment, bytes):
-                        comment = comment.encode()
-                    assert reloaded.info["comment"] == comment
+                    assert reloaded.info["comment"] == b"Test comment text"
 
-    def test_cmyk(self):
+    def test_cmyk(self) -> None:
         # Test CMYK handling.  Thanks to Tim and Charlie for test data,
         # Michael for getting me to look one more time.
         f = "Tests/images/pil_sample_cmyk.jpg"
@@ -141,12 +153,25 @@ class TestFileJpeg:
             )
             assert k > 0.9
 
+    def test_rgb(self) -> None:
+        def getchannels(im: JpegImagePlugin.JpegImageFile) -> tuple[int, ...]:
+            return tuple(v[0] for v in im.layer)
+
+        im = hopper()
+        im_ycbcr = self.roundtrip(im)
+        assert getchannels(im_ycbcr) == (1, 2, 3)
+        assert_image_similar(im, im_ycbcr, 17)
+
+        im_rgb = self.roundtrip(im, keep_rgb=True)
+        assert getchannels(im_rgb) == (ord("R"), ord("G"), ord("B"))
+        assert_image_similar(im, im_rgb, 12)
+
     @pytest.mark.parametrize(
         "test_image_path",
         [TEST_FILE, "Tests/images/pil_sample_cmyk.jpg"],
     )
-    def test_dpi(self, test_image_path):
-        def test(xdpi, ydpi=None):
+    def test_dpi(self, test_image_path: str) -> None:
+        def test(xdpi: int, ydpi: int | None = None) -> tuple[int, int] | None:
             with Image.open(test_image_path) as im:
                 im = self.roundtrip(im, dpi=(xdpi, ydpi or xdpi))
             return im.info.get("dpi")
@@ -159,7 +184,7 @@ class TestFileJpeg:
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )
-    def test_icc(self, tmp_path):
+    def test_icc(self, tmp_path: Path) -> None:
         # Test ICC support
         with Image.open("Tests/images/rgb.jpg") as im1:
             icc_profile = im1.info["icc_profile"]
@@ -191,7 +216,7 @@ class TestFileJpeg:
             ImageFile.MAXBLOCK * 4 + 3,  # large block
         ),
     )
-    def test_icc_big(self, n):
+    def test_icc_big(self, n: int) -> None:
         # Make sure that the "extra" support handles large blocks
         # The ICC APP marker can store 65519 bytes per marker, so
         # using a 4-byte test code should allow us to detect out of
@@ -204,7 +229,7 @@ class TestFileJpeg:
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )
-    def test_large_icc_meta(self, tmp_path):
+    def test_large_icc_meta(self, tmp_path: Path) -> None:
         # https://github.com/python-pillow/Pillow/issues/148
         # Sometimes the meta data on the icc_profile block is bigger than
         # Image.MAXBLOCK or the image size.
@@ -214,59 +239,66 @@ class TestFileJpeg:
             # Should not raise OSError for image with icc larger than image size.
             im.save(
                 f,
-                format="JPEG",
                 progressive=True,
                 quality=95,
                 icc_profile=icc_profile,
                 optimize=True,
             )
 
-    def test_optimize(self):
-        im1 = self.roundtrip(hopper())
-        im2 = self.roundtrip(hopper(), optimize=0)
-        im3 = self.roundtrip(hopper(), optimize=1)
+        with Image.open("Tests/images/flower2.jpg") as im:
+            f = str(tmp_path / "temp2.jpg")
+            im.save(f, progressive=True, quality=94, icc_profile=b" " * 53955)
+
+        with Image.open("Tests/images/flower2.jpg") as im:
+            f = str(tmp_path / "temp3.jpg")
+            im.save(f, progressive=True, quality=94, exif=b" " * 43668)
+
+    def test_optimize(self) -> None:
+        im1, im1_bytes = self.roundtrip_with_bytes(hopper())
+        im2, im2_bytes = self.roundtrip_with_bytes(hopper(), optimize=0)
+        im3, im3_bytes = self.roundtrip_with_bytes(hopper(), optimize=1)
         assert_image_equal(im1, im2)
         assert_image_equal(im1, im3)
-        assert im1.bytes >= im2.bytes
-        assert im1.bytes >= im3.bytes
+        assert im1_bytes >= im2_bytes
+        assert im1_bytes >= im3_bytes
 
-    def test_optimize_large_buffer(self, tmp_path):
+    def test_optimize_large_buffer(self, tmp_path: Path) -> None:
         # https://github.com/python-pillow/Pillow/issues/148
         f = str(tmp_path / "temp.jpg")
         # this requires ~ 1.5x Image.MAXBLOCK
         im = Image.new("RGB", (4096, 4096), 0xFF3333)
         im.save(f, format="JPEG", optimize=True)
 
-    def test_progressive(self):
-        im1 = self.roundtrip(hopper())
+    def test_progressive(self) -> None:
+        im1, im1_bytes = self.roundtrip_with_bytes(hopper())
         im2 = self.roundtrip(hopper(), progressive=False)
-        im3 = self.roundtrip(hopper(), progressive=True)
+        im3, im3_bytes = self.roundtrip_with_bytes(hopper(), progressive=True)
         assert not im1.info.get("progressive")
         assert not im2.info.get("progressive")
         assert im3.info.get("progressive")
 
         assert_image_equal(im1, im3)
-        assert im1.bytes >= im3.bytes
+        assert im1_bytes >= im3_bytes
 
-    def test_progressive_large_buffer(self, tmp_path):
+    def test_progressive_large_buffer(self, tmp_path: Path) -> None:
         f = str(tmp_path / "temp.jpg")
         # this requires ~ 1.5x Image.MAXBLOCK
         im = Image.new("RGB", (4096, 4096), 0xFF3333)
         im.save(f, format="JPEG", progressive=True)
 
-    def test_progressive_large_buffer_highest_quality(self, tmp_path):
+    def test_progressive_large_buffer_highest_quality(self, tmp_path: Path) -> None:
         f = str(tmp_path / "temp.jpg")
         im = self.gen_random_image((255, 255))
         # this requires more bytes than pixels in the image
         im.save(f, format="JPEG", progressive=True, quality=100)
 
-    def test_progressive_cmyk_buffer(self):
+    def test_progressive_cmyk_buffer(self) -> None:
         # Issue 2272, quality 90 cmyk image is tripping the large buffer bug.
         f = BytesIO()
         im = self.gen_random_image((256, 256), "CMYK")
         im.save(f, format="JPEG", progressive=True, quality=94)
 
-    def test_large_exif(self, tmp_path):
+    def test_large_exif(self, tmp_path: Path) -> None:
         # https://github.com/python-pillow/Pillow/issues/148
         f = str(tmp_path / "temp.jpg")
         im = hopper()
@@ -275,12 +307,12 @@ class TestFileJpeg:
         with pytest.raises(ValueError):
             im.save(f, "JPEG", quality=90, exif=b"1" * 65534)
 
-    def test_exif_typeerror(self):
+    def test_exif_typeerror(self) -> None:
         with Image.open("Tests/images/exif_typeerror.jpg") as im:
             # Should not raise a TypeError
             im._getexif()
 
-    def test_exif_gps(self, tmp_path):
+    def test_exif_gps(self, tmp_path: Path) -> None:
         expected_exif_gps = {
             0: b"\x00\x00\x00\x01",
             2: 4294967295,
@@ -305,7 +337,7 @@ class TestFileJpeg:
             exif = reloaded._getexif()
             assert exif[gps_index] == expected_exif_gps
 
-    def test_empty_exif_gps(self):
+    def test_empty_exif_gps(self) -> None:
         with Image.open("Tests/images/empty_gps_ifd.jpg") as im:
             exif = im.getexif()
             del exif[0x8769]
@@ -317,13 +349,14 @@ class TestFileJpeg:
             assert exif.get_ifd(0x8825) == {}
 
             transposed = ImageOps.exif_transpose(im)
+        assert transposed is not None
         exif = transposed.getexif()
         assert exif.get_ifd(0x8825) == {}
 
         # Assert that it was transposed
         assert 0x0112 not in exif
 
-    def test_exif_equality(self):
+    def test_exif_equality(self) -> None:
         # In 7.2.0, Exif rationals were changed to be read as
         # TiffImagePlugin.IFDRational. This class had a bug in __eq__,
         # breaking the self-equality of Exif data
@@ -333,7 +366,7 @@ class TestFileJpeg:
                 exifs.append(im._getexif())
         assert exifs[0] == exifs[1]
 
-    def test_exif_rollback(self):
+    def test_exif_rollback(self) -> None:
         # rolling back exif support in 3.1 to pre-3.0 formatting.
         # expected from 2.9, with b/u qualifiers switched for 3.2 compatibility
         # this test passes on 2.9 and 3.1, but not 3.0
@@ -368,12 +401,12 @@ class TestFileJpeg:
         for tag, value in expected_exif.items():
             assert value == exif[tag]
 
-    def test_exif_gps_typeerror(self):
+    def test_exif_gps_typeerror(self) -> None:
         with Image.open("Tests/images/exif_gps_typeerror.jpg") as im:
             # Should not raise a TypeError
             im._getexif()
 
-    def test_progressive_compat(self):
+    def test_progressive_compat(self) -> None:
         im1 = self.roundtrip(hopper())
         assert not im1.info.get("progressive")
         assert not im1.info.get("progression")
@@ -394,67 +427,72 @@ class TestFileJpeg:
         assert im3.info.get("progressive")
         assert im3.info.get("progression")
 
-    def test_quality(self):
-        im1 = self.roundtrip(hopper())
-        im2 = self.roundtrip(hopper(), quality=50)
+    def test_quality(self) -> None:
+        im1, im1_bytes = self.roundtrip_with_bytes(hopper())
+        im2, im2_bytes = self.roundtrip_with_bytes(hopper(), quality=50)
         assert_image(im1, im2.mode, im2.size)
-        assert im1.bytes >= im2.bytes
+        assert im1_bytes >= im2_bytes
 
-        im3 = self.roundtrip(hopper(), quality=0)
+        im3, im3_bytes = self.roundtrip_with_bytes(hopper(), quality=0)
         assert_image(im1, im3.mode, im3.size)
-        assert im2.bytes > im3.bytes
+        assert im2_bytes > im3_bytes
 
-    def test_smooth(self):
+    def test_smooth(self) -> None:
         im1 = self.roundtrip(hopper())
         im2 = self.roundtrip(hopper(), smooth=100)
         assert_image(im1, im2.mode, im2.size)
 
-    def test_subsampling(self):
-        def getsampling(im):
+    def test_subsampling(self) -> None:
+        def getsampling(
+            im: JpegImagePlugin.JpegImageFile,
+        ) -> tuple[int, int, int, int, int, int]:
             layer = im.layer
             return layer[0][1:3] + layer[1][1:3] + layer[2][1:3]
 
         # experimental API
-        im = self.roundtrip(hopper(), subsampling=-1)  # default
-        assert getsampling(im) == (2, 2, 1, 1, 1, 1)
-        im = self.roundtrip(hopper(), subsampling=0)  # 4:4:4
-        assert getsampling(im) == (1, 1, 1, 1, 1, 1)
-        im = self.roundtrip(hopper(), subsampling=1)  # 4:2:2
-        assert getsampling(im) == (2, 1, 1, 1, 1, 1)
-        im = self.roundtrip(hopper(), subsampling=2)  # 4:2:0
-        assert getsampling(im) == (2, 2, 1, 1, 1, 1)
-        im = self.roundtrip(hopper(), subsampling=3)  # default (undefined)
-        assert getsampling(im) == (2, 2, 1, 1, 1, 1)
+        for subsampling in (-1, 3):  # (default, invalid)
+            im = self.roundtrip(hopper(), subsampling=subsampling)
+            assert getsampling(im) == (2, 2, 1, 1, 1, 1)
+        for subsampling1 in (0, "4:4:4"):
+            im = self.roundtrip(hopper(), subsampling=subsampling1)
+            assert getsampling(im) == (1, 1, 1, 1, 1, 1)
+        for subsampling1 in (1, "4:2:2"):
+            im = self.roundtrip(hopper(), subsampling=subsampling1)
+            assert getsampling(im) == (2, 1, 1, 1, 1, 1)
+        for subsampling1 in (2, "4:2:0", "4:1:1"):
+            im = self.roundtrip(hopper(), subsampling=subsampling1)
+            assert getsampling(im) == (2, 2, 1, 1, 1, 1)
 
-        im = self.roundtrip(hopper(), subsampling="4:4:4")
-        assert getsampling(im) == (1, 1, 1, 1, 1, 1)
-        im = self.roundtrip(hopper(), subsampling="4:2:2")
-        assert getsampling(im) == (2, 1, 1, 1, 1, 1)
-        im = self.roundtrip(hopper(), subsampling="4:2:0")
-        assert getsampling(im) == (2, 2, 1, 1, 1, 1)
-        im = self.roundtrip(hopper(), subsampling="4:1:1")
-        assert getsampling(im) == (2, 2, 1, 1, 1, 1)
+        # RGB colorspace
+        for subsampling1 in (-1, 0, "4:4:4"):
+            # "4:4:4" doesn't really make sense for RGB, but the conversion
+            # to an integer happens at a higher level
+            im = self.roundtrip(hopper(), keep_rgb=True, subsampling=subsampling1)
+            assert getsampling(im) == (1, 1, 1, 1, 1, 1)
+        for subsampling1 in (1, "4:2:2", 2, "4:2:0", 3):
+            with pytest.raises(OSError):
+                self.roundtrip(hopper(), keep_rgb=True, subsampling=subsampling1)
 
         with pytest.raises(TypeError):
             self.roundtrip(hopper(), subsampling="1:1:1")
 
-    def test_exif(self):
+    def test_exif(self) -> None:
         with Image.open("Tests/images/pil_sample_rgb.jpg") as im:
             info = im._getexif()
             assert info[305] == "Adobe Photoshop CS Macintosh"
 
-    def test_get_child_images(self):
+    def test_get_child_images(self) -> None:
         with Image.open("Tests/images/flower.jpg") as im:
             ims = im.get_child_images()
 
         assert len(ims) == 1
         assert_image_similar_tofile(ims[0], "Tests/images/flower_thumbnail.png", 2.1)
 
-    def test_mp(self):
+    def test_mp(self) -> None:
         with Image.open("Tests/images/pil_sample_rgb.jpg") as im:
             assert im._getmp() is None
 
-    def test_quality_keep(self, tmp_path):
+    def test_quality_keep(self, tmp_path: Path) -> None:
         # RGB
         with Image.open("Tests/images/hopper.jpg") as im:
             f = str(tmp_path / "temp.jpg")
@@ -468,13 +506,13 @@ class TestFileJpeg:
             f = str(tmp_path / "temp.jpg")
             im.save(f, quality="keep")
 
-    def test_junk_jpeg_header(self):
+    def test_junk_jpeg_header(self) -> None:
         # https://github.com/python-pillow/Pillow/issues/630
         filename = "Tests/images/junk_jpeg_header.jpg"
         with Image.open(filename):
             pass
 
-    def test_ff00_jpeg_header(self):
+    def test_ff00_jpeg_header(self) -> None:
         filename = "Tests/images/jpeg_ff00_header.jpg"
         with Image.open(filename):
             pass
@@ -482,7 +520,7 @@ class TestFileJpeg:
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )
-    def test_truncated_jpeg_should_read_all_the_data(self):
+    def test_truncated_jpeg_should_read_all_the_data(self) -> None:
         filename = "Tests/images/truncated_jpeg.jpg"
         ImageFile.LOAD_TRUNCATED_IMAGES = True
         with Image.open(filename) as im:
@@ -490,7 +528,7 @@ class TestFileJpeg:
             ImageFile.LOAD_TRUNCATED_IMAGES = False
             assert im.getbbox() is not None
 
-    def test_truncated_jpeg_throws_oserror(self):
+    def test_truncated_jpeg_throws_oserror(self) -> None:
         filename = "Tests/images/truncated_jpeg.jpg"
         with Image.open(filename) as im:
             with pytest.raises(OSError):
@@ -503,12 +541,12 @@ class TestFileJpeg:
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )
-    def test_qtables(self, tmp_path):
-        def _n_qtables_helper(n, test_file):
+    def test_qtables(self) -> None:
+        def _n_qtables_helper(n: int, test_file: str) -> None:
+            b = BytesIO()
             with Image.open(test_file) as im:
-                f = str(tmp_path / "temp.jpg")
-                im.save(f, qtables=[[n] * 64] * n)
-            with Image.open(f) as im:
+                im.save(b, "JPEG", qtables=[[n] * 64] * n)
+            with Image.open(b) as im:
                 assert len(im.quantization) == n
                 reloaded = self.roundtrip(im, qtables="keep")
                 assert im.quantization == reloaded.quantization
@@ -612,45 +650,62 @@ class TestFileJpeg:
             with pytest.raises(ValueError):
                 self.roundtrip(im, qtables=[[1, 2, 3, 4]])
 
-    def test_load_16bit_qtables(self):
+    def test_load_16bit_qtables(self) -> None:
         with Image.open("Tests/images/hopper_16bit_qtables.jpg") as im:
             assert len(im.quantization) == 2
             assert len(im.quantization[0]) == 64
             assert max(im.quantization[0]) > 255
 
-    def test_save_multiple_16bit_qtables(self):
+    def test_save_multiple_16bit_qtables(self) -> None:
         with Image.open("Tests/images/hopper_16bit_qtables.jpg") as im:
             im2 = self.roundtrip(im, qtables="keep")
             assert im.quantization == im2.quantization
 
-    def test_save_single_16bit_qtable(self):
+    def test_save_single_16bit_qtable(self) -> None:
         with Image.open("Tests/images/hopper_16bit_qtables.jpg") as im:
             im2 = self.roundtrip(im, qtables={0: im.quantization[0]})
             assert len(im2.quantization) == 1
             assert im2.quantization[0] == im.quantization[0]
 
-    def test_save_low_quality_baseline_qtables(self):
+    def test_save_low_quality_baseline_qtables(self) -> None:
         with Image.open(TEST_FILE) as im:
             im2 = self.roundtrip(im, quality=10)
             assert len(im2.quantization) == 2
             assert max(im2.quantization[0]) <= 255
             assert max(im2.quantization[1]) <= 255
 
+    @pytest.mark.parametrize(
+        "blocks, rows, markers",
+        ((0, 0, 0), (1, 0, 15), (3, 0, 5), (8, 0, 1), (0, 1, 3), (0, 2, 1)),
+    )
+    def test_restart_markers(self, blocks: int, rows: int, markers: int) -> None:
+        im = Image.new("RGB", (32, 32))  # 16 MCUs
+        out = BytesIO()
+        im.save(
+            out,
+            format="JPEG",
+            restart_marker_blocks=blocks,
+            restart_marker_rows=rows,
+            # force 8x8 pixel MCUs
+            subsampling=0,
+        )
+        assert len(re.findall(b"\xff[\xd0-\xd7]", out.getvalue())) == markers
+
     @pytest.mark.skipif(not djpeg_available(), reason="djpeg not available")
-    def test_load_djpeg(self):
+    def test_load_djpeg(self) -> None:
         with Image.open(TEST_FILE) as img:
             img.load_djpeg()
             assert_image_similar_tofile(img, TEST_FILE, 5)
 
     @pytest.mark.skipif(not cjpeg_available(), reason="cjpeg not available")
-    def test_save_cjpeg(self, tmp_path):
+    def test_save_cjpeg(self, tmp_path: Path) -> None:
         with Image.open(TEST_FILE) as img:
             tempfile = str(tmp_path / "temp.jpg")
-            JpegImagePlugin._save_cjpeg(img, 0, tempfile)
+            JpegImagePlugin._save_cjpeg(img, BytesIO(), tempfile)
             # Default save quality is 75%, so a tiny bit of difference is alright
             assert_image_similar_tofile(img, tempfile, 17)
 
-    def test_no_duplicate_0x1001_tag(self):
+    def test_no_duplicate_0x1001_tag(self) -> None:
         # Arrange
         tag_ids = {v: k for k, v in ExifTags.TAGS.items()}
 
@@ -658,7 +713,7 @@ class TestFileJpeg:
         assert tag_ids["RelatedImageWidth"] == 0x1001
         assert tag_ids["RelatedImageLength"] == 0x1002
 
-    def test_MAXBLOCK_scaling(self, tmp_path):
+    def test_MAXBLOCK_scaling(self, tmp_path: Path) -> None:
         im = self.gen_random_image((512, 512))
         f = str(tmp_path / "temp.jpeg")
         im.save(f, quality=100, optimize=True)
@@ -669,7 +724,7 @@ class TestFileJpeg:
             reloaded.save(f, quality="keep", progressive=True)
             reloaded.save(f, quality="keep", optimize=True)
 
-    def test_bad_mpo_header(self):
+    def test_bad_mpo_header(self) -> None:
         """Treat unknown MPO as JPEG"""
         # Arrange
 
@@ -681,20 +736,20 @@ class TestFileJpeg:
             assert im.format == "JPEG"
 
     @pytest.mark.parametrize("mode", ("1", "L", "RGB", "RGBX", "CMYK", "YCbCr"))
-    def test_save_correct_modes(self, mode):
+    def test_save_correct_modes(self, mode: str) -> None:
         out = BytesIO()
         img = Image.new(mode, (20, 20))
         img.save(out, "JPEG")
 
     @pytest.mark.parametrize("mode", ("LA", "La", "RGBA", "RGBa", "P"))
-    def test_save_wrong_modes(self, mode):
+    def test_save_wrong_modes(self, mode: str) -> None:
         # ref https://github.com/python-pillow/Pillow/issues/2005
         out = BytesIO()
         img = Image.new(mode, (20, 20))
         with pytest.raises(OSError):
             img.save(out, "JPEG")
 
-    def test_save_tiff_with_dpi(self, tmp_path):
+    def test_save_tiff_with_dpi(self, tmp_path: Path) -> None:
         # Arrange
         outfile = str(tmp_path / "temp.tif")
         with Image.open("Tests/images/hopper.tif") as im:
@@ -706,7 +761,7 @@ class TestFileJpeg:
                 reloaded.load()
                 assert im.info["dpi"] == reloaded.info["dpi"]
 
-    def test_save_dpi_rounding(self, tmp_path):
+    def test_save_dpi_rounding(self, tmp_path: Path) -> None:
         outfile = str(tmp_path / "temp.jpg")
         with Image.open("Tests/images/hopper.jpg") as im:
             im.save(outfile, dpi=(72.2, 72.2))
@@ -719,7 +774,7 @@ class TestFileJpeg:
         with Image.open(outfile) as reloaded:
             assert reloaded.info["dpi"] == (73, 73)
 
-    def test_dpi_tuple_from_exif(self):
+    def test_dpi_tuple_from_exif(self) -> None:
         # Arrange
         # This Photoshop CC 2017 image has DPI in EXIF not metadata
         # EXIF XResolution is (2000000, 10000)
@@ -727,7 +782,7 @@ class TestFileJpeg:
             # Act / Assert
             assert im.info.get("dpi") == (200, 200)
 
-    def test_dpi_int_from_exif(self):
+    def test_dpi_int_from_exif(self) -> None:
         # Arrange
         # This image has DPI in EXIF not metadata
         # EXIF XResolution is 72
@@ -735,7 +790,7 @@ class TestFileJpeg:
             # Act / Assert
             assert im.info.get("dpi") == (72, 72)
 
-    def test_dpi_from_dpcm_exif(self):
+    def test_dpi_from_dpcm_exif(self) -> None:
         # Arrange
         # This is photoshop-200dpi.jpg with EXIF resolution unit set to cm:
         # exiftool -exif:ResolutionUnit=cm photoshop-200dpi.jpg
@@ -743,7 +798,7 @@ class TestFileJpeg:
             # Act / Assert
             assert im.info.get("dpi") == (508, 508)
 
-    def test_dpi_exif_zero_division(self):
+    def test_dpi_exif_zero_division(self) -> None:
         # Arrange
         # This is photoshop-200dpi.jpg with EXIF resolution set to 0/0:
         # exiftool -XResolution=0/0 -YResolution=0/0 photoshop-200dpi.jpg
@@ -752,7 +807,7 @@ class TestFileJpeg:
             # This should return the default, and not raise a ZeroDivisionError
             assert im.info.get("dpi") == (72, 72)
 
-    def test_dpi_exif_string(self):
+    def test_dpi_exif_string(self) -> None:
         # Arrange
         # 0x011A tag in this exif contains string '300300\x02'
         with Image.open("Tests/images/broken_exif_dpi.jpg") as im:
@@ -760,7 +815,14 @@ class TestFileJpeg:
             # This should return the default
             assert im.info.get("dpi") == (72, 72)
 
-    def test_no_dpi_in_exif(self):
+    def test_dpi_exif_truncated(self) -> None:
+        # Arrange
+        with Image.open("Tests/images/truncated_exif_dpi.jpg") as im:
+            # Act / Assert
+            # This should return the default
+            assert im.info.get("dpi") == (72, 72)
+
+    def test_no_dpi_in_exif(self) -> None:
         # Arrange
         # This is photoshop-200dpi.jpg with resolution removed from EXIF:
         # exiftool "-*resolution*"= photoshop-200dpi.jpg
@@ -770,7 +832,7 @@ class TestFileJpeg:
             # https://exiv2.org/tags.html
             assert im.info.get("dpi") == (72, 72)
 
-    def test_invalid_exif(self):
+    def test_invalid_exif(self) -> None:
         # This is no-dpi-in-exif with the tiff header of the exif block
         # hexedited from MM * to FF FF FF FF
         with Image.open("Tests/images/invalid-exif.jpg") as im:
@@ -781,26 +843,28 @@ class TestFileJpeg:
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )
-    def test_exif_x_resolution(self, tmp_path):
+    def test_exif_x_resolution(self, tmp_path: Path) -> None:
         with Image.open("Tests/images/flower.jpg") as im:
             exif = im.getexif()
             assert exif[282] == 180
 
             out = str(tmp_path / "out.jpg")
             with warnings.catch_warnings():
+                warnings.simplefilter("error")
+
                 im.save(out, exif=exif)
 
         with Image.open(out) as reloaded:
             assert reloaded.getexif()[282] == 180
 
-    def test_invalid_exif_x_resolution(self):
+    def test_invalid_exif_x_resolution(self) -> None:
         # When no x or y resolution is defined in EXIF
         with Image.open("Tests/images/invalid-exif-without-x-resolution.jpg") as im:
             # This should return the default, and not a ValueError or
             # OSError for an unidentified image.
             assert im.info.get("dpi") == (72, 72)
 
-    def test_ifd_offset_exif(self):
+    def test_ifd_offset_exif(self) -> None:
         # Arrange
         # This image has been manually hexedited to have an IFD offset of 10,
         # in contrast to normal 8
@@ -808,10 +872,14 @@ class TestFileJpeg:
             # Act / Assert
             assert im._getexif()[306] == "2017:03:13 23:03:09"
 
+    def test_multiple_exif(self) -> None:
+        with Image.open("Tests/images/multiple_exif.jpg") as im:
+            assert im.getexif()[270] == "firstsecond"
+
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )
-    def test_photoshop(self):
+    def test_photoshop(self) -> None:
         with Image.open("Tests/images/photoshop-200dpi.jpg") as im:
             assert im.info["photoshop"][0x03ED] == {
                 "XResolution": 200.0,
@@ -828,14 +896,14 @@ class TestFileJpeg:
         with Image.open("Tests/images/app13.jpg") as im:
             assert "photoshop" not in im.info
 
-    def test_photoshop_malformed_and_multiple(self):
+    def test_photoshop_malformed_and_multiple(self) -> None:
         with Image.open("Tests/images/app13-multiple.jpg") as im:
             assert "photoshop" in im.info
             assert 24 == len(im.info["photoshop"])
             apps_13_lengths = [len(v) for k, v in im.applist if k == "APP13"]
             assert [65504, 24] == apps_13_lengths
 
-    def test_adobe_transform(self):
+    def test_adobe_transform(self) -> None:
         with Image.open("Tests/images/pil_sample_rgb.jpg") as im:
             assert im.info["adobe_transform"] == 1
 
@@ -849,35 +917,40 @@ class TestFileJpeg:
             assert "adobe" in im.info
             assert "adobe_transform" not in im.info
 
-    def test_icc_after_SOF(self):
+    def test_icc_after_SOF(self) -> None:
         with Image.open("Tests/images/icc-after-SOF.jpg") as im:
             assert im.info["icc_profile"] == b"profile"
 
-    def test_jpeg_magic_number(self):
+    def test_jpeg_magic_number(self, monkeypatch: pytest.MonkeyPatch) -> None:
         size = 4097
         buffer = BytesIO(b"\xFF" * size)  # Many xFF bytes
-        buffer.max_pos = 0
+        max_pos = 0
         orig_read = buffer.read
 
-        def read(n=-1):
+        def read(n: int | None = -1) -> bytes:
+            nonlocal max_pos
             res = orig_read(n)
-            buffer.max_pos = max(buffer.max_pos, buffer.tell())
+            max_pos = max(max_pos, buffer.tell())
             return res
 
-        buffer.read = read
+        monkeypatch.setattr(buffer, "read", read)
         with pytest.raises(UnidentifiedImageError):
             with Image.open(buffer):
                 pass
 
         # Assert the entire file has not been read
-        assert 0 < buffer.max_pos < size
+        assert 0 < max_pos < size
 
-    def test_getxmp(self):
+    def test_getxmp(self) -> None:
         with Image.open("Tests/images/xmp_test.jpg") as im:
             if ElementTree is None:
-                with pytest.warns(UserWarning):
+                with pytest.warns(
+                    UserWarning,
+                    match="XMP data cannot be read without defusedxml dependency",
+                ):
                     assert im.getxmp() == {}
             else:
+                assert "xmp" in im.info
                 xmp = im.getxmp()
 
                 description = xmp["xmpmeta"]["RDF"]["Description"]
@@ -898,21 +971,54 @@ class TestFileJpeg:
             with Image.open("Tests/images/hopper.jpg") as im:
                 assert im.getxmp() == {}
 
+    def test_getxmp_no_prefix(self) -> None:
+        with Image.open("Tests/images/xmp_no_prefix.jpg") as im:
+            if ElementTree is None:
+                with pytest.warns(
+                    UserWarning,
+                    match="XMP data cannot be read without defusedxml dependency",
+                ):
+                    assert im.getxmp() == {}
+            else:
+                assert im.getxmp() == {"xmpmeta": {"key": "value"}}
+
+    def test_getxmp_padded(self) -> None:
+        with Image.open("Tests/images/xmp_padded.jpg") as im:
+            if ElementTree is None:
+                with pytest.warns(
+                    UserWarning,
+                    match="XMP data cannot be read without defusedxml dependency",
+                ):
+                    assert im.getxmp() == {}
+            else:
+                assert im.getxmp() == {"xmpmeta": None}
+
+    def test_save_xmp(self, tmp_path: Path) -> None:
+        f = str(tmp_path / "temp.jpg")
+        im = hopper()
+        im.save(f, xmp=b"XMP test")
+        with Image.open(f) as reloaded:
+            assert reloaded.info["xmp"] == b"XMP test"
+
+        im.info["xmp"] = b"1" * 65504
+        im.save(f)
+        with Image.open(f) as reloaded:
+            assert reloaded.info["xmp"] == b"1" * 65504
+
+        with pytest.raises(ValueError):
+            im.save(f, xmp=b"1" * 65505)
+
     @pytest.mark.timeout(timeout=1)
-    def test_eof(self):
+    def test_eof(self) -> None:
         # Even though this decoder never says that it is finished
         # the image should still end when there is no new data
         class InfiniteMockPyDecoder(ImageFile.PyDecoder):
-            def decode(self, buffer):
+            def decode(
+                self, buffer: bytes | Image.SupportsArrayInterface
+            ) -> tuple[int, int]:
                 return 0, 0
 
-        decoder = InfiniteMockPyDecoder(None)
-
-        def closure(mode, *args):
-            decoder.__init__(mode, *args)
-            return decoder
-
-        Image.register_decoder("INFINITE", closure)
+        Image.register_decoder("INFINITE", InfiniteMockPyDecoder)
 
         with Image.open(TEST_FILE) as im:
             im.tile = [
@@ -922,24 +1028,57 @@ class TestFileJpeg:
             im.load()
             ImageFile.LOAD_TRUNCATED_IMAGES = False
 
-    def test_repr_jpeg(self):
+    def test_separate_tables(self) -> None:
         im = hopper()
+        data = []  # [interchange, tables-only, image-only]
+        for streamtype in range(3):
+            out = BytesIO()
+            im.save(out, format="JPEG", streamtype=streamtype)
+            data.append(out.getvalue())
 
-        with Image.open(BytesIO(im._repr_jpeg_())) as repr_jpeg:
+        # SOI, EOI
+        for marker in b"\xff\xd8", b"\xff\xd9":
+            assert marker in data[1]
+            assert marker in data[2]
+        # DHT, DQT
+        for marker in b"\xff\xc4", b"\xff\xdb":
+            assert marker in data[1]
+            assert marker not in data[2]
+        # SOF0, SOS, APP0 (JFIF header)
+        for marker in b"\xff\xc0", b"\xff\xda", b"\xff\xe0":
+            assert marker not in data[1]
+            assert marker in data[2]
+
+        with Image.open(BytesIO(data[0])) as interchange_im:
+            with Image.open(BytesIO(data[1] + data[2])) as combined_im:
+                assert_image_equal(interchange_im, combined_im)
+
+    def test_repr_jpeg(self) -> None:
+        im = hopper()
+        b = im._repr_jpeg_()
+        assert b is not None
+
+        with Image.open(BytesIO(b)) as repr_jpeg:
             assert repr_jpeg.format == "JPEG"
             assert_image_similar(im, repr_jpeg, 17)
 
-    def test_repr_jpeg_error(self):
+    def test_repr_jpeg_error_returns_none(self) -> None:
         im = hopper("F")
 
-        with pytest.raises(ValueError):
-            im._repr_jpeg_()
+        assert im._repr_jpeg_() is None
+
+    def test_deprecation(self) -> None:
+        with Image.open(TEST_FILE) as im:
+            with pytest.warns(DeprecationWarning):
+                assert im.huffman_ac == {}
+            with pytest.warns(DeprecationWarning):
+                assert im.huffman_dc == {}
 
 
 @pytest.mark.skipif(not is_win32(), reason="Windows only")
 @skip_unless_feature("jpg")
 class TestFileCloseW32:
-    def test_fd_leak(self, tmp_path):
+    def test_fd_leak(self, tmp_path: Path) -> None:
         tmpfile = str(tmp_path / "temp.jpg")
 
         with Image.open("Tests/images/hopper.jpg") as im:
diff --git a/Tests/test_file_jpeg2k.py b/Tests/test_file_jpeg2k.py
index b6e8215f7..fbf72ae05 100644
--- a/Tests/test_file_jpeg2k.py
+++ b/Tests/test_file_jpeg2k.py
@@ -1,6 +1,11 @@
+from __future__ import annotations
+
 import os
 import re
+from collections.abc import Generator
 from io import BytesIO
+from pathlib import Path
+from typing import Any
 
 import pytest
 
@@ -25,28 +30,36 @@ EXTRA_DIR = "Tests/images/jpeg2000"
 
 pytestmark = skip_unless_feature("jpg_2000")
 
-test_card = Image.open("Tests/images/test-card.png")
-test_card.load()
+
+@pytest.fixture
+def card() -> Generator[ImageFile.ImageFile, None, None]:
+    with Image.open("Tests/images/test-card.png") as im:
+        im.load()
+    try:
+        yield im
+    finally:
+        im.close()
+
 
 # OpenJPEG 2.0.0 outputs this debugging message sometimes; we should
 # ignore it---it doesn't represent a test failure.
 # 'Not enough memory to handle tile data'
 
 
-def roundtrip(im, **options):
+def roundtrip(im: Image.Image, **options: Any) -> Image.Image:
     out = BytesIO()
     im.save(out, "JPEG2000", **options)
-    test_bytes = out.tell()
     out.seek(0)
     with Image.open(out) as im:
-        im.bytes = test_bytes  # for testing only
         im.load()
     return im
 
 
-def test_sanity():
+def test_sanity() -> None:
     # Internal version number
-    assert re.search(r"\d+\.\d+\.\d+$", features.version_codec("jpg_2000"))
+    version = features.version_codec("jpg_2000")
+    assert version is not None
+    assert re.search(r"\d+\.\d+\.\d+$", version)
 
     with Image.open("Tests/images/test-card-lossless.jp2") as im:
         px = im.load()
@@ -57,94 +70,96 @@ def test_sanity():
         assert im.get_format_mimetype() == "image/jp2"
 
 
-def test_jpf():
+def test_jpf() -> None:
     with Image.open("Tests/images/balloon.jpf") as im:
         assert im.format == "JPEG2000"
         assert im.get_format_mimetype() == "image/jpx"
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
         Jpeg2KImagePlugin.Jpeg2KImageFile(invalid_file)
 
 
-def test_bytesio():
+def test_bytesio(card: ImageFile.ImageFile) -> None:
     with open("Tests/images/test-card-lossless.jp2", "rb") as f:
         data = BytesIO(f.read())
-    assert_image_similar_tofile(test_card, data, 1.0e-3)
+    with Image.open(data) as im:
+        im.load()
+        assert_image_similar(im, card, 1.0e-3)
 
 
 # These two test pre-written JPEG 2000 files that were not written with
 # PIL (they were made using Adobe Photoshop)
 
 
-def test_lossless(tmp_path):
+def test_lossless(card: ImageFile.ImageFile, tmp_path: Path) -> None:
     with Image.open("Tests/images/test-card-lossless.jp2") as im:
         im.load()
         outfile = str(tmp_path / "temp_test-card.png")
         im.save(outfile)
-    assert_image_similar(im, test_card, 1.0e-3)
+    assert_image_similar(im, card, 1.0e-3)
 
 
-def test_lossy_tiled():
-    assert_image_similar_tofile(
-        test_card, "Tests/images/test-card-lossy-tiled.jp2", 2.0
-    )
+def test_lossy_tiled(card: ImageFile.ImageFile) -> None:
+    assert_image_similar_tofile(card, "Tests/images/test-card-lossy-tiled.jp2", 2.0)
 
 
-def test_lossless_rt():
-    im = roundtrip(test_card)
-    assert_image_equal(im, test_card)
+def test_lossless_rt(card: ImageFile.ImageFile) -> None:
+    im = roundtrip(card)
+    assert_image_equal(im, card)
 
 
-def test_lossy_rt():
-    im = roundtrip(test_card, quality_layers=[20])
-    assert_image_similar(im, test_card, 2.0)
+def test_lossy_rt(card: ImageFile.ImageFile) -> None:
+    im = roundtrip(card, quality_layers=[20])
+    assert_image_similar(im, card, 2.0)
 
 
-def test_tiled_rt():
-    im = roundtrip(test_card, tile_size=(128, 128))
-    assert_image_equal(im, test_card)
+def test_tiled_rt(card: ImageFile.ImageFile) -> None:
+    im = roundtrip(card, tile_size=(128, 128))
+    assert_image_equal(im, card)
 
 
-def test_tiled_offset_rt():
-    im = roundtrip(test_card, tile_size=(128, 128), tile_offset=(0, 0), offset=(32, 32))
-    assert_image_equal(im, test_card)
+def test_tiled_offset_rt(card: ImageFile.ImageFile) -> None:
+    im = roundtrip(card, tile_size=(128, 128), tile_offset=(0, 0), offset=(32, 32))
+    assert_image_equal(im, card)
 
 
-def test_tiled_offset_too_small():
+def test_tiled_offset_too_small(card: ImageFile.ImageFile) -> None:
     with pytest.raises(ValueError):
-        roundtrip(test_card, tile_size=(128, 128), tile_offset=(0, 0), offset=(128, 32))
+        roundtrip(card, tile_size=(128, 128), tile_offset=(0, 0), offset=(128, 32))
 
 
-def test_irreversible_rt():
-    im = roundtrip(test_card, irreversible=True, quality_layers=[20])
-    assert_image_similar(im, test_card, 2.0)
+def test_irreversible_rt(card: ImageFile.ImageFile) -> None:
+    im = roundtrip(card, irreversible=True, quality_layers=[20])
+    assert_image_similar(im, card, 2.0)
 
 
-def test_prog_qual_rt():
-    im = roundtrip(test_card, quality_layers=[60, 40, 20], progression="LRCP")
-    assert_image_similar(im, test_card, 2.0)
+def test_prog_qual_rt(card: ImageFile.ImageFile) -> None:
+    im = roundtrip(card, quality_layers=[60, 40, 20], progression="LRCP")
+    assert_image_similar(im, card, 2.0)
 
 
-def test_prog_res_rt():
-    im = roundtrip(test_card, num_resolutions=8, progression="RLCP")
-    assert_image_equal(im, test_card)
+def test_prog_res_rt(card: ImageFile.ImageFile) -> None:
+    im = roundtrip(card, num_resolutions=8, progression="RLCP")
+    assert_image_equal(im, card)
 
 
 @pytest.mark.parametrize("num_resolutions", range(2, 6))
-def test_default_num_resolutions(num_resolutions):
+def test_default_num_resolutions(
+    card: ImageFile.ImageFile, num_resolutions: int
+) -> None:
     d = 1 << (num_resolutions - 1)
-    im = test_card.resize((d - 1, d - 1))
+    im = card.resize((d - 1, d - 1))
     with pytest.raises(OSError):
         roundtrip(im, num_resolutions=num_resolutions)
     reloaded = roundtrip(im)
     assert_image_equal(im, reloaded)
 
 
-def test_reduce():
+def test_reduce() -> None:
     with Image.open("Tests/images/test-card-lossless.jp2") as im:
         assert callable(im.reduce)
 
@@ -158,7 +173,7 @@ def test_reduce():
         assert im.size == (40, 30)
 
 
-def test_load_dpi():
+def test_load_dpi() -> None:
     with Image.open("Tests/images/test-card-lossless.jp2") as im:
         assert im.info["dpi"] == (71.9836, 71.9836)
 
@@ -166,7 +181,7 @@ def test_load_dpi():
         assert "dpi" not in im.info
 
 
-def test_restricted_icc_profile():
+def test_restricted_icc_profile() -> None:
     ImageFile.LOAD_TRUNCATED_IMAGES = True
     try:
         # JPEG2000 image with a restricted ICC profile and a known colorspace
@@ -176,7 +191,16 @@ def test_restricted_icc_profile():
         ImageFile.LOAD_TRUNCATED_IMAGES = False
 
 
-def test_header_errors():
+@pytest.mark.skipif(
+    not os.path.exists(EXTRA_DIR), reason="Extra image files not installed"
+)
+def test_unknown_colorspace() -> None:
+    with Image.open(f"{EXTRA_DIR}/file8.jp2") as im:
+        im.load()
+        assert im.mode == "L"
+
+
+def test_header_errors() -> None:
     for path in (
         "Tests/images/invalid_header_length.jp2",
         "Tests/images/not_enough_data.jp2",
@@ -190,31 +214,31 @@ def test_header_errors():
             pass
 
 
-def test_layers_type(tmp_path):
+def test_layers_type(card: ImageFile.ImageFile, tmp_path: Path) -> None:
     outfile = str(tmp_path / "temp_layers.jp2")
     for quality_layers in [[100, 50, 10], (100, 50, 10), None]:
-        test_card.save(outfile, quality_layers=quality_layers)
+        card.save(outfile, quality_layers=quality_layers)
 
-    for quality_layers in ["quality_layers", ("100", "50", "10")]:
+    for quality_layers_str in ["quality_layers", ("100", "50", "10")]:
         with pytest.raises(ValueError):
-            test_card.save(outfile, quality_layers=quality_layers)
+            card.save(outfile, quality_layers=quality_layers_str)
 
 
-def test_layers():
+def test_layers(card: ImageFile.ImageFile) -> None:
     out = BytesIO()
-    test_card.save(out, "JPEG2000", quality_layers=[100, 50, 10], progression="LRCP")
+    card.save(out, "JPEG2000", quality_layers=[100, 50, 10], progression="LRCP")
     out.seek(0)
 
     with Image.open(out) as im:
         im.layers = 1
         im.load()
-        assert_image_similar(im, test_card, 13)
+        assert_image_similar(im, card, 13)
 
     out.seek(0)
     with Image.open(out) as im:
         im.layers = 3
         im.load()
-        assert_image_similar(im, test_card, 0.4)
+        assert_image_similar(im, card, 0.4)
 
 
 @pytest.mark.parametrize(
@@ -227,27 +251,33 @@ def test_layers():
         ("foo.jp2", {"no_jp2": True}, 0, b"\xff\x4f"),
         ("foo.j2k", {"no_jp2": False}, 0, b"\xff\x4f"),
         ("foo.jp2", {"no_jp2": False}, 4, b"jP"),
-        ("foo.jp2", {"no_jp2": False}, 4, b"jP"),
+        (None, {"no_jp2": False}, 4, b"jP"),
     ),
 )
-def test_no_jp2(name, args, offset, data):
+def test_no_jp2(
+    card: ImageFile.ImageFile,
+    name: str,
+    args: dict[str, bool],
+    offset: int,
+    data: bytes,
+) -> None:
     out = BytesIO()
     if name:
         out.name = name
-    test_card.save(out, "JPEG2000", **args)
+    card.save(out, "JPEG2000", **args)
     out.seek(offset)
     assert out.read(2) == data
 
 
-def test_mct():
+def test_mct(card: ImageFile.ImageFile) -> None:
     # Three component
     for val in (0, 1):
         out = BytesIO()
-        test_card.save(out, "JPEG2000", mct=val, no_jp2=True)
+        card.save(out, "JPEG2000", mct=val, no_jp2=True)
 
         assert out.getvalue()[59] == val
         with Image.open(out) as im:
-            assert_image_similar(im, test_card, 1.0e-3)
+            assert_image_similar(im, card, 1.0e-3)
 
     # Single component should have MCT disabled
     for val in (0, 1):
@@ -260,7 +290,7 @@ def test_mct():
             assert_image_similar(im, jp2, 1.0e-3)
 
 
-def test_sgnd(tmp_path):
+def test_sgnd(tmp_path: Path) -> None:
     outfile = str(tmp_path / "temp.jp2")
 
     im = Image.new("L", (1, 1))
@@ -274,61 +304,75 @@ def test_sgnd(tmp_path):
         assert reloaded_signed.getpixel((0, 0)) == 128
 
 
-def test_rgba():
+@pytest.mark.parametrize("ext", (".j2k", ".jp2"))
+def test_rgba(ext: str) -> None:
     # Arrange
-    with Image.open("Tests/images/rgb_trns_ycbc.j2k") as j2k:
-        with Image.open("Tests/images/rgb_trns_ycbc.jp2") as jp2:
-            # Act
-            j2k.load()
-            jp2.load()
+    with Image.open("Tests/images/rgb_trns_ycbc" + ext) as im:
+        # Act
+        im.load()
 
-            # Assert
-            assert j2k.mode == "RGBA"
-            assert jp2.mode == "RGBA"
+        # Assert
+        assert im.mode == "RGBA"
+
+
+@pytest.mark.skipif(
+    not os.path.exists(EXTRA_DIR), reason="Extra image files not installed"
+)
+@skip_unless_feature_version("jpg_2000", "2.5.1")
+def test_cmyk() -> None:
+    with Image.open(f"{EXTRA_DIR}/issue205.jp2") as im:
+        assert im.mode == "CMYK"
+        assert im.getpixel((0, 0)) == (185, 134, 0, 0)
 
 
 @pytest.mark.parametrize("ext", (".j2k", ".jp2"))
-def test_16bit_monochrome_has_correct_mode(ext):
+def test_16bit_monochrome_has_correct_mode(ext: str) -> None:
     with Image.open("Tests/images/16bit.cropped" + ext) as im:
         im.load()
         assert im.mode == "I;16"
 
 
-def test_16bit_monochrome_jp2_like_tiff():
+def test_16bit_monochrome_jp2_like_tiff() -> None:
     with Image.open("Tests/images/16bit.cropped.tif") as tiff_16bit:
         assert_image_similar_tofile(tiff_16bit, "Tests/images/16bit.cropped.jp2", 1e-3)
 
 
-def test_16bit_monochrome_j2k_like_tiff():
+def test_16bit_monochrome_j2k_like_tiff() -> None:
     with Image.open("Tests/images/16bit.cropped.tif") as tiff_16bit:
         assert_image_similar_tofile(tiff_16bit, "Tests/images/16bit.cropped.j2k", 1e-3)
 
 
-def test_16bit_j2k_roundtrips():
+def test_16bit_j2k_roundtrips() -> None:
     with Image.open("Tests/images/16bit.cropped.j2k") as j2k:
         im = roundtrip(j2k)
         assert_image_equal(im, j2k)
 
 
-def test_16bit_jp2_roundtrips():
+def test_16bit_jp2_roundtrips() -> None:
     with Image.open("Tests/images/16bit.cropped.jp2") as jp2:
         im = roundtrip(jp2)
         assert_image_equal(im, jp2)
 
 
-def test_issue_6194():
+def test_issue_6194() -> None:
     with Image.open("Tests/images/issue_6194.j2k") as im:
         assert im.getpixel((5, 5)) == 31
 
 
-def test_unbound_local():
+def test_unknown_j2k_mode() -> None:
+    with pytest.raises(UnidentifiedImageError):
+        with Image.open("Tests/images/unknown_mode.j2k"):
+            pass
+
+
+def test_unbound_local() -> None:
     # prepatch, a malformed jp2 file could cause an UnboundLocalError exception.
-    with pytest.raises(OSError):
+    with pytest.raises(UnidentifiedImageError):
         with Image.open("Tests/images/unbound_variable.jp2"):
             pass
 
 
-def test_parser_feed():
+def test_parser_feed() -> None:
     # Arrange
     with open("Tests/images/test-card-lossless.jp2", "rb") as f:
         data = f.read()
@@ -338,6 +382,7 @@ def test_parser_feed():
     p.feed(data)
 
     # Assert
+    assert p.image is not None
     assert p.image.size == (640, 480)
 
 
@@ -345,12 +390,12 @@ def test_parser_feed():
     not os.path.exists(EXTRA_DIR), reason="Extra image files not installed"
 )
 @pytest.mark.parametrize("name", ("subsampling_1", "subsampling_2", "zoo1", "zoo2"))
-def test_subsampling_decode(name):
+def test_subsampling_decode(name: str) -> None:
     test = f"{EXTRA_DIR}/{name}.jp2"
     reference = f"{EXTRA_DIR}/{name}.ppm"
 
     with Image.open(test) as im:
-        epsilon = 3  # for YCbCr images
+        epsilon = 3.0  # for YCbCr images
         with Image.open(reference) as im2:
             width, height = im2.size
             if name[-1] == "2":
@@ -361,7 +406,24 @@ def test_subsampling_decode(name):
         assert_image_similar(im, expected, epsilon)
 
 
-def test_comment():
+@pytest.mark.skipif(
+    not os.path.exists(EXTRA_DIR), reason="Extra image files not installed"
+)
+def test_pclr() -> None:
+    with Image.open(f"{EXTRA_DIR}/issue104_jpxstream.jp2") as im:
+        assert im.mode == "P"
+        assert len(im.palette.colors) == 256
+        assert im.palette.colors[(255, 255, 255)] == 0
+
+    with Image.open(
+        f"{EXTRA_DIR}/147af3f1083de4393666b7d99b01b58b_signal_sigsegv_130c531_6155_5136.jp2"
+    ) as im:
+        assert im.mode == "P"
+        assert len(im.palette.colors) == 139
+        assert im.palette.colors[(0, 0, 0, 0)] == 0
+
+
+def test_comment() -> None:
     with Image.open("Tests/images/comment.jp2") as im:
         assert im.info["comment"] == b"Created by OpenJPEG version 2.5.0"
 
@@ -372,22 +434,22 @@ def test_comment():
             pass
 
 
-def test_save_comment():
+def test_save_comment(card: ImageFile.ImageFile) -> None:
     for comment in ("Created by Pillow", b"Created by Pillow"):
         out = BytesIO()
-        test_card.save(out, "JPEG2000", comment=comment)
+        card.save(out, "JPEG2000", comment=comment)
 
         with Image.open(out) as im:
             assert im.info["comment"] == b"Created by Pillow"
 
     out = BytesIO()
     long_comment = b" " * 65531
-    test_card.save(out, "JPEG2000", comment=long_comment)
+    card.save(out, "JPEG2000", comment=long_comment)
     with Image.open(out) as im:
         assert im.info["comment"] == long_comment
 
     with pytest.raises(ValueError):
-        test_card.save(out, "JPEG2000", comment=long_comment + b" ")
+        card.save(out, "JPEG2000", comment=long_comment + b" ")
 
 
 @pytest.mark.parametrize(
@@ -399,7 +461,7 @@ def test_save_comment():
         "Tests/images/crash-d2c93af851d3ab9a19e34503626368b2ecde9c03.j2k",
     ],
 )
-def test_crashes(test_file):
+def test_crashes(test_file: str) -> None:
     with open(test_file, "rb") as f:
         with Image.open(f) as im:
             # Valgrind should not complain here
@@ -410,15 +472,15 @@ def test_crashes(test_file):
 
 
 @skip_unless_feature_version("jpg_2000", "2.4.0")
-def test_plt_marker():
+def test_plt_marker(card: ImageFile.ImageFile) -> None:
     # Search the start of the codesteam for PLT
     out = BytesIO()
-    test_card.save(out, "JPEG2000", no_jp2=True, plt=True)
+    card.save(out, "JPEG2000", no_jp2=True, plt=True)
     out.seek(0)
     while True:
         marker = out.read(2)
         if not marker:
-            assert False, "End of stream without PLT"
+            pytest.fail("End of stream without PLT")
 
         jp2_boxid = _binary.i16be(marker)
         if jp2_boxid == 0xFF4F:
@@ -428,8 +490,14 @@ def test_plt_marker():
             # PLT
             return
         elif jp2_boxid == 0xFF93:
-            assert False, "SOD without finding PLT first"
+            pytest.fail("SOD without finding PLT first")
 
         hdr = out.read(2)
         length = _binary.i16be(hdr)
         out.seek(length - 2, os.SEEK_CUR)
+
+
+def test_9bit() -> None:
+    with Image.open("Tests/images/9bit.j2k") as im:
+        assert im.mode == "I;16"
+        assert im.size == (128, 128)
diff --git a/Tests/test_file_libtiff.py b/Tests/test_file_libtiff.py
index ac78b0869..9c49b1534 100644
--- a/Tests/test_file_libtiff.py
+++ b/Tests/test_file_libtiff.py
@@ -1,15 +1,18 @@
+from __future__ import annotations
+
 import base64
 import io
 import itertools
 import os
 import re
 import sys
-from collections import namedtuple
+from pathlib import Path
+from typing import Any, NamedTuple
 
 import pytest
 
-from PIL import Image, ImageFilter, TiffImagePlugin, TiffTags, features
-from PIL.TiffImagePlugin import SAMPLEFORMAT, STRIPOFFSETS, SUBIFD
+from PIL import Image, ImageFilter, ImageOps, TiffImagePlugin, TiffTags, features
+from PIL.TiffImagePlugin import OSUBFILETYPE, SAMPLEFORMAT, STRIPOFFSETS, SUBIFD
 
 from .helper import (
     assert_image_equal,
@@ -24,7 +27,7 @@ from .helper import (
 
 @skip_unless_feature("libtiff")
 class LibTiffTestCase:
-    def _assert_noerr(self, tmp_path, im):
+    def _assert_noerr(self, tmp_path: Path, im: TiffImagePlugin.TiffImageFile) -> None:
         """Helper tests that assert basic sanity about the g4 tiff reading"""
         # 1 bit
         assert im.mode == "1"
@@ -48,10 +51,12 @@ class LibTiffTestCase:
 
 
 class TestFileLibTiff(LibTiffTestCase):
-    def test_version(self):
-        assert re.search(r"\d+\.\d+\.\d+$", features.version_codec("libtiff"))
+    def test_version(self) -> None:
+        version = features.version_codec("libtiff")
+        assert version is not None
+        assert re.search(r"\d+\.\d+\.\d+t?$", version)
 
-    def test_g4_tiff(self, tmp_path):
+    def test_g4_tiff(self, tmp_path: Path) -> None:
         """Test the ordinary file path load path"""
 
         test_file = "Tests/images/hopper_g4_500.tif"
@@ -59,12 +64,12 @@ class TestFileLibTiff(LibTiffTestCase):
             assert im.size == (500, 500)
             self._assert_noerr(tmp_path, im)
 
-    def test_g4_large(self, tmp_path):
+    def test_g4_large(self, tmp_path: Path) -> None:
         test_file = "Tests/images/pport_g4.tif"
         with Image.open(test_file) as im:
             self._assert_noerr(tmp_path, im)
 
-    def test_g4_tiff_file(self, tmp_path):
+    def test_g4_tiff_file(self, tmp_path: Path) -> None:
         """Testing the string load path"""
 
         test_file = "Tests/images/hopper_g4_500.tif"
@@ -73,7 +78,7 @@ class TestFileLibTiff(LibTiffTestCase):
                 assert im.size == (500, 500)
                 self._assert_noerr(tmp_path, im)
 
-    def test_g4_tiff_bytesio(self, tmp_path):
+    def test_g4_tiff_bytesio(self, tmp_path: Path) -> None:
         """Testing the stringio loading code path"""
         test_file = "Tests/images/hopper_g4_500.tif"
         s = io.BytesIO()
@@ -84,30 +89,41 @@ class TestFileLibTiff(LibTiffTestCase):
             assert im.size == (500, 500)
             self._assert_noerr(tmp_path, im)
 
-    def test_g4_non_disk_file_object(self, tmp_path):
+    def test_g4_non_disk_file_object(self, tmp_path: Path) -> None:
         """Testing loading from non-disk non-BytesIO file object"""
         test_file = "Tests/images/hopper_g4_500.tif"
-        s = io.BytesIO()
         with open(test_file, "rb") as f:
-            s.write(f.read())
-            s.seek(0)
-        r = io.BufferedReader(s)
+            data = f.read()
+
+        class NonBytesIO(io.RawIOBase):
+            def read(self, size: int = -1) -> bytes:
+                nonlocal data
+                if size == -1:
+                    size = len(data)
+                result = data[:size]
+                data = data[size:]
+                return result
+
+            def readable(self) -> bool:
+                return True
+
+        r = io.BufferedReader(NonBytesIO())
         with Image.open(r) as im:
             assert im.size == (500, 500)
             self._assert_noerr(tmp_path, im)
 
-    def test_g4_eq_png(self):
+    def test_g4_eq_png(self) -> None:
         """Checking that we're actually getting the data that we expect"""
         with Image.open("Tests/images/hopper_bw_500.png") as png:
             assert_image_equal_tofile(png, "Tests/images/hopper_g4_500.tif")
 
     # see https://github.com/python-pillow/Pillow/issues/279
-    def test_g4_fillorder_eq_png(self):
+    def test_g4_fillorder_eq_png(self) -> None:
         """Checking that we're actually getting the data that we expect"""
         with Image.open("Tests/images/g4-fillorder-test.tif") as g4:
             assert_image_equal_tofile(g4, "Tests/images/g4-fillorder-test.png")
 
-    def test_g4_write(self, tmp_path):
+    def test_g4_write(self, tmp_path: Path) -> None:
         """Checking to see that the saved image is the same as what we wrote"""
         test_file = "Tests/images/hopper_g4_500.tif"
         with Image.open(test_file) as orig:
@@ -126,7 +142,7 @@ class TestFileLibTiff(LibTiffTestCase):
 
                 assert orig.tobytes() != reread.tobytes()
 
-    def test_adobe_deflate_tiff(self):
+    def test_adobe_deflate_tiff(self) -> None:
         test_file = "Tests/images/tiff_adobe_deflate.tif"
         with Image.open(test_file) as im:
             assert im.mode == "RGB"
@@ -137,7 +153,7 @@ class TestFileLibTiff(LibTiffTestCase):
             assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")
 
     @pytest.mark.parametrize("legacy_api", (False, True))
-    def test_write_metadata(self, legacy_api, tmp_path):
+    def test_write_metadata(self, legacy_api: bool, tmp_path: Path) -> None:
         """Test metadata writing through libtiff"""
         f = str(tmp_path / "temp.tiff")
         with Image.open("Tests/images/hopper_g4.tif") as img:
@@ -182,7 +198,9 @@ class TestFileLibTiff(LibTiffTestCase):
             assert field in reloaded, f"{field} not in metadata"
 
     @pytest.mark.valgrind_known_error(reason="Known invalid metadata")
-    def test_additional_metadata(self, tmp_path):
+    def test_additional_metadata(
+        self, monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+    ) -> None:
         # these should not crash. Seriously dummy data, most of it doesn't make
         # any sense, so we're running up against limits where we're asking
         # libtiff to do stupid things.
@@ -222,9 +240,10 @@ class TestFileLibTiff(LibTiffTestCase):
 
             new_ifd = TiffImagePlugin.ImageFileDirectory_v2()
             for tag, info in core_items.items():
+                assert info.type is not None
                 if info.length == 1:
                     new_ifd[tag] = values[info.type]
-                if info.length == 0:
+                elif not info.length:
                     new_ifd[tag] = tuple(values[info.type] for _ in range(3))
                 else:
                     new_ifd[tag] = tuple(values[info.type] for _ in range(info.length))
@@ -233,94 +252,111 @@ class TestFileLibTiff(LibTiffTestCase):
             del new_ifd[338]
 
             out = str(tmp_path / "temp.tif")
-            TiffImagePlugin.WRITE_LIBTIFF = True
+            monkeypatch.setattr(TiffImagePlugin, "WRITE_LIBTIFF", True)
 
             im.save(out, tiffinfo=new_ifd)
 
-        TiffImagePlugin.WRITE_LIBTIFF = False
+    @pytest.mark.parametrize(
+        "libtiff",
+        (
+            pytest.param(
+                True,
+                marks=pytest.mark.skipif(
+                    not getattr(Image.core, "libtiff_support_custom_tags", False),
+                    reason="Custom tags not supported by older libtiff",
+                ),
+            ),
+            False,
+        ),
+    )
+    def test_custom_metadata(
+        self, monkeypatch: pytest.MonkeyPatch, tmp_path: Path, libtiff: bool
+    ) -> None:
+        monkeypatch.setattr(TiffImagePlugin, "WRITE_LIBTIFF", libtiff)
+
+        class Tc(NamedTuple):
+            value: Any
+            type: int
+            supported_by_default: bool
 
-    def test_custom_metadata(self, tmp_path):
-        tc = namedtuple("test_case", "value,type,supported_by_default")
         custom = {
             37000 + k: v
             for k, v in enumerate(
                 [
-                    tc(4, TiffTags.SHORT, True),
-                    tc(123456789, TiffTags.LONG, True),
-                    tc(-4, TiffTags.SIGNED_BYTE, False),
-                    tc(-4, TiffTags.SIGNED_SHORT, False),
-                    tc(-123456789, TiffTags.SIGNED_LONG, False),
-                    tc(TiffImagePlugin.IFDRational(4, 7), TiffTags.RATIONAL, True),
-                    tc(4.25, TiffTags.FLOAT, True),
-                    tc(4.25, TiffTags.DOUBLE, True),
-                    tc("custom tag value", TiffTags.ASCII, True),
-                    tc(b"custom tag value", TiffTags.BYTE, True),
-                    tc((4, 5, 6), TiffTags.SHORT, True),
-                    tc((123456789, 9, 34, 234, 219387, 92432323), TiffTags.LONG, True),
-                    tc((-4, 9, 10), TiffTags.SIGNED_BYTE, False),
-                    tc((-4, 5, 6), TiffTags.SIGNED_SHORT, False),
-                    tc(
+                    Tc(4, TiffTags.SHORT, True),
+                    Tc(123456789, TiffTags.LONG, True),
+                    Tc(-4, TiffTags.SIGNED_BYTE, False),
+                    Tc(-4, TiffTags.SIGNED_SHORT, False),
+                    Tc(-123456789, TiffTags.SIGNED_LONG, False),
+                    Tc(TiffImagePlugin.IFDRational(4, 7), TiffTags.RATIONAL, True),
+                    Tc(4.25, TiffTags.FLOAT, True),
+                    Tc(4.25, TiffTags.DOUBLE, True),
+                    Tc("custom tag value", TiffTags.ASCII, True),
+                    Tc(b"custom tag value", TiffTags.BYTE, True),
+                    Tc((4, 5, 6), TiffTags.SHORT, True),
+                    Tc((123456789, 9, 34, 234, 219387, 92432323), TiffTags.LONG, True),
+                    Tc((-4, 9, 10), TiffTags.SIGNED_BYTE, False),
+                    Tc((-4, 5, 6), TiffTags.SIGNED_SHORT, False),
+                    Tc(
                         (-123456789, 9, 34, 234, 219387, -92432323),
                         TiffTags.SIGNED_LONG,
                         False,
                     ),
-                    tc((4.25, 5.25), TiffTags.FLOAT, True),
-                    tc((4.25, 5.25), TiffTags.DOUBLE, True),
+                    Tc((4.25, 5.25), TiffTags.FLOAT, True),
+                    Tc((4.25, 5.25), TiffTags.DOUBLE, True),
                     # array of TIFF_BYTE requires bytes instead of tuple for backwards
                     # compatibility
-                    tc(bytes([4]), TiffTags.BYTE, True),
-                    tc(bytes((4, 9, 10)), TiffTags.BYTE, True),
+                    Tc(bytes([4]), TiffTags.BYTE, True),
+                    Tc(bytes((4, 9, 10)), TiffTags.BYTE, True),
                 ]
             )
         }
 
-        libtiffs = [False]
-        if Image.core.libtiff_support_custom_tags:
-            libtiffs.append(True)
+        def check_tags(
+            tiffinfo: TiffImagePlugin.ImageFileDirectory_v2 | dict[int, str]
+        ) -> None:
+            im = hopper()
 
-        for libtiff in libtiffs:
-            TiffImagePlugin.WRITE_LIBTIFF = libtiff
+            out = str(tmp_path / "temp.tif")
+            im.save(out, tiffinfo=tiffinfo)
 
-            def check_tags(tiffinfo):
-                im = hopper()
+            with Image.open(out) as reloaded:
+                for tag, value in tiffinfo.items():
+                    reloaded_value = reloaded.tag_v2[tag]
+                    if (
+                        isinstance(reloaded_value, TiffImagePlugin.IFDRational)
+                        and libtiff
+                    ):
+                        # libtiff does not support real RATIONALS
+                        assert round(abs(float(reloaded_value) - float(value)), 7) == 0
+                        continue
 
-                out = str(tmp_path / "temp.tif")
-                im.save(out, tiffinfo=tiffinfo)
+                    assert reloaded_value == value
 
-                with Image.open(out) as reloaded:
-                    for tag, value in tiffinfo.items():
-                        reloaded_value = reloaded.tag_v2[tag]
-                        if (
-                            isinstance(reloaded_value, TiffImagePlugin.IFDRational)
-                            and libtiff
-                        ):
-                            # libtiff does not support real RATIONALS
-                            assert (
-                                round(abs(float(reloaded_value) - float(value)), 7) == 0
-                            )
-                            continue
+        # Test with types
+        ifd = TiffImagePlugin.ImageFileDirectory_v2()
+        for tag, tagdata in custom.items():
+            ifd[tag] = tagdata.value
+            ifd.tagtype[tag] = tagdata.type
+        check_tags(ifd)
 
-                        assert reloaded_value == value
+        # Test without types. This only works for some types, int for example are
+        # always encoded as LONG and not SIGNED_LONG.
+        check_tags(
+            {
+                tag: tagdata.value
+                for tag, tagdata in custom.items()
+                if tagdata.supported_by_default
+            }
+        )
 
-            # Test with types
-            ifd = TiffImagePlugin.ImageFileDirectory_v2()
-            for tag, tagdata in custom.items():
-                ifd[tag] = tagdata.value
-                ifd.tagtype[tag] = tagdata.type
-            check_tags(ifd)
+    def test_osubfiletype(self, tmp_path: Path) -> None:
+        outfile = str(tmp_path / "temp.tif")
+        with Image.open("Tests/images/g4_orientation_6.tif") as im:
+            im.tag_v2[OSUBFILETYPE] = 1
+            im.save(outfile)
 
-            # Test without types. This only works for some types, int for example are
-            # always encoded as LONG and not SIGNED_LONG.
-            check_tags(
-                {
-                    tag: tagdata.value
-                    for tag, tagdata in custom.items()
-                    if tagdata.supported_by_default
-                }
-            )
-        TiffImagePlugin.WRITE_LIBTIFF = False
-
-    def test_subifd(self, tmp_path):
+    def test_subifd(self, tmp_path: Path) -> None:
         outfile = str(tmp_path / "temp.tif")
         with Image.open("Tests/images/g4_orientation_6.tif") as im:
             im.tag_v2[SUBIFD] = 10000
@@ -328,28 +364,28 @@ class TestFileLibTiff(LibTiffTestCase):
             # Should not segfault
             im.save(outfile)
 
-    def test_xmlpacket_tag(self, tmp_path):
-        TiffImagePlugin.WRITE_LIBTIFF = True
+    def test_xmlpacket_tag(
+        self, monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+    ) -> None:
+        monkeypatch.setattr(TiffImagePlugin, "WRITE_LIBTIFF", True)
 
         out = str(tmp_path / "temp.tif")
         hopper().save(out, tiffinfo={700: b"xmlpacket tag"})
-        TiffImagePlugin.WRITE_LIBTIFF = False
 
         with Image.open(out) as reloaded:
             if 700 in reloaded.tag_v2:
                 assert reloaded.tag_v2[700] == b"xmlpacket tag"
 
-    def test_int_dpi(self, tmp_path):
+    def test_int_dpi(self, monkeypatch: pytest.MonkeyPatch, tmp_path: Path) -> None:
         # issue #1765
         im = hopper("RGB")
         out = str(tmp_path / "temp.tif")
-        TiffImagePlugin.WRITE_LIBTIFF = True
+        monkeypatch.setattr(TiffImagePlugin, "WRITE_LIBTIFF", True)
         im.save(out, dpi=(72, 72))
-        TiffImagePlugin.WRITE_LIBTIFF = False
         with Image.open(out) as reloaded:
             assert reloaded.info["dpi"] == (72.0, 72.0)
 
-    def test_g3_compression(self, tmp_path):
+    def test_g3_compression(self, tmp_path: Path) -> None:
         with Image.open("Tests/images/hopper_g4_500.tif") as i:
             out = str(tmp_path / "temp.tif")
             i.save(out, compression="group3")
@@ -358,7 +394,7 @@ class TestFileLibTiff(LibTiffTestCase):
                 assert reread.info["compression"] == "group3"
                 assert_image_equal(reread, i)
 
-    def test_little_endian(self, tmp_path):
+    def test_little_endian(self, tmp_path: Path) -> None:
         with Image.open("Tests/images/16bit.deflate.tif") as im:
             assert im.getpixel((0, 0)) == 480
             assert im.mode == "I;16"
@@ -377,7 +413,7 @@ class TestFileLibTiff(LibTiffTestCase):
         # UNDONE - libtiff defaults to writing in native endian, so
         # on big endian, we'll get back mode = 'I;16B' here.
 
-    def test_big_endian(self, tmp_path):
+    def test_big_endian(self, tmp_path: Path) -> None:
         with Image.open("Tests/images/16bit.MM.deflate.tif") as im:
             assert im.getpixel((0, 0)) == 480
             assert im.mode == "I;16B"
@@ -394,7 +430,7 @@ class TestFileLibTiff(LibTiffTestCase):
                 assert reread.info["compression"] == im.info["compression"]
                 assert reread.getpixel((0, 0)) == 480
 
-    def test_g4_string_info(self, tmp_path):
+    def test_g4_string_info(self, tmp_path: Path) -> None:
         """Tests String data in info directory"""
         test_file = "Tests/images/hopper_g4_500.tif"
         with Image.open(test_file) as orig:
@@ -407,13 +443,13 @@ class TestFileLibTiff(LibTiffTestCase):
             assert "temp.tif" == reread.tag_v2[269]
             assert "temp.tif" == reread.tag[269][0]
 
-    def test_12bit_rawmode(self):
+    def test_12bit_rawmode(self, monkeypatch: pytest.MonkeyPatch) -> None:
         """Are we generating the same interpretation
         of the image as Imagemagick is?"""
-        TiffImagePlugin.READ_LIBTIFF = True
+        monkeypatch.setattr(TiffImagePlugin, "READ_LIBTIFF", True)
         with Image.open("Tests/images/12bit.cropped.tif") as im:
             im.load()
-            TiffImagePlugin.READ_LIBTIFF = False
+            monkeypatch.setattr(TiffImagePlugin, "READ_LIBTIFF", False)
             # to make the target --
             # convert 12bit.cropped.tif -depth 16 tmp.tif
             # convert tmp.tif -evaluate RightShift 4 12in16bit2.tif
@@ -422,7 +458,7 @@ class TestFileLibTiff(LibTiffTestCase):
 
             assert_image_equal_tofile(im, "Tests/images/12in16bit.tif")
 
-    def test_blur(self, tmp_path):
+    def test_blur(self, tmp_path: Path) -> None:
         # test case from irc, how to do blur on b/w image
         # and save to compressed tif.
         out = str(tmp_path / "temp.tif")
@@ -434,7 +470,7 @@ class TestFileLibTiff(LibTiffTestCase):
 
         assert_image_equal_tofile(im, out)
 
-    def test_compressions(self, tmp_path):
+    def test_compressions(self, tmp_path: Path) -> None:
         # Test various tiff compressions and assert similar image content but reduced
         # file sizes.
         im = hopper("RGB")
@@ -460,7 +496,7 @@ class TestFileLibTiff(LibTiffTestCase):
         assert size_compressed > size_jpeg
         assert size_jpeg > size_jpeg_30
 
-    def test_tiff_jpeg_compression(self, tmp_path):
+    def test_tiff_jpeg_compression(self, tmp_path: Path) -> None:
         im = hopper("RGB")
         out = str(tmp_path / "temp.tif")
         im.save(out, compression="tiff_jpeg")
@@ -468,7 +504,7 @@ class TestFileLibTiff(LibTiffTestCase):
         with Image.open(out) as reloaded:
             assert reloaded.info["compression"] == "jpeg"
 
-    def test_tiff_deflate_compression(self, tmp_path):
+    def test_tiff_deflate_compression(self, tmp_path: Path) -> None:
         im = hopper("RGB")
         out = str(tmp_path / "temp.tif")
         im.save(out, compression="tiff_deflate")
@@ -476,7 +512,7 @@ class TestFileLibTiff(LibTiffTestCase):
         with Image.open(out) as reloaded:
             assert reloaded.info["compression"] == "tiff_adobe_deflate"
 
-    def test_quality(self, tmp_path):
+    def test_quality(self, tmp_path: Path) -> None:
         im = hopper("RGB")
         out = str(tmp_path / "temp.tif")
 
@@ -491,7 +527,7 @@ class TestFileLibTiff(LibTiffTestCase):
         im.save(out, compression="jpeg", quality=0)
         im.save(out, compression="jpeg", quality=100)
 
-    def test_cmyk_save(self, tmp_path):
+    def test_cmyk_save(self, tmp_path: Path) -> None:
         im = hopper("CMYK")
         out = str(tmp_path / "temp.tif")
 
@@ -499,27 +535,29 @@ class TestFileLibTiff(LibTiffTestCase):
         assert_image_equal_tofile(im, out)
 
     @pytest.mark.parametrize("im", (hopper("P"), Image.new("P", (1, 1), "#000")))
-    def test_palette_save(self, im, tmp_path):
+    def test_palette_save(
+        self, im: Image.Image, monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+    ) -> None:
         out = str(tmp_path / "temp.tif")
 
-        TiffImagePlugin.WRITE_LIBTIFF = True
+        monkeypatch.setattr(TiffImagePlugin, "WRITE_LIBTIFF", True)
         im.save(out)
-        TiffImagePlugin.WRITE_LIBTIFF = False
 
         with Image.open(out) as reloaded:
             # colormap/palette tag
             assert len(reloaded.tag_v2[320]) == 768
 
     @pytest.mark.parametrize("compression", ("tiff_ccitt", "group3", "group4"))
-    def test_bw_compression_w_rgb(self, compression, tmp_path):
+    def test_bw_compression_w_rgb(self, compression: str, tmp_path: Path) -> None:
         im = hopper("RGB")
         out = str(tmp_path / "temp.tif")
 
         with pytest.raises(OSError):
             im.save(out, compression=compression)
 
-    def test_fp_leak(self):
-        im = Image.open("Tests/images/hopper_g4_500.tif")
+    def test_fp_leak(self) -> None:
+        im: Image.Image | None = Image.open("Tests/images/hopper_g4_500.tif")
+        assert im is not None
         fn = im.fp.fileno()
 
         os.fstat(fn)
@@ -532,9 +570,9 @@ class TestFileLibTiff(LibTiffTestCase):
         with pytest.raises(OSError):
             os.close(fn)
 
-    def test_multipage(self):
+    def test_multipage(self, monkeypatch: pytest.MonkeyPatch) -> None:
         # issue #862
-        TiffImagePlugin.READ_LIBTIFF = True
+        monkeypatch.setattr(TiffImagePlugin, "READ_LIBTIFF", True)
         with Image.open("Tests/images/multipage.tiff") as im:
             # file is a multipage tiff,  10x10 green, 10x10 red, 20x20 blue
 
@@ -553,11 +591,9 @@ class TestFileLibTiff(LibTiffTestCase):
             assert im.size == (20, 20)
             assert im.convert("RGB").getpixel((0, 0)) == (0, 0, 255)
 
-        TiffImagePlugin.READ_LIBTIFF = False
-
-    def test_multipage_nframes(self):
+    def test_multipage_nframes(self, monkeypatch: pytest.MonkeyPatch) -> None:
         # issue #862
-        TiffImagePlugin.READ_LIBTIFF = True
+        monkeypatch.setattr(TiffImagePlugin, "READ_LIBTIFF", True)
         with Image.open("Tests/images/multipage.tiff") as im:
             frames = im.n_frames
             assert frames == 3
@@ -566,10 +602,8 @@ class TestFileLibTiff(LibTiffTestCase):
                 # Should not raise ValueError: I/O operation on closed file
                 im.load()
 
-        TiffImagePlugin.READ_LIBTIFF = False
-
-    def test_multipage_seek_backwards(self):
-        TiffImagePlugin.READ_LIBTIFF = True
+    def test_multipage_seek_backwards(self, monkeypatch: pytest.MonkeyPatch) -> None:
+        monkeypatch.setattr(TiffImagePlugin, "READ_LIBTIFF", True)
         with Image.open("Tests/images/multipage.tiff") as im:
             im.seek(1)
             im.load()
@@ -577,31 +611,28 @@ class TestFileLibTiff(LibTiffTestCase):
             im.seek(0)
             assert im.convert("RGB").getpixel((0, 0)) == (0, 128, 0)
 
-        TiffImagePlugin.READ_LIBTIFF = False
-
-    def test__next(self):
-        TiffImagePlugin.READ_LIBTIFF = True
+    def test__next(self, monkeypatch: pytest.MonkeyPatch) -> None:
+        monkeypatch.setattr(TiffImagePlugin, "READ_LIBTIFF", True)
         with Image.open("Tests/images/hopper.tif") as im:
             assert not im.tag.next
             im.load()
             assert not im.tag.next
 
-    def test_4bit(self):
+    def test_4bit(self, monkeypatch: pytest.MonkeyPatch) -> None:
         # Arrange
         test_file = "Tests/images/hopper_gray_4bpp.tif"
         original = hopper("L")
 
         # Act
-        TiffImagePlugin.READ_LIBTIFF = True
+        monkeypatch.setattr(TiffImagePlugin, "READ_LIBTIFF", True)
         with Image.open(test_file) as im:
-            TiffImagePlugin.READ_LIBTIFF = False
 
             # Assert
             assert im.size == (128, 128)
             assert im.mode == "L"
             assert_image_similar(im, original, 7.3)
 
-    def test_gray_semibyte_per_pixel(self):
+    def test_gray_semibyte_per_pixel(self) -> None:
         test_files = (
             (
                 24.8,  # epsilon
@@ -634,32 +665,30 @@ class TestFileLibTiff(LibTiffTestCase):
                     assert im2.mode == "L"
                     assert_image_equal(im, im2)
 
-    def test_save_bytesio(self):
+    def test_save_bytesio(self, monkeypatch: pytest.MonkeyPatch) -> None:
         # PR 1011
         # Test TIFF saving to io.BytesIO() object.
 
-        TiffImagePlugin.WRITE_LIBTIFF = True
-        TiffImagePlugin.READ_LIBTIFF = True
+        monkeypatch.setattr(TiffImagePlugin, "WRITE_LIBTIFF", True)
+        monkeypatch.setattr(TiffImagePlugin, "READ_LIBTIFF", True)
 
         # Generate test image
         pilim = hopper()
 
-        def save_bytesio(compression=None):
+        def save_bytesio(compression: str | None = None) -> None:
             buffer_io = io.BytesIO()
             pilim.save(buffer_io, format="tiff", compression=compression)
             buffer_io.seek(0)
 
-            assert_image_similar_tofile(pilim, buffer_io, 0)
+            with Image.open(buffer_io) as saved_im:
+                assert_image_similar(pilim, saved_im, 0)
 
         save_bytesio()
         save_bytesio("raw")
         save_bytesio("packbits")
         save_bytesio("tiff_lzw")
 
-        TiffImagePlugin.WRITE_LIBTIFF = False
-        TiffImagePlugin.READ_LIBTIFF = False
-
-    def test_save_ycbcr(self, tmp_path):
+    def test_save_ycbcr(self, tmp_path: Path) -> None:
         im = hopper("YCbCr")
         outfile = str(tmp_path / "temp.tif")
         im.save(outfile, compression="jpeg")
@@ -668,27 +697,33 @@ class TestFileLibTiff(LibTiffTestCase):
             assert reloaded.tag_v2[530] == (1, 1)
             assert reloaded.tag_v2[532] == (0, 255, 128, 255, 128, 255)
 
-    def test_exif_ifd(self, tmp_path):
-        outfile = str(tmp_path / "temp.tif")
+    def test_exif_ifd(self) -> None:
+        out = io.BytesIO()
         with Image.open("Tests/images/tiff_adobe_deflate.tif") as im:
             assert im.tag_v2[34665] == 125456
-            im.save(outfile)
+            im.save(out, "TIFF")
 
-        with Image.open(outfile) as reloaded:
+            with Image.open(out) as reloaded:
+                assert 34665 not in reloaded.tag_v2
+
+            im.save(out, "TIFF", tiffinfo={34665: 125456})
+
+        with Image.open(out) as reloaded:
             if Image.core.libtiff_support_custom_tags:
                 assert reloaded.tag_v2[34665] == 125456
 
-    def test_crashing_metadata(self, tmp_path):
+    def test_crashing_metadata(
+        self, monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+    ) -> None:
         # issue 1597
         with Image.open("Tests/images/rdf.tif") as im:
             out = str(tmp_path / "temp.tif")
 
-            TiffImagePlugin.WRITE_LIBTIFF = True
+            monkeypatch.setattr(TiffImagePlugin, "WRITE_LIBTIFF", True)
             # this shouldn't crash
             im.save(out, format="TIFF")
-        TiffImagePlugin.WRITE_LIBTIFF = False
 
-    def test_page_number_x_0(self, tmp_path):
+    def test_page_number_x_0(self, tmp_path: Path) -> None:
         # Issue 973
         # Test TIFF with tag 297 (Page Number) having value of 0 0.
         # The first number is the current page number.
@@ -702,7 +737,7 @@ class TestFileLibTiff(LibTiffTestCase):
             # Should not divide by zero
             im.save(outfile)
 
-    def test_fd_duplication(self, tmp_path):
+    def test_fd_duplication(self, tmp_path: Path) -> None:
         # https://github.com/python-pillow/Pillow/issues/1651
 
         tmpfile = str(tmp_path / "temp.tif")
@@ -711,43 +746,49 @@ class TestFileLibTiff(LibTiffTestCase):
                 f.write(src.read())
 
         im = Image.open(tmpfile)
+        assert isinstance(im, TiffImagePlugin.TiffImageFile)
         im.n_frames
         im.close()
         # Should not raise PermissionError.
         os.remove(tmpfile)
 
-    def test_read_icc(self):
+    def test_read_icc(self, monkeypatch: pytest.MonkeyPatch) -> None:
         with Image.open("Tests/images/hopper.iccprofile.tif") as img:
             icc = img.info.get("icc_profile")
             assert icc is not None
-        TiffImagePlugin.READ_LIBTIFF = True
+        monkeypatch.setattr(TiffImagePlugin, "READ_LIBTIFF", True)
         with Image.open("Tests/images/hopper.iccprofile.tif") as img:
             icc_libtiff = img.info.get("icc_profile")
             assert icc_libtiff is not None
-        TiffImagePlugin.READ_LIBTIFF = False
         assert icc == icc_libtiff
 
-    def test_write_icc(self, tmp_path):
-        def check_write(libtiff):
-            TiffImagePlugin.WRITE_LIBTIFF = libtiff
+    @pytest.mark.parametrize(
+        "libtiff",
+        (
+            pytest.param(
+                True,
+                marks=pytest.mark.skipif(
+                    not getattr(Image.core, "libtiff_support_custom_tags", False),
+                    reason="Custom tags not supported by older libtiff",
+                ),
+            ),
+            False,
+        ),
+    )
+    def test_write_icc(
+        self, monkeypatch: pytest.MonkeyPatch, tmp_path: Path, libtiff: bool
+    ) -> None:
+        monkeypatch.setattr(TiffImagePlugin, "WRITE_LIBTIFF", libtiff)
 
-            with Image.open("Tests/images/hopper.iccprofile.tif") as img:
-                icc_profile = img.info["icc_profile"]
+        with Image.open("Tests/images/hopper.iccprofile.tif") as img:
+            icc_profile = img.info["icc_profile"]
 
-                out = str(tmp_path / "temp.tif")
-                img.save(out, icc_profile=icc_profile)
-            with Image.open(out) as reloaded:
-                assert icc_profile == reloaded.info["icc_profile"]
+            out = str(tmp_path / "temp.tif")
+            img.save(out, icc_profile=icc_profile)
+        with Image.open(out) as reloaded:
+            assert icc_profile == reloaded.info["icc_profile"]
 
-        libtiffs = []
-        if Image.core.libtiff_support_custom_tags:
-            libtiffs.append(True)
-        libtiffs.append(False)
-
-        for libtiff in libtiffs:
-            check_write(libtiff)
-
-    def test_multipage_compression(self):
+    def test_multipage_compression(self) -> None:
         with Image.open("Tests/images/compression.tif") as im:
             im.seek(0)
             assert im._compression == "tiff_ccitt"
@@ -763,7 +804,7 @@ class TestFileLibTiff(LibTiffTestCase):
             assert im.size == (10, 10)
             im.load()
 
-    def test_save_tiff_with_jpegtables(self, tmp_path):
+    def test_save_tiff_with_jpegtables(self, tmp_path: Path) -> None:
         # Arrange
         outfile = str(tmp_path / "temp.tif")
 
@@ -775,7 +816,7 @@ class TestFileLibTiff(LibTiffTestCase):
             # Should not raise UnicodeDecodeError or anything else
             im.save(outfile)
 
-    def test_16bit_RGB_tiff(self):
+    def test_16bit_RGB_tiff(self) -> None:
         with Image.open("Tests/images/tiff_16bit_RGB.tiff") as im:
             assert im.mode == "RGB"
             assert im.size == (100, 40)
@@ -791,7 +832,7 @@ class TestFileLibTiff(LibTiffTestCase):
 
             assert_image_equal_tofile(im, "Tests/images/tiff_16bit_RGB_target.png")
 
-    def test_16bit_RGBa_tiff(self):
+    def test_16bit_RGBa_tiff(self) -> None:
         with Image.open("Tests/images/tiff_16bit_RGBa.tiff") as im:
             assert im.mode == "RGBA"
             assert im.size == (100, 40)
@@ -803,7 +844,7 @@ class TestFileLibTiff(LibTiffTestCase):
             assert_image_equal_tofile(im, "Tests/images/tiff_16bit_RGBa_target.png")
 
     @skip_unless_feature("jpg")
-    def test_gimp_tiff(self):
+    def test_gimp_tiff(self) -> None:
         # Read TIFF JPEG images from GIMP [@PIL168]
         filename = "Tests/images/pil168.tif"
         with Image.open(filename) as im:
@@ -816,25 +857,26 @@ class TestFileLibTiff(LibTiffTestCase):
 
             assert_image_equal_tofile(im, "Tests/images/pil168.png")
 
-    def test_sampleformat(self):
+    def test_sampleformat(self) -> None:
         # https://github.com/python-pillow/Pillow/issues/1466
         with Image.open("Tests/images/copyleft.tiff") as im:
             assert im.mode == "RGB"
 
             assert_image_equal_tofile(im, "Tests/images/copyleft.png", mode="RGB")
 
-    def test_sampleformat_write(self, tmp_path):
+    def test_sampleformat_write(
+        self, monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+    ) -> None:
         im = Image.new("F", (1, 1))
         out = str(tmp_path / "temp.tif")
-        TiffImagePlugin.WRITE_LIBTIFF = True
+        monkeypatch.setattr(TiffImagePlugin, "WRITE_LIBTIFF", True)
         im.save(out)
-        TiffImagePlugin.WRITE_LIBTIFF = False
 
         with Image.open(out) as reloaded:
             assert reloaded.mode == "F"
             assert reloaded.getexif()[SAMPLEFORMAT] == 3
 
-    def test_lzma(self, capfd):
+    def test_lzma(self, capfd: pytest.CaptureFixture[str]) -> None:
         try:
             with Image.open("Tests/images/hopper_lzma.tif") as im:
                 assert im.mode == "RGB"
@@ -850,7 +892,7 @@ class TestFileLibTiff(LibTiffTestCase):
             sys.stderr.write(captured.err)
             raise
 
-    def test_webp(self, capfd):
+    def test_webp(self, capfd: pytest.CaptureFixture[str]) -> None:
         try:
             with Image.open("Tests/images/hopper_webp.tif") as im:
                 assert im.mode == "RGB"
@@ -872,7 +914,7 @@ class TestFileLibTiff(LibTiffTestCase):
             sys.stderr.write(captured.err)
             raise
 
-    def test_lzw(self):
+    def test_lzw(self) -> None:
         with Image.open("Tests/images/hopper_lzw.tif") as im:
             assert im.mode == "RGB"
             assert im.size == (128, 128)
@@ -880,12 +922,12 @@ class TestFileLibTiff(LibTiffTestCase):
             im2 = hopper()
             assert_image_similar(im, im2, 5)
 
-    def test_strip_cmyk_jpeg(self):
+    def test_strip_cmyk_jpeg(self) -> None:
         infile = "Tests/images/tiff_strip_cmyk_jpeg.tif"
         with Image.open(infile) as im:
             assert_image_similar_tofile(im, "Tests/images/pil_sample_cmyk.jpg", 0.5)
 
-    def test_strip_cmyk_16l_jpeg(self):
+    def test_strip_cmyk_16l_jpeg(self) -> None:
         infile = "Tests/images/tiff_strip_cmyk_16l_jpeg.tif"
         with Image.open(infile) as im:
             assert_image_similar_tofile(im, "Tests/images/pil_sample_cmyk.jpg", 0.5)
@@ -893,7 +935,7 @@ class TestFileLibTiff(LibTiffTestCase):
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )
-    def test_strip_ycbcr_jpeg_2x2_sampling(self):
+    def test_strip_ycbcr_jpeg_2x2_sampling(self) -> None:
         infile = "Tests/images/tiff_strip_ycbcr_jpeg_2x2_sampling.tif"
         with Image.open(infile) as im:
             assert_image_similar_tofile(im, "Tests/images/flower.jpg", 1.2)
@@ -901,12 +943,12 @@ class TestFileLibTiff(LibTiffTestCase):
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )
-    def test_strip_ycbcr_jpeg_1x1_sampling(self):
+    def test_strip_ycbcr_jpeg_1x1_sampling(self) -> None:
         infile = "Tests/images/tiff_strip_ycbcr_jpeg_1x1_sampling.tif"
         with Image.open(infile) as im:
             assert_image_similar_tofile(im, "Tests/images/flower2.jpg", 0.01)
 
-    def test_tiled_cmyk_jpeg(self):
+    def test_tiled_cmyk_jpeg(self) -> None:
         infile = "Tests/images/tiff_tiled_cmyk_jpeg.tif"
         with Image.open(infile) as im:
             assert_image_similar_tofile(im, "Tests/images/pil_sample_cmyk.jpg", 0.5)
@@ -914,7 +956,7 @@ class TestFileLibTiff(LibTiffTestCase):
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )
-    def test_tiled_ycbcr_jpeg_1x1_sampling(self):
+    def test_tiled_ycbcr_jpeg_1x1_sampling(self) -> None:
         infile = "Tests/images/tiff_tiled_ycbcr_jpeg_1x1_sampling.tif"
         with Image.open(infile) as im:
             assert_image_similar_tofile(im, "Tests/images/flower2.jpg", 0.01)
@@ -922,45 +964,45 @@ class TestFileLibTiff(LibTiffTestCase):
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )
-    def test_tiled_ycbcr_jpeg_2x2_sampling(self):
+    def test_tiled_ycbcr_jpeg_2x2_sampling(self) -> None:
         infile = "Tests/images/tiff_tiled_ycbcr_jpeg_2x2_sampling.tif"
         with Image.open(infile) as im:
             assert_image_similar_tofile(im, "Tests/images/flower.jpg", 1.5)
 
-    def test_strip_planar_rgb(self):
+    def test_strip_planar_rgb(self) -> None:
         # gdal_translate -co TILED=no -co INTERLEAVE=BAND -co COMPRESS=LZW \
         # tiff_strip_raw.tif tiff_strip_planar_lzw.tiff
         infile = "Tests/images/tiff_strip_planar_lzw.tiff"
         with Image.open(infile) as im:
             assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")
 
-    def test_tiled_planar_rgb(self):
+    def test_tiled_planar_rgb(self) -> None:
         # gdal_translate -co TILED=yes -co INTERLEAVE=BAND -co COMPRESS=LZW \
         # tiff_tiled_raw.tif tiff_tiled_planar_lzw.tiff
         infile = "Tests/images/tiff_tiled_planar_lzw.tiff"
         with Image.open(infile) as im:
             assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")
 
-    def test_tiled_planar_16bit_RGB(self):
+    def test_tiled_planar_16bit_RGB(self) -> None:
         # gdal_translate -co TILED=yes -co INTERLEAVE=BAND -co COMPRESS=LZW \
         # tiff_16bit_RGB.tiff tiff_tiled_planar_16bit_RGB.tiff
         with Image.open("Tests/images/tiff_tiled_planar_16bit_RGB.tiff") as im:
             assert_image_equal_tofile(im, "Tests/images/tiff_16bit_RGB_target.png")
 
-    def test_strip_planar_16bit_RGB(self):
+    def test_strip_planar_16bit_RGB(self) -> None:
         # gdal_translate -co TILED=no -co INTERLEAVE=BAND -co COMPRESS=LZW \
         # tiff_16bit_RGB.tiff tiff_strip_planar_16bit_RGB.tiff
         with Image.open("Tests/images/tiff_strip_planar_16bit_RGB.tiff") as im:
             assert_image_equal_tofile(im, "Tests/images/tiff_16bit_RGB_target.png")
 
-    def test_tiled_planar_16bit_RGBa(self):
+    def test_tiled_planar_16bit_RGBa(self) -> None:
         # gdal_translate -co TILED=yes \
         # -co INTERLEAVE=BAND -co COMPRESS=LZW -co ALPHA=PREMULTIPLIED \
         # tiff_16bit_RGBa.tiff tiff_tiled_planar_16bit_RGBa.tiff
         with Image.open("Tests/images/tiff_tiled_planar_16bit_RGBa.tiff") as im:
             assert_image_equal_tofile(im, "Tests/images/tiff_16bit_RGBa_target.png")
 
-    def test_strip_planar_16bit_RGBa(self):
+    def test_strip_planar_16bit_RGBa(self) -> None:
         # gdal_translate -co TILED=no \
         # -co INTERLEAVE=BAND -co COMPRESS=LZW -co ALPHA=PREMULTIPLIED \
         # tiff_16bit_RGBa.tiff tiff_strip_planar_16bit_RGBa.tiff
@@ -968,7 +1010,7 @@ class TestFileLibTiff(LibTiffTestCase):
             assert_image_equal_tofile(im, "Tests/images/tiff_16bit_RGBa_target.png")
 
     @pytest.mark.parametrize("compression", (None, "jpeg"))
-    def test_block_tile_tags(self, compression, tmp_path):
+    def test_block_tile_tags(self, compression: str | None, tmp_path: Path) -> None:
         im = hopper()
         out = str(tmp_path / "temp.tif")
 
@@ -984,11 +1026,11 @@ class TestFileLibTiff(LibTiffTestCase):
             for tag in tags:
                 assert tag not in reloaded.getexif()
 
-    def test_old_style_jpeg(self):
+    def test_old_style_jpeg(self) -> None:
         with Image.open("Tests/images/old-style-jpeg-compression.tif") as im:
             assert_image_equal_tofile(im, "Tests/images/old-style-jpeg-compression.png")
 
-    def test_open_missing_samplesperpixel(self):
+    def test_open_missing_samplesperpixel(self) -> None:
         with Image.open(
             "Tests/images/old-style-jpeg-compression-no-samplesperpixel.tif"
         ) as im:
@@ -1017,30 +1059,66 @@ class TestFileLibTiff(LibTiffTestCase):
             ),
         ],
     )
-    def test_wrong_bits_per_sample(self, file_name, mode, size, tile):
+    def test_wrong_bits_per_sample(
+        self,
+        file_name: str,
+        mode: str,
+        size: tuple[int, int],
+        tile: list[tuple[str, tuple[int, int, int, int], int, tuple[Any, ...]]],
+    ) -> None:
         with Image.open("Tests/images/" + file_name) as im:
             assert im.mode == mode
             assert im.size == size
             assert im.tile == tile
             im.load()
 
-    def test_no_rows_per_strip(self):
+    def test_no_rows_per_strip(self) -> None:
         # This image does not have a RowsPerStrip TIFF tag
         infile = "Tests/images/no_rows_per_strip.tif"
         with Image.open(infile) as im:
             im.load()
         assert im.size == (950, 975)
 
-    def test_orientation(self):
+    def test_orientation(self) -> None:
         with Image.open("Tests/images/g4_orientation_1.tif") as base_im:
             for i in range(2, 9):
                 with Image.open("Tests/images/g4_orientation_" + str(i) + ".tif") as im:
+                    assert 274 in im.tag_v2
+
                     im.load()
+                    assert 274 not in im.tag_v2
 
                     assert_image_similar(base_im, im, 0.7)
 
+    def test_exif_transpose(self) -> None:
+        with Image.open("Tests/images/g4_orientation_1.tif") as base_im:
+            for i in range(2, 9):
+                with Image.open("Tests/images/g4_orientation_" + str(i) + ".tif") as im:
+                    im = ImageOps.exif_transpose(im)
+
+                    assert_image_similar(base_im, im, 0.7)
+
+    @pytest.mark.parametrize(
+        "test_file",
+        [
+            "Tests/images/old-style-jpeg-compression-no-samplesperpixel.tif",
+            "Tests/images/old-style-jpeg-compression.tif",
+        ],
+    )
+    def test_buffering(self, test_file: str) -> None:
+        # load exif first
+        with Image.open(open(test_file, "rb", buffering=1048576)) as im:
+            exif = dict(im.getexif())
+
+        # load image before exif
+        with Image.open(open(test_file, "rb", buffering=1048576)) as im2:
+            im2.load()
+            exif_after_load = dict(im2.getexif())
+
+        assert exif == exif_after_load
+
     @pytest.mark.valgrind_known_error(reason="Backtrace in Python Core")
-    def test_sampleformat_not_corrupted(self):
+    def test_sampleformat_not_corrupted(self) -> None:
         # Assert that a TIFF image with SampleFormat=UINT tag is not corrupted
         # when saving to a new file.
         # Pillow 6.0 fails with "OSError: cannot identify image file".
@@ -1061,52 +1139,53 @@ class TestFileLibTiff(LibTiffTestCase):
         with Image.open(out) as im:
             im.load()
 
-    def test_realloc_overflow(self):
-        TiffImagePlugin.READ_LIBTIFF = True
+    def test_realloc_overflow(self, monkeypatch: pytest.MonkeyPatch) -> None:
+        monkeypatch.setattr(TiffImagePlugin, "READ_LIBTIFF", True)
         with Image.open("Tests/images/tiff_overflow_rows_per_strip.tif") as im:
             with pytest.raises(OSError) as e:
                 im.load()
 
             # Assert that the error code is IMAGING_CODEC_MEMORY
             assert str(e.value) == "-9"
-        TiffImagePlugin.READ_LIBTIFF = False
 
     @pytest.mark.parametrize("compression", ("tiff_adobe_deflate", "jpeg"))
-    def test_save_multistrip(self, compression, tmp_path):
+    def test_save_multistrip(self, compression: str, tmp_path: Path) -> None:
         im = hopper("RGB").resize((256, 256))
         out = str(tmp_path / "temp.tif")
         im.save(out, compression=compression)
 
         with Image.open(out) as im:
             # Assert that there are multiple strips
+            assert isinstance(im, TiffImagePlugin.TiffImageFile)
             assert len(im.tag_v2[STRIPOFFSETS]) > 1
 
     @pytest.mark.parametrize("argument", (True, False))
-    def test_save_single_strip(self, argument, tmp_path):
+    def test_save_single_strip(self, argument: bool, tmp_path: Path) -> None:
         im = hopper("RGB").resize((256, 256))
         out = str(tmp_path / "temp.tif")
 
         if not argument:
             TiffImagePlugin.STRIP_SIZE = 2**18
         try:
-            arguments = {"compression": "tiff_adobe_deflate"}
+            arguments: dict[str, str | int] = {"compression": "tiff_adobe_deflate"}
             if argument:
                 arguments["strip_size"] = 2**18
-            im.save(out, **arguments)
+            im.save(out, "TIFF", **arguments)
 
             with Image.open(out) as im:
+                assert isinstance(im, TiffImagePlugin.TiffImageFile)
                 assert len(im.tag_v2[STRIPOFFSETS]) == 1
         finally:
             TiffImagePlugin.STRIP_SIZE = 65536
 
     @pytest.mark.parametrize("compression", ("tiff_adobe_deflate", None))
-    def test_save_zero(self, compression, tmp_path):
+    def test_save_zero(self, compression: str | None, tmp_path: Path) -> None:
         im = Image.new("RGB", (0, 0))
         out = str(tmp_path / "temp.tif")
         with pytest.raises(SystemError):
             im.save(out, compression=compression)
 
-    def test_save_many_compressed(self, tmp_path):
+    def test_save_many_compressed(self, tmp_path: Path) -> None:
         im = hopper()
         out = str(tmp_path / "temp.tif")
         for _ in range(10000):
@@ -1120,7 +1199,7 @@ class TestFileLibTiff(LibTiffTestCase):
             ("Tests/images/child_ifd_jpeg.tiff", (20,)),
         ),
     )
-    def test_get_child_images(self, path, sizes):
+    def test_get_child_images(self, path: str, sizes: tuple[int, ...]) -> None:
         with Image.open(path) as im:
             ims = im.get_child_images()
 
diff --git a/Tests/test_file_libtiff_small.py b/Tests/test_file_libtiff_small.py
index 03137c8b6..617e1e89c 100644
--- a/Tests/test_file_libtiff_small.py
+++ b/Tests/test_file_libtiff_small.py
@@ -1,4 +1,7 @@
+from __future__ import annotations
+
 from io import BytesIO
+from pathlib import Path
 
 from PIL import Image
 
@@ -6,7 +9,6 @@ from .test_file_libtiff import LibTiffTestCase
 
 
 class TestFileLibTiffSmall(LibTiffTestCase):
-
     """The small lena image was failing on open in the libtiff
     decoder because the file pointer was set to the wrong place
     by a spurious seek. It wasn't failing with the byteio method.
@@ -15,7 +17,7 @@ class TestFileLibTiffSmall(LibTiffTestCase):
     file just before reading in libtiff. These tests remain
     to ensure that it stays fixed."""
 
-    def test_g4_hopper_file(self, tmp_path):
+    def test_g4_hopper_file(self, tmp_path: Path) -> None:
         """Testing the open file load path"""
 
         test_file = "Tests/images/hopper_g4.tif"
@@ -24,7 +26,7 @@ class TestFileLibTiffSmall(LibTiffTestCase):
                 assert im.size == (128, 128)
                 self._assert_noerr(tmp_path, im)
 
-    def test_g4_hopper_bytesio(self, tmp_path):
+    def test_g4_hopper_bytesio(self, tmp_path: Path) -> None:
         """Testing the bytesio loading code path"""
         test_file = "Tests/images/hopper_g4.tif"
         s = BytesIO()
@@ -35,7 +37,7 @@ class TestFileLibTiffSmall(LibTiffTestCase):
             assert im.size == (128, 128)
             self._assert_noerr(tmp_path, im)
 
-    def test_g4_hopper(self, tmp_path):
+    def test_g4_hopper(self, tmp_path: Path) -> None:
         """The 128x128 lena image failed for some reason."""
 
         test_file = "Tests/images/hopper_g4.tif"
diff --git a/Tests/test_file_mcidas.py b/Tests/test_file_mcidas.py
index 41f22cf0c..e11e6bb52 100644
--- a/Tests/test_file_mcidas.py
+++ b/Tests/test_file_mcidas.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, McIdasImagePlugin
@@ -5,19 +7,19 @@ from PIL import Image, McIdasImagePlugin
 from .helper import assert_image_equal_tofile
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
         McIdasImagePlugin.McIdasImageFile(invalid_file)
 
 
-def test_valid_file():
+def test_valid_file() -> None:
     # Arrange
     # https://ghrc.nsstc.nasa.gov/hydro/details/cmx3g8
     # https://ghrc.nsstc.nasa.gov/pub/fieldCampaigns/camex3/cmx3g8/browse/
     test_file = "Tests/images/cmx3g8_wv_1998.260_0745_mcidas.ara"
-    saved_file = "Tests/images/cmx3g8_wv_1998.260_0745_mcidas.png"
+    saved_file = "Tests/images/cmx3g8_wv_1998.260_0745_mcidas.tiff"
 
     # Act
     with Image.open(test_file) as im:
diff --git a/Tests/test_file_mic.py b/Tests/test_file_mic.py
index 2588d3a05..9a6f13ea3 100644
--- a/Tests/test_file_mic.py
+++ b/Tests/test_file_mic.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, ImagePalette
@@ -11,7 +13,7 @@ pytestmark = skip_unless_feature("libtiff")
 TEST_FILE = "Tests/images/hopper.mic"
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open(TEST_FILE) as im:
         im.load()
         assert im.mode == "RGBA"
@@ -26,22 +28,22 @@ def test_sanity():
         assert_image_similar(im, im2, 10)
 
 
-def test_n_frames():
+def test_n_frames() -> None:
     with Image.open(TEST_FILE) as im:
         assert im.n_frames == 1
 
 
-def test_is_animated():
+def test_is_animated() -> None:
     with Image.open(TEST_FILE) as im:
         assert not im.is_animated
 
 
-def test_tell():
+def test_tell() -> None:
     with Image.open(TEST_FILE) as im:
         assert im.tell() == 0
 
 
-def test_seek():
+def test_seek() -> None:
     with Image.open(TEST_FILE) as im:
         im.seek(0)
         assert im.tell() == 0
@@ -51,7 +53,7 @@ def test_seek():
         assert im.tell() == 0
 
 
-def test_close():
+def test_close() -> None:
     with Image.open(TEST_FILE) as im:
         pass
     assert im.ole.fp.closed
@@ -61,7 +63,7 @@ def test_close():
     assert im.ole.fp.closed
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     # Test an invalid OLE file
     invalid_file = "Tests/images/flower.jpg"
     with pytest.raises(SyntaxError):
diff --git a/Tests/test_file_mpeg.py b/Tests/test_file_mpeg.py
new file mode 100644
index 000000000..468aef8a9
--- /dev/null
+++ b/Tests/test_file_mpeg.py
@@ -0,0 +1,39 @@
+from __future__ import annotations
+
+from io import BytesIO
+
+import pytest
+
+from PIL import Image, MpegImagePlugin
+
+
+def test_identify() -> None:
+    # Arrange
+    b = BytesIO(b"\x00\x00\x01\xb3\x01\x00\x01")
+
+    # Act
+    with Image.open(b) as im:
+        # Assert
+        assert im.format == "MPEG"
+
+        assert im.mode == "RGB"
+        assert im.size == (16, 1)
+
+
+def test_invalid_file() -> None:
+    # Arrange
+    invalid_file = "Tests/images/flower.jpg"
+
+    # Act / Assert
+    with pytest.raises(SyntaxError):
+        MpegImagePlugin.MpegImageFile(invalid_file)
+
+
+def test_load() -> None:
+    # Arrange
+    b = BytesIO(b"\x00\x00\x01\xb3\x01\x00\x01")
+
+    with Image.open(b) as im:
+        # Act / Assert: cannot load
+        with pytest.raises(OSError):
+            im.load()
diff --git a/Tests/test_file_mpo.py b/Tests/test_file_mpo.py
index 2e921e467..949583185 100644
--- a/Tests/test_file_mpo.py
+++ b/Tests/test_file_mpo.py
@@ -1,9 +1,12 @@
+from __future__ import annotations
+
 import warnings
 from io import BytesIO
+from typing import Any
 
 import pytest
 
-from PIL import Image
+from PIL import Image, ImageFile, MpoImagePlugin
 
 from .helper import (
     assert_image_equal,
@@ -17,18 +20,15 @@ test_files = ["Tests/images/sugarshack.mpo", "Tests/images/frozenpond.mpo"]
 pytestmark = skip_unless_feature("jpg")
 
 
-def roundtrip(im, **options):
+def roundtrip(im: Image.Image, **options: Any) -> ImageFile.ImageFile:
     out = BytesIO()
     im.save(out, "MPO", **options)
-    test_bytes = out.tell()
     out.seek(0)
-    im = Image.open(out)
-    im.bytes = test_bytes  # for testing only
-    return im
+    return Image.open(out)
 
 
 @pytest.mark.parametrize("test_file", test_files)
-def test_sanity(test_file):
+def test_sanity(test_file: str) -> None:
     with Image.open(test_file) as im:
         im.load()
         assert im.mode == "RGB"
@@ -37,8 +37,8 @@ def test_sanity(test_file):
 
 
 @pytest.mark.skipif(is_pypy(), reason="Requires CPython")
-def test_unclosed_file():
-    def open():
+def test_unclosed_file() -> None:
+    def open() -> None:
         im = Image.open(test_files[0])
         im.load()
 
@@ -46,14 +46,16 @@ def test_unclosed_file():
         open()
 
 
-def test_closed_file():
+def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         im = Image.open(test_files[0])
         im.load()
         im.close()
 
 
-def test_seek_after_close():
+def test_seek_after_close() -> None:
     im = Image.open(test_files[0])
     im.close()
 
@@ -61,14 +63,16 @@ def test_seek_after_close():
         im.seek(1)
 
 
-def test_context_manager():
+def test_context_manager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with Image.open(test_files[0]) as im:
             im.load()
 
 
 @pytest.mark.parametrize("test_file", test_files)
-def test_app(test_file):
+def test_app(test_file: str) -> None:
     # Test APP/COM reader (@PIL135)
     with Image.open(test_file) as im:
         assert im.applist[0][0] == "APP1"
@@ -80,20 +84,22 @@ def test_app(test_file):
 
 
 @pytest.mark.parametrize("test_file", test_files)
-def test_exif(test_file):
+def test_exif(test_file: str) -> None:
     with Image.open(test_file) as im_original:
         im_reloaded = roundtrip(im_original, save_all=True, exif=im_original.getexif())
 
     for im in (im_original, im_reloaded):
+        assert isinstance(im, MpoImagePlugin.MpoImageFile)
         info = im._getexif()
+        assert info is not None
         assert info[272] == "Nintendo 3DS"
         assert info[296] == 2
         assert info[34665] == 188
 
 
-def test_frame_size():
+def test_frame_size() -> None:
     # This image has been hexedited to contain a different size
-    # in the EXIF data of the second frame
+    # in the SOF marker of the second frame
     with Image.open("Tests/images/sugarshack_frame_size.mpo") as im:
         assert im.size == (640, 480)
 
@@ -104,7 +110,7 @@ def test_frame_size():
         assert im.size == (640, 480)
 
 
-def test_ignore_frame_size():
+def test_ignore_frame_size() -> None:
     # Ignore the different size of the second frame
     # since this is not a "Large Thumbnail" image
     with Image.open("Tests/images/ignore_frame_size.mpo") as im:
@@ -118,7 +124,7 @@ def test_ignore_frame_size():
         assert im.size == (64, 64)
 
 
-def test_parallax():
+def test_parallax() -> None:
     # Nintendo
     with Image.open("Tests/images/sugarshack.mpo") as im:
         exif = im.getexif()
@@ -131,7 +137,7 @@ def test_parallax():
         assert exif.get_ifd(0x927C)[0xB211] == -3.125
 
 
-def test_reload_exif_after_seek():
+def test_reload_exif_after_seek() -> None:
     with Image.open("Tests/images/sugarshack.mpo") as im:
         exif = im.getexif()
         del exif[296]
@@ -141,14 +147,14 @@ def test_reload_exif_after_seek():
 
 
 @pytest.mark.parametrize("test_file", test_files)
-def test_mp(test_file):
+def test_mp(test_file: str) -> None:
     with Image.open(test_file) as im:
         mpinfo = im._getmp()
         assert mpinfo[45056] == b"0100"
         assert mpinfo[45057] == 2
 
 
-def test_mp_offset():
+def test_mp_offset() -> None:
     # This image has been manually hexedited to have an IFD offset of 10
     # in APP2 data, in contrast to normal 8
     with Image.open("Tests/images/sugarshack_ifd_offset.mpo") as im:
@@ -157,7 +163,7 @@ def test_mp_offset():
         assert mpinfo[45057] == 2
 
 
-def test_mp_no_data():
+def test_mp_no_data() -> None:
     # This image has been manually hexedited to have the second frame
     # beyond the end of the file
     with Image.open("Tests/images/sugarshack_no_data.mpo") as im:
@@ -166,7 +172,7 @@ def test_mp_no_data():
 
 
 @pytest.mark.parametrize("test_file", test_files)
-def test_mp_attribute(test_file):
+def test_mp_attribute(test_file: str) -> None:
     with Image.open(test_file) as im:
         mpinfo = im._getmp()
     for frame_number, mpentry in enumerate(mpinfo[0xB002]):
@@ -183,7 +189,7 @@ def test_mp_attribute(test_file):
 
 
 @pytest.mark.parametrize("test_file", test_files)
-def test_seek(test_file):
+def test_seek(test_file: str) -> None:
     with Image.open(test_file) as im:
         assert im.tell() == 0
         # prior to first image raises an error, both blatant and borderline
@@ -207,13 +213,13 @@ def test_seek(test_file):
         assert im.tell() == 0
 
 
-def test_n_frames():
+def test_n_frames() -> None:
     with Image.open("Tests/images/sugarshack.mpo") as im:
         assert im.n_frames == 2
         assert im.is_animated
 
 
-def test_eoferror():
+def test_eoferror() -> None:
     with Image.open("Tests/images/sugarshack.mpo") as im:
         n_frames = im.n_frames
 
@@ -226,8 +232,19 @@ def test_eoferror():
         im.seek(n_frames - 1)
 
 
+def test_adopt_jpeg() -> None:
+    with Image.open("Tests/images/hopper.jpg") as im:
+        with pytest.raises(ValueError):
+            MpoImagePlugin.MpoImageFile.adopt(im)
+
+
+def test_ultra_hdr() -> None:
+    with Image.open("Tests/images/ultrahdr.jpg") as im:
+        assert im.format == "JPEG"
+
+
 @pytest.mark.parametrize("test_file", test_files)
-def test_image_grab(test_file):
+def test_image_grab(test_file: str) -> None:
     with Image.open(test_file) as im:
         assert im.tell() == 0
         im0 = im.tobytes()
@@ -242,7 +259,7 @@ def test_image_grab(test_file):
 
 
 @pytest.mark.parametrize("test_file", test_files)
-def test_save(test_file):
+def test_save(test_file: str) -> None:
     with Image.open(test_file) as im:
         assert im.tell() == 0
         jpg0 = roundtrip(im)
@@ -253,7 +270,7 @@ def test_save(test_file):
         assert_image_similar(im, jpg1, 30)
 
 
-def test_save_all():
+def test_save_all() -> None:
     for test_file in test_files:
         with Image.open(test_file) as im:
             im_reloaded = roundtrip(im, save_all=True)
@@ -270,6 +287,8 @@ def test_save_all():
     im_reloaded = roundtrip(im, save_all=True, append_images=[im2])
 
     assert_image_equal(im, im_reloaded)
+    assert isinstance(im_reloaded, MpoImagePlugin.MpoImageFile)
+    assert im_reloaded.mpinfo is not None
     assert im_reloaded.mpinfo[45056] == b"0100"
 
     im_reloaded.seek(1)
diff --git a/Tests/test_file_msp.py b/Tests/test_file_msp.py
index 497052b05..b0964aabe 100644
--- a/Tests/test_file_msp.py
+++ b/Tests/test_file_msp.py
@@ -1,4 +1,7 @@
+from __future__ import annotations
+
 import os
+from pathlib import Path
 
 import pytest
 
@@ -11,7 +14,7 @@ EXTRA_DIR = "Tests/images/picins"
 YA_EXTRA_DIR = "Tests/images/msp"
 
 
-def test_sanity(tmp_path):
+def test_sanity(tmp_path: Path) -> None:
     test_file = str(tmp_path / "temp.msp")
 
     hopper("1").save(test_file)
@@ -23,14 +26,14 @@ def test_sanity(tmp_path):
         assert im.format == "MSP"
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
         MspImagePlugin.MspImageFile(invalid_file)
 
 
-def test_bad_checksum():
+def test_bad_checksum() -> None:
     # Arrange
     # This was created by forcing Pillow to save with checksum=0
     bad_checksum = "Tests/images/hopper_bad_checksum.msp"
@@ -40,7 +43,7 @@ def test_bad_checksum():
         MspImagePlugin.MspImageFile(bad_checksum)
 
 
-def test_open_windows_v1():
+def test_open_windows_v1() -> None:
     # Arrange
     # Act
     with Image.open(TEST_FILE) as im:
@@ -49,7 +52,7 @@ def test_open_windows_v1():
         assert isinstance(im, MspImagePlugin.MspImageFile)
 
 
-def _assert_file_image_equal(source_path, target_path):
+def _assert_file_image_equal(source_path: str, target_path: str) -> None:
     with Image.open(source_path) as im:
         assert_image_equal_tofile(im, target_path)
 
@@ -57,7 +60,7 @@ def _assert_file_image_equal(source_path, target_path):
 @pytest.mark.skipif(
     not os.path.exists(EXTRA_DIR), reason="Extra image files not installed"
 )
-def test_open_windows_v2():
+def test_open_windows_v2() -> None:
     files = (
         os.path.join(EXTRA_DIR, f)
         for f in os.listdir(EXTRA_DIR)
@@ -70,7 +73,7 @@ def test_open_windows_v2():
 @pytest.mark.skipif(
     not os.path.exists(YA_EXTRA_DIR), reason="Even More Extra image files not installed"
 )
-def test_msp_v2():
+def test_msp_v2() -> None:
     for f in os.listdir(YA_EXTRA_DIR):
         if ".MSP" not in f:
             continue
@@ -78,7 +81,7 @@ def test_msp_v2():
         _assert_file_image_equal(path, path.replace(".MSP", ".png"))
 
 
-def test_cannot_save_wrong_mode(tmp_path):
+def test_cannot_save_wrong_mode(tmp_path: Path) -> None:
     # Arrange
     im = hopper()
     filename = str(tmp_path / "temp.msp")
diff --git a/Tests/test_file_palm.py b/Tests/test_file_palm.py
index be7c8d0c8..194f39b30 100644
--- a/Tests/test_file_palm.py
+++ b/Tests/test_file_palm.py
@@ -1,5 +1,8 @@
+from __future__ import annotations
+
 import os.path
 import subprocess
+from pathlib import Path
 
 import pytest
 
@@ -8,7 +11,7 @@ from PIL import Image
 from .helper import assert_image_equal, hopper, magick_command
 
 
-def helper_save_as_palm(tmp_path, mode):
+def helper_save_as_palm(tmp_path: Path, mode: str) -> None:
     # Arrange
     im = hopper(mode)
     outfile = str(tmp_path / ("temp_" + mode + ".palm"))
@@ -21,17 +24,16 @@ def helper_save_as_palm(tmp_path, mode):
     assert os.path.getsize(outfile) > 0
 
 
-def open_with_magick(magick, tmp_path, f):
+def open_with_magick(magick: list[str], tmp_path: Path, f: str) -> Image.Image:
     outfile = str(tmp_path / "temp.png")
     rc = subprocess.call(
         magick + [f, outfile], stdout=subprocess.DEVNULL, stderr=subprocess.STDOUT
     )
-    if rc:
-        raise OSError
+    assert not rc
     return Image.open(outfile)
 
 
-def roundtrip(tmp_path, mode):
+def roundtrip(tmp_path: Path, mode: str) -> None:
     magick = magick_command()
     if not magick:
         return
@@ -44,7 +46,7 @@ def roundtrip(tmp_path, mode):
     assert_image_equal(converted, im)
 
 
-def test_monochrome(tmp_path):
+def test_monochrome(tmp_path: Path) -> None:
     # Arrange
     mode = "1"
 
@@ -54,7 +56,7 @@ def test_monochrome(tmp_path):
 
 
 @pytest.mark.xfail(reason="Palm P image is wrong")
-def test_p_mode(tmp_path):
+def test_p_mode(tmp_path: Path) -> None:
     # Arrange
     mode = "P"
 
@@ -64,6 +66,6 @@ def test_p_mode(tmp_path):
 
 
 @pytest.mark.parametrize("mode", ("L", "RGB"))
-def test_oserror(tmp_path, mode):
+def test_oserror(tmp_path: Path, mode: str) -> None:
     with pytest.raises(OSError):
         helper_save_as_palm(tmp_path, mode)
diff --git a/Tests/test_file_pcd.py b/Tests/test_file_pcd.py
index dc45a48c1..81a316fc1 100644
--- a/Tests/test_file_pcd.py
+++ b/Tests/test_file_pcd.py
@@ -1,7 +1,9 @@
+from __future__ import annotations
+
 from PIL import Image
 
 
-def test_load_raw():
+def test_load_raw() -> None:
     with Image.open("Tests/images/hopper.pcd") as im:
         im.load()  # should not segfault.
 
diff --git a/Tests/test_file_pcx.py b/Tests/test_file_pcx.py
index 485adf785..b3f38c3e5 100644
--- a/Tests/test_file_pcx.py
+++ b/Tests/test_file_pcx.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+from pathlib import Path
+
 import pytest
 
 from PIL import Image, ImageFile, PcxImagePlugin
@@ -5,7 +9,7 @@ from PIL import Image, ImageFile, PcxImagePlugin
 from .helper import assert_image_equal, hopper
 
 
-def _roundtrip(tmp_path, im):
+def _roundtrip(tmp_path: Path, im: Image.Image) -> None:
     f = str(tmp_path / "temp.pcx")
     im.save(f)
     with Image.open(f) as im2:
@@ -16,7 +20,7 @@ def _roundtrip(tmp_path, im):
         assert_image_equal(im2, im)
 
 
-def test_sanity(tmp_path):
+def test_sanity(tmp_path: Path) -> None:
     for mode in ("1", "L", "P", "RGB"):
         _roundtrip(tmp_path, hopper(mode))
 
@@ -32,7 +36,7 @@ def test_sanity(tmp_path):
         im.save(f)
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
@@ -40,7 +44,7 @@ def test_invalid_file():
 
 
 @pytest.mark.parametrize("mode", ("1", "L", "P", "RGB"))
-def test_odd(tmp_path, mode):
+def test_odd(tmp_path: Path, mode: str) -> None:
     # See issue #523, odd sized images should have a stride that's even.
     # Not that ImageMagick or GIMP write PCX that way.
     # We were not handling properly.
@@ -49,7 +53,7 @@ def test_odd(tmp_path, mode):
     _roundtrip(tmp_path, hopper(mode).resize((511, 511)))
 
 
-def test_odd_read():
+def test_odd_read() -> None:
     # Reading an image with an odd stride, making it malformed
     with Image.open("Tests/images/odd_stride.pcx") as im:
         im.load()
@@ -57,7 +61,7 @@ def test_odd_read():
         assert im.size == (371, 150)
 
 
-def test_pil184():
+def test_pil184() -> None:
     # Check reading of files where xmin/xmax is not zero.
 
     test_file = "Tests/images/pil184.pcx"
@@ -69,23 +73,25 @@ def test_pil184():
         assert im.histogram()[0] + im.histogram()[255] == 447 * 144
 
 
-def test_1px_width(tmp_path):
+def test_1px_width(tmp_path: Path) -> None:
     im = Image.new("L", (1, 256))
     px = im.load()
+    assert px is not None
     for y in range(256):
         px[0, y] = y
     _roundtrip(tmp_path, im)
 
 
-def test_large_count(tmp_path):
+def test_large_count(tmp_path: Path) -> None:
     im = Image.new("L", (256, 1))
     px = im.load()
+    assert px is not None
     for x in range(256):
         px[x, 0] = x // 67 * 67
     _roundtrip(tmp_path, im)
 
 
-def _test_buffer_overflow(tmp_path, im, size=1024):
+def _test_buffer_overflow(tmp_path: Path, im: Image.Image, size: int = 1024) -> None:
     _last = ImageFile.MAXBLOCK
     ImageFile.MAXBLOCK = size
     try:
@@ -94,27 +100,30 @@ def _test_buffer_overflow(tmp_path, im, size=1024):
         ImageFile.MAXBLOCK = _last
 
 
-def test_break_in_count_overflow(tmp_path):
+def test_break_in_count_overflow(tmp_path: Path) -> None:
     im = Image.new("L", (256, 5))
     px = im.load()
+    assert px is not None
     for y in range(4):
         for x in range(256):
             px[x, y] = x % 128
     _test_buffer_overflow(tmp_path, im)
 
 
-def test_break_one_in_loop(tmp_path):
+def test_break_one_in_loop(tmp_path: Path) -> None:
     im = Image.new("L", (256, 5))
     px = im.load()
+    assert px is not None
     for y in range(5):
         for x in range(256):
             px[x, y] = x % 128
     _test_buffer_overflow(tmp_path, im)
 
 
-def test_break_many_in_loop(tmp_path):
+def test_break_many_in_loop(tmp_path: Path) -> None:
     im = Image.new("L", (256, 5))
     px = im.load()
+    assert px is not None
     for y in range(4):
         for x in range(256):
             px[x, y] = x % 128
@@ -123,9 +132,10 @@ def test_break_many_in_loop(tmp_path):
     _test_buffer_overflow(tmp_path, im)
 
 
-def test_break_one_at_end(tmp_path):
+def test_break_one_at_end(tmp_path: Path) -> None:
     im = Image.new("L", (256, 5))
     px = im.load()
+    assert px is not None
     for y in range(5):
         for x in range(256):
             px[x, y] = x % 128
@@ -133,9 +143,10 @@ def test_break_one_at_end(tmp_path):
     _test_buffer_overflow(tmp_path, im)
 
 
-def test_break_many_at_end(tmp_path):
+def test_break_many_at_end(tmp_path: Path) -> None:
     im = Image.new("L", (256, 5))
     px = im.load()
+    assert px is not None
     for y in range(5):
         for x in range(256):
             px[x, y] = x % 128
@@ -145,9 +156,10 @@ def test_break_many_at_end(tmp_path):
     _test_buffer_overflow(tmp_path, im)
 
 
-def test_break_padding(tmp_path):
+def test_break_padding(tmp_path: Path) -> None:
     im = Image.new("L", (257, 5))
     px = im.load()
+    assert px is not None
     for y in range(5):
         for x in range(257):
             px[x, y] = x % 128
diff --git a/Tests/test_file_pdf.py b/Tests/test_file_pdf.py
index 967f5c35e..1d5001b1a 100644
--- a/Tests/test_file_pdf.py
+++ b/Tests/test_file_pdf.py
@@ -1,8 +1,13 @@
+from __future__ import annotations
+
 import io
 import os
 import os.path
 import tempfile
 import time
+from collections.abc import Generator
+from pathlib import Path
+from typing import Any
 
 import pytest
 
@@ -11,7 +16,7 @@ from PIL import Image, PdfParser, features
 from .helper import hopper, mark_if_feature_version, skip_unless_feature
 
 
-def helper_save_as_pdf(tmp_path, mode, **kwargs):
+def helper_save_as_pdf(tmp_path: Path, mode: str, **kwargs: Any) -> str:
     # Arrange
     im = hopper(mode)
     outfile = str(tmp_path / ("temp_" + mode + ".pdf"))
@@ -38,16 +43,33 @@ def helper_save_as_pdf(tmp_path, mode, **kwargs):
 
 
 @pytest.mark.parametrize("mode", ("L", "P", "RGB", "CMYK"))
-def test_save(tmp_path, mode):
+def test_save(tmp_path: Path, mode: str) -> None:
     helper_save_as_pdf(tmp_path, mode)
 
 
 @skip_unless_feature("jpg_2000")
-def test_save_rgba(tmp_path):
-    helper_save_as_pdf(tmp_path, "RGBA")
+@pytest.mark.parametrize("mode", ("LA", "RGBA"))
+def test_save_alpha(tmp_path: Path, mode: str) -> None:
+    helper_save_as_pdf(tmp_path, mode)
 
 
-def test_monochrome(tmp_path):
+def test_p_alpha(tmp_path: Path) -> None:
+    # Arrange
+    outfile = str(tmp_path / "temp.pdf")
+    with Image.open("Tests/images/pil123p.png") as im:
+        assert im.mode == "P"
+        assert isinstance(im.info["transparency"], bytes)
+
+        # Act
+        im.save(outfile)
+
+    # Assert
+    with open(outfile, "rb") as fp:
+        contents = fp.read()
+    assert b"\n/SMask " in contents
+
+
+def test_monochrome(tmp_path: Path) -> None:
     # Arrange
     mode = "1"
 
@@ -56,15 +78,15 @@ def test_monochrome(tmp_path):
     assert os.path.getsize(outfile) < (5000 if features.check("libtiff") else 15000)
 
 
-def test_unsupported_mode(tmp_path):
-    im = hopper("LA")
-    outfile = str(tmp_path / "temp_LA.pdf")
+def test_unsupported_mode(tmp_path: Path) -> None:
+    im = hopper("PA")
+    outfile = str(tmp_path / "temp_PA.pdf")
 
     with pytest.raises(ValueError):
         im.save(outfile)
 
 
-def test_resolution(tmp_path):
+def test_resolution(tmp_path: Path) -> None:
     im = hopper()
 
     outfile = str(tmp_path / "temp.pdf")
@@ -92,11 +114,11 @@ def test_resolution(tmp_path):
         {"dpi": (75, 150), "resolution": 200},
     ),
 )
-def test_dpi(params, tmp_path):
+def test_dpi(params: dict[str, int | tuple[int, int]], tmp_path: Path) -> None:
     im = hopper()
 
     outfile = str(tmp_path / "temp.pdf")
-    im.save(outfile, **params)
+    im.save(outfile, "PDF", **params)
 
     with open(outfile, "rb") as fp:
         contents = fp.read()
@@ -116,7 +138,7 @@ def test_dpi(params, tmp_path):
 @mark_if_feature_version(
     pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
 )
-def test_save_all(tmp_path):
+def test_save_all(tmp_path: Path) -> None:
     # Single frame image
     helper_save_as_pdf(tmp_path, "RGB", save_all=True)
 
@@ -136,7 +158,7 @@ def test_save_all(tmp_path):
         assert os.path.getsize(outfile) > 0
 
         # Test appending using a generator
-        def im_generator(ims):
+        def im_generator(ims: list[Image.Image]) -> Generator[Image.Image, None, None]:
             yield from ims
 
         im.save(outfile, save_all=True, append_images=im_generator(ims))
@@ -152,7 +174,7 @@ def test_save_all(tmp_path):
     assert os.path.getsize(outfile) > 0
 
 
-def test_multiframe_normal_save(tmp_path):
+def test_multiframe_normal_save(tmp_path: Path) -> None:
     # Test saving a multiframe image without save_all
     with Image.open("Tests/images/dispose_bgnd.gif") as im:
         outfile = str(tmp_path / "temp.pdf")
@@ -162,7 +184,7 @@ def test_multiframe_normal_save(tmp_path):
     assert os.path.getsize(outfile) > 0
 
 
-def test_pdf_open(tmp_path):
+def test_pdf_open(tmp_path: Path) -> None:
     # fail on a buffer full of null bytes
     with pytest.raises(PdfParser.PdfFormatError):
         PdfParser.PdfParser(buf=bytearray(65536))
@@ -199,14 +221,15 @@ def test_pdf_open(tmp_path):
             assert not hopper_pdf.should_close_file
 
 
-def test_pdf_append_fails_on_nonexistent_file():
+def test_pdf_append_fails_on_nonexistent_file() -> None:
     im = hopper("RGB")
     with tempfile.TemporaryDirectory() as temp_dir:
         with pytest.raises(OSError):
             im.save(os.path.join(temp_dir, "nonexistent.pdf"), append=True)
 
 
-def check_pdf_pages_consistency(pdf):
+def check_pdf_pages_consistency(pdf: PdfParser.PdfParser) -> None:
+    assert pdf.pages_ref is not None
     pages_info = pdf.read_indirect(pdf.pages_ref)
     assert b"Parent" not in pages_info
     assert b"Kids" in pages_info
@@ -224,7 +247,7 @@ def check_pdf_pages_consistency(pdf):
     assert kids_not_used == []
 
 
-def test_pdf_append(tmp_path):
+def test_pdf_append(tmp_path: Path) -> None:
     # make a PDF file
     pdf_filename = helper_save_as_pdf(tmp_path, "RGB", producer="PdfParser")
 
@@ -275,7 +298,7 @@ def test_pdf_append(tmp_path):
         check_pdf_pages_consistency(pdf)
 
 
-def test_pdf_info(tmp_path):
+def test_pdf_info(tmp_path: Path) -> None:
     # make a PDF file
     pdf_filename = helper_save_as_pdf(
         tmp_path,
@@ -304,7 +327,7 @@ def test_pdf_info(tmp_path):
         check_pdf_pages_consistency(pdf)
 
 
-def test_pdf_append_to_bytesio():
+def test_pdf_append_to_bytesio() -> None:
     im = hopper("RGB")
     f = io.BytesIO()
     im.save(f, format="PDF")
@@ -319,7 +342,7 @@ def test_pdf_append_to_bytesio():
 @pytest.mark.timeout(1)
 @pytest.mark.skipif("PILLOW_VALGRIND_TEST" in os.environ, reason="Valgrind is slower")
 @pytest.mark.parametrize("newline", (b"\r", b"\n"))
-def test_redos(newline):
+def test_redos(newline: bytes) -> None:
     malicious = b" trailer<<>>" + newline * 3456
 
     # This particular exception isn't relevant here.
diff --git a/Tests/test_file_pixar.py b/Tests/test_file_pixar.py
index 315ea4676..8f208cfbf 100644
--- a/Tests/test_file_pixar.py
+++ b/Tests/test_file_pixar.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, PixarImagePlugin
@@ -7,7 +9,7 @@ from .helper import assert_image_similar, hopper
 TEST_FILE = "Tests/images/hopper.pxr"
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open(TEST_FILE) as im:
         im.load()
         assert im.mode == "RGB"
@@ -19,7 +21,7 @@ def test_sanity():
         assert_image_similar(im, im2, 4.8)
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
diff --git a/Tests/test_file_png.py b/Tests/test_file_png.py
index c4db97905..ffafc3c58 100644
--- a/Tests/test_file_png.py
+++ b/Tests/test_file_png.py
@@ -1,8 +1,13 @@
+from __future__ import annotations
+
 import re
 import sys
 import warnings
 import zlib
 from io import BytesIO
+from pathlib import Path
+from types import ModuleType
+from typing import Any, cast
 
 import pytest
 
@@ -19,6 +24,7 @@ from .helper import (
     skip_unless_feature,
 )
 
+ElementTree: ModuleType | None
 try:
     from defusedxml import ElementTree
 except ImportError:
@@ -33,9 +39,9 @@ TEST_PNG_FILE = "Tests/images/hopper.png"
 MAGIC = PngImagePlugin._MAGIC
 
 
-def chunk(cid, *data):
+def chunk(cid: bytes, *data: bytes) -> bytes:
     test_file = BytesIO()
-    PngImagePlugin.putchunk(*(test_file, cid) + data)
+    PngImagePlugin.putchunk(test_file, cid, *data)
     return test_file.getvalue()
 
 
@@ -49,20 +55,20 @@ HEAD = MAGIC + IHDR
 TAIL = IDAT + IEND
 
 
-def load(data):
+def load(data: bytes) -> Image.Image:
     return Image.open(BytesIO(data))
 
 
-def roundtrip(im, **options):
+def roundtrip(im: Image.Image, **options: Any) -> PngImagePlugin.PngImageFile:
     out = BytesIO()
     im.save(out, "PNG", **options)
     out.seek(0)
-    return Image.open(out)
+    return cast(PngImagePlugin.PngImageFile, Image.open(out))
 
 
 @skip_unless_feature("zlib")
 class TestFilePng:
-    def get_chunks(self, filename):
+    def get_chunks(self, filename: str) -> list[bytes]:
         chunks = []
         with open(filename, "rb") as fp:
             fp.read(8)
@@ -77,9 +83,11 @@ class TestFilePng:
                     png.crc(cid, s)
         return chunks
 
-    def test_sanity(self, tmp_path):
+    def test_sanity(self, tmp_path: Path) -> None:
         # internal version number
-        assert re.search(r"\d+\.\d+\.\d+(\.\d+)?$", features.version_codec("zlib"))
+        version = features.version_codec("zlib")
+        assert version is not None
+        assert re.search(r"\d+(\.\d+){1,3}(\.zlib\-ng)?$", version)
 
         test_file = str(tmp_path / "temp.png")
 
@@ -92,21 +100,21 @@ class TestFilePng:
             assert im.format == "PNG"
             assert im.get_format_mimetype() == "image/png"
 
-        for mode in ["1", "L", "P", "RGB", "I", "I;16"]:
+        for mode in ["1", "L", "P", "RGB", "I", "I;16", "I;16B"]:
             im = hopper(mode)
             im.save(test_file)
             with Image.open(test_file) as reloaded:
-                if mode == "I;16":
+                if mode in ("I", "I;16B"):
                     reloaded = reloaded.convert(mode)
                 assert_image_equal(reloaded, im)
 
-    def test_invalid_file(self):
+    def test_invalid_file(self) -> None:
         invalid_file = "Tests/images/flower.jpg"
 
         with pytest.raises(SyntaxError):
             PngImagePlugin.PngImageFile(invalid_file)
 
-    def test_broken(self):
+    def test_broken(self) -> None:
         # Check reading of totally broken files.  In this case, the test
         # file was checked into Subversion as a text file.
 
@@ -115,7 +123,7 @@ class TestFilePng:
             with Image.open(test_file):
                 pass
 
-    def test_bad_text(self):
+    def test_bad_text(self) -> None:
         # Make sure PIL can read malformed tEXt chunks (@PIL152)
 
         im = load(HEAD + chunk(b"tEXt") + TAIL)
@@ -133,7 +141,7 @@ class TestFilePng:
         im = load(HEAD + chunk(b"tEXt", b"spam\0egg\0") + TAIL)
         assert im.info == {"spam": "egg\x00"}
 
-    def test_bad_ztxt(self):
+    def test_bad_ztxt(self) -> None:
         # Test reading malformed zTXt chunks (python-pillow/Pillow#318)
 
         im = load(HEAD + chunk(b"zTXt") + TAIL)
@@ -154,7 +162,7 @@ class TestFilePng:
         im = load(HEAD + chunk(b"zTXt", b"spam\0\0" + zlib.compress(b"egg")) + TAIL)
         assert im.info == {"spam": "egg"}
 
-    def test_bad_itxt(self):
+    def test_bad_itxt(self) -> None:
         im = load(HEAD + chunk(b"iTXt") + TAIL)
         assert im.info == {}
 
@@ -198,7 +206,7 @@ class TestFilePng:
         assert im.info["spam"].lang == "en"
         assert im.info["spam"].tkey == "Spam"
 
-    def test_interlace(self):
+    def test_interlace(self) -> None:
         test_file = "Tests/images/pil123p.png"
         with Image.open(test_file) as im:
             assert_image(im, "P", (162, 150))
@@ -213,7 +221,7 @@ class TestFilePng:
 
             im.load()
 
-    def test_load_transparent_p(self):
+    def test_load_transparent_p(self) -> None:
         test_file = "Tests/images/pil123p.png"
         with Image.open(test_file) as im:
             assert_image(im, "P", (162, 150))
@@ -223,7 +231,7 @@ class TestFilePng:
         # image has 124 unique alpha values
         assert len(im.getchannel("A").getcolors()) == 124
 
-    def test_load_transparent_rgb(self):
+    def test_load_transparent_rgb(self) -> None:
         test_file = "Tests/images/rgb_trns.png"
         with Image.open(test_file) as im:
             assert im.info["transparency"] == (0, 255, 52)
@@ -235,7 +243,7 @@ class TestFilePng:
         # image has 876 transparent pixels
         assert im.getchannel("A").getcolors()[0][0] == 876
 
-    def test_save_p_transparent_palette(self, tmp_path):
+    def test_save_p_transparent_palette(self, tmp_path: Path) -> None:
         in_file = "Tests/images/pil123p.png"
         with Image.open(in_file) as im:
             # 'transparency' contains a byte string with the opacity for
@@ -256,7 +264,7 @@ class TestFilePng:
         # image has 124 unique alpha values
         assert len(im.getchannel("A").getcolors()) == 124
 
-    def test_save_p_single_transparency(self, tmp_path):
+    def test_save_p_single_transparency(self, tmp_path: Path) -> None:
         in_file = "Tests/images/p_trns_single.png"
         with Image.open(in_file) as im:
             # pixel value 164 is full transparent
@@ -279,7 +287,7 @@ class TestFilePng:
         # image has 876 transparent pixels
         assert im.getchannel("A").getcolors()[0][0] == 876
 
-    def test_save_p_transparent_black(self, tmp_path):
+    def test_save_p_transparent_black(self, tmp_path: Path) -> None:
         # check if solid black image with full transparency
         # is supported (check for #1838)
         im = Image.new("RGBA", (10, 10), (0, 0, 0, 0))
@@ -297,9 +305,9 @@ class TestFilePng:
         assert_image(im, "RGBA", (10, 10))
         assert im.getcolors() == [(100, (0, 0, 0, 0))]
 
-    def test_save_greyscale_transparency(self, tmp_path):
-        for mode, num_transparent in {"1": 1994, "L": 559, "I": 559}.items():
-            in_file = "Tests/images/" + mode.lower() + "_trns.png"
+    def test_save_grayscale_transparency(self, tmp_path: Path) -> None:
+        for mode, num_transparent in {"1": 1994, "L": 559, "I;16": 559}.items():
+            in_file = "Tests/images/" + mode.split(";")[0].lower() + "_trns.png"
             with Image.open(in_file) as im:
                 assert im.mode == mode
                 assert im.info["transparency"] == 255
@@ -318,18 +326,20 @@ class TestFilePng:
             test_im_rgba = test_im.convert("RGBA")
             assert test_im_rgba.getchannel("A").getcolors()[0][0] == num_transparent
 
-    def test_save_rgb_single_transparency(self, tmp_path):
+    def test_save_rgb_single_transparency(self, tmp_path: Path) -> None:
         in_file = "Tests/images/caption_6_33_22.png"
         with Image.open(in_file) as im:
             test_file = str(tmp_path / "temp.png")
             im.save(test_file)
 
-    def test_load_verify(self):
+    def test_load_verify(self) -> None:
         # Check open/load/verify exception (@PIL150)
 
         with Image.open(TEST_PNG_FILE) as im:
             # Assert that there is no unclosed file warning
             with warnings.catch_warnings():
+                warnings.simplefilter("error")
+
                 im.verify()
 
         with Image.open(TEST_PNG_FILE) as im:
@@ -337,7 +347,7 @@ class TestFilePng:
             with pytest.raises(RuntimeError):
                 im.verify()
 
-    def test_verify_struct_error(self):
+    def test_verify_struct_error(self) -> None:
         # Check open/load/verify exception (#1755)
 
         # offsets to test, -10: breaks in i32() in read. (OSError)
@@ -353,7 +363,7 @@ class TestFilePng:
                 with pytest.raises((OSError, SyntaxError)):
                     im.verify()
 
-    def test_verify_ignores_crc_error(self):
+    def test_verify_ignores_crc_error(self) -> None:
         # check ignores crc errors in ancillary chunks
 
         chunk_data = chunk(b"tEXt", b"spam")
@@ -370,7 +380,7 @@ class TestFilePng:
         finally:
             ImageFile.LOAD_TRUNCATED_IMAGES = False
 
-    def test_verify_not_ignores_crc_error_in_required_chunk(self):
+    def test_verify_not_ignores_crc_error_in_required_chunk(self) -> None:
         # check does not ignore crc errors in required chunks
 
         image_data = MAGIC + IHDR[:-1] + b"q" + TAIL
@@ -382,18 +392,18 @@ class TestFilePng:
         finally:
             ImageFile.LOAD_TRUNCATED_IMAGES = False
 
-    def test_roundtrip_dpi(self):
+    def test_roundtrip_dpi(self) -> None:
         # Check dpi roundtripping
 
         with Image.open(TEST_PNG_FILE) as im:
             im = roundtrip(im, dpi=(100.33, 100.33))
         assert im.info["dpi"] == (100.33, 100.33)
 
-    def test_load_float_dpi(self):
+    def test_load_float_dpi(self) -> None:
         with Image.open(TEST_PNG_FILE) as im:
             assert im.info["dpi"] == (95.9866, 95.9866)
 
-    def test_roundtrip_text(self):
+    def test_roundtrip_text(self) -> None:
         # Check text roundtripping
 
         with Image.open(TEST_PNG_FILE) as im:
@@ -405,7 +415,7 @@ class TestFilePng:
         assert im.info == {"TXT": "VALUE", "ZIP": "VALUE"}
         assert im.text == {"TXT": "VALUE", "ZIP": "VALUE"}
 
-    def test_roundtrip_itxt(self):
+    def test_roundtrip_itxt(self) -> None:
         # Check iTXt roundtripping
 
         im = Image.new("RGB", (32, 32))
@@ -416,12 +426,14 @@ class TestFilePng:
         im = roundtrip(im, pnginfo=info)
         assert im.info == {"spam": "Eggs", "eggs": "Spam"}
         assert im.text == {"spam": "Eggs", "eggs": "Spam"}
+        assert isinstance(im.text["spam"], PngImagePlugin.iTXt)
         assert im.text["spam"].lang == "en"
         assert im.text["spam"].tkey == "Spam"
+        assert isinstance(im.text["eggs"], PngImagePlugin.iTXt)
         assert im.text["eggs"].lang == "en"
         assert im.text["eggs"].tkey == "Eggs"
 
-    def test_nonunicode_text(self):
+    def test_nonunicode_text(self) -> None:
         # Check so that non-Unicode text is saved as a tEXt rather than iTXt
 
         im = Image.new("RGB", (32, 32))
@@ -430,10 +442,10 @@ class TestFilePng:
         im = roundtrip(im, pnginfo=info)
         assert isinstance(im.info["Text"], str)
 
-    def test_unicode_text(self):
+    def test_unicode_text(self) -> None:
         # Check preservation of non-ASCII characters
 
-        def rt_text(value):
+        def rt_text(value: str) -> None:
             im = Image.new("RGB", (32, 32))
             info = PngImagePlugin.PngInfo()
             info.add_text("Text", value)
@@ -446,7 +458,7 @@ class TestFilePng:
         rt_text(chr(0x4E00) + chr(0x66F0) + chr(0x9FBA) + chr(0x3042) + chr(0xAC00))
         rt_text("A" + chr(0xC4) + chr(0x472) + chr(0x3042))  # Combined
 
-    def test_scary(self):
+    def test_scary(self) -> None:
         # Check reading of evil PNG file.  For information, see:
         # http://scary.beasts.org/security/CESA-2004-001.txt
         # The first byte is removed from pngtest_bad.png
@@ -460,7 +472,7 @@ class TestFilePng:
             with Image.open(pngfile):
                 pass
 
-    def test_trns_rgb(self):
+    def test_trns_rgb(self) -> None:
         # Check writing and reading of tRNS chunks for RGB images.
         # Independent file sample provided by Sebastian Spaeth.
 
@@ -475,7 +487,7 @@ class TestFilePng:
         im = roundtrip(im, transparency=(0, 1, 2))
         assert im.info["transparency"] == (0, 1, 2)
 
-    def test_trns_p(self, tmp_path):
+    def test_trns_p(self, tmp_path: Path) -> None:
         # Check writing a transparency of 0, issue #528
         im = hopper("P")
         im.info["transparency"] = 0
@@ -488,13 +500,13 @@ class TestFilePng:
 
             assert_image_equal(im2.convert("RGBA"), im.convert("RGBA"))
 
-    def test_trns_null(self):
+    def test_trns_null(self) -> None:
         # Check reading images with null tRNS value, issue #1239
         test_file = "Tests/images/tRNS_null_1x1.png"
         with Image.open(test_file) as im:
             assert im.info["transparency"] == 0
 
-    def test_save_icc_profile(self):
+    def test_save_icc_profile(self) -> None:
         with Image.open("Tests/images/icc_profile_none.png") as im:
             assert im.info["icc_profile"] is None
 
@@ -504,41 +516,42 @@ class TestFilePng:
                 im = roundtrip(im, icc_profile=expected_icc)
                 assert im.info["icc_profile"] == expected_icc
 
-    def test_discard_icc_profile(self):
+    def test_discard_icc_profile(self) -> None:
         with Image.open("Tests/images/icc_profile.png") as im:
             assert "icc_profile" in im.info
 
             im = roundtrip(im, icc_profile=None)
         assert "icc_profile" not in im.info
 
-    def test_roundtrip_icc_profile(self):
+    def test_roundtrip_icc_profile(self) -> None:
         with Image.open("Tests/images/icc_profile.png") as im:
             expected_icc = im.info["icc_profile"]
 
             im = roundtrip(im)
         assert im.info["icc_profile"] == expected_icc
 
-    def test_roundtrip_no_icc_profile(self):
+    def test_roundtrip_no_icc_profile(self) -> None:
         with Image.open("Tests/images/icc_profile_none.png") as im:
             assert im.info["icc_profile"] is None
 
             im = roundtrip(im)
         assert "icc_profile" not in im.info
 
-    def test_repr_png(self):
+    def test_repr_png(self) -> None:
         im = hopper()
+        b = im._repr_png_()
+        assert b is not None
 
-        with Image.open(BytesIO(im._repr_png_())) as repr_png:
+        with Image.open(BytesIO(b)) as repr_png:
             assert repr_png.format == "PNG"
             assert_image_equal(im, repr_png)
 
-    def test_repr_png_error(self):
+    def test_repr_png_error_returns_none(self) -> None:
         im = hopper("F")
 
-        with pytest.raises(ValueError):
-            im._repr_png_()
+        assert im._repr_png_() is None
 
-    def test_chunk_order(self, tmp_path):
+    def test_chunk_order(self, tmp_path: Path) -> None:
         with Image.open("Tests/images/icc_profile.png") as im:
             test_file = str(tmp_path / "temp.png")
             im.convert("P").save(test_file, dpi=(100, 100))
@@ -559,17 +572,17 @@ class TestFilePng:
         # pHYs - before IDAT
         assert chunks.index(b"pHYs") < chunks.index(b"IDAT")
 
-    def test_getchunks(self):
+    def test_getchunks(self) -> None:
         im = hopper()
 
         chunks = PngImagePlugin.getchunks(im)
         assert len(chunks) == 3
 
-    def test_read_private_chunks(self):
+    def test_read_private_chunks(self) -> None:
         with Image.open("Tests/images/exif.png") as im:
             assert im.private_chunks == [(b"orNT", b"\x01")]
 
-    def test_roundtrip_private_chunk(self):
+    def test_roundtrip_private_chunk(self) -> None:
         # Check private chunk roundtripping
 
         with Image.open(TEST_PNG_FILE) as im:
@@ -587,7 +600,7 @@ class TestFilePng:
             (b"prIV", b"VALUE3", True),
         ]
 
-    def test_textual_chunks_after_idat(self):
+    def test_textual_chunks_after_idat(self) -> None:
         with Image.open("Tests/images/hopper.png") as im:
             assert "comment" in im.text
             for k, v in {
@@ -614,7 +627,11 @@ class TestFilePng:
         with Image.open("Tests/images/hopper_idat_after_image_end.png") as im:
             assert im.text == {"TXT": "VALUE", "ZIP": "VALUE"}
 
-    def test_padded_idat(self):
+    def test_unknown_compression_method(self) -> None:
+        with pytest.raises(SyntaxError, match="Unknown compression method"):
+            PngImagePlugin.PngImageFile("Tests/images/unknown_compression_method.png")
+
+    def test_padded_idat(self) -> None:
         # This image has been manually hexedited
         # so that the IDAT chunk has padding at the end
         # Set MAXBLOCK to the length of the actual data
@@ -634,7 +651,7 @@ class TestFilePng:
     @pytest.mark.parametrize(
         "cid", (b"IHDR", b"sRGB", b"pHYs", b"acTL", b"fcTL", b"fdAT")
     )
-    def test_truncated_chunks(self, cid):
+    def test_truncated_chunks(self, cid: bytes) -> None:
         fp = BytesIO()
         with PngImagePlugin.PngStream(fp) as png:
             with pytest.raises(ValueError):
@@ -644,16 +661,17 @@ class TestFilePng:
             png.call(cid, 0, 0)
             ImageFile.LOAD_TRUNCATED_IMAGES = False
 
-    def test_specify_bits(self, tmp_path):
+    @pytest.mark.parametrize("save_all", (True, False))
+    def test_specify_bits(self, save_all: bool, tmp_path: Path) -> None:
         im = hopper("P")
 
         out = str(tmp_path / "temp.png")
-        im.save(out, bits=4)
+        im.save(out, bits=4, save_all=save_all)
 
         with Image.open(out) as reloaded:
             assert len(reloaded.png.im_palette[1]) == 48
 
-    def test_plte_length(self, tmp_path):
+    def test_plte_length(self, tmp_path: Path) -> None:
         im = Image.new("P", (1, 1))
         im.putpalette((1, 1, 1))
 
@@ -663,19 +681,23 @@ class TestFilePng:
         with Image.open(out) as reloaded:
             assert len(reloaded.png.im_palette[1]) == 3
 
-    def test_getxmp(self):
+    def test_getxmp(self) -> None:
         with Image.open("Tests/images/color_snakes.png") as im:
             if ElementTree is None:
-                with pytest.warns(UserWarning):
+                with pytest.warns(
+                    UserWarning,
+                    match="XMP data cannot be read without defusedxml dependency",
+                ):
                     assert im.getxmp() == {}
             else:
+                assert "xmp" in im.info
                 xmp = im.getxmp()
 
                 description = xmp["xmpmeta"]["RDF"]["Description"]
                 assert description["PixelXDimension"] == "10"
                 assert description["subject"]["Seq"] is None
 
-    def test_exif(self):
+    def test_exif(self) -> None:
         # With an EXIF chunk
         with Image.open("Tests/images/exif.png") as im:
             exif = im._getexif()
@@ -701,7 +723,7 @@ class TestFilePng:
             exif = im.getexif()
         assert exif[274] == 3
 
-    def test_exif_save(self, tmp_path):
+    def test_exif_save(self, tmp_path: Path) -> None:
         # Test exif is not saved from info
         test_file = str(tmp_path / "temp.png")
         with Image.open("Tests/images/exif.png") as im:
@@ -721,7 +743,7 @@ class TestFilePng:
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )
-    def test_exif_from_jpg(self, tmp_path):
+    def test_exif_from_jpg(self, tmp_path: Path) -> None:
         with Image.open("Tests/images/pil_sample_rgb.jpg") as im:
             test_file = str(tmp_path / "temp.png")
             im.save(test_file, exif=im.getexif())
@@ -730,7 +752,7 @@ class TestFilePng:
             exif = reloaded._getexif()
         assert exif[305] == "Adobe Photoshop CS Macintosh"
 
-    def test_exif_argument(self, tmp_path):
+    def test_exif_argument(self, tmp_path: Path) -> None:
         with Image.open(TEST_PNG_FILE) as im:
             test_file = str(tmp_path / "temp.png")
             im.save(test_file, exif=b"exifstring")
@@ -738,11 +760,11 @@ class TestFilePng:
         with Image.open(test_file) as reloaded:
             assert reloaded.info["exif"] == b"Exif\x00\x00exifstring"
 
-    def test_tell(self):
+    def test_tell(self) -> None:
         with Image.open(TEST_PNG_FILE) as im:
             assert im.tell() == 0
 
-    def test_seek(self):
+    def test_seek(self) -> None:
         with Image.open(TEST_PNG_FILE) as im:
             im.seek(0)
 
@@ -750,17 +772,13 @@ class TestFilePng:
                 im.seek(1)
 
     @pytest.mark.parametrize("buffer", (True, False))
-    def test_save_stdout(self, buffer):
+    def test_save_stdout(self, buffer: bool) -> None:
         old_stdout = sys.stdout
 
-        if buffer:
+        class MyStdOut:
+            buffer = BytesIO()
 
-            class MyStdOut:
-                buffer = BytesIO()
-
-            mystdout = MyStdOut()
-        else:
-            mystdout = BytesIO()
+        mystdout: MyStdOut | BytesIO = MyStdOut() if buffer else BytesIO()
 
         sys.stdout = mystdout
 
@@ -770,11 +788,23 @@ class TestFilePng:
         # Reset stdout
         sys.stdout = old_stdout
 
-        if buffer:
+        if isinstance(mystdout, MyStdOut):
             mystdout = mystdout.buffer
         with Image.open(mystdout) as reloaded:
             assert_image_equal_tofile(reloaded, TEST_PNG_FILE)
 
+    def test_truncated_end_chunk(self) -> None:
+        with Image.open("Tests/images/truncated_end_chunk.png") as im:
+            with pytest.raises(OSError):
+                im.load()
+
+        ImageFile.LOAD_TRUNCATED_IMAGES = True
+        try:
+            with Image.open("Tests/images/truncated_end_chunk.png") as im:
+                assert_image_equal_tofile(im, "Tests/images/hopper.png")
+        finally:
+            ImageFile.LOAD_TRUNCATED_IMAGES = False
+
 
 @pytest.mark.skipif(is_win32(), reason="Requires Unix or macOS")
 @skip_unless_feature("zlib")
@@ -782,7 +812,7 @@ class TestTruncatedPngPLeaks(PillowLeakTestCase):
     mem_limit = 2 * 1024  # max increase in K
     iterations = 100  # Leak is 56k/iteration, this will leak 5.6megs
 
-    def test_leak_load(self):
+    def test_leak_load(self) -> None:
         with open("Tests/images/hopper.png", "rb") as f:
             DATA = BytesIO(f.read(16 * 1024))
 
@@ -790,7 +820,7 @@ class TestTruncatedPngPLeaks(PillowLeakTestCase):
         with Image.open(DATA) as im:
             im.load()
 
-        def core():
+        def core() -> None:
             with Image.open(DATA) as im:
                 im.load()
 
diff --git a/Tests/test_file_ppm.py b/Tests/test_file_ppm.py
index 292642ca9..fb08d613a 100644
--- a/Tests/test_file_ppm.py
+++ b/Tests/test_file_ppm.py
@@ -1,17 +1,25 @@
+from __future__ import annotations
+
 import sys
 from io import BytesIO
+from pathlib import Path
 
 import pytest
 
 from PIL import Image, PpmImagePlugin
 
-from .helper import assert_image_equal_tofile, assert_image_similar, hopper
+from .helper import (
+    assert_image_equal,
+    assert_image_equal_tofile,
+    assert_image_similar,
+    hopper,
+)
 
 # sample ppm stream
 TEST_FILE = "Tests/images/hopper.ppm"
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open(TEST_FILE) as im:
         assert im.mode == "RGB"
         assert im.size == (128, 128)
@@ -62,7 +70,9 @@ def test_sanity():
         ),
     ),
 )
-def test_arbitrary_maxval(data, mode, pixels):
+def test_arbitrary_maxval(
+    data: bytes, mode: str, pixels: tuple[int | tuple[int, int, int], ...]
+) -> None:
     fp = BytesIO(data)
     with Image.open(fp) as im:
         assert im.size == (3, 1)
@@ -72,31 +82,71 @@ def test_arbitrary_maxval(data, mode, pixels):
         assert tuple(px[x, 0] for x in range(3)) == pixels
 
 
-def test_16bit_pgm():
+def test_16bit_pgm() -> None:
     with Image.open("Tests/images/16_bit_binary.pgm") as im:
         assert im.mode == "I"
         assert im.size == (20, 100)
         assert im.get_format_mimetype() == "image/x-portable-graymap"
 
-        assert_image_equal_tofile(im, "Tests/images/16_bit_binary_pgm.png")
+        assert_image_equal_tofile(im, "Tests/images/16_bit_binary_pgm.tiff")
 
 
-def test_16bit_pgm_write(tmp_path):
+def test_16bit_pgm_write(tmp_path: Path) -> None:
     with Image.open("Tests/images/16_bit_binary.pgm") as im:
-        f = str(tmp_path / "temp.pgm")
-        im.save(f, "PPM")
+        filename = str(tmp_path / "temp.pgm")
+        im.save(filename, "PPM")
+        assert_image_equal_tofile(im, filename)
 
-        assert_image_equal_tofile(im, f)
+        im.convert("I;16").save(filename, "PPM")
+        assert_image_equal_tofile(im, filename)
 
 
-def test_pnm(tmp_path):
+def test_pnm(tmp_path: Path) -> None:
     with Image.open("Tests/images/hopper.pnm") as im:
         assert_image_similar(im, hopper(), 0.0001)
 
-        f = str(tmp_path / "temp.pnm")
-        im.save(f)
+        filename = str(tmp_path / "temp.pnm")
+        im.save(filename)
 
-        assert_image_equal_tofile(im, f)
+        assert_image_equal_tofile(im, filename)
+
+
+def test_pfm(tmp_path: Path) -> None:
+    with Image.open("Tests/images/hopper.pfm") as im:
+        assert im.info["scale"] == 1.0
+        assert_image_equal(im, hopper("F"))
+
+        filename = str(tmp_path / "tmp.pfm")
+        im.save(filename)
+
+        assert_image_equal_tofile(im, filename)
+
+
+def test_pfm_big_endian(tmp_path: Path) -> None:
+    with Image.open("Tests/images/hopper_be.pfm") as im:
+        assert im.info["scale"] == 2.5
+        assert_image_equal(im, hopper("F"))
+
+        filename = str(tmp_path / "tmp.pfm")
+        im.save(filename)
+
+        assert_image_equal_tofile(im, filename)
+
+
+@pytest.mark.parametrize(
+    "data",
+    [
+        b"Pf 1 1 NaN \0\0\0\0",
+        b"Pf 1 1 inf \0\0\0\0",
+        b"Pf 1 1 -inf \0\0\0\0",
+        b"Pf 1 1 0.0 \0\0\0\0",
+        b"Pf 1 1 -0.0 \0\0\0\0",
+    ],
+)
+def test_pfm_invalid(data: bytes) -> None:
+    with pytest.raises(ValueError):
+        with Image.open(BytesIO(data)):
+            pass
 
 
 @pytest.mark.parametrize(
@@ -116,12 +166,12 @@ def test_pnm(tmp_path):
         ),
     ),
 )
-def test_plain(plain_path, raw_path):
+def test_plain(plain_path: str, raw_path: str) -> None:
     with Image.open(plain_path) as im:
         assert_image_equal_tofile(im, raw_path)
 
 
-def test_16bit_plain_pgm():
+def test_16bit_plain_pgm() -> None:
     # P2 with maxval 2 ** 16 - 1
     with Image.open("Tests/images/hopper_16bit_plain.pgm") as im:
         assert im.mode == "I"
@@ -140,7 +190,9 @@ def test_16bit_plain_pgm():
         (b"P3\n2 2\n255", b"0 0 0 001 1 1 2 2 2 255 255 255", 10**6),
     ),
 )
-def test_plain_data_with_comment(tmp_path, header, data, comment_count):
+def test_plain_data_with_comment(
+    tmp_path: Path, header: bytes, data: bytes, comment_count: int
+) -> None:
     path1 = str(tmp_path / "temp1.ppm")
     path2 = str(tmp_path / "temp2.ppm")
     comment = b"# comment" * comment_count
@@ -153,7 +205,7 @@ def test_plain_data_with_comment(tmp_path, header, data, comment_count):
 
 
 @pytest.mark.parametrize("data", (b"P1\n128 128\n", b"P3\n128 128\n255\n"))
-def test_plain_truncated_data(tmp_path, data):
+def test_plain_truncated_data(tmp_path: Path, data: bytes) -> None:
     path = str(tmp_path / "temp.ppm")
     with open(path, "wb") as f:
         f.write(data)
@@ -164,7 +216,7 @@ def test_plain_truncated_data(tmp_path, data):
 
 
 @pytest.mark.parametrize("data", (b"P1\n128 128\n1009", b"P3\n128 128\n255\n100A"))
-def test_plain_invalid_data(tmp_path, data):
+def test_plain_invalid_data(tmp_path: Path, data: bytes) -> None:
     path = str(tmp_path / "temp.ppm")
     with open(path, "wb") as f:
         f.write(data)
@@ -181,7 +233,7 @@ def test_plain_invalid_data(tmp_path, data):
         b"P3\n128 128\n255\n012345678910 0",  # token too long
     ),
 )
-def test_plain_ppm_token_too_long(tmp_path, data):
+def test_plain_ppm_token_too_long(tmp_path: Path, data: bytes) -> None:
     path = str(tmp_path / "temp.ppm")
     with open(path, "wb") as f:
         f.write(data)
@@ -191,22 +243,32 @@ def test_plain_ppm_token_too_long(tmp_path, data):
             im.load()
 
 
-def test_plain_ppm_value_too_large(tmp_path):
+def test_plain_ppm_value_negative(tmp_path: Path) -> None:
+    path = str(tmp_path / "temp.ppm")
+    with open(path, "wb") as f:
+        f.write(b"P3\n128 128\n255\n-1")
+
+    with Image.open(path) as im:
+        with pytest.raises(ValueError, match="Channel value is negative"):
+            im.load()
+
+
+def test_plain_ppm_value_too_large(tmp_path: Path) -> None:
     path = str(tmp_path / "temp.ppm")
     with open(path, "wb") as f:
         f.write(b"P3\n128 128\n255\n256")
 
     with Image.open(path) as im:
-        with pytest.raises(ValueError):
+        with pytest.raises(ValueError, match="Channel value too large"):
             im.load()
 
 
-def test_magic():
+def test_magic() -> None:
     with pytest.raises(SyntaxError):
         PpmImagePlugin.PpmImageFile(fp=BytesIO(b"PyInvalid"))
 
 
-def test_header_with_comments(tmp_path):
+def test_header_with_comments(tmp_path: Path) -> None:
     path = str(tmp_path / "temp.ppm")
     with open(path, "wb") as f:
         f.write(b"P6 #comment\n#comment\r12#comment\r8\n128 #comment\n255\n")
@@ -215,7 +277,7 @@ def test_header_with_comments(tmp_path):
         assert im.size == (128, 128)
 
 
-def test_non_integer_token(tmp_path):
+def test_non_integer_token(tmp_path: Path) -> None:
     path = str(tmp_path / "temp.ppm")
     with open(path, "wb") as f:
         f.write(b"P6\nTEST")
@@ -225,7 +287,7 @@ def test_non_integer_token(tmp_path):
             pass
 
 
-def test_header_token_too_long(tmp_path):
+def test_header_token_too_long(tmp_path: Path) -> None:
     path = str(tmp_path / "temp.ppm")
     with open(path, "wb") as f:
         f.write(b"P6\n 01234567890")
@@ -237,7 +299,7 @@ def test_header_token_too_long(tmp_path):
     assert str(e.value) == "Token too long in file header: 01234567890"
 
 
-def test_truncated_file(tmp_path):
+def test_truncated_file(tmp_path: Path) -> None:
     # Test EOF in header
     path = str(tmp_path / "temp.pgm")
     with open(path, "wb") as f:
@@ -256,7 +318,7 @@ def test_truncated_file(tmp_path):
             im.load()
 
 
-def test_not_enough_image_data(tmp_path):
+def test_not_enough_image_data(tmp_path: Path) -> None:
     path = str(tmp_path / "temp.ppm")
     with open(path, "wb") as f:
         f.write(b"P2 1 2 255 255")
@@ -267,7 +329,7 @@ def test_not_enough_image_data(tmp_path):
 
 
 @pytest.mark.parametrize("maxval", (b"0", b"65536"))
-def test_invalid_maxval(maxval, tmp_path):
+def test_invalid_maxval(maxval: bytes, tmp_path: Path) -> None:
     path = str(tmp_path / "temp.ppm")
     with open(path, "wb") as f:
         f.write(b"P6\n3 1 " + maxval)
@@ -279,7 +341,7 @@ def test_invalid_maxval(maxval, tmp_path):
     assert str(e.value) == "maxval must be greater than 0 and less than 65536"
 
 
-def test_neg_ppm():
+def test_neg_ppm() -> None:
     # Storage.c accepted negative values for xsize, ysize.  the
     # internal open_ppm function didn't check for sanity but it
     # has been removed. The default opener doesn't accept negative
@@ -290,7 +352,7 @@ def test_neg_ppm():
             pass
 
 
-def test_mimetypes(tmp_path):
+def test_mimetypes(tmp_path: Path) -> None:
     path = str(tmp_path / "temp.pgm")
 
     with open(path, "wb") as f:
@@ -305,17 +367,13 @@ def test_mimetypes(tmp_path):
 
 
 @pytest.mark.parametrize("buffer", (True, False))
-def test_save_stdout(buffer):
+def test_save_stdout(buffer: bool) -> None:
     old_stdout = sys.stdout
 
-    if buffer:
+    class MyStdOut:
+        buffer = BytesIO()
 
-        class MyStdOut:
-            buffer = BytesIO()
-
-        mystdout = MyStdOut()
-    else:
-        mystdout = BytesIO()
+    mystdout: MyStdOut | BytesIO = MyStdOut() if buffer else BytesIO()
 
     sys.stdout = mystdout
 
@@ -325,7 +383,7 @@ def test_save_stdout(buffer):
     # Reset stdout
     sys.stdout = old_stdout
 
-    if buffer:
+    if isinstance(mystdout, MyStdOut):
         mystdout = mystdout.buffer
     with Image.open(mystdout) as reloaded:
         assert_image_equal_tofile(reloaded, TEST_FILE)
diff --git a/Tests/test_file_psd.py b/Tests/test_file_psd.py
index e405834b5..5f22001f3 100644
--- a/Tests/test_file_psd.py
+++ b/Tests/test_file_psd.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import warnings
 
 import pytest
@@ -9,7 +11,7 @@ from .helper import assert_image_equal_tofile, assert_image_similar, hopper, is_
 test_file = "Tests/images/hopper.psd"
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open(test_file) as im:
         im.load()
         assert im.mode == "RGB"
@@ -22,8 +24,8 @@ def test_sanity():
 
 
 @pytest.mark.skipif(is_pypy(), reason="Requires CPython")
-def test_unclosed_file():
-    def open():
+def test_unclosed_file() -> None:
+    def open() -> None:
         im = Image.open(test_file)
         im.load()
 
@@ -31,27 +33,31 @@ def test_unclosed_file():
         open()
 
 
-def test_closed_file():
+def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         im = Image.open(test_file)
         im.load()
         im.close()
 
 
-def test_context_manager():
+def test_context_manager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with Image.open(test_file) as im:
             im.load()
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
         PsdImagePlugin.PsdImageFile(invalid_file)
 
 
-def test_n_frames():
+def test_n_frames() -> None:
     with Image.open("Tests/images/hopper_merged.psd") as im:
         assert im.n_frames == 1
         assert not im.is_animated
@@ -62,7 +68,7 @@ def test_n_frames():
             assert im.is_animated
 
 
-def test_eoferror():
+def test_eoferror() -> None:
     with Image.open(test_file) as im:
         # PSD seek index starts at 1 rather than 0
         n_frames = im.n_frames + 1
@@ -76,7 +82,7 @@ def test_eoferror():
         im.seek(n_frames - 1)
 
 
-def test_seek_tell():
+def test_seek_tell() -> None:
     with Image.open(test_file) as im:
         layer_number = im.tell()
         assert layer_number == 1
@@ -93,25 +99,35 @@ def test_seek_tell():
         assert layer_number == 2
 
 
-def test_seek_eoferror():
+def test_seek_eoferror() -> None:
     with Image.open(test_file) as im:
         with pytest.raises(EOFError):
             im.seek(-1)
 
 
-def test_open_after_exclusive_load():
+def test_open_after_exclusive_load() -> None:
     with Image.open(test_file) as im:
         im.load()
         im.seek(im.tell() + 1)
         im.load()
 
 
-def test_rgba():
+def test_rgba() -> None:
     with Image.open("Tests/images/rgba.psd") as im:
         assert_image_equal_tofile(im, "Tests/images/imagedraw_square.png")
 
 
-def test_icc_profile():
+def test_negative_top_left_layer() -> None:
+    with Image.open("Tests/images/negative_top_left_layer.psd") as im:
+        assert im.layers[0][2] == (-50, -50, 50, 50)
+
+
+def test_layer_skip() -> None:
+    with Image.open("Tests/images/five_channels.psd") as im:
+        assert im.n_frames == 1
+
+
+def test_icc_profile() -> None:
     with Image.open(test_file) as im:
         assert "icc_profile" in im.info
 
@@ -119,12 +135,12 @@ def test_icc_profile():
         assert len(icc_profile) == 3144
 
 
-def test_no_icc_profile():
+def test_no_icc_profile() -> None:
     with Image.open("Tests/images/hopper_merged.psd") as im:
         assert "icc_profile" not in im.info
 
 
-def test_combined_larger_than_size():
+def test_combined_larger_than_size() -> None:
     # The combined size of the individual parts is larger than the
     # declared 'size' of the extra data field, resulting in a backwards seek.
 
@@ -138,20 +154,26 @@ def test_combined_larger_than_size():
 @pytest.mark.parametrize(
     "test_file,raises",
     [
-        (
-            "Tests/images/timeout-1ee28a249896e05b83840ae8140622de8e648ba9.psd",
-            Image.UnidentifiedImageError,
-        ),
-        (
-            "Tests/images/timeout-598843abc37fc080ec36a2699ebbd44f795d3a6f.psd",
-            Image.UnidentifiedImageError,
-        ),
         ("Tests/images/timeout-c8efc3fded6426986ba867a399791bae544f59bc.psd", OSError),
         ("Tests/images/timeout-dedc7a4ebd856d79b4359bbcc79e8ef231ce38f6.psd", OSError),
     ],
 )
-def test_crashes(test_file, raises):
+def test_crashes(test_file: str, raises: type[Exception]) -> None:
     with open(test_file, "rb") as f:
         with pytest.raises(raises):
             with Image.open(f):
                 pass
+
+
+@pytest.mark.parametrize(
+    "test_file",
+    [
+        "Tests/images/timeout-1ee28a249896e05b83840ae8140622de8e648ba9.psd",
+        "Tests/images/timeout-598843abc37fc080ec36a2699ebbd44f795d3a6f.psd",
+    ],
+)
+def test_layer_crashes(test_file: str) -> None:
+    with open(test_file, "rb") as f:
+        with Image.open(f) as im:
+            with pytest.raises(SyntaxError):
+                im.layers
diff --git a/Tests/test_file_qoi.py b/Tests/test_file_qoi.py
index f33eada61..fd4b981ce 100644
--- a/Tests/test_file_qoi.py
+++ b/Tests/test_file_qoi.py
@@ -1,11 +1,13 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, QoiImagePlugin
 
-from .helper import assert_image_equal_tofile, assert_image_similar_tofile
+from .helper import assert_image_equal_tofile
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open("Tests/images/hopper.qoi") as im:
         assert im.mode == "RGB"
         assert im.size == (128, 128)
@@ -18,10 +20,10 @@ def test_sanity():
         assert im.size == (162, 150)
         assert im.format == "QOI"
 
-        assert_image_similar_tofile(im, "Tests/images/pil123rgba.png", 0.03)
+        assert_image_equal_tofile(im, "Tests/images/pil123rgba.png")
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
diff --git a/Tests/test_file_sgi.py b/Tests/test_file_sgi.py
index 6a5d8887d..e13a8019e 100644
--- a/Tests/test_file_sgi.py
+++ b/Tests/test_file_sgi.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+from pathlib import Path
+
 import pytest
 
 from PIL import Image, SgiImagePlugin
@@ -10,7 +14,7 @@ from .helper import (
 )
 
 
-def test_rgb():
+def test_rgb() -> None:
     # Created with ImageMagick then renamed:
     # convert hopper.ppm -compress None sgi:hopper.rgb
     test_file = "Tests/images/hopper.rgb"
@@ -20,11 +24,11 @@ def test_rgb():
         assert im.get_format_mimetype() == "image/rgb"
 
 
-def test_rgb16():
+def test_rgb16() -> None:
     assert_image_equal_tofile(hopper(), "Tests/images/hopper16.rgb")
 
 
-def test_l():
+def test_l() -> None:
     # Created with ImageMagick
     # convert hopper.ppm -monochrome -compress None sgi:hopper.bw
     test_file = "Tests/images/hopper.bw"
@@ -34,7 +38,7 @@ def test_l():
         assert im.get_format_mimetype() == "image/sgi"
 
 
-def test_rgba():
+def test_rgba() -> None:
     # Created with ImageMagick:
     # convert transparent.png -compress None transparent.sgi
     test_file = "Tests/images/transparent.sgi"
@@ -44,7 +48,7 @@ def test_rgba():
         assert im.get_format_mimetype() == "image/sgi"
 
 
-def test_rle():
+def test_rle() -> None:
     # Created with ImageMagick:
     # convert hopper.ppm  hopper.sgi
     test_file = "Tests/images/hopper.sgi"
@@ -53,22 +57,22 @@ def test_rle():
         assert_image_equal_tofile(im, "Tests/images/hopper.rgb")
 
 
-def test_rle16():
+def test_rle16() -> None:
     test_file = "Tests/images/tv16.sgi"
 
     with Image.open(test_file) as im:
         assert_image_equal_tofile(im, "Tests/images/tv.rgb")
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(ValueError):
         SgiImagePlugin.SgiImageFile(invalid_file)
 
 
-def test_write(tmp_path):
-    def roundtrip(img):
+def test_write(tmp_path: Path) -> None:
+    def roundtrip(img: Image.Image) -> None:
         out = str(tmp_path / "temp.sgi")
         img.save(out, format="sgi")
         assert_image_equal_tofile(img, out)
@@ -87,7 +91,7 @@ def test_write(tmp_path):
     roundtrip(Image.new("L", (10, 1)))
 
 
-def test_write16(tmp_path):
+def test_write16(tmp_path: Path) -> None:
     test_file = "Tests/images/hopper16.rgb"
 
     with Image.open(test_file) as im:
@@ -97,7 +101,7 @@ def test_write16(tmp_path):
         assert_image_equal_tofile(im, out)
 
 
-def test_unsupported_mode(tmp_path):
+def test_unsupported_mode(tmp_path: Path) -> None:
     im = hopper("LA")
     out = str(tmp_path / "temp.sgi")
 
diff --git a/Tests/test_file_spider.py b/Tests/test_file_spider.py
index 09f1ef8e4..4cafda865 100644
--- a/Tests/test_file_spider.py
+++ b/Tests/test_file_spider.py
@@ -1,17 +1,20 @@
+from __future__ import annotations
+
 import tempfile
 import warnings
 from io import BytesIO
+from pathlib import Path
 
 import pytest
 
 from PIL import Image, ImageSequence, SpiderImagePlugin
 
-from .helper import assert_image_equal_tofile, hopper, is_pypy
+from .helper import assert_image_equal, hopper, is_pypy
 
 TEST_FILE = "Tests/images/hopper.spider"
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open(TEST_FILE) as im:
         im.load()
         assert im.mode == "F"
@@ -20,8 +23,8 @@ def test_sanity():
 
 
 @pytest.mark.skipif(is_pypy(), reason="Requires CPython")
-def test_unclosed_file():
-    def open():
+def test_unclosed_file() -> None:
+    def open() -> None:
         im = Image.open(TEST_FILE)
         im.load()
 
@@ -29,20 +32,24 @@ def test_unclosed_file():
         open()
 
 
-def test_closed_file():
+def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         im = Image.open(TEST_FILE)
         im.load()
         im.close()
 
 
-def test_context_manager():
+def test_context_manager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with Image.open(TEST_FILE) as im:
             im.load()
 
 
-def test_save(tmp_path):
+def test_save(tmp_path: Path) -> None:
     # Arrange
     temp = str(tmp_path / "temp.spider")
     im = hopper()
@@ -57,7 +64,7 @@ def test_save(tmp_path):
         assert im2.format == "SPIDER"
 
 
-def test_tempfile():
+def test_tempfile() -> None:
     # Arrange
     im = hopper()
 
@@ -73,11 +80,11 @@ def test_tempfile():
             assert reloaded.format == "SPIDER"
 
 
-def test_is_spider_image():
+def test_is_spider_image() -> None:
     assert SpiderImagePlugin.isSpiderImage(TEST_FILE)
 
 
-def test_tell():
+def test_tell() -> None:
     # Arrange
     with Image.open(TEST_FILE) as im:
         # Act
@@ -87,13 +94,13 @@ def test_tell():
         assert index == 0
 
 
-def test_n_frames():
+def test_n_frames() -> None:
     with Image.open(TEST_FILE) as im:
         assert im.n_frames == 1
         assert not im.is_animated
 
 
-def test_load_image_series():
+def test_load_image_series() -> None:
     # Arrange
     not_spider_file = "Tests/images/hopper.ppm"
     file_list = [TEST_FILE, not_spider_file, "path/not_found.ext"]
@@ -102,12 +109,13 @@ def test_load_image_series():
     img_list = SpiderImagePlugin.loadImageSeries(file_list)
 
     # Assert
+    assert img_list is not None
     assert len(img_list) == 1
     assert isinstance(img_list[0], Image.Image)
     assert img_list[0].size == (128, 128)
 
 
-def test_load_image_series_no_input():
+def test_load_image_series_no_input() -> None:
     # Arrange
     file_list = None
 
@@ -118,7 +126,7 @@ def test_load_image_series_no_input():
     assert img_list is None
 
 
-def test_is_int_not_a_number():
+def test_is_int_not_a_number() -> None:
     # Arrange
     not_a_number = "a"
 
@@ -129,7 +137,7 @@ def test_is_int_not_a_number():
     assert ret == 0
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/invalid.spider"
 
     with pytest.raises(OSError):
@@ -137,24 +145,25 @@ def test_invalid_file():
             pass
 
 
-def test_nonstack_file():
+def test_nonstack_file() -> None:
     with Image.open(TEST_FILE) as im:
         with pytest.raises(EOFError):
             im.seek(0)
 
 
-def test_nonstack_dos():
+def test_nonstack_dos() -> None:
     with Image.open(TEST_FILE) as im:
         for i, frame in enumerate(ImageSequence.Iterator(im)):
             assert i <= 1, "Non-stack DOS file test failed"
 
 
 # for issue #4093
-def test_odd_size():
+def test_odd_size() -> None:
     data = BytesIO()
     width = 100
     im = Image.new("F", (width, 64))
     im.save(data, format="SPIDER")
 
     data.seek(0)
-    assert_image_equal_tofile(im, data)
+    with Image.open(data) as im2:
+        assert_image_equal(im, im2)
diff --git a/Tests/test_file_sun.py b/Tests/test_file_sun.py
index edb320603..6cfff8730 100644
--- a/Tests/test_file_sun.py
+++ b/Tests/test_file_sun.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import os
 
 import pytest
@@ -9,7 +11,7 @@ from .helper import assert_image_equal_tofile, assert_image_similar, hopper
 EXTRA_DIR = "Tests/images/sunraster"
 
 
-def test_sanity():
+def test_sanity() -> None:
     # Arrange
     # Created with ImageMagick: convert hopper.jpg hopper.ras
     test_file = "Tests/images/hopper.ras"
@@ -26,7 +28,7 @@ def test_sanity():
         SunImagePlugin.SunImageFile(invalid_file)
 
 
-def test_im1():
+def test_im1() -> None:
     with Image.open("Tests/images/sunraster.im1") as im:
         assert_image_equal_tofile(im, "Tests/images/sunraster.im1.png")
 
@@ -34,7 +36,7 @@ def test_im1():
 @pytest.mark.skipif(
     not os.path.exists(EXTRA_DIR), reason="Extra image files not installed"
 )
-def test_others():
+def test_others() -> None:
     files = (
         os.path.join(EXTRA_DIR, f)
         for f in os.listdir(EXTRA_DIR)
diff --git a/Tests/test_file_tar.py b/Tests/test_file_tar.py
index b27fa25f3..49220a8b6 100644
--- a/Tests/test_file_tar.py
+++ b/Tests/test_file_tar.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import warnings
 
 import pytest
@@ -17,7 +19,7 @@ TEST_TAR_FILE = "Tests/images/hopper.tar"
         ("jpg", "hopper.jpg", "JPEG"),
     ),
 )
-def test_sanity(codec, test_path, format):
+def test_sanity(codec: str, test_path: str, format: str) -> None:
     if features.check(codec):
         with TarIO.TarIO(TEST_TAR_FILE, test_path) as tar:
             with Image.open(tar) as im:
@@ -28,18 +30,22 @@ def test_sanity(codec, test_path, format):
 
 
 @pytest.mark.skipif(is_pypy(), reason="Requires CPython")
-def test_unclosed_file():
+def test_unclosed_file() -> None:
     with pytest.warns(ResourceWarning):
         TarIO.TarIO(TEST_TAR_FILE, "hopper.jpg")
 
 
-def test_close():
+def test_close() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         tar = TarIO.TarIO(TEST_TAR_FILE, "hopper.jpg")
         tar.close()
 
 
-def test_contextmanager():
+def test_contextmanager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with TarIO.TarIO(TEST_TAR_FILE, "hopper.jpg"):
             pass
diff --git a/Tests/test_file_tga.py b/Tests/test_file_tga.py
index 1a5730f49..a03a6a6e1 100644
--- a/Tests/test_file_tga.py
+++ b/Tests/test_file_tga.py
@@ -1,10 +1,13 @@
+from __future__ import annotations
+
 import os
 from glob import glob
 from itertools import product
+from pathlib import Path
 
 import pytest
 
-from PIL import Image
+from PIL import Image, UnidentifiedImageError
 
 from .helper import assert_image_equal, assert_image_equal_tofile, hopper
 
@@ -19,8 +22,8 @@ _ORIGIN_TO_ORIENTATION = {"tl": 1, "bl": -1}
 
 
 @pytest.mark.parametrize("mode", _MODES)
-def test_sanity(mode, tmp_path):
-    def roundtrip(original_im):
+def test_sanity(mode: str, tmp_path: Path) -> None:
+    def roundtrip(original_im: Image.Image) -> None:
         out = str(tmp_path / "temp.tga")
 
         original_im.save(out, rle=rle)
@@ -62,17 +65,31 @@ def test_sanity(mode, tmp_path):
                     roundtrip(original_im)
 
 
-def test_palette_depth_16(tmp_path):
+def test_palette_depth_8(tmp_path: Path) -> None:
+    with pytest.raises(UnidentifiedImageError):
+        Image.open("Tests/images/p_8.tga")
+
+
+def test_palette_depth_16(tmp_path: Path) -> None:
     with Image.open("Tests/images/p_16.tga") as im:
-        assert_image_equal_tofile(im.convert("RGB"), "Tests/images/p_16.png")
+        assert im.palette.mode == "RGBA"
+        assert_image_equal_tofile(im.convert("RGBA"), "Tests/images/p_16.png")
 
         out = str(tmp_path / "temp.png")
         im.save(out)
         with Image.open(out) as reloaded:
-            assert_image_equal_tofile(reloaded.convert("RGB"), "Tests/images/p_16.png")
+            assert_image_equal_tofile(reloaded.convert("RGBA"), "Tests/images/p_16.png")
 
 
-def test_id_field():
+def test_rgba_16() -> None:
+    with Image.open("Tests/images/rgba16.tga") as im:
+        assert im.mode == "RGBA"
+
+        assert im.getpixel((0, 0)) == (172, 0, 255, 255)
+        assert im.getpixel((1, 0)) == (0, 255, 82, 0)
+
+
+def test_id_field() -> None:
     # tga file with id field
     test_file = "Tests/images/tga_id_field.tga"
 
@@ -82,7 +99,7 @@ def test_id_field():
         assert im.size == (100, 100)
 
 
-def test_id_field_rle():
+def test_id_field_rle() -> None:
     # tga file with id field
     test_file = "Tests/images/rgb32rle.tga"
 
@@ -92,7 +109,7 @@ def test_id_field_rle():
         assert im.size == (199, 199)
 
 
-def test_cross_scan_line():
+def test_cross_scan_line() -> None:
     with Image.open("Tests/images/cross_scan_line.tga") as im:
         assert_image_equal_tofile(im, "Tests/images/cross_scan_line.png")
 
@@ -101,7 +118,7 @@ def test_cross_scan_line():
             im.load()
 
 
-def test_save(tmp_path):
+def test_save(tmp_path: Path) -> None:
     test_file = "Tests/images/tga_id_field.tga"
     with Image.open(test_file) as im:
         out = str(tmp_path / "temp.tga")
@@ -118,7 +135,7 @@ def test_save(tmp_path):
         assert test_im.size == (100, 100)
 
 
-def test_small_palette(tmp_path):
+def test_small_palette(tmp_path: Path) -> None:
     im = Image.new("P", (1, 1))
     colors = [0, 0, 0]
     im.putpalette(colors)
@@ -130,7 +147,12 @@ def test_small_palette(tmp_path):
         assert reloaded.getpalette() == colors
 
 
-def test_save_wrong_mode(tmp_path):
+def test_missing_palette() -> None:
+    with Image.open("Tests/images/dilation4.lut") as im:
+        assert im.mode == "L"
+
+
+def test_save_wrong_mode(tmp_path: Path) -> None:
     im = hopper("PA")
     out = str(tmp_path / "temp.tga")
 
@@ -138,7 +160,7 @@ def test_save_wrong_mode(tmp_path):
         im.save(out)
 
 
-def test_save_mapdepth():
+def test_save_mapdepth() -> None:
     # This image has been manually hexedited from 200x32_p_bl_raw.tga
     # to include an origin
     test_file = "Tests/images/200x32_p_bl_raw_origin.tga"
@@ -146,7 +168,7 @@ def test_save_mapdepth():
         assert_image_equal_tofile(im, "Tests/images/tga/common/200x32_p.png")
 
 
-def test_save_id_section(tmp_path):
+def test_save_id_section(tmp_path: Path) -> None:
     test_file = "Tests/images/rgb32rle.tga"
     with Image.open(test_file) as im:
         out = str(tmp_path / "temp.tga")
@@ -177,7 +199,7 @@ def test_save_id_section(tmp_path):
         assert "id_section" not in test_im.info
 
 
-def test_save_orientation(tmp_path):
+def test_save_orientation(tmp_path: Path) -> None:
     test_file = "Tests/images/rgb32rle.tga"
     out = str(tmp_path / "temp.tga")
     with Image.open(test_file) as im:
@@ -188,7 +210,7 @@ def test_save_orientation(tmp_path):
         assert test_im.info["orientation"] == 1
 
 
-def test_horizontal_orientations():
+def test_horizontal_orientations() -> None:
     # These images have been manually hexedited to have the relevant orientations
     with Image.open("Tests/images/rgb32rle_top_right.tga") as im:
         assert im.load()[90, 90][:3] == (0, 0, 0)
@@ -197,7 +219,7 @@ def test_horizontal_orientations():
         assert im.load()[90, 90][:3] == (0, 255, 0)
 
 
-def test_save_rle(tmp_path):
+def test_save_rle(tmp_path: Path) -> None:
     test_file = "Tests/images/rgb32rle.tga"
     with Image.open(test_file) as im:
         assert im.info["compression"] == "tga_rle"
@@ -230,7 +252,7 @@ def test_save_rle(tmp_path):
         assert test_im.info["compression"] == "tga_rle"
 
 
-def test_save_l_transparency(tmp_path):
+def test_save_l_transparency(tmp_path: Path) -> None:
     # There are 559 transparent pixels in la.tga.
     num_transparent = 559
 
diff --git a/Tests/test_file_tiff.py b/Tests/test_file_tiff.py
index f13436ce8..6f51d4651 100644
--- a/Tests/test_file_tiff.py
+++ b/Tests/test_file_tiff.py
@@ -1,6 +1,11 @@
+from __future__ import annotations
+
 import os
 import warnings
+from collections.abc import Generator
 from io import BytesIO
+from pathlib import Path
+from types import ModuleType
 
 import pytest
 
@@ -17,6 +22,7 @@ from .helper import (
     is_win32,
 )
 
+ElementTree: ModuleType | None
 try:
     from defusedxml import ElementTree
 except ImportError:
@@ -24,7 +30,7 @@ except ImportError:
 
 
 class TestFileTiff:
-    def test_sanity(self, tmp_path):
+    def test_sanity(self, tmp_path: Path) -> None:
         filename = str(tmp_path / "temp.tif")
 
         hopper("RGB").save(filename)
@@ -56,22 +62,25 @@ class TestFileTiff:
             pass
 
     @pytest.mark.skipif(is_pypy(), reason="Requires CPython")
-    def test_unclosed_file(self):
-        def open():
+    def test_unclosed_file(self) -> None:
+        def open() -> None:
             im = Image.open("Tests/images/multipage.tiff")
             im.load()
 
         with pytest.warns(ResourceWarning):
             open()
 
-    def test_closed_file(self):
+    def test_closed_file(self) -> None:
         with warnings.catch_warnings():
+            warnings.simplefilter("error")
+
             im = Image.open("Tests/images/multipage.tiff")
             im.load()
             im.close()
 
-    def test_seek_after_close(self):
+    def test_seek_after_close(self) -> None:
         im = Image.open("Tests/images/multipage.tiff")
+        assert isinstance(im, TiffImagePlugin.TiffImageFile)
         im.close()
 
         with pytest.raises(ValueError):
@@ -79,12 +88,14 @@ class TestFileTiff:
         with pytest.raises(ValueError):
             im.seek(1)
 
-    def test_context_manager(self):
+    def test_context_manager(self) -> None:
         with warnings.catch_warnings():
+            warnings.simplefilter("error")
+
             with Image.open("Tests/images/multipage.tiff") as im:
                 im.load()
 
-    def test_mac_tiff(self):
+    def test_mac_tiff(self) -> None:
         # Read RGBa images from macOS [@PIL136]
 
         filename = "Tests/images/pil136.tiff"
@@ -96,24 +107,25 @@ class TestFileTiff:
 
             assert_image_similar_tofile(im, "Tests/images/pil136.png", 1)
 
-    def test_bigtiff(self, tmp_path):
+    def test_bigtiff(self, tmp_path: Path) -> None:
         with Image.open("Tests/images/hopper_bigtiff.tif") as im:
             assert_image_equal_tofile(im, "Tests/images/hopper.tif")
 
         with Image.open("Tests/images/hopper_bigtiff.tif") as im:
-            # multistrip support not yet implemented
-            del im.tag_v2[273]
-
             outfile = str(tmp_path / "temp.tif")
             im.save(outfile, save_all=True, append_images=[im], tiffinfo=im.tag_v2)
 
-    def test_set_legacy_api(self):
+    def test_seek_too_large(self) -> None:
+        with pytest.raises(ValueError, match="Unable to seek to frame"):
+            Image.open("Tests/images/seek_too_large.tif")
+
+    def test_set_legacy_api(self) -> None:
         ifd = TiffImagePlugin.ImageFileDirectory_v2()
         with pytest.raises(Exception) as e:
-            ifd.legacy_api = None
+            ifd.legacy_api = False
         assert str(e.value) == "Not allowing setting of legacy api"
 
-    def test_xyres_tiff(self):
+    def test_xyres_tiff(self) -> None:
         filename = "Tests/images/pil168.tif"
         with Image.open(filename) as im:
             # legacy api
@@ -126,7 +138,7 @@ class TestFileTiff:
 
             assert im.info["dpi"] == (72.0, 72.0)
 
-    def test_xyres_fallback_tiff(self):
+    def test_xyres_fallback_tiff(self) -> None:
         filename = "Tests/images/compression.tif"
         with Image.open(filename) as im:
             # v2 api
@@ -140,7 +152,7 @@ class TestFileTiff:
             # Fallback "inch".
             assert im.info["dpi"] == (100.0, 100.0)
 
-    def test_int_resolution(self):
+    def test_int_resolution(self) -> None:
         filename = "Tests/images/pil168.tif"
         with Image.open(filename) as im:
             # Try to read a file where X,Y_RESOLUTION are ints
@@ -153,14 +165,14 @@ class TestFileTiff:
         "resolution_unit, dpi",
         [(None, 72.8), (2, 72.8), (3, 184.912)],
     )
-    def test_load_float_dpi(self, resolution_unit, dpi):
+    def test_load_float_dpi(self, resolution_unit: int | None, dpi: float) -> None:
         with Image.open(
             "Tests/images/hopper_float_dpi_" + str(resolution_unit) + ".tif"
         ) as im:
             assert im.tag_v2.get(RESOLUTION_UNIT) == resolution_unit
             assert im.info["dpi"] == (dpi, dpi)
 
-    def test_save_float_dpi(self, tmp_path):
+    def test_save_float_dpi(self, tmp_path: Path) -> None:
         outfile = str(tmp_path / "temp.tif")
         with Image.open("Tests/images/hopper.tif") as im:
             dpi = (72.2, 72.2)
@@ -169,7 +181,7 @@ class TestFileTiff:
             with Image.open(outfile) as reloaded:
                 assert reloaded.info["dpi"] == dpi
 
-    def test_save_setting_missing_resolution(self):
+    def test_save_setting_missing_resolution(self) -> None:
         b = BytesIO()
         with Image.open("Tests/images/10ct_32bit_128.tiff") as im:
             im.save(b, format="tiff", resolution=123.45)
@@ -177,7 +189,7 @@ class TestFileTiff:
             assert im.tag_v2[X_RESOLUTION] == 123.45
             assert im.tag_v2[Y_RESOLUTION] == 123.45
 
-    def test_invalid_file(self):
+    def test_invalid_file(self) -> None:
         invalid_file = "Tests/images/flower.jpg"
 
         with pytest.raises(SyntaxError):
@@ -188,30 +200,30 @@ class TestFileTiff:
             TiffImagePlugin.TiffImageFile(invalid_file)
         TiffImagePlugin.PREFIXES.pop()
 
-    def test_bad_exif(self):
+    def test_bad_exif(self) -> None:
         with Image.open("Tests/images/hopper_bad_exif.jpg") as i:
             # Should not raise struct.error.
             with pytest.warns(UserWarning):
                 i._getexif()
 
-    def test_save_rgba(self, tmp_path):
+    def test_save_rgba(self, tmp_path: Path) -> None:
         im = hopper("RGBA")
         outfile = str(tmp_path / "temp.tif")
         im.save(outfile)
 
-    def test_save_unsupported_mode(self, tmp_path):
+    def test_save_unsupported_mode(self, tmp_path: Path) -> None:
         im = hopper("HSV")
         outfile = str(tmp_path / "temp.tif")
         with pytest.raises(OSError):
             im.save(outfile)
 
-    def test_8bit_s(self):
+    def test_8bit_s(self) -> None:
         with Image.open("Tests/images/8bit.s.tif") as im:
             im.load()
             assert im.mode == "L"
             assert im.getpixel((50, 50)) == 184
 
-    def test_little_endian(self):
+    def test_little_endian(self) -> None:
         with Image.open("Tests/images/16bit.cropped.tif") as im:
             assert im.getpixel((0, 0)) == 480
             assert im.mode == "I;16"
@@ -221,7 +233,7 @@ class TestFileTiff:
         assert b[0] == ord(b"\xe0")
         assert b[1] == ord(b"\x01")
 
-    def test_big_endian(self):
+    def test_big_endian(self) -> None:
         with Image.open("Tests/images/16bit.MM.cropped.tif") as im:
             assert im.getpixel((0, 0)) == 480
             assert im.mode == "I;16B"
@@ -231,7 +243,7 @@ class TestFileTiff:
         assert b[0] == ord(b"\x01")
         assert b[1] == ord(b"\xe0")
 
-    def test_16bit_r(self):
+    def test_16bit_r(self) -> None:
         with Image.open("Tests/images/16bit.r.tif") as im:
             assert im.getpixel((0, 0)) == 480
             assert im.mode == "I;16"
@@ -240,14 +252,14 @@ class TestFileTiff:
         assert b[0] == ord(b"\xe0")
         assert b[1] == ord(b"\x01")
 
-    def test_16bit_s(self):
+    def test_16bit_s(self) -> None:
         with Image.open("Tests/images/16bit.s.tif") as im:
             im.load()
             assert im.mode == "I"
             assert im.getpixel((0, 0)) == 32767
             assert im.getpixel((0, 1)) == 0
 
-    def test_12bit_rawmode(self):
+    def test_12bit_rawmode(self) -> None:
         """Are we generating the same interpretation
         of the image as Imagemagick is?"""
 
@@ -260,7 +272,7 @@ class TestFileTiff:
 
             assert_image_equal_tofile(im, "Tests/images/12in16bit.tif")
 
-    def test_32bit_float(self):
+    def test_32bit_float(self) -> None:
         # Issue 614, specific 32-bit float format
         path = "Tests/images/10ct_32bit_128.tiff"
         with Image.open(path) as im:
@@ -269,7 +281,7 @@ class TestFileTiff:
             assert im.getpixel((0, 0)) == -0.4526388943195343
             assert im.getextrema() == (-3.140936851501465, 3.140684127807617)
 
-    def test_unknown_pixel_mode(self):
+    def test_unknown_pixel_mode(self) -> None:
         with pytest.raises(OSError):
             with Image.open("Tests/images/hopper_unknown_pixel_mode.tif"):
                 pass
@@ -281,12 +293,12 @@ class TestFileTiff:
             ("Tests/images/multipage.tiff", 3),
         ),
     )
-    def test_n_frames(self, path, n_frames):
+    def test_n_frames(self, path: str, n_frames: int) -> None:
         with Image.open(path) as im:
             assert im.n_frames == n_frames
             assert im.is_animated == (n_frames != 1)
 
-    def test_eoferror(self):
+    def test_eoferror(self) -> None:
         with Image.open("Tests/images/multipage-lastframe.tif") as im:
             n_frames = im.n_frames
 
@@ -298,7 +310,7 @@ class TestFileTiff:
             # Test that seeking to the last frame does not raise an error
             im.seek(n_frames - 1)
 
-    def test_multipage(self):
+    def test_multipage(self) -> None:
         # issue #862
         with Image.open("Tests/images/multipage.tiff") as im:
             # file is a multipage tiff: 10x10 green, 10x10 red, 20x20 blue
@@ -322,13 +334,13 @@ class TestFileTiff:
             assert im.size == (20, 20)
             assert im.convert("RGB").getpixel((0, 0)) == (0, 0, 255)
 
-    def test_multipage_last_frame(self):
+    def test_multipage_last_frame(self) -> None:
         with Image.open("Tests/images/multipage-lastframe.tif") as im:
             im.load()
             assert im.size == (20, 20)
             assert im.convert("RGB").getpixel((0, 0)) == (0, 0, 255)
 
-    def test_frame_order(self):
+    def test_frame_order(self) -> None:
         # A frame can't progress to itself after reading
         with Image.open("Tests/images/multipage_single_frame_loop.tiff") as im:
             assert im.n_frames == 1
@@ -341,7 +353,7 @@ class TestFileTiff:
         with Image.open("Tests/images/multipage_out_of_order.tiff") as im:
             assert im.n_frames == 3
 
-    def test___str__(self):
+    def test___str__(self) -> None:
         filename = "Tests/images/pil136.tiff"
         with Image.open(filename) as im:
             # Act
@@ -350,7 +362,7 @@ class TestFileTiff:
             # Assert
             assert isinstance(ret, str)
 
-    def test_dict(self):
+    def test_dict(self) -> None:
         # Arrange
         filename = "Tests/images/pil136.tiff"
         with Image.open(filename) as im:
@@ -390,7 +402,7 @@ class TestFileTiff:
             }
             assert dict(im.tag) == legacy_tags
 
-    def test__delitem__(self):
+    def test__delitem__(self) -> None:
         filename = "Tests/images/pil136.tiff"
         with Image.open(filename) as im:
             len_before = len(dict(im.ifd))
@@ -399,36 +411,36 @@ class TestFileTiff:
             assert len_before == len_after + 1
 
     @pytest.mark.parametrize("legacy_api", (False, True))
-    def test_load_byte(self, legacy_api):
+    def test_load_byte(self, legacy_api: bool) -> None:
         ifd = TiffImagePlugin.ImageFileDirectory_v2()
         data = b"abc"
         ret = ifd.load_byte(data, legacy_api)
         assert ret == b"abc"
 
-    def test_load_string(self):
+    def test_load_string(self) -> None:
         ifd = TiffImagePlugin.ImageFileDirectory_v2()
         data = b"abc\0"
         ret = ifd.load_string(data, False)
         assert ret == "abc"
 
-    def test_load_float(self):
+    def test_load_float(self) -> None:
         ifd = TiffImagePlugin.ImageFileDirectory_v2()
         data = b"abcdabcd"
-        ret = ifd.load_float(data, False)
+        ret = getattr(ifd, "load_float")(data, False)
         assert ret == (1.6777999408082104e22, 1.6777999408082104e22)
 
-    def test_load_double(self):
+    def test_load_double(self) -> None:
         ifd = TiffImagePlugin.ImageFileDirectory_v2()
         data = b"abcdefghabcdefgh"
-        ret = ifd.load_double(data, False)
+        ret = getattr(ifd, "load_double")(data, False)
         assert ret == (8.540883223036124e194, 8.540883223036124e194)
 
-    def test_ifd_tag_type(self):
+    def test_ifd_tag_type(self) -> None:
         with Image.open("Tests/images/ifd_tag_type.tiff") as im:
             assert 0x8825 in im.tag_v2
 
-    def test_exif(self, tmp_path):
-        def check_exif(exif):
+    def test_exif(self, tmp_path: Path) -> None:
+        def check_exif(exif: Image.Exif) -> None:
             assert sorted(exif.keys()) == [
                 256,
                 257,
@@ -479,19 +491,19 @@ class TestFileTiff:
             exif = im.getexif()
             check_exif(exif)
 
-    def test_modify_exif(self, tmp_path):
+    def test_modify_exif(self, tmp_path: Path) -> None:
         outfile = str(tmp_path / "temp.tif")
         with Image.open("Tests/images/ifd_tag_type.tiff") as im:
             exif = im.getexif()
-            exif[256] = 100
+            exif[264] = 100
 
             im.save(outfile, exif=exif)
 
         with Image.open(outfile) as im:
             exif = im.getexif()
-            assert exif[256] == 100
+            assert exif[264] == 100
 
-    def test_reload_exif_after_seek(self):
+    def test_reload_exif_after_seek(self) -> None:
         with Image.open("Tests/images/multipage.tiff") as im:
             exif = im.getexif()
             del exif[256]
@@ -499,7 +511,7 @@ class TestFileTiff:
 
             assert 256 in exif
 
-    def test_exif_frames(self):
+    def test_exif_frames(self) -> None:
         # Test that EXIF data can change across frames
         with Image.open("Tests/images/g4-multi.tiff") as im:
             assert im.getexif()[273] == (328, 815)
@@ -508,7 +520,7 @@ class TestFileTiff:
             assert im.getexif()[273] == (1408, 1907)
 
     @pytest.mark.parametrize("mode", ("1", "L"))
-    def test_photometric(self, mode, tmp_path):
+    def test_photometric(self, mode: str, tmp_path: Path) -> None:
         filename = str(tmp_path / "temp.tif")
         im = hopper(mode)
         im.save(filename, tiffinfo={262: 0})
@@ -516,13 +528,13 @@ class TestFileTiff:
             assert reloaded.tag_v2[262] == 0
             assert_image_equal(im, reloaded)
 
-    def test_seek(self):
+    def test_seek(self) -> None:
         filename = "Tests/images/pil136.tiff"
         with Image.open(filename) as im:
             im.seek(0)
             assert im.tell() == 0
 
-    def test_seek_eof(self):
+    def test_seek_eof(self) -> None:
         filename = "Tests/images/pil136.tiff"
         with Image.open(filename) as im:
             assert im.tell() == 0
@@ -531,21 +543,21 @@ class TestFileTiff:
             with pytest.raises(EOFError):
                 im.seek(1)
 
-    def test__limit_rational_int(self):
+    def test__limit_rational_int(self) -> None:
         from PIL.TiffImagePlugin import _limit_rational
 
         value = 34
         ret = _limit_rational(value, 65536)
         assert ret == (34, 1)
 
-    def test__limit_rational_float(self):
+    def test__limit_rational_float(self) -> None:
         from PIL.TiffImagePlugin import _limit_rational
 
         value = 22.3
         ret = _limit_rational(value, 65536)
         assert ret == (223, 10)
 
-    def test_4bit(self):
+    def test_4bit(self) -> None:
         test_file = "Tests/images/hopper_gray_4bpp.tif"
         original = hopper("L")
         with Image.open(test_file) as im:
@@ -553,7 +565,7 @@ class TestFileTiff:
             assert im.mode == "L"
             assert_image_similar(im, original, 7.3)
 
-    def test_gray_semibyte_per_pixel(self):
+    def test_gray_semibyte_per_pixel(self) -> None:
         test_files = (
             (
                 24.8,  # epsilon
@@ -586,10 +598,10 @@ class TestFileTiff:
                         assert im2.mode == "L"
                         assert_image_equal(im, im2)
 
-    def test_with_underscores(self, tmp_path):
+    def test_with_underscores(self, tmp_path: Path) -> None:
         kwargs = {"resolution_unit": "inch", "x_resolution": 72, "y_resolution": 36}
         filename = str(tmp_path / "temp.tif")
-        hopper("RGB").save(filename, **kwargs)
+        hopper("RGB").save(filename, "TIFF", **kwargs)
         with Image.open(filename) as im:
             # legacy interface
             assert im.tag[X_RESOLUTION][0][0] == 72
@@ -599,7 +611,7 @@ class TestFileTiff:
             assert im.tag_v2[X_RESOLUTION] == 72
             assert im.tag_v2[Y_RESOLUTION] == 36
 
-    def test_roundtrip_tiff_uint16(self, tmp_path):
+    def test_roundtrip_tiff_uint16(self, tmp_path: Path) -> None:
         # Test an image of all '0' values
         pixel_value = 0x1234
         infile = "Tests/images/uint16_1_4660.tif"
@@ -611,25 +623,50 @@ class TestFileTiff:
 
             assert_image_equal_tofile(im, tmpfile)
 
-    def test_strip_raw(self):
+    def test_iptc(self, tmp_path: Path) -> None:
+        # Do not preserve IPTC_NAA_CHUNK by default if type is LONG
+        outfile = str(tmp_path / "temp.tif")
+        with Image.open("Tests/images/hopper.tif") as im:
+            im.load()
+            assert isinstance(im, TiffImagePlugin.TiffImageFile)
+            ifd = TiffImagePlugin.ImageFileDirectory_v2()
+            ifd[33723] = 1
+            ifd.tagtype[33723] = 4
+            im.tag_v2 = ifd
+            im.save(outfile)
+
+        with Image.open(outfile) as im:
+            assert isinstance(im, TiffImagePlugin.TiffImageFile)
+            assert 33723 not in im.tag_v2
+
+    def test_rowsperstrip(self, tmp_path: Path) -> None:
+        outfile = str(tmp_path / "temp.tif")
+        im = hopper()
+        im.save(outfile, tiffinfo={278: 256})
+
+        with Image.open(outfile) as im:
+            assert isinstance(im, TiffImagePlugin.TiffImageFile)
+            assert im.tag_v2[278] == 256
+
+    def test_strip_raw(self) -> None:
         infile = "Tests/images/tiff_strip_raw.tif"
         with Image.open(infile) as im:
             assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")
 
-    def test_strip_planar_raw(self):
+    def test_strip_planar_raw(self) -> None:
         # gdal_translate -of GTiff -co INTERLEAVE=BAND \
         # tiff_strip_raw.tif tiff_strip_planar_raw.tiff
         infile = "Tests/images/tiff_strip_planar_raw.tif"
         with Image.open(infile) as im:
             assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")
 
-    def test_strip_planar_raw_with_overviews(self):
+    def test_strip_planar_raw_with_overviews(self) -> None:
         # gdaladdo tiff_strip_planar_raw2.tif 2 4 8 16
         infile = "Tests/images/tiff_strip_planar_raw_with_overviews.tif"
         with Image.open(infile) as im:
             assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")
 
-    def test_tiled_planar_raw(self):
+    def test_tiled_planar_raw(self) -> None:
         # gdal_translate -of GTiff -co TILED=YES -co BLOCKXSIZE=32 \
         # -co BLOCKYSIZE=32 -co INTERLEAVE=BAND \
         # tiff_tiled_raw.tif tiff_tiled_planar_raw.tiff
@@ -637,7 +674,7 @@ class TestFileTiff:
         with Image.open(infile) as im:
             assert_image_equal_tofile(im, "Tests/images/tiff_adobe_deflate.png")
 
-    def test_planar_configuration_save(self, tmp_path):
+    def test_planar_configuration_save(self, tmp_path: Path) -> None:
         infile = "Tests/images/tiff_tiled_planar_raw.tif"
         with Image.open(infile) as im:
             assert im._planar_configuration == 2
@@ -648,8 +685,15 @@ class TestFileTiff:
             with Image.open(outfile) as reloaded:
                 assert_image_equal_tofile(reloaded, infile)
 
+    def test_invalid_tiled_dimensions(self) -> None:
+        with open("Tests/images/tiff_tiled_planar_raw.tif", "rb") as fp:
+            data = fp.read()
+        b = BytesIO(data[:144] + b"\x02" + data[145:])
+        with pytest.raises(ValueError):
+            Image.open(b)
+
     @pytest.mark.parametrize("mode", ("P", "PA"))
-    def test_palette(self, mode, tmp_path):
+    def test_palette(self, mode: str, tmp_path: Path) -> None:
         outfile = str(tmp_path / "temp.tif")
 
         im = hopper(mode)
@@ -658,7 +702,7 @@ class TestFileTiff:
         with Image.open(outfile) as reloaded:
             assert_image_equal(im.convert("RGB"), reloaded.convert("RGB"))
 
-    def test_tiff_save_all(self):
+    def test_tiff_save_all(self) -> None:
         mp = BytesIO()
         with Image.open("Tests/images/multipage.tiff") as im:
             im.save(mp, format="tiff", save_all=True)
@@ -678,7 +722,7 @@ class TestFileTiff:
             assert reread.n_frames == 3
 
         # Test appending using a generator
-        def im_generator(ims):
+        def im_generator(ims: list[Image.Image]) -> Generator[Image.Image, None, None]:
             yield from ims
 
         mp = BytesIO()
@@ -688,7 +732,21 @@ class TestFileTiff:
         with Image.open(mp) as reread:
             assert reread.n_frames == 3
 
-    def test_saving_icc_profile(self, tmp_path):
+    def test_fixoffsets(self) -> None:
+        b = BytesIO(b"II\x2a\x00\x00\x00\x00\x00")
+        with TiffImagePlugin.AppendingTiffWriter(b) as a:
+            b.seek(0)
+            a.fixOffsets(1, isShort=True)
+
+            b.seek(0)
+            a.fixOffsets(1, isLong=True)
+
+            # Neither short nor long
+            b.seek(0)
+            with pytest.raises(RuntimeError):
+                a.fixOffsets(1)
+
+    def test_saving_icc_profile(self, tmp_path: Path) -> None:
         # Tests saving TIFF with icc_profile set.
         # At the time of writing this will only work for non-compressed tiffs
         # as libtiff does not support embedded ICC profiles,
@@ -702,7 +760,7 @@ class TestFileTiff:
         with Image.open(tmpfile) as reloaded:
             assert b"Dummy value" == reloaded.info["icc_profile"]
 
-    def test_save_icc_profile(self, tmp_path):
+    def test_save_icc_profile(self, tmp_path: Path) -> None:
         im = hopper()
         assert "icc_profile" not in im.info
 
@@ -713,14 +771,14 @@ class TestFileTiff:
         with Image.open(outfile) as reloaded:
             assert reloaded.info["icc_profile"] == icc_profile
 
-    def test_save_bmp_compression(self, tmp_path):
+    def test_save_bmp_compression(self, tmp_path: Path) -> None:
         with Image.open("Tests/images/hopper.bmp") as im:
             assert im.info["compression"] == 0
 
             outfile = str(tmp_path / "temp.tif")
             im.save(outfile)
 
-    def test_discard_icc_profile(self, tmp_path):
+    def test_discard_icc_profile(self, tmp_path: Path) -> None:
         outfile = str(tmp_path / "temp.tif")
 
         with Image.open("Tests/images/icc_profile.png") as im:
@@ -731,19 +789,23 @@ class TestFileTiff:
         with Image.open(outfile) as reloaded:
             assert "icc_profile" not in reloaded.info
 
-    def test_getxmp(self):
+    def test_getxmp(self) -> None:
         with Image.open("Tests/images/lab.tif") as im:
             if ElementTree is None:
-                with pytest.warns(UserWarning):
+                with pytest.warns(
+                    UserWarning,
+                    match="XMP data cannot be read without defusedxml dependency",
+                ):
                     assert im.getxmp() == {}
             else:
+                assert "xmp" in im.info
                 xmp = im.getxmp()
 
                 description = xmp["xmpmeta"]["RDF"]["Description"]
                 assert description[0]["format"] == "image/tiff"
                 assert description[3]["BitsPerSample"]["Seq"]["li"] == ["8", "8", "8"]
 
-    def test_get_photoshop_blocks(self):
+    def test_get_photoshop_blocks(self) -> None:
         with Image.open("Tests/images/lab.tif") as im:
             assert list(im.get_photoshop_blocks().keys()) == [
                 1061,
@@ -769,7 +831,28 @@ class TestFileTiff:
                 4001,
             ]
 
-    def test_close_on_load_exclusive(self, tmp_path):
+    def test_tiff_chunks(self, tmp_path: Path) -> None:
+        tmpfile = str(tmp_path / "temp.tif")
+
+        im = hopper()
+        with open(tmpfile, "wb") as fp:
+            for y in range(0, 128, 32):
+                chunk = im.crop((0, y, 128, y + 32))
+                if y == 0:
+                    chunk.save(
+                        fp,
+                        "TIFF",
+                        tiffinfo={
+                            TiffImagePlugin.IMAGEWIDTH: 128,
+                            TiffImagePlugin.IMAGELENGTH: 128,
+                        },
+                    )
+                else:
+                    fp.write(chunk.tobytes())
+
+        assert_image_equal_tofile(im, tmpfile)
+
+    def test_close_on_load_exclusive(self, tmp_path: Path) -> None:
         # similar to test_fd_leak, but runs on unixlike os
         tmpfile = str(tmp_path / "temp.tif")
 
@@ -782,7 +865,7 @@ class TestFileTiff:
         im.load()
         assert fp.closed
 
-    def test_close_on_load_nonexclusive(self, tmp_path):
+    def test_close_on_load_nonexclusive(self, tmp_path: Path) -> None:
         tmpfile = str(tmp_path / "temp.tif")
 
         with Image.open("Tests/images/uint16_1_4660.tif") as im:
@@ -804,7 +887,7 @@ class TestFileTiff:
         not os.path.exists("Tests/images/string_dimension.tiff"),
         reason="Extra image files not installed",
     )
-    def test_string_dimension(self):
+    def test_string_dimension(self) -> None:
         # Assert that an error is raised if one of the dimensions is a string
         with Image.open("Tests/images/string_dimension.tiff") as im:
             with pytest.raises(OSError):
@@ -812,7 +895,7 @@ class TestFileTiff:
 
     @pytest.mark.timeout(6)
     @pytest.mark.filterwarnings("ignore:Truncated File Read")
-    def test_timeout(self):
+    def test_timeout(self) -> None:
         with Image.open("Tests/images/timeout-6646305047838720") as im:
             ImageFile.LOAD_TRUNCATED_IMAGES = True
             im.load()
@@ -825,7 +908,7 @@ class TestFileTiff:
         ],
     )
     @pytest.mark.timeout(2)
-    def test_oom(self, test_file):
+    def test_oom(self, test_file: str) -> None:
         with pytest.raises(UnidentifiedImageError):
             with pytest.warns(UserWarning):
                 with Image.open(test_file):
@@ -834,7 +917,7 @@ class TestFileTiff:
 
 @pytest.mark.skipif(not is_win32(), reason="Windows only")
 class TestFileTiffW32:
-    def test_fd_leak(self, tmp_path):
+    def test_fd_leak(self, tmp_path: Path) -> None:
         tmpfile = str(tmp_path / "temp.tif")
 
         # this is an mmaped file.
diff --git a/Tests/test_file_tiff_metadata.py b/Tests/test_file_tiff_metadata.py
index b7d100e7a..36aabf4f8 100644
--- a/Tests/test_file_tiff_metadata.py
+++ b/Tests/test_file_tiff_metadata.py
@@ -1,5 +1,8 @@
+from __future__ import annotations
+
 import io
 import struct
+from pathlib import Path
 
 import pytest
 
@@ -8,10 +11,14 @@ from PIL.TiffImagePlugin import IFDRational
 
 from .helper import assert_deep_equal, hopper
 
-TAG_IDS = {info.name: info.value for info in TiffTags.TAGS_V2.values()}
+TAG_IDS: dict[str, int] = {
+    info.name: info.value
+    for info in TiffTags.TAGS_V2.values()
+    if info.value is not None
+}
 
 
-def test_rt_metadata(tmp_path):
+def test_rt_metadata(tmp_path: Path) -> None:
     """Test writing arbitrary metadata into the tiff image directory
     Use case is ImageJ private tags, one numeric, one arbitrary
     data.  https://github.com/python-pillow/Pillow/issues/291
@@ -77,7 +84,7 @@ def test_rt_metadata(tmp_path):
         assert loaded.tag_v2[ImageJMetaDataByteCounts] == (8, len(bin_data) - 8)
 
 
-def test_read_metadata():
+def test_read_metadata() -> None:
     with Image.open("Tests/images/hopper_g4.tif") as img:
         assert {
             "YResolution": IFDRational(4294967295, 113653537),
@@ -118,10 +125,11 @@ def test_read_metadata():
         } == img.tag.named()
 
 
-def test_write_metadata(tmp_path):
+def test_write_metadata(tmp_path: Path) -> None:
     """Test metadata writing through the python code"""
     with Image.open("Tests/images/hopper.tif") as img:
         f = str(tmp_path / "temp.tiff")
+        del img.tag[278]
         img.save(f, tiffinfo=img.tag)
 
         original = img.tag_v2.named()
@@ -154,13 +162,15 @@ def test_write_metadata(tmp_path):
             assert value == reloaded[tag], f"{tag} didn't roundtrip"
 
 
-def test_change_stripbytecounts_tag_type(tmp_path):
+def test_change_stripbytecounts_tag_type(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.tiff")
     with Image.open("Tests/images/hopper.tif") as im:
         info = im.tag_v2
+        del info[278]
 
         # Resize the image so that STRIPBYTECOUNTS will be larger than a SHORT
         im = im.resize((500, 500))
+        info[TiffImagePlugin.IMAGEWIDTH] = im.width
 
         # STRIPBYTECOUNTS can be a SHORT or a LONG
         info.tagtype[TiffImagePlugin.STRIPBYTECOUNTS] = TiffTags.SHORT
@@ -171,19 +181,44 @@ def test_change_stripbytecounts_tag_type(tmp_path):
         assert reloaded.tag_v2.tagtype[TiffImagePlugin.STRIPBYTECOUNTS] == TiffTags.LONG
 
 
-def test_no_duplicate_50741_tag():
+def test_save_multiple_stripoffsets() -> None:
+    ifd = TiffImagePlugin.ImageFileDirectory_v2()
+    ifd[TiffImagePlugin.STRIPOFFSETS] = (123, 456)
+    assert ifd.tagtype[TiffImagePlugin.STRIPOFFSETS] == TiffTags.LONG
+
+    # all values are in little-endian
+    assert ifd.tobytes() == (
+        # number of tags == 1
+        b"\x01\x00"
+        # tag id (2 bytes), type (2 bytes), count (4 bytes), value (4 bytes)
+        # TiffImagePlugin.STRIPOFFSETS, TiffTags.LONG, 2, 18
+        # where STRIPOFFSETS is 273, LONG is 4
+        # and 18 is the offset of the tag data
+        b"\x11\x01\x04\x00\x02\x00\x00\x00\x12\x00\x00\x00"
+        # end of entries
+        b"\x00\x00\x00\x00"
+        # 26 is the total number of bytes output,
+        # the offset for any auxiliary strip data that will then be appended
+        # (123 + 26, 456 + 26) == (149, 482)
+        b"\x95\x00\x00\x00\xe2\x01\x00\x00"
+    )
+
+
+def test_no_duplicate_50741_tag() -> None:
     assert TAG_IDS["MakerNoteSafety"] == 50741
     assert TAG_IDS["BestQualityScale"] == 50780
 
 
-def test_iptc(tmp_path):
+def test_iptc(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.tiff")
     with Image.open("Tests/images/hopper.Lab.tif") as im:
         im.save(out)
 
 
 @pytest.mark.parametrize("value, expected", ((b"test", "test"), (1, "1")))
-def test_writing_other_types_to_ascii(value, expected, tmp_path):
+def test_writing_other_types_to_ascii(
+    value: bytes | int, expected: str, tmp_path: Path
+) -> None:
     info = TiffImagePlugin.ImageFileDirectory_v2()
 
     tag = TiffTags.TAGS_V2[271]
@@ -200,7 +235,7 @@ def test_writing_other_types_to_ascii(value, expected, tmp_path):
 
 
 @pytest.mark.parametrize("value", (1, IFDRational(1)))
-def test_writing_other_types_to_bytes(value, tmp_path):
+def test_writing_other_types_to_bytes(value: int | IFDRational, tmp_path: Path) -> None:
     im = hopper()
     info = TiffImagePlugin.ImageFileDirectory_v2()
 
@@ -216,14 +251,17 @@ def test_writing_other_types_to_bytes(value, tmp_path):
         assert reloaded.tag_v2[700] == b"\x01"
 
 
-def test_writing_other_types_to_undefined(tmp_path):
+@pytest.mark.parametrize("value", (1, IFDRational(1)))
+def test_writing_other_types_to_undefined(
+    value: int | IFDRational, tmp_path: Path
+) -> None:
     im = hopper()
     info = TiffImagePlugin.ImageFileDirectory_v2()
 
     tag = TiffTags.TAGS_V2[33723]
     assert tag.type == TiffTags.UNDEFINED
 
-    info[33723] = 1
+    info[33723] = value
 
     out = str(tmp_path / "temp.tiff")
     im.save(out, tiffinfo=info)
@@ -232,7 +270,7 @@ def test_writing_other_types_to_undefined(tmp_path):
         assert reloaded.tag_v2[33723] == b"1"
 
 
-def test_undefined_zero(tmp_path):
+def test_undefined_zero(tmp_path: Path) -> None:
     # Check that the tag has not been changed since this test was created
     tag = TiffTags.TAGS_V2[45059]
     assert tag.type == TiffTags.UNDEFINED
@@ -247,7 +285,7 @@ def test_undefined_zero(tmp_path):
     assert info[45059] == original
 
 
-def test_empty_metadata():
+def test_empty_metadata() -> None:
     f = io.BytesIO(b"II*\x00\x08\x00\x00\x00")
     head = f.read(8)
     info = TiffImagePlugin.ImageFileDirectory(head)
@@ -256,7 +294,7 @@ def test_empty_metadata():
         info.load(f)
 
 
-def test_iccprofile(tmp_path):
+def test_iccprofile(tmp_path: Path) -> None:
     # https://github.com/python-pillow/Pillow/issues/1462
     out = str(tmp_path / "temp.tiff")
     with Image.open("Tests/images/hopper.iccprofile.tif") as im:
@@ -267,7 +305,7 @@ def test_iccprofile(tmp_path):
         assert im.info["icc_profile"] == reloaded.info["icc_profile"]
 
 
-def test_iccprofile_binary():
+def test_iccprofile_binary() -> None:
     # https://github.com/python-pillow/Pillow/issues/1526
     # We should be able to load this,
     # but probably won't be able to save it.
@@ -277,19 +315,19 @@ def test_iccprofile_binary():
         assert im.info["icc_profile"]
 
 
-def test_iccprofile_save_png(tmp_path):
+def test_iccprofile_save_png(tmp_path: Path) -> None:
     with Image.open("Tests/images/hopper.iccprofile.tif") as im:
         outfile = str(tmp_path / "temp.png")
         im.save(outfile)
 
 
-def test_iccprofile_binary_save_png(tmp_path):
+def test_iccprofile_binary_save_png(tmp_path: Path) -> None:
     with Image.open("Tests/images/hopper.iccprofile_binary.tif") as im:
         outfile = str(tmp_path / "temp.png")
         im.save(outfile)
 
 
-def test_exif_div_zero(tmp_path):
+def test_exif_div_zero(tmp_path: Path) -> None:
     im = hopper()
     info = TiffImagePlugin.ImageFileDirectory_v2()
     info[41988] = TiffImagePlugin.IFDRational(0, 0)
@@ -302,7 +340,7 @@ def test_exif_div_zero(tmp_path):
         assert 0 == reloaded.tag_v2[41988].denominator
 
 
-def test_ifd_unsigned_rational(tmp_path):
+def test_ifd_unsigned_rational(tmp_path: Path) -> None:
     im = hopper()
     info = TiffImagePlugin.ImageFileDirectory_v2()
 
@@ -333,7 +371,7 @@ def test_ifd_unsigned_rational(tmp_path):
         assert 1 == reloaded.tag_v2[41493].denominator
 
 
-def test_ifd_signed_rational(tmp_path):
+def test_ifd_signed_rational(tmp_path: Path) -> None:
     im = hopper()
     info = TiffImagePlugin.ImageFileDirectory_v2()
 
@@ -376,7 +414,7 @@ def test_ifd_signed_rational(tmp_path):
         assert -1 == reloaded.tag_v2[37380].denominator
 
 
-def test_ifd_signed_long(tmp_path):
+def test_ifd_signed_long(tmp_path: Path) -> None:
     im = hopper()
     info = TiffImagePlugin.ImageFileDirectory_v2()
 
@@ -389,7 +427,7 @@ def test_ifd_signed_long(tmp_path):
         assert reloaded.tag_v2[37000] == -60000
 
 
-def test_empty_values():
+def test_empty_values() -> None:
     data = io.BytesIO(
         b"II*\x00\x08\x00\x00\x00\x03\x00\x1a\x01\x05\x00\x00\x00\x00\x00"
         b"\x00\x00\x00\x00\x1b\x01\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00"
@@ -400,11 +438,11 @@ def test_empty_values():
     info = TiffImagePlugin.ImageFileDirectory_v2(head)
     info.load(data)
     # Should not raise ValueError.
-    info = dict(info)
-    assert 33432 in info
+    info_dict = dict(info)
+    assert 33432 in info_dict
 
 
-def test_photoshop_info(tmp_path):
+def test_photoshop_info(tmp_path: Path) -> None:
     with Image.open("Tests/images/issue_2278.tif") as im:
         assert len(im.tag_v2[34377]) == 70
         assert isinstance(im.tag_v2[34377], bytes)
@@ -415,7 +453,7 @@ def test_photoshop_info(tmp_path):
         assert isinstance(reloaded.tag_v2[34377], bytes)
 
 
-def test_too_many_entries():
+def test_too_many_entries() -> None:
     ifd = TiffImagePlugin.ImageFileDirectory_v2()
 
     #    277: ("SamplesPerPixel", SHORT, 1),
@@ -427,7 +465,7 @@ def test_too_many_entries():
         assert ifd[277] == 4
 
 
-def test_tag_group_data():
+def test_tag_group_data() -> None:
     base_ifd = TiffImagePlugin.ImageFileDirectory_v2()
     interop_ifd = TiffImagePlugin.ImageFileDirectory_v2(group=40965)
     for ifd in (base_ifd, interop_ifd):
@@ -441,7 +479,7 @@ def test_tag_group_data():
     assert base_ifd.tagtype[2] != interop_ifd.tagtype[256]
 
 
-def test_empty_subifd(tmp_path):
+def test_empty_subifd(tmp_path: Path) -> None:
     out = str(tmp_path / "temp.jpg")
 
     im = hopper()
diff --git a/Tests/test_file_wal.py b/Tests/test_file_wal.py
index 4be46e9d6..b34975e83 100644
--- a/Tests/test_file_wal.py
+++ b/Tests/test_file_wal.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from PIL import WalImageFile
 
 from .helper import assert_image_equal_tofile
@@ -5,7 +7,7 @@ from .helper import assert_image_equal_tofile
 TEST_FILE = "Tests/images/hopper.wal"
 
 
-def test_open():
+def test_open() -> None:
     with WalImageFile.open(TEST_FILE) as im:
         assert im.format == "WAL"
         assert im.format_description == "Quake2 Texture"
@@ -17,7 +19,7 @@ def test_open():
         assert_image_equal_tofile(im, "Tests/images/hopper_wal.png")
 
 
-def test_load():
+def test_load() -> None:
     with WalImageFile.open(TEST_FILE) as im:
         assert im.load()[0, 0] == 122
 
diff --git a/Tests/test_file_webp.py b/Tests/test_file_webp.py
index 01b11447a..ad5aa9ed6 100644
--- a/Tests/test_file_webp.py
+++ b/Tests/test_file_webp.py
@@ -1,6 +1,11 @@
+from __future__ import annotations
+
 import io
 import re
+import sys
 import warnings
+from pathlib import Path
+from typing import Any
 
 import pytest
 
@@ -23,7 +28,7 @@ except ImportError:
 
 
 class TestUnsupportedWebp:
-    def test_unsupported(self):
+    def test_unsupported(self) -> None:
         if HAVE_WEBP:
             WebPImagePlugin.SUPPORTED = False
 
@@ -39,15 +44,15 @@ class TestUnsupportedWebp:
 
 @skip_unless_feature("webp")
 class TestFileWebp:
-    def setup_method(self):
+    def setup_method(self) -> None:
         self.rgb_mode = "RGB"
 
-    def test_version(self):
-        _webp.WebPDecoderVersion()
-        _webp.WebPDecoderBuggyAlpha()
-        assert re.search(r"\d+\.\d+\.\d+$", features.version_module("webp"))
+    def test_version(self) -> None:
+        version = features.version_module("webp")
+        assert version is not None
+        assert re.search(r"\d+\.\d+\.\d+$", version)
 
-    def test_read_rgb(self):
+    def test_read_rgb(self) -> None:
         """
         Can we read a RGB mode WebP file without error?
         Does it have the bits we expect?
@@ -64,8 +69,10 @@ class TestFileWebp:
             # dwebp -ppm ../../Tests/images/hopper.webp -o hopper_webp_bits.ppm
             assert_image_similar_tofile(image, "Tests/images/hopper_webp_bits.ppm", 1.0)
 
-    def _roundtrip(self, tmp_path, mode, epsilon, args={}):
-        temp_file = str(tmp_path / "temp.webp")
+    def _roundtrip(
+        self, tmp_path: Path, mode: str, epsilon: float, args: dict[str, Any] = {}
+    ) -> None:
+        temp_file = tmp_path / "temp.webp"
 
         hopper(mode).save(temp_file, **args)
         with Image.open(temp_file) as image:
@@ -90,7 +97,7 @@ class TestFileWebp:
                 target = target.convert(self.rgb_mode)
             assert_image_similar(image, target, epsilon)
 
-    def test_write_rgb(self, tmp_path):
+    def test_write_rgb(self, tmp_path: Path) -> None:
         """
         Can we write a RGB mode file to webp without error?
         Does it have the bits we expect?
@@ -98,7 +105,7 @@ class TestFileWebp:
 
         self._roundtrip(tmp_path, self.rgb_mode, 12.5)
 
-    def test_write_method(self, tmp_path):
+    def test_write_method(self, tmp_path: Path) -> None:
         self._roundtrip(tmp_path, self.rgb_mode, 12.0, {"method": 6})
 
         buffer_no_args = io.BytesIO()
@@ -108,9 +115,8 @@ class TestFileWebp:
         hopper().save(buffer_method, format="WEBP", method=6)
         assert buffer_no_args.getbuffer() != buffer_method.getbuffer()
 
-    @skip_unless_feature("webp_anim")
-    def test_save_all(self, tmp_path):
-        temp_file = str(tmp_path / "temp.webp")
+    def test_save_all(self, tmp_path: Path) -> None:
+        temp_file = tmp_path / "temp.webp"
         im = Image.new("RGB", (1, 1))
         im2 = Image.new("RGB", (1, 1), "#f00")
         im.save(temp_file, save_all=True, append_images=[im2])
@@ -121,14 +127,18 @@ class TestFileWebp:
             reloaded.seek(1)
             assert_image_similar(im2, reloaded, 1)
 
-    def test_icc_profile(self, tmp_path):
-        self._roundtrip(tmp_path, self.rgb_mode, 12.5, {"icc_profile": None})
-        if _webp.HAVE_WEBPANIM:
-            self._roundtrip(
-                tmp_path, self.rgb_mode, 12.5, {"icc_profile": None, "save_all": True}
-            )
+    def test_unsupported_image_mode(self) -> None:
+        im = Image.new("1", (1, 1))
+        with pytest.raises(ValueError):
+            _webp.WebPEncode(im.getim(), False, 0, 0, "", 4, 0, b"", "")
 
-    def test_write_unsupported_mode_L(self, tmp_path):
+    def test_icc_profile(self, tmp_path: Path) -> None:
+        self._roundtrip(tmp_path, self.rgb_mode, 12.5, {"icc_profile": None})
+        self._roundtrip(
+            tmp_path, self.rgb_mode, 12.5, {"icc_profile": None, "save_all": True}
+        )
+
+    def test_write_unsupported_mode_L(self, tmp_path: Path) -> None:
         """
         Saving a black-and-white file to WebP format should work, and be
         similar to the original file.
@@ -136,7 +146,7 @@ class TestFileWebp:
 
         self._roundtrip(tmp_path, "L", 10.0)
 
-    def test_write_unsupported_mode_P(self, tmp_path):
+    def test_write_unsupported_mode_P(self, tmp_path: Path) -> None:
         """
         Saving a palette-based file to WebP format should work, and be
         similar to the original file.
@@ -144,43 +154,48 @@ class TestFileWebp:
 
         self._roundtrip(tmp_path, "P", 50.0)
 
-    def test_write_encoding_error_message(self, tmp_path):
-        temp_file = str(tmp_path / "temp.webp")
+    @pytest.mark.skipif(sys.maxsize <= 2**32, reason="Requires 64-bit system")
+    def test_write_encoding_error_message(self, tmp_path: Path) -> None:
         im = Image.new("RGB", (15000, 15000))
         with pytest.raises(ValueError) as e:
-            im.save(temp_file, method=0)
+            im.save(tmp_path / "temp.webp", method=0)
         assert str(e.value) == "encoding error 6"
 
-    def test_WebPEncode_with_invalid_args(self):
+    @pytest.mark.skipif(sys.maxsize <= 2**32, reason="Requires 64-bit system")
+    def test_write_encoding_error_bad_dimension(self, tmp_path: Path) -> None:
+        im = Image.new("L", (16384, 16384))
+        with pytest.raises(ValueError) as e:
+            im.save(tmp_path / "temp.webp")
+        assert (
+            str(e.value)
+            == "encoding error 5: Image size exceeds WebP limit of 16383 pixels"
+        )
+
+    def test_WebPEncode_with_invalid_args(self) -> None:
         """
         Calling encoder functions with no arguments should result in an error.
         """
-
-        if _webp.HAVE_WEBPANIM:
-            with pytest.raises(TypeError):
-                _webp.WebPAnimEncoder()
+        with pytest.raises(TypeError):
+            _webp.WebPAnimEncoder()
         with pytest.raises(TypeError):
             _webp.WebPEncode()
 
-    def test_WebPDecode_with_invalid_args(self):
+    def test_WebPAnimDecoder_with_invalid_args(self) -> None:
         """
         Calling decoder functions with no arguments should result in an error.
         """
-
-        if _webp.HAVE_WEBPANIM:
-            with pytest.raises(TypeError):
-                _webp.WebPAnimDecoder()
         with pytest.raises(TypeError):
-            _webp.WebPDecode()
+            _webp.WebPAnimDecoder()
 
-    def test_no_resource_warning(self, tmp_path):
+    def test_no_resource_warning(self, tmp_path: Path) -> None:
         file_path = "Tests/images/hopper.webp"
         with Image.open(file_path) as image:
-            temp_file = str(tmp_path / "temp.webp")
             with warnings.catch_warnings():
-                image.save(temp_file)
+                warnings.simplefilter("error")
 
-    def test_file_pointer_could_be_reused(self):
+                image.save(tmp_path / "temp.webp")
+
+    def test_file_pointer_could_be_reused(self) -> None:
         file_path = "Tests/images/hopper.webp"
         with open(file_path, "rb") as blob:
             Image.open(blob).load()
@@ -190,18 +205,19 @@ class TestFileWebp:
         "background",
         (0, (0,), (-1, 0, 1, 2), (253, 254, 255, 256)),
     )
-    @skip_unless_feature("webp_anim")
-    def test_invalid_background(self, background, tmp_path):
-        temp_file = str(tmp_path / "temp.webp")
+    def test_invalid_background(
+        self, background: int | tuple[int, ...], tmp_path: Path
+    ) -> None:
+        temp_file = tmp_path / "temp.webp"
         im = hopper()
         with pytest.raises(OSError):
             im.save(temp_file, save_all=True, append_images=[im], background=background)
 
-    @skip_unless_feature("webp_anim")
-    def test_background_from_gif(self, tmp_path):
+    def test_background_from_gif(self, tmp_path: Path) -> None:
+        out_webp = tmp_path / "temp.webp"
+
         # Save L mode GIF with background
         with Image.open("Tests/images/no_palette_with_background.gif") as im:
-            out_webp = str(tmp_path / "temp.webp")
             im.save(out_webp, save_all=True)
 
         # Save P mode GIF with background
@@ -209,11 +225,10 @@ class TestFileWebp:
             original_value = im.convert("RGB").getpixel((1, 1))
 
             # Save as WEBP
-            out_webp = str(tmp_path / "temp.webp")
             im.save(out_webp, save_all=True)
 
         # Save as GIF
-        out_gif = str(tmp_path / "temp.gif")
+        out_gif = tmp_path / "temp.gif"
         with Image.open(out_webp) as im:
             im.save(out_gif)
 
@@ -222,14 +237,24 @@ class TestFileWebp:
         difference = sum(abs(original_value[i] - reread_value[i]) for i in range(0, 3))
         assert difference < 5
 
-    @skip_unless_feature("webp_anim")
-    def test_duration(self, tmp_path):
+    def test_duration(self, tmp_path: Path) -> None:
+        out_webp = tmp_path / "temp.webp"
+
         with Image.open("Tests/images/dispose_bgnd.gif") as im:
             assert im.info["duration"] == 1000
-
-            out_webp = str(tmp_path / "temp.webp")
             im.save(out_webp, save_all=True)
 
         with Image.open(out_webp) as reloaded:
             reloaded.load()
             assert reloaded.info["duration"] == 1000
+
+    def test_roundtrip_rgba_palette(self, tmp_path: Path) -> None:
+        temp_file = tmp_path / "temp.webp"
+        im = Image.new("RGBA", (1, 1)).convert("P")
+        assert im.mode == "P"
+        assert im.palette is not None
+        assert im.palette.mode == "RGBA"
+        im.save(temp_file)
+
+        with Image.open(temp_file) as im:
+            assert im.getpixel((0, 0)) == (0, 0, 0, 0)
diff --git a/Tests/test_file_webp_alpha.py b/Tests/test_file_webp_alpha.py
index 5970fd2a3..c88fe3589 100644
--- a/Tests/test_file_webp_alpha.py
+++ b/Tests/test_file_webp_alpha.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+from pathlib import Path
+
 import pytest
 
 from PIL import Image
@@ -9,15 +13,10 @@ from .helper import (
     hopper,
 )
 
-_webp = pytest.importorskip("PIL._webp", reason="WebP support not installed")
+pytest.importorskip("PIL._webp", reason="WebP support not installed")
 
 
-def setup_module():
-    if _webp.WebPDecoderBuggyAlpha():
-        pytest.skip("Buggy early version of WebP installed, not testing transparency")
-
-
-def test_read_rgba():
+def test_read_rgba() -> None:
     """
     Can we read an RGBA mode file without error?
     Does it have the bits we expect?
@@ -37,7 +36,7 @@ def test_read_rgba():
         assert_image_similar_tofile(image, "Tests/images/transparent.png", 20.0)
 
 
-def test_write_lossless_rgb(tmp_path):
+def test_write_lossless_rgb(tmp_path: Path) -> None:
     """
     Can we write an RGBA mode file with lossless compression without error?
     Does it have the bits we expect?
@@ -66,7 +65,7 @@ def test_write_lossless_rgb(tmp_path):
         assert_image_equal(image, pil_image)
 
 
-def test_write_rgba(tmp_path):
+def test_write_rgba(tmp_path: Path) -> None:
     """
     Can we write a RGBA mode file to WebP without error.
     Does it have the bits we expect?
@@ -77,9 +76,6 @@ def test_write_rgba(tmp_path):
     pil_image = Image.new("RGBA", (10, 10), (255, 0, 0, 20))
     pil_image.save(temp_file)
 
-    if _webp.WebPDecoderBuggyAlpha():
-        return
-
     with Image.open(temp_file) as image:
         image.load()
 
@@ -89,15 +85,10 @@ def test_write_rgba(tmp_path):
         image.load()
         image.getdata()
 
-        # Early versions of WebP are known to produce higher deviations:
-        # deal with it
-        if _webp.WebPDecoderVersion() <= 0x201:
-            assert_image_similar(image, pil_image, 3.0)
-        else:
-            assert_image_similar(image, pil_image, 1.0)
+        assert_image_similar(image, pil_image, 1.0)
 
 
-def test_keep_rgb_values_when_transparent(tmp_path):
+def test_keep_rgb_values_when_transparent(tmp_path: Path) -> None:
     """
     Saving transparent pixels should retain their original RGB values
     when using the "exact" parameter.
@@ -126,7 +117,7 @@ def test_keep_rgb_values_when_transparent(tmp_path):
         assert_image_equal(reloaded.convert("RGB"), image)
 
 
-def test_write_unsupported_mode_PA(tmp_path):
+def test_write_unsupported_mode_PA(tmp_path: Path) -> None:
     """
     Saving a palette-based file with transparency to WebP format
     should work, and be similar to the original file.
@@ -147,3 +138,15 @@ def test_write_unsupported_mode_PA(tmp_path):
             target = im.convert("RGBA")
 
         assert_image_similar(image, target, 25.0)
+
+
+def test_alpha_quality(tmp_path: Path) -> None:
+    with Image.open("Tests/images/transparent.png") as im:
+        out = str(tmp_path / "temp.webp")
+        im.save(out)
+
+        out_quality = str(tmp_path / "quality.webp")
+        im.save(out_quality, alpha_quality=50)
+        with Image.open(out) as reloaded:
+            with Image.open(out_quality) as reloaded_quality:
+                assert reloaded.tobytes() != reloaded_quality.tobytes()
diff --git a/Tests/test_file_webp_animated.py b/Tests/test_file_webp_animated.py
index 2fd5e5484..967a0aae8 100644
--- a/Tests/test_file_webp_animated.py
+++ b/Tests/test_file_webp_animated.py
@@ -1,3 +1,8 @@
+from __future__ import annotations
+
+from collections.abc import Generator
+from pathlib import Path
+
 import pytest
 from packaging.version import parse as parse_version
 
@@ -10,13 +15,10 @@ from .helper import (
     skip_unless_feature,
 )
 
-pytestmark = [
-    skip_unless_feature("webp"),
-    skip_unless_feature("webp_anim"),
-]
+pytestmark = skip_unless_feature("webp")
 
 
-def test_n_frames():
+def test_n_frames() -> None:
     """Ensure that WebP format sets n_frames and is_animated attributes correctly."""
 
     with Image.open("Tests/images/hopper.webp") as im:
@@ -28,7 +30,7 @@ def test_n_frames():
         assert im.is_animated
 
 
-def test_write_animation_L(tmp_path):
+def test_write_animation_L(tmp_path: Path) -> None:
     """
     Convert an animated GIF to animated WebP, then compare the frame count, and first
     and last frames to ensure they're visually similar.
@@ -48,8 +50,9 @@ def test_write_animation_L(tmp_path):
             assert_image_similar(im, orig.convert("RGBA"), 32.9)
 
             if is_big_endian():
-                webp = parse_version(features.version_module("webp"))
-                if webp < parse_version("1.2.2"):
+                version = features.version_module("webp")
+                assert version is not None
+                if parse_version(version) < parse_version("1.2.2"):
                     pytest.skip("Fails with libwebp earlier than 1.2.2")
             orig.seek(orig.n_frames - 1)
             im.seek(im.n_frames - 1)
@@ -58,13 +61,13 @@ def test_write_animation_L(tmp_path):
             assert_image_similar(im, orig.convert("RGBA"), 32.9)
 
 
-def test_write_animation_RGB(tmp_path):
+def test_write_animation_RGB(tmp_path: Path) -> None:
     """
     Write an animated WebP from RGB frames, and ensure the frames
     are visually similar to the originals.
     """
 
-    def check(temp_file):
+    def check(temp_file: str) -> None:
         with Image.open(temp_file) as im:
             assert im.n_frames == 2
 
@@ -74,8 +77,9 @@ def test_write_animation_RGB(tmp_path):
 
             # Compare second frame to original
             if is_big_endian():
-                webp = parse_version(features.version_module("webp"))
-                if webp < parse_version("1.2.2"):
+                version = features.version_module("webp")
+                assert version is not None
+                if parse_version(version) < parse_version("1.2.2"):
                     pytest.skip("Fails with libwebp earlier than 1.2.2")
             im.seek(1)
             im.load()
@@ -90,7 +94,9 @@ def test_write_animation_RGB(tmp_path):
             check(temp_file1)
 
             # Tests appending using a generator
-            def im_generator(ims):
+            def im_generator(
+                ims: list[Image.Image],
+            ) -> Generator[Image.Image, None, None]:
                 yield from ims
 
             temp_file2 = str(tmp_path / "temp_generator.webp")
@@ -103,7 +109,7 @@ def test_write_animation_RGB(tmp_path):
             check(temp_file2)
 
 
-def test_timestamp_and_duration(tmp_path):
+def test_timestamp_and_duration(tmp_path: Path) -> None:
     """
     Try passing a list of durations, and make sure the encoded
     timestamps and durations are correct.
@@ -134,7 +140,7 @@ def test_timestamp_and_duration(tmp_path):
             ts += durations[frame]
 
 
-def test_float_duration(tmp_path):
+def test_float_duration(tmp_path: Path) -> None:
     temp_file = str(tmp_path / "temp.webp")
     with Image.open("Tests/images/iss634.apng") as im:
         assert im.info["duration"] == 70.0
@@ -146,7 +152,7 @@ def test_float_duration(tmp_path):
         assert reloaded.info["duration"] == 70
 
 
-def test_seeking(tmp_path):
+def test_seeking(tmp_path: Path) -> None:
     """
     Create an animated WebP file, and then try seeking through frames in reverse-order,
     verifying the timestamps and durations are correct.
@@ -177,10 +183,28 @@ def test_seeking(tmp_path):
             ts -= dur
 
 
-def test_seek_errors():
+def test_seek_errors() -> None:
     with Image.open("Tests/images/iss634.webp") as im:
         with pytest.raises(EOFError):
             im.seek(-1)
 
         with pytest.raises(EOFError):
             im.seek(42)
+
+
+def test_alpha_quality(tmp_path: Path) -> None:
+    with Image.open("Tests/images/transparent.png") as im:
+        first_frame = Image.new("L", im.size)
+
+        out = str(tmp_path / "temp.webp")
+        first_frame.save(out, save_all=True, append_images=[im])
+
+        out_quality = str(tmp_path / "quality.webp")
+        first_frame.save(
+            out_quality, save_all=True, append_images=[im], alpha_quality=50
+        )
+        with Image.open(out) as reloaded:
+            reloaded.seek(1)
+            with Image.open(out_quality) as reloaded_quality:
+                reloaded_quality.seek(1)
+                assert reloaded.tobytes() != reloaded_quality.tobytes()
diff --git a/Tests/test_file_webp_lossless.py b/Tests/test_file_webp_lossless.py
index 2da443628..80429715e 100644
--- a/Tests/test_file_webp_lossless.py
+++ b/Tests/test_file_webp_lossless.py
@@ -1,17 +1,18 @@
+from __future__ import annotations
+
+from pathlib import Path
+
 import pytest
 
 from PIL import Image
 
 from .helper import assert_image_equal, hopper
 
-_webp = pytest.importorskip("PIL._webp", reason="WebP support not installed")
+pytest.importorskip("PIL._webp", reason="WebP support not installed")
 RGB_MODE = "RGB"
 
 
-def test_write_lossless_rgb(tmp_path):
-    if _webp.WebPDecoderVersion() < 0x0200:
-        pytest.skip("lossless not included")
-
+def test_write_lossless_rgb(tmp_path: Path) -> None:
     temp_file = str(tmp_path / "temp.webp")
 
     hopper(RGB_MODE).save(temp_file, lossless=True)
diff --git a/Tests/test_file_webp_metadata.py b/Tests/test_file_webp_metadata.py
index 037479f9f..d9a834c75 100644
--- a/Tests/test_file_webp_metadata.py
+++ b/Tests/test_file_webp_metadata.py
@@ -1,4 +1,8 @@
+from __future__ import annotations
+
 from io import BytesIO
+from pathlib import Path
+from types import ModuleType
 
 import pytest
 
@@ -6,18 +10,16 @@ from PIL import Image
 
 from .helper import mark_if_feature_version, skip_unless_feature
 
-pytestmark = [
-    skip_unless_feature("webp"),
-    skip_unless_feature("webp_mux"),
-]
+pytestmark = skip_unless_feature("webp")
 
+ElementTree: ModuleType | None
 try:
     from defusedxml import ElementTree
 except ImportError:
     ElementTree = None
 
 
-def test_read_exif_metadata():
+def test_read_exif_metadata() -> None:
     file_path = "Tests/images/flower.webp"
     with Image.open(file_path) as image:
         assert image.format == "WEBP"
@@ -35,7 +37,7 @@ def test_read_exif_metadata():
             assert exif_data == expected_exif
 
 
-def test_read_exif_metadata_without_prefix():
+def test_read_exif_metadata_without_prefix() -> None:
     with Image.open("Tests/images/flower2.webp") as im:
         # Assert prefix is not present
         assert im.info["exif"][:6] != b"Exif\x00\x00"
@@ -47,7 +49,7 @@ def test_read_exif_metadata_without_prefix():
 @mark_if_feature_version(
     pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
 )
-def test_write_exif_metadata():
+def test_write_exif_metadata() -> None:
     file_path = "Tests/images/flower.jpg"
     test_buffer = BytesIO()
     with Image.open(file_path) as image:
@@ -61,7 +63,7 @@ def test_write_exif_metadata():
     assert webp_exif == expected_exif[6:], "WebP EXIF didn't match"
 
 
-def test_read_icc_profile():
+def test_read_icc_profile() -> None:
     file_path = "Tests/images/flower2.webp"
     with Image.open(file_path) as image:
         assert image.format == "WEBP"
@@ -78,7 +80,7 @@ def test_read_icc_profile():
 @mark_if_feature_version(
     pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
 )
-def test_write_icc_metadata():
+def test_write_icc_metadata() -> None:
     file_path = "Tests/images/flower2.jpg"
     test_buffer = BytesIO()
     with Image.open(file_path) as image:
@@ -98,7 +100,7 @@ def test_write_icc_metadata():
 @mark_if_feature_version(
     pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
 )
-def test_read_no_exif():
+def test_read_no_exif() -> None:
     file_path = "Tests/images/flower.jpg"
     test_buffer = BytesIO()
     with Image.open(file_path) as image:
@@ -111,24 +113,35 @@ def test_read_no_exif():
         assert not webp_image._getexif()
 
 
-def test_getxmp():
+def test_getxmp() -> None:
     with Image.open("Tests/images/flower.webp") as im:
         assert "xmp" not in im.info
-        assert im.getxmp() == {}
+        if ElementTree is None:
+            with pytest.warns(
+                UserWarning,
+                match="XMP data cannot be read without defusedxml dependency",
+            ):
+                xmp = im.getxmp()
+        else:
+            xmp = im.getxmp()
+        assert xmp == {}
 
     with Image.open("Tests/images/flower2.webp") as im:
         if ElementTree is None:
-            with pytest.warns(UserWarning):
+            with pytest.warns(
+                UserWarning,
+                match="XMP data cannot be read without defusedxml dependency",
+            ):
                 assert im.getxmp() == {}
         else:
+            assert "xmp" in im.info
             assert (
                 im.getxmp()["xmpmeta"]["xmptk"]
                 == "Adobe XMP Core 5.3-c011 66.145661, 2012/02/06-14:56:27        "
             )
 
 
-@skip_unless_feature("webp_anim")
-def test_write_animated_metadata(tmp_path):
+def test_write_animated_metadata(tmp_path: Path) -> None:
     iccp_data = b"<iccp_data>"
     exif_data = b"<exif_data>"
     xmp_data = b"<xmp_data>"
diff --git a/Tests/test_file_wmf.py b/Tests/test_file_wmf.py
index 7c8b54fd1..424640d7b 100644
--- a/Tests/test_file_wmf.py
+++ b/Tests/test_file_wmf.py
@@ -1,11 +1,17 @@
+from __future__ import annotations
+
+from io import BytesIO
+from pathlib import Path
+from typing import IO
+
 import pytest
 
-from PIL import Image, WmfImagePlugin
+from PIL import Image, ImageFile, WmfImagePlugin
 
 from .helper import assert_image_similar_tofile, hopper
 
 
-def test_load_raw():
+def test_load_raw() -> None:
     # Test basic EMF open and rendering
     with Image.open("Tests/images/drawing.emf") as im:
         if hasattr(Image.core, "drawwmf"):
@@ -23,17 +29,20 @@ def test_load_raw():
             assert_image_similar_tofile(im, "Tests/images/drawing_wmf_ref.png", 2.0)
 
 
-def test_load():
+def test_load() -> None:
     with Image.open("Tests/images/drawing.emf") as im:
         if hasattr(Image.core, "drawwmf"):
             assert im.load()[0, 0] == (255, 255, 255)
 
 
-def test_register_handler(tmp_path):
-    class TestHandler:
+def test_register_handler(tmp_path: Path) -> None:
+    class TestHandler(ImageFile.StubHandler):
         methodCalled = False
 
-        def save(self, im, fp, filename):
+        def load(self, im: ImageFile.StubImageFile) -> Image.Image:
+            return Image.new("RGB", (1, 1))
+
+        def save(self, im: Image.Image, fp: IO[bytes], filename: str) -> None:
             self.methodCalled = True
 
     handler = TestHandler()
@@ -49,12 +58,18 @@ def test_register_handler(tmp_path):
     WmfImagePlugin.register_handler(original_handler)
 
 
-def test_load_float_dpi():
+def test_load_float_dpi() -> None:
     with Image.open("Tests/images/drawing.emf") as im:
         assert im.info["dpi"] == 1423.7668161434979
 
+    with open("Tests/images/drawing.emf", "rb") as fp:
+        data = fp.read()
+    b = BytesIO(data[:8] + b"\x06\xFA" + data[10:])
+    with Image.open(b) as im:
+        assert im.info["dpi"][0] == 2540
 
-def test_load_set_dpi():
+
+def test_load_set_dpi() -> None:
     with Image.open("Tests/images/drawing.wmf") as im:
         assert im.size == (82, 82)
 
@@ -66,7 +81,7 @@ def test_load_set_dpi():
 
 
 @pytest.mark.parametrize("ext", (".wmf", ".emf"))
-def test_save(ext, tmp_path):
+def test_save(ext: str, tmp_path: Path) -> None:
     im = hopper()
 
     tmpfile = str(tmp_path / ("temp" + ext))
diff --git a/Tests/test_file_xbm.py b/Tests/test_file_xbm.py
index d2c05b78a..44dd2541f 100644
--- a/Tests/test_file_xbm.py
+++ b/Tests/test_file_xbm.py
@@ -1,4 +1,7 @@
+from __future__ import annotations
+
 from io import BytesIO
+from pathlib import Path
 
 import pytest
 
@@ -30,14 +33,14 @@ static char basic_bits[] = {
 """
 
 
-def test_pil151():
+def test_pil151() -> None:
     with Image.open(BytesIO(PIL151)) as im:
         im.load()
         assert im.mode == "1"
         assert im.size == (32, 32)
 
 
-def test_open():
+def test_open() -> None:
     # Arrange
     # Created with `convert hopper.png hopper.xbm`
     filename = "Tests/images/hopper.xbm"
@@ -49,7 +52,7 @@ def test_open():
         assert im.size == (128, 128)
 
 
-def test_open_filename_with_underscore():
+def test_open_filename_with_underscore() -> None:
     # Arrange
     # Created with `convert hopper.png hopper_underscore.xbm`
     filename = "Tests/images/hopper_underscore.xbm"
@@ -61,14 +64,14 @@ def test_open_filename_with_underscore():
         assert im.size == (128, 128)
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
         XbmImagePlugin.XbmImageFile(invalid_file)
 
 
-def test_save_wrong_mode(tmp_path):
+def test_save_wrong_mode(tmp_path: Path) -> None:
     im = hopper()
     out = str(tmp_path / "temp.xbm")
 
@@ -76,7 +79,7 @@ def test_save_wrong_mode(tmp_path):
         im.save(out)
 
 
-def test_hotspot(tmp_path):
+def test_hotspot(tmp_path: Path) -> None:
     im = hopper("1")
     out = str(tmp_path / "temp.xbm")
 
diff --git a/Tests/test_file_xpm.py b/Tests/test_file_xpm.py
index 8595b07eb..26afe93f4 100644
--- a/Tests/test_file_xpm.py
+++ b/Tests/test_file_xpm.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, XpmImagePlugin
@@ -7,7 +9,7 @@ from .helper import assert_image_similar, hopper
 TEST_FILE = "Tests/images/hopper.xpm"
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open(TEST_FILE) as im:
         im.load()
         assert im.mode == "P"
@@ -18,14 +20,14 @@ def test_sanity():
         assert_image_similar(im.convert("RGB"), hopper("RGB"), 60)
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     invalid_file = "Tests/images/flower.jpg"
 
     with pytest.raises(SyntaxError):
         XpmImagePlugin.XpmImageFile(invalid_file)
 
 
-def test_load_read():
+def test_load_read() -> None:
     # Arrange
     with Image.open(TEST_FILE) as im:
         dummy_bytes = 1
diff --git a/Tests/test_file_xvthumb.py b/Tests/test_file_xvthumb.py
index 9efe7ec14..6b8115930 100644
--- a/Tests/test_file_xvthumb.py
+++ b/Tests/test_file_xvthumb.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, XVThumbImagePlugin
@@ -7,7 +9,7 @@ from .helper import assert_image_similar, hopper
 TEST_FILE = "Tests/images/hopper.p7"
 
 
-def test_open():
+def test_open() -> None:
     # Act
     with Image.open(TEST_FILE) as im:
         # Assert
@@ -18,7 +20,7 @@ def test_open():
         assert_image_similar(im, im_hopper, 9)
 
 
-def test_unexpected_eof():
+def test_unexpected_eof() -> None:
     # Test unexpected EOF reading XV thumbnail file
     # Arrange
     bad_file = "Tests/images/hopper_bad.p7"
@@ -28,7 +30,7 @@ def test_unexpected_eof():
         XVThumbImagePlugin.XVThumbImageFile(bad_file)
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     # Arrange
     invalid_file = "Tests/images/flower.jpg"
 
diff --git a/Tests/test_font_bdf.py b/Tests/test_font_bdf.py
index 1e7caee32..136070f9e 100644
--- a/Tests/test_font_bdf.py
+++ b/Tests/test_font_bdf.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import BdfFontFile, FontFile
@@ -5,7 +7,7 @@ from PIL import BdfFontFile, FontFile
 filename = "Tests/images/courB08.bdf"
 
 
-def test_sanity():
+def test_sanity() -> None:
     with open(filename, "rb") as test_file:
         font = BdfFontFile.BdfFontFile(test_file)
 
@@ -13,7 +15,7 @@ def test_sanity():
     assert len([_f for _f in font.glyph if _f]) == 190
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     with open("Tests/images/flower.jpg", "rb") as fp:
         with pytest.raises(SyntaxError):
             BdfFontFile.BdfFontFile(fp)
diff --git a/Tests/test_font_crash.py b/Tests/test_font_crash.py
index 27663f396..b82340ef7 100644
--- a/Tests/test_font_crash.py
+++ b/Tests/test_font_crash.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, ImageDraw, ImageFont
@@ -6,7 +8,7 @@ from .helper import skip_unless_feature
 
 
 class TestFontCrash:
-    def _fuzz_font(self, font):
+    def _fuzz_font(self, font: ImageFont.FreeTypeFont) -> None:
         # from fuzzers.fuzz_font
         font.getbbox("ABC")
         font.getmask("test text")
@@ -16,7 +18,7 @@ class TestFontCrash:
             draw.text((10, 10), "Test Text", font=font, fill="#000")
 
     @skip_unless_feature("freetype2")
-    def test_segfault(self):
+    def test_segfault(self) -> None:
         with pytest.raises(OSError):
             font = ImageFont.truetype("Tests/fonts/fuzz_font-5203009437302784")
             self._fuzz_font(font)
diff --git a/Tests/test_font_leaks.py b/Tests/test_font_leaks.py
index 38f7ddac5..ab8a7f9ec 100644
--- a/Tests/test_font_leaks.py
+++ b/Tests/test_font_leaks.py
@@ -1,6 +1,10 @@
-from PIL import Image, ImageDraw, ImageFont
+from __future__ import annotations
 
-from .helper import PillowLeakTestCase, skip_unless_feature
+from PIL import Image, ImageDraw, ImageFont, _util
+
+from .helper import PillowLeakTestCase, features, skip_unless_feature
+
+original_core = ImageFont.core
 
 
 class TestTTypeFontLeak(PillowLeakTestCase):
@@ -8,7 +12,7 @@ class TestTTypeFontLeak(PillowLeakTestCase):
     iterations = 10
     mem_limit = 4096  # k
 
-    def _test_font(self, font):
+    def _test_font(self, font: ImageFont.FreeTypeFont | ImageFont.ImageFont) -> None:
         im = Image.new("RGB", (255, 255), "white")
         draw = ImageDraw.ImageDraw(im)
         self._test_leak(
@@ -18,7 +22,7 @@ class TestTTypeFontLeak(PillowLeakTestCase):
         )
 
     @skip_unless_feature("freetype2")
-    def test_leak(self):
+    def test_leak(self) -> None:
         ttype = ImageFont.truetype("Tests/fonts/FreeMono.ttf", 20)
         self._test_font(ttype)
 
@@ -28,6 +32,12 @@ class TestDefaultFontLeak(TestTTypeFontLeak):
     iterations = 100
     mem_limit = 1024  # k
 
-    def test_leak(self):
-        default_font = ImageFont.load_default()
+    def test_leak(self) -> None:
+        if features.check_module("freetype2"):
+            ImageFont.core = _util.DeferredError(ImportError("Disabled for testing"))
+        try:
+            default_font = ImageFont.load_default()
+        finally:
+            ImageFont.core = original_core
+
         self._test_font(default_font)
diff --git a/Tests/test_font_pcf.py b/Tests/test_font_pcf.py
index 815ef1d92..567ddaf13 100644
--- a/Tests/test_font_pcf.py
+++ b/Tests/test_font_pcf.py
@@ -1,4 +1,8 @@
+from __future__ import annotations
+
 import os
+from pathlib import Path
+from typing import AnyStr
 
 import pytest
 
@@ -18,7 +22,7 @@ message = "hello, world"
 pytestmark = skip_unless_feature("zlib")
 
 
-def save_font(request, tmp_path):
+def save_font(request: pytest.FixtureRequest, tmp_path: Path) -> str:
     with open(fontname, "rb") as test_file:
         font = PcfFontFile.PcfFontFile(test_file)
     assert isinstance(font, FontFile.FontFile)
@@ -27,7 +31,7 @@ def save_font(request, tmp_path):
 
     tempname = str(tmp_path / "temp.pil")
 
-    def delete_tempfile():
+    def delete_tempfile() -> None:
         try:
             os.remove(tempname[:-4] + ".pbm")
         except OSError:
@@ -45,11 +49,11 @@ def save_font(request, tmp_path):
     return tempname
 
 
-def test_sanity(request, tmp_path):
+def test_sanity(request: pytest.FixtureRequest, tmp_path: Path) -> None:
     save_font(request, tmp_path)
 
 
-def test_less_than_256_characters():
+def test_less_than_256_characters() -> None:
     with open("Tests/fonts/10x20-ISO8859-1-fewer-characters.pcf", "rb") as test_file:
         font = PcfFontFile.PcfFontFile(test_file)
     assert isinstance(font, FontFile.FontFile)
@@ -57,13 +61,13 @@ def test_less_than_256_characters():
     assert len([_f for _f in font.glyph if _f]) == 127
 
 
-def test_invalid_file():
+def test_invalid_file() -> None:
     with open("Tests/images/flower.jpg", "rb") as fp:
         with pytest.raises(SyntaxError):
             PcfFontFile.PcfFontFile(fp)
 
 
-def test_draw(request, tmp_path):
+def test_draw(request: pytest.FixtureRequest, tmp_path: Path) -> None:
     tempname = save_font(request, tmp_path)
     font = ImageFont.load(tempname)
     im = Image.new("L", (130, 30), "white")
@@ -72,7 +76,7 @@ def test_draw(request, tmp_path):
     assert_image_similar_tofile(im, "Tests/images/test_draw_pbm_target.png", 0)
 
 
-def test_textsize(request, tmp_path):
+def test_textsize(request: pytest.FixtureRequest, tmp_path: Path) -> None:
     tempname = save_font(request, tmp_path)
     font = ImageFont.load(tempname)
     for i in range(255):
@@ -88,7 +92,9 @@ def test_textsize(request, tmp_path):
         assert font.getbbox(msg) == (0, 0, len(msg) * 10, 20)
 
 
-def _test_high_characters(request, tmp_path, message):
+def _test_high_characters(
+    request: pytest.FixtureRequest, tmp_path: Path, message: AnyStr
+) -> None:
     tempname = save_font(request, tmp_path)
     font = ImageFont.load(tempname)
     im = Image.new("L", (750, 30), "white")
@@ -97,7 +103,7 @@ def _test_high_characters(request, tmp_path, message):
     assert_image_similar_tofile(im, "Tests/images/high_ascii_chars.png", 0)
 
 
-def test_high_characters(request, tmp_path):
+def test_high_characters(request: pytest.FixtureRequest, tmp_path: Path) -> None:
     message = "".join(chr(i + 1) for i in range(140, 232))
     _test_high_characters(request, tmp_path, message)
     # accept bytes instances.
diff --git a/Tests/test_font_pcf_charsets.py b/Tests/test_font_pcf_charsets.py
index 664663fd6..895458d9d 100644
--- a/Tests/test_font_pcf_charsets.py
+++ b/Tests/test_font_pcf_charsets.py
@@ -1,4 +1,8 @@
+from __future__ import annotations
+
 import os
+from pathlib import Path
+from typing import TypedDict
 
 import pytest
 
@@ -12,7 +16,14 @@ from .helper import (
 
 fontname = "Tests/fonts/ter-x20b.pcf"
 
-charsets = {
+
+class Charset(TypedDict):
+    glyph_count: int
+    message: str
+    image1: str
+
+
+charsets: dict[str, Charset] = {
     "iso8859-1": {
         "glyph_count": 223,
         "message": "hello, world",
@@ -34,7 +45,7 @@ charsets = {
 pytestmark = skip_unless_feature("zlib")
 
 
-def save_font(request, tmp_path, encoding):
+def save_font(request: pytest.FixtureRequest, tmp_path: Path, encoding: str) -> str:
     with open(fontname, "rb") as test_file:
         font = PcfFontFile.PcfFontFile(test_file, encoding)
     assert isinstance(font, FontFile.FontFile)
@@ -43,7 +54,7 @@ def save_font(request, tmp_path, encoding):
 
     tempname = str(tmp_path / "temp.pil")
 
-    def delete_tempfile():
+    def delete_tempfile() -> None:
         try:
             os.remove(tempname[:-4] + ".pbm")
         except OSError:
@@ -62,12 +73,12 @@ def save_font(request, tmp_path, encoding):
 
 
 @pytest.mark.parametrize("encoding", ("iso8859-1", "iso8859-2", "cp1250"))
-def test_sanity(request, tmp_path, encoding):
+def test_sanity(request: pytest.FixtureRequest, tmp_path: Path, encoding: str) -> None:
     save_font(request, tmp_path, encoding)
 
 
 @pytest.mark.parametrize("encoding", ("iso8859-1", "iso8859-2", "cp1250"))
-def test_draw(request, tmp_path, encoding):
+def test_draw(request: pytest.FixtureRequest, tmp_path: Path, encoding: str) -> None:
     tempname = save_font(request, tmp_path, encoding)
     font = ImageFont.load(tempname)
     im = Image.new("L", (150, 30), "white")
@@ -78,7 +89,9 @@ def test_draw(request, tmp_path, encoding):
 
 
 @pytest.mark.parametrize("encoding", ("iso8859-1", "iso8859-2", "cp1250"))
-def test_textsize(request, tmp_path, encoding):
+def test_textsize(
+    request: pytest.FixtureRequest, tmp_path: Path, encoding: str
+) -> None:
     tempname = save_font(request, tmp_path, encoding)
     font = ImageFont.load(tempname)
     for i in range(255):
diff --git a/Tests/test_fontfile.py b/Tests/test_fontfile.py
new file mode 100644
index 000000000..206499a04
--- /dev/null
+++ b/Tests/test_fontfile.py
@@ -0,0 +1,15 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+import pytest
+
+from PIL import FontFile
+
+
+def test_save(tmp_path: Path) -> None:
+    tempname = str(tmp_path / "temp.pil")
+
+    font = FontFile.FontFile()
+    with pytest.raises(ValueError):
+        font.save(tempname)
diff --git a/Tests/test_format_hsv.py b/Tests/test_format_hsv.py
index b485e854f..c07024a2c 100644
--- a/Tests/test_format_hsv.py
+++ b/Tests/test_format_hsv.py
@@ -1,29 +1,28 @@
+from __future__ import annotations
+
 import colorsys
 import itertools
+from typing import Callable
 
 from PIL import Image
 
 from .helper import assert_image_similar, hopper
 
 
-def int_to_float(i):
+def int_to_float(i: int) -> float:
     return i / 255
 
 
-def str_to_float(i):
-    return ord(i) / 255
-
-
-def tuple_to_ints(tp):
+def tuple_to_ints(tp: tuple[float, float, float]) -> tuple[int, int, int]:
     x, y, z = tp
     return int(x * 255.0), int(y * 255.0), int(z * 255.0)
 
 
-def test_sanity():
+def test_sanity() -> None:
     Image.new("HSV", (100, 100))
 
 
-def wedge():
+def wedge() -> Image.Image:
     w = Image._wedge()
     w90 = w.rotate(90)
 
@@ -47,7 +46,11 @@ def wedge():
     return img
 
 
-def to_xxx_colorsys(im, func, mode):
+def to_xxx_colorsys(
+    im: Image.Image,
+    func: Callable[[float, float, float], tuple[float, float, float]],
+    mode: str,
+) -> Image.Image:
     # convert the hard way using the library colorsys routines.
 
     (r, g, b) = im.split()
@@ -68,15 +71,15 @@ def to_xxx_colorsys(im, func, mode):
     return hsv
 
 
-def to_hsv_colorsys(im):
+def to_hsv_colorsys(im: Image.Image) -> Image.Image:
     return to_xxx_colorsys(im, colorsys.rgb_to_hsv, "HSV")
 
 
-def to_rgb_colorsys(im):
+def to_rgb_colorsys(im: Image.Image) -> Image.Image:
     return to_xxx_colorsys(im, colorsys.hsv_to_rgb, "RGB")
 
 
-def test_wedge():
+def test_wedge() -> None:
     src = wedge().resize((3 * 32, 32), Image.Resampling.BILINEAR)
     im = src.convert("HSV")
     comparable = to_hsv_colorsys(src)
@@ -108,7 +111,7 @@ def test_wedge():
     )
 
 
-def test_convert():
+def test_convert() -> None:
     im = hopper("RGB").convert("HSV")
     comparable = to_hsv_colorsys(hopper("RGB"))
 
@@ -126,7 +129,7 @@ def test_convert():
     )
 
 
-def test_hsv_to_rgb():
+def test_hsv_to_rgb() -> None:
     comparable = to_hsv_colorsys(hopper("RGB"))
     converted = comparable.convert("RGB")
     comparable = to_rgb_colorsys(comparable)
diff --git a/Tests/test_format_lab.py b/Tests/test_format_lab.py
index 41c8efdf3..4fcc37e88 100644
--- a/Tests/test_format_lab.py
+++ b/Tests/test_format_lab.py
@@ -1,7 +1,9 @@
+from __future__ import annotations
+
 from PIL import Image
 
 
-def test_white():
+def test_white() -> None:
     with Image.open("Tests/images/lab.tif") as i:
         i.load()
 
@@ -22,7 +24,7 @@ def test_white():
     assert list(b) == [128] * 100
 
 
-def test_green():
+def test_green() -> None:
     # l= 50 (/100), a = -100 (-128 .. 128) b=0 in PS
     # == RGB: 0, 152, 117
     with Image.open("Tests/images/lab-green.tif") as i:
@@ -30,7 +32,7 @@ def test_green():
     assert k == (128, 28, 128)
 
 
-def test_red():
+def test_red() -> None:
     # l= 50 (/100), a = 100 (-128 .. 128) b=0 in PS
     # == RGB: 255, 0, 124
     with Image.open("Tests/images/lab-red.tif") as i:
diff --git a/Tests/test_image.py b/Tests/test_image.py
index 85f9f7d02..c8df474f4 100644
--- a/Tests/test_image.py
+++ b/Tests/test_image.py
@@ -1,9 +1,15 @@
+from __future__ import annotations
+
 import io
+import logging
 import os
 import shutil
 import sys
 import tempfile
 import warnings
+from pathlib import Path
+from types import ModuleType
+from typing import IO, Any
 
 import pytest
 
@@ -11,6 +17,7 @@ from PIL import (
     ExifTags,
     Image,
     ImageDraw,
+    ImageFile,
     ImagePalette,
     UnidentifiedImageError,
     features,
@@ -19,57 +26,53 @@ from PIL import (
 from .helper import (
     assert_image_equal,
     assert_image_equal_tofile,
+    assert_image_similar,
     assert_image_similar_tofile,
     assert_not_all_same,
     hopper,
+    is_big_endian,
     is_win32,
     mark_if_feature_version,
     skip_unless_feature,
 )
 
+ElementTree: ModuleType | None
+try:
+    from defusedxml import ElementTree
+except ImportError:
+    ElementTree = None
+
+PrettyPrinter: type | None
+try:
+    from IPython.lib.pretty import PrettyPrinter
+except ImportError:
+    PrettyPrinter = None
+
+
+# Deprecation helper
+def helper_image_new(mode: str, size: tuple[int, int]) -> Image.Image:
+    if mode.startswith("BGR;"):
+        with pytest.warns(DeprecationWarning):
+            return Image.new(mode, size)
+    else:
+        return Image.new(mode, size)
+
 
 class TestImage:
-    @pytest.mark.parametrize(
-        "mode",
-        (
-            "1",
-            "P",
-            "PA",
-            "L",
-            "LA",
-            "La",
-            "F",
-            "I",
-            "I;16",
-            "I;16L",
-            "I;16B",
-            "I;16N",
-            "RGB",
-            "RGBX",
-            "RGBA",
-            "RGBa",
-            "BGR;15",
-            "BGR;16",
-            "BGR;24",
-            "CMYK",
-            "YCbCr",
-            "LAB",
-            "HSV",
-        ),
-    )
-    def test_image_modes_success(self, mode):
-        Image.new(mode, (1, 1))
+    @pytest.mark.parametrize("mode", Image.MODES + ["BGR;15", "BGR;16", "BGR;24"])
+    def test_image_modes_success(self, mode: str) -> None:
+        helper_image_new(mode, (1, 1))
 
     @pytest.mark.parametrize("mode", ("", "bad", "very very long"))
-    def test_image_modes_fail(self, mode):
+    def test_image_modes_fail(self, mode: str) -> None:
         with pytest.raises(ValueError) as e:
             Image.new(mode, (1, 1))
         assert str(e.value) == "unrecognized image mode"
 
-    def test_exception_inheritance(self):
+    def test_exception_inheritance(self) -> None:
         assert issubclass(UnidentifiedImageError, OSError)
 
-    def test_sanity(self):
+    def test_sanity(self) -> None:
         im = Image.new("L", (100, 100))
         assert repr(im)[:45] == "<PIL.Image.Image image mode=L size=100x100 at"
         assert im.mode == "L"
@@ -94,26 +97,33 @@ class TestImage:
         # with pytest.raises(MemoryError):
         #   Image.new("L", (1000000, 1000000))
 
-    def test_repr_pretty(self):
-        class Pretty:
-            def text(self, text):
-                self.pretty_output = text
-
+    @pytest.mark.skipif(PrettyPrinter is None, reason="IPython is not installed")
+    def test_repr_pretty(self) -> None:
         im = Image.new("L", (100, 100))
 
-        p = Pretty()
-        im._repr_pretty_(p, None)
-        assert p.pretty_output == "<PIL.Image.Image image mode=L size=100x100>"
+        output = io.StringIO()
+        assert PrettyPrinter is not None
+        p = PrettyPrinter(output)
+        im._repr_pretty_(p, False)
+        assert output.getvalue() == "<PIL.Image.Image image mode=L size=100x100>"
 
-    def test_open_formats(self):
+    def test_open_formats(self) -> None:
         PNGFILE = "Tests/images/hopper.png"
         JPGFILE = "Tests/images/hopper.jpg"
 
         with pytest.raises(TypeError):
-            with Image.open(PNGFILE, formats=123):
+            with Image.open(PNGFILE, formats=123):  # type: ignore[arg-type]
                 pass
 
-        for formats in [["JPEG"], ("JPEG",), ["jpeg"], ["Jpeg"], ["jPeG"], ["JpEg"]]:
+        format_list: list[list[str] | tuple[str, ...]] = [
+            ["JPEG"],
+            ("JPEG",),
+            ["jpeg"],
+            ["Jpeg"],
+            ["jPeG"],
+            ["JpEg"],
+        ]
+        for formats in format_list:
             with pytest.raises(UnidentifiedImageError):
                 with Image.open(PNGFILE, formats=formats):
                     pass
@@ -127,33 +137,46 @@ class TestImage:
                 assert im.mode == "RGB"
                 assert im.size == (128, 128)
 
-    def test_width_height(self):
+    def test_open_verbose_failure(self, monkeypatch: pytest.MonkeyPatch) -> None:
+        monkeypatch.setattr(Image, "WARN_POSSIBLE_FORMATS", True)
+
+        im = io.BytesIO(b"")
+        with pytest.warns(UserWarning):
+            with pytest.raises(UnidentifiedImageError):
+                with Image.open(im):
+                    pass
+
+    def test_width_height(self) -> None:
         im = Image.new("RGB", (1, 2))
         assert im.width == 1
         assert im.height == 2
 
         with pytest.raises(AttributeError):
-            im.size = (3, 4)
+            im.size = (3, 4)  # type: ignore[misc]
 
-    def test_invalid_image(self):
+    def test_set_mode(self) -> None:
+        im = Image.new("RGB", (1, 1))
+
+        with pytest.raises(AttributeError):
+            im.mode = "P"  # type: ignore[misc]
+
+    def test_invalid_image(self) -> None:
         im = io.BytesIO(b"")
         with pytest.raises(UnidentifiedImageError):
             with Image.open(im):
                 pass
 
-    def test_bad_mode(self):
+    def test_bad_mode(self) -> None:
         with pytest.raises(ValueError):
-            with Image.open("filename", "bad mode"):
+            with Image.open("filename", "bad mode"):  # type: ignore[arg-type]
                 pass
 
-    def test_stringio(self):
+    def test_stringio(self) -> None:
         with pytest.raises(ValueError):
-            with Image.open(io.StringIO()):
+            with Image.open(io.StringIO()):  # type: ignore[arg-type]
                 pass
 
-    def test_pathlib(self, tmp_path):
-        from PIL.Image import Path
-
+    def test_pathlib(self, tmp_path: Path) -> None:
         with Image.open(Path("Tests/images/multipage-mmap.tiff")) as im:
             assert im.mode == "P"
             assert im.size == (10, 10)
@@ -170,12 +193,22 @@ class TestImage:
                     os.remove(temp_file)
                 im.save(Path(temp_file))
 
-    def test_fp_name(self, tmp_path):
+    def test_fp_name(self, tmp_path: Path) -> None:
         temp_file = str(tmp_path / "temp.jpg")
 
-        class FP:
-            def write(self, b):
-                pass
+        class FP(io.BytesIO):
+            name: str
+
+            if sys.version_info >= (3, 12):
+                from collections.abc import Buffer
+
+                def write(self, data: Buffer) -> int:
+                    return len(data)
+
+            else:
+
+                def write(self, data: Any) -> int:
+                    return len(data)
 
         fp = FP()
         fp.name = temp_file
@@ -183,22 +216,23 @@ class TestImage:
         im = hopper()
         im.save(fp)
 
-    def test_tempfile(self):
+    def test_tempfile(self) -> None:
         # see #1460, pathlib support breaks tempfile.TemporaryFile on py27
         # Will error out on save on 3.0.0
         im = hopper()
         with tempfile.TemporaryFile() as fp:
             im.save(fp, "JPEG")
             fp.seek(0)
-            assert_image_similar_tofile(im, fp, 20)
+            with Image.open(fp) as reloaded:
+                assert_image_similar(im, reloaded, 20)
 
-    def test_unknown_extension(self, tmp_path):
+    def test_unknown_extension(self, tmp_path: Path) -> None:
         im = hopper()
         temp_file = str(tmp_path / "temp.unknown")
         with pytest.raises(ValueError):
             im.save(temp_file)
 
-    def test_internals(self):
+    def test_internals(self) -> None:
         im = Image.new("L", (100, 100))
         im.readonly = 1
         im._copy()
@@ -213,7 +247,7 @@ class TestImage:
         sys.platform == "cygwin",
         reason="Test requires opening an mmaped file for writing",
     )
-    def test_readonly_save(self, tmp_path):
+    def test_readonly_save(self, tmp_path: Path) -> None:
         temp_file = str(tmp_path / "temp.bmp")
         shutil.copy("Tests/images/rgb32bf-rgba.bmp", temp_file)
 
@@ -221,7 +255,7 @@ class TestImage:
             assert im.readonly
             im.save(temp_file)
 
-    def test_dump(self, tmp_path):
+    def test_dump(self, tmp_path: Path) -> None:
         im = Image.new("L", (10, 10))
         im._dump(str(tmp_path / "temp_L.ppm"))
 
@@ -232,7 +266,7 @@ class TestImage:
         with pytest.raises(ValueError):
             im._dump(str(tmp_path / "temp_HSV.ppm"))
 
-    def test_comparison_with_other_type(self):
+    def test_comparison_with_other_type(self) -> None:
         # Arrange
         item = Image.new("RGB", (25, 25), "#000")
         num = 12
@@ -242,7 +276,7 @@ class TestImage:
         assert item is not None
         assert item != num
 
-    def test_expand_x(self):
+    def test_expand_x(self) -> None:
         # Arrange
         im = hopper()
         orig_size = im.size
@@ -255,7 +289,7 @@ class TestImage:
         assert im.size[0] == orig_size[0] + 2 * xmargin
         assert im.size[1] == orig_size[1] + 2 * xmargin
 
-    def test_expand_xy(self):
+    def test_expand_xy(self) -> None:
         # Arrange
         im = hopper()
         orig_size = im.size
@@ -269,12 +303,12 @@ class TestImage:
         assert im.size[0] == orig_size[0] + 2 * xmargin
         assert im.size[1] == orig_size[1] + 2 * ymargin
 
-    def test_getbands(self):
+    def test_getbands(self) -> None:
         # Assert
         assert hopper("RGB").getbands() == ("R", "G", "B")
         assert hopper("YCbCr").getbands() == ("Y", "Cb", "Cr")
 
-    def test_getchannel_wrong_params(self):
+    def test_getchannel_wrong_params(self) -> None:
         im = hopper()
 
         with pytest.raises(ValueError):
@@ -286,7 +320,7 @@ class TestImage:
         with pytest.raises(ValueError):
             im.getchannel("1")
 
-    def test_getchannel(self):
+    def test_getchannel(self) -> None:
         im = hopper("YCbCr")
         Y, Cb, Cr = im.split()
 
@@ -297,7 +331,7 @@ class TestImage:
         assert_image_equal(Cr, im.getchannel(2))
         assert_image_equal(Cr, im.getchannel("Cr"))
 
-    def test_getbbox(self):
+    def test_getbbox(self) -> None:
         # Arrange
         im = hopper()
 
@@ -307,7 +341,7 @@ class TestImage:
         # Assert
         assert bbox == (0, 0, 128, 128)
 
-    def test_ne(self):
+    def test_ne(self) -> None:
         # Arrange
         im1 = Image.new("RGB", (25, 25), "black")
         im2 = Image.new("RGB", (25, 25), "white")
@@ -315,7 +349,7 @@ class TestImage:
         # Act / Assert
         assert im1 != im2
 
-    def test_alpha_composite(self):
+    def test_alpha_composite(self) -> None:
         # https://stackoverflow.com/questions/3374878
         # Arrange
         expected_colors = sorted(
@@ -343,10 +377,11 @@ class TestImage:
         img = Image.alpha_composite(dst, src)
 
         # Assert
-        img_colors = sorted(img.getcolors())
-        assert img_colors == expected_colors
+        img_colors = img.getcolors()
+        assert img_colors is not None
+        assert sorted(img_colors) == expected_colors
 
-    def test_alpha_inplace(self):
+    def test_alpha_inplace(self) -> None:
         src = Image.new("RGBA", (128, 128), "blue")
 
         over = Image.new("RGBA", (128, 128), "red")
@@ -388,17 +423,17 @@ class TestImage:
 
         # errors
         with pytest.raises(ValueError):
-            source.alpha_composite(over, "invalid source")
+            source.alpha_composite(over, "invalid destination")  # type: ignore[arg-type]
         with pytest.raises(ValueError):
-            source.alpha_composite(over, (0, 0), "invalid destination")
+            source.alpha_composite(over, (0, 0), "invalid source")  # type: ignore[arg-type]
         with pytest.raises(ValueError):
-            source.alpha_composite(over, 0)
+            source.alpha_composite(over, 0)  # type: ignore[arg-type]
         with pytest.raises(ValueError):
-            source.alpha_composite(over, (0, 0), 0)
+            source.alpha_composite(over, (0, 0), 0)  # type: ignore[arg-type]
         with pytest.raises(ValueError):
             source.alpha_composite(over, (0, 0), (0, -1))
 
-    def test_register_open_duplicates(self):
+    def test_register_open_duplicates(self) -> None:
         # Arrange
         factory, accept = Image.OPEN["JPEG"]
         id_length = len(Image.ID)
@@ -409,7 +444,7 @@ class TestImage:
         # Assert
         assert len(Image.ID) == id_length
 
-    def test_registered_extensions_uninitialized(self):
+    def test_registered_extensions_uninitialized(self) -> None:
         # Arrange
         Image._initialized = 0
 
@@ -419,7 +454,7 @@ class TestImage:
         # Assert
         assert Image._initialized == 2
 
-    def test_registered_extensions(self):
+    def test_registered_extensions(self) -> None:
         # Arrange
         # Open an image to trigger plugin registration
         with Image.open("Tests/images/rgb.jpg"):
@@ -433,7 +468,7 @@ class TestImage:
         for ext in [".cur", ".icns", ".tif", ".tiff"]:
             assert ext in extensions
 
-    def test_effect_mandelbrot(self):
+    def test_effect_mandelbrot(self) -> None:
         # Arrange
         size = (512, 512)
         extent = (-3, -2.5, 2, 2.5)
@@ -446,7 +481,7 @@ class TestImage:
         assert im.size == (512, 512)
         assert_image_equal_tofile(im, "Tests/images/effect_mandelbrot.png")
 
-    def test_effect_mandelbrot_bad_arguments(self):
+    def test_effect_mandelbrot_bad_arguments(self) -> None:
         # Arrange
         size = (512, 512)
         # Get coordinates the wrong way round:
@@ -458,7 +493,7 @@ class TestImage:
         with pytest.raises(ValueError):
             Image.effect_mandelbrot(size, extent, quality)
 
-    def test_effect_noise(self):
+    def test_effect_noise(self) -> None:
         # Arrange
         size = (100, 100)
         sigma = 128
@@ -476,7 +511,7 @@ class TestImage:
         p4 = im.getpixel((0, 4))
         assert_not_all_same([p0, p1, p2, p3, p4])
 
-    def test_effect_spread(self):
+    def test_effect_spread(self) -> None:
         # Arrange
         im = hopper()
         distance = 10
@@ -488,7 +523,7 @@ class TestImage:
         assert im.size == (128, 128)
         assert_image_similar_tofile(im2, "Tests/images/effect_spread.png", 110)
 
-    def test_effect_spread_zero(self):
+    def test_effect_spread_zero(self) -> None:
         # Arrange
         im = hopper()
         distance = 0
@@ -499,12 +534,14 @@ class TestImage:
         # Assert
         assert_image_equal(im, im2)
 
-    def test_check_size(self):
+    def test_check_size(self) -> None:
         # Checking that the _check_size function throws value errors when we want it to
         with pytest.raises(ValueError):
-            Image.new("RGB", 0)  # not a tuple
+            # not a tuple
+            Image.new("RGB", 0)  # type: ignore[arg-type]
         with pytest.raises(ValueError):
-            Image.new("RGB", (0,))  # Tuple too short
+            # tuple too short
+            Image.new("RGB", (0,))  # type: ignore[arg-type]
         with pytest.raises(ValueError):
             Image.new("RGB", (-1, -1))  # w,h < 0
 
@@ -528,10 +565,10 @@ class TestImage:
         "PILLOW_VALGRIND_TEST" in os.environ, reason="Valgrind is slower"
     )
     @pytest.mark.parametrize("size", ((0, 100000000), (100000000, 0)))
-    def test_empty_image(self, size):
+    def test_empty_image(self, size: tuple[int, int]) -> None:
         Image.new("RGB", size)
 
-    def test_storage_neg(self):
+    def test_storage_neg(self) -> None:
         # Storage.c accepted negative values for xsize, ysize.  Was
         # test_neg_ppm, but the core function for that has been
         # removed Calling directly into core to test the error in
@@ -540,13 +577,14 @@ class TestImage:
         with pytest.raises(ValueError):
             Image.core.fill("RGB", (2, -2), (0, 0, 0))
 
-    def test_one_item_tuple(self):
+    def test_one_item_tuple(self) -> None:
         for mode in ("I", "F", "L"):
             im = Image.new(mode, (100, 100), (5,))
             px = im.load()
+            assert px is not None
             assert px[0, 0] == 5
 
-    def test_linear_gradient_wrong_mode(self):
+    def test_linear_gradient_wrong_mode(self) -> None:
         # Arrange
         wrong_mode = "RGB"
 
@@ -555,7 +593,7 @@ class TestImage:
             Image.linear_gradient(wrong_mode)
 
     @pytest.mark.parametrize("mode", ("L", "P", "I", "F"))
-    def test_linear_gradient(self, mode):
+    def test_linear_gradient(self, mode: str) -> None:
         # Arrange
         target_file = "Tests/images/linear_gradient.png"
 
@@ -571,7 +609,7 @@ class TestImage:
             target = target.convert(mode)
         assert_image_equal(im, target)
 
-    def test_radial_gradient_wrong_mode(self):
+    def test_radial_gradient_wrong_mode(self) -> None:
         # Arrange
         wrong_mode = "RGB"
 
@@ -580,7 +618,7 @@ class TestImage:
             Image.radial_gradient(wrong_mode)
 
     @pytest.mark.parametrize("mode", ("L", "P", "I", "F"))
-    def test_radial_gradient(self, mode):
+    def test_radial_gradient(self, mode: str) -> None:
         # Arrange
         target_file = "Tests/images/radial_gradient.png"
 
@@ -596,7 +634,7 @@ class TestImage:
             target = target.convert(mode)
         assert_image_equal(im, target)
 
-    def test_register_extensions(self):
+    def test_register_extensions(self) -> None:
         test_format = "a"
         exts = ["b", "c"]
         for ext in exts:
@@ -612,7 +650,7 @@ class TestImage:
 
         assert ext_individual == ext_multiple
 
-    def test_remap_palette(self):
+    def test_remap_palette(self) -> None:
         # Test identity transform
         with Image.open("Tests/images/hopper.gif") as im:
             assert_image_equal(im, im.remap_palette(list(range(256))))
@@ -631,14 +669,16 @@ class TestImage:
             with pytest.raises(ValueError):
                 im.remap_palette(None)
 
-    def test_remap_palette_transparency(self):
-        im = Image.new("P", (1, 2))
-        im.putpixel((0, 1), 1)
+    def test_remap_palette_transparency(self) -> None:
+        im = Image.new("P", (1, 2), (0, 0, 0))
+        im.putpixel((0, 1), (255, 0, 0))
         im.info["transparency"] = 0
 
         im_remapped = im.remap_palette([1, 0])
         assert im_remapped.info["transparency"] == 1
-        assert len(im_remapped.getpalette()) == 6
+        palette = im_remapped.getpalette()
+        assert palette is not None
+        assert len(palette) == 6
 
         # Test unused transparency
         im.info["transparency"] = 2
@@ -646,7 +686,7 @@ class TestImage:
         im_remapped = im.remap_palette([1, 0])
         assert "transparency" not in im_remapped.info
 
-    def test__new(self):
+    def test__new(self) -> None:
         im = hopper("RGB")
         im_p = hopper("P")
 
@@ -655,32 +695,40 @@ class TestImage:
         blank_p.palette = None
         blank_pa.palette = None
 
-        def _make_new(base_image, im, palette_result=None):
-            new_im = base_image._new(im)
-            assert new_im.mode == im.mode
-            assert new_im.size == im.size
-            assert new_im.info == base_image.info
+        def _make_new(
+            base_image: Image.Image,
+            image: Image.Image,
+            palette_result: ImagePalette.ImagePalette | None = None,
+        ) -> None:
+            new_image = base_image._new(image.im)
+            assert new_image.mode == image.mode
+            assert new_image.size == image.size
+            assert new_image.info == base_image.info
             if palette_result is not None:
-                assert new_im.palette.tobytes() == palette_result.tobytes()
+                assert new_image.palette is not None
+                assert new_image.palette.tobytes() == palette_result.tobytes()
             else:
-                assert new_im.palette is None
+                assert new_image.palette is None
 
-        _make_new(im, im_p, ImagePalette.ImagePalette(list(range(256)) * 3))
+        _make_new(im, im_p, ImagePalette.ImagePalette("RGB"))
         _make_new(im_p, im, None)
         _make_new(im, blank_p, ImagePalette.ImagePalette())
         _make_new(im, blank_pa, ImagePalette.ImagePalette())
 
-    def test_p_from_rgb_rgba(self):
-        for mode, color in [
+    @pytest.mark.parametrize(
+        "mode, color",
+        (
             ("RGB", "#DDEEFF"),
             ("RGB", (221, 238, 255)),
             ("RGBA", (221, 238, 255, 255)),
-        ]:
-            im = Image.new("P", (100, 100), color)
-            expected = Image.new(mode, (100, 100), color)
-            assert_image_equal(im.convert(mode), expected)
+        ),
+    )
+    def test_p_from_rgb_rgba(self, mode: str, color: str | tuple[int, ...]) -> None:
+        im = Image.new("P", (100, 100), color)
+        expected = Image.new(mode, (100, 100), color)
+        assert_image_equal(im.convert(mode), expected)
 
-    def test_no_resource_warning_on_save(self, tmp_path):
+    def test_no_resource_warning_on_save(self, tmp_path: Path) -> None:
         # https://github.com/python-pillow/Pillow/issues/835
         # Arrange
         test_file = "Tests/images/hopper.png"
@@ -689,9 +737,11 @@ class TestImage:
         # Act/Assert
         with Image.open(test_file) as im:
             with warnings.catch_warnings():
+                warnings.simplefilter("error")
+
                 im.save(temp_file)
 
-    def test_no_new_file_on_error(self, tmp_path):
+    def test_no_new_file_on_error(self, tmp_path: Path) -> None:
         temp_file = str(tmp_path / "temp.jpg")
 
         im = Image.new("RGB", (0, 0))
@@ -700,10 +750,10 @@ class TestImage:
 
         assert not os.path.exists(temp_file)
 
-    def test_load_on_nonexclusive_multiframe(self):
+    def test_load_on_nonexclusive_multiframe(self) -> None:
         with open("Tests/images/frozenpond.mpo", "rb") as fp:
 
-            def act(fp):
+            def act(fp: IO[bytes]) -> None:
                 im = Image.open(fp)
                 im.load()
 
@@ -714,7 +764,7 @@ class TestImage:
 
             assert not fp.closed
 
-    def test_empty_exif(self):
+    def test_empty_exif(self) -> None:
         with Image.open("Tests/images/exif.png") as im:
             exif = im.getexif()
         assert dict(exif)
@@ -727,10 +777,26 @@ class TestImage:
         exif.load(b"Exif\x00\x00")
         assert not dict(exif)
 
+    def test_duplicate_exif_header(self) -> None:
+        with Image.open("Tests/images/exif.png") as im:
+            im.load()
+            im.info["exif"] = b"Exif\x00\x00" + im.info["exif"]
+
+            exif = im.getexif()
+        assert exif[274] == 1
+
+    def test_empty_get_ifd(self) -> None:
+        exif = Image.Exif()
+        ifd = exif.get_ifd(0x8769)
+        assert ifd == {}
+
+        ifd[36864] = b"0220"
+        assert exif.get_ifd(0x8769) == {36864: b"0220"}
+
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )
-    def test_exif_jpeg(self, tmp_path):
+    def test_exif_jpeg(self, tmp_path: Path) -> None:
         with Image.open("Tests/images/exif-72dpi-int.jpg") as im:  # Little endian
             exif = im.getexif()
             assert 258 not in exif
@@ -775,8 +841,7 @@ class TestImage:
             assert reloaded_exif[305] == "Pillow test"
 
     @skip_unless_feature("webp")
-    @skip_unless_feature("webp_anim")
-    def test_exif_webp(self, tmp_path):
+    def test_exif_webp(self, tmp_path: Path) -> None:
         with Image.open("Tests/images/hopper.webp") as im:
             exif = im.getexif()
             assert exif == {}
@@ -786,7 +851,7 @@ class TestImage:
             exif[40963] = 455
             exif[305] = "Pillow test"
 
-            def check_exif():
+            def check_exif() -> None:
                 with Image.open(out) as reloaded:
                     reloaded_exif = reloaded.getexif()
                     assert reloaded_exif[258] == 8
@@ -798,7 +863,7 @@ class TestImage:
             im.save(out, exif=exif, save_all=True)
             check_exif()
 
-    def test_exif_png(self, tmp_path):
+    def test_exif_png(self, tmp_path: Path) -> None:
         with Image.open("Tests/images/exif.png") as im:
             exif = im.getexif()
             assert exif == {274: 1}
@@ -814,7 +879,7 @@ class TestImage:
             reloaded_exif = reloaded.getexif()
             assert reloaded_exif == {258: 8, 40963: 455, 305: "Pillow test"}
 
-    def test_exif_interop(self):
+    def test_exif_interop(self) -> None:
         with Image.open("Tests/images/flower.jpg") as im:
             exif = im.getexif()
             assert exif.get_ifd(0xA005) == {
@@ -828,7 +893,7 @@ class TestImage:
             reloaded_exif.load(exif.tobytes())
             assert reloaded_exif.get_ifd(0xA005) == exif.get_ifd(0xA005)
 
-    def test_exif_ifd1(self):
+    def test_exif_ifd1(self) -> None:
         with Image.open("Tests/images/flower.jpg") as im:
             exif = im.getexif()
             assert exif.get_ifd(ExifTags.IFD.IFD1) == {
@@ -840,7 +905,7 @@ class TestImage:
                 283: 180.0,
             }
 
-    def test_exif_ifd(self):
+    def test_exif_ifd(self) -> None:
         with Image.open("Tests/images/flower.jpg") as im:
             exif = im.getexif()
         del exif.get_ifd(0x8769)[0xA005]
@@ -849,7 +914,7 @@ class TestImage:
         reloaded_exif.load(exif.tobytes())
         assert reloaded_exif.get_ifd(0x8769) == exif.get_ifd(0x8769)
 
-    def test_exif_load_from_fp(self):
+    def test_exif_load_from_fp(self) -> None:
         with Image.open("Tests/images/flower.jpg") as im:
             data = im.info["exif"]
             if data.startswith(b"Exif\x00\x00"):
@@ -870,7 +935,7 @@ class TestImage:
                 34665: 196,
             }
 
-    def test_exif_hide_offsets(self):
+    def test_exif_hide_offsets(self) -> None:
         with Image.open("Tests/images/flower.jpg") as im:
             exif = im.getexif()
 
@@ -895,14 +960,75 @@ class TestImage:
                     assert tag not in exif.get_ifd(0x8769)
                 assert exif.get_ifd(0xA005)
 
+    def test_empty_xmp(self) -> None:
+        with Image.open("Tests/images/hopper.gif") as im:
+            if ElementTree is None:
+                with pytest.warns(
+                    UserWarning,
+                    match="XMP data cannot be read without defusedxml dependency",
+                ):
+                    xmp = im.getxmp()
+            else:
+                xmp = im.getxmp()
+            assert xmp == {}
+
+    def test_getxmp_padded(self) -> None:
+        im = Image.new("RGB", (1, 1))
+        im.info["xmp"] = (
+            b'<?xpacket begin="\xef\xbb\xbf" id="W5M0MpCehiHzreSzNTczkc9d"?>\n'
+            b'<x:xmpmeta xmlns:x="adobe:ns:meta/" />\n<?xpacket end="w"?>\x00\x00'
+        )
+        if ElementTree is None:
+            with pytest.warns(
+                UserWarning,
+                match="XMP data cannot be read without defusedxml dependency",
+            ):
+                assert im.getxmp() == {}
+        else:
+            assert im.getxmp() == {"xmpmeta": None}
+
     @pytest.mark.parametrize("size", ((1, 0), (0, 1), (0, 0)))
-    def test_zero_tobytes(self, size):
+    def test_zero_tobytes(self, size: tuple[int, int]) -> None:
         im = Image.new("RGB", size)
         assert im.tobytes() == b""
 
-    def test_apply_transparency(self):
+    @pytest.mark.parametrize("size", ((1, 0), (0, 1), (0, 0)))
+    def test_zero_frombytes(self, size: tuple[int, int]) -> None:
+        Image.frombytes("RGB", size, b"")
+
+        im = Image.new("RGB", size)
+        im.frombytes(b"")
+
+    def test_has_transparency_data(self) -> None:
+        for mode in ("1", "L", "P", "RGB"):
+            im = Image.new(mode, (1, 1))
+            assert not im.has_transparency_data
+
+        for mode in ("LA", "La", "PA", "RGBA", "RGBa"):
+            im = Image.new(mode, (1, 1))
+            assert im.has_transparency_data
+
+        # P mode with "transparency" info
+        with Image.open("Tests/images/first_frame_transparency.gif") as im:
+            assert "transparency" in im.info
+            assert im.has_transparency_data
+
+        # RGB mode with "transparency" info
+        with Image.open("Tests/images/rgb_trns.png") as im:
+            assert "transparency" in im.info
+            assert im.has_transparency_data
+
+        # P mode with RGBA palette
+        im = Image.new("RGBA", (1, 1)).convert("P")
+        assert im.mode == "P"
+        assert im.palette is not None
+        assert im.palette.mode == "RGBA"
+        assert im.has_transparency_data
+
+    def test_apply_transparency(self) -> None:
         im = Image.new("P", (1, 1))
         im.putpalette((0, 0, 0, 1, 1, 1))
+        assert im.palette is not None
         assert im.palette.colors == {(0, 0, 0): 0, (1, 1, 1): 1}
 
         # Test that no transformation is applied without transparency
@@ -920,16 +1046,19 @@ class TestImage:
         im.putpalette((0, 0, 0, 255, 1, 1, 1, 128), "RGBA")
         im.info["transparency"] = 0
         im.apply_transparency()
+        assert im.palette is not None
         assert im.palette.colors == {(0, 0, 0, 0): 0, (1, 1, 1, 128): 1}
 
         # Test that transparency bytes are applied
         with Image.open("Tests/images/pil123p.png") as im:
             assert isinstance(im.info["transparency"], bytes)
+            assert im.palette is not None
             assert im.palette.colors[(27, 35, 6)] == 24
             im.apply_transparency()
+            assert im.palette is not None
             assert im.palette.colors[(27, 35, 6, 214)] == 24
 
-    def test_constants(self):
+    def test_constants(self) -> None:
         for enum in (
             Image.Transpose,
             Image.Transform,
@@ -954,49 +1083,89 @@ class TestImage:
             "01r_00.pcx",
         ],
     )
-    def test_overrun(self, path):
+    def test_overrun(self, path: str) -> None:
         """For overrun completeness, test as:
         valgrind pytest -qq Tests/test_image.py::TestImage::test_overrun | grep decode.c
         """
         with Image.open(os.path.join("Tests/images", path)) as im:
-            try:
+            with pytest.raises(OSError) as e:
                 im.load()
-                assert False
-            except OSError as e:
-                buffer_overrun = str(e) == "buffer overrun when reading image file"
-                truncated = "image file is truncated" in str(e)
+        buffer_overrun = str(e.value) == "buffer overrun when reading image file"
+        truncated = "image file is truncated" in str(e.value)
 
-                assert buffer_overrun or truncated
+        assert buffer_overrun or truncated
 
-    def test_fli_overrun2(self):
+    def test_fli_overrun2(self) -> None:
         with Image.open("Tests/images/fli_overrun2.bin") as im:
-            try:
+            with pytest.raises(OSError, match="buffer overrun when reading image file"):
                 im.seek(1)
-                assert False
-            except OSError as e:
-                assert str(e) == "buffer overrun when reading image file"
+
+    def test_exit_fp(self) -> None:
+        with Image.new("L", (1, 1)) as im:
+            pass
+        assert not hasattr(im, "fp")
+
+    def test_close_graceful(self, caplog: pytest.LogCaptureFixture) -> None:
+        with Image.open("Tests/images/hopper.jpg") as im:
+            copy = im.copy()
+            with caplog.at_level(logging.DEBUG):
+                im.close()
+                copy.close()
+            assert len(caplog.records) == 0
+            assert im.fp is None
+
+    def test_deprecation(self) -> None:
+        with pytest.warns(DeprecationWarning):
+            assert not Image.isImageType(None)
 
 
-class MockEncoder:
+class TestImageBytes:
+    @pytest.mark.parametrize("mode", Image.MODES + ["BGR;15", "BGR;16", "BGR;24"])
+    def test_roundtrip_bytes_constructor(self, mode: str) -> None:
+        im = hopper(mode)
+        source_bytes = im.tobytes()
+
+        if mode.startswith("BGR;"):
+            with pytest.warns(DeprecationWarning):
+                reloaded = Image.frombytes(mode, im.size, source_bytes)
+        else:
+            reloaded = Image.frombytes(mode, im.size, source_bytes)
+        assert reloaded.tobytes() == source_bytes
+
+    @pytest.mark.parametrize("mode", Image.MODES + ["BGR;15", "BGR;16", "BGR;24"])
+    def test_roundtrip_bytes_method(self, mode: str) -> None:
+        im = hopper(mode)
+        source_bytes = im.tobytes()
+
+        reloaded = helper_image_new(mode, im.size)
+        reloaded.frombytes(source_bytes)
+        assert reloaded.tobytes() == source_bytes
+
+    @pytest.mark.parametrize("mode", Image.MODES + ["BGR;15", "BGR;16", "BGR;24"])
+    def test_getdata_putdata(self, mode: str) -> None:
+        if is_big_endian() and mode == "BGR;15":
+            pytest.xfail("Known failure of BGR;15 on big-endian")
+        im = hopper(mode)
+        reloaded = helper_image_new(mode, im.size)
+        reloaded.putdata(im.getdata())
+        assert_image_equal(im, reloaded)
+
+
+class MockEncoder(ImageFile.PyEncoder):
     pass
 
 
-def mock_encode(*args):
-    encoder = MockEncoder()
-    encoder.args = args
-    return encoder
-
-
 class TestRegistry:
-    def test_encode_registry(self):
-        Image.register_encoder("MOCK", mock_encode)
+    def test_encode_registry(self) -> None:
+        Image.register_encoder("MOCK", MockEncoder)
         assert "MOCK" in Image.ENCODERS
 
         enc = Image._getencoder("RGB", "MOCK", ("args",), extra=("extra",))
 
         assert isinstance(enc, MockEncoder)
-        assert enc.args == ("RGB", "args", "extra")
+        assert enc.mode == "RGB"
+        assert enc.args == ("args", "extra")
 
-    def test_encode_registry_fail(self):
+    def test_encode_registry_fail(self) -> None:
         with pytest.raises(OSError):
             Image._getencoder("RGB", "DoesNotExist", ("args",), extra=("extra",))
diff --git a/Tests/test_image_access.py b/Tests/test_image_access.py
index af229d1a7..bb30b462d 100644
--- a/Tests/test_image_access.py
+++ b/Tests/test_image_access.py
@@ -1,7 +1,10 @@
+from __future__ import annotations
+
 import os
 import subprocess
 import sys
 import sysconfig
+from types import ModuleType
 
 import pytest
 
@@ -9,47 +12,24 @@ from PIL import Image
 
 from .helper import assert_image_equal, hopper, is_win32
 
-# CFFI imports pycparser which doesn't support PYTHONOPTIMIZE=2
-# https://github.com/eliben/pycparser/pull/198#issuecomment-317001670
-if os.environ.get("PYTHONOPTIMIZE") == "2":
-    cffi = None
-else:
-    try:
-        import cffi
-
-        from PIL import PyAccess
-    except ImportError:
-        cffi = None
-
+numpy: ModuleType | None
 try:
     import numpy
 except ImportError:
     numpy = None
 
 
-class AccessTest:
-    # initial value
-    _init_cffi_access = Image.USE_CFFI_ACCESS
-    _need_cffi_access = False
-
-    @classmethod
-    def setup_class(cls):
-        Image.USE_CFFI_ACCESS = cls._need_cffi_access
-
-    @classmethod
-    def teardown_class(cls):
-        Image.USE_CFFI_ACCESS = cls._init_cffi_access
-
-
-class TestImagePutPixel(AccessTest):
-    def test_sanity(self):
+class TestImagePutPixel:
+    def test_sanity(self) -> None:
         im1 = hopper()
         im2 = Image.new(im1.mode, im1.size, 0)
 
         for y in range(im1.size[1]):
             for x in range(im1.size[0]):
                 pos = x, y
-                im2.putpixel(pos, im1.getpixel(pos))
+                value = im1.getpixel(pos)
+                assert value is not None
+                im2.putpixel(pos, value)
 
         assert_image_equal(im1, im2)
 
@@ -59,7 +39,9 @@ class TestImagePutPixel(AccessTest):
         for y in range(im1.size[1]):
             for x in range(im1.size[0]):
                 pos = x, y
-                im2.putpixel(pos, im1.getpixel(pos))
+                value = im1.getpixel(pos)
+                assert value is not None
+                im2.putpixel(pos, value)
 
         assert not im2.readonly
         assert_image_equal(im1, im2)
@@ -69,9 +51,12 @@ class TestImagePutPixel(AccessTest):
         pix1 = im1.load()
         pix2 = im2.load()
 
-        for x, y in ((0, "0"), ("0", 0)):
-            with pytest.raises(TypeError):
-                pix1[x, y]
+        assert pix1 is not None
+        assert pix2 is not None
+        with pytest.raises(TypeError):
+            pix1[0, "0"]  # type: ignore[index]
+        with pytest.raises(TypeError):
+            pix1["0", 0]  # type: ignore[index]
 
         for y in range(im1.size[1]):
             for x in range(im1.size[0]):
@@ -79,7 +64,7 @@ class TestImagePutPixel(AccessTest):
 
         assert_image_equal(im1, im2)
 
-    def test_sanity_negative_index(self):
+    def test_sanity_negative_index(self) -> None:
         im1 = hopper()
         im2 = Image.new(im1.mode, im1.size, 0)
 
@@ -90,7 +75,9 @@ class TestImagePutPixel(AccessTest):
         for y in range(-1, -im1.size[1] - 1, -1):
             for x in range(-1, -im1.size[0] - 1, -1):
                 pos = x, y
-                im2.putpixel(pos, im1.getpixel(pos))
+                value = im1.getpixel(pos)
+                assert value is not None
+                im2.putpixel(pos, value)
 
         assert_image_equal(im1, im2)
 
@@ -100,7 +87,9 @@ class TestImagePutPixel(AccessTest):
         for y in range(-1, -im1.size[1] - 1, -1):
             for x in range(-1, -im1.size[0] - 1, -1):
                 pos = x, y
-                im2.putpixel(pos, im1.getpixel(pos))
+                value = im1.getpixel(pos)
+                assert value is not None
+                im2.putpixel(pos, value)
 
         assert not im2.readonly
         assert_image_equal(im1, im2)
@@ -110,6 +99,8 @@ class TestImagePutPixel(AccessTest):
         pix1 = im1.load()
         pix2 = im2.load()
 
+        assert pix1 is not None
+        assert pix2 is not None
         for y in range(-1, -im1.size[1] - 1, -1):
             for x in range(-1, -im1.size[0] - 1, -1):
                 pix2[x, y] = pix1[x, y]
@@ -117,26 +108,33 @@ class TestImagePutPixel(AccessTest):
         assert_image_equal(im1, im2)
 
     @pytest.mark.skipif(numpy is None, reason="NumPy not installed")
-    def test_numpy(self):
+    def test_numpy(self) -> None:
         im = hopper()
-        pix = im.load()
+        px = im.load()
 
-        assert pix[numpy.int32(1), numpy.int32(2)] == (18, 20, 59)
+        assert px is not None
+        assert numpy is not None
+        assert px[numpy.int32(1), numpy.int32(2)] == (18, 20, 59)
 
 
-class TestImageGetPixel(AccessTest):
+class TestImageGetPixel:
     @staticmethod
-    def color(mode):
+    def color(mode: str) -> int | tuple[int, ...]:
         bands = Image.getmodebands(mode)
         if bands == 1:
             return 1
+        if mode in ("BGR;15", "BGR;16"):
+            # These modes have less than 8 bits per band,
+            # so (1, 2, 3) cannot be roundtripped.
+            return (16, 32, 49)
         return tuple(range(1, bands + 1))
 
-    def check(self, mode, expected_color=None):
-        if not expected_color:
-            expected_color = self.color(mode)
+    def check(self, mode: str, expected_color_int: int | None = None) -> None:
+        expected_color = (
+            self.color(mode) if expected_color_int is None else expected_color_int
+        )
 
-        # check putpixel
+        # Check putpixel
         im = Image.new(mode, (1, 1), None)
         im.putpixel((0, 0), expected_color)
         actual_color = im.getpixel((0, 0))
@@ -145,7 +143,7 @@ class TestImageGetPixel(AccessTest):
             f"expected {expected_color} got {actual_color}"
         )
 
-        # check putpixel negative index
+        # Check putpixel negative index
         im.putpixel((-1, -1), expected_color)
         actual_color = im.getpixel((-1, -1))
         assert actual_color == expected_color, (
@@ -153,22 +151,20 @@ class TestImageGetPixel(AccessTest):
             f"expected {expected_color} got {actual_color}"
         )
 
-        # Check 0
+        # Check 0x0 image with None initial color
         im = Image.new(mode, (0, 0), None)
         assert im.load() is not None
-
-        error = ValueError if self._need_cffi_access else IndexError
-        with pytest.raises(error):
+        with pytest.raises(IndexError):
             im.putpixel((0, 0), expected_color)
-        with pytest.raises(error):
+        with pytest.raises(IndexError):
             im.getpixel((0, 0))
-        # Check 0 negative index
-        with pytest.raises(error):
+        # Check negative index
+        with pytest.raises(IndexError):
             im.putpixel((-1, -1), expected_color)
-        with pytest.raises(error):
+        with pytest.raises(IndexError):
             im.getpixel((-1, -1))
 
-        # check initial color
+        # Check initial color
         im = Image.new(mode, (1, 1), expected_color)
         actual_color = im.getpixel((0, 0))
         assert actual_color == expected_color, (
@@ -176,55 +172,44 @@ class TestImageGetPixel(AccessTest):
             f"expected {expected_color} got {actual_color}"
         )
 
-        # check initial color negative index
+        # Check initial color negative index
         actual_color = im.getpixel((-1, -1))
         assert actual_color == expected_color, (
             f"initial color failed with negative index for mode {mode}, "
             f"expected {expected_color} got {actual_color}"
         )
 
-        # Check 0
+        # Check 0x0 image with initial color
         im = Image.new(mode, (0, 0), expected_color)
-        with pytest.raises(error):
+        with pytest.raises(IndexError):
             im.getpixel((0, 0))
-        # Check 0 negative index
-        with pytest.raises(error):
+        # Check negative index
+        with pytest.raises(IndexError):
             im.getpixel((-1, -1))
 
-    @pytest.mark.parametrize(
-        "mode",
-        (
-            "1",
-            "L",
-            "LA",
-            "I",
-            "I;16",
-            "I;16B",
-            "F",
-            "P",
-            "PA",
-            "RGB",
-            "RGBA",
-            "RGBX",
-            "CMYK",
-            "YCbCr",
-        ),
-    )
-    def test_basic(self, mode):
+    @pytest.mark.parametrize("mode", Image.MODES)
+    def test_basic(self, mode: str) -> None:
         self.check(mode)
 
+    @pytest.mark.parametrize("mode", ("BGR;15", "BGR;16", "BGR;24"))
+    def test_deprecated(self, mode: str) -> None:
+        with pytest.warns(DeprecationWarning):
+            self.check(mode)
+
+    def test_list(self) -> None:
+        im = hopper()
+        assert im.getpixel([0, 0]) == (20, 20, 70)
+
     @pytest.mark.parametrize("mode", ("I;16", "I;16B"))
-    @pytest.mark.parametrize(
-        "expected_color", (2**15 - 1, 2**15, 2**15 + 1, 2**16 - 1)
-    )
-    def test_signedness(self, mode, expected_color):
-        # see https://github.com/python-pillow/Pillow/issues/452
+    @pytest.mark.parametrize("expected_color", (2**15 - 1, 2**15, 2**15 + 1, 2**16 - 1))
+    def test_signedness(self, mode: str, expected_color: int) -> None:
+        # See https://github.com/python-pillow/Pillow/issues/452
         # pixelaccess is using signed int* instead of uint*
         self.check(mode, expected_color)
 
     @pytest.mark.parametrize("mode", ("P", "PA"))
     @pytest.mark.parametrize("color", ((255, 0, 0), (255, 0, 0, 255)))
-    def test_p_putpixel_rgb_rgba(self, mode, color):
+    def test_p_putpixel_rgb_rgba(self, mode: str, color: tuple[int, ...]) -> None:
         im = Image.new(mode, (1, 1))
         im.putpixel((0, 0), color)
 
@@ -232,140 +217,20 @@ class TestImageGetPixel(AccessTest):
         assert im.convert("RGBA").getpixel((0, 0)) == (255, 0, 0, alpha)
 
 
-@pytest.mark.skipif(cffi is None, reason="No CFFI")
-class TestCffiPutPixel(TestImagePutPixel):
-    _need_cffi_access = True
-
-
-@pytest.mark.skipif(cffi is None, reason="No CFFI")
-class TestCffiGetPixel(TestImageGetPixel):
-    _need_cffi_access = True
-
-
-@pytest.mark.skipif(cffi is None, reason="No CFFI")
-class TestCffi(AccessTest):
-    _need_cffi_access = True
-
-    def _test_get_access(self, im):
-        """Do we get the same thing as the old pixel access
-
-        Using private interfaces, forcing a capi access and
-        a pyaccess for the same image"""
-        caccess = im.im.pixel_access(False)
-        access = PyAccess.new(im, False)
-
-        w, h = im.size
-        for x in range(0, w, 10):
-            for y in range(0, h, 10):
-                assert access[(x, y)] == caccess[(x, y)]
-
-        # Access an out-of-range pixel
-        with pytest.raises(ValueError):
-            access[(access.xsize + 1, access.ysize + 1)]
-
-    def test_get_vs_c(self):
-        rgb = hopper("RGB")
-        rgb.load()
-        self._test_get_access(rgb)
-        self._test_get_access(hopper("RGBA"))
-        self._test_get_access(hopper("L"))
-        self._test_get_access(hopper("LA"))
-        self._test_get_access(hopper("1"))
-        self._test_get_access(hopper("P"))
-        # self._test_get_access(hopper('PA')) # PA -- how do I make a PA image?
-        self._test_get_access(hopper("F"))
-
-        for mode in ("I;16", "I;16L", "I;16B", "I;16N", "I"):
-            im = Image.new(mode, (10, 10), 40000)
-            self._test_get_access(im)
-
-        # These don't actually appear to be modes that I can actually make,
-        # as unpack sets them directly into the I mode.
-        # im = Image.new('I;32L', (10, 10), -2**10)
-        # self._test_get_access(im)
-        # im = Image.new('I;32B', (10, 10), 2**10)
-        # self._test_get_access(im)
-
-    def _test_set_access(self, im, color):
-        """Are we writing the correct bits into the image?
-
-        Using private interfaces, forcing a capi access and
-        a pyaccess for the same image"""
-        caccess = im.im.pixel_access(False)
-        access = PyAccess.new(im, False)
-
-        w, h = im.size
-        for x in range(0, w, 10):
-            for y in range(0, h, 10):
-                access[(x, y)] = color
-                assert color == caccess[(x, y)]
-
-        # Attempt to set the value on a read-only image
-        access = PyAccess.new(im, True)
-        with pytest.raises(ValueError):
-            access[(0, 0)] = color
-
-    def test_set_vs_c(self):
-        rgb = hopper("RGB")
-        rgb.load()
-        self._test_set_access(rgb, (255, 128, 0))
-        self._test_set_access(hopper("RGBA"), (255, 192, 128, 0))
-        self._test_set_access(hopper("L"), 128)
-        self._test_set_access(hopper("LA"), (128, 128))
-        self._test_set_access(hopper("1"), 255)
-        self._test_set_access(hopper("P"), 128)
-        # self._test_set_access(i, (128, 128))  #PA  -- undone how to make
-        self._test_set_access(hopper("F"), 1024.0)
-
-        for mode in ("I;16", "I;16L", "I;16B", "I;16N", "I"):
-            im = Image.new(mode, (10, 10), 40000)
-            self._test_set_access(im, 45000)
-
-        # im = Image.new('I;32L', (10, 10), -(2**10))
-        # self._test_set_access(im, -(2**13)+1)
-        # im = Image.new('I;32B', (10, 10), 2**10)
-        # self._test_set_access(im, 2**13-1)
-
-    def test_not_implemented(self):
-        assert PyAccess.new(hopper("BGR;15")) is None
-
-    # ref https://github.com/python-pillow/Pillow/pull/2009
-    def test_reference_counting(self):
-        size = 10
-
-        for _ in range(10):
-            # Do not save references to the image, only to the access object
-            px = Image.new("L", (size, 1), 0).load()
-            for i in range(size):
-                # pixels can contain garbage if image is released
-                assert px[i, 0] == 0
-
-    @pytest.mark.parametrize("mode", ("P", "PA"))
-    def test_p_putpixel_rgb_rgba(self, mode):
-        for color in ((255, 0, 0), (255, 0, 0, 127 if mode == "PA" else 255)):
-            im = Image.new(mode, (1, 1))
-            access = PyAccess.new(im, False)
-            access.putpixel((0, 0), color)
-
-            if len(color) == 3:
-                color += (255,)
-            assert im.convert("RGBA").getpixel((0, 0)) == color
-
-
-class TestImagePutPixelError(AccessTest):
+class TestImagePutPixelError:
     IMAGE_MODES1 = ["LA", "RGB", "RGBA", "BGR;15"]
     IMAGE_MODES2 = ["L", "I", "I;16"]
     INVALID_TYPES = ["foo", 1.0, None]
 
     @pytest.mark.parametrize("mode", IMAGE_MODES1)
-    def test_putpixel_type_error1(self, mode):
+    def test_putpixel_type_error1(self, mode: str) -> None:
         im = hopper(mode)
         for v in self.INVALID_TYPES:
             with pytest.raises(TypeError, match="color must be int or tuple"):
-                im.putpixel((0, 0), v)
+                im.putpixel((0, 0), v)  # type: ignore[arg-type]
 
     @pytest.mark.parametrize(
-        ("mode", "band_numbers", "match"),
+        "mode, band_numbers, match",
         (
             ("L", (0, 2), "color must be int or single-element tuple"),
             ("LA", (0, 3), "color must be int, or tuple of one or two elements"),
@@ -381,23 +246,25 @@ class TestImagePutPixelError(AccessTest):
             ),
         ),
     )
-    def test_putpixel_invalid_number_of_bands(self, mode, band_numbers, match):
+    def test_putpixel_invalid_number_of_bands(
+        self, mode: str, band_numbers: tuple[int, ...], match: str
+    ) -> None:
         im = hopper(mode)
         for band_number in band_numbers:
             with pytest.raises(TypeError, match=match):
                 im.putpixel((0, 0), (0,) * band_number)
 
     @pytest.mark.parametrize("mode", IMAGE_MODES2)
-    def test_putpixel_type_error2(self, mode):
+    def test_putpixel_type_error2(self, mode: str) -> None:
         im = hopper(mode)
         for v in self.INVALID_TYPES:
             with pytest.raises(
                 TypeError, match="color must be int or single-element tuple"
             ):
-                im.putpixel((0, 0), v)
+                im.putpixel((0, 0), v)  # type: ignore[arg-type]
 
     @pytest.mark.parametrize("mode", IMAGE_MODES1 + IMAGE_MODES2)
-    def test_putpixel_overflow_error(self, mode):
+    def test_putpixel_overflow_error(self, mode: str) -> None:
         im = hopper(mode)
         with pytest.raises(OverflowError):
             im.putpixel((0, 0), 2**80)
@@ -406,19 +273,20 @@ class TestImagePutPixelError(AccessTest):
 class TestEmbeddable:
     @pytest.mark.xfail(reason="failing test")
     @pytest.mark.skipif(not is_win32(), reason="requires Windows")
-    def test_embeddable(self):
+    def test_embeddable(self) -> None:
         import ctypes
 
-        from setuptools.command.build_ext import new_compiler
+        from setuptools.command import build_ext
 
         with open("embed_pil.c", "w", encoding="utf-8") as fh:
+            home = sys.prefix.replace("\\", "\\\\")
             fh.write(
-                """
+                f"""
 #include "Python.h"
 
 int main(int argc, char* argv[])
-{
-    char *home = "%s";
+{{
+    char *home = "{home}";
     wchar_t *whome = Py_DecodeLocale(home, NULL);
     Py_SetPythonHome(whome);
 
@@ -433,12 +301,11 @@ int main(int argc, char* argv[])
     PyMem_RawFree(whome);
 
     return 0;
-}
+}}
         """
-                % sys.prefix.replace("\\", "\\\\")
             )
 
-        compiler = new_compiler()
+        compiler = getattr(build_ext, "new_compiler")()
         compiler.add_include_dir(sysconfig.get_config_var("INCLUDEPY"))
 
         libdir = sysconfig.get_config_var("LIBDIR") or sysconfig.get_config_var(
@@ -451,8 +318,8 @@ int main(int argc, char* argv[])
         env = os.environ.copy()
         env["PATH"] = sys.prefix + ";" + env["PATH"]
 
-        # do not display the Windows Error Reporting dialog
-        ctypes.windll.kernel32.SetErrorMode(0x0002)
+        # Do not display the Windows Error Reporting dialog
+        getattr(ctypes, "windll").kernel32.SetErrorMode(0x0002)
 
         process = subprocess.Popen(["embed_pil.exe"], env=env)
         process.communicate()
diff --git a/Tests/test_image_array.py b/Tests/test_image_array.py
index ae3518e44..eb2309e0f 100644
--- a/Tests/test_image_array.py
+++ b/Tests/test_image_array.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+from typing import TYPE_CHECKING, Any
+
 import pytest
 from packaging.version import parse as parse_version
 
@@ -9,15 +13,18 @@ numpy = pytest.importorskip("numpy", reason="NumPy not installed")
 
 im = hopper().resize((128, 100))
 
+if TYPE_CHECKING:
+    import numpy.typing as npt
 
-def test_toarray():
-    def test(mode):
+
+def test_toarray() -> None:
+    def test(mode: str) -> tuple[tuple[int, ...], str, int]:
         ai = numpy.array(im.convert(mode))
         return ai.shape, ai.dtype.str, ai.nbytes
 
-    def test_with_dtype(dtype):
+    def test_with_dtype(dtype: npt.DTypeLike) -> None:
         ai = numpy.array(im, dtype=dtype)
-        assert ai.dtype == dtype
+        assert ai.dtype.type is dtype
 
     # assert test("1") == ((100, 128), '|b1', 1600))
     assert test("L") == ((100, 128), "|u1", 12800)
@@ -40,22 +47,22 @@ def test_toarray():
             with pytest.raises(OSError):
                 numpy.array(im_truncated)
         else:
-            with pytest.warns(UserWarning):
+            with pytest.warns(DeprecationWarning):
                 numpy.array(im_truncated)
 
 
-def test_fromarray():
+def test_fromarray() -> None:
     class Wrapper:
         """Class with API matching Image.fromarray"""
 
-        def __init__(self, img, arr_params):
+        def __init__(self, img: Image.Image, arr_params: dict[str, Any]) -> None:
             self.img = img
             self.__array_interface__ = arr_params
 
-        def tobytes(self):
+        def tobytes(self) -> bytes:
             return self.img.tobytes()
 
-    def test(mode):
+    def test(mode: str) -> tuple[str, tuple[int, int], bool]:
         i = im.convert(mode)
         a = numpy.array(i)
         # Make wrapper instance for image, new array interface
@@ -82,12 +89,22 @@ def test_fromarray():
     assert test("RGBX") == ("RGBA", (128, 100), True)
 
     # Test mode is None with no "typestr" in the array interface
+    wrapped = Wrapper(hopper("L"), {"shape": (100, 128)})
     with pytest.raises(TypeError):
-        wrapped = Wrapper(test("L"), {"shape": (100, 128)})
         Image.fromarray(wrapped)
 
 
-def test_fromarray_palette():
+def test_fromarray_strides_without_tobytes() -> None:
+    class Wrapper:
+        def __init__(self, arr_params: dict[str, Any]) -> None:
+            self.__array_interface__ = arr_params
+
+    with pytest.raises(ValueError):
+        wrapped = Wrapper({"shape": (1, 1), "strides": (1, 1)})
+        Image.fromarray(wrapped, "L")
+
+
+def test_fromarray_palette() -> None:
     # Arrange
     i = im.convert("L")
     a = numpy.array(i)
@@ -96,4 +113,5 @@ def test_fromarray_palette():
     out = Image.fromarray(a, "P")
 
     # Assert that the Python and C palettes match
+    assert out.palette is not None
     assert len(out.palette.colors) == len(out.im.getpalette()) / 3
diff --git a/Tests/test_image_convert.py b/Tests/test_image_convert.py
index 01a182cf1..6a925975e 100644
--- a/Tests/test_image_convert.py
+++ b/Tests/test_image_convert.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+from pathlib import Path
+
 import pytest
 
 from PIL import Image
@@ -5,8 +9,8 @@ from PIL import Image
 from .helper import assert_image, assert_image_equal, assert_image_similar, hopper
 
 
-def test_sanity():
-    def convert(im, mode):
+def test_sanity() -> None:
+    def convert(im: Image.Image, mode: str) -> None:
         out = im.convert(mode)
         assert out.mode == mode
         assert out.size == im.size
@@ -38,13 +42,13 @@ def test_sanity():
             convert(im, output_mode)
 
 
-def test_unsupported_conversion():
+def test_unsupported_conversion() -> None:
     im = hopper()
     with pytest.raises(ValueError):
         im.convert("INVALID")
 
 
-def test_default():
+def test_default() -> None:
     im = hopper("P")
     assert im.mode == "P"
     converted_im = im.convert()
@@ -60,18 +64,18 @@ def test_default():
 # ref https://github.com/python-pillow/Pillow/issues/274
 
 
-def _test_float_conversion(im):
+def _test_float_conversion(im: Image.Image) -> None:
     orig = im.getpixel((5, 5))
     converted = im.convert("F").getpixel((5, 5))
     assert orig == converted
 
 
-def test_8bit():
+def test_8bit() -> None:
     with Image.open("Tests/images/hopper.jpg") as im:
         _test_float_conversion(im.convert("L"))
 
 
-def test_16bit():
+def test_16bit() -> None:
     with Image.open("Tests/images/16bit.cropped.tif") as im:
         _test_float_conversion(im)
 
@@ -81,19 +85,19 @@ def test_16bit():
         assert im_i16.getpixel((0, 0)) == 65535
 
 
-def test_16bit_workaround():
+def test_16bit_workaround() -> None:
     with Image.open("Tests/images/16bit.cropped.tif") as im:
         _test_float_conversion(im.convert("I"))
 
 
-def test_opaque():
+def test_opaque() -> None:
     alpha = hopper("P").convert("PA").getchannel("A")
 
     solid = Image.new("L", (128, 128), 255)
     assert_image_equal(alpha, solid)
 
 
-def test_rgba_p():
+def test_rgba_p() -> None:
     im = hopper("RGBA")
     im.putalpha(hopper("L"))
 
@@ -103,25 +107,25 @@ def test_rgba_p():
     assert_image_similar(im, comparable, 20)
 
 
-def test_rgba():
+def test_rgba() -> None:
     with Image.open("Tests/images/transparent.png") as im:
         assert im.mode == "RGBA"
 
         assert_image_similar(im.convert("RGBa").convert("RGB"), im.convert("RGB"), 1.5)
 
 
-def test_trns_p(tmp_path):
+def test_trns_p(tmp_path: Path) -> None:
     im = hopper("P")
     im.info["transparency"] = 0
 
     f = str(tmp_path / "temp.png")
 
     im_l = im.convert("L")
-    assert im_l.info["transparency"] == 1  # undone
+    assert im_l.info["transparency"] == 0
     im_l.save(f)
 
     im_rgb = im.convert("RGB")
-    assert im_rgb.info["transparency"] == (0, 1, 2)  # undone
+    assert im_rgb.info["transparency"] == (0, 0, 0)
     im_rgb.save(f)
 
 
@@ -129,7 +133,7 @@ def test_trns_p(tmp_path):
 
 
 @pytest.mark.parametrize("mode", ("LA", "PA", "RGBA"))
-def test_trns_p_transparency(mode):
+def test_trns_p_transparency(mode: str) -> None:
     # Arrange
     im = hopper("P")
     im.info["transparency"] = 128
@@ -146,7 +150,7 @@ def test_trns_p_transparency(mode):
         assert converted_im.palette is None
 
 
-def test_trns_l(tmp_path):
+def test_trns_l(tmp_path: Path) -> None:
     im = hopper("L")
     im.info["transparency"] = 128
 
@@ -169,7 +173,7 @@ def test_trns_l(tmp_path):
     im_p.save(f)
 
 
-def test_trns_RGB(tmp_path):
+def test_trns_RGB(tmp_path: Path) -> None:
     im = hopper("RGB")
     im.info["transparency"] = im.getpixel((0, 0))
 
@@ -179,6 +183,14 @@ def test_trns_RGB(tmp_path):
     assert im_l.info["transparency"] == im_l.getpixel((0, 0))  # undone
     im_l.save(f)
 
+    im_la = im.convert("LA")
+    assert "transparency" not in im_la.info
+    im_la.save(f)
+
+    im_la = im.convert("La")
+    assert "transparency" not in im_la.info
+    assert im_la.getpixel((0, 0)) == (0, 0)
+
     im_p = im.convert("P")
     assert "transparency" in im_p.info
     im_p.save(f)
@@ -187,6 +199,10 @@ def test_trns_RGB(tmp_path):
     assert "transparency" not in im_rgba.info
     im_rgba.save(f)
 
+    im_rgba = im.convert("RGBa")
+    assert "transparency" not in im_rgba.info
+    assert im_rgba.getpixel((0, 0)) == (0, 0, 0, 0)
+
     im_p = pytest.warns(UserWarning, im.convert, "P", palette=Image.Palette.ADAPTIVE)
     assert "transparency" not in im_p.info
     im_p.save(f)
@@ -199,20 +215,23 @@ def test_trns_RGB(tmp_path):
 
 
 @pytest.mark.parametrize("convert_mode", ("L", "LA", "I"))
-def test_l_macro_rounding(convert_mode):
+def test_l_macro_rounding(convert_mode: str) -> None:
     for mode in ("P", "PA"):
         im = Image.new(mode, (1, 1))
+        assert im.palette is not None
         im.palette.getcolor((0, 1, 2))
 
         converted_im = im.convert(convert_mode)
         px = converted_im.load()
+        assert px is not None
         converted_color = px[0, 0]
         if convert_mode == "LA":
+            assert isinstance(converted_color, tuple)
             converted_color = converted_color[0]
         assert converted_color == 1
 
 
-def test_gif_with_rgba_palette_to_p():
+def test_gif_with_rgba_palette_to_p() -> None:
     # See https://github.com/python-pillow/Pillow/issues/2433
     with Image.open("Tests/images/hopper.gif") as im:
         im.info["transparency"] = 255
@@ -224,7 +243,7 @@ def test_gif_with_rgba_palette_to_p():
     im_p.load()
 
 
-def test_p_la():
+def test_p_la() -> None:
     im = hopper("RGBA")
     alpha = hopper("L")
     im.putalpha(alpha)
@@ -234,7 +253,7 @@ def test_p_la():
     assert_image_similar(alpha, comparable, 5)
 
 
-def test_p2pa_alpha():
+def test_p2pa_alpha() -> None:
     with Image.open("Tests/images/tiny.png") as im:
         assert im.mode == "P"
 
@@ -248,13 +267,13 @@ def test_p2pa_alpha():
             assert im_a.getpixel((x, y)) == alpha
 
 
-def test_p2pa_palette():
+def test_p2pa_palette() -> None:
     with Image.open("Tests/images/tiny.png") as im:
         im_pa = im.convert("PA")
     assert im_pa.getpalette() == im.getpalette()
 
 
-def test_matrix_illegal_conversion():
+def test_matrix_illegal_conversion() -> None:
     # Arrange
     im = hopper("CMYK")
     # fmt: off
@@ -270,7 +289,7 @@ def test_matrix_illegal_conversion():
         im.convert(mode="CMYK", matrix=matrix)
 
 
-def test_matrix_wrong_mode():
+def test_matrix_wrong_mode() -> None:
     # Arrange
     im = hopper("L")
     # fmt: off
@@ -287,7 +306,7 @@ def test_matrix_wrong_mode():
 
 
 @pytest.mark.parametrize("mode", ("RGB", "L"))
-def test_matrix_xyz(mode):
+def test_matrix_xyz(mode: str) -> None:
     # Arrange
     im = hopper("RGB")
     im.info["transparency"] = (255, 0, 0)
@@ -315,7 +334,7 @@ def test_matrix_xyz(mode):
             assert converted_im.info["transparency"] == 105
 
 
-def test_matrix_identity():
+def test_matrix_identity() -> None:
     # Arrange
     im = hopper("RGB")
     # fmt: off
diff --git a/Tests/test_image_copy.py b/Tests/test_image_copy.py
index cd602fc76..a0b829cc5 100644
--- a/Tests/test_image_copy.py
+++ b/Tests/test_image_copy.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import copy
 
 import pytest
@@ -8,7 +10,7 @@ from .helper import hopper, skip_unless_feature
 
 
 @pytest.mark.parametrize("mode", ("1", "P", "L", "RGB", "I", "F"))
-def test_copy(mode):
+def test_copy(mode: str) -> None:
     cropped_coordinates = (10, 10, 20, 20)
     cropped_size = (10, 10)
 
@@ -37,7 +39,7 @@ def test_copy(mode):
     assert out.size == cropped_size
 
 
-def test_copy_zero():
+def test_copy_zero() -> None:
     im = Image.new("RGB", (0, 0))
     out = im.copy()
     assert out.mode == im.mode
@@ -45,7 +47,9 @@ def test_copy_zero():
 
 
 @skip_unless_feature("libtiff")
-def test_deepcopy():
+def test_deepcopy() -> None:
     with Image.open("Tests/images/g4_orientation_5.tif") as im:
+        assert im.size == (590, 88)
+
         out = copy.deepcopy(im)
     assert out.size == (590, 88)
diff --git a/Tests/test_image_crop.py b/Tests/test_image_crop.py
index daf8c8da1..07fec2e64 100644
--- a/Tests/test_image_crop.py
+++ b/Tests/test_image_crop.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image
@@ -6,7 +8,7 @@ from .helper import assert_image_equal, hopper
 
 
 @pytest.mark.parametrize("mode", ("1", "P", "L", "RGB", "I", "F"))
-def test_crop(mode):
+def test_crop(mode: str) -> None:
     im = hopper(mode)
     assert_image_equal(im.crop(), im)
 
@@ -15,8 +17,8 @@ def test_crop(mode):
     assert cropped.size == (50, 50)
 
 
-def test_wide_crop():
-    def crop(*bbox):
+def test_wide_crop() -> None:
+    def crop(bbox: tuple[int, int, int, int]) -> tuple[int, ...]:
         i = im.crop(bbox)
         h = i.histogram()
         while h and not h[-1]:
@@ -25,34 +27,34 @@ def test_wide_crop():
 
     im = Image.new("L", (100, 100), 1)
 
-    assert crop(0, 0, 100, 100) == (0, 10000)
-    assert crop(25, 25, 75, 75) == (0, 2500)
+    assert crop((0, 0, 100, 100)) == (0, 10000)
+    assert crop((25, 25, 75, 75)) == (0, 2500)
 
     # sides
-    assert crop(-25, 0, 25, 50) == (1250, 1250)
-    assert crop(0, -25, 50, 25) == (1250, 1250)
-    assert crop(75, 0, 125, 50) == (1250, 1250)
-    assert crop(0, 75, 50, 125) == (1250, 1250)
+    assert crop((-25, 0, 25, 50)) == (1250, 1250)
+    assert crop((0, -25, 50, 25)) == (1250, 1250)
+    assert crop((75, 0, 125, 50)) == (1250, 1250)
+    assert crop((0, 75, 50, 125)) == (1250, 1250)
 
-    assert crop(-25, 25, 125, 75) == (2500, 5000)
-    assert crop(25, -25, 75, 125) == (2500, 5000)
+    assert crop((-25, 25, 125, 75)) == (2500, 5000)
+    assert crop((25, -25, 75, 125)) == (2500, 5000)
 
     # corners
-    assert crop(-25, -25, 25, 25) == (1875, 625)
-    assert crop(75, -25, 125, 25) == (1875, 625)
-    assert crop(75, 75, 125, 125) == (1875, 625)
-    assert crop(-25, 75, 25, 125) == (1875, 625)
+    assert crop((-25, -25, 25, 25)) == (1875, 625)
+    assert crop((75, -25, 125, 25)) == (1875, 625)
+    assert crop((75, 75, 125, 125)) == (1875, 625)
+    assert crop((-25, 75, 25, 125)) == (1875, 625)
 
 
 @pytest.mark.parametrize("box", ((8, 2, 2, 8), (2, 8, 8, 2), (8, 8, 2, 2)))
-def test_negative_crop(box):
+def test_negative_crop(box: tuple[int, int, int, int]) -> None:
     im = Image.new("RGB", (10, 10))
 
     with pytest.raises(ValueError):
         im.crop(box)
 
 
-def test_crop_float():
+def test_crop_float() -> None:
     # Check cropping floats are rounded to nearest integer
     # https://github.com/python-pillow/Pillow/issues/1744
 
@@ -67,7 +69,7 @@ def test_crop_float():
     assert cropped.size == (3, 5)
 
 
-def test_crop_crash():
+def test_crop_crash() -> None:
     # Image.crop crashes prepatch with an access violation
     # apparently a use after free on Windows, see
     # https://github.com/python-pillow/Pillow/issues/1077
@@ -85,7 +87,7 @@ def test_crop_crash():
     img.load()
 
 
-def test_crop_zero():
+def test_crop_zero() -> None:
     im = Image.new("RGB", (0, 0), "white")
 
     cropped = im.crop((0, 0, 0, 0))
diff --git a/Tests/test_image_draft.py b/Tests/test_image_draft.py
index 8b4b44768..c9d8c93f3 100644
--- a/Tests/test_image_draft.py
+++ b/Tests/test_image_draft.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from PIL import Image
 
 from .helper import fromstring, skip_unless_feature, tostring
@@ -5,11 +7,18 @@ from .helper import fromstring, skip_unless_feature, tostring
 pytestmark = skip_unless_feature("jpg")
 
 
-def draft_roundtrip(in_mode, in_size, req_mode, req_size):
+def draft_roundtrip(
+    in_mode: str,
+    in_size: tuple[int, int],
+    req_mode: str | None,
+    req_size: tuple[int, int] | None,
+) -> Image.Image:
     im = Image.new(in_mode, in_size)
     data = tostring(im, "JPEG")
     im = fromstring(data)
-    mode, box = im.draft(req_mode, req_size)
+    result = im.draft(req_mode, req_size)
+    assert result is not None
+    box = result[1]
     scale, _ = im.decoderconfig
     assert box[:2] == (0, 0)
     assert (im.width - scale) < box[2] <= im.width
@@ -17,7 +26,7 @@ def draft_roundtrip(in_mode, in_size, req_mode, req_size):
     return im
 
 
-def test_size():
+def test_size() -> None:
     for in_size, req_size, out_size in [
         ((435, 361), (2048, 2048), (435, 361)),  # bigger
         ((435, 361), (435, 361), (435, 361)),  # same
@@ -46,7 +55,7 @@ def test_size():
         assert im.size == out_size
 
 
-def test_mode():
+def test_mode() -> None:
     for in_mode, req_mode, out_mode in [
         ("RGB", "1", "RGB"),
         ("RGB", "L", "L"),
@@ -66,7 +75,7 @@ def test_mode():
         assert im.mode == out_mode
 
 
-def test_several_drafts():
+def test_several_drafts() -> None:
     im = draft_roundtrip("L", (128, 128), None, (64, 64))
     im.draft(None, (64, 64))
     im.load()
diff --git a/Tests/test_image_entropy.py b/Tests/test_image_entropy.py
index ea5886e72..c1dbb879b 100644
--- a/Tests/test_image_entropy.py
+++ b/Tests/test_image_entropy.py
@@ -1,8 +1,10 @@
+from __future__ import annotations
+
 from .helper import hopper
 
 
-def test_entropy():
-    def entropy(mode):
+def test_entropy() -> None:
+    def entropy(mode: str) -> float:
         return hopper(mode).entropy()
 
     assert round(abs(entropy("1") - 0.9138803254693582), 7) == 0
diff --git a/Tests/test_image_filter.py b/Tests/test_image_filter.py
index 25b72298e..e566cd055 100644
--- a/Tests/test_image_filter.py
+++ b/Tests/test_image_filter.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, ImageFilter
@@ -23,32 +25,44 @@ from .helper import assert_image_equal, hopper
         ImageFilter.MinFilter,
         ImageFilter.ModeFilter,
         ImageFilter.GaussianBlur,
+        ImageFilter.GaussianBlur(0),
         ImageFilter.GaussianBlur(5),
+        ImageFilter.GaussianBlur((2, 5)),
         ImageFilter.BoxBlur(0),
         ImageFilter.BoxBlur(5),
+        ImageFilter.BoxBlur((2, 5)),
         ImageFilter.UnsharpMask,
         ImageFilter.UnsharpMask(10),
     ),
 )
-@pytest.mark.parametrize("mode", ("L", "I", "RGB", "CMYK"))
-def test_sanity(filter_to_apply, mode):
+@pytest.mark.parametrize(
+    "mode", ("L", "I", "I;16", "I;16L", "I;16B", "I;16N", "RGB", "CMYK")
+)
+def test_sanity(
+    filter_to_apply: ImageFilter.Filter | type[ImageFilter.Filter], mode: str
+) -> None:
     im = hopper(mode)
-    if mode != "I" or isinstance(filter_to_apply, ImageFilter.BuiltinFilter):
+    if mode[0] != "I" or (
+        callable(filter_to_apply)
+        and issubclass(filter_to_apply, ImageFilter.BuiltinFilter)
+    ):
         out = im.filter(filter_to_apply)
         assert out.mode == im.mode
         assert out.size == im.size
 
 
-@pytest.mark.parametrize("mode", ("L", "I", "RGB", "CMYK"))
-def test_sanity_error(mode):
+@pytest.mark.parametrize(
+    "mode", ("L", "I", "I;16", "I;16L", "I;16B", "I;16N", "RGB", "CMYK")
+)
+def test_sanity_error(mode: str) -> None:
+    im = hopper(mode)
     with pytest.raises(TypeError):
-        im = hopper(mode)
-        im.filter("hello")
+        im.filter("hello")  # type: ignore[arg-type]
 
 
 # crashes on small images
 @pytest.mark.parametrize("size", ((1, 1), (2, 2), (3, 3)))
-def test_crash(size):
+def test_crash(size: tuple[int, int]) -> None:
     im = Image.new("RGB", size)
     im.filter(ImageFilter.SMOOTH)
 
@@ -62,7 +76,10 @@ def test_crash(size):
         ("RGB", ((4, 0, 0), (0, 0, 0))),
     ),
 )
-def test_modefilter(mode, expected):
+def test_modefilter(
+    mode: str,
+    expected: tuple[int, int] | tuple[tuple[int, int, int], tuple[int, int, int]],
+) -> None:
     im = Image.new(mode, (3, 3), None)
     im.putdata(list(range(9)))
     # image is:
@@ -85,7 +102,13 @@ def test_modefilter(mode, expected):
         ("F", (0.0, 4.0, 8.0)),
     ),
 )
-def test_rankfilter(mode, expected):
+def test_rankfilter(
+    mode: str,
+    expected: (
+        tuple[float, float, float]
+        | tuple[tuple[int, int, int], tuple[int, int, int], tuple[int, int, int]]
+    ),
+) -> None:
     im = Image.new(mode, (3, 3), None)
     im.putdata(list(range(9)))
     # image is:
@@ -101,7 +124,7 @@ def test_rankfilter(mode, expected):
 @pytest.mark.parametrize(
     "filter", (ImageFilter.MinFilter, ImageFilter.MedianFilter, ImageFilter.MaxFilter)
 )
-def test_rankfilter_error(filter):
+def test_rankfilter_error(filter: ImageFilter.RankFilter) -> None:
     with pytest.raises(ValueError):
         im = Image.new("P", (3, 3), None)
         im.putdata(list(range(9)))
@@ -112,31 +135,31 @@ def test_rankfilter_error(filter):
         im.filter(filter).getpixel((1, 1))
 
 
-def test_rankfilter_properties():
+def test_rankfilter_properties() -> None:
     rankfilter = ImageFilter.RankFilter(1, 2)
 
     assert rankfilter.size == 1
     assert rankfilter.rank == 2
 
 
-def test_builtinfilter_p():
+def test_builtinfilter_p() -> None:
     builtin_filter = ImageFilter.BuiltinFilter()
 
     with pytest.raises(ValueError):
-        builtin_filter.filter(hopper("P"))
+        builtin_filter.filter(hopper("P").im)
 
 
-def test_kernel_not_enough_coefficients():
+def test_kernel_not_enough_coefficients() -> None:
     with pytest.raises(ValueError):
         ImageFilter.Kernel((3, 3), (0, 0))
 
 
-@pytest.mark.parametrize("mode", ("L", "LA", "I", "RGB", "CMYK"))
-def test_consistency_3x3(mode):
+@pytest.mark.parametrize(
+    "mode", ("L", "LA", "I", "I;16", "I;16L", "I;16B", "I;16N", "RGB", "CMYK")
+)
+def test_consistency_3x3(mode: str) -> None:
     with Image.open("Tests/images/hopper.bmp") as source:
-        reference_name = "hopper_emboss"
-        reference_name += "_I.png" if mode == "I" else ".bmp"
-        with Image.open("Tests/images/" + reference_name) as reference:
+        with Image.open("Tests/images/hopper_emboss.bmp") as reference:
             kernel = ImageFilter.Kernel(
                 (3, 3),
                 # fmt: off
@@ -146,23 +169,15 @@ def test_consistency_3x3(mode):
                 # fmt: on
                 0.3,
             )
-            source = source.split() * 2
-            reference = reference.split() * 2
-
-            if mode == "I":
-                source = source[0].convert(mode)
-            else:
-                source = Image.merge(mode, source[: len(mode)])
-            reference = Image.merge(mode, reference[: len(mode)])
             assert_image_equal(source.filter(kernel), reference)
 
 
-@pytest.mark.parametrize("mode", ("L", "LA", "I", "RGB", "CMYK"))
-def test_consistency_5x5(mode):
+@pytest.mark.parametrize(
+    "mode", ("L", "LA", "I", "I;16", "I;16L", "I;16B", "I;16N", "RGB", "CMYK")
+)
+def test_consistency_5x5(mode: str) -> None:
     with Image.open("Tests/images/hopper.bmp") as source:
-        reference_name = "hopper_emboss_more"
-        reference_name += "_I.png" if mode == "I" else ".bmp"
-        with Image.open("Tests/images/" + reference_name) as reference:
+        with Image.open("Tests/images/hopper_emboss_more.bmp") as reference:
             kernel = ImageFilter.Kernel(
                 (5, 5),
                 # fmt: off
@@ -174,23 +189,24 @@ def test_consistency_5x5(mode):
                 # fmt: on
                 0.3,
             )
-            source = source.split() * 2
-            reference = reference.split() * 2
-
-            if mode == "I":
-                source = source[0].convert(mode)
-            else:
-                source = Image.merge(mode, source[: len(mode)])
-            reference = Image.merge(mode, reference[: len(mode)])
             assert_image_equal(source.filter(kernel), reference)
 
 
-def test_invalid_box_blur_filter():
+@pytest.mark.parametrize(
+    "radius",
+    (
+        -2,
+        (-2, -2),
+        (-2, 2),
+        (2, -2),
+    ),
+)
+def test_invalid_box_blur_filter(radius: int | tuple[int, int]) -> None:
     with pytest.raises(ValueError):
-        ImageFilter.BoxBlur(-2)
+        ImageFilter.BoxBlur(radius)
 
     im = hopper()
     box_blur_filter = ImageFilter.BoxBlur(2)
-    box_blur_filter.radius = -2
+    box_blur_filter.radius = radius
     with pytest.raises(ValueError):
         im.filter(box_blur_filter)
diff --git a/Tests/test_image_frombytes.py b/Tests/test_image_frombytes.py
index c299e4544..98c0ea0b4 100644
--- a/Tests/test_image_frombytes.py
+++ b/Tests/test_image_frombytes.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image
@@ -6,7 +8,7 @@ from .helper import assert_image_equal, hopper
 
 
 @pytest.mark.parametrize("data_type", ("bytes", "memoryview"))
-def test_sanity(data_type):
+def test_sanity(data_type: str) -> None:
     im1 = hopper()
 
     data = im1.tobytes()
diff --git a/Tests/test_image_fromqimage.py b/Tests/test_image_fromqimage.py
index 7fe992353..1149e2964 100644
--- a/Tests/test_image_fromqimage.py
+++ b/Tests/test_image_fromqimage.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import warnings
 
 import pytest
@@ -14,22 +16,21 @@ pytestmark = pytest.mark.skipif(
     not ImageQt.qt_is_installed, reason="Qt bindings are not installed"
 )
 
-
-@pytest.fixture
-def test_images():
-    ims = [
-        hopper(),
-        Image.open("Tests/images/transparent.png"),
-        Image.open("Tests/images/7x13.png"),
-    ]
-    try:
-        yield ims
-    finally:
-        for im in ims:
-            im.close()
+ims: list[Image.Image] = []
 
 
-def roundtrip(expected):
+def setup_module() -> None:
+    ims.append(hopper())
+    ims.append(Image.open("Tests/images/transparent.png"))
+    ims.append(Image.open("Tests/images/7x13.png"))
+
+
+def teardown_module() -> None:
+    for im in ims:
+        im.close()
+
+
+def roundtrip(expected: Image.Image) -> None:
     # PIL -> Qt
     intermediate = expected.toqimage()
     # Qt -> PIL
@@ -41,26 +42,26 @@ def roundtrip(expected):
         assert_image_equal(result, expected.convert("RGB"))
 
 
-def test_sanity_1(test_images):
-    for im in test_images:
+def test_sanity_1() -> None:
+    for im in ims:
         roundtrip(im.convert("1"))
 
 
-def test_sanity_rgb(test_images):
-    for im in test_images:
+def test_sanity_rgb() -> None:
+    for im in ims:
         roundtrip(im.convert("RGB"))
 
 
-def test_sanity_rgba(test_images):
-    for im in test_images:
+def test_sanity_rgba() -> None:
+    for im in ims:
         roundtrip(im.convert("RGBA"))
 
 
-def test_sanity_l(test_images):
-    for im in test_images:
+def test_sanity_l() -> None:
+    for im in ims:
         roundtrip(im.convert("L"))
 
 
-def test_sanity_p(test_images):
-    for im in test_images:
+def test_sanity_p() -> None:
+    for im in ims:
         roundtrip(im.convert("P"))
diff --git a/Tests/test_image_getbands.py b/Tests/test_image_getbands.py
index 08fc12c1c..887553fc0 100644
--- a/Tests/test_image_getbands.py
+++ b/Tests/test_image_getbands.py
@@ -1,7 +1,9 @@
+from __future__ import annotations
+
 from PIL import Image
 
 
-def test_getbands():
+def test_getbands() -> None:
     assert Image.new("1", (1, 1)).getbands() == ("1",)
     assert Image.new("L", (1, 1)).getbands() == ("L",)
     assert Image.new("I", (1, 1)).getbands() == ("I",)
diff --git a/Tests/test_image_getbbox.py b/Tests/test_image_getbbox.py
index af69ed57a..18c6f6579 100644
--- a/Tests/test_image_getbbox.py
+++ b/Tests/test_image_getbbox.py
@@ -1,15 +1,19 @@
+from __future__ import annotations
+
+import pytest
+
 from PIL import Image
 
 from .helper import hopper
 
 
-def test_sanity():
+def test_sanity() -> None:
     bbox = hopper().getbbox()
     assert isinstance(bbox, tuple)
 
 
-def test_bbox():
-    def check(im, fill_color):
+def test_bbox() -> None:
+    def check(im: Image.Image, fill_color: int | tuple[int, ...]) -> None:
         assert im.getbbox() is None
 
         im.paste(fill_color, (10, 25, 90, 75))
@@ -30,11 +34,24 @@ def test_bbox():
     check(im, 255)
 
     for mode in ("RGBA", "RGBa"):
-        for color in ((0, 0, 0, 0), (127, 127, 127, 0), (255, 255, 255, 0)):
-            im = Image.new(mode, (100, 100), color)
+        for rgba_color in ((0, 0, 0, 0), (127, 127, 127, 0), (255, 255, 255, 0)):
+            im = Image.new(mode, (100, 100), rgba_color)
             check(im, (255, 255, 255, 255))
 
     for mode in ("La", "LA", "PA"):
         for color in ((0, 0), (127, 0), (255, 0)):
             im = Image.new(mode, (100, 100), color)
             check(im, (255, 255))
+
+
+@pytest.mark.parametrize("mode", ("RGBA", "RGBa", "La", "LA", "PA"))
+def test_bbox_alpha_only_false(mode: str) -> None:
+    im = Image.new(mode, (100, 100))
+    assert im.getbbox(alpha_only=False) is None
+
+    fill_color = [1] * Image.getmodebands(mode)
+    fill_color[-1] = 0
+    im.paste(tuple(fill_color), (25, 25, 75, 75))
+    assert im.getbbox(alpha_only=False) == (25, 25, 75, 75)
+
+    assert im.getbbox() is None
diff --git a/Tests/test_image_getcolors.py b/Tests/test_image_getcolors.py
index 7fd0398f9..8dbe82b29 100644
--- a/Tests/test_image_getcolors.py
+++ b/Tests/test_image_getcolors.py
@@ -1,8 +1,10 @@
+from __future__ import annotations
+
 from .helper import hopper
 
 
-def test_getcolors():
-    def getcolors(mode, limit=None):
+def test_getcolors() -> None:
+    def getcolors(mode: str, limit: int | None = None) -> int | None:
         im = hopper(mode)
         if limit:
             colors = im.getcolors(limit)
@@ -37,7 +39,7 @@ def test_getcolors():
 # --------------------------------------------------------------------
 
 
-def test_pack():
+def test_pack() -> None:
     # Pack problems for small tables (@PIL209)
 
     im = hopper().quantize(3).convert("RGB")
@@ -52,17 +54,21 @@ def test_pack():
     assert A is None
 
     A = im.getcolors(maxcolors=3)
+    assert A is not None
     A.sort()
     assert A == expected
 
     A = im.getcolors(maxcolors=4)
+    assert A is not None
     A.sort()
     assert A == expected
 
     A = im.getcolors(maxcolors=8)
+    assert A is not None
     A.sort()
     assert A == expected
 
     A = im.getcolors(maxcolors=16)
+    assert A is not None
     A.sort()
     assert A == expected
diff --git a/Tests/test_image_getdata.py b/Tests/test_image_getdata.py
index 36c81b40f..dd3d70b34 100644
--- a/Tests/test_image_getdata.py
+++ b/Tests/test_image_getdata.py
@@ -1,9 +1,11 @@
+from __future__ import annotations
+
 from PIL import Image
 
 from .helper import hopper
 
 
-def test_sanity():
+def test_sanity() -> None:
     data = hopper().getdata()
 
     len(data)
@@ -12,8 +14,8 @@ def test_sanity():
     assert data[0] == (20, 20, 70)
 
 
-def test_roundtrip():
-    def getdata(mode):
+def test_mode() -> None:
+    def getdata(mode: str) -> tuple[float | tuple[int, ...], int, int]:
         im = hopper(mode).resize((32, 30), Image.Resampling.NEAREST)
         data = im.getdata()
         return data[0], len(data), len(list(data))
diff --git a/Tests/test_image_getextrema.py b/Tests/test_image_getextrema.py
index 710794da4..de5956f3e 100644
--- a/Tests/test_image_getextrema.py
+++ b/Tests/test_image_getextrema.py
@@ -1,10 +1,12 @@
+from __future__ import annotations
+
 from PIL import Image
 
 from .helper import hopper
 
 
-def test_extrema():
-    def extrema(mode):
+def test_extrema() -> None:
+    def extrema(mode: str) -> tuple[float, float] | tuple[tuple[int, int], ...]:
         return hopper(mode).getextrema()
 
     assert extrema("1") == (0, 255)
@@ -18,7 +20,7 @@ def test_extrema():
     assert extrema("I;16") == (1, 255)
 
 
-def test_true_16():
+def test_true_16() -> None:
     with Image.open("Tests/images/16_bit_noise.tif") as im:
         assert im.mode == "I;16"
         extrema = im.getextrema()
diff --git a/Tests/test_image_getim.py b/Tests/test_image_getim.py
index 746e63b15..fa58492fc 100644
--- a/Tests/test_image_getim.py
+++ b/Tests/test_image_getim.py
@@ -1,9 +1,19 @@
+from __future__ import annotations
+
+import pytest
+
 from .helper import hopper
 
 
-def test_sanity():
+def test_sanity() -> None:
     im = hopper()
-    type_repr = repr(type(im.getim()))
 
+    type_repr = repr(type(im.getim()))
     assert "PyCapsule" in type_repr
-    assert isinstance(im.im.id, int)
+
+    with pytest.warns(DeprecationWarning):
+        assert isinstance(im.im.id, int)
+
+    with pytest.warns(DeprecationWarning):
+        ptrs = dict(im.im.unsafe_ptrs)
+    assert ptrs.keys() == {"image8", "image32", "image"}
diff --git a/Tests/test_image_getpalette.py b/Tests/test_image_getpalette.py
index 58a6dacbb..6a8f157fc 100644
--- a/Tests/test_image_getpalette.py
+++ b/Tests/test_image_getpalette.py
@@ -1,10 +1,12 @@
+from __future__ import annotations
+
 from PIL import Image
 
 from .helper import hopper
 
 
-def test_palette():
-    def palette(mode):
+def test_palette() -> None:
+    def palette(mode: str) -> list[int] | None:
         p = hopper(mode).getpalette()
         if p:
             return p[:10]
@@ -21,7 +23,7 @@ def test_palette():
     assert palette("YCbCr") is None
 
 
-def test_palette_rawmode():
+def test_palette_rawmode() -> None:
     im = Image.new("P", (1, 1))
     im.putpalette((1, 2, 3))
 
diff --git a/Tests/test_image_getprojection.py b/Tests/test_image_getprojection.py
index f65d40708..2b5a758ed 100644
--- a/Tests/test_image_getprojection.py
+++ b/Tests/test_image_getprojection.py
@@ -1,9 +1,11 @@
+from __future__ import annotations
+
 from PIL import Image
 
 from .helper import hopper
 
 
-def test_sanity():
+def test_sanity() -> None:
     im = hopper()
 
     projection = im.getprojection()
diff --git a/Tests/test_image_histogram.py b/Tests/test_image_histogram.py
index 0ee52e724..dbd55d4c2 100644
--- a/Tests/test_image_histogram.py
+++ b/Tests/test_image_histogram.py
@@ -1,8 +1,10 @@
+from __future__ import annotations
+
 from .helper import hopper
 
 
-def test_histogram():
-    def histogram(mode):
+def test_histogram() -> None:
+    def histogram(mode: str) -> tuple[int, int, int]:
         h = hopper(mode).histogram()
         return len(h), min(h), max(h)
 
diff --git a/Tests/test_image_load.py b/Tests/test_image_load.py
index f7fe99bb4..4f1d63b8f 100644
--- a/Tests/test_image_load.py
+++ b/Tests/test_image_load.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import logging
 import os
 
@@ -8,14 +10,15 @@ from PIL import Image
 from .helper import hopper
 
 
-def test_sanity():
+def test_sanity() -> None:
     im = hopper()
-    pix = im.load()
+    px = im.load()
 
-    assert pix[0, 0] == (20, 20, 70)
+    assert px is not None
+    assert px[0, 0] == (20, 20, 70)
 
 
-def test_close():
+def test_close() -> None:
     im = Image.open("Tests/images/hopper.gif")
     im.close()
     with pytest.raises(ValueError):
@@ -24,7 +27,7 @@ def test_close():
         im.getpixel((0, 0))
 
 
-def test_close_after_load(caplog):
+def test_close_after_load(caplog: pytest.LogCaptureFixture) -> None:
     im = Image.open("Tests/images/hopper.gif")
     im.load()
     with caplog.at_level(logging.DEBUG):
@@ -32,7 +35,7 @@ def test_close_after_load(caplog):
     assert len(caplog.records) == 0
 
 
-def test_contextmanager():
+def test_contextmanager() -> None:
     fn = None
     with Image.open("Tests/images/hopper.gif") as im:
         fn = im.fp.fileno()
@@ -42,7 +45,7 @@ def test_contextmanager():
         os.fstat(fn)
 
 
-def test_contextmanager_non_exclusive_fp():
+def test_contextmanager_non_exclusive_fp() -> None:
     with open("Tests/images/hopper.gif", "rb") as fp:
         with Image.open(fp):
             pass
diff --git a/Tests/test_image_mode.py b/Tests/test_image_mode.py
index e4c8bb9df..20d3a160e 100644
--- a/Tests/test_image_mode.py
+++ b/Tests/test_image_mode.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, ImageMode
@@ -5,7 +7,7 @@ from PIL import Image, ImageMode
 from .helper import hopper
 
 
-def test_sanity():
+def test_sanity() -> None:
     with hopper() as im:
         im.mode
 
@@ -66,8 +68,12 @@ def test_sanity():
     ),
 )
 def test_properties(
-    mode, expected_base, expected_type, expected_bands, expected_band_names
-):
+    mode: str,
+    expected_base: str,
+    expected_type: str,
+    expected_bands: int,
+    expected_band_names: tuple[str, ...],
+) -> None:
     assert Image.getmodebase(mode) == expected_base
     assert Image.getmodetype(mode) == expected_type
     assert Image.getmodebands(mode) == expected_bands
diff --git a/Tests/test_image_paste.py b/Tests/test_image_paste.py
index 1ab02017d..2cff6c893 100644
--- a/Tests/test_image_paste.py
+++ b/Tests/test_image_paste.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image
@@ -6,14 +8,13 @@ from .helper import CachedProperty, assert_image_equal
 
 
 class TestImagingPaste:
-    masks = {}
     size = 128
 
-    def assert_9points_image(self, im, expected):
-        expected = [
-            point[0] if im.mode == "L" else point[: len(im.mode)] for point in expected
-        ]
+    def assert_9points_image(
+        self, im: Image.Image, expected: list[tuple[int, int, int, int]]
+    ) -> None:
         px = im.load()
+        assert px is not None
         actual = [
             px[0, 0],
             px[self.size // 2, 0],
@@ -25,9 +26,17 @@ class TestImagingPaste:
             px[self.size // 2, self.size - 1],
             px[self.size - 1, self.size - 1],
         ]
-        assert actual == expected
+        assert actual == [
+            point[0] if im.mode == "L" else point[: len(im.mode)] for point in expected
+        ]
 
-    def assert_9points_paste(self, im, im2, mask, expected):
+    def assert_9points_paste(
+        self,
+        im: Image.Image,
+        im2: Image.Image | str | tuple[int, ...],
+        mask: Image.Image,
+        expected: list[tuple[int, int, int, int]],
+    ) -> None:
         im3 = im.copy()
         im3.paste(im2, (0, 0), mask)
         self.assert_9points_image(im3, expected)
@@ -37,29 +46,31 @@ class TestImagingPaste:
         self.assert_9points_image(im, expected)
 
     @CachedProperty
-    def mask_1(self):
+    def mask_1(self) -> Image.Image:
         mask = Image.new("1", (self.size, self.size))
         px = mask.load()
+        assert px is not None
         for y in range(mask.height):
             for x in range(mask.width):
                 px[y, x] = (x + y) % 2
         return mask
 
     @CachedProperty
-    def mask_L(self):
+    def mask_L(self) -> Image.Image:
         return self.gradient_L.transpose(Image.Transpose.ROTATE_270)
 
     @CachedProperty
-    def gradient_L(self):
+    def gradient_L(self) -> Image.Image:
         gradient = Image.new("L", (self.size, self.size))
         px = gradient.load()
+        assert px is not None
         for y in range(gradient.height):
             for x in range(gradient.width):
                 px[y, x] = (x + y) % 255
         return gradient
 
     @CachedProperty
-    def gradient_RGB(self):
+    def gradient_RGB(self) -> Image.Image:
         return Image.merge(
             "RGB",
             [
@@ -70,7 +81,7 @@ class TestImagingPaste:
         )
 
     @CachedProperty
-    def gradient_LA(self):
+    def gradient_LA(self) -> Image.Image:
         return Image.merge(
             "LA",
             [
@@ -80,7 +91,7 @@ class TestImagingPaste:
         )
 
     @CachedProperty
-    def gradient_RGBA(self):
+    def gradient_RGBA(self) -> Image.Image:
         return Image.merge(
             "RGBA",
             [
@@ -92,7 +103,7 @@ class TestImagingPaste:
         )
 
     @CachedProperty
-    def gradient_RGBa(self):
+    def gradient_RGBa(self) -> Image.Image:
         return Image.merge(
             "RGBa",
             [
@@ -104,7 +115,7 @@ class TestImagingPaste:
         )
 
     @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
-    def test_image_solid(self, mode):
+    def test_image_solid(self, mode: str) -> None:
         im = Image.new(mode, (200, 200), "red")
         im2 = getattr(self, "gradient_" + mode)
 
@@ -114,7 +125,7 @@ class TestImagingPaste:
         assert_image_equal(im, im2)
 
     @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
-    def test_image_mask_1(self, mode):
+    def test_image_mask_1(self, mode: str) -> None:
         im = Image.new(mode, (200, 200), "white")
         im2 = getattr(self, "gradient_" + mode)
 
@@ -136,7 +147,7 @@ class TestImagingPaste:
         )
 
     @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
-    def test_image_mask_L(self, mode):
+    def test_image_mask_L(self, mode: str) -> None:
         im = Image.new(mode, (200, 200), "white")
         im2 = getattr(self, "gradient_" + mode)
 
@@ -158,7 +169,7 @@ class TestImagingPaste:
         )
 
     @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
-    def test_image_mask_LA(self, mode):
+    def test_image_mask_LA(self, mode: str) -> None:
         im = Image.new(mode, (200, 200), "white")
         im2 = getattr(self, "gradient_" + mode)
 
@@ -180,7 +191,7 @@ class TestImagingPaste:
         )
 
     @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
-    def test_image_mask_RGBA(self, mode):
+    def test_image_mask_RGBA(self, mode: str) -> None:
         im = Image.new(mode, (200, 200), "white")
         im2 = getattr(self, "gradient_" + mode)
 
@@ -202,7 +213,7 @@ class TestImagingPaste:
         )
 
     @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
-    def test_image_mask_RGBa(self, mode):
+    def test_image_mask_RGBa(self, mode: str) -> None:
         im = Image.new(mode, (200, 200), "white")
         im2 = getattr(self, "gradient_" + mode)
 
@@ -224,7 +235,7 @@ class TestImagingPaste:
         )
 
     @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
-    def test_color_solid(self, mode):
+    def test_color_solid(self, mode: str) -> None:
         im = Image.new(mode, (200, 200), "black")
 
         rect = (12, 23, 128 + 12, 128 + 23)
@@ -237,7 +248,7 @@ class TestImagingPaste:
             assert sum(head[:255]) == 0
 
     @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
-    def test_color_mask_1(self, mode):
+    def test_color_mask_1(self, mode: str) -> None:
         im = Image.new(mode, (200, 200), (50, 60, 70, 80)[: len(mode)])
         color = (10, 20, 30, 40)[: len(mode)]
 
@@ -259,7 +270,7 @@ class TestImagingPaste:
         )
 
     @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
-    def test_color_mask_L(self, mode):
+    def test_color_mask_L(self, mode: str) -> None:
         im = getattr(self, "gradient_" + mode).copy()
         color = "white"
 
@@ -281,7 +292,7 @@ class TestImagingPaste:
         )
 
     @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
-    def test_color_mask_RGBA(self, mode):
+    def test_color_mask_RGBA(self, mode: str) -> None:
         im = getattr(self, "gradient_" + mode).copy()
         color = "white"
 
@@ -303,7 +314,7 @@ class TestImagingPaste:
         )
 
     @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
-    def test_color_mask_RGBa(self, mode):
+    def test_color_mask_RGBa(self, mode: str) -> None:
         im = getattr(self, "gradient_" + mode).copy()
         color = "white"
 
@@ -324,9 +335,14 @@ class TestImagingPaste:
             ],
         )
 
-    def test_different_sizes(self):
+    def test_different_sizes(self) -> None:
         im = Image.new("RGB", (100, 100))
         im2 = Image.new("RGB", (50, 50))
 
         im.copy().paste(im2)
         im.copy().paste(im2, (0, 0))
+
+    def test_incorrect_abbreviated_form(self) -> None:
+        im = Image.new("L", (1, 1))
+        with pytest.raises(ValueError):
+            im.paste(im, im, im)
diff --git a/Tests/test_image_point.py b/Tests/test_image_point.py
index c406cb8ec..a5d5a15db 100644
--- a/Tests/test_image_point.py
+++ b/Tests/test_image_point.py
@@ -1,9 +1,11 @@
+from __future__ import annotations
+
 import pytest
 
 from .helper import assert_image_equal, hopper
 
 
-def test_sanity():
+def test_sanity() -> None:
     im = hopper()
 
     with pytest.raises(ValueError):
@@ -37,7 +39,7 @@ def test_sanity():
         im.point(lambda x: x // 2)
 
 
-def test_16bit_lut():
+def test_16bit_lut() -> None:
     """Tests for 16 bit -> 8 bit lut for converting I->L images
     see https://github.com/python-pillow/Pillow/issues/440
     """
@@ -45,7 +47,7 @@ def test_16bit_lut():
     im.point(list(range(256)) * 256, "L")
 
 
-def test_f_lut():
+def test_f_lut() -> None:
     """Tests for floating point lut of 8bit gray image"""
     im = hopper("L")
     lut = [0.5 * float(x) for x in range(256)]
@@ -56,7 +58,7 @@ def test_f_lut():
     assert_image_equal(out.convert("L"), im.point(int_lut, "L"))
 
 
-def test_f_mode():
+def test_f_mode() -> None:
     im = hopper("F")
     with pytest.raises(ValueError):
-        im.point(None)
+        im.point([])
diff --git a/Tests/test_image_putalpha.py b/Tests/test_image_putalpha.py
index e2dcead34..2c92911d1 100644
--- a/Tests/test_image_putalpha.py
+++ b/Tests/test_image_putalpha.py
@@ -1,7 +1,9 @@
+from __future__ import annotations
+
 from PIL import Image
 
 
-def test_interface():
+def test_interface() -> None:
     im = Image.new("RGBA", (1, 1), (1, 2, 3, 0))
     assert im.getpixel((0, 0)) == (1, 2, 3, 0)
 
@@ -15,7 +17,7 @@ def test_interface():
     assert im.getpixel((0, 0)) == (1, 2, 3, 5)
 
 
-def test_promote():
+def test_promote() -> None:
     im = Image.new("L", (1, 1), 1)
     assert im.getpixel((0, 0)) == 1
 
@@ -38,7 +40,7 @@ def test_promote():
     assert im.getpixel((0, 0)) == (1, 2, 3, 4)
 
 
-def test_readonly():
+def test_readonly() -> None:
     im = Image.new("RGB", (1, 1), (1, 2, 3))
     im.readonly = 1
 
diff --git a/Tests/test_image_putdata.py b/Tests/test_image_putdata.py
index db5307d2c..27cb7c59d 100644
--- a/Tests/test_image_putdata.py
+++ b/Tests/test_image_putdata.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import sys
 from array import array
 
@@ -8,7 +10,7 @@ from PIL import Image
 from .helper import assert_image_equal, hopper
 
 
-def test_sanity():
+def test_sanity() -> None:
     im1 = hopper()
 
     data = list(im1.getdata())
@@ -27,9 +29,9 @@ def test_sanity():
     assert_image_equal(im1, im2)
 
 
-def test_long_integers():
+def test_long_integers() -> None:
     # see bug-200802-systemerror
-    def put(value):
+    def put(value: int) -> float | tuple[int, ...] | None:
         im = Image.new("RGBA", (1, 1))
         im.putdata([value])
         return im.getpixel((0, 0))
@@ -38,22 +40,25 @@ def test_long_integers():
     assert put(0xFFFFFFFF) == (255, 255, 255, 255)
     assert put(-1) == (255, 255, 255, 255)
     assert put(-1) == (255, 255, 255, 255)
-    assert put(sys.maxsize) == (255, 255, 255, 255)
+    if sys.maxsize > 2**32:
+        assert put(sys.maxsize) == (255, 255, 255, 255)
+    else:
+        assert put(sys.maxsize) == (255, 255, 255, 127)
 
 
-def test_pypy_performance():
+def test_pypy_performance() -> None:
     im = Image.new("L", (256, 256))
     im.putdata(list(range(256)) * 256)
 
 
-def test_mode_with_L_with_float():
+def test_mode_with_L_with_float() -> None:
     im = Image.new("L", (1, 1), 0)
     im.putdata([2.0])
     assert im.getpixel((0, 0)) == 2
 
 
 @pytest.mark.parametrize("mode", ("I", "I;16", "I;16L", "I;16B"))
-def test_mode_i(mode):
+def test_mode_i(mode: str) -> None:
     src = hopper("L")
     data = list(src.getdata())
     im = Image.new(mode, src.size, 0)
@@ -63,7 +68,7 @@ def test_mode_i(mode):
     assert list(im.getdata()) == target
 
 
-def test_mode_F():
+def test_mode_F() -> None:
     src = hopper("L")
     data = list(src.getdata())
     im = Image.new("F", src.size, 0)
@@ -73,7 +78,17 @@ def test_mode_F():
     assert list(im.getdata()) == target
 
 
-def test_array_B():
+@pytest.mark.parametrize("mode", ("BGR;15", "BGR;16", "BGR;24"))
+def test_mode_BGR(mode: str) -> None:
+    data = [(16, 32, 49), (32, 32, 98)]
+    with pytest.warns(DeprecationWarning):
+        im = Image.new(mode, (1, 2))
+    im.putdata(data)
+
+    assert list(im.getdata()) == data
+
+
+def test_array_B() -> None:
     # shouldn't segfault
     # see https://github.com/python-pillow/Pillow/issues/1008
 
@@ -84,7 +99,7 @@ def test_array_B():
     assert len(im.getdata()) == len(arr)
 
 
-def test_array_F():
+def test_array_F() -> None:
     # shouldn't segfault
     # see https://github.com/python-pillow/Pillow/issues/1008
 
@@ -95,7 +110,7 @@ def test_array_F():
     assert len(im.getdata()) == len(arr)
 
 
-def test_not_flattened():
+def test_not_flattened() -> None:
     im = Image.new("L", (1, 1))
     with pytest.raises(TypeError):
         im.putdata([[0]])
diff --git a/Tests/test_image_putpalette.py b/Tests/test_image_putpalette.py
index 665e08a7e..f2c447f71 100644
--- a/Tests/test_image_putpalette.py
+++ b/Tests/test_image_putpalette.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, ImagePalette
@@ -5,8 +7,8 @@ from PIL import Image, ImagePalette
 from .helper import assert_image_equal, assert_image_equal_tofile, hopper
 
 
-def test_putpalette():
-    def palette(mode):
+def test_putpalette() -> None:
+    def palette(mode: str) -> str | tuple[str, list[int]]:
         im = hopper(mode).copy()
         im.putpalette(list(range(256)) * 3)
         p = im.getpalette()
@@ -41,7 +43,7 @@ def test_putpalette():
         im.putpalette(list(range(256)) * 3)
 
 
-def test_imagepalette():
+def test_imagepalette() -> None:
     im = hopper("P")
     im.putpalette(ImagePalette.negative())
     assert_image_equal_tofile(im.convert("RGB"), "Tests/images/palette_negative.png")
@@ -55,7 +57,7 @@ def test_imagepalette():
     assert_image_equal_tofile(im.convert("RGB"), "Tests/images/palette_wedge.png")
 
 
-def test_putpalette_with_alpha_values():
+def test_putpalette_with_alpha_values() -> None:
     with Image.open("Tests/images/transparent.gif") as im:
         expected = im.convert("RGBA")
 
@@ -77,10 +79,23 @@ def test_putpalette_with_alpha_values():
     (
         ("RGBA", (1, 2, 3, 4)),
         ("RGBAX", (1, 2, 3, 4, 0)),
+        ("ARGB", (4, 1, 2, 3)),
     ),
 )
-def test_rgba_palette(mode, palette):
+def test_rgba_palette(mode: str, palette: tuple[int, ...]) -> None:
     im = Image.new("P", (1, 1))
     im.putpalette(palette, mode)
     assert im.getpalette() == [1, 2, 3]
+    assert im.palette is not None
     assert im.palette.colors == {(1, 2, 3, 4): 0}
+
+
+def test_empty_palette() -> None:
+    im = Image.new("P", (1, 1))
+    assert im.getpalette() == []
+
+
+def test_undefined_palette_index() -> None:
+    im = Image.new("P", (1, 1), 3)
+    im.putpalette((1, 2, 3))
+    assert im.convert("RGB").getpixel((0, 0)) == (0, 0, 0)
diff --git a/Tests/test_image_quantize.py b/Tests/test_image_quantize.py
index 981753eb9..7c564d967 100644
--- a/Tests/test_image_quantize.py
+++ b/Tests/test_image_quantize.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 from packaging.version import parse as parse_version
 
@@ -6,7 +8,7 @@ from PIL import Image, features
 from .helper import assert_image_similar, hopper, is_ppc64le, skip_unless_feature
 
 
-def test_sanity():
+def test_sanity() -> None:
     image = hopper()
     converted = image.quantize()
     assert converted.mode == "P"
@@ -19,27 +21,32 @@ def test_sanity():
 
 
 @skip_unless_feature("libimagequant")
-def test_libimagequant_quantize():
+def test_libimagequant_quantize() -> None:
     image = hopper()
     if is_ppc64le():
-        libimagequant = parse_version(features.version_feature("libimagequant"))
-        if libimagequant < parse_version("4"):
+        version = features.version_feature("libimagequant")
+        assert version is not None
+        if parse_version(version) < parse_version("4"):
             pytest.skip("Fails with libimagequant earlier than 4.0.0 on ppc64le")
     converted = image.quantize(100, Image.Quantize.LIBIMAGEQUANT)
     assert converted.mode == "P"
     assert_image_similar(converted.convert("RGB"), image, 15)
-    assert len(converted.getcolors()) == 100
+    colors = converted.getcolors()
+    assert colors is not None
+    assert len(colors) == 100
 
 
-def test_octree_quantize():
+def test_octree_quantize() -> None:
     image = hopper()
     converted = image.quantize(100, Image.Quantize.FASTOCTREE)
     assert converted.mode == "P"
     assert_image_similar(converted.convert("RGB"), image, 20)
-    assert len(converted.getcolors()) == 100
+    colors = converted.getcolors()
+    assert colors is not None
+    assert len(colors) == 100
 
 
-def test_rgba_quantize():
+def test_rgba_quantize() -> None:
     image = hopper("RGBA")
     with pytest.raises(ValueError):
         image.quantize(method=0)
@@ -47,7 +54,7 @@ def test_rgba_quantize():
     assert image.quantize().convert().mode == "RGBA"
 
 
-def test_quantize():
+def test_quantize() -> None:
     with Image.open("Tests/images/caption_6_33_22.png") as image:
         image = image.convert("RGB")
     converted = image.quantize()
@@ -55,33 +62,36 @@ def test_quantize():
     assert_image_similar(converted.convert("RGB"), image, 1)
 
 
-def test_quantize_no_dither():
+def test_quantize_no_dither() -> None:
     image = hopper()
     with Image.open("Tests/images/caption_6_33_22.png") as palette:
         palette = palette.convert("P")
 
     converted = image.quantize(dither=Image.Dither.NONE, palette=palette)
     assert converted.mode == "P"
+    assert converted.palette is not None
     assert converted.palette.palette == palette.palette.palette
 
 
-def test_quantize_no_dither2():
+def test_quantize_no_dither2() -> None:
     im = Image.new("RGB", (9, 1))
-    im.putdata(list((p,) * 3 for p in range(0, 36, 4)))
+    im.putdata([(p,) * 3 for p in range(0, 36, 4)])
 
     palette = Image.new("P", (1, 1))
     data = (0, 0, 0, 32, 32, 32)
     palette.putpalette(data)
     quantized = im.quantize(dither=Image.Dither.NONE, palette=palette)
 
+    assert quantized.palette is not None
     assert tuple(quantized.palette.palette) == data
 
     px = quantized.load()
+    assert px is not None
     for x in range(9):
         assert px[x, 0] == (0 if x < 5 else 1)
 
 
-def test_quantize_dither_diff():
+def test_quantize_dither_diff() -> None:
     image = hopper()
     with Image.open("Tests/images/caption_6_33_22.png") as palette:
         palette = palette.convert("P")
@@ -92,20 +102,36 @@ def test_quantize_dither_diff():
     assert dither.tobytes() != nodither.tobytes()
 
 
-def test_colors():
+@pytest.mark.parametrize(
+    "method", (Image.Quantize.MEDIANCUT, Image.Quantize.MAXCOVERAGE)
+)
+def test_quantize_kmeans(method: Image.Quantize) -> None:
+    im = hopper()
+    no_kmeans = im.quantize(kmeans=0, method=method)
+    kmeans = im.quantize(kmeans=1, method=method)
+    assert kmeans.tobytes() != no_kmeans.tobytes()
+
+    with pytest.raises(ValueError):
+        im.quantize(kmeans=-1, method=method)
+
+
+def test_colors() -> None:
     im = hopper()
     colors = 2
     converted = im.quantize(colors)
+    assert converted.palette is not None
     assert len(converted.palette.palette) == colors * len("RGB")
 
 
-def test_transparent_colors_equal():
+def test_transparent_colors_equal() -> None:
     im = Image.new("RGBA", (1, 2), (0, 0, 0, 0))
     px = im.load()
+    assert px is not None
     px[0, 1] = (255, 255, 255, 0)
 
     converted = im.quantize()
     converted_px = converted.load()
+    assert converted_px is not None
     assert converted_px[0, 0] == converted_px[0, 1]
 
 
@@ -118,15 +144,17 @@ def test_transparent_colors_equal():
         (Image.Quantize.FASTOCTREE, (0, 0, 0, 0)),
     ),
 )
-def test_palette(method, color):
+def test_palette(method: Image.Quantize, color: tuple[int, ...]) -> None:
     im = Image.new("RGBA" if len(color) == 4 else "RGB", (1, 1), color)
 
     converted = im.quantize(method=method)
     converted_px = converted.load()
+    assert converted_px is not None
+    assert converted.palette is not None
     assert converted_px[0, 0] == converted.palette.colors[color]
 
 
-def test_small_palette():
+def test_small_palette() -> None:
     # Arrange
     im = hopper()
 
@@ -138,4 +166,6 @@ def test_small_palette():
     im = im.quantize(palette=p)
 
     # Assert
-    assert len(im.getcolors()) == 2
+    quantized_colors = im.getcolors()
+    assert quantized_colors is not None
+    assert len(quantized_colors) == 2
diff --git a/Tests/test_image_reduce.py b/Tests/test_image_reduce.py
index ae8d740a0..6771b46b0 100644
--- a/Tests/test_image_reduce.py
+++ b/Tests/test_image_reduce.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, ImageMath, ImageMode
@@ -46,7 +48,7 @@ gradients_image.load()
         ((1, 3), (10, 4)),
     ),
 )
-def test_args_factor(size, expected):
+def test_args_factor(size: int | tuple[int, int], expected: tuple[int, int]) -> None:
     im = Image.new("L", (10, 10))
     assert expected == im.reduce(size).size
 
@@ -54,10 +56,12 @@ def test_args_factor(size, expected):
 @pytest.mark.parametrize(
     "size, expected_error", ((0, ValueError), (2.0, TypeError), ((0, 10), ValueError))
 )
-def test_args_factor_error(size, expected_error):
+def test_args_factor_error(
+    size: float | tuple[int, int], expected_error: type[Exception]
+) -> None:
     im = Image.new("L", (10, 10))
     with pytest.raises(expected_error):
-        im.reduce(size)
+        im.reduce(size)  # type: ignore[arg-type]
 
 
 @pytest.mark.parametrize(
@@ -67,7 +71,7 @@ def test_args_factor_error(size, expected_error):
         ((5, 5, 6, 6), (1, 1)),
     ),
 )
-def test_args_box(size, expected):
+def test_args_box(size: tuple[int, int, int, int], expected: tuple[int, int]) -> None:
     im = Image.new("L", (10, 10))
     assert expected == im.reduce(2, size).size
 
@@ -84,23 +88,25 @@ def test_args_box(size, expected):
         ((5, 0, 5, 10), ValueError),
     ),
 )
-def test_args_box_error(size, expected_error):
+def test_args_box_error(
+    size: str | tuple[int, int, int, int], expected_error: type[Exception]
+) -> None:
     im = Image.new("L", (10, 10))
     with pytest.raises(expected_error):
-        im.reduce(2, size).size
+        im.reduce(2, size).size  # type: ignore[arg-type]
 
 
 @pytest.mark.parametrize("mode", ("P", "1", "I;16"))
-def test_unsupported_modes(mode):
+def test_unsupported_modes(mode: str) -> None:
     im = Image.new("P", (10, 10))
     with pytest.raises(ValueError):
         im.reduce(3)
 
 
-def get_image(mode):
+def get_image(mode: str) -> Image.Image:
     mode_info = ImageMode.getmode(mode)
     if mode_info.basetype == "L":
-        bands = [gradients_image]
+        bands: list[Image.Image] = [gradients_image]
         for _ in mode_info.bands[1:]:
             # rotate previous image
             band = bands[-1].transpose(Image.Transpose.ROTATE_90)
@@ -117,14 +123,19 @@ def get_image(mode):
     return im.crop((0, 0, im.width, im.height - 5))
 
 
-def compare_reduce_with_box(im, factor):
+def compare_reduce_with_box(im: Image.Image, factor: int | tuple[int, int]) -> None:
     box = (11, 13, 146, 164)
     reduced = im.reduce(factor, box=box)
     reference = im.crop(box).reduce(factor)
     assert reduced == reference
 
 
-def compare_reduce_with_reference(im, factor, average_diff=0.4, max_diff=1):
+def compare_reduce_with_reference(
+    im: Image.Image,
+    factor: int | tuple[int, int],
+    average_diff: float = 0.4,
+    max_diff: int = 1,
+) -> None:
     """Image.reduce() should look very similar to Image.resize(BOX).
 
     A reference image is compiled from a large source area
@@ -169,7 +180,9 @@ def compare_reduce_with_reference(im, factor, average_diff=0.4, max_diff=1):
     assert_compare_images(reduced, reference, average_diff, max_diff)
 
 
-def assert_compare_images(a, b, max_average_diff, max_diff=255):
+def assert_compare_images(
+    a: Image.Image, b: Image.Image, max_average_diff: float, max_diff: int = 255
+) -> None:
     assert a.mode == b.mode, f"got mode {repr(a.mode)}, expected {repr(b.mode)}"
     assert a.size == b.size, f"got size {repr(a.size)}, expected {repr(b.size)}"
 
@@ -177,7 +190,9 @@ def assert_compare_images(a, b, max_average_diff, max_diff=255):
 
     bands = ImageMode.getmode(a.mode).bands
     for band, ach, bch in zip(bands, a.split(), b.split()):
-        ch_diff = ImageMath.eval("convert(abs(a - b), 'L')", a=ach, b=bch)
+        ch_diff = ImageMath.lambda_eval(
+            lambda args: args["convert"](abs(args["a"] - args["b"]), "L"), a=ach, b=bch
+        )
         ch_hist = ch_diff.histogram()
 
         average_diff = sum(i * num for i, num in enumerate(ch_hist)) / (
@@ -197,20 +212,20 @@ def assert_compare_images(a, b, max_average_diff, max_diff=255):
 
 
 @pytest.mark.parametrize("factor", remarkable_factors)
-def test_mode_L(factor):
+def test_mode_L(factor: int | tuple[int, int]) -> None:
     im = get_image("L")
     compare_reduce_with_reference(im, factor)
     compare_reduce_with_box(im, factor)
 
 
 @pytest.mark.parametrize("factor", remarkable_factors)
-def test_mode_LA(factor):
+def test_mode_LA(factor: int | tuple[int, int]) -> None:
     im = get_image("LA")
     compare_reduce_with_reference(im, factor, 0.8, 5)
 
 
 @pytest.mark.parametrize("factor", remarkable_factors)
-def test_mode_LA_opaque(factor):
+def test_mode_LA_opaque(factor: int | tuple[int, int]) -> None:
     im = get_image("LA")
     # With opaque alpha, an error should be way smaller.
     im.putalpha(Image.new("L", im.size, 255))
@@ -219,27 +234,27 @@ def test_mode_LA_opaque(factor):
 
 
 @pytest.mark.parametrize("factor", remarkable_factors)
-def test_mode_La(factor):
+def test_mode_La(factor: int | tuple[int, int]) -> None:
     im = get_image("La")
     compare_reduce_with_reference(im, factor)
     compare_reduce_with_box(im, factor)
 
 
 @pytest.mark.parametrize("factor", remarkable_factors)
-def test_mode_RGB(factor):
+def test_mode_RGB(factor: int | tuple[int, int]) -> None:
     im = get_image("RGB")
     compare_reduce_with_reference(im, factor)
     compare_reduce_with_box(im, factor)
 
 
 @pytest.mark.parametrize("factor", remarkable_factors)
-def test_mode_RGBA(factor):
+def test_mode_RGBA(factor: int | tuple[int, int]) -> None:
     im = get_image("RGBA")
     compare_reduce_with_reference(im, factor, 0.8, 5)
 
 
 @pytest.mark.parametrize("factor", remarkable_factors)
-def test_mode_RGBA_opaque(factor):
+def test_mode_RGBA_opaque(factor: int | tuple[int, int]) -> None:
     im = get_image("RGBA")
     # With opaque alpha, an error should be way smaller.
     im.putalpha(Image.new("L", im.size, 255))
@@ -248,27 +263,27 @@ def test_mode_RGBA_opaque(factor):
 
 
 @pytest.mark.parametrize("factor", remarkable_factors)
-def test_mode_RGBa(factor):
+def test_mode_RGBa(factor: int | tuple[int, int]) -> None:
     im = get_image("RGBa")
     compare_reduce_with_reference(im, factor)
     compare_reduce_with_box(im, factor)
 
 
 @pytest.mark.parametrize("factor", remarkable_factors)
-def test_mode_I(factor):
+def test_mode_I(factor: int | tuple[int, int]) -> None:
     im = get_image("I")
     compare_reduce_with_reference(im, factor)
     compare_reduce_with_box(im, factor)
 
 
 @pytest.mark.parametrize("factor", remarkable_factors)
-def test_mode_F(factor):
+def test_mode_F(factor: int | tuple[int, int]) -> None:
     im = get_image("F")
     compare_reduce_with_reference(im, factor, 0, 0)
     compare_reduce_with_box(im, factor)
 
 
 @skip_unless_feature("jpg_2000")
-def test_jpeg2k():
+def test_jpeg2k() -> None:
     with Image.open("Tests/images/test-card-lossless.jp2") as im:
         assert im.reduce(2).size == (320, 240)
diff --git a/Tests/test_image_resample.py b/Tests/test_image_resample.py
index be49955dd..ce6209c0d 100644
--- a/Tests/test_image_resample.py
+++ b/Tests/test_image_resample.py
@@ -1,3 +1,6 @@
+from __future__ import annotations
+
+from collections.abc import Generator
 from contextlib import contextmanager
 
 import pytest
@@ -14,7 +17,7 @@ from .helper import (
 
 class TestImagingResampleVulnerability:
     # see https://github.com/python-pillow/Pillow/issues/1710
-    def test_overflow(self):
+    def test_overflow(self) -> None:
         im = hopper("L")
         size_too_large = 0x100000008 // 4
         size_normal = 1000  # unimportant
@@ -26,7 +29,7 @@ class TestImagingResampleVulnerability:
                 # any resampling filter will do here
                 im.im.resize((xsize, ysize), Image.Resampling.BILINEAR)
 
-    def test_invalid_size(self):
+    def test_invalid_size(self) -> None:
         im = hopper()
 
         # Should not crash
@@ -38,7 +41,7 @@ class TestImagingResampleVulnerability:
         with pytest.raises(ValueError):
             im.resize((100, -100))
 
-    def test_modify_after_resizing(self):
+    def test_modify_after_resizing(self) -> None:
         im = hopper("RGB")
         # get copy with same size
         copy = im.resize(im.size)
@@ -49,7 +52,7 @@ class TestImagingResampleVulnerability:
 
 
 class TestImagingCoreResampleAccuracy:
-    def make_case(self, mode, size, color):
+    def make_case(self, mode: str, size: tuple[int, int], color: int) -> Image.Image:
         """Makes a sample image with two dark and two bright squares.
         For example:
         e0 e0 1f 1f
@@ -64,13 +67,14 @@ class TestImagingCoreResampleAccuracy:
 
         return Image.merge(mode, [case] * len(mode))
 
-    def make_sample(self, data, size):
+    def make_sample(self, data: str, size: tuple[int, int]) -> Image.Image:
         """Restores a sample image from given data string which contains
         hex-encoded pixels from the top left fourth of a sample.
         """
         data = data.replace(" ", "")
         sample = Image.new("L", size)
         s_px = sample.load()
+        assert s_px is not None
         w, h = size[0] // 2, size[1] // 2
         for y in range(h):
             for x in range(w):
@@ -81,9 +85,11 @@ class TestImagingCoreResampleAccuracy:
                 s_px[size[0] - x - 1, y] = 255 - val
         return sample
 
-    def check_case(self, case, sample):
+    def check_case(self, case: Image.Image, sample: Image.Image) -> None:
         s_px = sample.load()
         c_px = case.load()
+        assert s_px is not None
+        assert c_px is not None
         for y in range(case.size[1]):
             for x in range(case.size[0]):
                 if c_px[x, y] != s_px[x, y]:
@@ -93,15 +99,16 @@ class TestImagingCoreResampleAccuracy:
                     )
                     assert s_px[x, y] == c_px[x, y], message
 
-    def serialize_image(self, image):
+    def serialize_image(self, image: Image.Image) -> str:
         s_px = image.load()
+        assert s_px is not None
         return "\n".join(
             " ".join(f"{s_px[x, y]:02x}" for x in range(image.size[0]))
             for y in range(image.size[1])
         )
 
     @pytest.mark.parametrize("mode", ("RGBX", "RGB", "La", "L"))
-    def test_reduce_box(self, mode):
+    def test_reduce_box(self, mode: str) -> None:
         case = self.make_case(mode, (8, 8), 0xE1)
         case = case.resize((4, 4), Image.Resampling.BOX)
         # fmt: off
@@ -112,7 +119,7 @@ class TestImagingCoreResampleAccuracy:
             self.check_case(channel, self.make_sample(data, (4, 4)))
 
     @pytest.mark.parametrize("mode", ("RGBX", "RGB", "La", "L"))
-    def test_reduce_bilinear(self, mode):
+    def test_reduce_bilinear(self, mode: str) -> None:
         case = self.make_case(mode, (8, 8), 0xE1)
         case = case.resize((4, 4), Image.Resampling.BILINEAR)
         # fmt: off
@@ -123,7 +130,7 @@ class TestImagingCoreResampleAccuracy:
             self.check_case(channel, self.make_sample(data, (4, 4)))
 
     @pytest.mark.parametrize("mode", ("RGBX", "RGB", "La", "L"))
-    def test_reduce_hamming(self, mode):
+    def test_reduce_hamming(self, mode: str) -> None:
         case = self.make_case(mode, (8, 8), 0xE1)
         case = case.resize((4, 4), Image.Resampling.HAMMING)
         # fmt: off
@@ -134,7 +141,7 @@ class TestImagingCoreResampleAccuracy:
             self.check_case(channel, self.make_sample(data, (4, 4)))
 
     @pytest.mark.parametrize("mode", ("RGBX", "RGB", "La", "L"))
-    def test_reduce_bicubic(self, mode):
+    def test_reduce_bicubic(self, mode: str) -> None:
         case = self.make_case(mode, (12, 12), 0xE1)
         case = case.resize((6, 6), Image.Resampling.BICUBIC)
         # fmt: off
@@ -146,7 +153,7 @@ class TestImagingCoreResampleAccuracy:
             self.check_case(channel, self.make_sample(data, (6, 6)))
 
     @pytest.mark.parametrize("mode", ("RGBX", "RGB", "La", "L"))
-    def test_reduce_lanczos(self, mode):
+    def test_reduce_lanczos(self, mode: str) -> None:
         case = self.make_case(mode, (16, 16), 0xE1)
         case = case.resize((8, 8), Image.Resampling.LANCZOS)
         # fmt: off
@@ -159,7 +166,7 @@ class TestImagingCoreResampleAccuracy:
             self.check_case(channel, self.make_sample(data, (8, 8)))
 
     @pytest.mark.parametrize("mode", ("RGBX", "RGB", "La", "L"))
-    def test_enlarge_box(self, mode):
+    def test_enlarge_box(self, mode: str) -> None:
         case = self.make_case(mode, (2, 2), 0xE1)
         case = case.resize((4, 4), Image.Resampling.BOX)
         # fmt: off
@@ -170,7 +177,7 @@ class TestImagingCoreResampleAccuracy:
             self.check_case(channel, self.make_sample(data, (4, 4)))
 
     @pytest.mark.parametrize("mode", ("RGBX", "RGB", "La", "L"))
-    def test_enlarge_bilinear(self, mode):
+    def test_enlarge_bilinear(self, mode: str) -> None:
         case = self.make_case(mode, (2, 2), 0xE1)
         case = case.resize((4, 4), Image.Resampling.BILINEAR)
         # fmt: off
@@ -181,7 +188,7 @@ class TestImagingCoreResampleAccuracy:
             self.check_case(channel, self.make_sample(data, (4, 4)))
 
     @pytest.mark.parametrize("mode", ("RGBX", "RGB", "La", "L"))
-    def test_enlarge_hamming(self, mode):
+    def test_enlarge_hamming(self, mode: str) -> None:
         case = self.make_case(mode, (2, 2), 0xE1)
         case = case.resize((4, 4), Image.Resampling.HAMMING)
         # fmt: off
@@ -192,7 +199,7 @@ class TestImagingCoreResampleAccuracy:
             self.check_case(channel, self.make_sample(data, (4, 4)))
 
     @pytest.mark.parametrize("mode", ("RGBX", "RGB", "La", "L"))
-    def test_enlarge_bicubic(self, mode):
+    def test_enlarge_bicubic(self, mode: str) -> None:
         case = self.make_case(mode, (4, 4), 0xE1)
         case = case.resize((8, 8), Image.Resampling.BICUBIC)
         # fmt: off
@@ -205,7 +212,7 @@ class TestImagingCoreResampleAccuracy:
             self.check_case(channel, self.make_sample(data, (8, 8)))
 
     @pytest.mark.parametrize("mode", ("RGBX", "RGB", "La", "L"))
-    def test_enlarge_lanczos(self, mode):
+    def test_enlarge_lanczos(self, mode: str) -> None:
         case = self.make_case(mode, (6, 6), 0xE1)
         case = case.resize((12, 12), Image.Resampling.LANCZOS)
         data = (
@@ -219,7 +226,7 @@ class TestImagingCoreResampleAccuracy:
         for channel in case.split():
             self.check_case(channel, self.make_sample(data, (12, 12)))
 
-    def test_box_filter_correct_range(self):
+    def test_box_filter_correct_range(self) -> None:
         im = Image.new("RGB", (8, 8), "#1688ff").resize(
             (100, 100), Image.Resampling.BOX
         )
@@ -228,34 +235,40 @@ class TestImagingCoreResampleAccuracy:
 
 
 class TestCoreResampleConsistency:
-    def make_case(self, mode, fill):
+    def make_case(
+        self, mode: str, fill: tuple[int, int, int] | float
+    ) -> tuple[Image.Image, float | tuple[int, ...]]:
         im = Image.new(mode, (512, 9), fill)
-        return im.resize((9, 512), Image.Resampling.LANCZOS), im.load()[0, 0]
+        px = im.load()
+        assert px is not None
+        return im.resize((9, 512), Image.Resampling.LANCZOS), px[0, 0]
 
-    def run_case(self, case):
+    def run_case(self, case: tuple[Image.Image, float | tuple[int, ...]]) -> None:
         channel, color = case
         px = channel.load()
+        assert px is not None
         for x in range(channel.size[0]):
             for y in range(channel.size[1]):
                 if px[x, y] != color:
                     message = f"{px[x, y]} != {color} for pixel {(x, y)}"
                     assert px[x, y] == color, message
 
-    def test_8u(self):
+    def test_8u(self) -> None:
         im, color = self.make_case("RGB", (0, 64, 255))
         r, g, b = im.split()
+        assert isinstance(color, tuple)
         self.run_case((r, color[0]))
         self.run_case((g, color[1]))
         self.run_case((b, color[2]))
         self.run_case(self.make_case("L", 12))
 
-    def test_32i(self):
+    def test_32i(self) -> None:
         self.run_case(self.make_case("I", 12))
         self.run_case(self.make_case("I", 0x7FFFFFFF))
         self.run_case(self.make_case("I", -12))
         self.run_case(self.make_case("I", -1 << 31))
 
-    def test_32f(self):
+    def test_32f(self) -> None:
         self.run_case(self.make_case("F", 1))
         self.run_case(self.make_case("F", 3.40282306074e38))
         self.run_case(self.make_case("F", 1.175494e-38))
@@ -263,9 +276,10 @@ class TestCoreResampleConsistency:
 
 
 class TestCoreResampleAlphaCorrect:
-    def make_levels_case(self, mode):
+    def make_levels_case(self, mode: str) -> Image.Image:
         i = Image.new(mode, (256, 16))
         px = i.load()
+        assert px is not None
         for y in range(i.size[1]):
             for x in range(i.size[0]):
                 pix = [x] * len(mode)
@@ -273,17 +287,22 @@ class TestCoreResampleAlphaCorrect:
                 px[x, y] = tuple(pix)
         return i
 
-    def run_levels_case(self, i):
+    def run_levels_case(self, i: Image.Image) -> None:
         px = i.load()
+        assert px is not None
         for y in range(i.size[1]):
-            used_colors = {px[x, y][0] for x in range(i.size[0])}
+            used_colors = set()
+            for x in range(i.size[0]):
+                value = px[x, y]
+                assert isinstance(value, tuple)
+                used_colors.add(value[0])
             assert 256 == len(used_colors), (
                 "All colors should be present in resized image. "
-                f"Only {len(used_colors)} on {y} line."
+                f"Only {len(used_colors)} on line {y}."
             )
 
     @pytest.mark.xfail(reason="Current implementation isn't precise enough")
-    def test_levels_rgba(self):
+    def test_levels_rgba(self) -> None:
         case = self.make_levels_case("RGBA")
         self.run_levels_case(case.resize((512, 32), Image.Resampling.BOX))
         self.run_levels_case(case.resize((512, 32), Image.Resampling.BILINEAR))
@@ -292,7 +311,7 @@ class TestCoreResampleAlphaCorrect:
         self.run_levels_case(case.resize((512, 32), Image.Resampling.LANCZOS))
 
     @pytest.mark.xfail(reason="Current implementation isn't precise enough")
-    def test_levels_la(self):
+    def test_levels_la(self) -> None:
         case = self.make_levels_case("LA")
         self.run_levels_case(case.resize((512, 32), Image.Resampling.BOX))
         self.run_levels_case(case.resize((512, 32), Image.Resampling.BILINEAR))
@@ -300,9 +319,12 @@ class TestCoreResampleAlphaCorrect:
         self.run_levels_case(case.resize((512, 32), Image.Resampling.BICUBIC))
         self.run_levels_case(case.resize((512, 32), Image.Resampling.LANCZOS))
 
-    def make_dirty_case(self, mode, clean_pixel, dirty_pixel):
+    def make_dirty_case(
+        self, mode: str, clean_pixel: tuple[int, ...], dirty_pixel: tuple[int, ...]
+    ) -> Image.Image:
         i = Image.new(mode, (64, 64), dirty_pixel)
         px = i.load()
+        assert px is not None
         xdiv4 = i.size[0] // 4
         ydiv4 = i.size[1] // 4
         for y in range(ydiv4 * 2):
@@ -310,18 +332,20 @@ class TestCoreResampleAlphaCorrect:
                 px[x + xdiv4, y + ydiv4] = clean_pixel
         return i
 
-    def run_dirty_case(self, i, clean_pixel):
+    def run_dirty_case(self, i: Image.Image, clean_pixel: tuple[int, ...]) -> None:
         px = i.load()
+        assert px is not None
         for y in range(i.size[1]):
             for x in range(i.size[0]):
-                if px[x, y][-1] != 0 and px[x, y][:-1] != clean_pixel:
+                value = px[x, y]
+                assert isinstance(value, tuple)
+                if value[-1] != 0 and value[:-1] != clean_pixel:
                     message = (
-                        f"pixel at ({x}, {y}) is different:\n"
-                        f"{px[x, y]}\n{clean_pixel}"
+                        f"pixel at ({x}, {y}) is different:\n{value}\n{clean_pixel}"
                     )
-                    assert px[x, y][:3] == clean_pixel, message
+                    assert value[:3] == clean_pixel, message
 
-    def test_dirty_pixels_rgba(self):
+    def test_dirty_pixels_rgba(self) -> None:
         case = self.make_dirty_case("RGBA", (255, 255, 0, 128), (0, 0, 255, 0))
         self.run_dirty_case(case.resize((20, 20), Image.Resampling.BOX), (255, 255, 0))
         self.run_dirty_case(
@@ -337,7 +361,7 @@ class TestCoreResampleAlphaCorrect:
             case.resize((20, 20), Image.Resampling.LANCZOS), (255, 255, 0)
         )
 
-    def test_dirty_pixels_la(self):
+    def test_dirty_pixels_la(self) -> None:
         case = self.make_dirty_case("LA", (255, 128), (0, 0))
         self.run_dirty_case(case.resize((20, 20), Image.Resampling.BOX), (255,))
         self.run_dirty_case(case.resize((20, 20), Image.Resampling.BILINEAR), (255,))
@@ -348,27 +372,27 @@ class TestCoreResampleAlphaCorrect:
 
 class TestCoreResamplePasses:
     @contextmanager
-    def count(self, diff):
+    def count(self, diff: int) -> Generator[None, None, None]:
         count = Image.core.get_stats()["new_count"]
         yield
         assert Image.core.get_stats()["new_count"] - count == diff
 
-    def test_horizontal(self):
+    def test_horizontal(self) -> None:
         im = hopper("L")
         with self.count(1):
             im.resize((im.size[0] - 10, im.size[1]), Image.Resampling.BILINEAR)
 
-    def test_vertical(self):
+    def test_vertical(self) -> None:
         im = hopper("L")
         with self.count(1):
             im.resize((im.size[0], im.size[1] - 10), Image.Resampling.BILINEAR)
 
-    def test_both(self):
+    def test_both(self) -> None:
         im = hopper("L")
         with self.count(2):
             im.resize((im.size[0] - 10, im.size[1] - 10), Image.Resampling.BILINEAR)
 
-    def test_box_horizontal(self):
+    def test_box_horizontal(self) -> None:
         im = hopper("L")
         box = (20, 0, im.size[0] - 20, im.size[1])
         with self.count(1):
@@ -378,7 +402,7 @@ class TestCoreResamplePasses:
             cropped = im.crop(box).resize(im.size, Image.Resampling.BILINEAR)
         assert_image_similar(with_box, cropped, 0.1)
 
-    def test_box_vertical(self):
+    def test_box_vertical(self) -> None:
         im = hopper("L")
         box = (0, 20, im.size[0], im.size[1] - 20)
         with self.count(1):
@@ -390,7 +414,7 @@ class TestCoreResamplePasses:
 
 
 class TestCoreResampleCoefficients:
-    def test_reduce(self):
+    def test_reduce(self) -> None:
         test_color = 254
 
         for size in range(400000, 400010, 2):
@@ -399,10 +423,11 @@ class TestCoreResampleCoefficients:
             draw.rectangle((0, 0, i.size[0] // 2 - 1, 0), test_color)
 
             px = i.resize((5, i.size[1]), Image.Resampling.BICUBIC).load()
+            assert px is not None
             if px[2, 0] != test_color // 2:
                 assert test_color // 2 == px[2, 0]
 
-    def test_nonzero_coefficients(self):
+    def test_non_zero_coefficients(self) -> None:
         # regression test for the wrong coefficients calculation
         # due to bug https://github.com/python-pillow/Pillow/issues/2161
         im = Image.new("RGBA", (1280, 1280), (0x20, 0x40, 0x60, 0xFF))
@@ -430,7 +455,7 @@ class TestCoreResampleBox:
             Image.Resampling.LANCZOS,
         ),
     )
-    def test_wrong_arguments(self, resample):
+    def test_wrong_arguments(self, resample: Image.Resampling) -> None:
         im = hopper()
         im.resize((32, 32), resample, (0, 0, im.width, im.height))
         im.resize((32, 32), resample, (20, 20, im.width, im.height))
@@ -438,7 +463,7 @@ class TestCoreResampleBox:
         im.resize((32, 32), resample, (20, 20, 100, 20))
 
         with pytest.raises(TypeError, match="must be sequence of length 4"):
-            im.resize((32, 32), resample, (im.width, im.height))
+            im.resize((32, 32), resample, (im.width, im.height))  # type: ignore[arg-type]
 
         with pytest.raises(ValueError, match="can't be negative"):
             im.resize((32, 32), resample, (-20, 20, 100, 100))
@@ -457,8 +482,12 @@ class TestCoreResampleBox:
         with pytest.raises(ValueError, match="can't exceed"):
             im.resize((32, 32), resample, (0, 0, im.width, im.height + 1))
 
-    def resize_tiled(self, im, dst_size, xtiles, ytiles):
-        def split_range(size, tiles):
+    def resize_tiled(
+        self, im: Image.Image, dst_size: tuple[int, int], xtiles: int, ytiles: int
+    ) -> Image.Image:
+        def split_range(
+            size: int, tiles: int
+        ) -> Generator[tuple[int, int], None, None]:
             scale = size / tiles
             for i in range(tiles):
                 yield int(round(scale * i)), int(round(scale * (i + 1)))
@@ -476,7 +505,7 @@ class TestCoreResampleBox:
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )
-    def test_tiles(self):
+    def test_tiles(self) -> None:
         with Image.open("Tests/images/flower.jpg") as im:
             assert im.size == (480, 360)
             dst_size = (251, 188)
@@ -489,7 +518,7 @@ class TestCoreResampleBox:
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )
-    def test_subsample(self):
+    def test_subsample(self) -> None:
         # This test shows advantages of the subpixel resizing
         # after supersampling (e.g. during JPEG decoding).
         with Image.open("Tests/images/flower.jpg") as im:
@@ -516,14 +545,14 @@ class TestCoreResampleBox:
     @pytest.mark.parametrize(
         "resample", (Image.Resampling.NEAREST, Image.Resampling.BILINEAR)
     )
-    def test_formats(self, mode, resample):
+    def test_formats(self, mode: str, resample: Image.Resampling) -> None:
         im = hopper(mode)
         box = (20, 20, im.size[0] - 20, im.size[1] - 20)
         with_box = im.resize((32, 32), resample, box)
         cropped = im.crop(box).resize((32, 32), resample)
         assert_image_similar(cropped, with_box, 0.4)
 
-    def test_passthrough(self):
+    def test_passthrough(self) -> None:
         # When no resize is required
         im = hopper()
 
@@ -537,7 +566,7 @@ class TestCoreResampleBox:
             assert res.size == size
             assert_image_equal(res, im.crop(box), f">>> {size} {box}")
 
-    def test_no_passthrough(self):
+    def test_no_passthrough(self) -> None:
         # When resize is required
         im = hopper()
 
@@ -556,7 +585,7 @@ class TestCoreResampleBox:
     @pytest.mark.parametrize(
         "flt", (Image.Resampling.NEAREST, Image.Resampling.BICUBIC)
     )
-    def test_skip_horizontal(self, flt):
+    def test_skip_horizontal(self, flt: Image.Resampling) -> None:
         # Can skip resize for one dimension
         im = hopper()
 
@@ -579,7 +608,7 @@ class TestCoreResampleBox:
     @pytest.mark.parametrize(
         "flt", (Image.Resampling.NEAREST, Image.Resampling.BICUBIC)
     )
-    def test_skip_vertical(self, flt):
+    def test_skip_vertical(self, flt: Image.Resampling) -> None:
         # Can skip resize for one dimension
         im = hopper()
 
diff --git a/Tests/test_image_resize.py b/Tests/test_image_resize.py
index 83c54cf62..57fcf9a34 100644
--- a/Tests/test_image_resize.py
+++ b/Tests/test_image_resize.py
@@ -1,11 +1,16 @@
 """
 Tests for resize functionality.
 """
+
+from __future__ import annotations
+
+from collections.abc import Generator
 from itertools import permutations
+from pathlib import Path
 
 import pytest
 
-from PIL import Image
+from PIL import Image, ImageFile
 
 from .helper import (
     assert_image_equal,
@@ -17,7 +22,9 @@ from .helper import (
 
 
 class TestImagingCoreResize:
-    def resize(self, im, size, f):
+    def resize(
+        self, im: Image.Image, size: tuple[int, int], f: Image.Resampling
+    ) -> Image.Image:
         # Image class independent version of resize.
         im.load()
         return im._new(im.im.resize(size, f))
@@ -25,21 +32,31 @@ class TestImagingCoreResize:
     @pytest.mark.parametrize(
         "mode", ("1", "P", "L", "I", "F", "RGB", "RGBA", "CMYK", "YCbCr", "I;16")
     )
-    def test_nearest_mode(self, mode):
+    def test_nearest_mode(self, mode: str) -> None:
         im = hopper(mode)
         r = self.resize(im, (15, 12), Image.Resampling.NEAREST)
         assert r.mode == mode
         assert r.size == (15, 12)
         assert r.im.bands == im.im.bands
 
-    def test_convolution_modes(self):
+    def test_convolution_modes(self) -> None:
         with pytest.raises(ValueError):
             self.resize(hopper("1"), (15, 12), Image.Resampling.BILINEAR)
         with pytest.raises(ValueError):
             self.resize(hopper("P"), (15, 12), Image.Resampling.BILINEAR)
-        with pytest.raises(ValueError):
-            self.resize(hopper("I;16"), (15, 12), Image.Resampling.BILINEAR)
-        for mode in ["L", "I", "F", "RGB", "RGBA", "CMYK", "YCbCr"]:
+        for mode in [
+            "L",
+            "I",
+            "I;16",
+            "I;16L",
+            "I;16B",
+            "I;16N",
+            "F",
+            "RGB",
+            "RGBA",
+            "CMYK",
+            "YCbCr",
+        ]:
             im = hopper(mode)
             r = self.resize(im, (15, 12), Image.Resampling.BILINEAR)
             assert r.mode == mode
@@ -57,7 +74,7 @@ class TestImagingCoreResize:
             Image.Resampling.LANCZOS,
         ),
     )
-    def test_reduce_filters(self, resample):
+    def test_reduce_filters(self, resample: Image.Resampling) -> None:
         r = self.resize(hopper("RGB"), (15, 12), resample)
         assert r.mode == "RGB"
         assert r.size == (15, 12)
@@ -73,7 +90,7 @@ class TestImagingCoreResize:
             Image.Resampling.LANCZOS,
         ),
     )
-    def test_enlarge_filters(self, resample):
+    def test_enlarge_filters(self, resample: Image.Resampling) -> None:
         r = self.resize(hopper("RGB"), (212, 195), resample)
         assert r.mode == "RGB"
         assert r.size == (212, 195)
@@ -97,7 +114,9 @@ class TestImagingCoreResize:
             ("LA", ("filled", "dirty")),
         ),
     )
-    def test_endianness(self, resample, mode, channels_set):
+    def test_endianness(
+        self, resample: Image.Resampling, mode: str, channels_set: tuple[str, ...]
+    ) -> None:
         # Make an image with one colored pixel, in one channel.
         # When resized, that channel should be the same as a GS image.
         # Other channels should be unaffected.
@@ -137,17 +156,17 @@ class TestImagingCoreResize:
             Image.Resampling.LANCZOS,
         ),
     )
-    def test_enlarge_zero(self, resample):
+    def test_enlarge_zero(self, resample: Image.Resampling) -> None:
         r = self.resize(Image.new("RGB", (0, 0), "white"), (212, 195), resample)
         assert r.mode == "RGB"
         assert r.size == (212, 195)
         assert r.getdata()[0] == (0, 0, 0)
 
-    def test_unknown_filter(self):
+    def test_unknown_filter(self) -> None:
         with pytest.raises(ValueError):
-            self.resize(hopper(), (10, 10), 9)
+            self.resize(hopper(), (10, 10), 9)  # type: ignore[arg-type]
 
-    def test_cross_platform(self, tmp_path):
+    def test_cross_platform(self, tmp_path: Path) -> None:
         # This test is intended for only check for consistent behaviour across
         # platforms. So if a future Pillow change requires that the test file
         # be updated, that is okay.
@@ -160,7 +179,7 @@ class TestImagingCoreResize:
 
 
 @pytest.fixture
-def gradients_image():
+def gradients_image() -> Generator[ImageFile.ImageFile, None, None]:
     with Image.open("Tests/images/radial_gradients.png") as im:
         im.load()
     try:
@@ -170,7 +189,7 @@ def gradients_image():
 
 
 class TestReducingGapResize:
-    def test_reducing_gap_values(self, gradients_image):
+    def test_reducing_gap_values(self, gradients_image: ImageFile.ImageFile) -> None:
         ref = gradients_image.resize(
             (52, 34), Image.Resampling.BICUBIC, reducing_gap=None
         )
@@ -189,13 +208,18 @@ class TestReducingGapResize:
         "box, epsilon",
         ((None, 4), ((1.1, 2.2, 510.8, 510.9), 4), ((3, 10, 410, 256), 10)),
     )
-    def test_reducing_gap_1(self, gradients_image, box, epsilon):
+    def test_reducing_gap_1(
+        self,
+        gradients_image: ImageFile.ImageFile,
+        box: tuple[float, float, float, float],
+        epsilon: float,
+    ) -> None:
         ref = gradients_image.resize((52, 34), Image.Resampling.BICUBIC, box=box)
         im = gradients_image.resize(
             (52, 34), Image.Resampling.BICUBIC, box=box, reducing_gap=1.0
         )
 
-        with pytest.raises(AssertionError):
+        with pytest.raises(pytest.fail.Exception):
             assert_image_equal(ref, im)
 
         assert_image_similar(ref, im, epsilon)
@@ -204,13 +228,18 @@ class TestReducingGapResize:
         "box, epsilon",
         ((None, 1.5), ((1.1, 2.2, 510.8, 510.9), 1.5), ((3, 10, 410, 256), 1)),
     )
-    def test_reducing_gap_2(self, gradients_image, box, epsilon):
+    def test_reducing_gap_2(
+        self,
+        gradients_image: ImageFile.ImageFile,
+        box: tuple[float, float, float, float],
+        epsilon: float,
+    ) -> None:
         ref = gradients_image.resize((52, 34), Image.Resampling.BICUBIC, box=box)
         im = gradients_image.resize(
             (52, 34), Image.Resampling.BICUBIC, box=box, reducing_gap=2.0
         )
 
-        with pytest.raises(AssertionError):
+        with pytest.raises(pytest.fail.Exception):
             assert_image_equal(ref, im)
 
         assert_image_similar(ref, im, epsilon)
@@ -219,19 +248,28 @@ class TestReducingGapResize:
         "box, epsilon",
         ((None, 1), ((1.1, 2.2, 510.8, 510.9), 1), ((3, 10, 410, 256), 0.5)),
     )
-    def test_reducing_gap_3(self, gradients_image, box, epsilon):
+    def test_reducing_gap_3(
+        self,
+        gradients_image: ImageFile.ImageFile,
+        box: tuple[float, float, float, float],
+        epsilon: float,
+    ) -> None:
         ref = gradients_image.resize((52, 34), Image.Resampling.BICUBIC, box=box)
         im = gradients_image.resize(
             (52, 34), Image.Resampling.BICUBIC, box=box, reducing_gap=3.0
         )
 
-        with pytest.raises(AssertionError):
+        with pytest.raises(pytest.fail.Exception):
             assert_image_equal(ref, im)
 
         assert_image_similar(ref, im, epsilon)
 
     @pytest.mark.parametrize("box", (None, (1.1, 2.2, 510.8, 510.9), (3, 10, 410, 256)))
-    def test_reducing_gap_8(self, gradients_image, box):
+    def test_reducing_gap_8(
+        self,
+        gradients_image: ImageFile.ImageFile,
+        box: tuple[float, float, float, float],
+    ) -> None:
         ref = gradients_image.resize((52, 34), Image.Resampling.BICUBIC, box=box)
         im = gradients_image.resize(
             (52, 34), Image.Resampling.BICUBIC, box=box, reducing_gap=8.0
@@ -243,7 +281,12 @@ class TestReducingGapResize:
         "box, epsilon",
         (((0, 0, 512, 512), 5.5), ((0.9, 1.7, 128, 128), 9.5)),
     )
-    def test_box_filter(self, gradients_image, box, epsilon):
+    def test_box_filter(
+        self,
+        gradients_image: ImageFile.ImageFile,
+        box: tuple[float, float, float, float],
+        epsilon: float,
+    ) -> None:
         ref = gradients_image.resize((52, 34), Image.Resampling.BOX, box=box)
         im = gradients_image.resize(
             (52, 34), Image.Resampling.BOX, box=box, reducing_gap=1.0
@@ -253,15 +296,15 @@ class TestReducingGapResize:
 
 
 class TestImageResize:
-    def test_resize(self):
-        def resize(mode, size):
+    def test_resize(self) -> None:
+        def resize(mode: str, size: tuple[int, int] | list[int]) -> None:
             out = hopper(mode).resize(size)
             assert out.mode == mode
-            assert out.size == size
+            assert out.size == tuple(size)
 
         for mode in "1", "P", "L", "RGB", "I", "F":
             resize(mode, (112, 103))
-            resize(mode, (188, 214))
+            resize(mode, [188, 214])
 
         # Test unknown resampling filter
         with hopper() as im:
@@ -269,21 +312,19 @@ class TestImageResize:
                 im.resize((10, 10), "unknown")
 
     @skip_unless_feature("libtiff")
-    def test_load_first(self):
-        # load() may change the size of the image
-        # Test that resize() is calling it before getting the size
+    def test_transposed(self) -> None:
         with Image.open("Tests/images/g4_orientation_5.tif") as im:
             im = im.resize((64, 64))
             assert im.size == (64, 64)
 
-    @pytest.mark.parametrize("mode", ("L", "RGB", "I", "F"))
-    def test_default_filter_bicubic(self, mode):
+    @pytest.mark.parametrize(
+        "mode", ("L", "RGB", "I", "I;16", "I;16L", "I;16B", "I;16N", "F")
+    )
+    def test_default_filter_bicubic(self, mode: str) -> None:
         im = hopper(mode)
         assert im.resize((20, 20), Image.Resampling.BICUBIC) == im.resize((20, 20))
 
-    @pytest.mark.parametrize(
-        "mode", ("1", "P", "I;16", "I;16L", "I;16B", "BGR;15", "BGR;16")
-    )
-    def test_default_filter_nearest(self, mode):
+    @pytest.mark.parametrize("mode", ("1", "P", "BGR;15", "BGR;16"))
+    def test_default_filter_nearest(self, mode: str) -> None:
         im = hopper(mode)
         assert im.resize((20, 20), Image.Resampling.NEAREST) == im.resize((20, 20))
diff --git a/Tests/test_image_rotate.py b/Tests/test_image_rotate.py
index 82fe46b7d..252a15db7 100644
--- a/Tests/test_image_rotate.py
+++ b/Tests/test_image_rotate.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image
@@ -10,7 +12,13 @@ from .helper import (
 )
 
 
-def rotate(im, mode, angle, center=None, translate=None):
+def rotate(
+    im: Image.Image,
+    mode: str,
+    angle: int,
+    center: tuple[int, int] | None = None,
+    translate: tuple[int, int] | None = None,
+) -> None:
     out = im.rotate(angle, center=center, translate=translate)
     assert out.mode == mode
     assert out.size == im.size  # default rotate clips output
@@ -25,13 +33,13 @@ def rotate(im, mode, angle, center=None, translate=None):
 
 
 @pytest.mark.parametrize("mode", ("1", "P", "L", "RGB", "I", "F"))
-def test_mode(mode):
+def test_mode(mode: str) -> None:
     im = hopper(mode)
     rotate(im, mode, 45)
 
 
 @pytest.mark.parametrize("angle", (0, 90, 180, 270))
-def test_angle(angle):
+def test_angle(angle: int) -> None:
     with Image.open("Tests/images/test-card.png") as im:
         rotate(im, im.mode, angle)
 
@@ -40,12 +48,12 @@ def test_angle(angle):
 
 
 @pytest.mark.parametrize("angle", (0, 45, 90, 180, 270))
-def test_zero(angle):
+def test_zero(angle: int) -> None:
     im = Image.new("RGB", (0, 0))
     rotate(im, im.mode, angle)
 
 
-def test_resample():
+def test_resample() -> None:
     # Target image creation, inspected by eye.
     # >>> im = Image.open('Tests/images/hopper.ppm')
     # >>> im = im.rotate(45, resample=Image.Resampling.BICUBIC, expand=True)
@@ -62,7 +70,7 @@ def test_resample():
             assert_image_similar(im, target, epsilon)
 
 
-def test_center_0():
+def test_center_0() -> None:
     im = hopper()
     im = im.rotate(45, center=(0, 0), resample=Image.Resampling.BICUBIC)
 
@@ -73,7 +81,7 @@ def test_center_0():
     assert_image_similar(im, target, 15)
 
 
-def test_center_14():
+def test_center_14() -> None:
     im = hopper()
     im = im.rotate(45, center=(14, 14), resample=Image.Resampling.BICUBIC)
 
@@ -84,7 +92,7 @@ def test_center_14():
         assert_image_similar(im, target, 10)
 
 
-def test_translate():
+def test_translate() -> None:
     im = hopper()
     with Image.open("Tests/images/hopper_45.png") as target:
         target_origin = (target.size[1] / 2 - 64) - 5
@@ -97,7 +105,7 @@ def test_translate():
     assert_image_similar(im, target, 1)
 
 
-def test_fastpath_center():
+def test_fastpath_center() -> None:
     # if the center is -1,-1 and we rotate by 90<=x<=270 the
     # resulting image should be black
     for angle in (90, 180, 270):
@@ -105,7 +113,7 @@ def test_fastpath_center():
         assert_image_equal(im, Image.new("RGB", im.size, "black"))
 
 
-def test_fastpath_translate():
+def test_fastpath_translate() -> None:
     # if we post-translate by -128
     # resulting image should be black
     for angle in (0, 90, 180, 270):
@@ -113,26 +121,26 @@ def test_fastpath_translate():
         assert_image_equal(im, Image.new("RGB", im.size, "black"))
 
 
-def test_center():
+def test_center() -> None:
     im = hopper()
     rotate(im, im.mode, 45, center=(0, 0))
-    rotate(im, im.mode, 45, translate=(im.size[0] / 2, 0))
-    rotate(im, im.mode, 45, center=(0, 0), translate=(im.size[0] / 2, 0))
+    rotate(im, im.mode, 45, translate=(im.size[0] // 2, 0))
+    rotate(im, im.mode, 45, center=(0, 0), translate=(im.size[0] // 2, 0))
 
 
-def test_rotate_no_fill():
+def test_rotate_no_fill() -> None:
     im = Image.new("RGB", (100, 100), "green")
     im = im.rotate(45)
     assert_image_equal_tofile(im, "Tests/images/rotate_45_no_fill.png")
 
 
-def test_rotate_with_fill():
+def test_rotate_with_fill() -> None:
     im = Image.new("RGB", (100, 100), "green")
     im = im.rotate(45, fillcolor="white")
     assert_image_equal_tofile(im, "Tests/images/rotate_45_with_fill.png")
 
 
-def test_alpha_rotate_no_fill():
+def test_alpha_rotate_no_fill() -> None:
     # Alpha images are handled differently internally
     im = Image.new("RGBA", (10, 10), "green")
     im = im.rotate(45, expand=1)
@@ -140,7 +148,7 @@ def test_alpha_rotate_no_fill():
     assert corner == (0, 0, 0, 0)
 
 
-def test_alpha_rotate_with_fill():
+def test_alpha_rotate_with_fill() -> None:
     # Alpha images are handled differently internally
     im = Image.new("RGBA", (10, 10), "green")
     im = im.rotate(45, expand=1, fillcolor=(255, 0, 0, 255))
diff --git a/Tests/test_image_split.py b/Tests/test_image_split.py
index 5cb7c9a8b..3385f81f5 100644
--- a/Tests/test_image_split.py
+++ b/Tests/test_image_split.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+from pathlib import Path
+
 import pytest
 
 from PIL import Image, features
@@ -5,8 +9,8 @@ from PIL import Image, features
 from .helper import assert_image_equal, hopper
 
 
-def test_split():
-    def split(mode):
+def test_split() -> None:
+    def split(mode: str) -> list[tuple[str, int, int]]:
         layers = hopper(mode).split()
         return [(i.mode, i.size[0], i.size[1]) for i in layers]
 
@@ -34,18 +38,18 @@ def test_split():
 @pytest.mark.parametrize(
     "mode", ("1", "L", "I", "F", "P", "RGB", "RGBA", "CMYK", "YCbCr")
 )
-def test_split_merge(mode):
+def test_split_merge(mode: str) -> None:
     expected = Image.merge(mode, hopper(mode).split())
     assert_image_equal(hopper(mode), expected)
 
 
-def test_split_open(tmp_path):
+def test_split_open(tmp_path: Path) -> None:
     if features.check("zlib"):
         test_file = str(tmp_path / "temp.png")
     else:
         test_file = str(tmp_path / "temp.pcx")
 
-    def split_open(mode):
+    def split_open(mode: str) -> int:
         hopper(mode).save(test_file)
         with Image.open(test_file) as im:
             return len(im.split())
diff --git a/Tests/test_image_thumbnail.py b/Tests/test_image_thumbnail.py
index 4fd07a2b4..01bd4b1d7 100644
--- a/Tests/test_image_thumbnail.py
+++ b/Tests/test_image_thumbnail.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image
@@ -12,14 +14,14 @@ from .helper import (
 )
 
 
-def test_sanity():
+def test_sanity() -> None:
     im = hopper()
-    assert im.thumbnail((100, 100)) is None
+    im.thumbnail((100, 100))
 
     assert im.size == (100, 100)
 
 
-def test_aspect():
+def test_aspect() -> None:
     im = Image.new("L", (128, 128))
     im.thumbnail((100, 100))
     assert im.size == (100, 100)
@@ -65,19 +67,19 @@ def test_aspect():
     assert im.size == (75, 23)  # ratio is 3.260869565217
 
 
-def test_division_by_zero():
+def test_division_by_zero() -> None:
     im = Image.new("L", (200, 2))
     im.thumbnail((75, 75))
     assert im.size == (75, 1)
 
 
-def test_float():
+def test_float() -> None:
     im = Image.new("L", (128, 128))
     im.thumbnail((99.9, 99.9))
     assert im.size == (99, 99)
 
 
-def test_no_resize():
+def test_no_resize() -> None:
     # Check that draft() can resize the image to the destination size
     with Image.open("Tests/images/hopper.jpg") as im:
         im.draft(None, (64, 64))
@@ -90,26 +92,26 @@ def test_no_resize():
 
 
 @skip_unless_feature("libtiff")
-def test_load_first():
-    # load() may change the size of the image
-    # Test that thumbnail() is calling it before performing size calculations
+def test_transposed() -> None:
     with Image.open("Tests/images/g4_orientation_5.tif") as im:
+        assert im.size == (590, 88)
+
         im.thumbnail((64, 64))
         assert im.size == (64, 10)
 
-    # Test thumbnail(), without draft(),
-    # on an image that is large enough once load() has changed the size
     with Image.open("Tests/images/g4_orientation_5.tif") as im:
         im.thumbnail((590, 88), reducing_gap=None)
         assert im.size == (590, 88)
 
 
-def test_load_first_unless_jpeg():
+def test_load_first_unless_jpeg() -> None:
     # Test that thumbnail() still uses draft() for JPEG
     with Image.open("Tests/images/hopper.jpg") as im:
         draft = im.draft
 
-        def im_draft(mode, size):
+        def im_draft(
+            mode: str, size: tuple[int, int]
+        ) -> tuple[str, tuple[int, int, float, float]] | None:
             result = draft(mode, size)
             assert result is not None
 
@@ -122,7 +124,7 @@ def test_load_first_unless_jpeg():
 
 # valgrind test is failing with memory allocated in libjpeg
 @pytest.mark.valgrind_known_error(reason="Known Failing")
-def test_DCT_scaling_edges():
+def test_DCT_scaling_edges() -> None:
     # Make an image with red borders and size (N * 8) + 1 to cross DCT grid
     im = Image.new("RGB", (257, 257), "red")
     im.paste(Image.new("RGB", (235, 235)), (11, 11))
@@ -136,7 +138,7 @@ def test_DCT_scaling_edges():
     assert_image_similar(thumb, ref, 1.5)
 
 
-def test_reducing_gap_values():
+def test_reducing_gap_values() -> None:
     im = hopper()
     im.thumbnail((18, 18), Image.Resampling.BICUBIC)
 
@@ -147,13 +149,13 @@ def test_reducing_gap_values():
 
     ref = hopper()
     ref.thumbnail((18, 18), Image.Resampling.BICUBIC, reducing_gap=None)
-    with pytest.raises(AssertionError):
+    with pytest.raises(pytest.fail.Exception):
         assert_image_equal(ref, im)
 
     assert_image_similar(ref, im, 3.5)
 
 
-def test_reducing_gap_for_DCT_scaling():
+def test_reducing_gap_for_DCT_scaling() -> None:
     with Image.open("Tests/images/hopper.jpg") as ref:
         # thumbnail should call draft with reducing_gap scale
         ref.draft(None, (18 * 3, 18 * 3))
diff --git a/Tests/test_image_tobitmap.py b/Tests/test_image_tobitmap.py
index a12ce329f..f7a3cc41d 100644
--- a/Tests/test_image_tobitmap.py
+++ b/Tests/test_image_tobitmap.py
@@ -1,9 +1,11 @@
+from __future__ import annotations
+
 import pytest
 
 from .helper import assert_image_equal, fromstring, hopper
 
 
-def test_sanity():
+def test_sanity() -> None:
     with pytest.raises(ValueError):
         hopper().tobitmap()
 
diff --git a/Tests/test_image_tobytes.py b/Tests/test_image_tobytes.py
index 31e1c0080..d32b6c09b 100644
--- a/Tests/test_image_tobytes.py
+++ b/Tests/test_image_tobytes.py
@@ -1,6 +1,8 @@
+from __future__ import annotations
+
 from .helper import hopper
 
 
-def test_sanity():
+def test_sanity() -> None:
     data = hopper().tobytes()
     assert isinstance(data, bytes)
diff --git a/Tests/test_image_transform.py b/Tests/test_image_transform.py
index 64a5c9459..7e83396de 100644
--- a/Tests/test_image_transform.py
+++ b/Tests/test_image_transform.py
@@ -1,4 +1,7 @@
+from __future__ import annotations
+
 import math
+from typing import Callable
 
 import pytest
 
@@ -8,21 +11,28 @@ from .helper import assert_image_equal, assert_image_similar, hopper
 
 
 class TestImageTransform:
-    def test_sanity(self):
-        im = Image.new("L", (100, 100))
+    def test_sanity(self) -> None:
+        im = hopper()
 
-        seq = tuple(range(10))
+        for transform in (
+            ImageTransform.AffineTransform((1, 0, 0, 0, 1, 0)),
+            ImageTransform.PerspectiveTransform((1, 0, 0, 0, 1, 0, 0, 0)),
+            ImageTransform.ExtentTransform((0, 0) + im.size),
+            ImageTransform.QuadTransform(
+                (0, 0, 0, im.height, im.width, im.height, im.width, 0)
+            ),
+            ImageTransform.MeshTransform(
+                [
+                    (
+                        (0, 0) + im.size,
+                        (0, 0, 0, im.height, im.width, im.height, im.width, 0),
+                    )
+                ]
+            ),
+        ):
+            assert_image_equal(im, im.transform(im.size, transform))
 
-        transform = ImageTransform.AffineTransform(seq[:6])
-        im.transform((100, 100), transform)
-        transform = ImageTransform.ExtentTransform(seq[:4])
-        im.transform((100, 100), transform)
-        transform = ImageTransform.QuadTransform(seq[:8])
-        im.transform((100, 100), transform)
-        transform = ImageTransform.MeshTransform([(seq[:4], seq[:8])])
-        im.transform((100, 100), transform)
-
-    def test_info(self):
+    def test_info(self) -> None:
         comment = b"File written by Adobe Photoshop\xa8 4.0"
 
         with Image.open("Tests/images/hopper.gif") as im:
@@ -32,14 +42,14 @@ class TestImageTransform:
             new_im = im.transform((100, 100), transform)
         assert new_im.info["comment"] == comment
 
-    def test_palette(self):
+    def test_palette(self) -> None:
         with Image.open("Tests/images/hopper.gif") as im:
             transformed = im.transform(
                 im.size, Image.Transform.AFFINE, [1, 0, 0, 0, 1, 0]
             )
             assert im.palette.palette == transformed.palette.palette
 
-    def test_extent(self):
+    def test_extent(self) -> None:
         im = hopper("RGB")
         (w, h) = im.size
         transformed = im.transform(
@@ -54,7 +64,7 @@ class TestImageTransform:
         # undone -- precision?
         assert_image_similar(transformed, scaled, 23)
 
-    def test_quad(self):
+    def test_quad(self) -> None:
         # one simple quad transform, equivalent to scale & crop upper left quad
         im = hopper("RGB")
         (w, h) = im.size
@@ -82,7 +92,7 @@ class TestImageTransform:
             ("LA", (76, 0)),
         ),
     )
-    def test_fill(self, mode, expected_pixel):
+    def test_fill(self, mode: str, expected_pixel: tuple[int, ...]) -> None:
         im = hopper(mode)
         (w, h) = im.size
         transformed = im.transform(
@@ -94,7 +104,7 @@ class TestImageTransform:
         )
         assert transformed.getpixel((w - 1, h - 1)) == expected_pixel
 
-    def test_mesh(self):
+    def test_mesh(self) -> None:
         # this should be a checkerboard of halfsized hoppers in ul, lr
         im = hopper("RGBA")
         (w, h) = im.size
@@ -133,7 +143,9 @@ class TestImageTransform:
         assert_image_equal(blank, transformed.crop((w // 2, 0, w, h // 2)))
         assert_image_equal(blank, transformed.crop((0, h // 2, w // 2, h)))
 
-    def _test_alpha_premult(self, op):
+    def _test_alpha_premult(
+        self, op: Callable[[Image.Image, tuple[int, int]], Image.Image]
+    ) -> None:
         # create image with half white, half black,
         # with the black half transparent.
         # do op,
@@ -149,14 +161,14 @@ class TestImageTransform:
         hist = im_background.histogram()
         assert 40 * 10 == hist[-1]
 
-    def test_alpha_premult_resize(self):
-        def op(im, sz):
+    def test_alpha_premult_resize(self) -> None:
+        def op(im: Image.Image, sz: tuple[int, int]) -> Image.Image:
             return im.resize(sz, Image.Resampling.BILINEAR)
 
         self._test_alpha_premult(op)
 
-    def test_alpha_premult_transform(self):
-        def op(im, sz):
+    def test_alpha_premult_transform(self) -> None:
+        def op(im: Image.Image, sz: tuple[int, int]) -> Image.Image:
             (w, h) = im.size
             return im.transform(
                 sz, Image.Transform.EXTENT, (0, 0, w, h), Image.Resampling.BILINEAR
@@ -164,7 +176,9 @@ class TestImageTransform:
 
         self._test_alpha_premult(op)
 
-    def _test_nearest(self, op, mode):
+    def _test_nearest(
+        self, op: Callable[[Image.Image, tuple[int, int]], Image.Image], mode: str
+    ) -> None:
         # create white image with half transparent,
         # do op,
         # the image should remain white with half transparent
@@ -178,8 +192,9 @@ class TestImageTransform:
 
         im = op(im, (40, 10))
 
-        colors = sorted(im.getcolors())
-        assert colors == sorted(
+        colors = im.getcolors()
+        assert colors is not None
+        assert sorted(colors) == sorted(
             (
                 (20 * 10, opaque),
                 (20 * 10, transparent),
@@ -187,15 +202,15 @@ class TestImageTransform:
         )
 
     @pytest.mark.parametrize("mode", ("RGBA", "LA"))
-    def test_nearest_resize(self, mode):
-        def op(im, sz):
+    def test_nearest_resize(self, mode: str) -> None:
+        def op(im: Image.Image, sz: tuple[int, int]) -> Image.Image:
             return im.resize(sz, Image.Resampling.NEAREST)
 
         self._test_nearest(op, mode)
 
     @pytest.mark.parametrize("mode", ("RGBA", "LA"))
-    def test_nearest_transform(self, mode):
-        def op(im, sz):
+    def test_nearest_transform(self, mode: str) -> None:
+        def op(im: Image.Image, sz: tuple[int, int]) -> Image.Image:
             (w, h) = im.size
             return im.transform(
                 sz, Image.Transform.EXTENT, (0, 0, w, h), Image.Resampling.NEAREST
@@ -203,7 +218,7 @@ class TestImageTransform:
 
         self._test_nearest(op, mode)
 
-    def test_blank_fill(self):
+    def test_blank_fill(self) -> None:
         # attempting to hit
         # https://github.com/python-pillow/Pillow/issues/254 reported
         #
@@ -218,20 +233,22 @@ class TestImageTransform:
         # Running by default, but I'd totally understand not doing it in
         # the future
 
-        pattern = [Image.new("RGBA", (1024, 1024), (a, a, a, a)) for a in range(1, 65)]
+        pattern: list[Image.Image] | None = [
+            Image.new("RGBA", (1024, 1024), (a, a, a, a)) for a in range(1, 65)
+        ]
 
         # Yeah. Watch some JIT optimize this out.
         pattern = None  # noqa: F841
 
         self.test_mesh()
 
-    def test_missing_method_data(self):
+    def test_missing_method_data(self) -> None:
         with hopper() as im:
             with pytest.raises(ValueError):
                 im.transform((100, 100), None)
 
     @pytest.mark.parametrize("resample", (Image.Resampling.BOX, "unknown"))
-    def test_unknown_resampling_filter(self, resample):
+    def test_unknown_resampling_filter(self, resample: Image.Resampling | str) -> None:
         with hopper() as im:
             (w, h) = im.size
             with pytest.raises(ValueError):
@@ -241,7 +258,7 @@ class TestImageTransform:
 class TestImageTransformAffine:
     transform = Image.Transform.AFFINE
 
-    def _test_image(self):
+    def _test_image(self) -> Image.Image:
         im = hopper("RGB")
         return im.crop((10, 20, im.width - 10, im.height - 20))
 
@@ -254,7 +271,7 @@ class TestImageTransformAffine:
             (270, Image.Transpose.ROTATE_270),
         ),
     )
-    def test_rotate(self, deg, transpose):
+    def test_rotate(self, deg: int, transpose: Image.Transpose | None) -> None:
         im = self._test_image()
 
         angle = -math.radians(deg)
@@ -304,7 +321,13 @@ class TestImageTransformAffine:
             (Image.Resampling.BICUBIC, 1),
         ),
     )
-    def test_resize(self, scale, epsilon_scale, resample, epsilon):
+    def test_resize(
+        self,
+        scale: float,
+        epsilon_scale: float,
+        resample: Image.Resampling,
+        epsilon: int,
+    ) -> None:
         im = self._test_image()
 
         size_up = int(round(im.width * scale)), int(round(im.height * scale))
@@ -333,7 +356,14 @@ class TestImageTransformAffine:
             (Image.Resampling.BICUBIC, 1),
         ),
     )
-    def test_translate(self, x, y, epsilon_scale, resample, epsilon):
+    def test_translate(
+        self,
+        x: float,
+        y: float,
+        epsilon_scale: float,
+        resample: Image.Resampling,
+        epsilon: float,
+    ) -> None:
         im = self._test_image()
 
         size_up = int(round(im.width + x)), int(round(im.height + y))
diff --git a/Tests/test_image_transpose.py b/Tests/test_image_transpose.py
index 877f439ca..d384d8141 100644
--- a/Tests/test_image_transpose.py
+++ b/Tests/test_image_transpose.py
@@ -1,5 +1,8 @@
+from __future__ import annotations
+
 import pytest
 
+from PIL import Image
 from PIL.Image import Transpose
 
 from . import helper
@@ -12,7 +15,7 @@ HOPPER = {
 
 
 @pytest.mark.parametrize("mode", HOPPER)
-def test_flip_left_right(mode):
+def test_flip_left_right(mode: str) -> None:
     im = HOPPER[mode]
     out = im.transpose(Transpose.FLIP_LEFT_RIGHT)
     assert out.mode == mode
@@ -26,7 +29,7 @@ def test_flip_left_right(mode):
 
 
 @pytest.mark.parametrize("mode", HOPPER)
-def test_flip_top_bottom(mode):
+def test_flip_top_bottom(mode: str) -> None:
     im = HOPPER[mode]
     out = im.transpose(Transpose.FLIP_TOP_BOTTOM)
     assert out.mode == mode
@@ -40,7 +43,7 @@ def test_flip_top_bottom(mode):
 
 
 @pytest.mark.parametrize("mode", HOPPER)
-def test_rotate_90(mode):
+def test_rotate_90(mode: str) -> None:
     im = HOPPER[mode]
     out = im.transpose(Transpose.ROTATE_90)
     assert out.mode == mode
@@ -54,7 +57,7 @@ def test_rotate_90(mode):
 
 
 @pytest.mark.parametrize("mode", HOPPER)
-def test_rotate_180(mode):
+def test_rotate_180(mode: str) -> None:
     im = HOPPER[mode]
     out = im.transpose(Transpose.ROTATE_180)
     assert out.mode == mode
@@ -68,7 +71,7 @@ def test_rotate_180(mode):
 
 
 @pytest.mark.parametrize("mode", HOPPER)
-def test_rotate_270(mode):
+def test_rotate_270(mode: str) -> None:
     im = HOPPER[mode]
     out = im.transpose(Transpose.ROTATE_270)
     assert out.mode == mode
@@ -82,7 +85,7 @@ def test_rotate_270(mode):
 
 
 @pytest.mark.parametrize("mode", HOPPER)
-def test_transpose(mode):
+def test_transpose(mode: str) -> None:
     im = HOPPER[mode]
     out = im.transpose(Transpose.TRANSPOSE)
     assert out.mode == mode
@@ -96,7 +99,7 @@ def test_transpose(mode):
 
 
 @pytest.mark.parametrize("mode", HOPPER)
-def test_tranverse(mode):
+def test_tranverse(mode: str) -> None:
     im = HOPPER[mode]
     out = im.transpose(Transpose.TRANSVERSE)
     assert out.mode == mode
@@ -110,10 +113,10 @@ def test_tranverse(mode):
 
 
 @pytest.mark.parametrize("mode", HOPPER)
-def test_roundtrip(mode):
+def test_roundtrip(mode: str) -> None:
     im = HOPPER[mode]
 
-    def transpose(first, second):
+    def transpose(first: Transpose, second: Transpose) -> Image.Image:
         return im.transpose(first).transpose(second)
 
     assert_image_equal(
diff --git a/Tests/test_imagechops.py b/Tests/test_imagechops.py
index d0fea3854..4309214f5 100644
--- a/Tests/test_imagechops.py
+++ b/Tests/test_imagechops.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+from typing import Callable
+
 from PIL import Image, ImageChops
 
 from .helper import assert_image_equal, hopper
@@ -10,10 +14,10 @@ GREEN = (0, 255, 0)
 ORANGE = (255, 128, 0)
 WHITE = (255, 255, 255)
 
-GREY = 128
+GRAY = 128
 
 
-def test_sanity():
+def test_sanity() -> None:
     im = hopper("L")
 
     ImageChops.constant(im, 128)
@@ -46,7 +50,7 @@ def test_sanity():
     ImageChops.offset(im, 10, 20)
 
 
-def test_add():
+def test_add() -> None:
     # Arrange
     with Image.open("Tests/images/imagedraw_ellipse_RGB.png") as im1:
         with Image.open("Tests/images/imagedraw_floodfill_RGB.png") as im2:
@@ -58,7 +62,7 @@ def test_add():
     assert new.getpixel((50, 50)) == ORANGE
 
 
-def test_add_scale_offset():
+def test_add_scale_offset() -> None:
     # Arrange
     with Image.open("Tests/images/imagedraw_ellipse_RGB.png") as im1:
         with Image.open("Tests/images/imagedraw_floodfill_RGB.png") as im2:
@@ -70,7 +74,7 @@ def test_add_scale_offset():
     assert new.getpixel((50, 50)) == (202, 151, 100)
 
 
-def test_add_clip():
+def test_add_clip() -> None:
     # Arrange
     im = hopper()
 
@@ -81,7 +85,7 @@ def test_add_clip():
     assert new.getpixel((50, 50)) == (255, 255, 254)
 
 
-def test_add_modulo():
+def test_add_modulo() -> None:
     # Arrange
     with Image.open("Tests/images/imagedraw_ellipse_RGB.png") as im1:
         with Image.open("Tests/images/imagedraw_floodfill_RGB.png") as im2:
@@ -93,7 +97,7 @@ def test_add_modulo():
     assert new.getpixel((50, 50)) == ORANGE
 
 
-def test_add_modulo_no_clip():
+def test_add_modulo_no_clip() -> None:
     # Arrange
     im = hopper()
 
@@ -104,7 +108,7 @@ def test_add_modulo_no_clip():
     assert new.getpixel((50, 50)) == (224, 76, 254)
 
 
-def test_blend():
+def test_blend() -> None:
     # Arrange
     with Image.open("Tests/images/imagedraw_ellipse_RGB.png") as im1:
         with Image.open("Tests/images/imagedraw_floodfill_RGB.png") as im2:
@@ -116,20 +120,20 @@ def test_blend():
     assert new.getpixel((50, 50)) == BROWN
 
 
-def test_constant():
+def test_constant() -> None:
     # Arrange
     im = Image.new("RGB", (20, 10))
 
     # Act
-    new = ImageChops.constant(im, GREY)
+    new = ImageChops.constant(im, GRAY)
 
     # Assert
     assert new.size == im.size
-    assert new.getpixel((0, 0)) == GREY
-    assert new.getpixel((19, 9)) == GREY
+    assert new.getpixel((0, 0)) == GRAY
+    assert new.getpixel((19, 9)) == GRAY
 
 
-def test_darker_image():
+def test_darker_image() -> None:
     # Arrange
     with Image.open("Tests/images/imagedraw_chord_RGB.png") as im1:
         with Image.open("Tests/images/imagedraw_outline_chord_RGB.png") as im2:
@@ -140,7 +144,7 @@ def test_darker_image():
             assert_image_equal(new, im2)
 
 
-def test_darker_pixel():
+def test_darker_pixel() -> None:
     # Arrange
     im1 = hopper()
     with Image.open("Tests/images/imagedraw_chord_RGB.png") as im2:
@@ -151,7 +155,7 @@ def test_darker_pixel():
     assert new.getpixel((50, 50)) == (240, 166, 0)
 
 
-def test_difference():
+def test_difference() -> None:
     # Arrange
     with Image.open("Tests/images/imagedraw_arc_end_le_start.png") as im1:
         with Image.open("Tests/images/imagedraw_arc_no_loops.png") as im2:
@@ -162,7 +166,7 @@ def test_difference():
     assert new.getbbox() == (25, 25, 76, 76)
 
 
-def test_difference_pixel():
+def test_difference_pixel() -> None:
     # Arrange
     im1 = hopper()
     with Image.open("Tests/images/imagedraw_polygon_kite_RGB.png") as im2:
@@ -173,7 +177,7 @@ def test_difference_pixel():
     assert new.getpixel((50, 50)) == (240, 166, 128)
 
 
-def test_duplicate():
+def test_duplicate() -> None:
     # Arrange
     im = hopper()
 
@@ -184,7 +188,7 @@ def test_duplicate():
     assert_image_equal(new, im)
 
 
-def test_invert():
+def test_invert() -> None:
     # Arrange
     with Image.open("Tests/images/imagedraw_floodfill_RGB.png") as im:
         # Act
@@ -196,7 +200,7 @@ def test_invert():
     assert new.getpixel((50, 50)) == CYAN
 
 
-def test_lighter_image():
+def test_lighter_image() -> None:
     # Arrange
     with Image.open("Tests/images/imagedraw_chord_RGB.png") as im1:
         with Image.open("Tests/images/imagedraw_outline_chord_RGB.png") as im2:
@@ -207,7 +211,7 @@ def test_lighter_image():
         assert_image_equal(new, im1)
 
 
-def test_lighter_pixel():
+def test_lighter_pixel() -> None:
     # Arrange
     im1 = hopper()
     with Image.open("Tests/images/imagedraw_chord_RGB.png") as im2:
@@ -218,7 +222,7 @@ def test_lighter_pixel():
     assert new.getpixel((50, 50)) == (255, 255, 127)
 
 
-def test_multiply_black():
+def test_multiply_black() -> None:
     """If you multiply an image with a solid black image,
     the result is black."""
     # Arrange
@@ -232,7 +236,7 @@ def test_multiply_black():
     assert_image_equal(new, black)
 
 
-def test_multiply_green():
+def test_multiply_green() -> None:
     # Arrange
     with Image.open("Tests/images/imagedraw_floodfill_RGB.png") as im:
         green = Image.new("RGB", im.size, "green")
@@ -246,7 +250,7 @@ def test_multiply_green():
     assert new.getpixel((50, 50)) == BLACK
 
 
-def test_multiply_white():
+def test_multiply_white() -> None:
     """If you multiply with a solid white image, the image is unaffected."""
     # Arrange
     im1 = hopper()
@@ -259,7 +263,7 @@ def test_multiply_white():
     assert_image_equal(new, im1)
 
 
-def test_offset():
+def test_offset() -> None:
     # Arrange
     xoffset = 45
     yoffset = 20
@@ -276,7 +280,7 @@ def test_offset():
         assert ImageChops.offset(im, xoffset) == ImageChops.offset(im, xoffset, xoffset)
 
 
-def test_screen():
+def test_screen() -> None:
     # Arrange
     with Image.open("Tests/images/imagedraw_ellipse_RGB.png") as im1:
         with Image.open("Tests/images/imagedraw_floodfill_RGB.png") as im2:
@@ -288,7 +292,7 @@ def test_screen():
     assert new.getpixel((50, 50)) == ORANGE
 
 
-def test_subtract():
+def test_subtract() -> None:
     # Arrange
     with Image.open("Tests/images/imagedraw_chord_RGB.png") as im1:
         with Image.open("Tests/images/imagedraw_outline_chord_RGB.png") as im2:
@@ -301,7 +305,7 @@ def test_subtract():
     assert new.getpixel((50, 52)) == BLACK
 
 
-def test_subtract_scale_offset():
+def test_subtract_scale_offset() -> None:
     # Arrange
     with Image.open("Tests/images/imagedraw_chord_RGB.png") as im1:
         with Image.open("Tests/images/imagedraw_outline_chord_RGB.png") as im2:
@@ -313,7 +317,7 @@ def test_subtract_scale_offset():
     assert new.getpixel((50, 50)) == (100, 202, 100)
 
 
-def test_subtract_clip():
+def test_subtract_clip() -> None:
     # Arrange
     im1 = hopper()
     with Image.open("Tests/images/imagedraw_chord_RGB.png") as im2:
@@ -324,7 +328,7 @@ def test_subtract_clip():
     assert new.getpixel((50, 50)) == (0, 0, 127)
 
 
-def test_subtract_modulo():
+def test_subtract_modulo() -> None:
     # Arrange
     with Image.open("Tests/images/imagedraw_chord_RGB.png") as im1:
         with Image.open("Tests/images/imagedraw_outline_chord_RGB.png") as im2:
@@ -337,7 +341,7 @@ def test_subtract_modulo():
     assert new.getpixel((50, 52)) == BLACK
 
 
-def test_subtract_modulo_no_clip():
+def test_subtract_modulo_no_clip() -> None:
     # Arrange
     im1 = hopper()
     with Image.open("Tests/images/imagedraw_chord_RGB.png") as im2:
@@ -348,7 +352,7 @@ def test_subtract_modulo_no_clip():
     assert new.getpixel((50, 50)) == (241, 167, 127)
 
 
-def test_soft_light():
+def test_soft_light() -> None:
     # Arrange
     with Image.open("Tests/images/hopper.png") as im1:
         with Image.open("Tests/images/hopper-XYZ.png") as im2:
@@ -360,7 +364,7 @@ def test_soft_light():
     assert new.getpixel((15, 100)) == (1, 1, 3)
 
 
-def test_hard_light():
+def test_hard_light() -> None:
     # Arrange
     with Image.open("Tests/images/hopper.png") as im1:
         with Image.open("Tests/images/hopper-XYZ.png") as im2:
@@ -372,7 +376,7 @@ def test_hard_light():
     assert new.getpixel((15, 100)) == (1, 1, 2)
 
 
-def test_overlay():
+def test_overlay() -> None:
     # Arrange
     with Image.open("Tests/images/hopper.png") as im1:
         with Image.open("Tests/images/hopper-XYZ.png") as im2:
@@ -384,24 +388,29 @@ def test_overlay():
     assert new.getpixel((15, 100)) == (1, 1, 2)
 
 
-def test_logical():
-    def table(op, a, b):
+def test_logical() -> None:
+    def table(
+        op: Callable[[Image.Image, Image.Image], Image.Image], a: int, b: int
+    ) -> list[float]:
         out = []
         for x in (a, b):
             imx = Image.new("1", (1, 1), x)
             for y in (a, b):
                 imy = Image.new("1", (1, 1), y)
-                out.append(op(imx, imy).getpixel((0, 0)))
-        return tuple(out)
+                value = op(imx, imy).getpixel((0, 0))
+                assert not isinstance(value, tuple)
+                assert value is not None
+                out.append(value)
+        return out
 
-    assert table(ImageChops.logical_and, 0, 1) == (0, 0, 0, 255)
-    assert table(ImageChops.logical_or, 0, 1) == (0, 255, 255, 255)
-    assert table(ImageChops.logical_xor, 0, 1) == (0, 255, 255, 0)
+    assert table(ImageChops.logical_and, 0, 1) == [0, 0, 0, 255]
+    assert table(ImageChops.logical_or, 0, 1) == [0, 255, 255, 255]
+    assert table(ImageChops.logical_xor, 0, 1) == [0, 255, 255, 0]
 
-    assert table(ImageChops.logical_and, 0, 128) == (0, 0, 0, 255)
-    assert table(ImageChops.logical_or, 0, 128) == (0, 255, 255, 255)
-    assert table(ImageChops.logical_xor, 0, 128) == (0, 255, 255, 0)
+    assert table(ImageChops.logical_and, 0, 128) == [0, 0, 0, 255]
+    assert table(ImageChops.logical_or, 0, 128) == [0, 255, 255, 255]
+    assert table(ImageChops.logical_xor, 0, 128) == [0, 255, 255, 0]
 
-    assert table(ImageChops.logical_and, 0, 255) == (0, 0, 0, 255)
-    assert table(ImageChops.logical_or, 0, 255) == (0, 255, 255, 255)
-    assert table(ImageChops.logical_xor, 0, 255) == (0, 255, 255, 0)
+    assert table(ImageChops.logical_and, 0, 255) == [0, 0, 0, 255]
+    assert table(ImageChops.logical_or, 0, 255) == [0, 255, 255, 255]
+    assert table(ImageChops.logical_xor, 0, 255) == [0, 255, 255, 0]
diff --git a/Tests/test_imagecms.py b/Tests/test_imagecms.py
index 8efe063c1..f062651f0 100644
--- a/Tests/test_imagecms.py
+++ b/Tests/test_imagecms.py
@@ -1,12 +1,17 @@
+from __future__ import annotations
+
 import datetime
 import os
 import re
 import shutil
+import sys
 from io import BytesIO
+from pathlib import Path
+from typing import Any, Literal, cast
 
 import pytest
 
-from PIL import Image, ImageMode, features
+from PIL import Image, ImageMode, ImageWin, features
 
 from .helper import (
     assert_image,
@@ -14,6 +19,7 @@ from .helper import (
     assert_image_similar,
     assert_image_similar_tofile,
     hopper,
+    is_pypy,
 )
 
 try:
@@ -30,7 +36,7 @@ SRGB = "Tests/icc/sRGB_IEC61966-2-1_black_scaled.icc"
 HAVE_PROFILE = os.path.exists(SRGB)
 
 
-def setup_module():
+def setup_module() -> None:
     try:
         from PIL import ImageCms
 
@@ -40,24 +46,27 @@ def setup_module():
         pytest.skip(str(v))
 
 
-def skip_missing():
+def skip_missing() -> None:
     if not HAVE_PROFILE:
         pytest.skip("SRGB profile not available")
 
 
-def test_sanity():
+def test_sanity() -> None:
     # basic smoke test.
     # this mostly follows the cms_test outline.
-
-    v = ImageCms.versions()  # should return four strings
+    with pytest.warns(DeprecationWarning):
+        v = ImageCms.versions()  # should return four strings
     assert v[0] == "1.0.0 pil"
     assert list(map(type, v)) == [str, str, str, str]
 
     # internal version number
-    assert re.search(r"\d+\.\d+(\.\d+)?$", features.version_module("littlecms2"))
+    version = features.version_module("littlecms2")
+    assert version is not None
+    assert re.search(r"\d+\.\d+(\.\d+)?$", version)
 
     skip_missing()
     i = ImageCms.profileToProfile(hopper(), SRGB, SRGB)
+    assert i is not None
     assert_image(i, "RGB", (128, 128))
 
     i = hopper()
@@ -66,30 +75,44 @@ def test_sanity():
 
     t = ImageCms.buildTransform(SRGB, SRGB, "RGB", "RGB")
     i = ImageCms.applyTransform(hopper(), t)
+    assert i is not None
     assert_image(i, "RGB", (128, 128))
 
     with hopper() as i:
         t = ImageCms.buildTransform(SRGB, SRGB, "RGB", "RGB")
         ImageCms.applyTransform(hopper(), t, inPlace=True)
+        assert i is not None
         assert_image(i, "RGB", (128, 128))
 
     p = ImageCms.createProfile("sRGB")
     o = ImageCms.getOpenProfile(SRGB)
     t = ImageCms.buildTransformFromOpenProfiles(p, o, "RGB", "RGB")
     i = ImageCms.applyTransform(hopper(), t)
+    assert i is not None
     assert_image(i, "RGB", (128, 128))
 
     t = ImageCms.buildProofTransform(SRGB, SRGB, SRGB, "RGB", "RGB")
     assert t.inputMode == "RGB"
     assert t.outputMode == "RGB"
     i = ImageCms.applyTransform(hopper(), t)
+    assert i is not None
     assert_image(i, "RGB", (128, 128))
 
     # test PointTransform convenience API
     hopper().point(t)
 
 
-def test_name():
+def test_flags() -> None:
+    assert ImageCms.Flags.NONE.value == 0
+    assert ImageCms.Flags.GRIDPOINTS(0) == ImageCms.Flags.NONE
+    assert ImageCms.Flags.GRIDPOINTS(256) == ImageCms.Flags.NONE
+
+    assert ImageCms.Flags.GRIDPOINTS(255) == (255 << 16)
+    assert ImageCms.Flags.GRIDPOINTS(-1) == ImageCms.Flags.GRIDPOINTS(255)
+    assert ImageCms.Flags.GRIDPOINTS(511) == ImageCms.Flags.GRIDPOINTS(255)
+
+
+def test_name() -> None:
     skip_missing()
     # get profile information for file
     assert (
@@ -98,7 +121,7 @@ def test_name():
     )
 
 
-def test_info():
+def test_info() -> None:
     skip_missing()
     assert ImageCms.getProfileInfo(SRGB).splitlines() == [
         "sRGB IEC61966-2-1 black scaled",
@@ -108,7 +131,7 @@ def test_info():
     ]
 
 
-def test_copyright():
+def test_copyright() -> None:
     skip_missing()
     assert (
         ImageCms.getProfileCopyright(SRGB).strip()
@@ -116,12 +139,12 @@ def test_copyright():
     )
 
 
-def test_manufacturer():
+def test_manufacturer() -> None:
     skip_missing()
     assert ImageCms.getProfileManufacturer(SRGB).strip() == ""
 
 
-def test_model():
+def test_model() -> None:
     skip_missing()
     assert (
         ImageCms.getProfileModel(SRGB).strip()
@@ -129,14 +152,14 @@ def test_model():
     )
 
 
-def test_description():
+def test_description() -> None:
     skip_missing()
     assert (
         ImageCms.getProfileDescription(SRGB).strip() == "sRGB IEC61966-2-1 black scaled"
     )
 
 
-def test_intent():
+def test_intent() -> None:
     skip_missing()
     assert ImageCms.getDefaultIntent(SRGB) == 0
     support = ImageCms.isIntentSupported(
@@ -145,7 +168,7 @@ def test_intent():
     assert support == 1
 
 
-def test_profile_object():
+def test_profile_object() -> None:
     # same, using profile object
     p = ImageCms.createProfile("sRGB")
     # assert ImageCms.getProfileName(p).strip() == "sRGB built-in - (lcms internal)"
@@ -158,7 +181,7 @@ def test_profile_object():
     assert support == 1
 
 
-def test_extensions():
+def test_extensions() -> None:
     # extensions
 
     with Image.open("Tests/images/rgb.jpg") as i:
@@ -169,7 +192,7 @@ def test_extensions():
     )
 
 
-def test_exceptions():
+def test_exceptions() -> None:
     # Test mode mismatch
     psRGB = ImageCms.createProfile("sRGB")
     pLab = ImageCms.createProfile("LAB")
@@ -186,53 +209,57 @@ def test_exceptions():
         ImageCms.buildTransform("foo", "bar", "RGB", "RGB")
 
     with pytest.raises(ImageCms.PyCMSError, match="Invalid type for Profile"):
-        ImageCms.getProfileName(None)
+        ImageCms.getProfileName(None)  # type: ignore[arg-type]
     skip_missing()
 
     # Python <= 3.9: "an integer is required (got type NoneType)"
     # Python > 3.9: "'NoneType' object cannot be interpreted as an integer"
     with pytest.raises(ImageCms.PyCMSError, match="integer"):
-        ImageCms.isIntentSupported(SRGB, None, None)
+        ImageCms.isIntentSupported(SRGB, None, None)  # type: ignore[arg-type]
 
 
-def test_display_profile():
+def test_display_profile() -> None:
     # try fetching the profile for the current display device
     ImageCms.get_display_profile()
 
+    if sys.platform == "win32":
+        ImageCms.get_display_profile(ImageWin.HDC(0))
+        ImageCms.get_display_profile(ImageWin.HWND(0))
 
-def test_lab_color_profile():
+
+def test_lab_color_profile() -> None:
     ImageCms.createProfile("LAB", 5000)
     ImageCms.createProfile("LAB", 6500)
 
 
-def test_unsupported_color_space():
+def test_unsupported_color_space() -> None:
     with pytest.raises(
         ImageCms.PyCMSError,
         match=re.escape(
             "Color space not supported for on-the-fly profile creation (unsupported)"
         ),
     ):
-        ImageCms.createProfile("unsupported")
+        ImageCms.createProfile("unsupported")  # type: ignore[arg-type]
 
 
-def test_invalid_color_temperature():
+def test_invalid_color_temperature() -> None:
     with pytest.raises(
         ImageCms.PyCMSError,
         match='Color temperature must be numeric, "invalid" not valid',
     ):
-        ImageCms.createProfile("LAB", "invalid")
+        ImageCms.createProfile("LAB", "invalid")  # type: ignore[arg-type]
 
 
 @pytest.mark.parametrize("flag", ("my string", -1))
-def test_invalid_flag(flag):
+def test_invalid_flag(flag: str | int) -> None:
     with hopper() as im:
         with pytest.raises(
             ImageCms.PyCMSError, match="flags must be an integer between 0 and "
         ):
-            ImageCms.profileToProfile(im, "foo", "bar", flags=flag)
+            ImageCms.profileToProfile(im, "foo", "bar", flags=flag)  # type: ignore[arg-type]
 
 
-def test_simple_lab():
+def test_simple_lab() -> None:
     i = Image.new("RGB", (10, 10), (128, 128, 128))
 
     psRGB = ImageCms.createProfile("sRGB")
@@ -240,7 +267,7 @@ def test_simple_lab():
     t = ImageCms.buildTransform(psRGB, pLab, "RGB", "LAB")
 
     i_lab = ImageCms.applyTransform(i, t)
-
+    assert i_lab is not None
     assert i_lab.mode == "LAB"
 
     k = i_lab.getpixel((0, 0))
@@ -256,7 +283,7 @@ def test_simple_lab():
     assert list(b_data) == [128] * 100
 
 
-def test_lab_color():
+def test_lab_color() -> None:
     psRGB = ImageCms.createProfile("sRGB")
     pLab = ImageCms.createProfile("LAB")
     t = ImageCms.buildTransform(psRGB, pLab, "RGB", "LAB")
@@ -264,6 +291,7 @@ def test_lab_color():
     # Need to add a type mapping for some PIL type to TYPE_Lab_8 in findLCMSType, and
     # have that mapping work back to a PIL mode (likely RGB).
     i = ImageCms.applyTransform(hopper(), t)
+    assert i is not None
     assert_image(i, "LAB", (128, 128))
 
     # i.save('temp.lab.tif')  # visually verified vs PS.
@@ -271,13 +299,14 @@ def test_lab_color():
     assert_image_similar_tofile(i, "Tests/images/hopper.Lab.tif", 3.5)
 
 
-def test_lab_srgb():
+def test_lab_srgb() -> None:
     psRGB = ImageCms.createProfile("sRGB")
     pLab = ImageCms.createProfile("LAB")
     t = ImageCms.buildTransform(pLab, psRGB, "LAB", "RGB")
 
     with Image.open("Tests/images/hopper.Lab.tif") as img:
         img_srgb = ImageCms.applyTransform(img, t)
+    assert img_srgb is not None
 
     # img_srgb.save('temp.srgb.tif') # visually verified vs ps.
 
@@ -288,7 +317,7 @@ def test_lab_srgb():
     assert "sRGB" in ImageCms.getProfileDescription(profile)
 
 
-def test_lab_roundtrip():
+def test_lab_roundtrip() -> None:
     # check to see if we're at least internally consistent.
     psRGB = ImageCms.createProfile("sRGB")
     pLab = ImageCms.createProfile("LAB")
@@ -297,15 +326,15 @@ def test_lab_roundtrip():
     t2 = ImageCms.buildTransform(pLab, psRGB, "LAB", "RGB")
 
     i = ImageCms.applyTransform(hopper(), t)
-
+    assert i is not None
     assert i.info["icc_profile"] == ImageCmsProfile(pLab).tobytes()
 
     out = ImageCms.applyTransform(i, t2)
-
+    assert out is not None
     assert_image_similar(hopper(), out, 2)
 
 
-def test_profile_tobytes():
+def test_profile_tobytes() -> None:
     with Image.open("Tests/images/rgb.jpg") as i:
         p = ImageCms.getOpenProfile(BytesIO(i.info["icc_profile"]))
 
@@ -317,24 +346,29 @@ def test_profile_tobytes():
     assert ImageCms.getProfileDescription(p) == ImageCms.getProfileDescription(p2)
 
 
-def test_extended_information():
+def test_extended_information() -> None:
     skip_missing()
     o = ImageCms.getOpenProfile(SRGB)
     p = o.profile
 
-    def assert_truncated_tuple_equal(tup1, tup2, digits=10):
+    def assert_truncated_tuple_equal(
+        tup1: tuple[Any, ...] | None, tup2: tuple[Any, ...], digits: int = 10
+    ) -> None:
         # Helper function to reduce precision of tuples of floats
         # recursively and then check equality.
         power = 10**digits
 
-        def truncate_tuple(tuple_or_float):
+        def truncate_tuple(tuple_value: tuple[Any, ...]) -> tuple[Any, ...]:
             return tuple(
-                truncate_tuple(val)
-                if isinstance(val, tuple)
-                else int(val * power) / power
-                for val in tuple_or_float
+                (
+                    truncate_tuple(val)
+                    if isinstance(val, tuple)
+                    else int(val * power) / power
+                )
+                for val in tuple_value
             )
 
+        assert tup1 is not None
         assert truncate_tuple(tup1) == truncate_tuple(tup2)
 
     assert p.attributes == 4294967296
@@ -464,7 +498,7 @@ def test_extended_information():
     assert p.xcolor_space == "RGB "
 
 
-def test_non_ascii_path(tmp_path):
+def test_non_ascii_path(tmp_path: Path) -> None:
     skip_missing()
     tempfile = str(tmp_path / ("temp_" + chr(128) + ".icc"))
     try:
@@ -477,20 +511,40 @@ def test_non_ascii_path(tmp_path):
     assert p.model == "IEC 61966-2-1 Default RGB Colour Space - sRGB"
 
 
-def test_profile_typesafety():
-    """Profile init type safety
-
-    prepatch, these would segfault, postpatch they should emit a typeerror
-    """
-
+def test_profile_typesafety() -> None:
+    # does not segfault
     with pytest.raises(TypeError, match="Invalid type for Profile"):
-        ImageCms.ImageCmsProfile(0).tobytes()
+        ImageCms.ImageCmsProfile(0)  # type: ignore[arg-type]
     with pytest.raises(TypeError, match="Invalid type for Profile"):
-        ImageCms.ImageCmsProfile(1).tobytes()
+        ImageCms.ImageCmsProfile(1)  # type: ignore[arg-type]
+
+    # also check core function
+    with pytest.raises(TypeError):
+        ImageCms.core.profile_tobytes(0)  # type: ignore[arg-type]
+    with pytest.raises(TypeError):
+        ImageCms.core.profile_tobytes(1)  # type: ignore[arg-type]
+
+    if not is_pypy():
+        # core profile should not be directly instantiable
+        with pytest.raises(TypeError):
+            ImageCms.core.CmsProfile()
+        with pytest.raises(TypeError):
+            ImageCms.core.CmsProfile(0)  # type: ignore[call-arg]
 
 
-def assert_aux_channel_preserved(mode, transform_in_place, preserved_channel):
-    def create_test_image():
+@pytest.mark.skipif(is_pypy(), reason="fails on PyPy")
+def test_transform_typesafety() -> None:
+    # core transform should not be directly instantiable
+    with pytest.raises(TypeError):
+        ImageCms.core.CmsTransform()
+    with pytest.raises(TypeError):
+        ImageCms.core.CmsTransform(0)  # type: ignore[call-arg]
+
+
+def assert_aux_channel_preserved(
+    mode: str, transform_in_place: bool, preserved_channel: str
+) -> None:
+    def create_test_image() -> Image.Image:
         # set up test image with something interesting in the tested aux channel.
         # fmt: off
         nine_grid_deltas = [
@@ -515,9 +569,9 @@ def assert_aux_channel_preserved(mode, transform_in_place, preserved_channel):
             for delta in nine_grid_deltas:
                 channel_data.paste(
                     channel_pattern,
-                    tuple(
-                        paste_offset[c] + delta[c] * channel_pattern.size[c]
-                        for c in range(2)
+                    (
+                        paste_offset[0] + delta[0] * channel_pattern.size[0],
+                        paste_offset[1] + delta[1] * channel_pattern.size[1],
                     ),
                 )
             chans.append(channel_data)
@@ -534,41 +588,43 @@ def assert_aux_channel_preserved(mode, transform_in_place, preserved_channel):
     )
 
     # apply transform
+    result_image: Image.Image | None
     if transform_in_place:
         ImageCms.applyTransform(source_image, t, inPlace=True)
         result_image = source_image
     else:
         result_image = ImageCms.applyTransform(source_image, t, inPlace=False)
+    assert result_image is not None
     result_image_aux = result_image.getchannel(preserved_channel)
 
     assert_image_equal(source_image_aux, result_image_aux)
 
 
-def test_preserve_auxiliary_channels_rgba():
+def test_preserve_auxiliary_channels_rgba() -> None:
     assert_aux_channel_preserved(
         mode="RGBA", transform_in_place=False, preserved_channel="A"
     )
 
 
-def test_preserve_auxiliary_channels_rgba_in_place():
+def test_preserve_auxiliary_channels_rgba_in_place() -> None:
     assert_aux_channel_preserved(
         mode="RGBA", transform_in_place=True, preserved_channel="A"
     )
 
 
-def test_preserve_auxiliary_channels_rgbx():
+def test_preserve_auxiliary_channels_rgbx() -> None:
     assert_aux_channel_preserved(
         mode="RGBX", transform_in_place=False, preserved_channel="X"
     )
 
 
-def test_preserve_auxiliary_channels_rgbx_in_place():
+def test_preserve_auxiliary_channels_rgbx_in_place() -> None:
     assert_aux_channel_preserved(
         mode="RGBX", transform_in_place=True, preserved_channel="X"
     )
 
 
-def test_auxiliary_channels_isolated():
+def test_auxiliary_channels_isolated() -> None:
     # test data in aux channels does not affect non-aux channels
     aux_channel_formats = [
         # format, profile, color-only format, source test image
@@ -584,8 +640,10 @@ def test_auxiliary_channels_isolated():
                     continue
 
                 # convert with and without AUX data, test colors are equal
-                source_profile = ImageCms.createProfile(src_format[1])
-                destination_profile = ImageCms.createProfile(dst_format[1])
+                src_colorSpace = cast(Literal["LAB", "XYZ", "sRGB"], src_format[1])
+                source_profile = ImageCms.createProfile(src_colorSpace)
+                dst_colorSpace = cast(Literal["LAB", "XYZ", "sRGB"], dst_format[1])
+                destination_profile = ImageCms.createProfile(dst_colorSpace)
                 source_image = src_format[3]
                 test_transform = ImageCms.buildTransform(
                     source_profile,
@@ -595,6 +653,7 @@ def test_auxiliary_channels_isolated():
                 )
 
                 # test conversion from aux-ful source
+                test_image: Image.Image | None
                 if transform_in_place:
                     test_image = source_image.copy()
                     ImageCms.applyTransform(test_image, test_transform, inPlace=True)
@@ -602,6 +661,7 @@ def test_auxiliary_channels_isolated():
                     test_image = ImageCms.applyTransform(
                         source_image, test_transform, inPlace=False
                     )
+                assert test_image is not None
 
                 # reference conversion from aux-less source
                 reference_transform = ImageCms.buildTransform(
@@ -613,16 +673,45 @@ def test_auxiliary_channels_isolated():
                 reference_image = ImageCms.applyTransform(
                     source_image.convert(src_format[2]), reference_transform
                 )
-
+                assert reference_image is not None
                 assert_image_equal(test_image.convert(dst_format[2]), reference_image)
 
 
+def test_long_modes() -> None:
+    p = ImageCms.getOpenProfile("Tests/icc/sGrey-v2-nano.icc")
+    with pytest.warns(DeprecationWarning):
+        ImageCms.buildTransform(p, p, "ABCDEFGHI", "ABCDEFGHI")
+
+
 @pytest.mark.parametrize("mode", ("RGB", "RGBA", "RGBX"))
-def test_rgb_lab(mode):
+def test_rgb_lab(mode: str) -> None:
     im = Image.new(mode, (1, 1))
     converted_im = im.convert("LAB")
     assert converted_im.getpixel((0, 0)) == (0, 128, 128)
 
     im = Image.new("LAB", (1, 1), (255, 0, 0))
     converted_im = im.convert(mode)
-    assert converted_im.getpixel((0, 0))[:3] == (0, 255, 255)
+    value = converted_im.getpixel((0, 0))
+    assert isinstance(value, tuple)
+    assert value[:3] == (0, 255, 255)
+
+
+def test_cmyk_lab() -> None:
+    im = Image.new("CMYK", (1, 1))
+    converted_im = im.convert("LAB")
+    assert converted_im.getpixel((0, 0)) == (255, 128, 128)
+
+
+def test_deprecation() -> None:
+    with pytest.warns(DeprecationWarning):
+        assert ImageCms.DESCRIPTION.strip().startswith("pyCMS")
+    with pytest.warns(DeprecationWarning):
+        assert ImageCms.VERSION == "1.0.0 pil"
+    with pytest.warns(DeprecationWarning):
+        assert isinstance(ImageCms.FLAGS, dict)
+
+    profile = ImageCmsProfile(ImageCms.createProfile("sRGB"))
+    with pytest.warns(DeprecationWarning):
+        ImageCms.ImageCmsTransform(profile, profile, "RGBA;16B", "RGB")
+    with pytest.warns(DeprecationWarning):
+        ImageCms.ImageCmsTransform(profile, profile, "RGB", "RGBA;16B")
diff --git a/Tests/test_imagecolor.py b/Tests/test_imagecolor.py
index dcc44e6e3..6eea7886d 100644
--- a/Tests/test_imagecolor.py
+++ b/Tests/test_imagecolor.py
@@ -1,9 +1,11 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, ImageColor
 
 
-def test_hash():
+def test_hash() -> None:
     # short 3 components
     assert (255, 0, 0) == ImageColor.getrgb("#f00")
     assert (0, 255, 0) == ImageColor.getrgb("#0f0")
@@ -55,7 +57,7 @@ def test_hash():
         ImageColor.getrgb("#f00000 ")
 
 
-def test_colormap():
+def test_colormap() -> None:
     assert (0, 0, 0) == ImageColor.getrgb("black")
     assert (255, 255, 255) == ImageColor.getrgb("white")
     assert (255, 255, 255) == ImageColor.getrgb("WHITE")
@@ -64,7 +66,7 @@ def test_colormap():
         ImageColor.getrgb("black ")
 
 
-def test_functions():
+def test_functions() -> None:
     # rgb numbers
     assert (255, 0, 0) == ImageColor.getrgb("rgb(255,0,0)")
     assert (0, 255, 0) == ImageColor.getrgb("rgb(0,255,0)")
@@ -158,7 +160,7 @@ def test_functions():
 
 
 # look for rounding errors (based on code by Tim Hatch)
-def test_rounding_errors():
+def test_rounding_errors() -> None:
     for color in ImageColor.colormap:
         expected = Image.new("RGB", (1, 1), color).convert("L").getpixel((0, 0))
         actual = ImageColor.getcolor(color, "L")
@@ -193,7 +195,11 @@ def test_rounding_errors():
     Image.new("LA", (1, 1), "white")
 
 
-def test_color_too_long():
+def test_color_hsv() -> None:
+    assert (170, 255, 255) == ImageColor.getcolor("hsv(240, 100%, 100%)", "HSV")
+
+
+def test_color_too_long() -> None:
     # Arrange
     color_too_long = "hsl(" + "1" * 40 + "," + "1" * 40 + "%," + "1" * 40 + "%)"
 
diff --git a/Tests/test_imagedraw.py b/Tests/test_imagedraw.py
index 7497fdc66..ed50dfbed 100644
--- a/Tests/test_imagedraw.py
+++ b/Tests/test_imagedraw.py
@@ -1,8 +1,13 @@
+from __future__ import annotations
+
 import os.path
+from collections.abc import Sequence
+from typing import Callable
 
 import pytest
 
-from PIL import Image, ImageColor, ImageDraw, ImageFont
+from PIL import Image, ImageColor, ImageDraw, ImageFont, features
+from PIL._typing import Coords
 
 from .helper import (
     assert_image_equal,
@@ -44,7 +49,7 @@ KITE_POINTS = (
 )
 
 
-def test_sanity():
+def test_sanity() -> None:
     im = hopper("RGB").copy()
 
     draw = ImageDraw.ImageDraw(im)
@@ -56,13 +61,13 @@ def test_sanity():
     draw.rectangle(list(range(4)))
 
 
-def test_valueerror():
+def test_valueerror() -> None:
     with Image.open("Tests/images/chi.gif") as im:
         draw = ImageDraw.Draw(im)
         draw.line((0, 0), fill=(0, 0, 0))
 
 
-def test_mode_mismatch():
+def test_mode_mismatch() -> None:
     im = hopper("RGB").copy()
 
     with pytest.raises(ValueError):
@@ -71,7 +76,7 @@ def test_mode_mismatch():
 
 @pytest.mark.parametrize("bbox", BBOX)
 @pytest.mark.parametrize("start, end", ((0, 180), (0.5, 180.4)))
-def test_arc(bbox, start, end):
+def test_arc(bbox: Coords, start: float, end: float) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -84,7 +89,7 @@ def test_arc(bbox, start, end):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_arc_end_le_start(bbox):
+def test_arc_end_le_start(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -99,7 +104,7 @@ def test_arc_end_le_start(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_arc_no_loops(bbox):
+def test_arc_no_loops(bbox: Coords) -> None:
     # No need to go in loops
     # Arrange
     im = Image.new("RGB", (W, H))
@@ -115,7 +120,7 @@ def test_arc_no_loops(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_arc_width(bbox):
+def test_arc_width(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -128,7 +133,7 @@ def test_arc_width(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_arc_width_pieslice_large(bbox):
+def test_arc_width_pieslice_large(bbox: Coords) -> None:
     # Tests an arc with a large enough width that it is a pieslice
     # Arrange
     im = Image.new("RGB", (W, H))
@@ -142,7 +147,7 @@ def test_arc_width_pieslice_large(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_arc_width_fill(bbox):
+def test_arc_width_fill(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -155,7 +160,7 @@ def test_arc_width_fill(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_arc_width_non_whole_angle(bbox):
+def test_arc_width_non_whole_angle(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -168,7 +173,7 @@ def test_arc_width_non_whole_angle(bbox):
     assert_image_similar_tofile(im, expected, 1)
 
 
-def test_arc_high():
+def test_arc_high() -> None:
     # Arrange
     im = Image.new("RGB", (200, 200))
     draw = ImageDraw.Draw(im)
@@ -181,7 +186,7 @@ def test_arc_high():
     assert_image_equal_tofile(im, "Tests/images/imagedraw_arc_high.png")
 
 
-def test_bitmap():
+def test_bitmap() -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -197,7 +202,7 @@ def test_bitmap():
 
 @pytest.mark.parametrize("mode", ("RGB", "L"))
 @pytest.mark.parametrize("bbox", BBOX)
-def test_chord(mode, bbox):
+def test_chord(mode: str, bbox: Coords) -> None:
     # Arrange
     im = Image.new(mode, (W, H))
     draw = ImageDraw.Draw(im)
@@ -211,7 +216,7 @@ def test_chord(mode, bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_chord_width(bbox):
+def test_chord_width(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -224,7 +229,7 @@ def test_chord_width(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_chord_width_fill(bbox):
+def test_chord_width_fill(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -237,7 +242,7 @@ def test_chord_width_fill(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_chord_zero_width(bbox):
+def test_chord_zero_width(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -249,7 +254,7 @@ def test_chord_zero_width(bbox):
     assert_image_equal_tofile(im, "Tests/images/imagedraw_chord_zero_width.png")
 
 
-def test_chord_too_fat():
+def test_chord_too_fat() -> None:
     # Arrange
     im = Image.new("RGB", (100, 100))
     draw = ImageDraw.Draw(im)
@@ -261,9 +266,24 @@ def test_chord_too_fat():
     assert_image_equal_tofile(im, "Tests/images/imagedraw_chord_too_fat.png")
 
 
+@pytest.mark.parametrize("mode", ("RGB", "L"))
+@pytest.mark.parametrize("xy", ((W / 2, H / 2), [W / 2, H / 2]))
+def test_circle(mode: str, xy: Sequence[float]) -> None:
+    # Arrange
+    im = Image.new(mode, (W, H))
+    draw = ImageDraw.Draw(im)
+    expected = f"Tests/images/imagedraw_ellipse_{mode}.png"
+
+    # Act
+    draw.circle(xy, 25, fill="green", outline="blue")
+
+    # Assert
+    assert_image_similar_tofile(im, expected, 1)
+
+
 @pytest.mark.parametrize("mode", ("RGB", "L"))
 @pytest.mark.parametrize("bbox", BBOX)
-def test_ellipse(mode, bbox):
+def test_ellipse(mode: str, bbox: Coords) -> None:
     # Arrange
     im = Image.new(mode, (W, H))
     draw = ImageDraw.Draw(im)
@@ -277,7 +297,7 @@ def test_ellipse(mode, bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_ellipse_translucent(bbox):
+def test_ellipse_translucent(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im, "RGBA")
@@ -290,7 +310,7 @@ def test_ellipse_translucent(bbox):
     assert_image_similar_tofile(im, expected, 1)
 
 
-def test_ellipse_edge():
+def test_ellipse_edge() -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -302,7 +322,7 @@ def test_ellipse_edge():
     assert_image_similar_tofile(im, "Tests/images/imagedraw_ellipse_edge.png", 1)
 
 
-def test_ellipse_symmetric():
+def test_ellipse_symmetric() -> None:
     for width, bbox in (
         (100, (24, 24, 75, 75)),
         (101, (25, 25, 75, 75)),
@@ -314,7 +334,7 @@ def test_ellipse_symmetric():
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_ellipse_width(bbox):
+def test_ellipse_width(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -326,7 +346,7 @@ def test_ellipse_width(bbox):
     assert_image_similar_tofile(im, "Tests/images/imagedraw_ellipse_width.png", 1)
 
 
-def test_ellipse_width_large():
+def test_ellipse_width_large() -> None:
     # Arrange
     im = Image.new("RGB", (500, 500))
     draw = ImageDraw.Draw(im)
@@ -339,7 +359,7 @@ def test_ellipse_width_large():
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_ellipse_width_fill(bbox):
+def test_ellipse_width_fill(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -352,7 +372,7 @@ def test_ellipse_width_fill(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_ellipse_zero_width(bbox):
+def test_ellipse_zero_width(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -364,7 +384,7 @@ def test_ellipse_zero_width(bbox):
     assert_image_equal_tofile(im, "Tests/images/imagedraw_ellipse_zero_width.png")
 
 
-def ellipse_various_sizes_helper(filled):
+def ellipse_various_sizes_helper(filled: bool) -> Image.Image:
     ellipse_sizes = range(32)
     image_size = sum(ellipse_sizes) + len(ellipse_sizes) + 1
     im = Image.new("RGB", (image_size, image_size))
@@ -391,13 +411,13 @@ def ellipse_various_sizes_helper(filled):
     return im
 
 
-def test_ellipse_various_sizes():
+def test_ellipse_various_sizes() -> None:
     im = ellipse_various_sizes_helper(False)
 
     assert_image_equal_tofile(im, "Tests/images/imagedraw_ellipse_various_sizes.png")
 
 
-def test_ellipse_various_sizes_filled():
+def test_ellipse_various_sizes_filled() -> None:
     im = ellipse_various_sizes_helper(True)
 
     assert_image_equal_tofile(
@@ -406,7 +426,7 @@ def test_ellipse_various_sizes_filled():
 
 
 @pytest.mark.parametrize("points", POINTS)
-def test_line(points):
+def test_line(points: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -418,7 +438,7 @@ def test_line(points):
     assert_image_equal_tofile(im, "Tests/images/imagedraw_line.png")
 
 
-def test_shape1():
+def test_shape1() -> None:
     # Arrange
     im = Image.new("RGB", (100, 100), "white")
     draw = ImageDraw.Draw(im)
@@ -428,6 +448,7 @@ def test_shape1():
     x3, y3 = 95, 5
 
     # Act
+    assert ImageDraw.Outline is not None
     s = ImageDraw.Outline()
     s.move(x0, y0)
     s.curve(x1, y1, x2, y2, x3, y3)
@@ -439,7 +460,7 @@ def test_shape1():
     assert_image_equal_tofile(im, "Tests/images/imagedraw_shape1.png")
 
 
-def test_shape2():
+def test_shape2() -> None:
     # Arrange
     im = Image.new("RGB", (100, 100), "white")
     draw = ImageDraw.Draw(im)
@@ -449,6 +470,7 @@ def test_shape2():
     x3, y3 = 5, 95
 
     # Act
+    assert ImageDraw.Outline is not None
     s = ImageDraw.Outline()
     s.move(x0, y0)
     s.curve(x1, y1, x2, y2, x3, y3)
@@ -460,13 +482,14 @@ def test_shape2():
     assert_image_equal_tofile(im, "Tests/images/imagedraw_shape2.png")
 
 
-def test_transform():
+def test_transform() -> None:
     # Arrange
     im = Image.new("RGB", (100, 100), "white")
     expected = im.copy()
     draw = ImageDraw.Draw(im)
 
     # Act
+    assert ImageDraw.Outline is not None
     s = ImageDraw.Outline()
     s.line(0, 0)
     s.transform((0, 0, 0, 0, 0, 0))
@@ -479,7 +502,7 @@ def test_transform():
 
 @pytest.mark.parametrize("bbox", BBOX)
 @pytest.mark.parametrize("start, end", ((-92, 46), (-92.2, 46.2)))
-def test_pieslice(bbox, start, end):
+def test_pieslice(bbox: Coords, start: float, end: float) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -492,7 +515,7 @@ def test_pieslice(bbox, start, end):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_pieslice_width(bbox):
+def test_pieslice_width(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -505,7 +528,7 @@ def test_pieslice_width(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_pieslice_width_fill(bbox):
+def test_pieslice_width_fill(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -519,7 +542,7 @@ def test_pieslice_width_fill(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_pieslice_zero_width(bbox):
+def test_pieslice_zero_width(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -531,7 +554,7 @@ def test_pieslice_zero_width(bbox):
     assert_image_equal_tofile(im, "Tests/images/imagedraw_pieslice_zero_width.png")
 
 
-def test_pieslice_wide():
+def test_pieslice_wide() -> None:
     # Arrange
     im = Image.new("RGB", (200, 100))
     draw = ImageDraw.Draw(im)
@@ -543,7 +566,7 @@ def test_pieslice_wide():
     assert_image_equal_tofile(im, "Tests/images/imagedraw_pieslice_wide.png")
 
 
-def test_pieslice_no_spikes():
+def test_pieslice_no_spikes() -> None:
     im = Image.new("RGB", (161, 161), "white")
     draw = ImageDraw.Draw(im)
     cxs = (
@@ -574,7 +597,7 @@ def test_pieslice_no_spikes():
 
 
 @pytest.mark.parametrize("points", POINTS)
-def test_point(points):
+def test_point(points: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -586,8 +609,20 @@ def test_point(points):
     assert_image_equal_tofile(im, "Tests/images/imagedraw_point.png")
 
 
+def test_point_I16() -> None:
+    # Arrange
+    im = Image.new("I;16", (1, 1))
+    draw = ImageDraw.Draw(im)
+
+    # Act
+    draw.point((0, 0), fill=0x1234)
+
+    # Assert
+    assert im.getpixel((0, 0)) == 0x1234
+
+
 @pytest.mark.parametrize("points", POINTS)
-def test_polygon(points):
+def test_polygon(points: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -599,9 +634,24 @@ def test_polygon(points):
     assert_image_equal_tofile(im, "Tests/images/imagedraw_polygon.png")
 
 
+@pytest.mark.parametrize("points", POINTS)
+def test_polygon_width_I16(points: Coords) -> None:
+    # Arrange
+    im = Image.new("I;16", (W, H))
+    draw = ImageDraw.Draw(im)
+
+    # Act
+    draw.polygon(points, outline=0xFFFF, width=2)
+
+    # Assert
+    assert_image_equal_tofile(im, "Tests/images/imagedraw_polygon_width_I.tiff")
+
+
 @pytest.mark.parametrize("mode", ("RGB", "L"))
 @pytest.mark.parametrize("kite_points", KITE_POINTS)
-def test_polygon_kite(mode, kite_points):
+def test_polygon_kite(
+    mode: str, kite_points: tuple[tuple[int, int], ...] | list[tuple[int, int]]
+) -> None:
     # Test drawing lines of different gradients (dx>dy, dy>dx) and
     # vertical (dx==0) and horizontal (dy==0) lines
     # Arrange
@@ -616,7 +666,7 @@ def test_polygon_kite(mode, kite_points):
     assert_image_equal_tofile(im, expected)
 
 
-def test_polygon_1px_high():
+def test_polygon_1px_high() -> None:
     # Test drawing a 1px high polygon
     # Arrange
     im = Image.new("RGB", (3, 3))
@@ -630,7 +680,7 @@ def test_polygon_1px_high():
     assert_image_equal_tofile(im, expected)
 
 
-def test_polygon_1px_high_translucent():
+def test_polygon_1px_high_translucent() -> None:
     # Test drawing a translucent 1px high polygon
     # Arrange
     im = Image.new("RGB", (4, 3))
@@ -644,7 +694,7 @@ def test_polygon_1px_high_translucent():
     assert_image_equal_tofile(im, expected)
 
 
-def test_polygon_translucent():
+def test_polygon_translucent() -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im, "RGBA")
@@ -658,7 +708,7 @@ def test_polygon_translucent():
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_rectangle(bbox):
+def test_rectangle(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -670,7 +720,7 @@ def test_rectangle(bbox):
     assert_image_equal_tofile(im, "Tests/images/imagedraw_rectangle.png")
 
 
-def test_big_rectangle():
+def test_big_rectangle() -> None:
     # Test drawing a rectangle bigger than the image
     # Arrange
     im = Image.new("RGB", (W, H))
@@ -685,7 +735,7 @@ def test_big_rectangle():
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_rectangle_width(bbox):
+def test_rectangle_width(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -699,7 +749,7 @@ def test_rectangle_width(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_rectangle_width_fill(bbox):
+def test_rectangle_width_fill(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -713,7 +763,7 @@ def test_rectangle_width_fill(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_rectangle_zero_width(bbox):
+def test_rectangle_zero_width(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -726,20 +776,20 @@ def test_rectangle_zero_width(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_rectangle_I16(bbox):
+def test_rectangle_I16(bbox: Coords) -> None:
     # Arrange
     im = Image.new("I;16", (W, H))
     draw = ImageDraw.Draw(im)
 
     # Act
-    draw.rectangle(bbox, fill="black", outline="green")
+    draw.rectangle(bbox, outline=0xFFFF)
 
     # Assert
-    assert_image_equal_tofile(im.convert("I"), "Tests/images/imagedraw_rectangle_I.png")
+    assert_image_equal_tofile(im, "Tests/images/imagedraw_rectangle_I.tiff")
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_rectangle_translucent_outline(bbox):
+def test_rectangle_translucent_outline(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im, "RGBA")
@@ -757,7 +807,13 @@ def test_rectangle_translucent_outline(bbox):
     "xy",
     [(10, 20, 190, 180), ([10, 20], [190, 180]), ((10, 20), (190, 180))],
 )
-def test_rounded_rectangle(xy):
+def test_rounded_rectangle(
+    xy: (
+        tuple[int, int, int, int]
+        | tuple[list[int]]
+        | tuple[tuple[int, int], tuple[int, int]]
+    )
+) -> None:
     # Arrange
     im = Image.new("RGB", (200, 200))
     draw = ImageDraw.Draw(im)
@@ -773,7 +829,9 @@ def test_rounded_rectangle(xy):
 @pytest.mark.parametrize("top_right", (True, False))
 @pytest.mark.parametrize("bottom_right", (True, False))
 @pytest.mark.parametrize("bottom_left", (True, False))
-def test_rounded_rectangle_corners(top_left, top_right, bottom_right, bottom_left):
+def test_rounded_rectangle_corners(
+    top_left: bool, top_right: bool, bottom_right: bool, bottom_left: bool
+) -> None:
     corners = (top_left, top_right, bottom_right, bottom_left)
 
     # Arrange
@@ -799,6 +857,27 @@ def test_rounded_rectangle_corners(top_left, top_right, bottom_right, bottom_lef
     )
 
 
+def test_rounded_rectangle_joined_x_different_corners() -> None:
+    # Arrange
+    im = Image.new("RGB", (W, H))
+    draw = ImageDraw.Draw(im, "RGBA")
+
+    # Act
+    draw.rounded_rectangle(
+        (20, 10, 80, 90),
+        30,
+        fill="red",
+        outline="green",
+        width=5,
+        corners=(True, False, False, False),
+    )
+
+    # Assert
+    assert_image_equal_tofile(
+        im, "Tests/images/imagedraw_rounded_rectangle_joined_x_different_corners.png"
+    )
+
+
 @pytest.mark.parametrize(
     "xy, radius, type",
     [
@@ -807,7 +886,9 @@ def test_rounded_rectangle_corners(top_left, top_right, bottom_right, bottom_lef
         ((10, 20, 190, 181), 85, "height"),
     ],
 )
-def test_rounded_rectangle_non_integer_radius(xy, radius, type):
+def test_rounded_rectangle_non_integer_radius(
+    xy: tuple[int, int, int, int], radius: float, type: str
+) -> None:
     # Arrange
     im = Image.new("RGB", (200, 200))
     draw = ImageDraw.Draw(im)
@@ -823,7 +904,7 @@ def test_rounded_rectangle_non_integer_radius(xy, radius, type):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_rounded_rectangle_zero_radius(bbox):
+def test_rounded_rectangle_zero_radius(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -840,12 +921,16 @@ def test_rounded_rectangle_zero_radius(bbox):
     [
         ((20, 10, 80, 90), "x"),
         ((20, 10, 81, 90), "x_odd"),
+        ((20, 10, 81.1, 90), "x_odd"),
         ((10, 20, 90, 80), "y"),
         ((10, 20, 90, 81), "y_odd"),
+        ((10, 20, 90, 81.1), "y_odd"),
         ((20, 20, 80, 80), "both"),
     ],
 )
-def test_rounded_rectangle_translucent(xy, suffix):
+def test_rounded_rectangle_translucent(
+    xy: tuple[int, int, int, int], suffix: str
+) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im, "RGBA")
@@ -862,10 +947,15 @@ def test_rounded_rectangle_translucent(xy, suffix):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_floodfill(bbox):
+def test_floodfill(bbox: Coords) -> None:
     red = ImageColor.getrgb("red")
 
-    for mode, value in [("L", 1), ("RGBA", (255, 0, 0, 0)), ("RGB", red)]:
+    mode_values: list[tuple[str, int | tuple[int, ...]]] = [
+        ("L", 1),
+        ("RGBA", (255, 0, 0, 0)),
+        ("RGB", red),
+    ]
+    for mode, value in mode_values:
         # Arrange
         im = Image.new(mode, (W, H))
         draw = ImageDraw.Draw(im)
@@ -895,7 +985,7 @@ def test_floodfill(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_floodfill_border(bbox):
+def test_floodfill_border(bbox: Coords) -> None:
     # floodfill() is experimental
 
     # Arrange
@@ -917,7 +1007,7 @@ def test_floodfill_border(bbox):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_floodfill_thresh(bbox):
+def test_floodfill_thresh(bbox: Coords) -> None:
     # floodfill() is experimental
 
     # Arrange
@@ -933,7 +1023,7 @@ def test_floodfill_thresh(bbox):
     assert_image_equal_tofile(im, "Tests/images/imagedraw_floodfill2.png")
 
 
-def test_floodfill_not_negative():
+def test_floodfill_not_negative() -> None:
     # floodfill() is experimental
     # Test that floodfill does not extend into negative coordinates
 
@@ -951,8 +1041,11 @@ def test_floodfill_not_negative():
 
 
 def create_base_image_draw(
-    size, mode=DEFAULT_MODE, background1=WHITE, background2=GRAY
-):
+    size: tuple[int, int],
+    mode: str = DEFAULT_MODE,
+    background1: tuple[int, int, int] = WHITE,
+    background2: tuple[int, int, int] = GRAY,
+) -> tuple[Image.Image, ImageDraw.ImageDraw]:
     img = Image.new(mode, size, background1)
     for x in range(0, size[0]):
         for y in range(0, size[1]):
@@ -961,7 +1054,7 @@ def create_base_image_draw(
     return img, ImageDraw.Draw(img)
 
 
-def test_square():
+def test_square() -> None:
     expected = os.path.join(IMAGES_PATH, "square.png")
     img, draw = create_base_image_draw((10, 10))
     draw.polygon([(2, 2), (2, 7), (7, 7), (7, 2)], BLACK)
@@ -974,7 +1067,7 @@ def test_square():
     assert_image_equal_tofile(img, expected, "square as normal rectangle failed")
 
 
-def test_triangle_right():
+def test_triangle_right() -> None:
     img, draw = create_base_image_draw((20, 20))
     draw.polygon([(3, 5), (17, 5), (10, 12)], BLACK)
     assert_image_equal_tofile(
@@ -986,7 +1079,7 @@ def test_triangle_right():
     "fill, suffix",
     ((BLACK, "width"), (None, "width_no_fill")),
 )
-def test_triangle_right_width(fill, suffix):
+def test_triangle_right_width(fill: tuple[int, int, int] | None, suffix: str) -> None:
     img, draw = create_base_image_draw((100, 100))
     draw.polygon([(15, 25), (85, 25), (50, 60)], fill, WHITE, width=5)
     assert_image_equal_tofile(
@@ -994,7 +1087,7 @@ def test_triangle_right_width(fill, suffix):
     )
 
 
-def test_line_horizontal():
+def test_line_horizontal() -> None:
     img, draw = create_base_image_draw((20, 20))
     draw.line((5, 5, 14, 5), BLACK, 2)
     assert_image_equal_tofile(
@@ -1032,8 +1125,8 @@ def test_line_horizontal():
     )
 
 
-def test_line_h_s1_w2():
-    pytest.skip("failing")
+@pytest.mark.xfail(reason="failing test")
+def test_line_h_s1_w2() -> None:
     img, draw = create_base_image_draw((20, 20))
     draw.line((5, 5, 14, 6), BLACK, 2)
     assert_image_equal_tofile(
@@ -1043,7 +1136,7 @@ def test_line_h_s1_w2():
     )
 
 
-def test_line_vertical():
+def test_line_vertical() -> None:
     img, draw = create_base_image_draw((20, 20))
     draw.line((5, 5, 5, 14), BLACK, 2)
     assert_image_equal_tofile(
@@ -1089,7 +1182,7 @@ def test_line_vertical():
     )
 
 
-def test_line_oblique_45():
+def test_line_oblique_45() -> None:
     expected = os.path.join(IMAGES_PATH, "line_oblique_45_w3px_a.png")
     img, draw = create_base_image_draw((20, 20))
     draw.line((5, 5, 14, 14), BLACK, 3)
@@ -1111,7 +1204,7 @@ def test_line_oblique_45():
     )
 
 
-def test_wide_line_dot():
+def test_wide_line_dot() -> None:
     # Test drawing a wide "line" from one point to another just draws a single point
     # Arrange
     im = Image.new("RGB", (W, H))
@@ -1124,7 +1217,7 @@ def test_wide_line_dot():
     assert_image_similar_tofile(im, "Tests/images/imagedraw_wide_line_dot.png", 1)
 
 
-def test_wide_line_larger_than_int():
+def test_wide_line_larger_than_int() -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -1218,7 +1311,7 @@ def test_wide_line_larger_than_int():
         ],
     ],
 )
-def test_line_joint(xy):
+def test_line_joint(xy: list[tuple[int, int]] | tuple[int, ...] | list[int]) -> None:
     im = Image.new("RGB", (500, 325))
     draw = ImageDraw.Draw(im)
 
@@ -1229,7 +1322,7 @@ def test_line_joint(xy):
     assert_image_similar_tofile(im, "Tests/images/imagedraw_line_joint_curve.png", 3)
 
 
-def test_textsize_empty_string():
+def test_textsize_empty_string() -> None:
     # https://github.com/python-pillow/Pillow/issues/2783
     # Arrange
     im = Image.new("RGB", (W, H))
@@ -1245,7 +1338,7 @@ def test_textsize_empty_string():
 
 
 @skip_unless_feature("freetype2")
-def test_textbbox_stroke():
+def test_textbbox_stroke() -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
@@ -1259,7 +1352,7 @@ def test_textbbox_stroke():
 
 
 @skip_unless_feature("freetype2")
-def test_stroke():
+def test_stroke() -> None:
     for suffix, stroke_fill in {"same": None, "different": "#0f0"}.items():
         # Arrange
         im = Image.new("RGB", (120, 130))
@@ -1276,7 +1369,21 @@ def test_stroke():
 
 
 @skip_unless_feature("freetype2")
-def test_stroke_descender():
+def test_stroke_float() -> None:
+    # Arrange
+    im = Image.new("RGB", (120, 130))
+    draw = ImageDraw.Draw(im)
+    font = ImageFont.truetype("Tests/fonts/FreeMono.ttf", 120)
+
+    # Act
+    draw.text((12, 12), "A", "#f00", font, stroke_width=0.5)
+
+    # Assert
+    assert_image_similar_tofile(im, "Tests/images/imagedraw_stroke_float.png", 3.1)
+
+
+@skip_unless_feature("freetype2")
+def test_stroke_descender() -> None:
     # Arrange
     im = Image.new("RGB", (120, 130))
     draw = ImageDraw.Draw(im)
@@ -1290,7 +1397,7 @@ def test_stroke_descender():
 
 
 @skip_unless_feature("freetype2")
-def test_split_word():
+def test_split_word() -> None:
     # Arrange
     im = Image.new("RGB", (230, 55))
     expected = im.copy()
@@ -1311,7 +1418,7 @@ def test_split_word():
 
 
 @skip_unless_feature("freetype2")
-def test_stroke_multiline():
+def test_stroke_multiline() -> None:
     # Arrange
     im = Image.new("RGB", (100, 250))
     draw = ImageDraw.Draw(im)
@@ -1326,7 +1433,8 @@ def test_stroke_multiline():
     assert_image_similar_tofile(im, "Tests/images/imagedraw_stroke_multiline.png", 3.3)
 
 
-def test_setting_default_font():
+@skip_unless_feature("freetype2")
+def test_setting_default_font() -> None:
     # Arrange
     im = Image.new("RGB", (100, 250))
     draw = ImageDraw.Draw(im)
@@ -1340,17 +1448,63 @@ def test_setting_default_font():
         assert draw.getfont() == font
     finally:
         ImageDraw.ImageDraw.font = None
-        assert isinstance(draw.getfont(), ImageFont.ImageFont)
+        assert isinstance(draw.getfont(), ImageFont.load_default().__class__)
+
+
+def test_default_font_size() -> None:
+    freetype_support = features.check_module("freetype2")
+    text = "Default font at a specific size."
+
+    im = Image.new("RGB", (220, 25))
+    draw = ImageDraw.Draw(im)
+
+    def check(func: Callable[[], None]) -> None:
+        if freetype_support:
+            func()
+        else:
+            with pytest.raises(ImportError):
+                func()
+
+    def draw_text() -> None:
+        draw.text((0, 0), text, font_size=16)
+        assert_image_equal_tofile(im, "Tests/images/imagedraw_default_font_size.png")
+
+    check(draw_text)
+
+    def draw_textlength() -> None:
+        assert draw.textlength(text, font_size=16) == 216
+
+    check(draw_textlength)
+
+    def draw_textbbox() -> None:
+        assert draw.textbbox((0, 0), text, font_size=16) == (0, 3, 216, 19)
+
+    check(draw_textbbox)
+
+    im = Image.new("RGB", (220, 25))
+    draw = ImageDraw.Draw(im)
+
+    def draw_multiline_text() -> None:
+        draw.multiline_text((0, 0), text, font_size=16)
+        assert_image_equal_tofile(im, "Tests/images/imagedraw_default_font_size.png")
+
+    check(draw_multiline_text)
+
+    def draw_multiline_textbbox() -> None:
+        assert draw.multiline_textbbox((0, 0), text, font_size=16) == (0, 3, 216, 19)
+
+    check(draw_multiline_textbbox)
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_same_color_outline(bbox):
+def test_same_color_outline(bbox: Coords) -> None:
     # Prepare shape
     x0, y0 = 5, 5
     x1, y1 = 5, 50
     x2, y2 = 95, 50
     x3, y3 = 95, 5
 
+    assert ImageDraw.Outline is not None
     s = ImageDraw.Outline()
     s.move(x0, y0)
     s.curve(x1, y1, x2, y2, x3, y3)
@@ -1358,7 +1512,8 @@ def test_same_color_outline(bbox):
 
     # Begin
     for mode in ["RGB", "L"]:
-        for fill, outline in [["red", None], ["red", "red"], ["red", "#f00"]]:
+        fill = "red"
+        for outline in [None, "red", "#f00"]:
             for operation, args in {
                 "chord": [bbox, 0, 180],
                 "ellipse": [bbox],
@@ -1373,6 +1528,7 @@ def test_same_color_outline(bbox):
 
                 # Act
                 draw_method = getattr(draw, operation)
+                assert isinstance(args, list)
                 args += [fill, outline]
                 draw_method(*args)
 
@@ -1387,15 +1543,20 @@ def test_same_color_outline(bbox):
         (4, "square", {}),
         (8, "regular_octagon", {}),
         (4, "square_rotate_45", {"rotation": 45}),
-        (3, "triangle_width", {"width": 5, "outline": "yellow"}),
+        (3, "triangle_width", {"outline": "yellow", "width": 5}),
     ],
 )
-def test_draw_regular_polygon(n_sides, polygon_name, args):
+def test_draw_regular_polygon(
+    n_sides: int, polygon_name: str, args: dict[str, int | str]
+) -> None:
     im = Image.new("RGBA", size=(W, H), color=(255, 0, 0, 0))
     filename = f"Tests/images/imagedraw_{polygon_name}.png"
     draw = ImageDraw.Draw(im)
     bounding_circle = ((W // 2, H // 2), 25)
-    draw.regular_polygon(bounding_circle, n_sides, fill="red", **args)
+    rotation = int(args.get("rotation", 0))
+    outline = args.get("outline")
+    width = int(args.get("width", 1))
+    draw.regular_polygon(bounding_circle, n_sides, rotation, "red", outline, width)
     assert_image_equal_tofile(im, filename)
 
 
@@ -1427,7 +1588,9 @@ def test_draw_regular_polygon(n_sides, polygon_name, args):
         ),
     ],
 )
-def test_compute_regular_polygon_vertices(n_sides, expected_vertices):
+def test_compute_regular_polygon_vertices(
+    n_sides: int, expected_vertices: list[tuple[float, float]]
+) -> None:
     bounding_circle = (W // 2, H // 2, 25)
     vertices = ImageDraw._compute_regular_polygon_vertices(bounding_circle, n_sides, 0)
     assert vertices == expected_vertices
@@ -1438,7 +1601,7 @@ def test_compute_regular_polygon_vertices(n_sides, expected_vertices):
     [
         (None, (50, 50, 25), 0, TypeError, "n_sides should be an int"),
         (1, (50, 50, 25), 0, ValueError, "n_sides should be an int > 2"),
-        (3, 50, 0, TypeError, "bounding_circle should be a tuple"),
+        (3, 50, 0, TypeError, "bounding_circle should be a sequence"),
         (
             3,
             (50, 50, 100, 100),
@@ -1478,14 +1641,18 @@ def test_compute_regular_polygon_vertices(n_sides, expected_vertices):
     ],
 )
 def test_compute_regular_polygon_vertices_input_error_handling(
-    n_sides, bounding_circle, rotation, expected_error, error_message
-):
+    n_sides: int,
+    bounding_circle: int | tuple[int | tuple[int] | str, ...],
+    rotation: int | str,
+    expected_error: type[Exception],
+    error_message: str,
+) -> None:
     with pytest.raises(expected_error) as e:
-        ImageDraw._compute_regular_polygon_vertices(bounding_circle, n_sides, rotation)
+        ImageDraw._compute_regular_polygon_vertices(bounding_circle, n_sides, rotation)  # type: ignore[arg-type]
     assert str(e.value) == error_message
 
 
-def test_continuous_horizontal_edges_polygon():
+def test_continuous_horizontal_edges_polygon() -> None:
     xy = [
         (2, 6),
         (6, 6),
@@ -1504,7 +1671,7 @@ def test_continuous_horizontal_edges_polygon():
     )
 
 
-def test_discontiguous_corners_polygon():
+def test_discontiguous_corners_polygon() -> None:
     img, draw = create_base_image_draw((84, 68))
     draw.polygon(((1, 21), (34, 4), (71, 1), (38, 18)), BLACK)
     draw.polygon(((71, 44), (38, 27), (1, 24)), BLACK)
@@ -1516,7 +1683,7 @@ def test_discontiguous_corners_polygon():
     assert_image_similar_tofile(img, expected, 1)
 
 
-def test_polygon2():
+def test_polygon2() -> None:
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
     draw.polygon([(18, 30), (19, 31), (18, 30), (85, 30), (60, 72)], "red")
@@ -1525,7 +1692,7 @@ def test_polygon2():
 
 
 @pytest.mark.parametrize("xy", ((1, 1, 0, 1), (1, 1, 1, 0)))
-def test_incorrectly_ordered_coordinates(xy):
+def test_incorrectly_ordered_coordinates(xy: tuple[int, int, int, int]) -> None:
     im = Image.new("RGB", (W, H))
     draw = ImageDraw.Draw(im)
     with pytest.raises(ValueError):
@@ -1540,3 +1707,8 @@ def test_incorrectly_ordered_coordinates(xy):
         draw.rectangle(xy)
     with pytest.raises(ValueError):
         draw.rounded_rectangle(xy)
+
+
+def test_getdraw() -> None:
+    with pytest.warns(DeprecationWarning):
+        ImageDraw.getdraw(None, [])
diff --git a/Tests/test_imagedraw2.py b/Tests/test_imagedraw2.py
index a2c2fa1f0..e0d368228 100644
--- a/Tests/test_imagedraw2.py
+++ b/Tests/test_imagedraw2.py
@@ -1,8 +1,11 @@
+from __future__ import annotations
+
 import os.path
 
 import pytest
 
 from PIL import Image, ImageDraw, ImageDraw2, features
+from PIL._typing import Coords
 
 from .helper import (
     assert_image_equal,
@@ -41,20 +44,59 @@ POINTS = (
 FONT_PATH = "Tests/fonts/FreeMono.ttf"
 
 
-def test_sanity():
+def test_sanity() -> None:
     im = hopper("RGB").copy()
 
     draw = ImageDraw2.Draw(im)
     pen = ImageDraw2.Pen("blue", width=7)
     draw.line(list(range(10)), pen)
 
-    draw, handler = ImageDraw.getdraw(im)
+    draw2, handler = ImageDraw.getdraw(im)
+    assert draw2 is not None
     pen = ImageDraw2.Pen("blue", width=7)
-    draw.line(list(range(10)), pen)
+    draw2.line(list(range(10)), pen)
+
+
+def test_mode() -> None:
+    draw = ImageDraw2.Draw("L", (1, 1))
+    assert draw.image.mode == "L"
+
+    with pytest.raises(ValueError):
+        ImageDraw2.Draw("L")
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_ellipse(bbox):
+@pytest.mark.parametrize("start, end", ((0, 180), (0.5, 180.4)))
+def test_arc(bbox: Coords, start: float, end: float) -> None:
+    # Arrange
+    im = Image.new("RGB", (W, H))
+    draw = ImageDraw2.Draw(im)
+    pen = ImageDraw2.Pen("white", width=1)
+
+    # Act
+    draw.arc(bbox, pen, start, end)
+
+    # Assert
+    assert_image_similar_tofile(im, "Tests/images/imagedraw_arc.png", 1)
+
+
+@pytest.mark.parametrize("bbox", BBOX)
+def test_chord(bbox: Coords) -> None:
+    # Arrange
+    im = Image.new("RGB", (W, H))
+    draw = ImageDraw2.Draw(im)
+    pen = ImageDraw2.Pen("yellow")
+    brush = ImageDraw2.Brush("red")
+
+    # Act
+    draw.chord(bbox, pen, 0, 180, brush)
+
+    # Assert
+    assert_image_similar_tofile(im, "Tests/images/imagedraw_chord_RGB.png", 1)
+
+
+@pytest.mark.parametrize("bbox", BBOX)
+def test_ellipse(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)
@@ -68,7 +110,7 @@ def test_ellipse(bbox):
     assert_image_similar_tofile(im, "Tests/images/imagedraw_ellipse_RGB.png", 1)
 
 
-def test_ellipse_edge():
+def test_ellipse_edge() -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)
@@ -82,7 +124,7 @@ def test_ellipse_edge():
 
 
 @pytest.mark.parametrize("points", POINTS)
-def test_line(points):
+def test_line(points: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)
@@ -96,7 +138,7 @@ def test_line(points):
 
 
 @pytest.mark.parametrize("points", POINTS)
-def test_line_pen_as_brush(points):
+def test_line_pen_as_brush(points: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)
@@ -111,8 +153,24 @@ def test_line_pen_as_brush(points):
     assert_image_equal_tofile(im, "Tests/images/imagedraw_line.png")
 
 
+@pytest.mark.parametrize("bbox", BBOX)
+@pytest.mark.parametrize("start, end", ((-92, 46), (-92.2, 46.2)))
+def test_pieslice(bbox: Coords, start: float, end: float) -> None:
+    # Arrange
+    im = Image.new("RGB", (W, H))
+    draw = ImageDraw2.Draw(im)
+    pen = ImageDraw2.Pen("blue")
+    brush = ImageDraw2.Brush("white")
+
+    # Act
+    draw.pieslice(bbox, pen, start, end, brush)
+
+    # Assert
+    assert_image_similar_tofile(im, "Tests/images/imagedraw_pieslice.png", 1)
+
+
 @pytest.mark.parametrize("points", POINTS)
-def test_polygon(points):
+def test_polygon(points: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)
@@ -127,7 +185,7 @@ def test_polygon(points):
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_rectangle(bbox):
+def test_rectangle(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)
@@ -141,7 +199,7 @@ def test_rectangle(bbox):
     assert_image_equal_tofile(im, "Tests/images/imagedraw_rectangle.png")
 
 
-def test_big_rectangle():
+def test_big_rectangle() -> None:
     # Test drawing a rectangle bigger than the image
     # Arrange
     im = Image.new("RGB", (W, H))
@@ -158,7 +216,7 @@ def test_big_rectangle():
 
 
 @skip_unless_feature("freetype2")
-def test_text():
+def test_text() -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)
@@ -173,7 +231,7 @@ def test_text():
 
 
 @skip_unless_feature("freetype2")
-def test_textbbox():
+def test_textbbox() -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)
@@ -188,7 +246,7 @@ def test_textbbox():
 
 
 @skip_unless_feature("freetype2")
-def test_textsize_empty_string():
+def test_textsize_empty_string() -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)
@@ -204,7 +262,7 @@ def test_textsize_empty_string():
 
 
 @skip_unless_feature("freetype2")
-def test_flush():
+def test_flush() -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)
diff --git a/Tests/test_imageenhance.py b/Tests/test_imageenhance.py
index 221ef8cdb..6ebc61e1b 100644
--- a/Tests/test_imageenhance.py
+++ b/Tests/test_imageenhance.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, ImageEnhance
@@ -5,7 +7,7 @@ from PIL import Image, ImageEnhance
 from .helper import assert_image_equal, hopper
 
 
-def test_sanity():
+def test_sanity() -> None:
     # FIXME: assert_image
     # Implicit asserts no exception:
     ImageEnhance.Color(hopper()).enhance(0.5)
@@ -14,13 +16,13 @@ def test_sanity():
     ImageEnhance.Sharpness(hopper()).enhance(0.5)
 
 
-def test_crash():
+def test_crash() -> None:
     # crashes on small images
     im = Image.new("RGB", (1, 1))
     ImageEnhance.Sharpness(im).enhance(0.5)
 
 
-def _half_transparent_image():
+def _half_transparent_image() -> Image.Image:
     # returns an image, half transparent, half solid
     im = hopper("RGB")
 
@@ -32,7 +34,9 @@ def _half_transparent_image():
     return im
 
 
-def _check_alpha(im, original, op, amount):
+def _check_alpha(
+    im: Image.Image, original: Image.Image, op: str, amount: float
+) -> None:
     assert im.getbands() == original.getbands()
     assert_image_equal(
         im.getchannel("A"),
@@ -42,7 +46,7 @@ def _check_alpha(im, original, op, amount):
 
 
 @pytest.mark.parametrize("op", ("Color", "Brightness", "Contrast", "Sharpness"))
-def test_alpha(op):
+def test_alpha(op: str) -> None:
     # Issue https://github.com/python-pillow/Pillow/issues/899
     # Is alpha preserved through image enhancement?
 
diff --git a/Tests/test_imagefile.py b/Tests/test_imagefile.py
index 412bc10d9..1ee684926 100644
--- a/Tests/test_imagefile.py
+++ b/Tests/test_imagefile.py
@@ -1,4 +1,7 @@
+from __future__ import annotations
+
 from io import BytesIO
+from typing import Any
 
 import pytest
 
@@ -28,8 +31,8 @@ SAFEBLOCK = ImageFile.SAFEBLOCK
 
 
 class TestImageFile:
-    def test_parser(self):
-        def roundtrip(format):
+    def test_parser(self) -> None:
+        def roundtrip(format: str) -> tuple[Image.Image, Image.Image]:
             im = hopper("L").resize((1000, 1000), Image.Resampling.NEAREST)
             if format in ("MSP", "XBM"):
                 im = im.convert("1")
@@ -82,16 +85,16 @@ class TestImageFile:
         with pytest.raises(OSError):
             roundtrip("PDF")
 
-    def test_ico(self):
+    def test_ico(self) -> None:
         with open("Tests/images/python.ico", "rb") as f:
             data = f.read()
         with ImageFile.Parser() as p:
             p.feed(data)
+            assert p.image is not None
             assert (48, 48) == p.image.size
 
     @skip_unless_feature("webp")
-    @skip_unless_feature("webp_anim")
-    def test_incremental_webp(self):
+    def test_incremental_webp(self) -> None:
         with ImageFile.Parser() as p:
             with open("Tests/images/hopper.webp", "rb") as f:
                 p.feed(f.read(1024))
@@ -100,10 +103,11 @@ class TestImageFile:
                 assert not p.image
 
                 p.feed(f.read())
+            assert p.image is not None
             assert (128, 128) == p.image.size
 
     @skip_unless_feature("zlib")
-    def test_safeblock(self):
+    def test_safeblock(self) -> None:
         im1 = hopper()
 
         try:
@@ -114,16 +118,17 @@ class TestImageFile:
 
         assert_image_equal(im1, im2)
 
-    def test_raise_oserror(self):
-        with pytest.raises(OSError):
-            ImageFile.raise_oserror(1)
+    def test_raise_oserror(self) -> None:
+        with pytest.warns(DeprecationWarning):
+            with pytest.raises(OSError):
+                ImageFile.raise_oserror(1)
 
-    def test_raise_typeerror(self):
+    def test_raise_typeerror(self) -> None:
         with pytest.raises(TypeError):
             parser = ImageFile.Parser()
-            parser.feed(1)
+            parser.feed(1)  # type: ignore[arg-type]
 
-    def test_negative_stride(self):
+    def test_negative_stride(self) -> None:
         with open("Tests/images/raw_negative_stride.bin", "rb") as f:
             input = f.read()
         p = ImageFile.Parser()
@@ -131,24 +136,24 @@ class TestImageFile:
         with pytest.raises(OSError):
             p.close()
 
-    def test_no_format(self):
+    def test_no_format(self) -> None:
         buf = BytesIO(b"\x00" * 255)
 
         class DummyImageFile(ImageFile.ImageFile):
-            def _open(self):
-                self.mode = "RGB"
+            def _open(self) -> None:
+                self._mode = "RGB"
                 self._size = (1, 1)
 
         im = DummyImageFile(buf)
         assert im.format is None
         assert im.get_format_mimetype() is None
 
-    def test_oserror(self):
+    def test_oserror(self) -> None:
         im = Image.new("RGB", (1, 1))
         with pytest.raises(OSError):
             im.save(BytesIO(), "JPEG2000", num_resolutions=2)
 
-    def test_truncated(self):
+    def test_truncated(self) -> None:
         b = BytesIO(
             b"BM000000000000"  # head_data
             + _binary.o32le(
@@ -163,7 +168,7 @@ class TestImageFile:
         assert str(e.value) == "Truncated File Read"
 
     @skip_unless_feature("zlib")
-    def test_truncated_with_errors(self):
+    def test_truncated_with_errors(self) -> None:
         with Image.open("Tests/images/truncated_image.png") as im:
             with pytest.raises(OSError):
                 im.load()
@@ -173,7 +178,7 @@ class TestImageFile:
                 im.load()
 
     @skip_unless_feature("zlib")
-    def test_truncated_without_errors(self):
+    def test_truncated_without_errors(self) -> None:
         with Image.open("Tests/images/truncated_image.png") as im:
             ImageFile.LOAD_TRUNCATED_IMAGES = True
             try:
@@ -182,13 +187,13 @@ class TestImageFile:
                 ImageFile.LOAD_TRUNCATED_IMAGES = False
 
     @skip_unless_feature("zlib")
-    def test_broken_datastream_with_errors(self):
+    def test_broken_datastream_with_errors(self) -> None:
         with Image.open("Tests/images/broken_data_stream.png") as im:
             with pytest.raises(OSError):
                 im.load()
 
     @skip_unless_feature("zlib")
-    def test_broken_datastream_without_errors(self):
+    def test_broken_datastream_without_errors(self) -> None:
         with Image.open("Tests/images/broken_data_stream.png") as im:
             ImageFile.LOAD_TRUNCATED_IMAGES = True
             try:
@@ -198,16 +203,30 @@ class TestImageFile:
 
 
 class MockPyDecoder(ImageFile.PyDecoder):
-    def decode(self, buffer):
+    last: MockPyDecoder
+
+    def __init__(self, mode: str, *args: Any) -> None:
+        MockPyDecoder.last = self
+
+        super().__init__(mode, *args)
+
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
         # eof
         return -1, 0
 
 
 class MockPyEncoder(ImageFile.PyEncoder):
-    def encode(self, buffer):
+    last: MockPyEncoder | None
+
+    def __init__(self, mode: str, *args: Any) -> None:
+        MockPyEncoder.last = self
+
+        super().__init__(mode, *args)
+
+    def encode(self, bufsize: int) -> tuple[int, int, bytes]:
         return 1, 1, b""
 
-    def cleanup(self):
+    def cleanup(self) -> None:
         self.cleanup_called = True
 
 
@@ -215,141 +234,154 @@ xoff, yoff, xsize, ysize = 10, 20, 100, 100
 
 
 class MockImageFile(ImageFile.ImageFile):
-    def _open(self):
+    def _open(self) -> None:
         self.rawmode = "RGBA"
-        self.mode = "RGBA"
+        self._mode = "RGBA"
         self._size = (200, 200)
-        self.tile = [("MOCK", (xoff, yoff, xoff + xsize, yoff + ysize), 32, None)]
+        self.tile = [
+            ImageFile._Tile("MOCK", (xoff, yoff, xoff + xsize, yoff + ysize), 32, None)
+        ]
 
 
 class CodecsTest:
     @classmethod
-    def setup_class(cls):
-        cls.decoder = MockPyDecoder(None)
-        cls.encoder = MockPyEncoder(None)
-
-        def decoder_closure(mode, *args):
-            cls.decoder.__init__(mode, *args)
-            return cls.decoder
-
-        def encoder_closure(mode, *args):
-            cls.encoder.__init__(mode, *args)
-            return cls.encoder
-
-        Image.register_decoder("MOCK", decoder_closure)
-        Image.register_encoder("MOCK", encoder_closure)
+    def setup_class(cls) -> None:
+        Image.register_decoder("MOCK", MockPyDecoder)
+        Image.register_encoder("MOCK", MockPyEncoder)
 
 
 class TestPyDecoder(CodecsTest):
-    def test_setimage(self):
+    def test_setimage(self) -> None:
         buf = BytesIO(b"\x00" * 255)
 
         im = MockImageFile(buf)
 
         im.load()
 
-        assert self.decoder.state.xoff == xoff
-        assert self.decoder.state.yoff == yoff
-        assert self.decoder.state.xsize == xsize
-        assert self.decoder.state.ysize == ysize
+        assert MockPyDecoder.last.state.xoff == xoff
+        assert MockPyDecoder.last.state.yoff == yoff
+        assert MockPyDecoder.last.state.xsize == xsize
+        assert MockPyDecoder.last.state.ysize == ysize
 
         with pytest.raises(ValueError):
-            self.decoder.set_as_raw(b"\x00")
+            MockPyDecoder.last.set_as_raw(b"\x00")
 
-    def test_extents_none(self):
+    def test_extents_none(self) -> None:
         buf = BytesIO(b"\x00" * 255)
 
         im = MockImageFile(buf)
-        im.tile = [("MOCK", None, 32, None)]
+        im.tile = [ImageFile._Tile("MOCK", None, 32, None)]
 
         im.load()
 
-        assert self.decoder.state.xoff == 0
-        assert self.decoder.state.yoff == 0
-        assert self.decoder.state.xsize == 200
-        assert self.decoder.state.ysize == 200
+        assert MockPyDecoder.last.state.xoff == 0
+        assert MockPyDecoder.last.state.yoff == 0
+        assert MockPyDecoder.last.state.xsize == 200
+        assert MockPyDecoder.last.state.ysize == 200
 
-    def test_negsize(self):
+    def test_negsize(self) -> None:
         buf = BytesIO(b"\x00" * 255)
 
         im = MockImageFile(buf)
-        im.tile = [("MOCK", (xoff, yoff, -10, yoff + ysize), 32, None)]
+        im.tile = [ImageFile._Tile("MOCK", (xoff, yoff, -10, yoff + ysize), 32, None)]
 
         with pytest.raises(ValueError):
             im.load()
 
-        im.tile = [("MOCK", (xoff, yoff, xoff + xsize, -10), 32, None)]
+        im.tile = [ImageFile._Tile("MOCK", (xoff, yoff, xoff + xsize, -10), 32, None)]
         with pytest.raises(ValueError):
             im.load()
 
-    def test_oversize(self):
+    def test_oversize(self) -> None:
         buf = BytesIO(b"\x00" * 255)
 
         im = MockImageFile(buf)
-        im.tile = [("MOCK", (xoff, yoff, xoff + xsize + 100, yoff + ysize), 32, None)]
+        im.tile = [
+            ImageFile._Tile(
+                "MOCK", (xoff, yoff, xoff + xsize + 100, yoff + ysize), 32, None
+            )
+        ]
 
         with pytest.raises(ValueError):
             im.load()
 
-        im.tile = [("MOCK", (xoff, yoff, xoff + xsize, yoff + ysize + 100), 32, None)]
+        im.tile = [
+            ImageFile._Tile(
+                "MOCK", (xoff, yoff, xoff + xsize, yoff + ysize + 100), 32, None
+            )
+        ]
         with pytest.raises(ValueError):
             im.load()
 
-    def test_decode(self):
-        decoder = ImageFile.PyDecoder(None)
+    def test_decode(self) -> None:
+        decoder = ImageFile.PyDecoder("")
         with pytest.raises(NotImplementedError):
-            decoder.decode(None)
+            decoder.decode(b"")
 
 
 class TestPyEncoder(CodecsTest):
-    def test_setimage(self):
+    def test_setimage(self) -> None:
         buf = BytesIO(b"\x00" * 255)
 
         im = MockImageFile(buf)
 
         fp = BytesIO()
         ImageFile._save(
-            im, fp, [("MOCK", (xoff, yoff, xoff + xsize, yoff + ysize), 0, "RGB")]
+            im,
+            fp,
+            [
+                ImageFile._Tile(
+                    "MOCK", (xoff, yoff, xoff + xsize, yoff + ysize), 0, "RGB"
+                )
+            ],
         )
 
-        assert self.encoder.state.xoff == xoff
-        assert self.encoder.state.yoff == yoff
-        assert self.encoder.state.xsize == xsize
-        assert self.encoder.state.ysize == ysize
+        assert MockPyEncoder.last
+        assert MockPyEncoder.last.state.xoff == xoff
+        assert MockPyEncoder.last.state.yoff == yoff
+        assert MockPyEncoder.last.state.xsize == xsize
+        assert MockPyEncoder.last.state.ysize == ysize
 
-    def test_extents_none(self):
+    def test_extents_none(self) -> None:
         buf = BytesIO(b"\x00" * 255)
 
         im = MockImageFile(buf)
-        im.tile = [("MOCK", None, 32, None)]
+        im.tile = [ImageFile._Tile("MOCK", None, 32, None)]
 
         fp = BytesIO()
-        ImageFile._save(im, fp, [("MOCK", None, 0, "RGB")])
+        ImageFile._save(im, fp, [ImageFile._Tile("MOCK", None, 0, "RGB")])
 
-        assert self.encoder.state.xoff == 0
-        assert self.encoder.state.yoff == 0
-        assert self.encoder.state.xsize == 200
-        assert self.encoder.state.ysize == 200
+        assert MockPyEncoder.last
+        assert MockPyEncoder.last.state.xoff == 0
+        assert MockPyEncoder.last.state.yoff == 0
+        assert MockPyEncoder.last.state.xsize == 200
+        assert MockPyEncoder.last.state.ysize == 200
 
-    def test_negsize(self):
+    def test_negsize(self) -> None:
         buf = BytesIO(b"\x00" * 255)
 
         im = MockImageFile(buf)
 
         fp = BytesIO()
-        self.encoder.cleanup_called = False
+        MockPyEncoder.last = None
         with pytest.raises(ValueError):
             ImageFile._save(
-                im, fp, [("MOCK", (xoff, yoff, -10, yoff + ysize), 0, "RGB")]
+                im,
+                fp,
+                [ImageFile._Tile("MOCK", (xoff, yoff, -10, yoff + ysize), 0, "RGB")],
             )
-        assert self.encoder.cleanup_called
+        last: MockPyEncoder | None = MockPyEncoder.last
+        assert last
+        assert last.cleanup_called
 
         with pytest.raises(ValueError):
             ImageFile._save(
-                im, fp, [("MOCK", (xoff, yoff, xoff + xsize, -10), 0, "RGB")]
+                im,
+                fp,
+                [ImageFile._Tile("MOCK", (xoff, yoff, xoff + xsize, -10), 0, "RGB")],
             )
 
-    def test_oversize(self):
+    def test_oversize(self) -> None:
         buf = BytesIO(b"\x00" * 255)
 
         im = MockImageFile(buf)
@@ -359,20 +391,28 @@ class TestPyEncoder(CodecsTest):
             ImageFile._save(
                 im,
                 fp,
-                [("MOCK", (xoff, yoff, xoff + xsize + 100, yoff + ysize), 0, "RGB")],
+                [
+                    ImageFile._Tile(
+                        "MOCK", (xoff, yoff, xoff + xsize + 100, yoff + ysize), 0, "RGB"
+                    )
+                ],
             )
 
         with pytest.raises(ValueError):
             ImageFile._save(
                 im,
                 fp,
-                [("MOCK", (xoff, yoff, xoff + xsize, yoff + ysize + 100), 0, "RGB")],
+                [
+                    ImageFile._Tile(
+                        "MOCK", (xoff, yoff, xoff + xsize, yoff + ysize + 100), 0, "RGB"
+                    )
+                ],
             )
 
-    def test_encode(self):
-        encoder = ImageFile.PyEncoder(None)
+    def test_encode(self) -> None:
+        encoder = ImageFile.PyEncoder("")
         with pytest.raises(NotImplementedError):
-            encoder.encode(None)
+            encoder.encode(0)
 
         bytes_consumed, errcode = encoder.encode_to_pyfd()
         assert bytes_consumed == 0
@@ -383,8 +423,8 @@ class TestPyEncoder(CodecsTest):
             encoder.encode_to_pyfd()
 
         with pytest.raises(NotImplementedError):
-            encoder.encode_to_file(None, None)
+            encoder.encode_to_file(0, 0)
 
-    def test_zero_height(self):
+    def test_zero_height(self) -> None:
         with pytest.raises(UnidentifiedImageError):
             Image.open("Tests/images/zero_height.j2k")
diff --git a/Tests/test_imagefont.py b/Tests/test_imagefont.py
index 7fa8ff8cb..6a0a940b9 100644
--- a/Tests/test_imagefont.py
+++ b/Tests/test_imagefont.py
@@ -1,14 +1,20 @@
+from __future__ import annotations
+
 import copy
 import os
 import re
 import shutil
 import sys
+import tempfile
 from io import BytesIO
+from pathlib import Path
+from typing import Any, BinaryIO
 
 import pytest
 from packaging.version import parse as parse_version
 
 from PIL import Image, ImageDraw, ImageFont, features
+from PIL._typing import StrOrBytesPath
 
 from .helper import (
     assert_image_equal,
@@ -28,8 +34,10 @@ TEST_TEXT = "hey you\nyou are awesome\nthis looks awkward"
 pytestmark = skip_unless_feature("freetype2")
 
 
-def test_sanity():
-    assert re.search(r"\d+\.\d+\.\d+$", features.version_module("freetype2"))
+def test_sanity() -> None:
+    version = features.version_module("freetype2")
+    assert version is not None
+    assert re.search(r"\d+\.\d+\.\d+$", version)
 
 
 @pytest.fixture(
@@ -39,16 +47,16 @@ def test_sanity():
         pytest.param(ImageFont.Layout.RAQM, marks=skip_unless_feature("raqm")),
     ],
 )
-def layout_engine(request):
+def layout_engine(request: pytest.FixtureRequest) -> ImageFont.Layout:
     return request.param
 
 
 @pytest.fixture(scope="module")
-def font(layout_engine):
+def font(layout_engine: ImageFont.Layout) -> ImageFont.FreeTypeFont:
     return ImageFont.truetype(FONT_PATH, FONT_SIZE, layout_engine=layout_engine)
 
 
-def test_font_properties(font):
+def test_font_properties(font: ImageFont.FreeTypeFont) -> None:
     assert font.path == FONT_PATH
     assert font.size == FONT_SIZE
 
@@ -64,7 +72,9 @@ def test_font_properties(font):
     assert font_copy.path == second_font_path
 
 
-def _render(font, layout_engine):
+def _render(
+    font: StrOrBytesPath | BinaryIO, layout_engine: ImageFont.Layout
+) -> Image.Image:
     txt = "Hello World!"
     ttf = ImageFont.truetype(font, FONT_SIZE, layout_engine=layout_engine)
     ttf.getbbox(txt)
@@ -76,12 +86,13 @@ def _render(font, layout_engine):
     return img
 
 
-def test_font_with_name(layout_engine):
-    _render(FONT_PATH, layout_engine)
+@pytest.mark.parametrize("font", (FONT_PATH, Path(FONT_PATH)))
+def test_font_with_name(layout_engine: ImageFont.Layout, font: str | Path) -> None:
+    _render(font, layout_engine)
 
 
-def test_font_with_filelike(layout_engine):
-    def _font_as_bytes():
+def test_font_with_filelike(layout_engine: ImageFont.Layout) -> None:
+    def _font_as_bytes() -> BytesIO:
         with open(FONT_PATH, "rb") as f:
             font_bytes = BytesIO(f.read())
         return font_bytes
@@ -98,12 +109,12 @@ def test_font_with_filelike(layout_engine):
     #   _render(shared_bytes)
 
 
-def test_font_with_open_file(layout_engine):
+def test_font_with_open_file(layout_engine: ImageFont.Layout) -> None:
     with open(FONT_PATH, "rb") as f:
         _render(f, layout_engine)
 
 
-def test_render_equal(layout_engine):
+def test_render_equal(layout_engine: ImageFont.Layout) -> None:
     img_path = _render(FONT_PATH, layout_engine)
     with open(FONT_PATH, "rb") as f:
         font_filelike = BytesIO(f.read())
@@ -112,7 +123,7 @@ def test_render_equal(layout_engine):
     assert_image_equal(img_path, img_filelike)
 
 
-def test_non_ascii_path(tmp_path, layout_engine):
+def test_non_ascii_path(tmp_path: Path, layout_engine: ImageFont.Layout) -> None:
     tempfile = str(tmp_path / ("temp_" + chr(128) + ".ttf"))
     try:
         shutil.copy(FONT_PATH, tempfile)
@@ -122,7 +133,7 @@ def test_non_ascii_path(tmp_path, layout_engine):
     ImageFont.truetype(tempfile, FONT_SIZE, layout_engine=layout_engine)
 
 
-def test_transparent_background(font):
+def test_transparent_background(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new(mode="RGBA", size=(300, 100))
     draw = ImageDraw.Draw(im)
 
@@ -136,18 +147,20 @@ def test_transparent_background(font):
     assert_image_similar_tofile(im.convert("L"), target, 0.01)
 
 
-def test_I16(font):
+def test_I16(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new(mode="I;16", size=(300, 100))
     draw = ImageDraw.Draw(im)
 
     txt = "Hello World!"
-    draw.text((10, 10), txt, font=font)
+    draw.text((10, 10), txt, fill=0xFFFE, font=font)
+
+    assert im.getpixel((12, 14)) == 0xFFFE
 
     target = "Tests/images/transparent_background_text_L.png"
     assert_image_similar_tofile(im.convert("L"), target, 0.01)
 
 
-def test_textbbox_equal(font):
+def test_textbbox_equal(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new(mode="RGB", size=(300, 100))
     draw = ImageDraw.Draw(im)
 
@@ -175,8 +188,14 @@ def test_textbbox_equal(font):
     ),
 )
 def test_getlength(
-    text, mode, fontname, size, layout_engine, length_basic, length_raqm
-):
+    text: str,
+    mode: str,
+    fontname: str,
+    size: int,
+    layout_engine: ImageFont.Layout,
+    length_basic: int,
+    length_raqm: float,
+) -> None:
     f = ImageFont.truetype("Tests/fonts/" + fontname, size, layout_engine=layout_engine)
 
     im = Image.new(mode, (1, 1), 0)
@@ -191,7 +210,7 @@ def test_getlength(
         assert length == length_raqm
 
 
-def test_float_size():
+def test_float_size(layout_engine: ImageFont.Layout) -> None:
     lengths = []
     for size in (48, 48.5, 49):
         f = ImageFont.truetype(
@@ -201,12 +220,12 @@ def test_float_size():
     assert lengths[0] != lengths[1] != lengths[2]
 
 
-def test_render_multiline(font):
+def test_render_multiline(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new(mode="RGB", size=(300, 100))
     draw = ImageDraw.Draw(im)
     line_spacing = font.getbbox("A")[3] + 4
     lines = TEST_TEXT.split("\n")
-    y = 0
+    y: float = 0
     for line in lines:
         draw.text((0, y), line, font=font)
         y += line_spacing
@@ -217,7 +236,7 @@ def test_render_multiline(font):
     assert_image_similar_tofile(im, "Tests/images/multiline_text.png", 6.2)
 
 
-def test_render_multiline_text(font):
+def test_render_multiline_text(font: ImageFont.FreeTypeFont) -> None:
     # Test that text() correctly connects to multiline_text()
     # and that align defaults to left
     im = Image.new(mode="RGB", size=(300, 100))
@@ -237,7 +256,9 @@ def test_render_multiline_text(font):
 @pytest.mark.parametrize(
     "align, ext", (("left", ""), ("center", "_center"), ("right", "_right"))
 )
-def test_render_multiline_text_align(font, align, ext):
+def test_render_multiline_text_align(
+    font: ImageFont.FreeTypeFont, align: str, ext: str
+) -> None:
     im = Image.new(mode="RGB", size=(300, 100))
     draw = ImageDraw.Draw(im)
     draw.multiline_text((0, 0), TEST_TEXT, font=font, align=align)
@@ -245,7 +266,7 @@ def test_render_multiline_text_align(font, align, ext):
     assert_image_similar_tofile(im, f"Tests/images/multiline_text{ext}.png", 0.01)
 
 
-def test_unknown_align(font):
+def test_unknown_align(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new(mode="RGB", size=(300, 100))
     draw = ImageDraw.Draw(im)
 
@@ -254,14 +275,14 @@ def test_unknown_align(font):
         draw.multiline_text((0, 0), TEST_TEXT, font=font, align="unknown")
 
 
-def test_draw_align(font):
+def test_draw_align(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new("RGB", (300, 100), "white")
     draw = ImageDraw.Draw(im)
     line = "some text"
     draw.text((100, 40), line, (0, 0, 0), font=font, align="left")
 
 
-def test_multiline_bbox(font):
+def test_multiline_bbox(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new(mode="RGB", size=(300, 100))
     draw = ImageDraw.Draw(im)
 
@@ -279,7 +300,7 @@ def test_multiline_bbox(font):
     draw.textbbox((0, 0), TEST_TEXT, font=font, spacing=4)
 
 
-def test_multiline_width(font):
+def test_multiline_width(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new(mode="RGB", size=(300, 100))
     draw = ImageDraw.Draw(im)
 
@@ -289,7 +310,7 @@ def test_multiline_width(font):
     )
 
 
-def test_multiline_spacing(font):
+def test_multiline_spacing(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new(mode="RGB", size=(300, 100))
     draw = ImageDraw.Draw(im)
     draw.multiline_text((0, 0), TEST_TEXT, font=font, spacing=10)
@@ -300,9 +321,11 @@ def test_multiline_spacing(font):
 @pytest.mark.parametrize(
     "orientation", (Image.Transpose.ROTATE_90, Image.Transpose.ROTATE_270)
 )
-def test_rotated_transposed_font(font, orientation):
-    img_grey = Image.new("L", (100, 100))
-    draw = ImageDraw.Draw(img_grey)
+def test_rotated_transposed_font(
+    font: ImageFont.FreeTypeFont, orientation: Image.Transpose
+) -> None:
+    img_gray = Image.new("L", (100, 100))
+    draw = ImageDraw.Draw(img_gray)
     word = "testing"
 
     transposed_font = ImageFont.TransposedFont(font, orientation=orientation)
@@ -341,9 +364,11 @@ def test_rotated_transposed_font(font, orientation):
         Image.Transpose.FLIP_TOP_BOTTOM,
     ),
 )
-def test_unrotated_transposed_font(font, orientation):
-    img_grey = Image.new("L", (100, 100))
-    draw = ImageDraw.Draw(img_grey)
+def test_unrotated_transposed_font(
+    font: ImageFont.FreeTypeFont, orientation: Image.Transpose
+) -> None:
+    img_gray = Image.new("L", (100, 100))
+    draw = ImageDraw.Draw(img_gray)
     word = "testing"
 
     transposed_font = ImageFont.TransposedFont(font, orientation=orientation)
@@ -376,7 +401,9 @@ def test_unrotated_transposed_font(font, orientation):
 @pytest.mark.parametrize(
     "orientation", (Image.Transpose.ROTATE_90, Image.Transpose.ROTATE_270)
 )
-def test_rotated_transposed_font_get_mask(font, orientation):
+def test_rotated_transposed_font_get_mask(
+    font: ImageFont.FreeTypeFont, orientation: Image.Transpose
+) -> None:
     # Arrange
     text = "mask this"
     transposed_font = ImageFont.TransposedFont(font, orientation=orientation)
@@ -397,7 +424,9 @@ def test_rotated_transposed_font_get_mask(font, orientation):
         Image.Transpose.FLIP_TOP_BOTTOM,
     ),
 )
-def test_unrotated_transposed_font_get_mask(font, orientation):
+def test_unrotated_transposed_font_get_mask(
+    font: ImageFont.FreeTypeFont, orientation: Image.Transpose
+) -> None:
     # Arrange
     text = "mask this"
     transposed_font = ImageFont.TransposedFont(font, orientation=orientation)
@@ -409,11 +438,11 @@ def test_unrotated_transposed_font_get_mask(font, orientation):
     assert mask.size == (108, 13)
 
 
-def test_free_type_font_get_name(font):
+def test_free_type_font_get_name(font: ImageFont.FreeTypeFont) -> None:
     assert ("FreeMono", "Regular") == font.getname()
 
 
-def test_free_type_font_get_metrics(font):
+def test_free_type_font_get_metrics(font: ImageFont.FreeTypeFont) -> None:
     ascent, descent = font.getmetrics()
 
     assert isinstance(ascent, int)
@@ -421,7 +450,7 @@ def test_free_type_font_get_metrics(font):
     assert (ascent, descent) == (16, 4)
 
 
-def test_free_type_font_get_mask(font):
+def test_free_type_font_get_mask(font: ImageFont.FreeTypeFont) -> None:
     # Arrange
     text = "mask this"
 
@@ -432,26 +461,52 @@ def test_free_type_font_get_mask(font):
     assert mask.size == (108, 13)
 
 
-def test_load_path_not_found():
+def test_load_when_image_not_found() -> None:
+    with tempfile.NamedTemporaryFile(delete=False) as tmp:
+        pass
+    with pytest.raises(OSError) as e:
+        ImageFont.load(tmp.name)
+
+    os.unlink(tmp.name)
+
+    root = os.path.splitext(tmp.name)[0]
+    assert str(e.value) == f"cannot find glyph data file {root}.{{gif|pbm|png}}"
+
+
+def test_load_path_not_found() -> None:
     # Arrange
     filename = "somefilenamethatdoesntexist.ttf"
 
     # Act/Assert
-    with pytest.raises(OSError):
+    with pytest.raises(OSError) as e:
         ImageFont.load_path(filename)
+
+    # The file doesn't exist, so don't suggest `load`
+    assert filename in str(e.value)
+    assert "did you mean" not in str(e.value)
     with pytest.raises(OSError):
         ImageFont.truetype(filename)
 
 
-def test_load_non_font_bytes():
+def test_load_path_existing_path() -> None:
+    with tempfile.NamedTemporaryFile() as tmp:
+        with pytest.raises(OSError) as e:
+            ImageFont.load_path(tmp.name)
+
+    # The file exists, so the error message suggests to use `load` instead
+    assert tmp.name in str(e.value)
+    assert " did you mean" in str(e.value)
+
+
+def test_load_non_font_bytes() -> None:
     with open("Tests/images/hopper.jpg", "rb") as f:
         with pytest.raises(OSError):
             ImageFont.truetype(f)
 
 
-def test_default_font():
+def test_default_font() -> None:
     # Arrange
-    txt = 'This is a "better than nothing" default font.'
+    txt = "This is a default font using FreeType support."
     im = Image.new(mode="RGB", size=(300, 100))
     draw = ImageDraw.Draw(im)
 
@@ -459,21 +514,24 @@ def test_default_font():
     default_font = ImageFont.load_default()
     draw.text((10, 10), txt, font=default_font)
 
+    larger_default_font = ImageFont.load_default(size=14)
+    draw.text((10, 60), txt, font=larger_default_font)
+
     # Assert
-    assert_image_equal_tofile(im, "Tests/images/default_font.png")
+    assert_image_equal_tofile(im, "Tests/images/default_font_freetype.png")
 
 
-@pytest.mark.parametrize("mode", (None, "1", "RGBA"))
-def test_getbbox(font, mode):
+@pytest.mark.parametrize("mode", ("", "1", "RGBA"))
+def test_getbbox(font: ImageFont.FreeTypeFont, mode: str) -> None:
     assert (0, 4, 12, 16) == font.getbbox("A", mode)
 
 
-def test_getbbox_empty(font):
+def test_getbbox_empty(font: ImageFont.FreeTypeFont) -> None:
     # issue #2614, should not crash.
     assert (0, 0, 0, 0) == font.getbbox("")
 
 
-def test_render_empty(font):
+def test_render_empty(font: ImageFont.FreeTypeFont) -> None:
     # issue 2666
     im = Image.new(mode="RGB", size=(300, 100))
     target = im.copy()
@@ -483,15 +541,7 @@ def test_render_empty(font):
     assert_image_equal(im, target)
 
 
-def test_unicode_pilfont():
-    # should not segfault, should return UnicodeDecodeError
-    # issue #2826
-    font = ImageFont.load_default()
-    with pytest.raises(UnicodeEncodeError):
-        font.getbbox("’")
-
-
-def test_unicode_extended(layout_engine):
+def test_unicode_extended(layout_engine: ImageFont.Layout) -> None:
     # issue #3777
     text = "A\u278A\U0001F12B"
     target = "Tests/images/unicode_extended.png"
@@ -514,21 +564,22 @@ def test_unicode_extended(layout_engine):
     (("linux", "/usr/local/share/fonts"), ("darwin", "/System/Library/Fonts")),
 )
 @pytest.mark.skipif(is_win32(), reason="requires Unix or macOS")
-def test_find_font(monkeypatch, platform, font_directory):
-    def _test_fake_loading_font(path_to_fake, fontname):
+def test_find_font(
+    monkeypatch: pytest.MonkeyPatch, platform: str, font_directory: str
+) -> None:
+    def _test_fake_loading_font(path_to_fake: str, fontname: str) -> None:
         # Make a copy of FreeTypeFont so we can patch the original
         free_type_font = copy.deepcopy(ImageFont.FreeTypeFont)
         with monkeypatch.context() as m:
             m.setattr(ImageFont, "_FreeTypeFont", free_type_font, raising=False)
 
-            def loadable_font(filepath, size, index, encoding, *args, **kwargs):
+            def loadable_font(
+                filepath: str, size: int, index: int, encoding: str, *args: Any
+            ) -> ImageFont.FreeTypeFont:
+                _freeTypeFont = getattr(ImageFont, "_FreeTypeFont")
                 if filepath == path_to_fake:
-                    return ImageFont._FreeTypeFont(
-                        FONT_PATH, size, index, encoding, *args, **kwargs
-                    )
-                return ImageFont._FreeTypeFont(
-                    filepath, size, index, encoding, *args, **kwargs
-                )
+                    return _freeTypeFont(FONT_PATH, size, index, encoding, *args)
+                return _freeTypeFont(filepath, size, index, encoding, *args)
 
             m.setattr(ImageFont, "FreeTypeFont", loadable_font)
             font = ImageFont.truetype(fontname)
@@ -540,9 +591,10 @@ def test_find_font(monkeypatch, platform, font_directory):
     # catching syntax like errors
     monkeypatch.setattr(sys, "platform", platform)
     if platform == "linux":
+        monkeypatch.setenv("XDG_DATA_HOME", os.path.expanduser("~/.local/share"))
         monkeypatch.setenv("XDG_DATA_DIRS", "/usr/share/:/usr/local/share/")
 
-    def fake_walker(path):
+    def fake_walker(path: str) -> list[tuple[str, list[str], list[str]]]:
         if path == font_directory:
             return [
                 (
@@ -566,7 +618,7 @@ def test_find_font(monkeypatch, platform, font_directory):
     _test_fake_loading_font(font_directory + "/Duplicate.ttf", "Duplicate")
 
 
-def test_imagefont_getters(font):
+def test_imagefont_getters(font: ImageFont.FreeTypeFont) -> None:
     assert font.getmetrics() == (16, 4)
     assert font.font.ascent == 16
     assert font.font.descent == 4
@@ -587,7 +639,7 @@ def test_imagefont_getters(font):
 
 
 @pytest.mark.parametrize("stroke_width", (0, 2))
-def test_getsize_stroke(font, stroke_width):
+def test_getsize_stroke(font: ImageFont.FreeTypeFont, stroke_width: int) -> None:
     assert font.getbbox("A", stroke_width=stroke_width) == (
         0 - stroke_width,
         4 - stroke_width,
@@ -596,7 +648,7 @@ def test_getsize_stroke(font, stroke_width):
     )
 
 
-def test_complex_font_settings():
+def test_complex_font_settings() -> None:
     t = ImageFont.truetype(FONT_PATH, FONT_SIZE, layout_engine=ImageFont.Layout.BASIC)
     with pytest.raises(KeyError):
         t.getmask("абвг", direction="rtl")
@@ -606,8 +658,10 @@ def test_complex_font_settings():
         t.getmask("абвг", language="sr")
 
 
-def test_variation_get(font):
-    freetype = parse_version(features.version_module("freetype2"))
+def test_variation_get(font: ImageFont.FreeTypeFont) -> None:
+    version = features.version_module("freetype2")
+    assert version is not None
+    freetype = parse_version(version)
     if freetype < parse_version("2.9.1"):
         with pytest.raises(NotImplementedError):
             font.get_variation_names()
@@ -661,7 +715,7 @@ def test_variation_get(font):
     ]
 
 
-def _check_text(font, path, epsilon):
+def _check_text(font: ImageFont.FreeTypeFont, path: str, epsilon: float) -> None:
     im = Image.new("RGB", (100, 75), "white")
     d = ImageDraw.Draw(im)
     d.text((10, 10), "Text", font=font, fill="black")
@@ -676,8 +730,10 @@ def _check_text(font, path, epsilon):
             raise
 
 
-def test_variation_set_by_name(font):
-    freetype = parse_version(features.version_module("freetype2"))
+def test_variation_set_by_name(font: ImageFont.FreeTypeFont) -> None:
+    version = features.version_module("freetype2")
+    assert version is not None
+    freetype = parse_version(version)
     if freetype < parse_version("2.9.1"):
         with pytest.raises(NotImplementedError):
             font.set_variation_by_name("Bold")
@@ -688,21 +744,23 @@ def test_variation_set_by_name(font):
 
     font = ImageFont.truetype("Tests/fonts/AdobeVFPrototype.ttf", 36)
     _check_text(font, "Tests/images/variation_adobe.png", 11)
-    for name in ["Bold", b"Bold"]:
+    for name in ("Bold", b"Bold"):
         font.set_variation_by_name(name)
         assert font.getname()[1] == "Bold"
     _check_text(font, "Tests/images/variation_adobe_name.png", 16)
 
     font = ImageFont.truetype("Tests/fonts/TINY5x3GX.ttf", 36)
     _check_text(font, "Tests/images/variation_tiny.png", 40)
-    for name in ["200", b"200"]:
+    for name in ("200", b"200"):
         font.set_variation_by_name(name)
         assert font.getname()[1] == "200"
     _check_text(font, "Tests/images/variation_tiny_name.png", 40)
 
 
-def test_variation_set_by_axes(font):
-    freetype = parse_version(features.version_module("freetype2"))
+def test_variation_set_by_axes(font: ImageFont.FreeTypeFont) -> None:
+    version = features.version_module("freetype2")
+    assert version is not None
+    freetype = parse_version(version)
     if freetype < parse_version("2.9.1"):
         with pytest.raises(NotImplementedError):
             font.set_variation_by_axes([100])
@@ -720,14 +778,6 @@ def test_variation_set_by_axes(font):
     _check_text(font, "Tests/images/variation_tiny_axes.png", 32.5)
 
 
-def test_textbbox_non_freetypefont():
-    im = Image.new("RGB", (200, 200))
-    d = ImageDraw.Draw(im)
-    default_font = ImageFont.load_default()
-    assert d.textlength("test", font=default_font) == 24
-    assert d.textbbox((0, 0), "test", font=default_font) == (0, 0, 24, 11)
-
-
 @pytest.mark.parametrize(
     "anchor, left, top",
     (
@@ -744,7 +794,9 @@ def test_textbbox_non_freetypefont():
     ),
     ids=("ls", "ms", "rs", "ma", "mt", "mm", "mb", "md"),
 )
-def test_anchor(layout_engine, anchor, left, top):
+def test_anchor(
+    layout_engine: ImageFont.Layout, anchor: str, left: int, top: int
+) -> None:
     name, text = "quick", "Quick"
     path = f"Tests/images/test_anchor_{name}_{anchor}.png"
 
@@ -789,7 +841,9 @@ def test_anchor(layout_engine, anchor, left, top):
         ("md", "center"),
     ),
 )
-def test_anchor_multiline(layout_engine, anchor, align):
+def test_anchor_multiline(
+    layout_engine: ImageFont.Layout, anchor: str, align: str
+) -> None:
     target = f"Tests/images/test_anchor_multiline_{anchor}_{align}.png"
     text = "a\nlong\ntext sample"
 
@@ -807,7 +861,7 @@ def test_anchor_multiline(layout_engine, anchor, align):
     assert_image_similar_tofile(im, target, 4)
 
 
-def test_anchor_invalid(font):
+def test_anchor_invalid(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new("RGB", (100, 100), "white")
     d = ImageDraw.Draw(im)
     d.font = font
@@ -833,7 +887,7 @@ def test_anchor_invalid(font):
 
 
 @pytest.mark.parametrize("bpp", (1, 2, 4, 8))
-def test_bitmap_font(layout_engine, bpp):
+def test_bitmap_font(layout_engine: ImageFont.Layout, bpp: int) -> None:
     text = "Bitmap Font"
     layout_name = ["basic", "raqm"][layout_engine]
     target = f"Tests/images/bitmap_font_{bpp}_{layout_name}.png"
@@ -850,7 +904,7 @@ def test_bitmap_font(layout_engine, bpp):
     assert_image_equal_tofile(im, target)
 
 
-def test_bitmap_font_stroke(layout_engine):
+def test_bitmap_font_stroke(layout_engine: ImageFont.Layout) -> None:
     text = "Bitmap Font"
     layout_name = ["basic", "raqm"][layout_engine]
     target = f"Tests/images/bitmap_font_stroke_{layout_name}.png"
@@ -867,7 +921,20 @@ def test_bitmap_font_stroke(layout_engine):
     assert_image_similar_tofile(im, target, 0.03)
 
 
-def test_standard_embedded_color(layout_engine):
+@pytest.mark.parametrize("embedded_color", (False, True))
+def test_bitmap_blend(layout_engine: ImageFont.Layout, embedded_color: bool) -> None:
+    font = ImageFont.truetype(
+        "Tests/fonts/EBDTTestFont.ttf", size=64, layout_engine=layout_engine
+    )
+
+    im = Image.new("RGBA", (128, 96), "white")
+    d = ImageDraw.Draw(im)
+    d.text((16, 16), "AA", font=font, fill="#8E2F52", embedded_color=embedded_color)
+
+    assert_image_equal_tofile(im, "Tests/images/bitmap_font_blend.png")
+
+
+def test_standard_embedded_color(layout_engine: ImageFont.Layout) -> None:
     txt = "Hello World!"
     ttf = ImageFont.truetype(FONT_PATH, 40, layout_engine=layout_engine)
     ttf.getbbox(txt)
@@ -880,7 +947,7 @@ def test_standard_embedded_color(layout_engine):
 
 
 @pytest.mark.parametrize("fontmode", ("1", "L", "RGBA"))
-def test_float_coord(layout_engine, fontmode):
+def test_float_coord(layout_engine: ImageFont.Layout, fontmode: str) -> None:
     txt = "Hello World!"
     ttf = ImageFont.truetype(FONT_PATH, 40, layout_engine=layout_engine)
 
@@ -902,43 +969,41 @@ def test_float_coord(layout_engine, fontmode):
             raise
 
 
-def test_cbdt(layout_engine):
+def test_cbdt(layout_engine: ImageFont.Layout) -> None:
     try:
         font = ImageFont.truetype(
-            "Tests/fonts/NotoColorEmoji.ttf", size=109, layout_engine=layout_engine
+            "Tests/fonts/CBDTTestFont.ttf", size=64, layout_engine=layout_engine
         )
 
-        im = Image.new("RGB", (150, 150), "white")
+        im = Image.new("RGB", (128, 96), "white")
         d = ImageDraw.Draw(im)
 
-        d.text((10, 10), "\U0001f469", font=font, embedded_color=True)
+        d.text((16, 16), "AB", font=font, embedded_color=True)
 
-        assert_image_similar_tofile(im, "Tests/images/cbdt_notocoloremoji.png", 6.2)
+        assert_image_equal_tofile(im, "Tests/images/cbdt.png")
     except OSError as e:  # pragma: no cover
         assert str(e) in ("unimplemented feature", "unknown file format")
         pytest.skip("freetype compiled without libpng or CBDT support")
 
 
-def test_cbdt_mask(layout_engine):
+def test_cbdt_mask(layout_engine: ImageFont.Layout) -> None:
     try:
         font = ImageFont.truetype(
-            "Tests/fonts/NotoColorEmoji.ttf", size=109, layout_engine=layout_engine
+            "Tests/fonts/CBDTTestFont.ttf", size=64, layout_engine=layout_engine
         )
 
-        im = Image.new("RGB", (150, 150), "white")
+        im = Image.new("RGB", (128, 96), "white")
         d = ImageDraw.Draw(im)
 
-        d.text((10, 10), "\U0001f469", "black", font=font)
+        d.text((16, 16), "AB", "green", font=font)
 
-        assert_image_similar_tofile(
-            im, "Tests/images/cbdt_notocoloremoji_mask.png", 6.2
-        )
+        assert_image_equal_tofile(im, "Tests/images/cbdt_mask.png")
     except OSError as e:  # pragma: no cover
         assert str(e) in ("unimplemented feature", "unknown file format")
         pytest.skip("freetype compiled without libpng or CBDT support")
 
 
-def test_sbix(layout_engine):
+def test_sbix(layout_engine: ImageFont.Layout) -> None:
     try:
         font = ImageFont.truetype(
             "Tests/fonts/chromacheck-sbix.woff", size=300, layout_engine=layout_engine
@@ -955,7 +1020,7 @@ def test_sbix(layout_engine):
         pytest.skip("freetype compiled without libpng or SBIX support")
 
 
-def test_sbix_mask(layout_engine):
+def test_sbix_mask(layout_engine: ImageFont.Layout) -> None:
     try:
         font = ImageFont.truetype(
             "Tests/fonts/chromacheck-sbix.woff", size=300, layout_engine=layout_engine
@@ -973,7 +1038,7 @@ def test_sbix_mask(layout_engine):
 
 
 @skip_unless_feature_version("freetype2", "2.10.0")
-def test_colr(layout_engine):
+def test_colr(layout_engine: ImageFont.Layout) -> None:
     font = ImageFont.truetype(
         "Tests/fonts/BungeeColor-Regular_colr_Windows.ttf",
         size=64,
@@ -989,7 +1054,7 @@ def test_colr(layout_engine):
 
 
 @skip_unless_feature_version("freetype2", "2.10.0")
-def test_colr_mask(layout_engine):
+def test_colr_mask(layout_engine: ImageFont.Layout) -> None:
     font = ImageFont.truetype(
         "Tests/fonts/BungeeColor-Regular_colr_Windows.ttf",
         size=64,
@@ -1004,7 +1069,7 @@ def test_colr_mask(layout_engine):
     assert_image_similar_tofile(im, "Tests/images/colr_bungee_mask.png", 22)
 
 
-def test_woff2(layout_engine):
+def test_woff2(layout_engine: ImageFont.Layout) -> None:
     try:
         font = ImageFont.truetype(
             "Tests/fonts/OpenSans.woff2",
@@ -1023,7 +1088,7 @@ def test_woff2(layout_engine):
     assert_image_similar_tofile(im, "Tests/images/test_woff2.png", 5)
 
 
-def test_render_mono_size():
+def test_render_mono_size() -> None:
     # issue 4177
 
     im = Image.new("P", (100, 30), "white")
@@ -1038,6 +1103,47 @@ def test_render_mono_size():
     assert_image_equal_tofile(im, "Tests/images/text_mono.gif")
 
 
+def test_too_many_characters(font: ImageFont.FreeTypeFont) -> None:
+    with pytest.raises(ValueError):
+        font.getlength("A" * 1_000_001)
+    with pytest.raises(ValueError):
+        font.getbbox("A" * 1_000_001)
+    with pytest.raises(ValueError):
+        font.getmask2("A" * 1_000_001)
+
+    transposed_font = ImageFont.TransposedFont(font)
+    with pytest.raises(ValueError):
+        transposed_font.getlength("A" * 1_000_001)
+
+    imagefont = ImageFont.ImageFont()
+    with pytest.raises(ValueError):
+        imagefont.getlength("A" * 1_000_001)
+    with pytest.raises(ValueError):
+        imagefont.getbbox("A" * 1_000_001)
+    with pytest.raises(ValueError):
+        imagefont.getmask("A" * 1_000_001)
+
+
+def test_bytes(font: ImageFont.FreeTypeFont) -> None:
+    assert font.getlength(b"test") == font.getlength("test")
+
+    assert font.getbbox(b"test") == font.getbbox("test")
+
+    assert_image_equal(
+        Image.Image()._new(font.getmask(b"test")),
+        Image.Image()._new(font.getmask("test")),
+    )
+
+    assert_image_equal(
+        Image.Image()._new(font.getmask2(b"test")[0]),
+        Image.Image()._new(font.getmask2("test")[0]),
+    )
+    assert font.getmask2(b"test")[1] == font.getmask2("test")[1]
+
+    with pytest.raises(TypeError):
+        font.getlength((0, 0))  # type: ignore[arg-type]
+
+
 @pytest.mark.parametrize(
     "test_file",
     [
@@ -1045,14 +1151,14 @@ def test_render_mono_size():
         "Tests/fonts/oom-4da0210eb7081b0bf15bf16cc4c52ce02c1e1bbc.ttf",
     ],
 )
-def test_oom(test_file):
+def test_oom(test_file: str) -> None:
     with open(test_file, "rb") as f:
         font = ImageFont.truetype(BytesIO(f.read()))
         with pytest.raises(Image.DecompressionBombError):
             font.getmask("Test Text")
 
 
-def test_raqm_missing_warning(monkeypatch):
+def test_raqm_missing_warning(monkeypatch: pytest.MonkeyPatch) -> None:
     monkeypatch.setattr(ImageFont.core, "HAVE_RAQM", False)
     with pytest.warns(UserWarning) as record:
         font = ImageFont.truetype(
@@ -1063,3 +1169,23 @@ def test_raqm_missing_warning(monkeypatch):
         "Raqm layout was requested, but Raqm is not available. "
         "Falling back to basic layout."
     )
+
+
+@pytest.mark.parametrize("size", [-1, 0])
+def test_invalid_truetype_sizes_raise_valueerror(
+    layout_engine: ImageFont.Layout, size: int
+) -> None:
+    with pytest.raises(ValueError):
+        ImageFont.truetype(FONT_PATH, size, layout_engine=layout_engine)
+
+
+def test_freetype_deprecation(monkeypatch: pytest.MonkeyPatch) -> None:
+    # Arrange: mock features.version_module to return fake FreeType version
+    def fake_version_module(module: str) -> str:
+        return "2.9.0"
+
+    monkeypatch.setattr(features, "version_module", fake_version_module)
+
+    # Act / Assert
+    with pytest.warns(DeprecationWarning):
+        ImageFont.truetype(FONT_PATH, FONT_SIZE)
diff --git a/Tests/test_imagefontctl.py b/Tests/test_imagefontctl.py
index 6099b04e4..24c7b871a 100644
--- a/Tests/test_imagefontctl.py
+++ b/Tests/test_imagefontctl.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, ImageDraw, ImageFont
@@ -10,7 +12,7 @@ FONT_PATH = "Tests/fonts/DejaVuSans/DejaVuSans.ttf"
 pytestmark = skip_unless_feature("raqm")
 
 
-def test_english():
+def test_english() -> None:
     # smoke test, this should not fail
     ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
     im = Image.new(mode="RGB", size=(300, 100))
@@ -18,7 +20,7 @@ def test_english():
     draw.text((0, 0), "TEST", font=ttf, fill=500, direction="ltr")
 
 
-def test_complex_text():
+def test_complex_text() -> None:
     ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
 
     im = Image.new(mode="RGB", size=(300, 100))
@@ -29,7 +31,7 @@ def test_complex_text():
     assert_image_similar_tofile(im, target, 0.5)
 
 
-def test_y_offset():
+def test_y_offset() -> None:
     ttf = ImageFont.truetype("Tests/fonts/NotoNastaliqUrdu-Regular.ttf", FONT_SIZE)
 
     im = Image.new(mode="RGB", size=(300, 100))
@@ -40,7 +42,7 @@ def test_y_offset():
     assert_image_similar_tofile(im, target, 1.7)
 
 
-def test_complex_unicode_text():
+def test_complex_unicode_text() -> None:
     ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
 
     im = Image.new(mode="RGB", size=(300, 100))
@@ -60,7 +62,7 @@ def test_complex_unicode_text():
     assert_image_similar_tofile(im, target, 2.33)
 
 
-def test_text_direction_rtl():
+def test_text_direction_rtl() -> None:
     ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
 
     im = Image.new(mode="RGB", size=(300, 100))
@@ -71,7 +73,7 @@ def test_text_direction_rtl():
     assert_image_similar_tofile(im, target, 0.5)
 
 
-def test_text_direction_ltr():
+def test_text_direction_ltr() -> None:
     ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
 
     im = Image.new(mode="RGB", size=(300, 100))
@@ -82,7 +84,7 @@ def test_text_direction_ltr():
     assert_image_similar_tofile(im, target, 0.5)
 
 
-def test_text_direction_rtl2():
+def test_text_direction_rtl2() -> None:
     ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
 
     im = Image.new(mode="RGB", size=(300, 100))
@@ -93,7 +95,7 @@ def test_text_direction_rtl2():
     assert_image_similar_tofile(im, target, 0.5)
 
 
-def test_text_direction_ttb():
+def test_text_direction_ttb() -> None:
     ttf = ImageFont.truetype("Tests/fonts/NotoSansJP-Regular.otf", FONT_SIZE)
 
     im = Image.new(mode="RGB", size=(100, 300))
@@ -108,7 +110,7 @@ def test_text_direction_ttb():
     assert_image_similar_tofile(im, target, 2.8)
 
 
-def test_text_direction_ttb_stroke():
+def test_text_direction_ttb_stroke() -> None:
     ttf = ImageFont.truetype("Tests/fonts/NotoSansJP-Regular.otf", 50)
 
     im = Image.new(mode="RGB", size=(100, 300))
@@ -131,7 +133,7 @@ def test_text_direction_ttb_stroke():
     assert_image_similar_tofile(im, target, 19.4)
 
 
-def test_ligature_features():
+def test_ligature_features() -> None:
     ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
 
     im = Image.new(mode="RGB", size=(300, 100))
@@ -144,7 +146,7 @@ def test_ligature_features():
     assert liga_bbox == (0, 4, 13, 19)
 
 
-def test_kerning_features():
+def test_kerning_features() -> None:
     ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
 
     im = Image.new(mode="RGB", size=(300, 100))
@@ -155,7 +157,7 @@ def test_kerning_features():
     assert_image_similar_tofile(im, target, 0.5)
 
 
-def test_arabictext_features():
+def test_arabictext_features() -> None:
     ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
 
     im = Image.new(mode="RGB", size=(300, 100))
@@ -172,7 +174,7 @@ def test_arabictext_features():
     assert_image_similar_tofile(im, target, 0.5)
 
 
-def test_x_max_and_y_offset():
+def test_x_max_and_y_offset() -> None:
     ttf = ImageFont.truetype("Tests/fonts/ArefRuqaa-Regular.ttf", 40)
 
     im = Image.new(mode="RGB", size=(50, 100))
@@ -183,7 +185,7 @@ def test_x_max_and_y_offset():
     assert_image_similar_tofile(im, target, 0.5)
 
 
-def test_language():
+def test_language() -> None:
     ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
 
     im = Image.new(mode="RGB", size=(300, 100))
@@ -206,7 +208,9 @@ def test_language():
     ),
     ids=("None", "ltr", "rtl2", "rtl", "ttb"),
 )
-def test_getlength(mode, text, direction, expected):
+def test_getlength(
+    mode: str, text: str, direction: str | None, expected: float
+) -> None:
     ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
     im = Image.new(mode, (1, 1), 0)
     d = ImageDraw.Draw(im)
@@ -228,7 +232,7 @@ def test_getlength(mode, text, direction, expected):
     ("i" + ("\u030C" * 15) + "i", "i" + "\u032C" * 15 + "i", "\u035Cii", "i\u0305i"),
     ids=("caron-above", "caron-below", "double-breve", "overline"),
 )
-def test_getlength_combine(mode, direction, text):
+def test_getlength_combine(mode: str, direction: str, text: str) -> None:
     if text == "i\u0305i" and direction == "ttb":
         pytest.skip("fails with this font")
 
@@ -248,7 +252,7 @@ def test_getlength_combine(mode, direction, text):
 
 
 @pytest.mark.parametrize("anchor", ("lt", "mm", "rb", "sm"))
-def test_anchor_ttb(anchor):
+def test_anchor_ttb(anchor: str) -> None:
     text = "f"
     path = f"Tests/images/test_anchor_ttb_{text}_{anchor}.png"
     f = ImageFont.truetype("Tests/fonts/NotoSans-Regular.ttf", 120)
@@ -304,7 +308,9 @@ combine_tests = (
 @pytest.mark.parametrize(
     "name, text, anchor, dir, epsilon", combine_tests, ids=[r[0] for r in combine_tests]
 )
-def test_combine(name, text, dir, anchor, epsilon):
+def test_combine(
+    name: str, text: str, dir: str | None, anchor: str | None, epsilon: float
+) -> None:
     path = f"Tests/images/test_combine_{name}.png"
     f = ImageFont.truetype("Tests/fonts/NotoSans-Regular.ttf", 48)
 
@@ -335,7 +341,7 @@ def test_combine(name, text, dir, anchor, epsilon):
         ("rm", "right"),  # pass with getsize
     ),
 )
-def test_combine_multiline(anchor, align):
+def test_combine_multiline(anchor: str, align: str) -> None:
     # test that multiline text uses getlength, not getsize or getbbox
 
     path = f"Tests/images/test_combine_multiline_{anchor}_{align}.png"
@@ -353,7 +359,7 @@ def test_combine_multiline(anchor, align):
     assert_image_similar_tofile(im, path, 0.015)
 
 
-def test_anchor_invalid_ttb():
+def test_anchor_invalid_ttb() -> None:
     font = ImageFont.truetype(FONT_PATH, FONT_SIZE)
     im = Image.new("RGB", (100, 100), "white")
     d = ImageDraw.Draw(im)
diff --git a/Tests/test_imagefontpil.py b/Tests/test_imagefontpil.py
new file mode 100644
index 000000000..695aecbde
--- /dev/null
+++ b/Tests/test_imagefontpil.py
@@ -0,0 +1,84 @@
+from __future__ import annotations
+
+import struct
+from io import BytesIO
+
+import pytest
+
+from PIL import Image, ImageDraw, ImageFont, _util, features
+
+from .helper import assert_image_equal_tofile
+
+fonts = [ImageFont.load_default_imagefont()]
+if not features.check_module("freetype2"):
+    default_font = ImageFont.load_default()
+    if isinstance(default_font, ImageFont.ImageFont):
+        fonts.append(default_font)
+
+
+@pytest.mark.parametrize("font", fonts)
+def test_default_font(font: ImageFont.ImageFont) -> None:
+    # Arrange
+    txt = 'This is a "better than nothing" default font.'
+    im = Image.new(mode="RGB", size=(300, 100))
+    draw = ImageDraw.Draw(im)
+
+    # Act
+    draw.text((10, 10), txt, font=font)
+
+    # Assert
+    assert_image_equal_tofile(im, "Tests/images/default_font.png")
+
+
+def test_without_freetype() -> None:
+    original_core = ImageFont.core
+    if features.check_module("freetype2"):
+        ImageFont.core = _util.DeferredError(ImportError("Disabled for testing"))
+    try:
+        with pytest.raises(ImportError):
+            ImageFont.truetype("Tests/fonts/FreeMono.ttf")
+
+        assert isinstance(ImageFont.load_default(), ImageFont.ImageFont)
+
+        with pytest.raises(ImportError):
+            ImageFont.load_default(size=14)
+    finally:
+        ImageFont.core = original_core
+
+
+@pytest.mark.parametrize("font", fonts)
+def test_unicode(font: ImageFont.ImageFont) -> None:
+    # should not segfault, should return UnicodeDecodeError
+    # issue #2826
+    with pytest.raises(UnicodeEncodeError):
+        font.getbbox("’")
+
+
+@pytest.mark.parametrize("font", fonts)
+def test_textbbox(font: ImageFont.ImageFont) -> None:
+    im = Image.new("RGB", (200, 200))
+    d = ImageDraw.Draw(im)
+    assert d.textlength("test", font=font) == 24
+    assert d.textbbox((0, 0), "test", font=font) == (0, 0, 24, 11)
+
+
+def test_decompression_bomb() -> None:
+    glyph = struct.pack(">hhhhhhhhhh", 1, 0, 0, 0, 256, 256, 0, 0, 256, 256)
+    fp = BytesIO(b"PILfont\n\nDATA\n" + glyph * 256)
+
+    font = ImageFont.ImageFont()
+    font._load_pilfont_data(fp, Image.new("L", (256, 256)))
+    with pytest.raises(Image.DecompressionBombError):
+        font.getmask("A" * 1_000_000)
+
+
+@pytest.mark.timeout(4)
+def test_oom() -> None:
+    glyph = struct.pack(
+        ">hhhhhhhhhh", 1, 0, -32767, -32767, 32767, 32767, -32767, -32767, 32767, 32767
+    )
+    fp = BytesIO(b"PILfont\n\nDATA\n" + glyph * 256)
+
+    font = ImageFont.ImageFont()
+    font._load_pilfont_data(fp, Image.new("L", (1, 1)))
+    font.getmask("A" * 1_000_000)
diff --git a/Tests/test_imagegrab.py b/Tests/test_imagegrab.py
index f8059eca4..5cd510751 100644
--- a/Tests/test_imagegrab.py
+++ b/Tests/test_imagegrab.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import os
 import shutil
 import subprocess
@@ -11,10 +13,14 @@ from .helper import assert_image_equal_tofile, skip_unless_feature
 
 
 class TestImageGrab:
+    @pytest.mark.skipif(
+        os.environ.get("USERNAME") == "ContainerAdministrator",
+        reason="can't grab screen when running in Docker",
+    )
     @pytest.mark.skipif(
         sys.platform not in ("win32", "darwin"), reason="requires Windows or macOS"
     )
-    def test_grab(self):
+    def test_grab(self) -> None:
         ImageGrab.grab()
         ImageGrab.grab(include_layered_windows=True)
         ImageGrab.grab(all_screens=True)
@@ -23,7 +29,7 @@ class TestImageGrab:
         assert im.size == (40, 60)
 
     @skip_unless_feature("xcb")
-    def test_grab_x11(self):
+    def test_grab_x11(self) -> None:
         try:
             if sys.platform not in ("win32", "darwin"):
                 ImageGrab.grab()
@@ -33,7 +39,7 @@ class TestImageGrab:
             pytest.skip(str(e))
 
     @pytest.mark.skipif(Image.core.HAVE_XCB, reason="tests missing XCB")
-    def test_grab_no_xcb(self):
+    def test_grab_no_xcb(self) -> None:
         if sys.platform not in ("win32", "darwin") and not shutil.which(
             "gnome-screenshot"
         ):
@@ -46,14 +52,16 @@ class TestImageGrab:
         assert str(e.value).startswith("Pillow was built without XCB support")
 
     @skip_unless_feature("xcb")
-    def test_grab_invalid_xdisplay(self):
+    def test_grab_invalid_xdisplay(self) -> None:
         with pytest.raises(OSError) as e:
             ImageGrab.grab(xdisplay="error.test:0.0")
         assert str(e.value).startswith("X connection failed")
 
-    def test_grabclipboard(self):
+    def test_grabclipboard(self) -> None:
         if sys.platform == "darwin":
             subprocess.call(["screencapture", "-cx"])
+
+            ImageGrab.grabclipboard()
         elif sys.platform == "win32":
             p = subprocess.Popen(["powershell", "-command", "-"], stdin=subprocess.PIPE)
             p.stdin.write(
@@ -63,6 +71,8 @@ $bmp = New-Object Drawing.Bitmap 200, 200
 [Windows.Forms.Clipboard]::SetImage($bmp)"""
             )
             p.communicate()
+
+            ImageGrab.grabclipboard()
         else:
             if not shutil.which("wl-paste") and not shutil.which("xclip"):
                 with pytest.raises(
@@ -71,23 +81,23 @@ $bmp = New-Object Drawing.Bitmap 200, 200
                     r" ImageGrab.grabclipboard\(\) on Linux",
                 ):
                     ImageGrab.grabclipboard()
-            return
-
-        ImageGrab.grabclipboard()
 
     @pytest.mark.skipif(sys.platform != "win32", reason="Windows only")
-    def test_grabclipboard_file(self):
+    def test_grabclipboard_file(self) -> None:
         p = subprocess.Popen(["powershell", "-command", "-"], stdin=subprocess.PIPE)
+        assert p.stdin is not None
         p.stdin.write(rb'Set-Clipboard -Path "Tests\images\hopper.gif"')
         p.communicate()
 
         im = ImageGrab.grabclipboard()
+        assert isinstance(im, list)
         assert len(im) == 1
         assert os.path.samefile(im[0], "Tests/images/hopper.gif")
 
     @pytest.mark.skipif(sys.platform != "win32", reason="Windows only")
-    def test_grabclipboard_png(self):
+    def test_grabclipboard_png(self) -> None:
         p = subprocess.Popen(["powershell", "-command", "-"], stdin=subprocess.PIPE)
+        assert p.stdin is not None
         p.stdin.write(
             rb"""$bytes = [System.IO.File]::ReadAllBytes("Tests\images\hopper.png")
 $ms = new-object System.IO.MemoryStream(, $bytes)
@@ -97,6 +107,7 @@ $ms = new-object System.IO.MemoryStream(, $bytes)
         p.communicate()
 
         im = ImageGrab.grabclipboard()
+        assert isinstance(im, Image.Image)
         assert_image_equal_tofile(im, "Tests/images/hopper.png")
 
     @pytest.mark.skipif(
@@ -107,9 +118,22 @@ $ms = new-object System.IO.MemoryStream(, $bytes)
         reason="Linux with wl-clipboard only",
     )
     @pytest.mark.parametrize("ext", ("gif", "png", "ico"))
-    def test_grabclipboard_wl_clipboard(self, ext):
+    def test_grabclipboard_wl_clipboard(self, ext: str) -> None:
         image_path = "Tests/images/hopper." + ext
         with open(image_path, "rb") as fp:
             subprocess.call(["wl-copy"], stdin=fp)
         im = ImageGrab.grabclipboard()
+        assert isinstance(im, Image.Image)
         assert_image_equal_tofile(im, image_path)
+
+    @pytest.mark.skipif(
+        (
+            sys.platform != "linux"
+            or not all(shutil.which(cmd) for cmd in ("wl-paste", "wl-copy"))
+        ),
+        reason="Linux with wl-clipboard only",
+    )
+    @pytest.mark.parametrize("arg", ("text", "--clear"))
+    def test_grabclipboard_wl_clipboard_errors(self, arg: str) -> None:
+        subprocess.call(["wl-copy", arg])
+        assert ImageGrab.grabclipboard() is None
diff --git a/Tests/test_imagemath.py b/Tests/test_imagemath.py
deleted file mode 100644
index fe7ac9a7a..000000000
--- a/Tests/test_imagemath.py
+++ /dev/null
@@ -1,202 +0,0 @@
-import pytest
-
-from PIL import Image, ImageMath
-
-
-def pixel(im):
-    if hasattr(im, "im"):
-        return f"{im.mode} {repr(im.getpixel((0, 0)))}"
-    if isinstance(im, int):
-        return int(im)  # hack to deal with booleans
-
-
-A = Image.new("L", (1, 1), 1)
-B = Image.new("L", (1, 1), 2)
-Z = Image.new("L", (1, 1), 0)  # Z for zero
-F = Image.new("F", (1, 1), 3)
-I = Image.new("I", (1, 1), 4)  # noqa: E741
-
-A2 = A.resize((2, 2))
-B2 = B.resize((2, 2))
-
-images = {"A": A, "B": B, "F": F, "I": I}
-
-
-def test_sanity():
-    assert ImageMath.eval("1") == 1
-    assert ImageMath.eval("1+A", A=2) == 3
-    assert pixel(ImageMath.eval("A+B", A=A, B=B)) == "I 3"
-    assert pixel(ImageMath.eval("A+B", images)) == "I 3"
-    assert pixel(ImageMath.eval("float(A)+B", images)) == "F 3.0"
-    assert pixel(ImageMath.eval("int(float(A)+B)", images)) == "I 3"
-
-
-def test_ops():
-    assert pixel(ImageMath.eval("-A", images)) == "I -1"
-    assert pixel(ImageMath.eval("+B", images)) == "L 2"
-
-    assert pixel(ImageMath.eval("A+B", images)) == "I 3"
-    assert pixel(ImageMath.eval("A-B", images)) == "I -1"
-    assert pixel(ImageMath.eval("A*B", images)) == "I 2"
-    assert pixel(ImageMath.eval("A/B", images)) == "I 0"
-    assert pixel(ImageMath.eval("B**2", images)) == "I 4"
-    assert pixel(ImageMath.eval("B**33", images)) == "I 2147483647"
-
-    assert pixel(ImageMath.eval("float(A)+B", images)) == "F 3.0"
-    assert pixel(ImageMath.eval("float(A)-B", images)) == "F -1.0"
-    assert pixel(ImageMath.eval("float(A)*B", images)) == "F 2.0"
-    assert pixel(ImageMath.eval("float(A)/B", images)) == "F 0.5"
-    assert pixel(ImageMath.eval("float(B)**2", images)) == "F 4.0"
-    assert pixel(ImageMath.eval("float(B)**33", images)) == "F 8589934592.0"
-
-
-@pytest.mark.parametrize(
-    "expression",
-    (
-        "exec('pass')",
-        "(lambda: exec('pass'))()",
-        "(lambda: (lambda: exec('pass'))())()",
-    ),
-)
-def test_prevent_exec(expression):
-    with pytest.raises(ValueError):
-        ImageMath.eval(expression)
-
-
-def test_logical():
-    assert pixel(ImageMath.eval("not A", images)) == 0
-    assert pixel(ImageMath.eval("A and B", images)) == "L 2"
-    assert pixel(ImageMath.eval("A or B", images)) == "L 1"
-
-
-def test_convert():
-    assert pixel(ImageMath.eval("convert(A+B, 'L')", images)) == "L 3"
-    assert pixel(ImageMath.eval("convert(A+B, '1')", images)) == "1 0"
-    assert pixel(ImageMath.eval("convert(A+B, 'RGB')", images)) == "RGB (3, 3, 3)"
-
-
-def test_compare():
-    assert pixel(ImageMath.eval("min(A, B)", images)) == "I 1"
-    assert pixel(ImageMath.eval("max(A, B)", images)) == "I 2"
-    assert pixel(ImageMath.eval("A == 1", images)) == "I 1"
-    assert pixel(ImageMath.eval("A == 2", images)) == "I 0"
-
-
-def test_one_image_larger():
-    assert pixel(ImageMath.eval("A+B", A=A2, B=B)) == "I 3"
-    assert pixel(ImageMath.eval("A+B", A=A, B=B2)) == "I 3"
-
-
-def test_abs():
-    assert pixel(ImageMath.eval("abs(A)", A=A)) == "I 1"
-    assert pixel(ImageMath.eval("abs(B)", B=B)) == "I 2"
-
-
-def test_binary_mod():
-    assert pixel(ImageMath.eval("A%A", A=A)) == "I 0"
-    assert pixel(ImageMath.eval("B%B", B=B)) == "I 0"
-    assert pixel(ImageMath.eval("A%B", A=A, B=B)) == "I 1"
-    assert pixel(ImageMath.eval("B%A", A=A, B=B)) == "I 0"
-    assert pixel(ImageMath.eval("Z%A", A=A, Z=Z)) == "I 0"
-    assert pixel(ImageMath.eval("Z%B", B=B, Z=Z)) == "I 0"
-
-
-def test_bitwise_invert():
-    assert pixel(ImageMath.eval("~Z", Z=Z)) == "I -1"
-    assert pixel(ImageMath.eval("~A", A=A)) == "I -2"
-    assert pixel(ImageMath.eval("~B", B=B)) == "I -3"
-
-
-def test_bitwise_and():
-    assert pixel(ImageMath.eval("Z&Z", A=A, Z=Z)) == "I 0"
-    assert pixel(ImageMath.eval("Z&A", A=A, Z=Z)) == "I 0"
-    assert pixel(ImageMath.eval("A&Z", A=A, Z=Z)) == "I 0"
-    assert pixel(ImageMath.eval("A&A", A=A, Z=Z)) == "I 1"
-
-
-def test_bitwise_or():
-    assert pixel(ImageMath.eval("Z|Z", A=A, Z=Z)) == "I 0"
-    assert pixel(ImageMath.eval("Z|A", A=A, Z=Z)) == "I 1"
-    assert pixel(ImageMath.eval("A|Z", A=A, Z=Z)) == "I 1"
-    assert pixel(ImageMath.eval("A|A", A=A, Z=Z)) == "I 1"
-
-
-def test_bitwise_xor():
-    assert pixel(ImageMath.eval("Z^Z", A=A, Z=Z)) == "I 0"
-    assert pixel(ImageMath.eval("Z^A", A=A, Z=Z)) == "I 1"
-    assert pixel(ImageMath.eval("A^Z", A=A, Z=Z)) == "I 1"
-    assert pixel(ImageMath.eval("A^A", A=A, Z=Z)) == "I 0"
-
-
-def test_bitwise_leftshift():
-    assert pixel(ImageMath.eval("Z<<0", Z=Z)) == "I 0"
-    assert pixel(ImageMath.eval("Z<<1", Z=Z)) == "I 0"
-    assert pixel(ImageMath.eval("A<<0", A=A)) == "I 1"
-    assert pixel(ImageMath.eval("A<<1", A=A)) == "I 2"
-
-
-def test_bitwise_rightshift():
-    assert pixel(ImageMath.eval("Z>>0", Z=Z)) == "I 0"
-    assert pixel(ImageMath.eval("Z>>1", Z=Z)) == "I 0"
-    assert pixel(ImageMath.eval("A>>0", A=A)) == "I 1"
-    assert pixel(ImageMath.eval("A>>1", A=A)) == "I 0"
-
-
-def test_logical_eq():
-    assert pixel(ImageMath.eval("A==A", A=A)) == "I 1"
-    assert pixel(ImageMath.eval("B==B", B=B)) == "I 1"
-    assert pixel(ImageMath.eval("A==B", A=A, B=B)) == "I 0"
-    assert pixel(ImageMath.eval("B==A", A=A, B=B)) == "I 0"
-
-
-def test_logical_ne():
-    assert pixel(ImageMath.eval("A!=A", A=A)) == "I 0"
-    assert pixel(ImageMath.eval("B!=B", B=B)) == "I 0"
-    assert pixel(ImageMath.eval("A!=B", A=A, B=B)) == "I 1"
-    assert pixel(ImageMath.eval("B!=A", A=A, B=B)) == "I 1"
-
-
-def test_logical_lt():
-    assert pixel(ImageMath.eval("A<A", A=A)) == "I 0"
-    assert pixel(ImageMath.eval("B<B", B=B)) == "I 0"
-    assert pixel(ImageMath.eval("A<B", A=A, B=B)) == "I 1"
-    assert pixel(ImageMath.eval("B<A", A=A, B=B)) == "I 0"
-
-
-def test_logical_le():
-    assert pixel(ImageMath.eval("A<=A", A=A)) == "I 1"
-    assert pixel(ImageMath.eval("B<=B", B=B)) == "I 1"
-    assert pixel(ImageMath.eval("A<=B", A=A, B=B)) == "I 1"
-    assert pixel(ImageMath.eval("B<=A", A=A, B=B)) == "I 0"
-
-
-def test_logical_gt():
-    assert pixel(ImageMath.eval("A>A", A=A)) == "I 0"
-    assert pixel(ImageMath.eval("B>B", B=B)) == "I 0"
-    assert pixel(ImageMath.eval("A>B", A=A, B=B)) == "I 0"
-    assert pixel(ImageMath.eval("B>A", A=A, B=B)) == "I 1"
-
-
-def test_logical_ge():
-    assert pixel(ImageMath.eval("A>=A", A=A)) == "I 1"
-    assert pixel(ImageMath.eval("B>=B", B=B)) == "I 1"
-    assert pixel(ImageMath.eval("A>=B", A=A, B=B)) == "I 0"
-    assert pixel(ImageMath.eval("B>=A", A=A, B=B)) == "I 1"
-
-
-def test_logical_equal():
-    assert pixel(ImageMath.eval("equal(A, A)", A=A)) == "I 1"
-    assert pixel(ImageMath.eval("equal(B, B)", B=B)) == "I 1"
-    assert pixel(ImageMath.eval("equal(Z, Z)", Z=Z)) == "I 1"
-    assert pixel(ImageMath.eval("equal(A, B)", A=A, B=B)) == "I 0"
-    assert pixel(ImageMath.eval("equal(B, A)", A=A, B=B)) == "I 0"
-    assert pixel(ImageMath.eval("equal(A, Z)", A=A, Z=Z)) == "I 0"
-
-
-def test_logical_not_equal():
-    assert pixel(ImageMath.eval("notequal(A, A)", A=A)) == "I 0"
-    assert pixel(ImageMath.eval("notequal(B, B)", B=B)) == "I 0"
-    assert pixel(ImageMath.eval("notequal(Z, Z)", Z=Z)) == "I 0"
-    assert pixel(ImageMath.eval("notequal(A, B)", A=A, B=B)) == "I 1"
-    assert pixel(ImageMath.eval("notequal(B, A)", A=A, B=B)) == "I 1"
-    assert pixel(ImageMath.eval("notequal(A, Z)", A=A, Z=Z)) == "I 1"
diff --git a/Tests/test_imagemath_lambda_eval.py b/Tests/test_imagemath_lambda_eval.py
new file mode 100644
index 000000000..360325780
--- /dev/null
+++ b/Tests/test_imagemath_lambda_eval.py
@@ -0,0 +1,507 @@
+from __future__ import annotations
+
+from typing import Any
+
+import pytest
+
+from PIL import Image, ImageMath
+
+
+def pixel(im: Image.Image | int) -> str | int:
+    if isinstance(im, int):
+        return int(im)  # hack to deal with booleans
+
+    return f"{im.mode} {repr(im.getpixel((0, 0)))}"
+
+
+A = Image.new("L", (1, 1), 1)
+B = Image.new("L", (1, 1), 2)
+Z = Image.new("L", (1, 1), 0)  # Z for zero
+F = Image.new("F", (1, 1), 3)
+I = Image.new("I", (1, 1), 4)  # noqa: E741
+
+A2 = A.resize((2, 2))
+B2 = B.resize((2, 2))
+
+images: dict[str, Any] = {"A": A, "B": B, "F": F, "I": I}
+
+
+def test_sanity() -> None:
+    assert ImageMath.lambda_eval(lambda args: 1) == 1
+    assert ImageMath.lambda_eval(lambda args: 1 + args["A"], A=2) == 3
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] + args["B"], A=A, B=B))
+        == "I 3"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] + args["B"], **images))
+        == "I 3"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["float"](args["A"]) + args["B"], **images
+            )
+        )
+        == "F 3.0"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["int"](args["float"](args["A"]) + args["B"]), **images
+            )
+        )
+        == "I 3"
+    )
+
+
+def test_options_deprecated() -> None:
+    with pytest.warns(DeprecationWarning):
+        assert ImageMath.lambda_eval(lambda args: 1, images) == 1
+
+
+def test_ops() -> None:
+    assert pixel(ImageMath.lambda_eval(lambda args: args["A"] * -1, **images)) == "I -1"
+
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] + args["B"], **images))
+        == "I 3"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] - args["B"], **images))
+        == "I -1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] * args["B"], **images))
+        == "I 2"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] / args["B"], **images))
+        == "I 0"
+    )
+    assert pixel(ImageMath.lambda_eval(lambda args: args["B"] ** 2, **images)) == "I 4"
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] ** 33, **images))
+        == "I 2147483647"
+    )
+
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["float"](args["A"]) + args["B"], **images
+            )
+        )
+        == "F 3.0"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["float"](args["A"]) - args["B"], **images
+            )
+        )
+        == "F -1.0"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["float"](args["A"]) * args["B"], **images
+            )
+        )
+        == "F 2.0"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["float"](args["A"]) / args["B"], **images
+            )
+        )
+        == "F 0.5"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(lambda args: args["float"](args["B"]) ** 2, **images)
+        )
+        == "F 4.0"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(lambda args: args["float"](args["B"]) ** 33, **images)
+        )
+        == "F 8589934592.0"
+    )
+
+
+def test_logical() -> None:
+    assert pixel(ImageMath.lambda_eval(lambda args: not args["A"], **images)) == 0
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] and args["B"], **images))
+        == "L 2"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] or args["B"], **images))
+        == "L 1"
+    )
+
+
+def test_convert() -> None:
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["convert"](args["A"] + args["B"], "L"), **images
+            )
+        )
+        == "L 3"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["convert"](args["A"] + args["B"], "1"), **images
+            )
+        )
+        == "1 0"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["convert"](args["A"] + args["B"], "RGB"), **images
+            )
+        )
+        == "RGB (3, 3, 3)"
+    )
+
+
+def test_compare() -> None:
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["min"](args["A"], args["B"]), **images
+            )
+        )
+        == "I 1"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["max"](args["A"], args["B"]), **images
+            )
+        )
+        == "I 2"
+    )
+    assert pixel(ImageMath.lambda_eval(lambda args: args["A"] == 1, **images)) == "I 1"
+    assert pixel(ImageMath.lambda_eval(lambda args: args["A"] == 2, **images)) == "I 0"
+
+
+def test_one_image_larger() -> None:
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] + args["B"], A=A2, B=B))
+        == "I 3"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] + args["B"], A=A, B=B2))
+        == "I 3"
+    )
+
+
+def test_abs() -> None:
+    assert pixel(ImageMath.lambda_eval(lambda args: abs(args["A"]), A=A)) == "I 1"
+    assert pixel(ImageMath.lambda_eval(lambda args: abs(args["B"]), B=B)) == "I 2"
+
+
+def test_binary_mod() -> None:
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] % args["A"], A=A)) == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] % args["B"], B=B)) == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] % args["B"], A=A, B=B))
+        == "I 1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] % args["A"], A=A, B=B))
+        == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["Z"] % args["A"], A=A, Z=Z))
+        == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["Z"] % args["B"], B=B, Z=Z))
+        == "I 0"
+    )
+
+
+def test_bitwise_invert() -> None:
+    assert pixel(ImageMath.lambda_eval(lambda args: ~args["Z"], Z=Z)) == "I -1"
+    assert pixel(ImageMath.lambda_eval(lambda args: ~args["A"], A=A)) == "I -2"
+    assert pixel(ImageMath.lambda_eval(lambda args: ~args["B"], B=B)) == "I -3"
+
+
+def test_bitwise_and() -> None:
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["Z"] & args["Z"], A=A, Z=Z))
+        == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["Z"] & args["A"], A=A, Z=Z))
+        == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] & args["Z"], A=A, Z=Z))
+        == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] & args["A"], A=A, Z=Z))
+        == "I 1"
+    )
+
+
+def test_bitwise_or() -> None:
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["Z"] | args["Z"], A=A, Z=Z))
+        == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["Z"] | args["A"], A=A, Z=Z))
+        == "I 1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] | args["Z"], A=A, Z=Z))
+        == "I 1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] | args["A"], A=A, Z=Z))
+        == "I 1"
+    )
+
+
+def test_bitwise_xor() -> None:
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["Z"] ^ args["Z"], A=A, Z=Z))
+        == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["Z"] ^ args["A"], A=A, Z=Z))
+        == "I 1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] ^ args["Z"], A=A, Z=Z))
+        == "I 1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] ^ args["A"], A=A, Z=Z))
+        == "I 0"
+    )
+
+
+def test_bitwise_leftshift() -> None:
+    assert pixel(ImageMath.lambda_eval(lambda args: args["Z"] << 0, Z=Z)) == "I 0"
+    assert pixel(ImageMath.lambda_eval(lambda args: args["Z"] << 1, Z=Z)) == "I 0"
+    assert pixel(ImageMath.lambda_eval(lambda args: args["A"] << 0, A=A)) == "I 1"
+    assert pixel(ImageMath.lambda_eval(lambda args: args["A"] << 1, A=A)) == "I 2"
+
+
+def test_bitwise_rightshift() -> None:
+    assert pixel(ImageMath.lambda_eval(lambda args: args["Z"] >> 0, Z=Z)) == "I 0"
+    assert pixel(ImageMath.lambda_eval(lambda args: args["Z"] >> 1, Z=Z)) == "I 0"
+    assert pixel(ImageMath.lambda_eval(lambda args: args["A"] >> 0, A=A)) == "I 1"
+    assert pixel(ImageMath.lambda_eval(lambda args: args["A"] >> 1, A=A)) == "I 0"
+
+
+def test_logical_eq() -> None:
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] == args["A"], A=A)) == "I 1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] == args["B"], B=B)) == "I 1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] == args["B"], A=A, B=B))
+        == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] == args["A"], A=A, B=B))
+        == "I 0"
+    )
+
+
+def test_logical_ne() -> None:
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] != args["A"], A=A)) == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] != args["B"], B=B)) == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] != args["B"], A=A, B=B))
+        == "I 1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] != args["A"], A=A, B=B))
+        == "I 1"
+    )
+
+
+def test_logical_lt() -> None:
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] < args["A"], A=A)) == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] < args["B"], B=B)) == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] < args["B"], A=A, B=B))
+        == "I 1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] < args["A"], A=A, B=B))
+        == "I 0"
+    )
+
+
+def test_logical_le() -> None:
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] <= args["A"], A=A)) == "I 1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] <= args["B"], B=B)) == "I 1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] <= args["B"], A=A, B=B))
+        == "I 1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] <= args["A"], A=A, B=B))
+        == "I 0"
+    )
+
+
+def test_logical_gt() -> None:
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] > args["A"], A=A)) == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] > args["B"], B=B)) == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] > args["B"], A=A, B=B))
+        == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] > args["A"], A=A, B=B))
+        == "I 1"
+    )
+
+
+def test_logical_ge() -> None:
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] >= args["A"], A=A)) == "I 1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] >= args["B"], B=B)) == "I 1"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["A"] >= args["B"], A=A, B=B))
+        == "I 0"
+    )
+    assert (
+        pixel(ImageMath.lambda_eval(lambda args: args["B"] >= args["A"], A=A, B=B))
+        == "I 1"
+    )
+
+
+def test_logical_equal() -> None:
+    assert (
+        pixel(
+            ImageMath.lambda_eval(lambda args: args["equal"](args["A"], args["A"]), A=A)
+        )
+        == "I 1"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(lambda args: args["equal"](args["B"], args["B"]), B=B)
+        )
+        == "I 1"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(lambda args: args["equal"](args["Z"], args["Z"]), Z=Z)
+        )
+        == "I 1"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["equal"](args["A"], args["B"]), A=A, B=B
+            )
+        )
+        == "I 0"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["equal"](args["B"], args["A"]), A=A, B=B
+            )
+        )
+        == "I 0"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["equal"](args["A"], args["Z"]), A=A, Z=Z
+            )
+        )
+        == "I 0"
+    )
+
+
+def test_logical_not_equal() -> None:
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["notequal"](args["A"], args["A"]), A=A
+            )
+        )
+        == "I 0"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["notequal"](args["B"], args["B"]), B=B
+            )
+        )
+        == "I 0"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["notequal"](args["Z"], args["Z"]), Z=Z
+            )
+        )
+        == "I 0"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["notequal"](args["A"], args["B"]), A=A, B=B
+            )
+        )
+        == "I 1"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["notequal"](args["B"], args["A"]), A=A, B=B
+            )
+        )
+        == "I 1"
+    )
+    assert (
+        pixel(
+            ImageMath.lambda_eval(
+                lambda args: args["notequal"](args["A"], args["Z"]), A=A, Z=Z
+            )
+        )
+        == "I 1"
+    )
diff --git a/Tests/test_imagemath_unsafe_eval.py b/Tests/test_imagemath_unsafe_eval.py
new file mode 100644
index 000000000..b7ac84691
--- /dev/null
+++ b/Tests/test_imagemath_unsafe_eval.py
@@ -0,0 +1,228 @@
+from __future__ import annotations
+
+from typing import Any
+
+import pytest
+
+from PIL import Image, ImageMath
+
+
+def pixel(im: Image.Image | int) -> str | int:
+    if isinstance(im, int):
+        return int(im)  # hack to deal with booleans
+
+    return f"{im.mode} {repr(im.getpixel((0, 0)))}"
+
+
+A = Image.new("L", (1, 1), 1)
+B = Image.new("L", (1, 1), 2)
+Z = Image.new("L", (1, 1), 0)  # Z for zero
+F = Image.new("F", (1, 1), 3)
+I = Image.new("I", (1, 1), 4)  # noqa: E741
+
+A2 = A.resize((2, 2))
+B2 = B.resize((2, 2))
+
+images: dict[str, Any] = {"A": A, "B": B, "F": F, "I": I}
+
+
+def test_sanity() -> None:
+    assert ImageMath.unsafe_eval("1") == 1
+    assert ImageMath.unsafe_eval("1+A", A=2) == 3
+    assert pixel(ImageMath.unsafe_eval("A+B", A=A, B=B)) == "I 3"
+    assert pixel(ImageMath.unsafe_eval("A+B", **images)) == "I 3"
+    assert pixel(ImageMath.unsafe_eval("float(A)+B", **images)) == "F 3.0"
+    assert pixel(ImageMath.unsafe_eval("int(float(A)+B)", **images)) == "I 3"
+
+
+def test_eval_deprecated() -> None:
+    with pytest.warns(DeprecationWarning):
+        assert ImageMath.eval("1") == 1
+
+
+def test_options_deprecated() -> None:
+    with pytest.warns(DeprecationWarning):
+        assert ImageMath.unsafe_eval("1", images) == 1
+
+
+def test_ops() -> None:
+    assert pixel(ImageMath.unsafe_eval("-A", **images)) == "I -1"
+    assert pixel(ImageMath.unsafe_eval("+B", **images)) == "L 2"
+
+    assert pixel(ImageMath.unsafe_eval("A+B", **images)) == "I 3"
+    assert pixel(ImageMath.unsafe_eval("A-B", **images)) == "I -1"
+    assert pixel(ImageMath.unsafe_eval("A*B", **images)) == "I 2"
+    assert pixel(ImageMath.unsafe_eval("A/B", **images)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("B**2", **images)) == "I 4"
+    assert pixel(ImageMath.unsafe_eval("B**33", **images)) == "I 2147483647"
+
+    assert pixel(ImageMath.unsafe_eval("float(A)+B", **images)) == "F 3.0"
+    assert pixel(ImageMath.unsafe_eval("float(A)-B", **images)) == "F -1.0"
+    assert pixel(ImageMath.unsafe_eval("float(A)*B", **images)) == "F 2.0"
+    assert pixel(ImageMath.unsafe_eval("float(A)/B", **images)) == "F 0.5"
+    assert pixel(ImageMath.unsafe_eval("float(B)**2", **images)) == "F 4.0"
+    assert pixel(ImageMath.unsafe_eval("float(B)**33", **images)) == "F 8589934592.0"
+
+
+@pytest.mark.parametrize(
+    "expression",
+    (
+        "exec('pass')",
+        "(lambda: exec('pass'))()",
+        "(lambda: (lambda: exec('pass'))())()",
+    ),
+)
+def test_prevent_exec(expression: str) -> None:
+    with pytest.raises(ValueError):
+        ImageMath.unsafe_eval(expression)
+
+
+def test_prevent_double_underscores() -> None:
+    with pytest.raises(ValueError):
+        ImageMath.unsafe_eval("1", __=None)
+
+
+def test_prevent_builtins() -> None:
+    with pytest.raises(ValueError):
+        ImageMath.unsafe_eval("(lambda: exec('exit()'))()", exec=None)
+
+
+def test_logical() -> None:
+    assert pixel(ImageMath.unsafe_eval("not A", **images)) == 0
+    assert pixel(ImageMath.unsafe_eval("A and B", **images)) == "L 2"
+    assert pixel(ImageMath.unsafe_eval("A or B", **images)) == "L 1"
+
+
+def test_convert() -> None:
+    assert pixel(ImageMath.unsafe_eval("convert(A+B, 'L')", **images)) == "L 3"
+    assert pixel(ImageMath.unsafe_eval("convert(A+B, '1')", **images)) == "1 0"
+    assert (
+        pixel(ImageMath.unsafe_eval("convert(A+B, 'RGB')", **images)) == "RGB (3, 3, 3)"
+    )
+
+
+def test_compare() -> None:
+    assert pixel(ImageMath.unsafe_eval("min(A, B)", **images)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("max(A, B)", **images)) == "I 2"
+    assert pixel(ImageMath.unsafe_eval("A == 1", **images)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("A == 2", **images)) == "I 0"
+
+
+def test_one_image_larger() -> None:
+    assert pixel(ImageMath.unsafe_eval("A+B", A=A2, B=B)) == "I 3"
+    assert pixel(ImageMath.unsafe_eval("A+B", A=A, B=B2)) == "I 3"
+
+
+def test_abs() -> None:
+    assert pixel(ImageMath.unsafe_eval("abs(A)", A=A)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("abs(B)", B=B)) == "I 2"
+
+
+def test_binary_mod() -> None:
+    assert pixel(ImageMath.unsafe_eval("A%A", A=A)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("B%B", B=B)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("A%B", A=A, B=B)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("B%A", A=A, B=B)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("Z%A", A=A, Z=Z)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("Z%B", B=B, Z=Z)) == "I 0"
+
+
+def test_bitwise_invert() -> None:
+    assert pixel(ImageMath.unsafe_eval("~Z", Z=Z)) == "I -1"
+    assert pixel(ImageMath.unsafe_eval("~A", A=A)) == "I -2"
+    assert pixel(ImageMath.unsafe_eval("~B", B=B)) == "I -3"
+
+
+def test_bitwise_and() -> None:
+    assert pixel(ImageMath.unsafe_eval("Z&Z", A=A, Z=Z)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("Z&A", A=A, Z=Z)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("A&Z", A=A, Z=Z)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("A&A", A=A, Z=Z)) == "I 1"
+
+
+def test_bitwise_or() -> None:
+    assert pixel(ImageMath.unsafe_eval("Z|Z", A=A, Z=Z)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("Z|A", A=A, Z=Z)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("A|Z", A=A, Z=Z)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("A|A", A=A, Z=Z)) == "I 1"
+
+
+def test_bitwise_xor() -> None:
+    assert pixel(ImageMath.unsafe_eval("Z^Z", A=A, Z=Z)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("Z^A", A=A, Z=Z)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("A^Z", A=A, Z=Z)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("A^A", A=A, Z=Z)) == "I 0"
+
+
+def test_bitwise_leftshift() -> None:
+    assert pixel(ImageMath.unsafe_eval("Z<<0", Z=Z)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("Z<<1", Z=Z)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("A<<0", A=A)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("A<<1", A=A)) == "I 2"
+
+
+def test_bitwise_rightshift() -> None:
+    assert pixel(ImageMath.unsafe_eval("Z>>0", Z=Z)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("Z>>1", Z=Z)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("A>>0", A=A)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("A>>1", A=A)) == "I 0"
+
+
+def test_logical_eq() -> None:
+    assert pixel(ImageMath.unsafe_eval("A==A", A=A)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("B==B", B=B)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("A==B", A=A, B=B)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("B==A", A=A, B=B)) == "I 0"
+
+
+def test_logical_ne() -> None:
+    assert pixel(ImageMath.unsafe_eval("A!=A", A=A)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("B!=B", B=B)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("A!=B", A=A, B=B)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("B!=A", A=A, B=B)) == "I 1"
+
+
+def test_logical_lt() -> None:
+    assert pixel(ImageMath.unsafe_eval("A<A", A=A)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("B<B", B=B)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("A<B", A=A, B=B)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("B<A", A=A, B=B)) == "I 0"
+
+
+def test_logical_le() -> None:
+    assert pixel(ImageMath.unsafe_eval("A<=A", A=A)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("B<=B", B=B)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("A<=B", A=A, B=B)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("B<=A", A=A, B=B)) == "I 0"
+
+
+def test_logical_gt() -> None:
+    assert pixel(ImageMath.unsafe_eval("A>A", A=A)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("B>B", B=B)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("A>B", A=A, B=B)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("B>A", A=A, B=B)) == "I 1"
+
+
+def test_logical_ge() -> None:
+    assert pixel(ImageMath.unsafe_eval("A>=A", A=A)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("B>=B", B=B)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("A>=B", A=A, B=B)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("B>=A", A=A, B=B)) == "I 1"
+
+
+def test_logical_equal() -> None:
+    assert pixel(ImageMath.unsafe_eval("equal(A, A)", A=A)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("equal(B, B)", B=B)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("equal(Z, Z)", Z=Z)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("equal(A, B)", A=A, B=B)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("equal(B, A)", A=A, B=B)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("equal(A, Z)", A=A, Z=Z)) == "I 0"
+
+
+def test_logical_not_equal() -> None:
+    assert pixel(ImageMath.unsafe_eval("notequal(A, A)", A=A)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("notequal(B, B)", B=B)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("notequal(Z, Z)", Z=Z)) == "I 0"
+    assert pixel(ImageMath.unsafe_eval("notequal(A, B)", A=A, B=B)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("notequal(B, A)", A=A, B=B)) == "I 1"
+    assert pixel(ImageMath.unsafe_eval("notequal(A, Z)", A=A, Z=Z)) == "I 1"
diff --git a/Tests/test_imagemorph.py b/Tests/test_imagemorph.py
index 29c71f917..6180a7b5d 100644
--- a/Tests/test_imagemorph.py
+++ b/Tests/test_imagemorph.py
@@ -1,4 +1,8 @@
 # Test the ImageMorphology functionality
+from __future__ import annotations
+
+from pathlib import Path
+
 import pytest
 
 from PIL import Image, ImageMorph, _imagingmorph
@@ -6,7 +10,7 @@ from PIL import Image, ImageMorph, _imagingmorph
 from .helper import assert_image_equal_tofile, hopper
 
 
-def string_to_img(image_string):
+def string_to_img(image_string: str) -> Image.Image:
     """Turn a string image representation into a binary image"""
     rows = [s for s in image_string.replace(" ", "").split("\n") if len(s)]
     height = len(rows)
@@ -34,41 +38,37 @@ A = string_to_img(
 )
 
 
-def img_to_string(im):
+def img_to_string(im: Image.Image) -> str:
     """Turn a (small) binary image into a string representation"""
     chars = ".1"
-    width, height = im.size
-    return "\n".join(
-        "".join(chars[im.getpixel((c, r)) > 0] for c in range(width))
-        for r in range(height)
-    )
+    result = []
+    for r in range(im.height):
+        line = ""
+        for c in range(im.width):
+            value = im.getpixel((c, r))
+            assert not isinstance(value, tuple)
+            assert value is not None
+            line += chars[value > 0]
+        result.append(line)
+    return "\n".join(result)
 
 
-def img_string_normalize(im):
+def img_string_normalize(im: str) -> str:
     return img_to_string(string_to_img(im))
 
 
-def assert_img_equal_img_string(a, b_string):
+def assert_img_equal_img_string(a: Image.Image, b_string: str) -> None:
     assert img_to_string(a) == img_string_normalize(b_string)
 
 
-def test_str_to_img():
+def test_str_to_img() -> None:
     assert_image_equal_tofile(A, "Tests/images/morph_a.png")
 
 
-def create_lut():
-    for op in ("corner", "dilation4", "dilation8", "erosion4", "erosion8", "edge"):
-        lb = ImageMorph.LutBuilder(op_name=op)
-        lut = lb.build_lut()
-        with open(f"Tests/images/{op}.lut", "wb") as f:
-            f.write(lut)
-
-
-# create_lut()
 @pytest.mark.parametrize(
     "op", ("corner", "dilation4", "dilation8", "erosion4", "erosion8", "edge")
 )
-def test_lut(op):
+def test_lut(op: str) -> None:
     lb = ImageMorph.LutBuilder(op_name=op)
     assert lb.get_lut() is None
 
@@ -77,21 +77,22 @@ def test_lut(op):
         assert lut == bytearray(f.read())
 
 
-def test_no_operator_loaded():
+def test_no_operator_loaded() -> None:
+    im = Image.new("L", (1, 1))
     mop = ImageMorph.MorphOp()
     with pytest.raises(Exception) as e:
-        mop.apply(None)
+        mop.apply(im)
     assert str(e.value) == "No operator loaded"
     with pytest.raises(Exception) as e:
-        mop.match(None)
+        mop.match(im)
     assert str(e.value) == "No operator loaded"
     with pytest.raises(Exception) as e:
-        mop.save_lut(None)
+        mop.save_lut("")
     assert str(e.value) == "No operator loaded"
 
 
 # Test the named patterns
-def test_erosion8():
+def test_erosion8() -> None:
     # erosion8
     mop = ImageMorph.MorphOp(op_name="erosion8")
     count, Aout = mop.apply(A)
@@ -110,7 +111,7 @@ def test_erosion8():
     )
 
 
-def test_dialation8():
+def test_dialation8() -> None:
     # dialation8
     mop = ImageMorph.MorphOp(op_name="dilation8")
     count, Aout = mop.apply(A)
@@ -129,7 +130,7 @@ def test_dialation8():
     )
 
 
-def test_erosion4():
+def test_erosion4() -> None:
     # erosion4
     mop = ImageMorph.MorphOp(op_name="dilation4")
     count, Aout = mop.apply(A)
@@ -148,7 +149,7 @@ def test_erosion4():
     )
 
 
-def test_edge():
+def test_edge() -> None:
     # edge
     mop = ImageMorph.MorphOp(op_name="edge")
     count, Aout = mop.apply(A)
@@ -167,7 +168,7 @@ def test_edge():
     )
 
 
-def test_corner():
+def test_corner() -> None:
     # Create a corner detector pattern
     mop = ImageMorph.MorphOp(patterns=["1:(... ... ...)->0", "4:(00. 01. ...)->1"])
     count, Aout = mop.apply(A)
@@ -195,7 +196,7 @@ def test_corner():
     assert tuple(coords) == ((2, 2), (4, 2), (2, 4), (4, 4))
 
 
-def test_mirroring():
+def test_mirroring() -> None:
     # Test 'M' for mirroring
     mop = ImageMorph.MorphOp(patterns=["1:(... ... ...)->0", "M:(00. 01. ...)->1"])
     count, Aout = mop.apply(A)
@@ -214,7 +215,7 @@ def test_mirroring():
     )
 
 
-def test_negate():
+def test_negate() -> None:
     # Test 'N' for negate
     mop = ImageMorph.MorphOp(patterns=["1:(... ... ...)->0", "N:(00. 01. ...)->1"])
     count, Aout = mop.apply(A)
@@ -233,7 +234,7 @@ def test_negate():
     )
 
 
-def test_incorrect_mode():
+def test_incorrect_mode() -> None:
     im = hopper("RGB")
     mop = ImageMorph.MorphOp(op_name="erosion8")
 
@@ -248,7 +249,7 @@ def test_incorrect_mode():
     assert str(e.value) == "Image mode must be L"
 
 
-def test_add_patterns():
+def test_add_patterns() -> None:
     # Arrange
     lb = ImageMorph.LutBuilder(op_name="corner")
     assert lb.patterns == ["1:(... ... ...)->0", "4:(00. 01. ...)->1"]
@@ -266,12 +267,12 @@ def test_add_patterns():
     ]
 
 
-def test_unknown_pattern():
+def test_unknown_pattern() -> None:
     with pytest.raises(Exception):
         ImageMorph.LutBuilder(op_name="unknown")
 
 
-def test_pattern_syntax_error():
+def test_pattern_syntax_error() -> None:
     # Arrange
     lb = ImageMorph.LutBuilder(op_name="corner")
     new_patterns = ["a pattern with a syntax error"]
@@ -283,7 +284,7 @@ def test_pattern_syntax_error():
     assert str(e.value) == 'Syntax error in pattern "a pattern with a syntax error"'
 
 
-def test_load_invalid_mrl():
+def test_load_invalid_mrl() -> None:
     # Arrange
     invalid_mrl = "Tests/images/hopper.png"
     mop = ImageMorph.MorphOp()
@@ -294,7 +295,7 @@ def test_load_invalid_mrl():
     assert str(e.value) == "Wrong size operator file!"
 
 
-def test_roundtrip_mrl(tmp_path):
+def test_roundtrip_mrl(tmp_path: Path) -> None:
     # Arrange
     tempfile = str(tmp_path / "temp.mrl")
     mop = ImageMorph.MorphOp(op_name="corner")
@@ -308,7 +309,7 @@ def test_roundtrip_mrl(tmp_path):
     assert mop.lut == initial_lut
 
 
-def test_set_lut():
+def test_set_lut() -> None:
     # Arrange
     lb = ImageMorph.LutBuilder(op_name="corner")
     lut = lb.build_lut()
@@ -321,19 +322,19 @@ def test_set_lut():
     assert mop.lut == lut
 
 
-def test_wrong_mode():
+def test_wrong_mode() -> None:
     lut = ImageMorph.LutBuilder(op_name="corner").build_lut()
-    imrgb = Image.new("RGB", (10, 10))
-    iml = Image.new("L", (10, 10))
+    imrgb_ptr = Image.new("RGB", (10, 10)).getim()
+    iml_ptr = Image.new("L", (10, 10)).getim()
 
     with pytest.raises(RuntimeError):
-        _imagingmorph.apply(bytes(lut), imrgb.im.id, iml.im.id)
+        _imagingmorph.apply(bytes(lut), imrgb_ptr, iml_ptr)
 
     with pytest.raises(RuntimeError):
-        _imagingmorph.apply(bytes(lut), iml.im.id, imrgb.im.id)
+        _imagingmorph.apply(bytes(lut), iml_ptr, imrgb_ptr)
 
     with pytest.raises(RuntimeError):
-        _imagingmorph.match(bytes(lut), imrgb.im.id)
+        _imagingmorph.match(bytes(lut), imrgb_ptr)
 
     # Should not raise
-    _imagingmorph.match(bytes(lut), iml.im.id)
+    _imagingmorph.match(bytes(lut), iml_ptr)
diff --git a/Tests/test_imageops.py b/Tests/test_imageops.py
index b05785be0..2fb2a60b6 100644
--- a/Tests/test_imageops.py
+++ b/Tests/test_imageops.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, ImageDraw, ImageOps, ImageStat, features
@@ -11,8 +13,12 @@ from .helper import (
 )
 
 
-class Deformer:
-    def getmesh(self, im):
+class Deformer(ImageOps.SupportsGetMesh):
+    def getmesh(
+        self, im: Image.Image
+    ) -> list[
+        tuple[tuple[int, int, int, int], tuple[int, int, int, int, int, int, int, int]]
+    ]:
         x, y = im.size
         return [((0, 0, x, y), (0, 0, x, 0, x, y, y, 0))]
 
@@ -20,7 +26,7 @@ class Deformer:
 deformer = Deformer()
 
 
-def test_sanity():
+def test_sanity() -> None:
     ImageOps.autocontrast(hopper("L"))
     ImageOps.autocontrast(hopper("RGB"))
 
@@ -39,6 +45,9 @@ def test_sanity():
     ImageOps.contain(hopper("L"), (128, 128))
     ImageOps.contain(hopper("RGB"), (128, 128))
 
+    ImageOps.cover(hopper("L"), (128, 128))
+    ImageOps.cover(hopper("RGB"), (128, 128))
+
     ImageOps.crop(hopper("L"), 1)
     ImageOps.crop(hopper("RGB"), 1)
 
@@ -79,7 +88,7 @@ def test_sanity():
     ImageOps.exif_transpose(hopper("RGB"))
 
 
-def test_1pxfit():
+def test_1pxfit() -> None:
     # Division by zero in equalize if image is 1 pixel high
     newimg = ImageOps.fit(hopper("RGB").resize((1, 1)), (35, 35))
     assert newimg.size == (35, 35)
@@ -91,7 +100,7 @@ def test_1pxfit():
     assert newimg.size == (35, 35)
 
 
-def test_fit_same_ratio():
+def test_fit_same_ratio() -> None:
     # The ratio for this image is 1000.0 / 755 = 1.3245033112582782
     # If the ratios are not acknowledged to be the same,
     # and Pillow attempts to adjust the width to
@@ -103,13 +112,13 @@ def test_fit_same_ratio():
 
 
 @pytest.mark.parametrize("new_size", ((256, 256), (512, 256), (256, 512)))
-def test_contain(new_size):
+def test_contain(new_size: tuple[int, int]) -> None:
     im = hopper()
     new_im = ImageOps.contain(im, new_size)
     assert new_im.size == (256, 256)
 
 
-def test_contain_round():
+def test_contain_round() -> None:
     im = Image.new("1", (43, 63), 1)
     new_im = ImageOps.contain(im, (5, 7))
     assert new_im.width == 5
@@ -119,7 +128,21 @@ def test_contain_round():
     assert new_im.height == 5
 
 
-def test_pad():
+@pytest.mark.parametrize(
+    "image_name, expected_size",
+    (
+        ("colr_bungee.png", (1024, 256)),  # landscape
+        ("imagedraw_stroke_multiline.png", (256, 640)),  # portrait
+        ("hopper.png", (256, 256)),  # square
+    ),
+)
+def test_cover(image_name: str, expected_size: tuple[int, int]) -> None:
+    with Image.open("Tests/images/" + image_name) as im:
+        new_im = ImageOps.cover(im, (256, 256))
+        assert new_im.size == expected_size
+
+
+def test_pad() -> None:
     # Same ratio
     im = hopper()
     new_size = (im.width * 2, im.height * 2)
@@ -139,17 +162,21 @@ def test_pad():
             )
 
 
-def test_pad_round():
+def test_pad_round() -> None:
     im = Image.new("1", (1, 1), 1)
     new_im = ImageOps.pad(im, (4, 1))
-    assert new_im.load()[2, 0] == 1
+    px = new_im.load()
+    assert px is not None
+    assert px[2, 0] == 1
 
     new_im = ImageOps.pad(im, (1, 4))
-    assert new_im.load()[0, 2] == 1
+    px = new_im.load()
+    assert px is not None
+    assert px[0, 2] == 1
 
 
 @pytest.mark.parametrize("mode", ("P", "PA"))
-def test_palette(mode):
+def test_palette(mode: str) -> None:
     im = hopper(mode)
 
     # Expand
@@ -163,7 +190,7 @@ def test_palette(mode):
     )
 
 
-def test_pil163():
+def test_pil163() -> None:
     # Division by zero in equalize if < 255 pixels in image (@PIL163)
 
     i = hopper("RGB").resize((15, 16))
@@ -173,7 +200,7 @@ def test_pil163():
     ImageOps.equalize(i.convert("RGB"))
 
 
-def test_scale():
+def test_scale() -> None:
     # Test the scaling function
     i = hopper("L").resize((50, 50))
 
@@ -191,7 +218,7 @@ def test_scale():
 
 
 @pytest.mark.parametrize("border", (10, (1, 2, 3, 4)))
-def test_expand_palette(border):
+def test_expand_palette(border: int | tuple[int, int, int, int]) -> None:
     with Image.open("Tests/images/p_16.tga") as im:
         im_expanded = ImageOps.expand(im, border, (255, 0, 0))
 
@@ -200,6 +227,7 @@ def test_expand_palette(border):
         else:
             left, top, right, bottom = border
         px = im_expanded.convert("RGB").load()
+        assert px is not None
         for x in range(im_expanded.width):
             for b in range(top):
                 assert px[x, b] == (255, 0, 0)
@@ -217,7 +245,7 @@ def test_expand_palette(border):
         assert_image_equal(im_cropped, im)
 
 
-def test_colorize_2color():
+def test_colorize_2color() -> None:
     # Test the colorizing function with 2-color functionality
 
     # Open test image (256px by 10px, black to white)
@@ -231,27 +259,33 @@ def test_colorize_2color():
     left = (0, 1)
     middle = (127, 1)
     right = (255, 1)
+    value = im_test.getpixel(left)
+    assert isinstance(value, tuple)
     assert_tuple_approx_equal(
-        im_test.getpixel(left),
+        value,
         (255, 0, 0),
         threshold=1,
         msg="black test pixel incorrect",
     )
+    value = im_test.getpixel(middle)
+    assert isinstance(value, tuple)
     assert_tuple_approx_equal(
-        im_test.getpixel(middle),
+        value,
         (127, 63, 0),
         threshold=1,
         msg="mid test pixel incorrect",
     )
+    value = im_test.getpixel(right)
+    assert isinstance(value, tuple)
     assert_tuple_approx_equal(
-        im_test.getpixel(right),
+        value,
         (0, 127, 0),
         threshold=1,
         msg="white test pixel incorrect",
     )
 
 
-def test_colorize_2color_offset():
+def test_colorize_2color_offset() -> None:
     # Test the colorizing function with 2-color functionality and offset
 
     # Open test image (256px by 10px, black to white)
@@ -267,27 +301,33 @@ def test_colorize_2color_offset():
     left = (25, 1)
     middle = (75, 1)
     right = (125, 1)
+    value = im_test.getpixel(left)
+    assert isinstance(value, tuple)
     assert_tuple_approx_equal(
-        im_test.getpixel(left),
+        value,
         (255, 0, 0),
         threshold=1,
         msg="black test pixel incorrect",
     )
+    value = im_test.getpixel(middle)
+    assert isinstance(value, tuple)
     assert_tuple_approx_equal(
-        im_test.getpixel(middle),
+        value,
         (127, 63, 0),
         threshold=1,
         msg="mid test pixel incorrect",
     )
+    value = im_test.getpixel(right)
+    assert isinstance(value, tuple)
     assert_tuple_approx_equal(
-        im_test.getpixel(right),
+        value,
         (0, 127, 0),
         threshold=1,
         msg="white test pixel incorrect",
     )
 
 
-def test_colorize_3color_offset():
+def test_colorize_3color_offset() -> None:
     # Test the colorizing function with 3-color functionality and offset
 
     # Open test image (256px by 10px, black to white)
@@ -311,43 +351,51 @@ def test_colorize_3color_offset():
     middle = (100, 1)
     right_middle = (150, 1)
     right = (225, 1)
+    value = im_test.getpixel(left)
+    assert isinstance(value, tuple)
     assert_tuple_approx_equal(
-        im_test.getpixel(left),
+        value,
         (255, 0, 0),
         threshold=1,
         msg="black test pixel incorrect",
     )
+    value = im_test.getpixel(left_middle)
+    assert isinstance(value, tuple)
     assert_tuple_approx_equal(
-        im_test.getpixel(left_middle),
+        value,
         (127, 0, 127),
         threshold=1,
         msg="low-mid test pixel incorrect",
     )
+    value = im_test.getpixel(middle)
+    assert isinstance(value, tuple)
+    assert_tuple_approx_equal(value, (0, 0, 255), threshold=1, msg="mid incorrect")
+    value = im_test.getpixel(right_middle)
+    assert isinstance(value, tuple)
     assert_tuple_approx_equal(
-        im_test.getpixel(middle), (0, 0, 255), threshold=1, msg="mid incorrect"
-    )
-    assert_tuple_approx_equal(
-        im_test.getpixel(right_middle),
+        value,
         (0, 63, 127),
         threshold=1,
         msg="high-mid test pixel incorrect",
     )
+    value = im_test.getpixel(right)
+    assert isinstance(value, tuple)
     assert_tuple_approx_equal(
-        im_test.getpixel(right),
+        value,
         (0, 127, 0),
         threshold=1,
         msg="white test pixel incorrect",
     )
 
 
-def test_exif_transpose():
+def test_exif_transpose() -> None:
     exts = [".jpg"]
-    if features.check("webp") and features.check("webp_anim"):
+    if features.check("webp"):
         exts.append(".webp")
     for ext in exts:
         with Image.open("Tests/images/hopper" + ext) as base_im:
 
-            def check(orientation_im):
+            def check(orientation_im: Image.Image) -> None:
                 for im in [
                     orientation_im,
                     orientation_im.copy(),
@@ -357,6 +405,7 @@ def test_exif_transpose():
                     else:
                         original_exif = im.info["exif"]
                     transposed_im = ImageOps.exif_transpose(im)
+                    assert transposed_im is not None
                     assert_image_similar(base_im, transposed_im, 17)
                     if orientation_im is base_im:
                         assert "exif" not in im.info
@@ -368,6 +417,7 @@ def test_exif_transpose():
 
                     # Repeat the operation to test that it does not keep transposing
                     transposed_im2 = ImageOps.exif_transpose(transposed_im)
+                    assert transposed_im2 is not None
                     assert_image_equal(transposed_im2, transposed_im)
 
             check(base_im)
@@ -383,6 +433,7 @@ def test_exif_transpose():
             assert im.getexif()[0x0112] == 3
 
             transposed_im = ImageOps.exif_transpose(im)
+            assert transposed_im is not None
             assert 0x0112 not in transposed_im.getexif()
 
             transposed_im._reload_exif()
@@ -395,16 +446,29 @@ def test_exif_transpose():
         assert im.getexif()[0x0112] == 3
 
         transposed_im = ImageOps.exif_transpose(im)
+        assert transposed_im is not None
         assert 0x0112 not in transposed_im.getexif()
 
     # Orientation set directly on Image.Exif
     im = hopper()
     im.getexif()[0x0112] = 3
     transposed_im = ImageOps.exif_transpose(im)
+    assert transposed_im is not None
     assert 0x0112 not in transposed_im.getexif()
 
 
-def test_exif_transpose_in_place():
+def test_exif_transpose_xml_without_xmp() -> None:
+    with Image.open("Tests/images/xmp_tags_orientation.png") as im:
+        assert im.getexif()[0x0112] == 3
+        assert "XML:com.adobe.xmp" in im.info
+
+        del im.info["xmp"]
+        transposed_im = ImageOps.exif_transpose(im)
+        assert transposed_im is not None
+        assert 0x0112 not in transposed_im.getexif()
+
+
+def test_exif_transpose_in_place() -> None:
     with Image.open("Tests/images/orientation_rectangle.jpg") as im:
         assert im.size == (2, 1)
         assert im.getexif()[0x0112] == 8
@@ -416,18 +480,24 @@ def test_exif_transpose_in_place():
         assert_image_equal(im, expected)
 
 
-def test_autocontrast_cutoff():
+def test_autocontrast_unsupported_mode() -> None:
+    im = Image.new("RGBA", (1, 1))
+    with pytest.raises(OSError):
+        ImageOps.autocontrast(im)
+
+
+def test_autocontrast_cutoff() -> None:
     # Test the cutoff argument of autocontrast
     with Image.open("Tests/images/bw_gradient.png") as img:
 
-        def autocontrast(cutoff):
+        def autocontrast(cutoff: int | tuple[int, int]) -> list[int]:
             return ImageOps.autocontrast(img, cutoff).histogram()
 
         assert autocontrast(10) == autocontrast((10, 10))
         assert autocontrast(10) != autocontrast((1, 10))
 
 
-def test_autocontrast_mask_toy_input():
+def test_autocontrast_mask_toy_input() -> None:
     # Test the mask argument of autocontrast
     with Image.open("Tests/images/bw_gradient.png") as img:
         rect_mask = Image.new("L", img.size, 0)
@@ -446,7 +516,7 @@ def test_autocontrast_mask_toy_input():
         assert ImageStat.Stat(result_nomask).median == [128]
 
 
-def test_autocontrast_mask_real_input():
+def test_autocontrast_mask_real_input() -> None:
     # Test the autocontrast with a rectangular mask
     with Image.open("Tests/images/iptc.jpg") as img:
         rect_mask = Image.new("L", img.size, 0)
@@ -461,20 +531,20 @@ def test_autocontrast_mask_real_input():
         assert result_nomask != result
         assert_tuple_approx_equal(
             ImageStat.Stat(result, mask=rect_mask).median,
-            [195, 202, 184],
+            (195, 202, 184),
             threshold=2,
             msg="autocontrast with mask pixel incorrect",
         )
         assert_tuple_approx_equal(
             ImageStat.Stat(result_nomask).median,
-            [119, 106, 79],
+            (119, 106, 79),
             threshold=2,
             msg="autocontrast without mask pixel incorrect",
         )
 
 
-def test_autocontrast_preserve_tone():
-    def autocontrast(mode, preserve_tone):
+def test_autocontrast_preserve_tone() -> None:
+    def autocontrast(mode: str, preserve_tone: bool) -> list[int]:
         im = hopper(mode)
         return ImageOps.autocontrast(im, preserve_tone=preserve_tone).histogram()
 
@@ -482,7 +552,7 @@ def test_autocontrast_preserve_tone():
     assert autocontrast("L", True) == autocontrast("L", False)
 
 
-def test_autocontrast_preserve_gradient():
+def test_autocontrast_preserve_gradient() -> None:
     gradient = Image.linear_gradient("L")
 
     # test with a grayscale gradient that extends to 0,255.
@@ -508,7 +578,7 @@ def test_autocontrast_preserve_gradient():
 @pytest.mark.parametrize(
     "color", ((255, 255, 255), (127, 255, 0), (127, 127, 127), (0, 0, 0))
 )
-def test_autocontrast_preserve_one_color(color):
+def test_autocontrast_preserve_one_color(color: tuple[int, int, int]) -> None:
     img = Image.new("RGB", (10, 10), color)
 
     # single color images shouldn't change
diff --git a/Tests/test_imageops_usm.py b/Tests/test_imageops_usm.py
index 8837ed2a2..920012d86 100644
--- a/Tests/test_imageops_usm.py
+++ b/Tests/test_imageops_usm.py
@@ -1,10 +1,14 @@
+from __future__ import annotations
+
+from collections.abc import Generator
+
 import pytest
 
-from PIL import Image, ImageFilter
+from PIL import Image, ImageFile, ImageFilter
 
 
 @pytest.fixture
-def test_images():
+def test_images() -> Generator[dict[str, ImageFile.ImageFile], None, None]:
     ims = {
         "im": Image.open("Tests/images/hopper.ppm"),
         "snakes": Image.open("Tests/images/color_snakes.png"),
@@ -16,7 +20,7 @@ def test_images():
             im.close()
 
 
-def test_filter_api(test_images):
+def test_filter_api(test_images: dict[str, ImageFile.ImageFile]) -> None:
     im = test_images["im"]
 
     test_filter = ImageFilter.GaussianBlur(2.0)
@@ -24,13 +28,13 @@ def test_filter_api(test_images):
     assert i.mode == "RGB"
     assert i.size == (128, 128)
 
-    test_filter = ImageFilter.UnsharpMask(2.0, 125, 8)
-    i = im.filter(test_filter)
+    test_filter2 = ImageFilter.UnsharpMask(2.0, 125, 8)
+    i = im.filter(test_filter2)
     assert i.mode == "RGB"
     assert i.size == (128, 128)
 
 
-def test_usm_formats(test_images):
+def test_usm_formats(test_images: dict[str, ImageFile.ImageFile]) -> None:
     im = test_images["im"]
 
     usm = ImageFilter.UnsharpMask
@@ -48,13 +52,12 @@ def test_usm_formats(test_images):
         im.convert("YCbCr").filter(usm)
 
 
-def test_blur_formats(test_images):
+def test_blur_formats(test_images: dict[str, ImageFile.ImageFile]) -> None:
     im = test_images["im"]
 
     blur = ImageFilter.GaussianBlur
     with pytest.raises(ValueError):
         im.convert("1").filter(blur)
-    blur(im.convert("L"))
     with pytest.raises(ValueError):
         im.convert("I").filter(blur)
     with pytest.raises(ValueError):
@@ -66,7 +69,7 @@ def test_blur_formats(test_images):
         im.convert("YCbCr").filter(blur)
 
 
-def test_usm_accuracy(test_images):
+def test_usm_accuracy(test_images: dict[str, ImageFile.ImageFile]) -> None:
     snakes = test_images["snakes"]
 
     src = snakes.convert("RGB")
@@ -75,7 +78,7 @@ def test_usm_accuracy(test_images):
     assert i.tobytes() == src.tobytes()
 
 
-def test_blur_accuracy(test_images):
+def test_blur_accuracy(test_images: dict[str, ImageFile.ImageFile]) -> None:
     snakes = test_images["snakes"]
 
     i = snakes.filter(ImageFilter.GaussianBlur(0.4))
@@ -98,7 +101,7 @@ def test_blur_accuracy(test_images):
         assert i.im.getpixel((x, y))[c] >= 250
     # Fuzzy match.
 
-    def gp(x, y):
+    def gp(x: int, y: int) -> tuple[int, ...]:
         return i.im.getpixel((x, y))
 
     assert 236 <= gp(7, 4)[0] <= 239
diff --git a/Tests/test_imagepalette.py b/Tests/test_imagepalette.py
index baa698bb4..6cf0079dd 100644
--- a/Tests/test_imagepalette.py
+++ b/Tests/test_imagepalette.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+from pathlib import Path
+
 import pytest
 
 from PIL import Image, ImagePalette
@@ -5,19 +9,19 @@ from PIL import Image, ImagePalette
 from .helper import assert_image_equal, assert_image_equal_tofile
 
 
-def test_sanity():
+def test_sanity() -> None:
     palette = ImagePalette.ImagePalette("RGB", list(range(256)) * 3)
     assert len(palette.colors) == 256
 
 
-def test_reload():
+def test_reload() -> None:
     with Image.open("Tests/images/hopper.gif") as im:
         original = im.copy()
         im.palette.dirty = 1
         assert_image_equal(im.convert("RGB"), original.convert("RGB"))
 
 
-def test_getcolor():
+def test_getcolor() -> None:
     palette = ImagePalette.ImagePalette()
     assert len(palette.palette) == 0
     assert len(palette.colors) == 0
@@ -41,10 +45,10 @@ def test_getcolor():
 
     # Test unknown color specifier
     with pytest.raises(ValueError):
-        palette.getcolor("unknown")
+        palette.getcolor("unknown")  # type: ignore[arg-type]
 
 
-def test_getcolor_rgba_color_rgb_palette():
+def test_getcolor_rgba_color_rgb_palette() -> None:
     palette = ImagePalette.ImagePalette("RGB")
 
     # Opaque RGBA colors are converted
@@ -63,7 +67,7 @@ def test_getcolor_rgba_color_rgb_palette():
         (255, ImagePalette.ImagePalette("RGB", list(range(256)) * 3)),
     ],
 )
-def test_getcolor_not_special(index, palette):
+def test_getcolor_not_special(index: int, palette: ImagePalette.ImagePalette) -> None:
     im = Image.new("P", (1, 1))
 
     # Do not use transparency index as a new color
@@ -77,25 +81,25 @@ def test_getcolor_not_special(index, palette):
     assert index2 not in (index, index1)
 
 
-def test_file(tmp_path):
+def test_file(tmp_path: Path) -> None:
     palette = ImagePalette.ImagePalette("RGB", list(range(256)) * 3)
 
     f = str(tmp_path / "temp.lut")
 
     palette.save(f)
 
-    p = ImagePalette.load(f)
+    lut = ImagePalette.load(f)
 
     # load returns raw palette information
-    assert len(p[0]) == 768
-    assert p[1] == "RGB"
+    assert len(lut[0]) == 768
+    assert lut[1] == "RGB"
 
-    p = ImagePalette.raw(p[1], p[0])
+    p = ImagePalette.raw(lut[1], lut[0])
     assert isinstance(p, ImagePalette.ImagePalette)
     assert p.palette == palette.tobytes()
 
 
-def test_make_linear_lut():
+def test_make_linear_lut() -> None:
     # Arrange
     black = 0
     white = 255
@@ -111,7 +115,7 @@ def test_make_linear_lut():
         assert lut[i] == i
 
 
-def test_make_linear_lut_not_yet_implemented():
+def test_make_linear_lut_not_yet_implemented() -> None:
     # Update after FIXME
     # Arrange
     black = 1
@@ -122,7 +126,7 @@ def test_make_linear_lut_not_yet_implemented():
         ImagePalette.make_linear_lut(black, white)
 
 
-def test_make_gamma_lut():
+def test_make_gamma_lut() -> None:
     # Arrange
     exp = 5
 
@@ -140,7 +144,7 @@ def test_make_gamma_lut():
     assert lut[255] == 255
 
 
-def test_rawmode_valueerrors(tmp_path):
+def test_rawmode_valueerrors(tmp_path: Path) -> None:
     # Arrange
     palette = ImagePalette.raw("RGB", list(range(256)) * 3)
 
@@ -154,7 +158,7 @@ def test_rawmode_valueerrors(tmp_path):
         palette.save(f)
 
 
-def test_getdata():
+def test_getdata() -> None:
     # Arrange
     data_in = list(range(256)) * 3
     palette = ImagePalette.ImagePalette("RGB", data_in)
@@ -166,7 +170,7 @@ def test_getdata():
     assert mode == "RGB"
 
 
-def test_rawmode_getdata():
+def test_rawmode_getdata() -> None:
     # Arrange
     data_in = list(range(256)) * 3
     palette = ImagePalette.raw("RGB", data_in)
@@ -179,7 +183,7 @@ def test_rawmode_getdata():
     assert data_in == data_out
 
 
-def test_2bit_palette(tmp_path):
+def test_2bit_palette(tmp_path: Path) -> None:
     # issue #2258, 2 bit palettes are corrupted.
     outfile = str(tmp_path / "temp.png")
 
@@ -191,6 +195,6 @@ def test_2bit_palette(tmp_path):
     assert_image_equal_tofile(img, outfile)
 
 
-def test_invalid_palette():
+def test_invalid_palette() -> None:
     with pytest.raises(OSError):
         ImagePalette.load("Tests/images/hopper.jpg")
diff --git a/Tests/test_imagepath.py b/Tests/test_imagepath.py
index c112cfd87..76bdf1e5f 100644
--- a/Tests/test_imagepath.py
+++ b/Tests/test_imagepath.py
@@ -1,13 +1,16 @@
+from __future__ import annotations
+
 import array
 import math
 import struct
+from collections.abc import Sequence
 
 import pytest
 
 from PIL import Image, ImagePath
 
 
-def test_path():
+def test_path() -> None:
     p = ImagePath.Path(list(range(10)))
 
     # sequence interface
@@ -55,7 +58,9 @@ def test_path():
         ImagePath.Path((0, 1)),
     ),
 )
-def test_path_constructors(coords):
+def test_path_constructors(
+    coords: Sequence[float] | array.array[float] | ImagePath.Path,
+) -> None:
     # Arrange / Act
     p = ImagePath.Path(coords)
 
@@ -73,7 +78,9 @@ def test_path_constructors(coords):
         [[0.0, 1.0]],
     ),
 )
-def test_invalid_path_constructors(coords):
+def test_invalid_path_constructors(
+    coords: tuple[str, str] | Sequence[Sequence[int]]
+) -> None:
     # Act
     with pytest.raises(ValueError) as e:
         ImagePath.Path(coords)
@@ -91,7 +98,7 @@ def test_invalid_path_constructors(coords):
         [0, 1, 2],
     ),
 )
-def test_path_odd_number_of_coordinates(coords):
+def test_path_odd_number_of_coordinates(coords: Sequence[int]) -> None:
     # Act
     with pytest.raises(ValueError) as e:
         ImagePath.Path(coords)
@@ -109,7 +116,9 @@ def test_path_odd_number_of_coordinates(coords):
         (1, (0.0, 0.0, 0.0, 0.0)),
     ],
 )
-def test_getbbox(coords, expected):
+def test_getbbox(
+    coords: int | list[int], expected: tuple[float, float, float, float]
+) -> None:
     # Arrange
     p = ImagePath.Path(coords)
 
@@ -117,7 +126,7 @@ def test_getbbox(coords, expected):
     assert p.getbbox() == expected
 
 
-def test_getbbox_no_args():
+def test_getbbox_no_args() -> None:
     # Arrange
     p = ImagePath.Path([0, 1, 2, 3])
 
@@ -133,7 +142,7 @@ def test_getbbox_no_args():
         (list(range(6)), [(0.0, 3.0), (4.0, 9.0), (8.0, 15.0)]),
     ],
 )
-def test_map(coords, expected):
+def test_map(coords: int | list[int], expected: list[tuple[float, float]]) -> None:
     # Arrange
     p = ImagePath.Path(coords)
 
@@ -145,7 +154,7 @@ def test_map(coords, expected):
     assert list(p) == expected
 
 
-def test_transform():
+def test_transform() -> None:
     # Arrange
     p = ImagePath.Path([0, 1, 2, 3])
     theta = math.pi / 15
@@ -163,7 +172,7 @@ def test_transform():
     ]
 
 
-def test_transform_with_wrap():
+def test_transform_with_wrap() -> None:
     # Arrange
     p = ImagePath.Path([0, 1, 2, 3])
     theta = math.pi / 15
@@ -182,7 +191,7 @@ def test_transform_with_wrap():
     ]
 
 
-def test_overflow_segfault():
+def test_overflow_segfault() -> None:
     # Some Pythons fail getting the argument as an integer, and it falls
     # through to the sequence. Seeing this on 32-bit Windows.
     with pytest.raises((TypeError, MemoryError)):
@@ -195,13 +204,24 @@ def test_overflow_segfault():
             x[i] = b"0" * 16
 
 
+def test_compact_within_map() -> None:
+    p = ImagePath.Path([0, 1])
+
+    def map_func(x: float, y: float) -> tuple[float, float]:
+        p.compact()
+        return 0, 0
+
+    with pytest.raises(ValueError):
+        p.map(map_func)
+
+
 class Evil:
-    def __init__(self):
+    def __init__(self) -> None:
         self.corrupt = Image.core.path(0x4000000000000000)
 
-    def __getitem__(self, i):
+    def __getitem__(self, i: int) -> bytes:
         x = self.corrupt[i]
         return struct.pack("dd", x[0], x[1])
 
-    def __setitem__(self, i, x):
+    def __setitem__(self, i: int, x: bytes) -> None:
         self.corrupt[i] = struct.unpack("dd", x)
diff --git a/Tests/test_imageqt.py b/Tests/test_imageqt.py
index 2c73a2094..2d7ca0ae0 100644
--- a/Tests/test_imageqt.py
+++ b/Tests/test_imageqt.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import warnings
 
 import pytest
@@ -14,7 +16,7 @@ if ImageQt.qt_is_installed:
     from PIL.ImageQt import qRgba
 
 
-def test_rgb():
+def test_rgb() -> None:
     # from https://doc.qt.io/archives/qt-4.8/qcolor.html
     # typedef QRgb
     # An ARGB quadruplet on the format #AARRGGBB,
@@ -26,7 +28,7 @@ def test_rgb():
 
     assert qRgb(0, 0, 0) == qRgba(0, 0, 0, 255)
 
-    def checkrgb(r, g, b):
+    def checkrgb(r: int, g: int, b: int) -> None:
         val = ImageQt.rgb(r, g, b)
         val = val % 2**24  # drop the alpha
         assert val >> 16 == r
@@ -39,20 +41,17 @@ def test_rgb():
     checkrgb(0, 0, 255)
 
 
-def test_image():
-    modes = ["1", "RGB", "RGBA", "L", "P"]
-    qt_format = ImageQt.QImage.Format if ImageQt.qt_version == "6" else ImageQt.QImage
-    if hasattr(qt_format, "Format_Grayscale16"):  # Qt 5.13+
-        modes.append("I;16")
-
-    for mode in modes:
-        im = hopper(mode)
-        roundtripped_im = ImageQt.fromqimage(ImageQt.ImageQt(im))
-        if mode not in ("RGB", "RGBA"):
-            im = im.convert("RGB")
-        assert_image_similar(roundtripped_im, im, 1)
+@pytest.mark.parametrize("mode", ("1", "RGB", "RGBA", "L", "P", "I;16"))
+def test_image(mode: str) -> None:
+    im = hopper(mode)
+    roundtripped_im = ImageQt.fromqimage(ImageQt.ImageQt(im))
+    if mode not in ("RGB", "RGBA"):
+        im = im.convert("RGB")
+    assert_image_similar(roundtripped_im, im, 1)
 
 
-def test_closed_file():
+def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         ImageQt.ImageQt("Tests/images/hopper.gif")
diff --git a/Tests/test_imagesequence.py b/Tests/test_imagesequence.py
index 62f528332..9b37435eb 100644
--- a/Tests/test_imagesequence.py
+++ b/Tests/test_imagesequence.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+from pathlib import Path
+
 import pytest
 
 from PIL import Image, ImageSequence, TiffImagePlugin
@@ -5,7 +9,7 @@ from PIL import Image, ImageSequence, TiffImagePlugin
 from .helper import assert_image_equal, hopper, skip_unless_feature
 
 
-def test_sanity(tmp_path):
+def test_sanity(tmp_path: Path) -> None:
     test_file = str(tmp_path / "temp.im")
 
     im = hopper("RGB")
@@ -22,10 +26,10 @@ def test_sanity(tmp_path):
     assert index == 1
 
     with pytest.raises(AttributeError):
-        ImageSequence.Iterator(0)
+        ImageSequence.Iterator(0)  # type: ignore[arg-type]
 
 
-def test_iterator():
+def test_iterator() -> None:
     with Image.open("Tests/images/multipage.tiff") as im:
         i = ImageSequence.Iterator(im)
         for index in range(0, im.n_frames):
@@ -36,14 +40,18 @@ def test_iterator():
             next(i)
 
 
-def test_iterator_min_frame():
+def test_iterator_min_frame() -> None:
     with Image.open("Tests/images/hopper.psd") as im:
         i = ImageSequence.Iterator(im)
         for index in range(1, im.n_frames):
             assert i[index] == next(i)
 
 
-def _test_multipage_tiff():
+@pytest.mark.parametrize(
+    "libtiff", (pytest.param(True, marks=skip_unless_feature("libtiff")), False)
+)
+def test_multipage_tiff(monkeypatch: pytest.MonkeyPatch, libtiff: bool) -> None:
+    monkeypatch.setattr(TiffImagePlugin, "READ_LIBTIFF", libtiff)
     with Image.open("Tests/images/multipage.tiff") as im:
         for index, frame in enumerate(ImageSequence.Iterator(im)):
             frame.load()
@@ -51,29 +59,19 @@ def _test_multipage_tiff():
             frame.convert("RGB")
 
 
-def test_tiff():
-    _test_multipage_tiff()
-
-
-@skip_unless_feature("libtiff")
-def test_libtiff():
-    TiffImagePlugin.READ_LIBTIFF = True
-    _test_multipage_tiff()
-    TiffImagePlugin.READ_LIBTIFF = False
-
-
-def test_consecutive():
+def test_consecutive() -> None:
     with Image.open("Tests/images/multipage.tiff") as im:
         first_frame = None
         for frame in ImageSequence.Iterator(im):
             if first_frame is None:
                 first_frame = frame.copy()
+        assert first_frame is not None
         for frame in ImageSequence.Iterator(im):
             assert_image_equal(frame, first_frame)
             break
 
 
-def test_palette_mmap():
+def test_palette_mmap() -> None:
     # Using mmap in ImageFile can require to reload the palette.
     with Image.open("Tests/images/multipage-mmap.tiff") as im:
         color1 = im.getpalette()[:3]
@@ -82,7 +80,7 @@ def test_palette_mmap():
         assert color1 == color2
 
 
-def test_all_frames():
+def test_all_frames() -> None:
     # Test a single image
     with Image.open("Tests/images/iss634.gif") as im:
         ims = ImageSequence.all_frames(im)
diff --git a/Tests/test_imageshow.py b/Tests/test_imageshow.py
index e54372b60..7a2f58767 100644
--- a/Tests/test_imageshow.py
+++ b/Tests/test_imageshow.py
@@ -1,3 +1,8 @@
+from __future__ import annotations
+
+import os
+from typing import Any
+
 import pytest
 
 from PIL import Image, ImageShow
@@ -5,14 +10,17 @@ from PIL import Image, ImageShow
 from .helper import hopper, is_win32, on_ci
 
 
-def test_sanity():
+def test_sanity() -> None:
     dir(Image)
     dir(ImageShow)
 
 
-def test_register():
-    # Test registering a viewer that is not a class
-    ImageShow.register("not a class")
+def test_register() -> None:
+    # Test registering a viewer that is an instance
+    class TestViewer(ImageShow.Viewer):
+        pass
+
+    ImageShow.register(TestViewer())
 
     # Restore original state
     ImageShow._viewers.pop()
@@ -22,9 +30,9 @@ def test_register():
     "order",
     [-1, 0],
 )
-def test_viewer_show(order):
+def test_viewer_show(order: int) -> None:
     class TestViewer(ImageShow.Viewer):
-        def show_image(self, image, **options):
+        def show_image(self, image: Image.Image, **options: Any) -> bool:
             self.methodCalled = True
             return True
 
@@ -46,12 +54,12 @@ def test_viewer_show(order):
     reason="Only run on CIs; hangs on Windows CIs",
 )
 @pytest.mark.parametrize("mode", ("1", "I;16", "LA", "RGB", "RGBA"))
-def test_show(mode):
+def test_show(mode: str) -> None:
     im = hopper(mode)
     assert ImageShow.show(im)
 
 
-def test_show_without_viewers():
+def test_show_without_viewers() -> None:
     viewers = ImageShow._viewers
     ImageShow._viewers = []
 
@@ -61,31 +69,53 @@ def test_show_without_viewers():
     ImageShow._viewers = viewers
 
 
-def test_viewer():
+@pytest.mark.parametrize(
+    "viewer",
+    (
+        ImageShow.Viewer(),
+        ImageShow.WindowsViewer(),
+        ImageShow.MacViewer(),
+        ImageShow.XDGViewer(),
+        ImageShow.DisplayViewer(),
+        ImageShow.GmDisplayViewer(),
+        ImageShow.EogViewer(),
+        ImageShow.XVViewer(),
+        ImageShow.IPythonViewer(),
+    ),
+)
+def test_show_file(viewer: ImageShow.Viewer) -> None:
+    assert not os.path.exists("missing.png")
+
+    with pytest.raises(FileNotFoundError):
+        viewer.show_file("missing.png")
+
+
+def test_viewer() -> None:
     viewer = ImageShow.Viewer()
 
-    assert viewer.get_format(None) is None
+    im = Image.new("L", (1, 1))
+    assert viewer.get_format(im) is None
 
     with pytest.raises(NotImplementedError):
-        viewer.get_command(None)
+        viewer.get_command("")
 
 
 @pytest.mark.parametrize("viewer", ImageShow._viewers)
-def test_viewers(viewer):
+def test_viewers(viewer: ImageShow.Viewer) -> None:
     try:
         viewer.get_command("test.jpg")
     except NotImplementedError:
         pass
 
 
-def test_ipythonviewer():
+def test_ipythonviewer() -> None:
     pytest.importorskip("IPython", reason="IPython not installed")
     for viewer in ImageShow._viewers:
         if isinstance(viewer, ImageShow.IPythonViewer):
             test_viewer = viewer
             break
     else:
-        assert False
+        pytest.fail("IPythonViewer not found")
 
-    im = hopper()
-    assert test_viewer.show(im) == 1
+    with hopper() as im:
+        assert test_viewer.show(im) == 1
diff --git a/Tests/test_imagestat.py b/Tests/test_imagestat.py
index b3b5db13f..0dfbc5a2a 100644
--- a/Tests/test_imagestat.py
+++ b/Tests/test_imagestat.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image, ImageStat
@@ -5,7 +7,7 @@ from PIL import Image, ImageStat
 from .helper import hopper
 
 
-def test_sanity():
+def test_sanity() -> None:
     im = hopper()
 
     st = ImageStat.Stat(im)
@@ -23,13 +25,13 @@ def test_sanity():
     st.stddev
 
     with pytest.raises(AttributeError):
-        st.spam()
+        st.spam()  # type: ignore[attr-defined]
 
     with pytest.raises(TypeError):
-        ImageStat.Stat(1)
+        ImageStat.Stat(1)  # type: ignore[arg-type]
 
 
-def test_hopper():
+def test_hopper() -> None:
     im = hopper()
 
     st = ImageStat.Stat(im)
@@ -42,7 +44,7 @@ def test_hopper():
     assert st.sum[2] == 1563008
 
 
-def test_constant():
+def test_constant() -> None:
     im = Image.new("L", (128, 128), 128)
 
     st = ImageStat.Stat(im)
diff --git a/Tests/test_imagetk.py b/Tests/test_imagetk.py
index a0c9574ba..4484dca10 100644
--- a/Tests/test_imagetk.py
+++ b/Tests/test_imagetk.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image
@@ -21,7 +23,7 @@ TK_MODES = ("1", "L", "P", "RGB", "RGBA")
 pytestmark = pytest.mark.skipif(not HAS_TK, reason="Tk not installed")
 
 
-def setup_module():
+def setup_module() -> None:
     try:
         # setup tk
         tk.Frame()
@@ -32,7 +34,7 @@ def setup_module():
         pytest.skip(f"TCL Error: {v}")
 
 
-def test_kw():
+def test_kw() -> None:
     TEST_JPG = "Tests/images/hopper.jpg"
     TEST_PNG = "Tests/images/hopper.png"
     with Image.open(TEST_JPG) as im1:
@@ -43,10 +45,12 @@ def test_kw():
 
             # Test "file"
             im = ImageTk._get_image_from_kw(kw)
+            assert im is not None
             assert_image_equal(im, im1)
 
             # Test "data"
             im = ImageTk._get_image_from_kw(kw)
+            assert im is not None
             assert_image_equal(im, im2)
 
     # Test no relevant entry
@@ -55,7 +59,7 @@ def test_kw():
 
 
 @pytest.mark.parametrize("mode", TK_MODES)
-def test_photoimage(mode):
+def test_photoimage(mode: str) -> None:
     # test as image:
     im = hopper(mode)
 
@@ -68,8 +72,13 @@ def test_photoimage(mode):
     reloaded = ImageTk.getimage(im_tk)
     assert_image_equal(reloaded, im.convert("RGBA"))
 
+    with pytest.raises(ValueError):
+        ImageTk.PhotoImage()
+    with pytest.raises(ValueError):
+        ImageTk.PhotoImage(mode)
 
-def test_photoimage_apply_transparency():
+
+def test_photoimage_apply_transparency() -> None:
     with Image.open("Tests/images/pil123p.png") as im:
         im_tk = ImageTk.PhotoImage(im)
         reloaded = ImageTk.getimage(im_tk)
@@ -77,7 +86,7 @@ def test_photoimage_apply_transparency():
 
 
 @pytest.mark.parametrize("mode", TK_MODES)
-def test_photoimage_blank(mode):
+def test_photoimage_blank(mode: str) -> None:
     # test a image using mode/size:
     im_tk = ImageTk.PhotoImage(mode, (100, 100))
 
@@ -89,7 +98,7 @@ def test_photoimage_blank(mode):
     assert_image_equal(reloaded.convert(mode), im)
 
 
-def test_bitmapimage():
+def test_bitmapimage() -> None:
     im = hopper("1")
 
     # this should not crash
@@ -100,3 +109,6 @@ def test_bitmapimage():
 
     # reloaded = ImageTk.getimage(im_tk)
     # assert_image_equal(reloaded, im)
+
+    with pytest.raises(ValueError):
+        ImageTk.BitmapImage()
diff --git a/Tests/test_imagewin.py b/Tests/test_imagewin.py
index 5e489284f..e7af160dd 100644
--- a/Tests/test_imagewin.py
+++ b/Tests/test_imagewin.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import ImageWin
@@ -6,10 +8,10 @@ from .helper import hopper, is_win32
 
 
 class TestImageWin:
-    def test_sanity(self):
+    def test_sanity(self) -> None:
         dir(ImageWin)
 
-    def test_hdc(self):
+    def test_hdc(self) -> None:
         # Arrange
         dc = 50
 
@@ -20,7 +22,7 @@ class TestImageWin:
         # Assert
         assert dc2 == 50
 
-    def test_hwnd(self):
+    def test_hwnd(self) -> None:
         # Arrange
         wnd = 50
 
@@ -34,7 +36,7 @@ class TestImageWin:
 
 @pytest.mark.skipif(not is_win32(), reason="Windows only")
 class TestImageWinDib:
-    def test_dib_image(self):
+    def test_dib_image(self) -> None:
         # Arrange
         im = hopper()
 
@@ -44,7 +46,7 @@ class TestImageWinDib:
         # Assert
         assert dib.size == im.size
 
-    def test_dib_mode_string(self):
+    def test_dib_mode_string(self) -> None:
         # Arrange
         mode = "RGBA"
         size = (128, 128)
@@ -55,7 +57,22 @@ class TestImageWinDib:
         # Assert
         assert dib.size == (128, 128)
 
-    def test_dib_paste(self):
+        with pytest.raises(ValueError):
+            ImageWin.Dib(mode)
+
+    def test_dib_hwnd(self) -> None:
+        mode = "RGBA"
+        size = (128, 128)
+        wnd = 0
+
+        dib = ImageWin.Dib(mode, size)
+        hwnd = ImageWin.HWND(wnd)
+
+        dib.expose(hwnd)
+        dib.draw(hwnd, (0, 0) + size)
+        assert isinstance(dib.query_palette(hwnd), int)
+
+    def test_dib_paste(self) -> None:
         # Arrange
         im = hopper()
 
@@ -69,7 +86,7 @@ class TestImageWinDib:
         # Assert
         assert dib.size == (128, 128)
 
-    def test_dib_paste_bbox(self):
+    def test_dib_paste_bbox(self) -> None:
         # Arrange
         im = hopper()
         bbox = (0, 0, 10, 10)
@@ -84,7 +101,7 @@ class TestImageWinDib:
         # Assert
         assert dib.size == (128, 128)
 
-    def test_dib_frombytes_tobytes_roundtrip(self):
+    def test_dib_frombytes_tobytes_roundtrip(self) -> None:
         # Arrange
         # Make two different DIB images
         im = hopper()
diff --git a/Tests/test_imagewin_pointers.py b/Tests/test_imagewin_pointers.py
index df1305655..c23a5c690 100644
--- a/Tests/test_imagewin_pointers.py
+++ b/Tests/test_imagewin_pointers.py
@@ -1,4 +1,7 @@
+from __future__ import annotations
+
 from io import BytesIO
+from pathlib import Path
 
 from PIL import Image, ImageWin
 
@@ -42,21 +45,22 @@ if is_win32():
     memcpy = ctypes.cdll.msvcrt.memcpy
     memcpy.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_size_t]
 
-    CreateCompatibleDC = ctypes.windll.gdi32.CreateCompatibleDC
+    windll = getattr(ctypes, "windll")
+    CreateCompatibleDC = windll.gdi32.CreateCompatibleDC
     CreateCompatibleDC.argtypes = [ctypes.wintypes.HDC]
     CreateCompatibleDC.restype = ctypes.wintypes.HDC
 
-    DeleteDC = ctypes.windll.gdi32.DeleteDC
+    DeleteDC = windll.gdi32.DeleteDC
     DeleteDC.argtypes = [ctypes.wintypes.HDC]
 
-    SelectObject = ctypes.windll.gdi32.SelectObject
+    SelectObject = windll.gdi32.SelectObject
     SelectObject.argtypes = [ctypes.wintypes.HDC, ctypes.wintypes.HGDIOBJ]
     SelectObject.restype = ctypes.wintypes.HGDIOBJ
 
-    DeleteObject = ctypes.windll.gdi32.DeleteObject
+    DeleteObject = windll.gdi32.DeleteObject
     DeleteObject.argtypes = [ctypes.wintypes.HGDIOBJ]
 
-    CreateDIBSection = ctypes.windll.gdi32.CreateDIBSection
+    CreateDIBSection = windll.gdi32.CreateDIBSection
     CreateDIBSection.argtypes = [
         ctypes.wintypes.HDC,
         ctypes.c_void_p,
@@ -67,7 +71,7 @@ if is_win32():
     ]
     CreateDIBSection.restype = ctypes.wintypes.HBITMAP
 
-    def serialize_dib(bi, pixels):
+    def serialize_dib(bi: BITMAPINFOHEADER, pixels: ctypes.c_void_p) -> bytearray:
         bf = BITMAPFILEHEADER()
         bf.bfType = 0x4D42
         bf.bfOffBits = ctypes.sizeof(bf) + bi.biSize
@@ -81,7 +85,7 @@ if is_win32():
         memcpy(bp + bf.bfOffBits, pixels, bi.biSizeImage)
         return bytearray(buf)
 
-    def test_pointer(tmp_path):
+    def test_pointer(tmp_path: Path) -> None:
         im = hopper()
         (width, height) = im.size
         opath = str(tmp_path / "temp.png")
diff --git a/Tests/test_lib_image.py b/Tests/test_lib_image.py
index f6818be46..31548bbc9 100644
--- a/Tests/test_lib_image.py
+++ b/Tests/test_lib_image.py
@@ -1,9 +1,11 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image
 
 
-def test_setmode():
+def test_setmode() -> None:
     im = Image.new("L", (1, 1), 255)
     im.im.setmode("1")
     assert im.im.getpixel((0, 0)) == 255
diff --git a/Tests/test_lib_pack.py b/Tests/test_lib_pack.py
index f7812f62b..b4a300d0c 100644
--- a/Tests/test_lib_pack.py
+++ b/Tests/test_lib_pack.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import sys
 
 import pytest
@@ -8,7 +10,13 @@ X = 255
 
 
 class TestLibPack:
-    def assert_pack(self, mode, rawmode, data, *pixels):
+    def assert_pack(
+        self,
+        mode: str,
+        rawmode: str,
+        data: int | bytes,
+        *pixels: float | tuple[int, ...],
+    ) -> None:
         """
         data - either raw bytes with data or just number of bytes in rawmode.
         """
@@ -22,7 +30,7 @@ class TestLibPack:
 
         assert data == im.tobytes("raw", rawmode)
 
-    def test_1(self):
+    def test_1(self) -> None:
         self.assert_pack("1", "1", b"\x01", 0, 0, 0, 0, 0, 0, 0, X)
         self.assert_pack("1", "1;I", b"\x01", X, X, X, X, X, X, X, 0)
         self.assert_pack("1", "1;R", b"\x01", X, 0, 0, 0, 0, 0, 0, 0)
@@ -35,29 +43,29 @@ class TestLibPack:
 
         self.assert_pack("1", "L", b"\xff\x00\x00\xff\x00\x00", X, 0, 0, X, 0, 0)
 
-    def test_L(self):
+    def test_L(self) -> None:
         self.assert_pack("L", "L", 1, 1, 2, 3, 4)
         self.assert_pack("L", "L;16", b"\x00\xc6\x00\xaf", 198, 175)
         self.assert_pack("L", "L;16B", b"\xc6\x00\xaf\x00", 198, 175)
 
-    def test_LA(self):
+    def test_LA(self) -> None:
         self.assert_pack("LA", "LA", 2, (1, 2), (3, 4), (5, 6))
         self.assert_pack("LA", "LA;L", 2, (1, 4), (2, 5), (3, 6))
 
-    def test_La(self):
+    def test_La(self) -> None:
         self.assert_pack("La", "La", 2, (1, 2), (3, 4), (5, 6))
 
-    def test_P(self):
+    def test_P(self) -> None:
         self.assert_pack("P", "P;1", b"\xe4", 1, 1, 1, 0, 0, 255, 0, 0)
         self.assert_pack("P", "P;2", b"\xe4", 3, 2, 1, 0)
         self.assert_pack("P", "P;4", b"\x02\xef", 0, 2, 14, 15)
         self.assert_pack("P", "P", 1, 1, 2, 3, 4)
 
-    def test_PA(self):
+    def test_PA(self) -> None:
         self.assert_pack("PA", "PA", 2, (1, 2), (3, 4), (5, 6))
         self.assert_pack("PA", "PA;L", 2, (1, 4), (2, 5), (3, 6))
 
-    def test_RGB(self):
+    def test_RGB(self) -> None:
         self.assert_pack("RGB", "RGB", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
         self.assert_pack(
             "RGB", "RGBX", b"\x01\x02\x03\xff\x05\x06\x07\xff", (1, 2, 3), (5, 6, 7)
@@ -77,7 +85,7 @@ class TestLibPack:
         self.assert_pack("RGB", "G", 1, (9, 1, 9), (9, 2, 9), (9, 3, 9))
         self.assert_pack("RGB", "B", 1, (9, 9, 1), (9, 9, 2), (9, 9, 3))
 
-    def test_RGBA(self):
+    def test_RGBA(self) -> None:
         self.assert_pack("RGBA", "RGBA", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
         self.assert_pack(
             "RGBA", "RGBA;L", 4, (1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12)
@@ -99,12 +107,12 @@ class TestLibPack:
         self.assert_pack("RGBA", "B", 1, (6, 7, 1, 9), (6, 7, 2, 0), (6, 7, 3, 9))
         self.assert_pack("RGBA", "A", 1, (6, 7, 0, 1), (6, 7, 0, 2), (0, 7, 0, 3))
 
-    def test_RGBa(self):
+    def test_RGBa(self) -> None:
         self.assert_pack("RGBa", "RGBa", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
         self.assert_pack("RGBa", "BGRa", 4, (3, 2, 1, 4), (7, 6, 5, 8), (11, 10, 9, 12))
         self.assert_pack("RGBa", "aBGR", 4, (4, 3, 2, 1), (8, 7, 6, 5), (12, 11, 10, 9))
 
-    def test_RGBX(self):
+    def test_RGBX(self) -> None:
         self.assert_pack("RGBX", "RGBX", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
         self.assert_pack(
             "RGBX", "RGBX;L", 4, (1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12)
@@ -132,7 +140,7 @@ class TestLibPack:
         self.assert_pack("RGBX", "B", 1, (6, 7, 1, 9), (6, 7, 2, 0), (6, 7, 3, 9))
         self.assert_pack("RGBX", "X", 1, (6, 7, 0, 1), (6, 7, 0, 2), (0, 7, 0, 3))
 
-    def test_CMYK(self):
+    def test_CMYK(self) -> None:
         self.assert_pack("CMYK", "CMYK", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12))
         self.assert_pack(
             "CMYK",
@@ -147,7 +155,7 @@ class TestLibPack:
         )
         self.assert_pack("CMYK", "K", 1, (6, 7, 0, 1), (6, 7, 0, 2), (0, 7, 0, 3))
 
-    def test_YCbCr(self):
+    def test_YCbCr(self) -> None:
         self.assert_pack("YCbCr", "YCbCr", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
         self.assert_pack("YCbCr", "YCbCr;L", 3, (1, 4, 7), (2, 5, 8), (3, 6, 9))
         self.assert_pack(
@@ -170,19 +178,19 @@ class TestLibPack:
         self.assert_pack("YCbCr", "Cb", 1, (6, 1, 8, 9), (6, 2, 8, 9), (6, 3, 8, 9))
         self.assert_pack("YCbCr", "Cr", 1, (6, 7, 1, 9), (6, 7, 2, 0), (6, 7, 3, 9))
 
-    def test_LAB(self):
+    def test_LAB(self) -> None:
         self.assert_pack("LAB", "LAB", 3, (1, 130, 131), (4, 133, 134), (7, 136, 137))
         self.assert_pack("LAB", "L", 1, (1, 9, 9), (2, 9, 9), (3, 9, 9))
         self.assert_pack("LAB", "A", 1, (9, 1, 9), (9, 2, 9), (9, 3, 9))
         self.assert_pack("LAB", "B", 1, (9, 9, 1), (9, 9, 2), (9, 9, 3))
 
-    def test_HSV(self):
+    def test_HSV(self) -> None:
         self.assert_pack("HSV", "HSV", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
         self.assert_pack("HSV", "H", 1, (1, 9, 9), (2, 9, 9), (3, 9, 9))
         self.assert_pack("HSV", "S", 1, (9, 1, 9), (9, 2, 9), (9, 3, 9))
         self.assert_pack("HSV", "V", 1, (9, 9, 1), (9, 9, 2), (9, 9, 3))
 
-    def test_I(self):
+    def test_I(self) -> None:
         self.assert_pack("I", "I;16B", 2, 0x0102, 0x0304)
         self.assert_pack(
             "I", "I;32S", b"\x83\x00\x00\x01\x01\x00\x00\x83", 0x01000083, -2097151999
@@ -207,10 +215,13 @@ class TestLibPack:
                 0x01000083,
             )
 
-    def test_I16(self):
-        self.assert_pack("I;16N", "I;16N", 2, 0x0201, 0x0403, 0x0605)
+    def test_I16(self) -> None:
+        if sys.byteorder == "little":
+            self.assert_pack("I;16N", "I;16N", 2, 0x0201, 0x0403, 0x0605)
+        else:
+            self.assert_pack("I;16N", "I;16N", 2, 0x0102, 0x0304, 0x0506)
 
-    def test_F_float(self):
+    def test_F_float(self) -> None:
         self.assert_pack("F", "F;32F", 4, 1.539989614439558e-36, 4.063216068939723e-34)
 
         if sys.byteorder == "little":
@@ -226,7 +237,13 @@ class TestLibPack:
 
 
 class TestLibUnpack:
-    def assert_unpack(self, mode, rawmode, data, *pixels):
+    def assert_unpack(
+        self,
+        mode: str,
+        rawmode: str,
+        data: int | bytes,
+        *pixels: float | tuple[int, ...],
+    ) -> None:
         """
         data - either raw bytes with data or just number of bytes in rawmode.
         """
@@ -239,7 +256,7 @@ class TestLibUnpack:
         for x, pixel in enumerate(pixels):
             assert pixel == im.getpixel((x, 0))
 
-    def test_1(self):
+    def test_1(self) -> None:
         self.assert_unpack("1", "1", b"\x01", 0, 0, 0, 0, 0, 0, 0, X)
         self.assert_unpack("1", "1;I", b"\x01", X, X, X, X, X, X, X, 0)
         self.assert_unpack("1", "1;R", b"\x01", X, 0, 0, 0, 0, 0, 0, 0)
@@ -252,7 +269,7 @@ class TestLibUnpack:
 
         self.assert_unpack("1", "1;8", b"\x00\x01\x02\xff", 0, X, X, X)
 
-    def test_L(self):
+    def test_L(self) -> None:
         self.assert_unpack("L", "L;2", b"\xe4", 255, 170, 85, 0)
         self.assert_unpack("L", "L;2I", b"\xe4", 0, 85, 170, 255)
         self.assert_unpack("L", "L;2R", b"\xe4", 0, 170, 85, 255)
@@ -271,14 +288,14 @@ class TestLibUnpack:
         self.assert_unpack("L", "L;16", b"\x00\xc6\x00\xaf", 198, 175)
         self.assert_unpack("L", "L;16B", b"\xc6\x00\xaf\x00", 198, 175)
 
-    def test_LA(self):
+    def test_LA(self) -> None:
         self.assert_unpack("LA", "LA", 2, (1, 2), (3, 4), (5, 6))
         self.assert_unpack("LA", "LA;L", 2, (1, 4), (2, 5), (3, 6))
 
-    def test_La(self):
+    def test_La(self) -> None:
         self.assert_unpack("La", "La", 2, (1, 2), (3, 4), (5, 6))
 
-    def test_P(self):
+    def test_P(self) -> None:
         self.assert_unpack("P", "P;1", b"\xe4", 1, 1, 1, 0, 0, 1, 0, 0)
         self.assert_unpack("P", "P;2", b"\xe4", 3, 2, 1, 0)
         # erroneous?
@@ -289,11 +306,11 @@ class TestLibUnpack:
         self.assert_unpack("P", "P", 1, 1, 2, 3, 4)
         self.assert_unpack("P", "P;R", 1, 128, 64, 192, 32)
 
-    def test_PA(self):
+    def test_PA(self) -> None:
         self.assert_unpack("PA", "PA", 2, (1, 2), (3, 4), (5, 6))
         self.assert_unpack("PA", "PA;L", 2, (1, 4), (2, 5), (3, 6))
 
-    def test_RGB(self):
+    def test_RGB(self) -> None:
         self.assert_unpack("RGB", "RGB", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
         self.assert_unpack("RGB", "RGB;L", 3, (1, 4, 7), (2, 5, 8), (3, 6, 9))
         self.assert_unpack("RGB", "RGB;R", 3, (128, 64, 192), (32, 160, 96))
@@ -340,7 +357,21 @@ class TestLibUnpack:
             self.assert_unpack("RGB", "G;16N", 2, (0, 1, 0), (0, 3, 0), (0, 5, 0))
             self.assert_unpack("RGB", "B;16N", 2, (0, 0, 1), (0, 0, 3), (0, 0, 5))
 
-    def test_RGBA(self):
+        self.assert_unpack(
+            "RGB", "CMYK", 4, (250, 249, 248), (242, 241, 240), (234, 233, 233)
+        )
+
+    def test_BGR(self) -> None:
+        with pytest.warns(DeprecationWarning):
+            self.assert_unpack(
+                "BGR;15", "BGR;15", 3, (8, 131, 0), (24, 0, 8), (41, 131, 8)
+            )
+            self.assert_unpack(
+                "BGR;16", "BGR;16", 3, (8, 64, 0), (24, 129, 0), (41, 194, 0)
+            )
+            self.assert_unpack("BGR;24", "BGR;24", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
+
+    def test_RGBA(self) -> None:
         self.assert_unpack("RGBA", "LA", 2, (1, 1, 1, 2), (3, 3, 3, 4), (5, 5, 5, 6))
         self.assert_unpack(
             "RGBA", "LA;16B", 4, (1, 1, 1, 3), (5, 5, 5, 7), (9, 9, 9, 11)
@@ -509,7 +540,7 @@ class TestLibUnpack:
                 "RGBA", "A;16N", 2, (0, 0, 0, 1), (0, 0, 0, 3), (0, 0, 0, 5)
             )
 
-    def test_RGBa(self):
+    def test_RGBa(self) -> None:
         self.assert_unpack(
             "RGBa", "RGBa", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12)
         )
@@ -523,7 +554,7 @@ class TestLibUnpack:
             "RGBa", "aBGR", 4, (4, 3, 2, 1), (8, 7, 6, 5), (12, 11, 10, 9)
         )
 
-    def test_RGBX(self):
+    def test_RGBX(self) -> None:
         self.assert_unpack("RGBX", "RGB", 3, (1, 2, 3, X), (4, 5, 6, X), (7, 8, 9, X))
         self.assert_unpack("RGBX", "RGB;L", 3, (1, 4, 7, X), (2, 5, 8, X), (3, 6, 9, X))
         self.assert_unpack("RGBX", "RGB;16B", 6, (1, 3, 5, X), (7, 9, 11, X))
@@ -568,7 +599,7 @@ class TestLibUnpack:
         self.assert_unpack("RGBX", "B", 1, (0, 0, 1, 0), (0, 0, 2, 0), (0, 0, 3, 0))
         self.assert_unpack("RGBX", "X", 1, (0, 0, 0, 1), (0, 0, 0, 2), (0, 0, 0, 3))
 
-    def test_CMYK(self):
+    def test_CMYK(self) -> None:
         self.assert_unpack(
             "CMYK", "CMYK", 4, (1, 2, 3, 4), (5, 6, 7, 8), (9, 10, 11, 12)
         )
@@ -606,25 +637,25 @@ class TestLibUnpack:
             "CMYK", "K;I", 1, (0, 0, 0, 254), (0, 0, 0, 253), (0, 0, 0, 252)
         )
 
-    def test_YCbCr(self):
+    def test_YCbCr(self) -> None:
         self.assert_unpack("YCbCr", "YCbCr", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
         self.assert_unpack("YCbCr", "YCbCr;L", 3, (1, 4, 7), (2, 5, 8), (3, 6, 9))
         self.assert_unpack("YCbCr", "YCbCrK", 4, (1, 2, 3), (5, 6, 7), (9, 10, 11))
         self.assert_unpack("YCbCr", "YCbCrX", 4, (1, 2, 3), (5, 6, 7), (9, 10, 11))
 
-    def test_LAB(self):
+    def test_LAB(self) -> None:
         self.assert_unpack("LAB", "LAB", 3, (1, 130, 131), (4, 133, 134), (7, 136, 137))
         self.assert_unpack("LAB", "L", 1, (1, 0, 0), (2, 0, 0), (3, 0, 0))
         self.assert_unpack("LAB", "A", 1, (0, 1, 0), (0, 2, 0), (0, 3, 0))
         self.assert_unpack("LAB", "B", 1, (0, 0, 1), (0, 0, 2), (0, 0, 3))
 
-    def test_HSV(self):
+    def test_HSV(self) -> None:
         self.assert_unpack("HSV", "HSV", 3, (1, 2, 3), (4, 5, 6), (7, 8, 9))
         self.assert_unpack("HSV", "H", 1, (1, 0, 0), (2, 0, 0), (3, 0, 0))
         self.assert_unpack("HSV", "S", 1, (0, 1, 0), (0, 2, 0), (0, 3, 0))
         self.assert_unpack("HSV", "V", 1, (0, 0, 1), (0, 0, 2), (0, 0, 3))
 
-    def test_I(self):
+    def test_I(self) -> None:
         self.assert_unpack("I", "I;8", 1, 0x01, 0x02, 0x03, 0x04)
         self.assert_unpack("I", "I;8S", b"\x01\x83", 1, -125)
         self.assert_unpack("I", "I;16", 2, 0x0201, 0x0403)
@@ -665,7 +696,7 @@ class TestLibUnpack:
                 0x01000083,
             )
 
-    def test_F_int(self):
+    def test_F_int(self) -> None:
         self.assert_unpack("F", "F;8", 1, 0x01, 0x02, 0x03, 0x04)
         self.assert_unpack("F", "F;8S", b"\x01\x83", 1, -125)
         self.assert_unpack("F", "F;16", 2, 0x0201, 0x0403)
@@ -704,7 +735,7 @@ class TestLibUnpack:
                 16777348,
             )
 
-    def test_F_float(self):
+    def test_F_float(self) -> None:
         self.assert_unpack(
             "F", "F;32F", 4, 1.539989614439558e-36, 4.063216068939723e-34
         )
@@ -755,7 +786,7 @@ class TestLibUnpack:
                 -1234.5,
             )
 
-    def test_I16(self):
+    def test_I16(self) -> None:
         self.assert_unpack("I;16", "I;16", 2, 0x0201, 0x0403, 0x0605)
         self.assert_unpack("I;16", "I;16B", 2, 0x0102, 0x0304, 0x0506)
         self.assert_unpack("I;16B", "I;16B", 2, 0x0102, 0x0304, 0x0506)
@@ -772,7 +803,7 @@ class TestLibUnpack:
             self.assert_unpack("I;16L", "I;16N", 2, 0x0102, 0x0304, 0x0506)
             self.assert_unpack("I;16N", "I;16N", 2, 0x0102, 0x0304, 0x0506)
 
-    def test_CMYK16(self):
+    def test_CMYK16(self) -> None:
         self.assert_unpack("CMYK", "CMYK;16L", 8, (2, 4, 6, 8), (10, 12, 14, 16))
         self.assert_unpack("CMYK", "CMYK;16B", 8, (1, 3, 5, 7), (9, 11, 13, 15))
         if sys.byteorder == "little":
@@ -780,7 +811,7 @@ class TestLibUnpack:
         else:
             self.assert_unpack("CMYK", "CMYK;16N", 8, (1, 3, 5, 7), (9, 11, 13, 15))
 
-    def test_value_error(self):
+    def test_value_error(self) -> None:
         with pytest.raises(ValueError):
             self.assert_unpack("L", "L", 0, 0)
         with pytest.raises(ValueError):
diff --git a/Tests/test_locale.py b/Tests/test_locale.py
index 7a07fbbe0..386c57cc0 100644
--- a/Tests/test_locale.py
+++ b/Tests/test_locale.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import locale
 
 import pytest
@@ -17,12 +19,12 @@ from PIL import Image
 # 7
 # 160
 
-# one of string.whitespace is not freely convertable into ascii.
+# one of string.whitespace is not freely convertible into ascii.
 
 path = "Tests/images/hopper.jpg"
 
 
-def test_sanity():
+def test_sanity() -> None:
     with Image.open(path):
         pass
     try:
diff --git a/Tests/test_main.py b/Tests/test_main.py
index 46ff63c4e..2582dbee3 100644
--- a/Tests/test_main.py
+++ b/Tests/test_main.py
@@ -1,10 +1,19 @@
+from __future__ import annotations
+
 import os
 import subprocess
 import sys
 
+import pytest
 
-def test_main():
-    out = subprocess.check_output([sys.executable, "-m", "PIL"]).decode("utf-8")
+
+@pytest.mark.parametrize(
+    "args, report",
+    ((["PIL"], False), (["PIL", "--report"], True), (["PIL.report"], True)),
+)
+def test_main(args: list[str], report: bool) -> None:
+    args = [sys.executable, "-m"] + args
+    out = subprocess.check_output(args).decode("utf-8")
     lines = out.splitlines()
     assert lines[0] == "-" * 68
     assert lines[1].startswith("Pillow ")
@@ -13,9 +22,15 @@ def test_main():
     while lines[0].startswith("    "):
         lines = lines[1:]
     assert lines[0] == "-" * 68
-    assert lines[1].startswith("Python modules loaded from ")
-    assert lines[2].startswith("Binary modules loaded from ")
-    assert lines[3] == "-" * 68
+    assert lines[1].startswith("Python executable is")
+    lines = lines[2:]
+    if lines[0].startswith("Environment Python files loaded from"):
+        lines = lines[1:]
+    assert lines[0].startswith("System Python files loaded from")
+    assert lines[1] == "-" * 68
+    assert lines[2].startswith("Python Pillow modules loaded from ")
+    assert lines[3].startswith("Binary Pillow modules loaded from ")
+    assert lines[4] == "-" * 68
     jpeg = (
         os.linesep
         + "-" * 68
@@ -29,4 +44,4 @@ def test_main():
         + "-" * 68
         + os.linesep
     )
-    assert jpeg in out
+    assert report == (jpeg not in out)
diff --git a/Tests/test_map.py b/Tests/test_map.py
index 42b6f7cdd..93140f6e5 100644
--- a/Tests/test_map.py
+++ b/Tests/test_map.py
@@ -1,9 +1,13 @@
+from __future__ import annotations
+
+import sys
+
 import pytest
 
 from PIL import Image
 
 
-def test_overflow():
+def test_overflow() -> None:
     # There is the potential to overflow comparisons in map.c
     # if there are > SIZE_MAX bytes in the image or if
     # the file encodes an offset that makes
@@ -21,7 +25,7 @@ def test_overflow():
     Image.MAX_IMAGE_PIXELS = max_pixels
 
 
-def test_tobytes():
+def test_tobytes() -> None:
     # Note that this image triggers the decompression bomb warning:
     max_pixels = Image.MAX_IMAGE_PIXELS
     Image.MAX_IMAGE_PIXELS = None
@@ -34,7 +38,8 @@ def test_tobytes():
     Image.MAX_IMAGE_PIXELS = max_pixels
 
 
-def test_ysize():
+@pytest.mark.skipif(sys.maxsize <= 2**32, reason="Requires 64-bit system")
+def test_ysize() -> None:
     numpy = pytest.importorskip("numpy", reason="NumPy not installed")
 
     # Should not raise 'Integer overflow in ysize'
diff --git a/Tests/test_mode_i16.py b/Tests/test_mode_i16.py
index 1786dba38..e26f5d283 100644
--- a/Tests/test_mode_i16.py
+++ b/Tests/test_mode_i16.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+from pathlib import Path
+
 import pytest
 
 from PIL import Image
@@ -7,11 +11,13 @@ from .helper import hopper
 original = hopper().resize((32, 32)).convert("I")
 
 
-def verify(im1):
+def verify(im1: Image.Image) -> None:
     im2 = original.copy()
     assert im1.size == im2.size
     pix1 = im1.load()
     pix2 = im2.load()
+    assert pix1 is not None
+    assert pix2 is not None
     for y in range(im1.size[1]):
         for x in range(im1.size[0]):
             xy = x, y
@@ -23,7 +29,7 @@ def verify(im1):
 
 
 @pytest.mark.parametrize("mode", ("L", "I;16", "I;16B", "I;16L", "I"))
-def test_basic(tmp_path, mode):
+def test_basic(tmp_path: Path, mode: str) -> None:
     # PIL 1.1 has limited support for 16-bit image data.  Check that
     # create/copy/transform and save works as expected.
 
@@ -73,8 +79,8 @@ def test_basic(tmp_path, mode):
     assert im_in.getpixel((0, 0)) == min(512, maximum)
 
 
-def test_tobytes():
-    def tobytes(mode):
+def test_tobytes() -> None:
+    def tobytes(mode: str) -> bytes:
         return Image.new(mode, (1, 1), 1).tobytes()
 
     order = 1 if Image._ENDIAN == "<" else -1
@@ -85,7 +91,7 @@ def test_tobytes():
     assert tobytes("I") == b"\x01\x00\x00\x00"[::order]
 
 
-def test_convert():
+def test_convert() -> None:
     im = original.copy()
 
     for mode in ("I;16", "I;16B", "I;16N"):
diff --git a/Tests/test_numpy.py b/Tests/test_numpy.py
index 147f94a71..79cd14b66 100644
--- a/Tests/test_numpy.py
+++ b/Tests/test_numpy.py
@@ -1,18 +1,25 @@
+from __future__ import annotations
+
 import warnings
+from typing import TYPE_CHECKING
 
 import pytest
 
-from PIL import Image
+from PIL import Image, _typing
 
 from .helper import assert_deep_equal, assert_image, hopper, skip_unless_feature
 
-numpy = pytest.importorskip("numpy", reason="NumPy not installed")
+if TYPE_CHECKING:
+    import numpy
+    import numpy.typing as npt
+else:
+    numpy = pytest.importorskip("numpy", reason="NumPy not installed")
 
 TEST_IMAGE_SIZE = (10, 10)
 
 
-def test_numpy_to_image():
-    def to_image(dtype, bands=1, boolean=0):
+def test_numpy_to_image() -> None:
+    def to_image(dtype: npt.DTypeLike, bands: int = 1, boolean: int = 0) -> Image.Image:
         if bands == 1:
             if boolean:
                 data = [0, 255] * 50
@@ -80,7 +87,7 @@ def test_numpy_to_image():
 
 # Based on an erring example at
 # https://stackoverflow.com/questions/10854903/what-is-causing-dimension-dependent-attributeerror-in-pil-fromarray-function
-def test_3d_array():
+def test_3d_array() -> None:
     size = (5, TEST_IMAGE_SIZE[0], TEST_IMAGE_SIZE[1])
     a = numpy.ones(size, dtype=numpy.uint8)
     assert_image(Image.fromarray(a[1, :, :]), "L", TEST_IMAGE_SIZE)
@@ -92,29 +99,30 @@ def test_3d_array():
     assert_image(Image.fromarray(a[:, :, 1]), "L", TEST_IMAGE_SIZE)
 
 
-def test_1d_array():
+def test_1d_array() -> None:
     a = numpy.ones(5, dtype=numpy.uint8)
     assert_image(Image.fromarray(a), "L", (1, 5))
 
 
-def _test_img_equals_nparray(img, np):
-    assert len(np.shape) >= 2
-    np_size = np.shape[1], np.shape[0]
+def _test_img_equals_nparray(img: Image.Image, np_img: _typing.NumpyArray) -> None:
+    assert len(np_img.shape) >= 2
+    np_size = np_img.shape[1], np_img.shape[0]
     assert img.size == np_size
     px = img.load()
+    assert px is not None
     for x in range(0, img.size[0], int(img.size[0] / 10)):
         for y in range(0, img.size[1], int(img.size[1] / 10)):
-            assert_deep_equal(px[x, y], np[y, x])
+            assert_deep_equal(px[x, y], np_img[y, x])
 
 
-def test_16bit():
+def test_16bit() -> None:
     with Image.open("Tests/images/16bit.cropped.tif") as img:
         np_img = numpy.array(img)
         _test_img_equals_nparray(img, np_img)
     assert np_img.dtype == numpy.dtype("<u2")
 
 
-def test_1bit():
+def test_1bit() -> None:
     # Test that 1-bit arrays convert to numpy and back
     # See: https://github.com/python-pillow/Pillow/issues/350
     arr = numpy.array([[1, 0, 0, 1, 0], [0, 1, 0, 0, 0]], "u1")
@@ -124,7 +132,7 @@ def test_1bit():
     numpy.testing.assert_array_equal(arr, arr_back)
 
 
-def test_save_tiff_uint16():
+def test_save_tiff_uint16() -> None:
     # Tests that we're getting the pixel value in the right byte order.
     pixel_value = 0x1234
     a = numpy.array(
@@ -134,6 +142,7 @@ def test_save_tiff_uint16():
     img = Image.fromarray(a)
 
     img_px = img.load()
+    assert img_px is not None
     assert img_px[0, 0] == pixel_value
 
 
@@ -155,7 +164,7 @@ def test_save_tiff_uint16():
         ("HSV", numpy.uint8),
     ),
 )
-def test_to_array(mode, dtype):
+def test_to_array(mode: str, dtype: npt.DTypeLike) -> None:
     img = hopper(mode)
 
     # Resize to non-square
@@ -167,7 +176,7 @@ def test_to_array(mode, dtype):
     assert np_img.dtype == dtype
 
 
-def test_point_lut():
+def test_point_lut() -> None:
     # See https://github.com/python-pillow/Pillow/issues/439
 
     data = list(range(256)) * 3
@@ -178,7 +187,7 @@ def test_point_lut():
     im.point(lut)
 
 
-def test_putdata():
+def test_putdata() -> None:
     # Shouldn't segfault
     # See https://github.com/python-pillow/Pillow/issues/1008
 
@@ -189,6 +198,15 @@ def test_putdata():
     assert len(im.getdata()) == len(arr)
 
 
+def test_resize() -> None:
+    im = hopper()
+    size = (64, 64)
+
+    im_resized = im.resize(numpy.array(size))
+
+    assert im_resized.size == size
+
+
 @pytest.mark.parametrize(
     "dtype",
     (
@@ -205,12 +223,12 @@ def test_putdata():
         numpy.float64,
     ),
 )
-def test_roundtrip_eye(dtype):
+def test_roundtrip_eye(dtype: npt.DTypeLike) -> None:
     arr = numpy.eye(10, dtype=dtype)
     numpy.testing.assert_array_equal(arr, numpy.array(Image.fromarray(arr)))
 
 
-def test_zero_size():
+def test_zero_size() -> None:
     # Shouldn't cause floating point exception
     # See https://github.com/python-pillow/Pillow/issues/2259
 
@@ -220,13 +238,15 @@ def test_zero_size():
 
 
 @skip_unless_feature("libtiff")
-def test_load_first():
+def test_transposed() -> None:
     with Image.open("Tests/images/g4_orientation_5.tif") as im:
+        assert im.size == (590, 88)
+
         a = numpy.array(im)
         assert a.shape == (88, 590)
 
 
-def test_bool():
+def test_bool() -> None:
     # https://github.com/python-pillow/Pillow/issues/2044
     a = numpy.zeros((10, 2), dtype=bool)
     a[0][0] = True
@@ -235,7 +255,7 @@ def test_bool():
     assert im2.getdata()[0] == 255
 
 
-def test_no_resource_warning_for_numpy_array():
+def test_no_resource_warning_for_numpy_array() -> None:
     # https://github.com/python-pillow/Pillow/issues/835
     # Arrange
     from numpy import array
@@ -244,4 +264,6 @@ def test_no_resource_warning_for_numpy_array():
     with Image.open(test_file) as im:
         # Act/Assert
         with warnings.catch_warnings():
+            warnings.simplefilter("error")
+
             array(im)
diff --git a/Tests/test_pdfparser.py b/Tests/test_pdfparser.py
index 105a838d9..f6b12cb20 100644
--- a/Tests/test_pdfparser.py
+++ b/Tests/test_pdfparser.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import time
 
 import pytest
@@ -17,14 +19,14 @@ from PIL.PdfParser import (
 )
 
 
-def test_text_encode_decode():
+def test_text_encode_decode() -> None:
     assert encode_text("abc") == b"\xFE\xFF\x00a\x00b\x00c"
     assert decode_text(b"\xFE\xFF\x00a\x00b\x00c") == "abc"
     assert decode_text(b"abc") == "abc"
     assert decode_text(b"\x1B a \x1C") == "\u02D9 a \u02DD"
 
 
-def test_indirect_refs():
+def test_indirect_refs() -> None:
     assert IndirectReference(1, 2) == IndirectReference(1, 2)
     assert IndirectReference(1, 2) != IndirectReference(1, 3)
     assert IndirectReference(1, 2) != IndirectObjectDef(1, 2)
@@ -35,7 +37,7 @@ def test_indirect_refs():
     assert IndirectObjectDef(1, 2) != (1, 2)
 
 
-def test_parsing():
+def test_parsing() -> None:
     assert PdfParser.interpret_name(b"Name#23Hash") == b"Name#Hash"
     assert PdfParser.interpret_name(b"Name#23Hash", as_text=True) == "Name#Hash"
     assert PdfParser.get_value(b"1 2 R ", 0) == (IndirectReference(1, 2), 5)
@@ -93,7 +95,7 @@ def test_parsing():
             assert time.strftime("%Y%m%d%H%M%S", getattr(d, name)) == value
 
 
-def test_pdf_repr():
+def test_pdf_repr() -> None:
     assert bytes(IndirectReference(1, 2)) == b"1 2 R"
     assert bytes(IndirectObjectDef(*IndirectReference(1, 2))) == b"1 2 obj"
     assert bytes(PdfName(b"Name#Hash")) == b"/Name#23Hash"
@@ -119,7 +121,7 @@ def test_pdf_repr():
     assert pdf_repr(PdfBinary(b"\x90\x1F\xA0")) == b"<901FA0>"
 
 
-def test_duplicate_xref_entry():
+def test_duplicate_xref_entry() -> None:
     pdf = PdfParser("Tests/images/duplicate_xref_entry.pdf")
     assert pdf.xref_table.existing_entries[6][0] == 1197
     pdf.close()
diff --git a/Tests/test_pickle.py b/Tests/test_pickle.py
index 2f6d05888..d250ba369 100644
--- a/Tests/test_pickle.py
+++ b/Tests/test_pickle.py
@@ -1,4 +1,7 @@
+from __future__ import annotations
+
 import pickle
+from pathlib import Path
 
 import pytest
 
@@ -10,7 +13,9 @@ FONT_SIZE = 20
 FONT_PATH = "Tests/fonts/DejaVuSans/DejaVuSans.ttf"
 
 
-def helper_pickle_file(tmp_path, pickle, protocol, test_file, mode):
+def helper_pickle_file(
+    tmp_path: Path, protocol: int, test_file: str, mode: str | None
+) -> None:
     # Arrange
     with Image.open(test_file) as im:
         filename = str(tmp_path / "temp.pkl")
@@ -27,7 +32,7 @@ def helper_pickle_file(tmp_path, pickle, protocol, test_file, mode):
         assert im == loaded_im
 
 
-def helper_pickle_string(pickle, protocol, test_file, mode):
+def helper_pickle_string(protocol: int, test_file: str, mode: str | None) -> None:
     with Image.open(test_file) as im:
         if mode:
             im = im.convert(mode)
@@ -41,7 +46,7 @@ def helper_pickle_string(pickle, protocol, test_file, mode):
 
 
 @pytest.mark.parametrize(
-    ("test_file", "test_mode"),
+    "test_file, test_mode",
     [
         ("Tests/images/hopper.jpg", None),
         ("Tests/images/hopper.jpg", "L"),
@@ -51,23 +56,25 @@ def helper_pickle_string(pickle, protocol, test_file, mode):
         ),
         ("Tests/images/hopper.tif", None),
         ("Tests/images/test-card.png", None),
-        ("Tests/images/zero_bb.png", None),
-        ("Tests/images/zero_bb_scale2.png", None),
-        ("Tests/images/non_zero_bb.png", None),
-        ("Tests/images/non_zero_bb_scale2.png", None),
+        ("Tests/images/eps/zero_bb.png", None),
+        ("Tests/images/eps/zero_bb_scale2.png", None),
+        ("Tests/images/eps/non_zero_bb.png", None),
+        ("Tests/images/eps/non_zero_bb_scale2.png", None),
         ("Tests/images/p_trns_single.png", None),
         ("Tests/images/pil123p.png", None),
         ("Tests/images/itxt_chunks.png", None),
     ],
 )
 @pytest.mark.parametrize("protocol", range(0, pickle.HIGHEST_PROTOCOL + 1))
-def test_pickle_image(tmp_path, test_file, test_mode, protocol):
+def test_pickle_image(
+    tmp_path: Path, test_file: str, test_mode: str | None, protocol: int
+) -> None:
     # Act / Assert
-    helper_pickle_string(pickle, protocol, test_file, test_mode)
-    helper_pickle_file(tmp_path, pickle, protocol, test_file, test_mode)
+    helper_pickle_string(protocol, test_file, test_mode)
+    helper_pickle_file(tmp_path, protocol, test_file, test_mode)
 
 
-def test_pickle_la_mode_with_palette(tmp_path):
+def test_pickle_la_mode_with_palette(tmp_path: Path) -> None:
     # Arrange
     filename = str(tmp_path / "temp.pkl")
     with Image.open("Tests/images/hopper.jpg") as im:
@@ -75,18 +82,18 @@ def test_pickle_la_mode_with_palette(tmp_path):
 
     # Act / Assert
     for protocol in range(0, pickle.HIGHEST_PROTOCOL + 1):
-        im.mode = "LA"
+        im._mode = "LA"
         with open(filename, "wb") as f:
             pickle.dump(im, f, protocol)
         with open(filename, "rb") as f:
             loaded_im = pickle.load(f)
 
-        im.mode = "PA"
+        im._mode = "PA"
         assert im == loaded_im
 
 
 @skip_unless_feature("webp")
-def test_pickle_tell():
+def test_pickle_tell() -> None:
     # Arrange
     with Image.open("Tests/images/hopper.webp") as image:
         # Act: roundtrip
@@ -96,7 +103,9 @@ def test_pickle_tell():
     assert unpickled_image.tell() == 0
 
 
-def helper_assert_pickled_font_images(font1, font2):
+def helper_assert_pickled_font_images(
+    font1: ImageFont.FreeTypeFont, font2: ImageFont.FreeTypeFont
+) -> None:
     # Arrange
     im1 = Image.new(mode="RGBA", size=(300, 100))
     im2 = Image.new(mode="RGBA", size=(300, 100))
@@ -112,8 +121,9 @@ def helper_assert_pickled_font_images(font1, font2):
     assert_image_equal(im1, im2)
 
 
+@skip_unless_feature("freetype2")
 @pytest.mark.parametrize("protocol", list(range(0, pickle.HIGHEST_PROTOCOL + 1)))
-def test_pickle_font_string(protocol):
+def test_pickle_font_string(protocol: int) -> None:
     # Arrange
     font = ImageFont.truetype(FONT_PATH, FONT_SIZE)
 
@@ -125,8 +135,9 @@ def test_pickle_font_string(protocol):
     helper_assert_pickled_font_images(font, unpickled_font)
 
 
+@skip_unless_feature("freetype2")
 @pytest.mark.parametrize("protocol", list(range(0, pickle.HIGHEST_PROTOCOL + 1)))
-def test_pickle_font_file(tmp_path, protocol):
+def test_pickle_font_file(tmp_path: Path, protocol: int) -> None:
     # Arrange
     font = ImageFont.truetype(FONT_PATH, FONT_SIZE)
     filename = str(tmp_path / "temp.pkl")
diff --git a/Tests/test_psdraw.py b/Tests/test_psdraw.py
index e74d79828..a743d831f 100644
--- a/Tests/test_psdraw.py
+++ b/Tests/test_psdraw.py
@@ -1,13 +1,14 @@
+from __future__ import annotations
+
 import os
 import sys
 from io import BytesIO
-
-import pytest
+from pathlib import Path
 
 from PIL import Image, PSDraw
 
 
-def _create_document(ps):
+def _create_document(ps: PSDraw.PSDraw) -> None:
     title = "hopper"
     box = (1 * 72, 2 * 72, 7 * 72, 10 * 72)  # in points
 
@@ -29,7 +30,7 @@ def _create_document(ps):
     ps.end_document()
 
 
-def test_draw_postscript(tmp_path):
+def test_draw_postscript(tmp_path: Path) -> None:
     # Based on Pillow tutorial, but there is no textsize:
     # https://pillow.readthedocs.io/en/latest/handbook/tutorial.html#drawing-postscript
 
@@ -46,19 +47,14 @@ def test_draw_postscript(tmp_path):
     assert os.path.getsize(tempfile) > 0
 
 
-@pytest.mark.parametrize("buffer", (True, False))
-def test_stdout(buffer):
+def test_stdout() -> None:
     # Temporarily redirect stdout
     old_stdout = sys.stdout
 
-    if buffer:
+    class MyStdOut:
+        buffer = BytesIO()
 
-        class MyStdOut:
-            buffer = BytesIO()
-
-        mystdout = MyStdOut()
-    else:
-        mystdout = BytesIO()
+    mystdout = MyStdOut()
 
     sys.stdout = mystdout
 
@@ -68,6 +64,4 @@ def test_stdout(buffer):
     # Reset stdout
     sys.stdout = old_stdout
 
-    if buffer:
-        mystdout = mystdout.buffer
-    assert mystdout.getvalue() != b""
+    assert mystdout.buffer.getvalue() != b""
diff --git a/Tests/test_pyroma.py b/Tests/test_pyroma.py
index aa05c2cfd..c2f7fe22e 100644
--- a/Tests/test_pyroma.py
+++ b/Tests/test_pyroma.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import __version__
@@ -5,7 +7,7 @@ from PIL import __version__
 pyroma = pytest.importorskip("pyroma", reason="Pyroma not installed")
 
 
-def test_pyroma():
+def test_pyroma() -> None:
     # Arrange
     data = pyroma.projectdata.get_data(".")
 
diff --git a/Tests/test_qt_image_qapplication.py b/Tests/test_qt_image_qapplication.py
index 5d2e41212..0ed9fbfa5 100644
--- a/Tests/test_qt_image_qapplication.py
+++ b/Tests/test_qt_image_qapplication.py
@@ -1,9 +1,28 @@
+from __future__ import annotations
+
+from pathlib import Path
+from typing import TYPE_CHECKING, Union
+
 import pytest
 
-from PIL import ImageQt
+from PIL import Image, ImageQt
 
 from .helper import assert_image_equal_tofile, assert_image_similar, hopper
 
+if TYPE_CHECKING:
+    import PyQt6
+    import PySide6
+
+    QApplication = Union[PyQt6.QtWidgets.QApplication, PySide6.QtWidgets.QApplication]
+    QHBoxLayout = Union[PyQt6.QtWidgets.QHBoxLayout, PySide6.QtWidgets.QHBoxLayout]
+    QImage = Union[PyQt6.QtGui.QImage, PySide6.QtGui.QImage]
+    QLabel = Union[PyQt6.QtWidgets.QLabel, PySide6.QtWidgets.QLabel]
+    QPainter = Union[PyQt6.QtGui.QPainter, PySide6.QtGui.QPainter]
+    QPixmap = Union[PyQt6.QtGui.QPixmap, PySide6.QtGui.QPixmap]
+    QPoint = Union[PyQt6.QtCore.QPoint, PySide6.QtCore.QPoint]
+    QRegion = Union[PyQt6.QtGui.QRegion, PySide6.QtGui.QRegion]
+    QWidget = Union[PyQt6.QtWidgets.QWidget, PySide6.QtWidgets.QWidget]
+
 if ImageQt.qt_is_installed:
     from PIL.ImageQt import QPixmap
 
@@ -16,33 +35,34 @@ if ImageQt.qt_is_installed:
         from PySide6.QtGui import QImage, QPainter, QRegion
         from PySide6.QtWidgets import QApplication, QHBoxLayout, QLabel, QWidget
 
-    class Example(QWidget):
-        def __init__(self):
+    class Example(QWidget):  # type: ignore[misc]
+        def __init__(self) -> None:
             super().__init__()
 
             img = hopper().resize((1000, 1000))
 
             qimage = ImageQt.ImageQt(img)
 
-            pixmap1 = ImageQt.QPixmap.fromImage(qimage)
+            pixmap1 = getattr(ImageQt.QPixmap, "fromImage")(qimage)
 
-            QHBoxLayout(self)  # hbox
+            # hbox
+            QHBoxLayout(self)  # type: ignore[operator]
 
-            lbl = QLabel(self)
+            lbl = QLabel(self)  # type: ignore[operator]
             # Segfault in the problem
             lbl.setPixmap(pixmap1.copy())
 
 
-def roundtrip(expected):
+def roundtrip(expected: Image.Image) -> None:
     result = ImageQt.fromqpixmap(ImageQt.toqpixmap(expected))
     # Qt saves all pixmaps as rgb
     assert_image_similar(result, expected.convert("RGB"), 1)
 
 
 @pytest.mark.skipif(not ImageQt.qt_is_installed, reason="Qt bindings are not installed")
-def test_sanity(tmp_path):
+def test_sanity(tmp_path: Path) -> None:
     # Segfault test
-    app = QApplication([])
+    app: QApplication | None = QApplication([])  # type: ignore[operator]
     ex = Example()
     assert app  # Silence warning
     assert ex  # Silence warning
@@ -52,7 +72,7 @@ def test_sanity(tmp_path):
         im = hopper(mode)
         data = ImageQt.toqpixmap(im)
 
-        assert isinstance(data, QPixmap)
+        assert data.__class__.__name__ == "QPixmap"
         assert not data.isNull()
 
         # Test saving the file
@@ -60,14 +80,14 @@ def test_sanity(tmp_path):
         data.save(tempfile)
 
         # Render the image
-        qimage = ImageQt.ImageQt(im)
-        data = QPixmap.fromImage(qimage)
-        qt_format = QImage.Format if ImageQt.qt_version == "6" else QImage
-        qimage = QImage(128, 128, qt_format.Format_ARGB32)
-        painter = QPainter(qimage)
-        image_label = QLabel()
+        imageqt = ImageQt.ImageQt(im)
+        data = getattr(QPixmap, "fromImage")(imageqt)
+        qt_format = getattr(QImage, "Format") if ImageQt.qt_version == "6" else QImage
+        qimage = QImage(128, 128, getattr(qt_format, "Format_ARGB32"))  # type: ignore[operator]
+        painter = QPainter(qimage)  # type: ignore[operator]
+        image_label = QLabel()  # type: ignore[operator]
         image_label.setPixmap(data)
-        image_label.render(painter, QPoint(0, 0), QRegion(0, 0, 128, 128))
+        image_label.render(painter, QPoint(0, 0), QRegion(0, 0, 128, 128))  # type: ignore[operator]
         painter.end()
         rendered_tempfile = str(tmp_path / f"temp_rendered_{mode}.png")
         qimage.save(rendered_tempfile)
diff --git a/Tests/test_qt_image_toqimage.py b/Tests/test_qt_image_toqimage.py
index 95c13ba75..8cb7ffb9b 100644
--- a/Tests/test_qt_image_toqimage.py
+++ b/Tests/test_qt_image_toqimage.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+from pathlib import Path
+
 import pytest
 
 from PIL import ImageQt
@@ -13,11 +17,11 @@ if ImageQt.qt_is_installed:
 
 
 @pytest.mark.parametrize("mode", ("RGB", "RGBA", "L", "P", "1"))
-def test_sanity(mode, tmp_path):
+def test_sanity(mode: str, tmp_path: Path) -> None:
     src = hopper(mode)
     data = ImageQt.toqimage(src)
 
-    assert isinstance(data, QImage)
+    assert isinstance(data, QImage)  # type: ignore[arg-type, misc]
     assert not data.isNull()
 
     # reload directly from the qimage
diff --git a/Tests/test_sgi_crash.py b/Tests/test_sgi_crash.py
index b5f9d4424..3ce31cd2d 100644
--- a/Tests/test_sgi_crash.py
+++ b/Tests/test_sgi_crash.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from PIL import Image
@@ -19,7 +21,7 @@ from PIL import Image
         "Tests/images/crash-db8bfa78b19721225425530c5946217720d7df4e.sgi",
     ],
 )
-def test_crashes(test_file):
+def test_crashes(test_file: str) -> None:
     with open(test_file, "rb") as f:
         with Image.open(f) as im:
             with pytest.raises(OSError):
diff --git a/Tests/test_shell_injection.py b/Tests/test_shell_injection.py
index d25d42dfc..dd4fc46c3 100644
--- a/Tests/test_shell_injection.py
+++ b/Tests/test_shell_injection.py
@@ -1,4 +1,9 @@
+from __future__ import annotations
+
 import shutil
+from io import BytesIO
+from pathlib import Path
+from typing import IO, Callable
 
 import pytest
 
@@ -14,16 +19,21 @@ test_filenames = ("temp_';", 'temp_";', "temp_'\"|", "temp_'\"||", "temp_'\"&&")
 
 @pytest.mark.skipif(is_win32(), reason="Requires Unix or macOS")
 class TestShellInjection:
-    def assert_save_filename_check(self, tmp_path, src_img, save_func):
+    def assert_save_filename_check(
+        self,
+        tmp_path: Path,
+        src_img: Image.Image,
+        save_func: Callable[[Image.Image, IO[bytes], str | bytes], None],
+    ) -> None:
         for filename in test_filenames:
             dest_file = str(tmp_path / filename)
-            save_func(src_img, 0, dest_file)
+            save_func(src_img, BytesIO(), dest_file)
             # If file can't be opened, shell injection probably occurred
             with Image.open(dest_file) as im:
                 im.load()
 
     @pytest.mark.skipif(not djpeg_available(), reason="djpeg not available")
-    def test_load_djpeg_filename(self, tmp_path):
+    def test_load_djpeg_filename(self, tmp_path: Path) -> None:
         for filename in test_filenames:
             src_file = str(tmp_path / filename)
             shutil.copy(TEST_JPG, src_file)
@@ -32,18 +42,18 @@ class TestShellInjection:
                 im.load_djpeg()
 
     @pytest.mark.skipif(not cjpeg_available(), reason="cjpeg not available")
-    def test_save_cjpeg_filename(self, tmp_path):
+    def test_save_cjpeg_filename(self, tmp_path: Path) -> None:
         with Image.open(TEST_JPG) as im:
             self.assert_save_filename_check(tmp_path, im, JpegImagePlugin._save_cjpeg)
 
     @pytest.mark.skipif(not netpbm_available(), reason="Netpbm not available")
-    def test_save_netpbm_filename_bmp_mode(self, tmp_path):
+    def test_save_netpbm_filename_bmp_mode(self, tmp_path: Path) -> None:
         with Image.open(TEST_GIF) as im:
             im = im.convert("RGB")
             self.assert_save_filename_check(tmp_path, im, GifImagePlugin._save_netpbm)
 
     @pytest.mark.skipif(not netpbm_available(), reason="Netpbm not available")
-    def test_save_netpbm_filename_l_mode(self, tmp_path):
+    def test_save_netpbm_filename_l_mode(self, tmp_path: Path) -> None:
         with Image.open(TEST_GIF) as im:
             im = im.convert("L")
             self.assert_save_filename_check(tmp_path, im, GifImagePlugin._save_netpbm)
diff --git a/Tests/test_tiff_crashes.py b/Tests/test_tiff_crashes.py
index 143765b8e..073e5415c 100644
--- a/Tests/test_tiff_crashes.py
+++ b/Tests/test_tiff_crashes.py
@@ -10,6 +10,7 @@
 # the output should be empty. There may be Python issues
 # in the valgrind especially if run in a debug Python
 # version.
+from __future__ import annotations
 
 import pytest
 
@@ -41,14 +42,13 @@ from .helper import on_ci
 @pytest.mark.filterwarnings("ignore:Possibly corrupt EXIF data")
 @pytest.mark.filterwarnings("ignore:Metadata warning")
 @pytest.mark.filterwarnings("ignore:Truncated File Read")
-def test_tiff_crashes(test_file):
+def test_tiff_crashes(test_file: str) -> None:
     try:
         with Image.open(test_file) as im:
             im.load()
     except FileNotFoundError:
-        if not on_ci():
-            pytest.skip("test image not found")
-            return
-        raise
+        if on_ci():
+            raise
+        pytest.skip("test image not found")
     except OSError:
         pass
diff --git a/Tests/test_tiff_ifdrational.py b/Tests/test_tiff_ifdrational.py
index 6e3fcec90..13f1f9c80 100644
--- a/Tests/test_tiff_ifdrational.py
+++ b/Tests/test_tiff_ifdrational.py
@@ -1,19 +1,28 @@
-from fractions import Fraction
+from __future__ import annotations
 
-from PIL import Image, TiffImagePlugin, features
+from fractions import Fraction
+from pathlib import Path
+
+import pytest
+
+from PIL import Image, TiffImagePlugin
 from PIL.TiffImagePlugin import IFDRational
 
-from .helper import hopper
+from .helper import hopper, skip_unless_feature
 
 
-def _test_equal(num, denom, target):
+def _test_equal(
+    num: float | Fraction | IFDRational,
+    denom: int,
+    target: float | Fraction | IFDRational,
+) -> None:
     t = IFDRational(num, denom)
 
     assert target == t
     assert t == target
 
 
-def test_sanity():
+def test_sanity() -> None:
     _test_equal(1, 1, 1)
     _test_equal(1, 1, Fraction(1, 1))
 
@@ -29,13 +38,13 @@ def test_sanity():
     _test_equal(7, 5, 1.4)
 
 
-def test_ranges():
+def test_ranges() -> None:
     for num in range(1, 10):
         for denom in range(1, 10):
             assert IFDRational(num, denom) == IFDRational(num, denom)
 
 
-def test_nonetype():
+def test_nonetype() -> None:
     # Fails if the _delegate function doesn't return a valid function
 
     xres = IFDRational(72)
@@ -45,22 +54,22 @@ def test_nonetype():
     assert xres.denominator is not None
     assert yres._val is not None
 
-    assert xres and 1
-    assert xres and yres
+    assert xres
+    assert yres
 
 
-def test_ifd_rational_save(tmp_path):
-    methods = (True, False)
-    if not features.check("libtiff"):
-        methods = (False,)
+@pytest.mark.parametrize(
+    "libtiff", (pytest.param(True, marks=skip_unless_feature("libtiff")), False)
+)
+def test_ifd_rational_save(
+    monkeypatch: pytest.MonkeyPatch, tmp_path: Path, libtiff: bool
+) -> None:
+    im = hopper()
+    out = str(tmp_path / "temp.tiff")
+    res = IFDRational(301, 1)
 
-    for libtiff in methods:
-        TiffImagePlugin.WRITE_LIBTIFF = libtiff
+    monkeypatch.setattr(TiffImagePlugin, "WRITE_LIBTIFF", libtiff)
+    im.save(out, dpi=(res, res), compression="raw")
 
-        im = hopper()
-        out = str(tmp_path / "temp.tiff")
-        res = IFDRational(301, 1)
-        im.save(out, dpi=(res, res), compression="raw")
-
-        with Image.open(out) as reloaded:
-            assert float(IFDRational(301, 1)) == float(reloaded.tag_v2[282])
+    with Image.open(out) as reloaded:
+        assert float(IFDRational(301, 1)) == float(reloaded.tag_v2[282])
diff --git a/Tests/test_uploader.py b/Tests/test_uploader.py
index 720926e53..d55ceb4be 100644
--- a/Tests/test_uploader.py
+++ b/Tests/test_uploader.py
@@ -1,13 +1,15 @@
+from __future__ import annotations
+
 from .helper import assert_image_equal, assert_image_similar, hopper
 
 
-def check_upload_equal():
+def check_upload_equal() -> None:
     result = hopper("P").convert("RGB")
     target = hopper("RGB")
     assert_image_equal(result, target)
 
 
-def check_upload_similar():
+def check_upload_similar() -> None:
     result = hopper("P").convert("RGB")
     target = hopper("RGB")
     assert_image_similar(result, target, 0)
diff --git a/Tests/test_util.py b/Tests/test_util.py
index 9efbdd1f3..9eaabf18a 100644
--- a/Tests/test_util.py
+++ b/Tests/test_util.py
@@ -1,25 +1,16 @@
+from __future__ import annotations
+
+from pathlib import Path, PurePath
+
 import pytest
 
 from PIL import _util
 
 
-def test_is_path():
-    # Arrange
-    fp = "filename.ext"
-
-    # Act
-    it_is = _util.is_path(fp)
-
-    # Assert
-    assert it_is
-
-
-def test_path_obj_is_path():
-    # Arrange
-    from pathlib import Path
-
-    test_path = Path("filename.ext")
-
+@pytest.mark.parametrize(
+    "test_path", ["filename.ext", Path("filename.ext"), PurePath("filename.ext")]
+)
+def test_is_path(test_path: str | Path | PurePath) -> None:
     # Act
     it_is = _util.is_path(test_path)
 
@@ -27,7 +18,7 @@ def test_path_obj_is_path():
     assert it_is
 
 
-def test_is_not_path(tmp_path):
+def test_is_not_path(tmp_path: Path) -> None:
     # Arrange
     with (tmp_path / "temp.ext").open("w") as fp:
         pass
@@ -39,33 +30,11 @@ def test_is_not_path(tmp_path):
     assert not it_is_not
 
 
-def test_is_directory():
-    # Arrange
-    directory = "Tests"
-
-    # Act
-    it_is = _util.is_directory(directory)
-
-    # Assert
-    assert it_is
-
-
-def test_is_not_directory():
-    # Arrange
-    text = "abc"
-
-    # Act
-    it_is_not = _util.is_directory(text)
-
-    # Assert
-    assert not it_is_not
-
-
-def test_deferred_error():
+def test_deferred_error() -> None:
     # Arrange
 
     # Act
-    thing = _util.DeferredError(ValueError("Some error text"))
+    thing = _util.DeferredError.new(ValueError("Some error text"))
 
     # Assert
     with pytest.raises(ValueError):
diff --git a/Tests/test_webp_leaks.py b/Tests/test_webp_leaks.py
index 5bd9bacdb..626fe427c 100644
--- a/Tests/test_webp_leaks.py
+++ b/Tests/test_webp_leaks.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from io import BytesIO
 
 from PIL import Image
@@ -12,11 +14,11 @@ class TestWebPLeaks(PillowLeakTestCase):
     mem_limit = 3 * 1024  # kb
     iterations = 100
 
-    def test_leak_load(self):
+    def test_leak_load(self) -> None:
         with open(test_file, "rb") as f:
             im_data = f.read()
 
-        def core():
+        def core() -> None:
             with Image.open(BytesIO(im_data)) as im:
                 im.load()
 
diff --git a/_custom_build/backend.py b/_custom_build/backend.py
old mode 100755
new mode 100644
index 9b3265a94..44ec6efe5
--- a/_custom_build/backend.py
+++ b/_custom_build/backend.py
@@ -1,6 +1,8 @@
+from __future__ import annotations
+
 import sys
 
-from setuptools.build_meta import *  # noqa: F401, F403
+from setuptools.build_meta import *  # noqa: F403
 from setuptools.build_meta import build_wheel
 
 backend_class = build_wheel.__self__.__class__
@@ -9,41 +11,12 @@ backend_class = build_wheel.__self__.__class__
 class _CustomBuildMetaBackend(backend_class):
     def run_setup(self, setup_script="setup.py"):
         if self.config_settings:
+            for key, values in self.config_settings.items():
+                if not isinstance(values, list):
+                    values = [values]
+                for value in values:
+                    sys.argv.append(f"--pillow-configuration={key}={value}")
 
-            def config_has(key, value):
-                settings = self.config_settings.get(key)
-                if settings:
-                    if not isinstance(settings, list):
-                        settings = [settings]
-                    return value in settings
-
-            flags = []
-            for dependency in (
-                "zlib",
-                "jpeg",
-                "tiff",
-                "freetype",
-                "raqm",
-                "lcms",
-                "webp",
-                "webpmux",
-                "jpeg2000",
-                "imagequant",
-                "xcb",
-            ):
-                if config_has(dependency, "enable"):
-                    flags.append("--enable-" + dependency)
-                elif config_has(dependency, "disable"):
-                    flags.append("--disable-" + dependency)
-            for dependency in ("raqm", "fribidi"):
-                if config_has(dependency, "vendor"):
-                    flags.append("--vendor-" + dependency)
-            if self.config_settings.get("platform-guessing") == "disable":
-                flags.append("--disable-platform-guessing")
-            if self.config_settings.get("debug") == "true":
-                flags.append("--debug")
-            if flags:
-                sys.argv = sys.argv[:1] + ["build_ext"] + flags + sys.argv[1:]
         return super().run_setup(setup_script)
 
     def build_wheel(
@@ -52,5 +25,15 @@ class _CustomBuildMetaBackend(backend_class):
         self.config_settings = config_settings
         return super().build_wheel(wheel_directory, config_settings, metadata_directory)
 
+    def build_editable(
+        self, wheel_directory, config_settings=None, metadata_directory=None
+    ):
+        self.config_settings = config_settings
+        return super().build_editable(
+            wheel_directory, config_settings, metadata_directory
+        )
 
-build_wheel = _CustomBuildMetaBackend().build_wheel
+
+_backend = _CustomBuildMetaBackend()
+build_wheel = _backend.build_wheel
+build_editable = _backend.build_editable
diff --git a/codecov.yml b/codecov.yml
index b794632fa..84920238f 100644
--- a/codecov.yml
+++ b/codecov.yml
@@ -1,7 +1,7 @@
 # Documentation: https://docs.codecov.com/docs/codecov-yaml
 
 codecov:
-  # Avoid "Missing base report" due to committing CHANGES.rst with "[CI skip]"
+  # Avoid "Missing base report" due to committing with "[CI skip]"
   # https://github.com/codecov/support/issues/363
   # https://docs.codecov.com/docs/comparing-commits
   allow_coverage_offsets: true
@@ -12,11 +12,10 @@ coverage:
   status:
     project:
       default:
-        threshold: 0.01%
+        threshold: 0.1%
 
 # Matches 'omit:' in .coveragerc
 ignore:
   - "Tests/32bit_segfault_check.py"
-  - "Tests/bench_cffi_access.py"
   - "Tests/check_*.py"
   - "Tests/createfontdatachunk.py"
diff --git a/conftest.py b/conftest.py
index e123cca80..4dcd5e053 100644
--- a/conftest.py
+++ b/conftest.py
@@ -1 +1,3 @@
+from __future__ import annotations
+
 pytest_plugins = ["Tests.helper"]
diff --git a/depends/download-and-extract.sh b/depends/download-and-extract.sh
index a318bfafd..04bfbc755 100755
--- a/depends/download-and-extract.sh
+++ b/depends/download-and-extract.sh
@@ -5,7 +5,7 @@ archive=$1
 url=$2
 
 if [ ! -f $archive.tar.gz ]; then
-    wget -O $archive.tar.gz $url
+    wget --no-verbose -O $archive.tar.gz $url
 fi
 
 rmdir $archive
diff --git a/depends/install_imagequant.sh b/depends/install_imagequant.sh
index fd6000ee1..8d62d5ac7 100755
--- a/depends/install_imagequant.sh
+++ b/depends/install_imagequant.sh
@@ -1,15 +1,39 @@
 #!/bin/bash
 # install libimagequant
 
-archive=libimagequant-4.2.0
+archive_name=libimagequant
+archive_version=4.3.3
 
-./download-and-extract.sh $archive https://raw.githubusercontent.com/python-pillow/pillow-depends/main/$archive.tar.gz
+archive=$archive_name-$archive_version
 
-pushd $archive/imagequant-sys
+if [[ "$GHA_LIBIMAGEQUANT_CACHE_HIT" == "true" ]]; then
 
-cargo install cargo-c
-cargo cinstall --prefix=/usr --destdir=.
-sudo cp usr/lib/libimagequant.so* /usr/lib/
-sudo cp usr/include/libimagequant.h /usr/include/
+    # Copy cached files into place
+    sudo cp ~/cache-$archive_name/libimagequant.so* /usr/lib/
+    sudo cp ~/cache-$archive_name/libimagequant.h /usr/include/
 
-popd
+else
+
+    # Build from source
+    ./download-and-extract.sh $archive https://raw.githubusercontent.com/python-pillow/pillow-depends/main/$archive.tar.gz
+
+    pushd $archive/imagequant-sys
+
+    cargo install cargo-c
+    cargo cinstall --prefix=/usr --destdir=.
+
+    # Copy into place
+    sudo find usr -name libimagequant.so* -exec cp {} /usr/lib/ \;
+    sudo cp usr/include/libimagequant.h /usr/include/
+
+    if [ -n "$GITHUB_ACTIONS" ]; then
+        # Copy to cache
+        rm -rf ~/cache-$archive_name
+        mkdir ~/cache-$archive_name
+        find usr -name libimagequant.so* -exec cp {} ~/cache-$archive_name/ \;
+        cp usr/include/libimagequant.h ~/cache-$archive_name/
+    fi
+
+    popd
+
+fi
diff --git a/depends/install_openjpeg.sh b/depends/install_openjpeg.sh
index 4f4b81a62..8c2967bc2 100755
--- a/depends/install_openjpeg.sh
+++ b/depends/install_openjpeg.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # install openjpeg
 
-archive=openjpeg-2.5.0
+archive=openjpeg-2.5.2
 
 ./download-and-extract.sh $archive https://raw.githubusercontent.com/python-pillow/pillow-depends/main/$archive.tar.gz
 
diff --git a/depends/install_raqm.sh b/depends/install_raqm.sh
index 24c1f9c30..5d862403e 100755
--- a/depends/install_raqm.sh
+++ b/depends/install_raqm.sh
@@ -2,7 +2,7 @@
 # install raqm
 
 
-archive=libraqm-0.10.1
+archive=libraqm-0.10.2
 
 ./download-and-extract.sh $archive https://raw.githubusercontent.com/python-pillow/pillow-depends/main/$archive.tar.gz
 
@@ -11,4 +11,3 @@ pushd $archive
 meson build --prefix=/usr && sudo ninja -C build install
 
 popd
-
diff --git a/depends/install_raqm_cmake.sh b/depends/install_raqm_cmake.sh
index 7d2c399df..37d9d1160 100755
--- a/depends/install_raqm_cmake.sh
+++ b/depends/install_raqm_cmake.sh
@@ -15,4 +15,3 @@ make && sudo make install
 cd ..
 
 popd
-
diff --git a/depends/install_webp.sh b/depends/install_webp.sh
index f8b985a7a..c47fb35f1 100755
--- a/depends/install_webp.sh
+++ b/depends/install_webp.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # install webp
 
-archive=libwebp-1.3.0
+archive=libwebp-1.4.0
 
 ./download-and-extract.sh $archive https://raw.githubusercontent.com/python-pillow/pillow-depends/main/$archive.tar.gz
 
diff --git a/depends/termux.sh b/depends/termux.sh
index 1acc09c44..d437029fd 100755
--- a/depends/termux.sh
+++ b/depends/termux.sh
@@ -2,4 +2,3 @@
 
 pkg install -y python ndk-sysroot clang make \
     libjpeg-turbo
-
diff --git a/docs/COPYING b/docs/COPYING
index bc44ba388..d5ee19f81 100644
--- a/docs/COPYING
+++ b/docs/COPYING
@@ -1,11 +1,11 @@
 The Python Imaging Library (PIL) is
 
     Copyright © 1997-2011 by Secret Labs AB
-    Copyright © 1995-2011 by Fredrik Lundh
+    Copyright © 1995-2011 by Fredrik Lundh and contributors
 
 Pillow is the friendly PIL fork. It is
 
-    Copyright © 2010-2023 by Jeffrey A. Clark (Alex) and contributors
+    Copyright © 2010-2024 by Jeffrey A. Clark and contributors
 
 Like PIL, Pillow is licensed under the open source PIL
 Software License:
diff --git a/docs/Guardfile b/docs/Guardfile
index 6cbf07b06..16a891a73 100755
--- a/docs/Guardfile
+++ b/docs/Guardfile
@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+from __future__ import annotations
+
 from livereload.compiler import shell
 from livereload.task import Task
 
diff --git a/docs/Makefile b/docs/Makefile
index 3b4deb9bf..e90af0519 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -9,9 +9,9 @@ PAPER         =
 BUILDDIR      = _build
 
 # Internal variables.
-PAPEROPT_a4     = -D latex_paper_size=a4
-PAPEROPT_letter = -D latex_paper_size=letter
-ALLSPHINXOPTS   = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
+PAPEROPT_a4     = --define latex_paper_size=a4
+PAPEROPT_letter = --define latex_paper_size=letter
+ALLSPHINXOPTS   = --doctree-dir $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
 # the i18n builder cannot share the environment and doctrees with the others
 I18NSPHINXOPTS  = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
 
@@ -46,47 +46,47 @@ clean:
 	-rm -rf $(BUILDDIR)/*
 
 install-sphinx:
-	$(PYTHON) -m pip install --quiet furo olefile sphinx sphinx-copybutton sphinx-inline-tabs sphinx-removed-in sphinxext-opengraph
+	$(PYTHON) -m pip install -e ..[docs]
 
 .PHONY: html
 html:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b html -W --keep-going $(ALLSPHINXOPTS) $(BUILDDIR)/html
+	$(SPHINXBUILD) --builder html --fail-on-warning --keep-going $(ALLSPHINXOPTS) $(BUILDDIR)/html
 	@echo
 	@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
 
 .PHONY: dirhtml
 dirhtml:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
+	$(SPHINXBUILD) --builder dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
 	@echo
 	@echo "Build finished. The HTML pages are in $(BUILDDIR)/dirhtml."
 
 .PHONY: singlehtml
 singlehtml:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b singlehtml $(ALLSPHINXOPTS) $(BUILDDIR)/singlehtml
+	$(SPHINXBUILD) --builder singlehtml $(ALLSPHINXOPTS) $(BUILDDIR)/singlehtml
 	@echo
 	@echo "Build finished. The HTML page is in $(BUILDDIR)/singlehtml."
 
 .PHONY: pickle
 pickle:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b pickle $(ALLSPHINXOPTS) $(BUILDDIR)/pickle
+	$(SPHINXBUILD) --builder pickle $(ALLSPHINXOPTS) $(BUILDDIR)/pickle
 	@echo
 	@echo "Build finished; now you can process the pickle files."
 
 .PHONY: json
 json:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b json $(ALLSPHINXOPTS) $(BUILDDIR)/json
+	$(SPHINXBUILD) --builder json $(ALLSPHINXOPTS) $(BUILDDIR)/json
 	@echo
 	@echo "Build finished; now you can process the JSON files."
 
 .PHONY: htmlhelp
 htmlhelp:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b htmlhelp $(ALLSPHINXOPTS) $(BUILDDIR)/htmlhelp
+	$(SPHINXBUILD) --builder htmlhelp $(ALLSPHINXOPTS) $(BUILDDIR)/htmlhelp
 	@echo
 	@echo "Build finished; now you can run HTML Help Workshop with the" \
 	      ".hhp project file in $(BUILDDIR)/htmlhelp."
@@ -94,7 +94,7 @@ htmlhelp:
 .PHONY: qthelp
 qthelp:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b qthelp $(ALLSPHINXOPTS) $(BUILDDIR)/qthelp
+	$(SPHINXBUILD) --builder qthelp $(ALLSPHINXOPTS) $(BUILDDIR)/qthelp
 	@echo
 	@echo "Build finished; now you can run "qcollectiongenerator" with the" \
 	      ".qhcp project file in $(BUILDDIR)/qthelp, like this:"
@@ -105,7 +105,7 @@ qthelp:
 .PHONY: devhelp
 devhelp:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b devhelp $(ALLSPHINXOPTS) $(BUILDDIR)/devhelp
+	$(SPHINXBUILD) --builder devhelp $(ALLSPHINXOPTS) $(BUILDDIR)/devhelp
 	@echo
 	@echo "Build finished."
 	@echo "To view the help file:"
@@ -116,14 +116,14 @@ devhelp:
 .PHONY: epub
 epub:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b epub $(ALLSPHINXOPTS) $(BUILDDIR)/epub
+	$(SPHINXBUILD) --builder epub $(ALLSPHINXOPTS) $(BUILDDIR)/epub
 	@echo
 	@echo "Build finished. The epub file is in $(BUILDDIR)/epub."
 
 .PHONY: latex
 latex:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+	$(SPHINXBUILD) --builder latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
 	@echo
 	@echo "Build finished; the LaTeX files are in $(BUILDDIR)/latex."
 	@echo "Run \`make' in that directory to run these through (pdf)latex" \
@@ -132,7 +132,7 @@ latex:
 .PHONY: latexpdf
 latexpdf:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+	$(SPHINXBUILD) --builder latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
 	@echo "Running LaTeX files through pdflatex..."
 	$(MAKE) -C $(BUILDDIR)/latex all-pdf
 	@echo "pdflatex finished; the PDF files are in $(BUILDDIR)/latex."
@@ -140,21 +140,21 @@ latexpdf:
 .PHONY: text
 text:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b text $(ALLSPHINXOPTS) $(BUILDDIR)/text
+	$(SPHINXBUILD) --builder text $(ALLSPHINXOPTS) $(BUILDDIR)/text
 	@echo
 	@echo "Build finished. The text files are in $(BUILDDIR)/text."
 
 .PHONY: man
 man:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b man $(ALLSPHINXOPTS) $(BUILDDIR)/man
+	$(SPHINXBUILD) --builder man $(ALLSPHINXOPTS) $(BUILDDIR)/man
 	@echo
 	@echo "Build finished. The manual pages are in $(BUILDDIR)/man."
 
 .PHONY: texinfo
 texinfo:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
+	$(SPHINXBUILD) --builder texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
 	@echo
 	@echo "Build finished. The Texinfo files are in $(BUILDDIR)/texinfo."
 	@echo "Run \`make' in that directory to run these through makeinfo" \
@@ -163,7 +163,7 @@ texinfo:
 .PHONY: info
 info:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
+	$(SPHINXBUILD) --builder texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
 	@echo "Running Texinfo files through makeinfo..."
 	make -C $(BUILDDIR)/texinfo info
 	@echo "makeinfo finished; the Info files are in $(BUILDDIR)/texinfo."
@@ -171,21 +171,21 @@ info:
 .PHONY: gettext
 gettext:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b gettext $(I18NSPHINXOPTS) $(BUILDDIR)/locale
+	$(SPHINXBUILD) --builder gettext $(I18NSPHINXOPTS) $(BUILDDIR)/locale
 	@echo
 	@echo "Build finished. The message catalogs are in $(BUILDDIR)/locale."
 
 .PHONY: changes
 changes:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b changes $(ALLSPHINXOPTS) $(BUILDDIR)/changes
+	$(SPHINXBUILD) --builder changes $(ALLSPHINXOPTS) $(BUILDDIR)/changes
 	@echo
 	@echo "The overview file is in $(BUILDDIR)/changes."
 
 .PHONY: linkcheck
 linkcheck:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b linkcheck $(ALLSPHINXOPTS) $(BUILDDIR)/linkcheck -j auto
+	$(SPHINXBUILD) --builder linkcheck $(ALLSPHINXOPTS) $(BUILDDIR)/linkcheck -j auto
 	@echo
 	@echo "Link check complete; look for any errors in the above output " \
 	      "or in $(BUILDDIR)/linkcheck/output.txt."
@@ -193,7 +193,7 @@ linkcheck:
 .PHONY: doctest
 doctest:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
+	$(SPHINXBUILD) --builder doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
 	@echo "Testing of doctests in the sources finished, look at the " \
 	      "results in $(BUILDDIR)/doctest/output.txt."
 
diff --git a/docs/PIL.rst b/docs/PIL.rst
index fa036b9cc..bdbf1373d 100644
--- a/docs/PIL.rst
+++ b/docs/PIL.rst
@@ -69,10 +69,10 @@ can be found here.
     :undoc-members:
     :show-inheritance:
 
-:mod:`~PIL.ImageTransform` Module
----------------------------------
+:mod:`~PIL.ImageMode` Module
+----------------------------
 
-.. automodule:: PIL.ImageTransform
+.. automodule:: PIL.ImageMode
     :members:
     :undoc-members:
     :show-inheritance:
diff --git a/docs/about.rst b/docs/about.rst
index 03829c133..c51ddebd0 100644
--- a/docs/about.rst
+++ b/docs/about.rst
@@ -6,25 +6,24 @@ Goals
 
 The fork author's goal is to foster and support active development of PIL through:
 
-- Continuous integration testing via `GitHub Actions`_, `AppVeyor`_ and `Travis CI`_
+- Continuous integration testing via `GitHub Actions`_ and `AppVeyor`_
 - Publicized development activity on `GitHub`_
 - Regular releases to the `Python Package Index`_
 
 .. _GitHub Actions: https://github.com/python-pillow/Pillow/actions
 .. _AppVeyor: https://ci.appveyor.com/project/Python-pillow/pillow
-.. _Travis CI: https://app.travis-ci.com/github/python-pillow/pillow-wheels
 .. _GitHub: https://github.com/python-pillow/Pillow
-.. _Python Package Index: https://pypi.org/project/Pillow/
+.. _Python Package Index: https://pypi.org/project/pillow/
 
 License
 -------
 
-Like PIL, Pillow is `licensed under the open source HPND License <https://raw.githubusercontent.com/python-pillow/Pillow/main/LICENSE>`_
+Like PIL, Pillow is `licensed under the open source MIT-CMU License <https://raw.githubusercontent.com/python-pillow/Pillow/main/LICENSE>`_
 
 Why a fork?
 -----------
 
-PIL is not setuptools compatible. Please see `this Image-SIG post`_ for a more detailed explanation. Also, PIL's current bi-yearly (or greater) release schedule is too infrequent to accommodate the large number and frequency of issues reported.
+PIL is not setuptools compatible. Please see `this Image-SIG post`_ for a more detailed explanation. Also, PIL's bi-yearly (or greater) release schedule was too infrequent to accommodate the large number and frequency of issues reported.
 
 .. _this Image-SIG post: https://mail.python.org/pipermail/image-sig/2010-August/006480.html
 
@@ -36,4 +35,4 @@ What about PIL?
     Prior to Pillow 2.0.0, very few image code changes were made. Pillow 2.0.0
     added Python 3 support and includes many bug fixes from many contributors.
 
-As more time passes since the last PIL release (1.1.7 in 2009), the likelihood of a new PIL release decreases. However, we've yet to hear an official "PIL is dead" announcement.
+The last PIL release was in 2009 (1.1.7) and `no future releases are expected <https://github.com/python-pillow/Pillow/issues/1535>`_. In January 2020, `the PyPI moderators exhausted the PEP 541 process for contacting the PIL project owner <https://github.com/python-pillow/Pillow/issues/1535#issuecomment-570308446>`_ and the `PIL project on PyPI <https://pypi.org/project/PIL>`_ was transferred to the `Pillow team <https://github.com/python-pillow/Pillow/graphs/contributors>`_. The Pillow team has no plans to update the PIL project on PyPI.
diff --git a/docs/conf.py b/docs/conf.py
index a2c825292..b81d86c6c 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -15,25 +15,26 @@
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
 # sys.path.insert(0, os.path.abspath('.'))
+from __future__ import annotations
 
 import PIL
 
 # -- General configuration ------------------------------------------------
 
 # If your documentation needs a minimal Sphinx version, state it here.
-needs_sphinx = "2.4"
+needs_sphinx = "8.1"
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
+    "dater",
     "sphinx.ext.autodoc",
     "sphinx.ext.extlinks",
     "sphinx.ext.intersphinx",
     "sphinx.ext.viewcode",
     "sphinx_copybutton",
     "sphinx_inline_tabs",
-    "sphinx_removed_in",
     "sphinxext.opengraph",
 ]
 
@@ -53,9 +54,10 @@ master_doc = "index"
 # General information about the project.
 project = "Pillow (PIL Fork)"
 copyright = (
-    "1995-2011 Fredrik Lundh, 2010-2023 Jeffrey A. Clark (Alex) and contributors"
+    "1995-2011 Fredrik Lundh and contributors, "
+    "2010-2024 Jeffrey A. Clark and contributors."
 )
-author = "Fredrik Lundh, Jeffrey A. Clark (Alex), contributors"
+author = "Fredrik Lundh (PIL), Jeffrey A. Clark (Pillow)"
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
@@ -119,7 +121,7 @@ nitpicky = True
 # generating warnings in “nitpicky mode”. Note that type should include the domain name
 # if present. Example entries would be ('py:func', 'int') or
 # ('envvar', 'LD_LIBRARY_PATH').
-# nitpick_ignore = []
+nitpick_ignore = [("py:class", "_io.BytesIO"), ("py:class", "_CmsProfileCompatible")]
 
 
 # -- Options for HTML output ----------------------------------------------
@@ -166,6 +168,12 @@ html_static_path = ["resources"]
 # directly to the root of the documentation.
 # html_extra_path = []
 
+html_css_files = ["css/dark.css"]
+
+html_js_files = [
+    "js/activate_tab.js",
+]
+
 # If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
 # using the given strftime format.
 # html_last_updated_fmt = '%b %d, %Y'
@@ -226,7 +234,7 @@ htmlhelp_basename = "PillowPILForkdoc"
 
 # -- Options for LaTeX output ---------------------------------------------
 
-latex_elements = {
+latex_elements: dict[str, str] = {
     # The paper size ('letterpaper' or 'a4paper').
     # 'papersize': 'letterpaper',
     # The font size ('10pt', '11pt' or '12pt').
@@ -245,7 +253,7 @@ latex_documents = [
         master_doc,
         "PillowPILFork.tex",
         "Pillow (PIL Fork) Documentation",
-        "Jeffrey A. Clark (Alex)",
+        "Jeffrey A. Clark",
         "manual",
     )
 ]
@@ -295,7 +303,7 @@ texinfo_documents = [
         "Pillow (PIL Fork) Documentation",
         author,
         "PillowPILFork",
-        "Pillow is the friendly PIL fork by Jeffrey A. Clark (Alex) and contributors.",
+        "Pillow is the friendly PIL fork by Jeffrey A. Clark and contributors.",
         "Miscellaneous",
     )
 ]
@@ -313,19 +321,15 @@ texinfo_documents = [
 # texinfo_no_detailmenu = False
 
 
-def setup(app):
-    app.add_css_file("css/dark.css")
-
-
 linkcheck_allowed_redirects = {
-    r"https://bestpractices.coreinfrastructure.org/projects/6331": r"https://bestpractices.coreinfrastructure.org/en/.*",  # noqa: E501
-    r"https://badges.gitter.im/python-pillow/Pillow.svg": r"https://badges.gitter.im/repo.svg",  # noqa: E501
-    r"https://gitter.im/python-pillow/Pillow?.*": r"https://app.gitter.im/#/room/#python-pillow_Pillow:gitter.im?.*",  # noqa: E501
-    r"https://pillow.readthedocs.io/?badge=latest": r"https://pillow.readthedocs.io/en/stable/?badge=latest",  # noqa: E501
+    r"https://www.bestpractices.dev/projects/6331": r"https://www.bestpractices.dev/en/.*",
+    r"https://badges.gitter.im/python-pillow/Pillow.svg": r"https://badges.gitter.im/repo.svg",
+    r"https://gitter.im/python-pillow/Pillow?.*": r"https://app.gitter.im/#/room/#python-pillow_Pillow:gitter.im?.*",
+    r"https://pillow.readthedocs.io/?badge=latest": r"https://pillow.readthedocs.io/en/stable/?badge=latest",
     r"https://pillow.readthedocs.io": r"https://pillow.readthedocs.io/en/stable/",
-    r"https://tidelift.com/badges/package/pypi/Pillow?.*": r"https://img.shields.io/badge/.*",  # noqa: E501
-    r"https://zenodo.org/badge/17549/python-pillow/Pillow.svg": r"https://zenodo.org/badge/doi/[\.0-9]+/zenodo.[0-9]+.svg",  # noqa: E501
-    r"https://zenodo.org/badge/latestdoi/17549/python-pillow/Pillow": r"https://zenodo.org/record/[0-9]+",  # noqa: E501
+    r"https://tidelift.com/badges/package/pypi/pillow?.*": r"https://img.shields.io/badge/.*",
+    r"https://zenodo.org/badge/17549/python-pillow/Pillow.svg": r"https://zenodo.org/badge/doi/[\.0-9]+/zenodo.[0-9]+.svg",
+    r"https://zenodo.org/badge/latestdoi/17549/python-pillow/Pillow": r"https://zenodo.org/record/[0-9]+",
 }
 
 # sphinx.ext.extlinks
@@ -334,10 +338,9 @@ linkcheck_allowed_redirects = {
 # https://www.sphinx-doc.org/en/master/usage/extensions/extlinks.html
 _repo = "https://github.com/python-pillow/Pillow/"
 extlinks = {
-    "cve": ("https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-%s", "CVE-%s"),
-    "cwe": ("https://cwe.mitre.org/data/definitions/%s.html", "CWE-%s"),
     "issue": (_repo + "issues/%s", "#%s"),
     "pr": (_repo + "pull/%s", "#%s"),
+    "pypi": ("https://pypi.org/project/%s/", "%s"),
 }
 
 # sphinxext.opengraph
diff --git a/docs/dater.py b/docs/dater.py
new file mode 100644
index 000000000..f9fb0c1da
--- /dev/null
+++ b/docs/dater.py
@@ -0,0 +1,48 @@
+"""
+Sphinx extension to add timestamps to release notes based on Git versions.
+
+Based on https://github.com/jaraco/rst.linker, with thanks to Jason R. Coombs.
+"""
+
+from __future__ import annotations
+
+import re
+import subprocess
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from sphinx.application import Sphinx
+
+DOC_NAME_REGEX = re.compile(r"releasenotes/\d+\.\d+\.\d+")
+VERSION_TITLE_REGEX = re.compile(r"^(\d+\.\d+\.\d+)\n-+\n")
+
+
+def get_date_for(git_version: str) -> str | None:
+    cmd = ["git", "log", "-1", "--format=%ai", git_version]
+    try:
+        out = subprocess.check_output(
+            cmd, stderr=subprocess.DEVNULL, text=True, encoding="utf-8"
+        )
+    except subprocess.CalledProcessError:
+        return None
+    return out.split()[0]
+
+
+def add_date(app: Sphinx, doc_name: str, source: list[str]) -> None:
+    if DOC_NAME_REGEX.match(doc_name) and (m := VERSION_TITLE_REGEX.match(source[0])):
+        old_title = m.group(1)
+
+        if tag_date := get_date_for(old_title):
+            new_title = f"{old_title} ({tag_date})"
+        else:
+            new_title = f"{old_title} (unreleased)"
+
+        new_underline = "-" * len(new_title)
+
+        result = source[0].replace(m.group(0), f"{new_title}\n{new_underline}\n", 1)
+        source[0] = result
+
+
+def setup(app: Sphinx) -> dict[str, bool]:
+    app.connect("source-read", add_date)
+    return {"parallel_read_safe": True}
diff --git a/docs/deprecations.rst b/docs/deprecations.rst
index 62687d869..25607e27c 100644
--- a/docs/deprecations.rst
+++ b/docs/deprecations.rst
@@ -10,17 +10,170 @@ Deprecated features
 -------------------
 
 Below are features which are considered deprecated. Where appropriate,
-a ``DeprecationWarning`` is issued.
+a :py:exc:`DeprecationWarning` is issued.
 
-PSFile
-~~~~~~
+ImageFile.raise_oserror
+~~~~~~~~~~~~~~~~~~~~~~~
 
-.. deprecated:: 9.5.0
+.. deprecated:: 10.2.0
 
-The :py:class:`~PIL.EpsImagePlugin.PSFile` class has been deprecated and will
-be removed in Pillow 11 (2024-10-15). This class was only made as a helper to
-be used internally, so there is no replacement. If you need this functionality
-though, it is a very short class that can easily be recreated in your own code.
+``ImageFile.raise_oserror()`` has been deprecated and will be removed in Pillow
+12.0.0 (2025-10-15). The function is undocumented and is only useful for translating
+error codes returned by a codec's ``decode()`` method, which ImageFile already does
+automatically.
+
+IptcImageFile helper functions
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 10.2.0
+
+The functions ``IptcImageFile.dump`` and ``IptcImageFile.i``, and the constant
+``IptcImageFile.PAD`` have been deprecated and will be removed in Pillow
+12.0.0 (2025-10-15). These are undocumented helper functions intended
+for internal use, so there is no replacement. They can each be replaced
+by a single line of code using builtin functions in Python.
+
+ImageCms constants and versions() function
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 10.3.0
+
+A number of constants and a function in :py:mod:`.ImageCms` have been deprecated.
+This includes a table of flags based on LittleCMS version 1 which has been
+replaced with a new class :py:class:`.ImageCms.Flags` based on LittleCMS 2 flags.
+
+============================================  ====================================================
+Deprecated                                    Use instead
+============================================  ====================================================
+``ImageCms.DESCRIPTION``                      No replacement
+``ImageCms.VERSION``                          ``PIL.__version__``
+``ImageCms.FLAGS["MATRIXINPUT"]``             :py:attr:`.ImageCms.Flags.CLUT_POST_LINEARIZATION`
+``ImageCms.FLAGS["MATRIXOUTPUT"]``            :py:attr:`.ImageCms.Flags.FORCE_CLUT`
+``ImageCms.FLAGS["MATRIXONLY"]``              No replacement
+``ImageCms.FLAGS["NOWHITEONWHITEFIXUP"]``     :py:attr:`.ImageCms.Flags.NOWHITEONWHITEFIXUP`
+``ImageCms.FLAGS["NOPRELINEARIZATION"]``      :py:attr:`.ImageCms.Flags.CLUT_PRE_LINEARIZATION`
+``ImageCms.FLAGS["GUESSDEVICECLASS"]``        :py:attr:`.ImageCms.Flags.GUESSDEVICECLASS`
+``ImageCms.FLAGS["NOTCACHE"]``                :py:attr:`.ImageCms.Flags.NOCACHE`
+``ImageCms.FLAGS["NOTPRECALC"]``              :py:attr:`.ImageCms.Flags.NOOPTIMIZE`
+``ImageCms.FLAGS["NULLTRANSFORM"]``           :py:attr:`.ImageCms.Flags.NULLTRANSFORM`
+``ImageCms.FLAGS["HIGHRESPRECALC"]``          :py:attr:`.ImageCms.Flags.HIGHRESPRECALC`
+``ImageCms.FLAGS["LOWRESPRECALC"]``           :py:attr:`.ImageCms.Flags.LOWRESPRECALC`
+``ImageCms.FLAGS["GAMUTCHECK"]``              :py:attr:`.ImageCms.Flags.GAMUTCHECK`
+``ImageCms.FLAGS["WHITEBLACKCOMPENSATION"]``  :py:attr:`.ImageCms.Flags.BLACKPOINTCOMPENSATION`
+``ImageCms.FLAGS["BLACKPOINTCOMPENSATION"]``  :py:attr:`.ImageCms.Flags.BLACKPOINTCOMPENSATION`
+``ImageCms.FLAGS["SOFTPROOFING"]``            :py:attr:`.ImageCms.Flags.SOFTPROOFING`
+``ImageCms.FLAGS["PRESERVEBLACK"]``           :py:attr:`.ImageCms.Flags.NONEGATIVES`
+``ImageCms.FLAGS["NODEFAULTRESOURCEDEF"]``    :py:attr:`.ImageCms.Flags.NODEFAULTRESOURCEDEF`
+``ImageCms.FLAGS["GRIDPOINTS"]``              :py:attr:`.ImageCms.Flags.GRIDPOINTS()`
+``ImageCms.versions()``                       :py:func:`PIL.features.version_module` with
+                                              ``feature="littlecms2"``, :py:data:`sys.version` or
+                                              :py:data:`sys.version_info`, and ``PIL.__version__``
+============================================  ====================================================
+
+ImageMath eval()
+^^^^^^^^^^^^^^^^
+
+.. deprecated:: 10.3.0
+
+``ImageMath.eval()`` has been deprecated. Use :py:meth:`~PIL.ImageMath.lambda_eval` or
+:py:meth:`~PIL.ImageMath.unsafe_eval` instead.
+
+BGR;15, BGR 16 and BGR;24
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 10.4.0
+
+The experimental BGR;15, BGR;16 and BGR;24 modes have been deprecated.
+
+Non-image modes in ImageCms
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 10.4.0
+
+The use in :py:mod:`.ImageCms` of input modes and output modes that are not Pillow
+image modes has been deprecated. Defaulting to "L" or "1" if the mode cannot be mapped
+is also deprecated.
+
+Support for LibTIFF earlier than 4
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 10.4.0
+
+Support for LibTIFF earlier than version 4 has been deprecated.
+Upgrade to a newer version of LibTIFF instead.
+
+ImageDraw.getdraw hints parameter
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 10.4.0
+
+The ``hints`` parameter in :py:meth:`~PIL.ImageDraw.getdraw()` has been deprecated.
+
+FreeType 2.9.0
+^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+
+Support for FreeType 2.9.0 is deprecated and will be removed in Pillow 12.0.0
+(2025-10-15), when FreeType 2.9.1 will be the minimum supported.
+
+We recommend upgrading to at least FreeType `2.10.4`_, which fixed a severe
+vulnerability introduced in FreeType 2.6 (:cve:`2020-15999`).
+
+.. _2.10.4: https://sourceforge.net/projects/freetype/files/freetype2/2.10.4/
+
+ICNS (width, height, scale) sizes
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+
+Setting an ICNS image size to ``(width, height, scale)`` before loading has been
+deprecated. Instead, ``load(scale)`` can be used.
+
+Image isImageType()
+^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+
+``Image.isImageType(im)`` has been deprecated. Use ``isinstance(im, Image.Image)``
+instead.
+
+ImageMath.lambda_eval and ImageMath.unsafe_eval options parameter
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+
+The ``options`` parameter in :py:meth:`~PIL.ImageMath.lambda_eval()` and
+:py:meth:`~PIL.ImageMath.unsafe_eval()` has been deprecated. One or more keyword
+arguments can be used instead.
+
+JpegImageFile.huffman_ac and JpegImageFile.huffman_dc
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+
+The ``huffman_ac`` and ``huffman_dc`` dictionaries on JPEG images were unused. They
+have been deprecated, and will be removed in Pillow 12 (2025-10-15).
+
+Specific WebP Feature Checks
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+
+``features.check("transp_webp")``, ``features.check("webp_mux")`` and
+``features.check("webp_anim")`` are now deprecated. They will always return
+``True`` if the WebP module is installed, until they are removed in Pillow
+12.0.0 (2025-10-15).
+
+Get internal pointers to objects
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+
+``Image.core.ImagingCore.id`` and ``Image.core.ImagingCore.unsafe_ptrs`` have been
+deprecated and will be removed in Pillow 12 (2025-10-15). They were used for obtaining
+raw pointers to ``ImagingCore`` internals. To interact with C code, you can use
+``Image.Image.getim()``, which returns a ``Capsule`` object.
 
 Removed features
 ----------------
@@ -28,6 +181,36 @@ Removed features
 Deprecated features are only removed in major releases after an appropriate
 period of deprecation has passed.
 
+TiffImagePlugin IFD_LEGACY_API
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. versionremoved:: 11.0.0
+
+``TiffImagePlugin.IFD_LEGACY_API`` was removed, as it was an unused setting.
+
+PSFile
+~~~~~~
+
+.. deprecated:: 9.5.0
+.. versionremoved:: 11.0.0
+
+The :py:class:`!PSFile` class was removed in Pillow 11 (2024-10-15).
+This class was only made as a helper to be used internally,
+so there is no replacement. If you need this functionality though,
+it is a very short class that can easily be recreated in your own code.
+
+PyAccess and Image.USE_CFFI_ACCESS
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 10.0.0
+.. versionremoved:: 11.0.0
+
+Since Pillow's C API is now faster than PyAccess on PyPy, ``PyAccess`` has been
+removed. Pillow's C API will now be used on PyPy instead.
+
+``Image.USE_CFFI_ACCESS``, for switching from the C API to PyAccess, was
+similarly removed.
+
 Tk/Tcl 8.4
 ~~~~~~~~~~
 
@@ -85,7 +268,7 @@ Constants
 .. versionremoved:: 10.0.0
 
 A number of constants have been removed.
-Instead, ``enum.IntEnum`` classes have been added.
+Instead, :py:class:`enum.IntEnum` classes have been added.
 
 .. note::
 
@@ -162,10 +345,10 @@ Previous code::
 
     im = Image.new("RGB", (100, 100))
     draw = ImageDraw.Draw(im)
-    width, height = draw.textsize("Hello world")
+    width, height = draw.textsize("Hello world", font)
 
     width, height = font.getsize_multiline("Hello\nworld")
-    width, height = draw.multiline_textsize("Hello\nworld")
+    width, height = draw.multiline_textsize("Hello\nworld", font)
 
 Use instead::
 
@@ -177,11 +360,43 @@ Use instead::
 
     im = Image.new("RGB", (100, 100))
     draw = ImageDraw.Draw(im)
-    width = draw.textlength("Hello world")
+    width = draw.textlength("Hello world", font)
 
-    left, top, right, bottom = draw.multiline_textbbox((0, 0), "Hello\nworld")
+    left, top, right, bottom = draw.multiline_textbbox((0, 0), "Hello\nworld", font)
     width, height = right - left, bottom - top
 
+Previously, the ``size`` methods returned a ``height`` that included the vertical
+offset of the text, while the new ``bbox`` methods distinguish this as a ``top``
+offset.
+
+.. image:: ./example/size_vs_bbox.webp
+    :alt: In bbox methods, top measures the vertical distance above the text, while bottom measures that plus the vertical distance of the text itself. In size methods, height also measures the vertical distance above the text plus the vertical distance of the text itself.
+    :align: center
+
+If you are using these methods for aligning text, consider using :ref:`text-anchors` instead
+which avoid issues that can occur with non-English text or unusual fonts.
+For example, instead of the following code::
+
+    from PIL import Image, ImageDraw, ImageFont
+
+    font = ImageFont.truetype("Tests/fonts/FreeMono.ttf")
+
+    im = Image.new("RGB", (100, 100))
+    draw = ImageDraw.Draw(im)
+    width, height = draw.textsize("Hello world", font)
+    x, y = (100 - width) / 2, (100 - height) / 2
+    draw.text((x, y), "Hello world", font=font)
+
+Use instead::
+
+    from PIL import Image, ImageDraw, ImageFont
+
+    font = ImageFont.truetype("Tests/fonts/FreeMono.ttf")
+
+    im = Image.new("RGB", (100, 100))
+    draw = ImageDraw.Draw(im)
+    draw.text((100 / 2, 100 / 2), "Hello world", font=font, anchor="mm")
+
 FreeTypeFont.getmask2 fill parameter
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -255,7 +470,7 @@ ImageFile.raise_ioerror
 .. deprecated:: 7.2.0
 .. versionremoved:: 9.0.0
 
-``IOError`` was merged into ``OSError`` in Python 3.3.
+:py:exc:`IOError` was merged into :py:exc:`OSError` in Python 3.3.
 So, ``ImageFile.raise_ioerror`` has been removed.
 Use ``ImageFile.raise_oserror`` instead.
 
@@ -281,9 +496,9 @@ im.offset
 ``im.offset()`` has been removed, call :py:func:`.ImageChops.offset()` instead.
 
 It was documented as deprecated in PIL 1.1.2,
-raised a ``DeprecationWarning`` since 1.1.5,
-an ``Exception`` since Pillow 3.0.0
-and ``NotImplementedError`` since 3.3.0.
+raised a :py:exc:`DeprecationWarning` since 1.1.5,
+an :py:exc:`Exception` since Pillow 3.0.0
+and :py:exc:`NotImplementedError` since 3.3.0.
 
 Image.fromstring, im.fromstring and im.tostring
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -295,9 +510,9 @@ Image.fromstring, im.fromstring and im.tostring
 * ``im.fromstring()`` has been removed, call :py:meth:`~PIL.Image.Image.frombytes()` instead.
 * ``im.tostring()`` has been removed, call :py:meth:`~PIL.Image.Image.tobytes()` instead.
 
-They issued a ``DeprecationWarning`` since 2.0.0,
-an ``Exception`` since 3.0.0
-and ``NotImplementedError`` since 3.3.0.
+They issued a :py:exc:`DeprecationWarning` since 2.0.0,
+an :py:exc:`Exception` since 3.0.0
+and :py:exc:`NotImplementedError` since 3.3.0.
 
 ImageCms.CmsProfile attributes
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -305,8 +520,8 @@ ImageCms.CmsProfile attributes
 .. deprecated:: 3.2.0
 .. versionremoved:: 8.0.0
 
-Some attributes in :py:class:`PIL.ImageCms.CmsProfile` have been removed. From 6.0.0,
-they issued a ``DeprecationWarning``:
+Some attributes in :py:class:`PIL.ImageCms.core.CmsProfile` have been removed.
+From 6.0.0, they issued a :py:exc:`DeprecationWarning`:
 
 ========================  ===================================================
 Removed                   Use instead
@@ -430,7 +645,31 @@ PIL.OleFileIO
 .. deprecated:: 4.0.0
 .. versionremoved:: 6.0.0
 
-PIL.OleFileIO was removed as a vendored file in Pillow 4.0.0 (2017-01) in favour of
-the upstream olefile Python package, and replaced with an ``ImportError`` in 5.0.0
+``PIL.OleFileIO`` was removed as a vendored file in Pillow 4.0.0 (2017-01) in favour of
+the upstream :pypi:`olefile` Python package, and replaced with an :py:exc:`ImportError` in 5.0.0
 (2018-01). The deprecated file has now been removed from Pillow. If needed, install from
 PyPI (eg. ``python3 -m pip install olefile``).
+
+import _imaging
+~~~~~~~~~~~~~~~
+
+.. versionremoved:: 2.1.0
+
+Pillow >= 2.1.0 no longer supports ``import _imaging``.
+Please use ``from PIL.Image import core as _imaging`` instead.
+
+Pillow and PIL
+~~~~~~~~~~~~~~
+
+.. versionremoved:: 1.0.0
+
+Pillow and PIL cannot co-exist in the same environment.
+Before installing Pillow, please uninstall PIL.
+
+import Image
+~~~~~~~~~~~~
+
+.. versionremoved:: 1.0.0
+
+Pillow >= 1.0 no longer supports ``import Image``.
+Please use ``from PIL import Image`` instead.
diff --git a/docs/example/DdsImagePlugin.py b/docs/example/DdsImagePlugin.py
index 26451533e..10828bff0 100644
--- a/docs/example/DdsImagePlugin.py
+++ b/docs/example/DdsImagePlugin.py
@@ -10,8 +10,11 @@ Full text of the CC0 license:
   https://creativecommons.org/publicdomain/zero/1.0/
 """
 
+from __future__ import annotations
+
 import struct
 from io import BytesIO
+from typing import IO
 
 from PIL import Image, ImageFile
 
@@ -92,26 +95,26 @@ DXT3_FOURCC = 0x33545844
 DXT5_FOURCC = 0x35545844
 
 
-def _decode565(bits):
+def _decode565(bits: int) -> tuple[int, int, int]:
     a = ((bits >> 11) & 0x1F) << 3
     b = ((bits >> 5) & 0x3F) << 2
     c = (bits & 0x1F) << 3
     return a, b, c
 
 
-def _c2a(a, b):
+def _c2a(a: int, b: int) -> int:
     return (2 * a + b) // 3
 
 
-def _c2b(a, b):
+def _c2b(a: int, b: int) -> int:
     return (a + b) // 2
 
 
-def _c3(a, b):
+def _c3(a: int, b: int) -> int:
     return (2 * b + a) // 3
 
 
-def _dxt1(data, width, height):
+def _dxt1(data: IO[bytes], width: int, height: int) -> bytes:
     # TODO implement this function as pixel format in decode.c
     ret = bytearray(4 * width * height)
 
@@ -149,7 +152,7 @@ def _dxt1(data, width, height):
     return bytes(ret)
 
 
-def _dxtc_alpha(a0, a1, ac0, ac1, ai):
+def _dxtc_alpha(a0: int, a1: int, ac0: int, ac1: int, ai: int) -> int:
     if ai <= 12:
         ac = (ac0 >> ai) & 7
     elif ai == 15:
@@ -173,7 +176,7 @@ def _dxtc_alpha(a0, a1, ac0, ac1, ai):
     return alpha
 
 
-def _dxt5(data, width, height):
+def _dxt5(data: IO[bytes], width: int, height: int) -> bytes:
     # TODO implement this function as pixel format in decode.c
     ret = bytearray(4 * width * height)
 
@@ -209,7 +212,7 @@ class DdsImageFile(ImageFile.ImageFile):
     format = "DDS"
     format_description = "DirectDraw Surface"
 
-    def _open(self):
+    def _open(self) -> None:
         if not _accept(self.fp.read(4)):
             msg = "not a DDS file"
             raise SyntaxError(msg)
@@ -225,7 +228,7 @@ class DdsImageFile(ImageFile.ImageFile):
 
         flags, height, width = struct.unpack("<3I", header.read(12))
         self._size = (width, height)
-        self.mode = "RGBA"
+        self._mode = "RGBA"
 
         pitch, depth, mipmaps = struct.unpack("<3I", header.read(12))
         struct.unpack("<11I", header.read(44))  # reserved
@@ -240,19 +243,22 @@ class DdsImageFile(ImageFile.ImageFile):
         elif fourcc == b"DXT5":
             self.decoder = "DXT5"
         else:
-            msg = f"Unimplemented pixel format {fourcc}"
+            msg = f"Unimplemented pixel format {repr(fourcc)}"
             raise NotImplementedError(msg)
 
-        self.tile = [(self.decoder, (0, 0) + self.size, 0, (self.mode, 0, 1))]
+        self.tile = [
+            ImageFile._Tile(self.decoder, (0, 0) + self.size, 0, (self.mode, 0, 1))
+        ]
 
-    def load_seek(self, pos):
+    def load_seek(self, pos: int) -> None:
         pass
 
 
 class DXT1Decoder(ImageFile.PyDecoder):
     _pulls_fd = True
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
+        assert self.fd is not None
         try:
             self.set_as_raw(_dxt1(self.fd, self.state.xsize, self.state.ysize))
         except struct.error as e:
@@ -264,7 +270,8 @@ class DXT1Decoder(ImageFile.PyDecoder):
 class DXT5Decoder(ImageFile.PyDecoder):
     _pulls_fd = True
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
+        assert self.fd is not None
         try:
             self.set_as_raw(_dxt5(self.fd, self.state.xsize, self.state.ysize))
         except struct.error as e:
@@ -277,7 +284,7 @@ Image.register_decoder("DXT1", DXT1Decoder)
 Image.register_decoder("DXT5", DXT5Decoder)
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] == b"DDS "
 
 
diff --git a/docs/example/anchors.png b/docs/example/anchors.png
deleted file mode 100644
index 40476b092..000000000
Binary files a/docs/example/anchors.png and /dev/null differ
diff --git a/docs/example/anchors.py b/docs/example/anchors.py
index 3447de4f7..2ee11103f 100644
--- a/docs/example/anchors.py
+++ b/docs/example/anchors.py
@@ -1,9 +1,11 @@
+from __future__ import annotations
+
 from PIL import Image, ImageDraw, ImageFont
 
 font = ImageFont.truetype("Tests/fonts/NotoSans-Regular.ttf", 16)
 
 
-def test(anchor):
+def test(anchor: str) -> Image.Image:
     im = Image.new("RGBA", (200, 100), "white")
     d = ImageDraw.Draw(im)
     d.line(((100, 0), (100, 100)), "gray")
@@ -24,5 +26,5 @@ if __name__ == "__main__":
                 d.line(((x * 200, y * 100), (x * 200, (y + 1) * 100)), "black", 3)
             if y != 0:
                 d.line(((x * 200, y * 100), ((x + 1) * 200, y * 100)), "black", 3)
-    im.save("docs/example/anchors.png")
+    im.save("docs/example/anchors.webp")
     im.show()
diff --git a/docs/example/anchors.webp b/docs/example/anchors.webp
new file mode 100644
index 000000000..216b6c235
Binary files /dev/null and b/docs/example/anchors.webp differ
diff --git a/docs/example/image_thumbnail.webp b/docs/example/image_thumbnail.webp
new file mode 100644
index 000000000..9780f2852
Binary files /dev/null and b/docs/example/image_thumbnail.webp differ
diff --git a/docs/example/imageops_contain.webp b/docs/example/imageops_contain.webp
new file mode 100644
index 000000000..9780f2852
Binary files /dev/null and b/docs/example/imageops_contain.webp differ
diff --git a/docs/example/imageops_cover.webp b/docs/example/imageops_cover.webp
new file mode 100644
index 000000000..a0b6c10bf
Binary files /dev/null and b/docs/example/imageops_cover.webp differ
diff --git a/docs/example/imageops_fit.webp b/docs/example/imageops_fit.webp
new file mode 100644
index 000000000..803ee66d2
Binary files /dev/null and b/docs/example/imageops_fit.webp differ
diff --git a/docs/example/imageops_pad.webp b/docs/example/imageops_pad.webp
new file mode 100644
index 000000000..0ab63ef42
Binary files /dev/null and b/docs/example/imageops_pad.webp differ
diff --git a/docs/example/size_vs_bbox.webp b/docs/example/size_vs_bbox.webp
new file mode 100644
index 000000000..391162d2d
Binary files /dev/null and b/docs/example/size_vs_bbox.webp differ
diff --git a/docs/handbook/animated_hopper.gif b/docs/handbook/animated_hopper.gif
new file mode 100644
index 000000000..e6eeaffcc
Binary files /dev/null and b/docs/handbook/animated_hopper.gif differ
diff --git a/docs/handbook/concepts.rst b/docs/handbook/concepts.rst
index e0975a121..7da1078c1 100644
--- a/docs/handbook/concepts.rst
+++ b/docs/handbook/concepts.rst
@@ -59,9 +59,6 @@ Pillow also provides limited support for a few additional modes, including:
     * ``I;16L`` (16-bit little endian unsigned integer pixels)
     * ``I;16B`` (16-bit big endian unsigned integer pixels)
     * ``I;16N`` (16-bit native endian unsigned integer pixels)
-    * ``BGR;15`` (15-bit reversed true colour)
-    * ``BGR;16`` (16-bit reversed true colour)
-    * ``BGR;24`` (24-bit reversed true colour)
 
 Premultiplied alpha is where the values for each other channel have been
 multiplied by the alpha. For example, an RGBA pixel of ``(10, 20, 30, 127)``
@@ -147,10 +144,12 @@ pixel, the Python Imaging Library provides different resampling *filters*.
 .. py:currentmodule:: PIL.Image
 
 .. data:: Resampling.NEAREST
+    :noindex:
 
     Pick one nearest pixel from the input image. Ignore all other input pixels.
 
 .. data:: Resampling.BOX
+    :noindex:
 
     Each pixel of source image contributes to one pixel of the
     destination image with identical weights.
@@ -161,6 +160,7 @@ pixel, the Python Imaging Library provides different resampling *filters*.
     .. versionadded:: 3.4.0
 
 .. data:: Resampling.BILINEAR
+    :noindex:
 
     For resize calculate the output pixel value using linear interpolation
     on all pixels that may contribute to the output value.
@@ -168,6 +168,7 @@ pixel, the Python Imaging Library provides different resampling *filters*.
     in the input image is used.
 
 .. data:: Resampling.HAMMING
+    :noindex:
 
     Produces a sharper image than :data:`Resampling.BILINEAR`, doesn't have
     dislocations on local level like with :data:`Resampling.BOX`.
@@ -177,6 +178,7 @@ pixel, the Python Imaging Library provides different resampling *filters*.
     .. versionadded:: 3.4.0
 
 .. data:: Resampling.BICUBIC
+    :noindex:
 
     For resize calculate the output pixel value using cubic interpolation
     on all pixels that may contribute to the output value.
@@ -184,6 +186,7 @@ pixel, the Python Imaging Library provides different resampling *filters*.
     in the input image is used.
 
 .. data:: Resampling.LANCZOS
+    :noindex:
 
     Calculate the output pixel value using a high-quality Lanczos filter (a
     truncated sinc) on all pixels that may contribute to the output value.
diff --git a/docs/handbook/contrasted_hopper.jpg b/docs/handbook/contrasted_hopper.jpg
new file mode 100644
index 000000000..b2d7cfacb
Binary files /dev/null and b/docs/handbook/contrasted_hopper.jpg differ
diff --git a/docs/handbook/cropped_hopper.webp b/docs/handbook/cropped_hopper.webp
new file mode 100644
index 000000000..8d0ae4f97
Binary files /dev/null and b/docs/handbook/cropped_hopper.webp differ
diff --git a/docs/handbook/enhanced_hopper.webp b/docs/handbook/enhanced_hopper.webp
new file mode 100644
index 000000000..a582ac0c2
Binary files /dev/null and b/docs/handbook/enhanced_hopper.webp differ
diff --git a/docs/handbook/flip_left_right_hopper.webp b/docs/handbook/flip_left_right_hopper.webp
new file mode 100644
index 000000000..59452268d
Binary files /dev/null and b/docs/handbook/flip_left_right_hopper.webp differ
diff --git a/docs/handbook/flip_top_bottom_hopper.webp b/docs/handbook/flip_top_bottom_hopper.webp
new file mode 100644
index 000000000..28af4bf36
Binary files /dev/null and b/docs/handbook/flip_top_bottom_hopper.webp differ
diff --git a/docs/handbook/hopper_ps.webp b/docs/handbook/hopper_ps.webp
new file mode 100644
index 000000000..3dd2943d6
Binary files /dev/null and b/docs/handbook/hopper_ps.webp differ
diff --git a/docs/handbook/image-file-formats.rst b/docs/handbook/image-file-formats.rst
index bbcf48e42..bf3087f6f 100644
--- a/docs/handbook/image-file-formats.rst
+++ b/docs/handbook/image-file-formats.rst
@@ -63,8 +63,35 @@ DDS
 ^^^
 
 DDS is a popular container texture format used in video games and natively supported
-by DirectX. Uncompressed RGB and RGBA can be read, and (since 8.3.0) written. DXT1,
-DXT3 (since 3.4.0) and DXT5 pixel formats can be read, only in ``RGBA`` mode.
+by DirectX.
+
+DXT1 and DXT5 pixel formats can be read, only in ``RGBA`` mode.
+
+.. versionadded:: 3.4.0
+   DXT3 images can be read in ``RGB`` mode and DX10 images can be read in
+   ``RGB`` and ``RGBA`` mode.
+
+.. versionadded:: 6.0.0
+   Uncompressed ``RGBA`` images can be read.
+
+
+.. versionadded:: 8.3.0
+   BC5S images can be opened in ``RGB`` mode, and uncompressed ``RGB`` images
+   can be read. Uncompressed data can also be saved to image files.
+
+
+.. versionadded:: 9.3.0
+   ATI1 images can be opened in ``L`` mode and ATI2 images can be opened in
+   ``RGB`` mode.
+
+.. versionadded:: 9.4.0
+   Uncompressed ``L`` ("luminance") and ``LA`` images can be opened and saved.
+
+
+.. versionadded:: 10.1.0
+   BC5U can be read in ``RGB`` mode, and 8-bit color indexed images can be read
+   in ``P`` mode.
+
 
 DIB
 ^^^
@@ -88,8 +115,13 @@ in ``L``, ``RGB`` and ``CMYK`` modes.
 Loading
 ~~~~~~~
 
+To use Ghostscript, Pillow searches for the "gs" executable. On Windows, it
+also searches for "gswin32c" and "gswin64c". To customise this behaviour,
+``EpsImagePlugin.gs_binary = "gswin64"`` will set the name of the executable to
+use. ``EpsImagePlugin.gs_binary = False`` will prevent Ghostscript use.
+
 If Ghostscript is available, you can call the :py:meth:`~PIL.Image.Image.load`
-method with the following parameters to affect how Ghostscript renders the EPS
+method with the following parameters to affect how Ghostscript renders the EPS.
 
 **scale**
     Affects the scale of the resultant rasterized image. If the EPS suggests
@@ -234,9 +266,13 @@ following options are available::
     :py:class:`PIL.ImagePalette.ImagePalette` object.
 
 **optimize**
-    If present and true, attempt to compress the palette by
-    eliminating unused colors. This is only useful if the palette can
-    be compressed to the next smaller power of 2 elements.
+    Whether to attempt to compress the palette by eliminating unused colors
+    (this is only useful if the palette can be compressed to the next smaller
+    power of 2 elements) and whether to mark all pixels that are not new in the
+    next frame as transparent.
+
+    This is attempted by default, unless a palette is specified as an option or
+    as part of the first image's :py:attr:`~PIL.Image.Image.info` dictionary.
 
 Note that if the image you are saving comes from an existing GIF, it may have
 the following properties in its :py:attr:`~PIL.Image.Image.info` dictionary.
@@ -253,7 +289,7 @@ their :py:attr:`~PIL.Image.Image.info` values.
 
 **loop**
     Integer number of times the GIF should loop. 0 means that it will loop
-    forever. By default, the image will not loop.
+    forever. If omitted or ``None``, the image will not loop.
 
 **comment**
     A comment about the image.
@@ -288,12 +324,19 @@ sets the following :py:attr:`~PIL.Image.Image.info` property:
 **sizes**
     A list of supported sizes found in this icon file; these are a
     3-tuple, ``(width, height, scale)``, where ``scale`` is 2 for a retina
-    icon and 1 for a standard icon.  You *are* permitted to use this 3-tuple
-    format for the :py:attr:`~PIL.Image.Image.size` property if you set it
-    before calling :py:meth:`~PIL.Image.Image.load`; after loading, the size
-    will be reset to a 2-tuple containing pixel dimensions (so, e.g. if you
-    ask for ``(512, 512, 2)``, the final value of
-    :py:attr:`~PIL.Image.Image.size` will be ``(1024, 1024)``).
+    icon and 1 for a standard icon.
+
+.. _icns-loading:
+
+Loading
+~~~~~~~
+
+You can call the :py:meth:`~PIL.Image.Image.load` method with the following parameter.
+
+**scale**
+    Affects the scale of the resultant image. If the size is set to ``(512, 512)``,
+    after loading at scale 2, the final value of :py:attr:`~PIL.Image.Image.size` will
+    be ``(1024, 1024)``.
 
 .. _icns-saving:
 
@@ -451,6 +494,16 @@ The :py:meth:`~PIL.Image.Image.save` method supports the following options:
 **exif**
     If present, the image will be stored with the provided raw EXIF data.
 
+**keep_rgb**
+    By default, libjpeg converts images with an RGB color space to YCbCr.
+    If this option is present and true, those images will be stored as RGB
+    instead.
+
+    When this option is enabled, attempting to chroma-subsample RGB images
+    with the ``subsampling`` option will raise an :py:exc:`OSError`.
+
+    .. versionadded:: 10.2.0
+
 **subsampling**
     If present, sets the subsampling for the encoder.
 
@@ -462,6 +515,18 @@ The :py:meth:`~PIL.Image.Image.save` method supports the following options:
 
     If absent, the setting will be determined by libjpeg or libjpeg-turbo.
 
+**restart_marker_blocks**
+    If present, emit a restart marker whenever the specified number of MCU
+    blocks has been produced.
+
+    .. versionadded:: 10.2.0
+
+**restart_marker_rows**
+    If present, emit a restart marker whenever the specified number of MCU
+    rows has been produced.
+
+    .. versionadded:: 10.2.0
+
 **qtables**
     If present, sets the qtables for the encoder. This is listed as an
     advanced option for wizards in the JPEG documentation. Use with
@@ -474,6 +539,19 @@ The :py:meth:`~PIL.Image.Image.save` method supports the following options:
 
     .. versionadded:: 2.5.0
 
+**streamtype**
+    Allows storing images without quantization and Huffman tables, or with
+    these tables but without image data.  This is useful for container formats
+    or network protocols that handle tables separately and share them between
+    images.
+
+    * ``0`` (default): interchange datastream, with tables and image data
+    * ``1``: abbreviated table specification (tables-only) datastream
+
+      .. versionadded:: 10.2.0
+
+    * ``2``: abbreviated image (image-only) datastream
+
 **comment**
     A comment about the image.
 
@@ -491,12 +569,13 @@ JPEG 2000
 
 .. versionadded:: 2.4.0
 
-Pillow reads and writes JPEG 2000 files containing ``L``, ``LA``, ``RGB`` or
-``RGBA`` data.  It can also read files containing ``YCbCr`` data, which it
-converts on read into ``RGB`` or ``RGBA`` depending on whether or not there is
-an alpha channel.  Pillow supports JPEG 2000 raw codestreams (``.j2k`` files),
-as well as boxed JPEG 2000 files (``.j2p`` or ``.jpx`` files).  Pillow does
-*not* support files whose components have different sampling frequencies.
+Pillow reads and writes JPEG 2000 files containing ``L``, ``LA``, ``RGB``,
+``RGBA``, or ``YCbCr`` data.  When reading, ``YCbCr`` data is converted to
+``RGB`` or ``RGBA`` depending on whether or not there is an alpha channel.
+Beginning with version 8.3.0, Pillow can read (but not write) ``RGB``,
+``RGBA``, and ``YCbCr`` images with subsampled components.  Pillow supports
+JPEG 2000 raw codestreams (``.j2k`` files), as well as boxed JPEG 2000 files
+(``.jp2`` or ``.jpx`` files).
 
 When loading, if you set the ``mode`` on the image prior to the
 :py:meth:`~PIL.Image.Image.load` method being invoked, you can ask Pillow to
@@ -613,6 +692,30 @@ The :py:meth:`~PIL.Image.Image.save` method supports the following options:
    you fail to do this, you will get errors about not being able to load the
    ``_imaging`` DLL).
 
+MPO
+^^^
+
+Pillow reads and writes Multi Picture Object (MPO) files. When first opened, it loads
+the primary image. The :py:meth:`~PIL.Image.Image.seek` and
+:py:meth:`~PIL.Image.Image.tell` methods may be used to read other pictures from the
+file. The pictures are zero-indexed and random access is supported.
+
+.. _mpo-saving:
+
+Saving
+~~~~~~
+
+When calling :py:meth:`~PIL.Image.Image.save` to write an MPO file, by default
+only the first frame of a multiframe image will be saved. If the ``save_all``
+argument is present and true, then all frames will be saved, and the following
+option will also be available.
+
+**append_images**
+    A list of images to append as additional pictures. Each of the
+    images in the list can be single or multiframe images.
+
+    .. versionadded:: 9.3.0
+
 MSP
 ^^^
 
@@ -624,6 +727,25 @@ PCX
 
 Pillow reads and writes PCX files containing ``1``, ``L``, ``P``, or ``RGB`` data.
 
+PFM
+^^^
+
+.. versionadded:: 10.3.0
+
+Pillow reads and writes grayscale (Pf format) Portable FloatMap (PFM) files
+containing ``F`` data.
+
+Color (PF format) PFM files are not supported.
+
+Opening
+~~~~~~~
+
+The :py:func:`~PIL.Image.open` function sets the following
+:py:attr:`~PIL.Image.Image.info` properties:
+
+**scale**
+    The absolute value of the number stored in the *Scale Factor / Endianness* line.
+
 PNG
 ^^^
 
@@ -861,6 +983,10 @@ PPM
 Pillow reads and writes PBM, PGM, PPM and PNM files containing ``1``, ``L``, ``I`` or
 ``RGB`` data.
 
+"Raw" (P4 to P6) formats can be read, and are used when writing.
+
+Since Pillow 9.2.0, "plain" (P1 to P3) formats can be read as well.
+
 SGI
 ^^^
 
@@ -1125,8 +1251,7 @@ using the general tags available through tiffinfo.
 WebP
 ^^^^
 
-Pillow reads and writes WebP files. The specifics of Pillow's capabilities with
-this format are currently undocumented.
+Pillow reads and writes WebP files. Requires libwebp v0.5.0 or later.
 
 .. _webp-saving:
 
@@ -1139,40 +1264,34 @@ The :py:meth:`~PIL.Image.Image.save` method supports the following options:
     If present and true, instructs the WebP writer to use lossless compression.
 
 **quality**
-    Integer, 0-100, Defaults to 80. For lossy, 0 gives the smallest
+    Integer, 0-100, defaults to 80. For lossy, 0 gives the smallest
     size and 100 the largest. For lossless, this parameter is the amount
     of effort put into the compression: 0 is the fastest, but gives larger
     files compared to the slowest, but best, 100.
 
+**alpha_quality**
+    Integer, 0-100, defaults to 100. For lossy compression only. 0 gives the
+    smallest size and 100 is lossless.
+
 **method**
     Quality/speed trade-off (0=fast, 6=slower-better). Defaults to 4.
 
 **exact**
     If true, preserve the transparent RGB values. Otherwise, discard
     invisible RGB values for better compression. Defaults to false.
-    Requires libwebp 0.5.0 or later.
 
 **icc_profile**
-    The ICC Profile to include in the saved file. Only supported if
-    the system WebP library was built with webpmux support.
+    The ICC Profile to include in the saved file.
 
 **exif**
-    The exif data to include in the saved file. Only supported if
-    the system WebP library was built with webpmux support.
+    The exif data to include in the saved file.
 
 **xmp**
-    The XMP data to include in the saved file. Only supported if
-    the system WebP library was built with webpmux support.
+    The XMP data to include in the saved file.
 
 Saving sequences
 ~~~~~~~~~~~~~~~~
 
-.. note::
-
-    Support for animated WebP files will only be enabled if the system WebP
-    library is v0.5.0 or later. You can check webp animation support at
-    runtime by calling ``features.check("webp_anim")``.
-
 When calling :py:meth:`~PIL.Image.Image.save` to write a WebP file, by default
 only the first frame of a multiframe image will be saved. If the ``save_all``
 argument is present and true, then all frames will be saved, and the following
@@ -1240,7 +1359,8 @@ FITS
 
 .. versionadded:: 9.1.0
 
-Pillow identifies and reads FITS files, commonly used for astronomy.
+Pillow identifies and reads FITS files, commonly used for astronomy. Uncompressed and
+GZIP_1 compressed images can be read.
 
 FLI, FLC
 ^^^^^^^^
@@ -1256,9 +1376,10 @@ The :py:meth:`~PIL.Image.open` method sets the following
 FPX
 ^^^
 
-Pillow reads Kodak FlashPix files. In the current version, only the highest
-resolution image is read from the file, and the viewing transform is not taken
-into account.
+Pillow reads Kodak FlashPix files. Only the highest resolution image is read from the
+file, and the viewing transform is not taken into account.
+
+To enable FPX support, you must install :pypi:`olefile`.
 
 .. note::
 
@@ -1336,29 +1457,7 @@ the first sprite in the file is loaded. You can use :py:meth:`~PIL.Image.Image.s
 
 Note that there may be an embedded gamma of 2.2 in MIC files.
 
-MPO
-^^^
-
-Pillow identifies and reads Multi Picture Object (MPO) files, loading the primary
-image when first opened. The :py:meth:`~PIL.Image.Image.seek` and :py:meth:`~PIL.Image.Image.tell`
-methods may be used to read other pictures from the file. The pictures are
-zero-indexed and random access is supported.
-
-.. _mpo-saving:
-
-Saving
-~~~~~~
-
-When calling :py:meth:`~PIL.Image.Image.save` to write an MPO file, by default
-only the first frame of a multiframe image will be saved. If the ``save_all``
-argument is present and true, then all frames will be saved, and the following
-option will also be available.
-
-**append_images**
-    A list of images to append as additional pictures. Each of the
-    images in the list can be single or multiframe images.
-
-    .. versionadded:: 9.3.0
+To enable MIC support, you must install :pypi:`olefile`.
 
 PCD
 ^^^
@@ -1385,7 +1484,9 @@ QOI
 
 .. versionadded:: 9.5.0
 
-Pillow identifies and reads images in Quite OK Image format.
+Pillow reads images in Quite OK Image format using a Python decoder. If you wish to
+write code specifically for this format, :pypi:`qoi` is an alternative library that
+uses C to decode the image and interfaces with NumPy.
 
 SUN
 ^^^
@@ -1404,7 +1505,7 @@ the open function in the :py:mod:`~PIL.WalImageFile` module to read files in
 this format.
 
 By default, a Quake2 standard palette is attached to the texture. To override
-the palette, use the putpalette method.
+the palette, use the :py:func:`PIL.Image.Image.putpalette()` method.
 
 WMF, EMF
 ^^^^^^^^
@@ -1423,19 +1524,21 @@ To add other read or write support, use
 :py:func:`PIL.WmfImagePlugin.register_handler` to register a WMF and EMF
 handler. ::
 
-    from PIL import Image
+    from typing import IO
+
+    from PIL import Image, ImageFile
     from PIL import WmfImagePlugin
 
 
-    class WmfHandler:
-        def open(self, im):
+    class WmfHandler(ImageFile.StubHandler):
+        def open(self, im: ImageFile.StubImageFile) -> None:
             ...
 
-        def load(self, im):
+        def load(self, im: ImageFile.StubImageFile) -> Image.Image:
             ...
             return image
 
-        def save(self, im, fp, filename):
+        def save(self, im: Image.Image, fp: IO[bytes], filename: str) -> None:
             ...
 
 
@@ -1482,7 +1585,7 @@ files. Different encoding methods are used, depending on the image mode.
   unavailable
 * L, RGB and CMYK mode images use JPEG encoding
 * P mode images use HEX encoding
-* RGBA mode images use JPEG2000 encoding
+* LA and RGBA mode images use JPEG2000 encoding
 
 .. _pdf-saving:
 
diff --git a/docs/handbook/masked_hopper.webp b/docs/handbook/masked_hopper.webp
new file mode 100644
index 000000000..ef892cb94
Binary files /dev/null and b/docs/handbook/masked_hopper.webp differ
diff --git a/docs/handbook/merged_hopper.webp b/docs/handbook/merged_hopper.webp
new file mode 100644
index 000000000..324628358
Binary files /dev/null and b/docs/handbook/merged_hopper.webp differ
diff --git a/docs/handbook/pasted_hopper.webp b/docs/handbook/pasted_hopper.webp
new file mode 100644
index 000000000..90dc31994
Binary files /dev/null and b/docs/handbook/pasted_hopper.webp differ
diff --git a/docs/handbook/rebanded_hopper.webp b/docs/handbook/rebanded_hopper.webp
new file mode 100644
index 000000000..7a9069c9f
Binary files /dev/null and b/docs/handbook/rebanded_hopper.webp differ
diff --git a/docs/handbook/rolled_hopper.webp b/docs/handbook/rolled_hopper.webp
new file mode 100644
index 000000000..7fe802463
Binary files /dev/null and b/docs/handbook/rolled_hopper.webp differ
diff --git a/docs/handbook/rotated_hopper_180.webp b/docs/handbook/rotated_hopper_180.webp
new file mode 100644
index 000000000..08e14f0e3
Binary files /dev/null and b/docs/handbook/rotated_hopper_180.webp differ
diff --git a/docs/handbook/rotated_hopper_270.webp b/docs/handbook/rotated_hopper_270.webp
new file mode 100644
index 000000000..ead2e102e
Binary files /dev/null and b/docs/handbook/rotated_hopper_270.webp differ
diff --git a/docs/handbook/rotated_hopper_90.webp b/docs/handbook/rotated_hopper_90.webp
new file mode 100644
index 000000000..9a5f70b20
Binary files /dev/null and b/docs/handbook/rotated_hopper_90.webp differ
diff --git a/docs/handbook/show_hopper.webp b/docs/handbook/show_hopper.webp
new file mode 100644
index 000000000..5cb73325b
Binary files /dev/null and b/docs/handbook/show_hopper.webp differ
diff --git a/docs/handbook/text-anchors.rst b/docs/handbook/text-anchors.rst
index 3a9572ab2..48de4bc95 100644
--- a/docs/handbook/text-anchors.rst
+++ b/docs/handbook/text-anchors.rst
@@ -132,7 +132,7 @@ of the two lines.
 
 .. comment: Image generated with ../example/anchors.py
 
-.. image:: ../example/anchors.png
+.. image:: ../example/anchors.webp
     :alt: Text anchor examples
     :align: center
 
diff --git a/docs/handbook/thumbnail_hopper.jpg b/docs/handbook/thumbnail_hopper.jpg
new file mode 100644
index 000000000..8c10589c2
Binary files /dev/null and b/docs/handbook/thumbnail_hopper.jpg differ
diff --git a/docs/handbook/transformed_hopper.webp b/docs/handbook/transformed_hopper.webp
new file mode 100644
index 000000000..be5e90f96
Binary files /dev/null and b/docs/handbook/transformed_hopper.webp differ
diff --git a/docs/handbook/tutorial.rst b/docs/handbook/tutorial.rst
index 50133f15e..3df8e0d20 100644
--- a/docs/handbook/tutorial.rst
+++ b/docs/handbook/tutorial.rst
@@ -26,7 +26,7 @@ image. If the image was not read from a file, it is set to None. The size
 attribute is a 2-tuple containing width and height (in pixels). The
 :py:attr:`~PIL.Image.Image.mode` attribute defines the number and names of the
 bands in the image, and also the pixel type and depth. Common modes are “L”
-(luminance) for greyscale images, “RGB” for true color images, and “CMYK” for
+(luminance) for grayscale images, “RGB” for true color images, and “CMYK” for
 pre-press images.
 
 If the file cannot be opened, an :py:exc:`OSError` exception is raised.
@@ -37,6 +37,9 @@ example, let’s display the image we just loaded::
 
     >>> im.show()
 
+.. image:: show_hopper.webp
+    :align: center
+
 .. note::
 
     The standard version of :py:meth:`~PIL.Image.Image.show` is not very
@@ -79,6 +82,9 @@ Convert files to JPEG
             except OSError:
                 print("cannot convert", infile)
 
+.. image:: ../../Tests/images/hopper.jpg
+    :align: center
+
 A second argument can be supplied to the :py:meth:`~PIL.Image.Image.save`
 method which explicitly specifies a file format. If you use a non-standard
 extension, you must always specify the format this way:
@@ -103,6 +109,9 @@ Create JPEG thumbnails
             except OSError:
                 print("cannot create thumbnail for", infile)
 
+.. image:: thumbnail_hopper.jpg
+    :align: center
+
 It is important to note that the library doesn’t decode or load the raster data
 unless it really has to. When you open a file, the file header is read to
 determine the file format and extract things like mode, size, and other
@@ -140,16 +149,19 @@ Copying a subrectangle from an image
 
 ::
 
-    box = (100, 100, 400, 400)
+    box = (0, 0, 64, 64)
     region = im.crop(box)
 
 The region is defined by a 4-tuple, where coordinates are (left, upper, right,
 lower). The Python Imaging Library uses a coordinate system with (0, 0) in the
 upper left corner. Also note that coordinates refer to positions between the
-pixels, so the region in the above example is exactly 300x300 pixels.
+pixels, so the region in the above example is exactly 64x64 pixels.
 
 The region could now be processed in a certain manner and pasted back.
 
+.. image:: cropped_hopper.webp
+    :align: center
+
 Processing a subrectangle, and pasting it back
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
@@ -164,6 +176,9 @@ modes of the original image and the region do not need to match. If they don’t
 the region is automatically converted before being pasted (see the section on
 :ref:`color-transforms` below for details).
 
+.. image:: pasted_hopper.webp
+    :align: center
+
 Here’s an additional example:
 
 Rolling an image
@@ -171,7 +186,7 @@ Rolling an image
 
 ::
 
-    def roll(im, delta):
+    def roll(im: Image.Image, delta: int) -> Image.Image:
         """Roll an image sideways."""
         xsize, ysize = im.size
 
@@ -186,6 +201,9 @@ Rolling an image
 
         return im
 
+.. image:: rolled_hopper.webp
+    :align: center
+
 Or if you would like to merge two images into a wider image:
 
 Merging images
@@ -193,7 +211,7 @@ Merging images
 
 ::
 
-    def merge(im1, im2):
+    def merge(im1: Image.Image, im2: Image.Image) -> Image.Image:
         w = im1.size[0] + im2.size[0]
         h = max(im1.size[1], im2.size[1])
         im = Image.new("RGBA", (w, h))
@@ -203,6 +221,9 @@ Merging images
 
         return im
 
+.. image:: merged_hopper.webp
+    :align: center
+
 For more advanced tricks, the paste method can also take a transparency mask as
 an optional argument. In this mask, the value 255 indicates that the pasted
 image is opaque in that position (that is, the pasted image should be used as
@@ -229,6 +250,9 @@ Note that for a single-band image, :py:meth:`~PIL.Image.Image.split` returns
 the image itself. To work with individual color bands, you may want to convert
 the image to “RGB” first.
 
+.. image:: rebanded_hopper.webp
+    :align: center
+
 Geometrical transforms
 ----------------------
 
@@ -245,6 +269,9 @@ Simple geometry transforms
     out = im.resize((128, 128))
     out = im.rotate(45) # degrees counter-clockwise
 
+.. image:: rotated_hopper_90.webp
+    :align: center
+
 To rotate the image in 90 degree steps, you can either use the
 :py:meth:`~PIL.Image.Image.rotate` method or the
 :py:meth:`~PIL.Image.Image.transpose` method. The latter can also be used to
@@ -256,11 +283,38 @@ Transposing an image
 ::
 
     out = im.transpose(Image.Transpose.FLIP_LEFT_RIGHT)
+
+.. image:: flip_left_right_hopper.webp
+    :align: center
+
+::
+
     out = im.transpose(Image.Transpose.FLIP_TOP_BOTTOM)
+
+.. image:: flip_top_bottom_hopper.webp
+    :align: center
+
+::
+
     out = im.transpose(Image.Transpose.ROTATE_90)
+
+.. image:: rotated_hopper_90.webp
+    :align: center
+
+::
+
     out = im.transpose(Image.Transpose.ROTATE_180)
+
+.. image:: rotated_hopper_180.webp
+    :align: center
+
+::
+
     out = im.transpose(Image.Transpose.ROTATE_270)
 
+.. image:: rotated_hopper_270.webp
+    :align: center
+
 ``transpose(ROTATE)`` operations can also be performed identically with
 :py:meth:`~PIL.Image.Image.rotate` operations, provided the ``expand`` flag is
 true, to provide for the same changes to the image's size.
@@ -268,6 +322,37 @@ true, to provide for the same changes to the image's size.
 A more general form of image transformations can be carried out via the
 :py:meth:`~PIL.Image.Image.transform` method.
 
+Relative resizing
+^^^^^^^^^^^^^^^^^
+
+Instead of calculating the size of the new image when resizing, you can also
+choose to resize relative to a given size.
+
+::
+
+    from PIL import Image, ImageOps
+    size = (100, 150)
+    with Image.open("hopper.webp") as im:
+        ImageOps.contain(im, size).save("imageops_contain.webp")
+        ImageOps.cover(im, size).save("imageops_cover.webp")
+        ImageOps.fit(im, size).save("imageops_fit.webp")
+        ImageOps.pad(im, size, color="#f00").save("imageops_pad.webp")
+
+        # thumbnail() can also be used,
+        # but will modify the image object in place
+        im.thumbnail(size)
+        im.save("image_thumbnail.webp")
+
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
+|                | :py:meth:`~PIL.Image.Image.thumbnail`      | :py:meth:`~PIL.ImageOps.contain`            | :py:meth:`~PIL.ImageOps.cover`            | :py:meth:`~PIL.ImageOps.fit`            | :py:meth:`~PIL.ImageOps.pad`            |
++================+============================================+=============================================+===========================================+=========================================+=========================================+
+|Given size      | ``(100, 150)``                             | ``(100, 150)``                              | ``(100, 150)``                            | ``(100, 150)``                          | ``(100, 150)``                          |
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
+|Resulting image | .. image:: ../example/image_thumbnail.webp | .. image:: ../example/imageops_contain.webp | .. image:: ../example/imageops_cover.webp | .. image:: ../example/imageops_fit.webp | .. image:: ../example/imageops_pad.webp |
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
+|Resulting size  | ``100×100``                                | ``100×100``                                 | ``150×150``                               | ``100×150``                             | ``100×150``                             |
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
+
 .. _color-transforms:
 
 Color transforms
@@ -311,6 +396,9 @@ Applying filters
     from PIL import ImageFilter
     out = im.filter(ImageFilter.DETAIL)
 
+.. image:: enhanced_hopper.webp
+    :align: center
+
 Point Operations
 ^^^^^^^^^^^^^^^^
 
@@ -324,8 +412,11 @@ Applying point transforms
 
 ::
 
-    # multiply each pixel by 1.2
-    out = im.point(lambda i: i * 1.2)
+    # multiply each pixel by 20
+    out = im.point(lambda i: i * 20)
+
+.. image:: transformed_hopper.webp
+    :align: center
 
 Using the above technique, you can quickly apply any simple expression to an
 image. You can also combine the :py:meth:`~PIL.Image.Image.point` and
@@ -357,6 +448,9 @@ Note the syntax used to create the mask::
 
     imout = im.point(lambda i: expression and 255)
 
+.. image:: masked_hopper.webp
+    :align: center
+
 Python only evaluates the portion of a logical expression as is necessary to
 determine the outcome, and returns the last value examined as the result of the
 expression. So if the expression above is false (0), Python does not look at
@@ -381,6 +475,10 @@ Enhancing images
     enh = ImageEnhance.Contrast(im)
     enh.enhance(1.3).show("30% more contrast")
 
+
+.. image:: contrasted_hopper.jpg
+    :align: center
+
 Image sequences
 ---------------
 
@@ -413,10 +511,43 @@ Reading sequences
 As seen in this example, you’ll get an :py:exc:`EOFError` exception when the
 sequence ends.
 
+Writing sequences
+^^^^^^^^^^^^^^^^^
+
+You can create animated GIFs with Pillow, e.g.
+
+::
+
+    from PIL import Image
+
+    # List of image filenames
+    image_filenames = [
+        "hopper.jpg",
+        "rotated_hopper_270.jpg",
+        "rotated_hopper_180.jpg",
+        "rotated_hopper_90.jpg",
+    ]
+
+    # Open images and create a list
+    images = [Image.open(filename) for filename in image_filenames]
+
+    # Save the images as an animated GIF
+    images[0].save(
+        "animated_hopper.gif",
+        save_all=True,
+        append_images=images[1:],
+        duration=500,  # duration of each frame in milliseconds
+        loop=0,  # loop forever
+    )
+
+
+.. image:: animated_hopper.gif
+    :align: center
+
 The following class lets you use the for-statement to loop over the sequence:
 
-Using the ImageSequence Iterator class
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Using the :py:class:`~PIL.ImageSequence.Iterator` class
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 ::
 
@@ -436,25 +567,61 @@ Drawing PostScript
 
 ::
 
-    from PIL import Image
-    from PIL import PSDraw
+    from PIL import Image, PSDraw
+    import os
 
-    with Image.open("hopper.ppm") as im:
-        title = "hopper"
-        box = (1 * 72, 2 * 72, 7 * 72, 10 * 72)  # in points
+    # Define the PostScript file
+    ps_file = open("hopper.ps", "wb")
 
-        ps = PSDraw.PSDraw()  # default is sys.stdout or sys.stdout.buffer
-        ps.begin_document(title)
+    # Create a PSDraw object
+    ps = PSDraw.PSDraw(ps_file)
 
-        # draw the image (75 dpi)
-        ps.image(box, im, 75)
-        ps.rectangle(box)
+    # Start the document
+    ps.begin_document()
 
-        # draw title
-        ps.setfont("HelveticaNarrow-Bold", 36)
-        ps.text((3 * 72, 4 * 72), title)
+    # Set the text to be drawn
+    text = "Hopper"
 
-        ps.end_document()
+    # Define the PostScript font
+    font_name = "Helvetica-Narrow-Bold"
+    font_size = 36
+
+    # Calculate text size (approximation as PSDraw doesn't provide direct method)
+    # Assuming average character width as 0.6 of the font size
+    text_width = len(text) * font_size * 0.6
+    text_height = font_size
+
+    # Set the position (top-center)
+    page_width, page_height = 595, 842  # A4 size in points
+    text_x = (page_width - text_width) // 2
+    text_y = page_height - text_height - 50  # Distance from the top of the page
+
+    # Load the image
+    image_path = "hopper.ppm"  # Update this with your image path
+    with Image.open(image_path) as im:
+        # Resize the image if it's too large
+        im.thumbnail((page_width - 100, page_height // 2))
+
+        # Define the box where the image will be placed
+        img_x = (page_width - im.width) // 2
+        img_y = text_y + text_height - 200  # 200 points below the text
+
+        # Draw the image (75 dpi)
+        ps.image((img_x, img_y, img_x + im.width, img_y + im.height), im, 75)
+
+    # Draw the text
+    ps.setfont(font_name, font_size)
+    ps.text((text_x, text_y), text)
+
+    # End the document
+    ps.end_document()
+    ps_file.close()
+
+.. image:: hopper_ps.webp
+
+.. note::
+
+    PostScript converted to PDF for display purposes
 
 More on reading images
 ----------------------
@@ -511,7 +678,7 @@ Reading from URL
 
     from PIL import Image
     from urllib.request import urlopen
-    url = "https://python-pillow.org/images/pillow-logo.png"
+    url = "https://python-pillow.org/assets/images/pillow-logo.png"
     img = Image.open(urlopen(url))
 
 
@@ -522,7 +689,7 @@ Reading from a tar archive
 
     from PIL import Image, TarIO
 
-    fp = TarIO.TarIO("Tests/images/hopper.tar", "hopper.jpg")
+    fp = TarIO.TarIO("hopper.tar", "hopper.jpg")
     im = Image.open(fp)
 
 
@@ -537,8 +704,7 @@ in the current directory can be saved as JPEGs at reduced quality.
     import glob
     from PIL import Image
 
-
-    def compress_image(source_path, dest_path):
+    def compress_image(source_path: str, dest_path: str) -> None:
         with Image.open(source_path) as img:
             if img.mode != "RGB":
                 img = img.convert("RGB")
@@ -568,7 +734,7 @@ Controlling the decoder
 Some decoders allow you to manipulate the image while reading it from a file.
 This can often be used to speed up decoding when creating thumbnails (when
 speed is usually more important than quality) and printing to a monochrome
-laser printer (when only a greyscale version of the image is needed).
+laser printer (when only a grayscale version of the image is needed).
 
 The :py:meth:`~PIL.Image.Image.draft` method manipulates an opened but not yet
 loaded image so it as closely as possible matches the given mode and size. This
diff --git a/docs/handbook/writing-your-own-image-plugin.rst b/docs/handbook/writing-your-own-image-plugin.rst
index 75604e17a..2e853224d 100644
--- a/docs/handbook/writing-your-own-image-plugin.rst
+++ b/docs/handbook/writing-your-own-image-plugin.rst
@@ -26,14 +26,14 @@ Pillow decodes files in two stages:
    it.
 
 An image plugin should contain a format handler derived from the
-:py:class:`PIL.ImageFile.ImageFile` base class. This class should
-provide an ``_open`` method, which reads the file header and
-sets up at least the :py:attr:`~PIL.Image.Image.mode` and
-:py:attr:`~PIL.Image.Image.size` attributes. To be able to load the
-file, the method must also create a list of ``tile`` descriptors,
-which contain a decoder name, extents of the tile, and
-any decoder-specific data. The format handler class must be explicitly
-registered, via a call to the :py:mod:`~PIL.Image` module.
+:py:class:`PIL.ImageFile.ImageFile` base class. This class should provide an
+``_open`` method, which reads the file header and set at least the internal
+``_size`` and ``_mode`` attributes so that :py:attr:`~PIL.Image.Image.mode` and
+:py:attr:`~PIL.Image.Image.size` are populated. To be able to load the file,
+the method must also create a list of ``tile`` descriptors, which contain a
+decoder name, extents of the tile, and any decoder-specific data. The format
+handler class must be explicitly registered, via a call to the
+:py:mod:`~PIL.Image` module.
 
 .. note:: For performance reasons, it is important that the
   ``_open`` method quickly rejects files that do not have the
@@ -45,7 +45,7 @@ Example
 The following plugin supports a simple format, which has a 128-byte header
 consisting of the words “SPAM” followed by the width, height, and pixel size in
 bits. The header fields are separated by spaces. The image data follows
-directly after the header, and can be either bi-level, greyscale, or 24-bit
+directly after the header, and can be either bi-level, grayscale, or 24-bit
 true color.
 
 **SpamImagePlugin.py**::
@@ -53,7 +53,7 @@ true color.
     from PIL import Image, ImageFile
 
 
-    def _accept(prefix):
+    def _accept(prefix: bytes) -> bool:
         return prefix[:4] == b"SPAM"
 
 
@@ -62,7 +62,7 @@ true color.
         format = "SPAM"
         format_description = "Spam raster image"
 
-        def _open(self):
+        def _open(self) -> None:
 
             header = self.fp.read(128).split()
 
@@ -72,17 +72,17 @@ true color.
             # mode setting
             bits = int(header[3])
             if bits == 1:
-                self.mode = "1"
+                self._mode = "1"
             elif bits == 8:
-                self.mode = "L"
+                self._mode = "L"
             elif bits == 24:
-                self.mode = "RGB"
+                self._mode = "RGB"
             else:
                 msg = "unknown number of bits"
                 raise SyntaxError(msg)
 
             # data descriptor
-            self.tile = [("raw", (0, 0) + self.size, 128, (self.mode, 0, 1))]
+            self.tile = [ImageFile._Tile("raw", (0, 0) + self.size, 128, (self.mode, 0, 1))]
 
 
     Image.register_open(SpamImageFile.format, SpamImageFile, _accept)
@@ -96,13 +96,13 @@ true color.
     )
 
 
-The format handler must always set the
-:py:attr:`~PIL.Image.Image.size` and :py:attr:`~PIL.Image.Image.mode`
-attributes. If these are not set, the file cannot be opened. To
-simplify the plugin, the calling code considers exceptions like
-:py:exc:`SyntaxError`, :py:exc:`KeyError`, :py:exc:`IndexError`,
-:py:exc:`EOFError` and :py:exc:`struct.error` as a failure to identify
-the file.
+The format handler must always set the internal ``_size`` and ``_mode``
+attributes so that :py:attr:`~PIL.Image.Image.size` and
+:py:attr:`~PIL.Image.Image.mode` are populated. If these are not set, the file
+cannot be opened. To simplify the plugin, the calling code considers exceptions
+like :py:exc:`SyntaxError`, :py:exc:`KeyError`, :py:exc:`IndexError`,
+:py:exc:`EOFError` and :py:exc:`struct.error` as a failure to identify the
+file.
 
 Note that the image plugin must be explicitly registered using
 :py:func:`PIL.Image.register_open`. Although not required, it is also a good
@@ -211,9 +211,9 @@ table describes some commonly used **raw modes**:
 | ``1;R``   | | 1-bit reversed bilevel, stored with the leftmost pixel in the   |
 |           | | least significant bit. 0 means black, 1 means white.            |
 +-----------+-------------------------------------------------------------------+
-| ``L``     | 8-bit greyscale. 0 means black, 255 means white.                  |
+| ``L``     | 8-bit grayscale. 0 means black, 255 means white.                  |
 +-----------+-------------------------------------------------------------------+
-| ``L;I``   | 8-bit inverted greyscale. 0 means white, 255 means black.         |
+| ``L;I``   | 8-bit inverted grayscale. 0 means white, 255 means black.         |
 +-----------+-------------------------------------------------------------------+
 | ``P``     | 8-bit palette-mapped image.                                       |
 +-----------+-------------------------------------------------------------------+
diff --git a/docs/index.rst b/docs/index.rst
index 418844ba7..18f5c3d13 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -1,7 +1,7 @@
 Pillow
 ======
 
-Pillow is the friendly PIL fork by `Jeffrey A. Clark (Alex) and contributors <https://github.com/python-pillow/Pillow/graphs/contributors>`_. PIL is the Python Imaging Library by Fredrik Lundh and contributors.
+Pillow is the friendly PIL fork by `Jeffrey A. Clark and contributors <https://github.com/python-pillow/Pillow/graphs/contributors>`_. PIL is the Python Imaging Library by Fredrik Lundh and contributors.
 
 Pillow for enterprise is available via the Tidelift Subscription. `Learn more <https://tidelift.com/subscription/pkg/pypi-pillow?utm_source=pypi-pillow&utm_medium=docs&utm_campaign=enterprise>`_.
 
@@ -37,13 +37,9 @@ Pillow for enterprise is available via the Tidelift Subscription. `Learn more <h
    :target: https://ci.appveyor.com/project/python-pillow/Pillow
    :alt: AppVeyor CI build status (Windows)
 
-.. image:: https://github.com/python-pillow/pillow-wheels/workflows/Wheels/badge.svg
-   :target: https://github.com/python-pillow/pillow-wheels/actions
-   :alt: GitHub Actions wheels build status (Wheels)
-
-.. image:: https://img.shields.io/travis/com/python-pillow/pillow-wheels/main.svg?label=aarch64%20wheels
-   :target: https://app.travis-ci.com/github/python-pillow/pillow-wheels
-   :alt: Travis CI wheels build status (aarch64)
+.. image:: https://github.com/python-pillow/Pillow/workflows/Wheels/badge.svg
+   :target: https://github.com/python-pillow/Pillow/actions/workflows/wheels.yml
+   :alt: GitHub Actions build status (Wheels)
 
 .. image:: https://codecov.io/gh/python-pillow/Pillow/branch/main/graph/badge.svg
    :target: https://app.codecov.io/gh/python-pillow/Pillow
@@ -53,34 +49,30 @@ Pillow for enterprise is available via the Tidelift Subscription. `Learn more <h
    :target: https://zenodo.org/badge/latestdoi/17549/python-pillow/Pillow
    :alt: Zenodo
 
-.. image:: https://tidelift.com/badges/package/pypi/Pillow?style=flat
+.. image:: https://tidelift.com/badges/package/pypi/pillow?style=flat
    :target: https://tidelift.com/subscription/pkg/pypi-pillow?utm_source=pypi-pillow&utm_medium=badge
    :alt: Tidelift
 
 .. image:: https://oss-fuzz-build-logs.storage.googleapis.com/badges/pillow.svg
-   :target: https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:pillow
+   :target: https://issues.oss-fuzz.com/issues?q=title:pillow
    :alt: Fuzzing Status
 
 .. image:: https://img.shields.io/pypi/v/pillow.svg
-   :target: https://pypi.org/project/Pillow/
+   :target: https://pypi.org/project/pillow/
    :alt: Latest PyPI version
 
 .. image:: https://img.shields.io/pypi/dm/pillow.svg
-   :target: https://pypi.org/project/Pillow/
+   :target: https://pypi.org/project/pillow/
    :alt: Number of PyPI downloads
 
-.. image:: https://bestpractices.coreinfrastructure.org/projects/6331/badge
-   :target: https://bestpractices.coreinfrastructure.org/projects/6331
+.. image:: https://www.bestpractices.dev/projects/6331/badge
+   :target: https://www.bestpractices.dev/projects/6331
    :alt: OpenSSF Best Practices
 
 .. image:: https://badges.gitter.im/python-pillow/Pillow.svg
    :target: https://gitter.im/python-pillow/Pillow?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge
    :alt: Join the chat at https://gitter.im/python-pillow/Pillow
 
-.. image:: https://img.shields.io/badge/tweet-on%20Twitter-00aced.svg
-   :target: https://twitter.com/PythonPillow
-   :alt: Follow on https://twitter.com/PythonPillow
-
 .. image:: https://img.shields.io/badge/publish-on%20Mastodon-595aff.svg
    :target: https://fosstodon.org/@pillow
    :alt: Follow on https://fosstodon.org/@pillow
@@ -101,7 +93,7 @@ The core image library is designed for fast access to data stored in a few basic
 .. toctree::
    :maxdepth: 2
 
-   installation.rst
+   installation/index.rst
    handbook/index.rst
    reference/index.rst
    porting.rst
diff --git a/docs/installation.rst b/docs/installation.rst
index 6e47d3cfb..b4bf2fa00 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -1,595 +1,29 @@
+:orphan:
+
 Installation
 ============
 
-Warnings
---------
-
-.. warning:: Pillow and PIL cannot co-exist in the same environment. Before installing Pillow, please uninstall PIL.
-
-.. warning:: Pillow >= 1.0 no longer supports ``import Image``. Please use ``from PIL import Image`` instead.
-
-.. warning:: Pillow >= 2.1.0 no longer supports ``import _imaging``. Please use ``from PIL.Image import core as _imaging`` instead.
-
-Python Support
---------------
-
-Pillow supports these Python versions.
-
-.. csv-table:: Newer versions
-   :file: newer-versions.csv
-   :header-rows: 1
-
-.. csv-table:: Older versions
-   :file: older-versions.csv
-   :header-rows: 1
-
-.. _Linux Installation:
-.. _macOS Installation:
-.. _Windows Installation:
-.. _FreeBSD Installation:
-
 Basic Installation
 ------------------
 
-.. note::
+.. Note:: This section has moved to :ref:`basic-installation`. Please update references accordingly.
 
-    The following instructions will install Pillow with support for
-    most common image formats. See :ref:`external-libraries` for a
-    full list of external libraries supported.
+Python Support
+--------------
 
-Install Pillow with :command:`pip`::
-
-    python3 -m pip install --upgrade pip
-    python3 -m pip install --upgrade Pillow
-
-
-.. tab:: Linux
-
-    We provide binaries for Linux for each of the supported Python
-    versions in the manylinux wheel format. These include support for all
-    optional libraries except libimagequant. Raqm support requires
-    FriBiDi to be installed separately::
-
-        python3 -m pip install --upgrade pip
-        python3 -m pip install --upgrade Pillow
-
-    Most major Linux distributions, including Fedora, Ubuntu and ArchLinux
-    also include Pillow in packages that previously contained PIL e.g.
-    ``python-imaging``. Debian splits it into two packages, ``python3-pil``
-    and ``python3-pil.imagetk``.
-
-.. tab:: macOS
-
-    We provide binaries for macOS for each of the supported Python
-    versions in the wheel format. These include support for all optional
-    libraries except libimagequant. Raqm support requires
-    FriBiDi to be installed separately::
-
-        python3 -m pip install --upgrade pip
-        python3 -m pip install --upgrade Pillow
-
-    While we provide binaries for both x86-64 and arm64, we do not provide universal2
-    binaries. However, it is simple to combine our current binaries to create one::
-
-        python3 -m pip download --only-binary=:all: --platform macosx_10_10_x86_64 Pillow
-        python3 -m pip download --only-binary=:all: --platform macosx_11_0_arm64 Pillow
-        python3 -m pip install delocate
-
-    Then, with the names of the downloaded wheels, use Python to combine them::
-
-        from delocate.fuse import fuse_wheels
-        fuse_wheels('Pillow-9.4.0-2-cp39-cp39-macosx_10_10_x86_64.whl', 'Pillow-9.4.0-cp39-cp39-macosx_11_0_arm64.whl', 'Pillow-9.4.0-cp39-cp39-macosx_11_0_universal2.whl')
-
-.. tab:: Windows
-
-    We provide Pillow binaries for Windows compiled for the matrix of
-    supported Pythons in both 32 and 64-bit versions in the wheel format.
-    These binaries include support for all optional libraries except
-    libimagequant and libxcb. Raqm support requires
-    FriBiDi to be installed separately::
-
-        python3 -m pip install --upgrade pip
-        python3 -m pip install --upgrade Pillow
-
-    To install Pillow in MSYS2, see `Building on Windows using MSYS2/MinGW`_.
-
-.. tab:: FreeBSD
-
-    Pillow can be installed on FreeBSD via the official Ports or Packages systems:
-
-    **Ports**::
-
-        cd /usr/ports/graphics/py-pillow && make install clean
-
-    **Packages**::
-
-        pkg install py38-pillow
-
-    .. note::
-
-        The `Pillow FreeBSD port
-        <https://www.freshports.org/graphics/py-pillow/>`_ and packages
-        are tested by the ports team with all supported FreeBSD versions.
-
-
-.. _Building on Linux:
-.. _Building on macOS:
-.. _Building on Windows:
-.. _Building on Windows using MSYS2/MinGW:
-.. _Building on FreeBSD:
-.. _Building on Android:
-
-Building From Source
---------------------
-
-.. _external-libraries:
-
-External Libraries
-^^^^^^^^^^^^^^^^^^
-
-.. note::
-
-    You **do not need to install all supported external libraries** to
-    use Pillow's basic features. **Zlib** and **libjpeg** are required
-    by default.
-
-.. note::
-
-   There are Dockerfiles in our `Docker images repo
-   <https://github.com/python-pillow/docker-images>`_ to install the
-   dependencies for some operating systems.
-
-Many of Pillow's features require external libraries:
-
-* **libjpeg** provides JPEG functionality.
-
-  * Pillow has been tested with libjpeg versions **6b**, **8**, **9-9d** and
-    libjpeg-turbo version **8**.
-  * Starting with Pillow 3.0.0, libjpeg is required by default, but
-    may be disabled with the ``--disable-jpeg`` flag.
-
-* **zlib** provides access to compressed PNGs
-
-  * Starting with Pillow 3.0.0, zlib is required by default, but may
-    be disabled with the ``--disable-zlib`` flag.
-
-* **libtiff** provides compressed TIFF functionality
-
-  * Pillow has been tested with libtiff versions **3.x** and **4.0-4.5**
-
-* **libfreetype** provides type related services
-
-* **littlecms** provides color management
-
-  * Pillow version 2.2.1 and below uses liblcms1, Pillow 2.3.0 and
-    above uses liblcms2. Tested with **1.19** and **2.7-2.15**.
-
-* **libwebp** provides the WebP format.
-
-  * Pillow has been tested with version **0.1.3**, which does not read
-    transparent WebP files. Versions **0.3.0** and above support
-    transparency.
-
-* **tcl/tk** provides support for tkinter bitmap and photo images.
-
-* **openjpeg** provides JPEG 2000 functionality.
-
-  * Pillow has been tested with openjpeg **2.0.0**, **2.1.0**, **2.3.1**,
-    **2.4.0** and **2.5.0**.
-  * Pillow does **not** support the earlier **1.5** series which ships
-    with Debian Jessie.
-
-* **libimagequant** provides improved color quantization
-
-  * Pillow has been tested with libimagequant **2.6-4.2**
-  * Libimagequant is licensed GPLv3, which is more restrictive than
-    the Pillow license, therefore we will not be distributing binaries
-    with libimagequant support enabled.
-
-* **libraqm** provides complex text layout support.
-
-  * libraqm provides bidirectional text support (using FriBiDi),
-    shaping (using HarfBuzz), and proper script itemization. As a
-    result, Raqm can support most writing systems covered by Unicode.
-  * libraqm depends on the following libraries: FreeType, HarfBuzz,
-    FriBiDi, make sure that you install them before installing libraqm
-    if not available as package in your system.
-  * Setting text direction or font features is not supported without libraqm.
-  * Pillow wheels since version 8.2.0 include a modified version of libraqm that
-    loads libfribidi at runtime if it is installed.
-    On Windows this requires compiling FriBiDi and installing ``fribidi.dll``
-    into a directory listed in the `Dynamic-link library search order (Microsoft Learn)
-    <https://learn.microsoft.com/en-us/windows/win32/dlls/dynamic-link-library-search-order#search-order-for-unpackaged-apps>`_
-    (``fribidi-0.dll`` or ``libfribidi-0.dll`` are also detected).
-    See `Build Options`_ to see how to build this version.
-  * Previous versions of Pillow (5.0.0 to 8.1.2) linked libraqm dynamically at runtime.
-
-* **libxcb** provides X11 screengrab support.
-
-.. tab:: Linux
-
-    If you didn't build Python from source, make sure you have Python's
-    development libraries installed.
-
-    In Debian or Ubuntu::
-
-        sudo apt-get install python3-dev python3-setuptools
-
-    In Fedora, the command is::
-
-        sudo dnf install python3-devel redhat-rpm-config
-
-    In Alpine, the command is::
-
-        sudo apk add python3-dev py3-setuptools
-
-    .. Note:: ``redhat-rpm-config`` is required on Fedora 23, but not earlier versions.
-
-    Prerequisites for **Ubuntu 16.04 LTS - 22.04 LTS** are installed with::
-
-        sudo apt-get install libtiff5-dev libjpeg8-dev libopenjp2-7-dev zlib1g-dev \
-            libfreetype6-dev liblcms2-dev libwebp-dev tcl8.6-dev tk8.6-dev python3-tk \
-            libharfbuzz-dev libfribidi-dev libxcb1-dev
-
-    To install libraqm, ``sudo apt-get install meson`` and then see
-    ``depends/install_raqm.sh``.
-
-    Prerequisites are installed on recent **Red Hat**, **CentOS** or **Fedora** with::
-
-        sudo dnf install libtiff-devel libjpeg-devel openjpeg2-devel zlib-devel \
-            freetype-devel lcms2-devel libwebp-devel tcl-devel tk-devel \
-            harfbuzz-devel fribidi-devel libraqm-devel libimagequant-devel libxcb-devel
-
-    Note that the package manager may be yum or DNF, depending on the
-    exact distribution.
-
-    Prerequisites are installed for **Alpine** with::
-
-        sudo apk add tiff-dev jpeg-dev openjpeg-dev zlib-dev freetype-dev lcms2-dev \
-            libwebp-dev tcl-dev tk-dev harfbuzz-dev fribidi-dev libimagequant-dev \
-            libxcb-dev libpng-dev
-
-    See also the ``Dockerfile``\s in the Test Infrastructure repo
-    (https://github.com/python-pillow/docker-images) for a known working
-    install process for other tested distros.
-
-.. tab:: macOS
-
-    The Xcode command line tools are required to compile portions of
-    Pillow. The tools are installed by running ``xcode-select --install``
-    from the command line. The command line tools are required even if you
-    have the full Xcode package installed.  It may be necessary to run
-    ``sudo xcodebuild -license`` to accept the license prior to using the
-    tools.
-
-    The easiest way to install external libraries is via `Homebrew
-    <https://brew.sh/>`_. After you install Homebrew, run::
-
-        brew install libjpeg libtiff little-cms2 openjpeg webp
-
-    To install libraqm on macOS use Homebrew to install its dependencies::
-
-        brew install freetype harfbuzz fribidi
-
-    Then see ``depends/install_raqm_cmake.sh`` to install libraqm.
-
-.. tab:: Windows
-
-    We recommend you use prebuilt wheels from PyPI.
-    If you wish to compile Pillow manually, you can use the build scripts
-    in the ``winbuild`` directory used for CI testing and development.
-    These scripts require Visual Studio 2017 or newer and NASM.
-
-    The scripts also install Pillow from the local copy of the source code, so the
-    `Installing`_ instructions will not be necessary afterwards.
-
-.. tab:: Windows using MSYS2/MinGW
-
-    The following instructions are for the **MSYS2 UCRT64** system.
-    To build Pillow on one of the other MSYS2 systems, replace all occurences of
-    ``mingw-w64-ucrt-x86_64`` with the corresponding prefix:
-
-    .. list-table::
-        :header-rows: 1
-
-        * - MSYS2 system
-          - Package prefix
-        * - **UCRT64**
-          - ``mingw-w64-ucrt-x86_64``
-        * - **CLANG64**
-          - ``mingw-w64-clang-x86_64``
-        * - **MINGW64**
-          - ``mingw-w64-x86_64``
-
-    Installing in **MSYS2 MSYS** is not supported.
-
-    Make sure you have Python and GCC installed::
-
-        pacman -S \
-            mingw-w64-ucrt-x86_64-gcc \
-            mingw-w64-ucrt-x86_64-python3 \
-            mingw-w64-ucrt-x86_64-python3-pip \
-            mingw-w64-ucrt-x86_64-python3-setuptools
-
-    Prerequisites are installed on **MSYS2 UCRT64** with::
-
-        pacman -S \
-            mingw-w64-ucrt-x86_64-libjpeg-turbo \
-            mingw-w64-ucrt-x86_64-zlib \
-            mingw-w64-ucrt-x86_64-libtiff \
-            mingw-w64-ucrt-x86_64-freetype \
-            mingw-w64-ucrt-x86_64-lcms2 \
-            mingw-w64-ucrt-x86_64-libwebp \
-            mingw-w64-ucrt-x86_64-openjpeg2 \
-            mingw-w64-ucrt-x86_64-libimagequant \
-            mingw-w64-ucrt-x86_64-libraqm
-
-    https://www.msys2.org/docs/python/ states that setuptools >= 60 does not work with
-    MSYS2. To workaround this, before installing Pillow you must run::
-
-        export SETUPTOOLS_USE_DISTUTILS=stdlib
-
-.. tab:: FreeBSD
-
-    .. Note:: Only FreeBSD 10 and 11 tested
-
-    Make sure you have Python's development libraries installed::
-
-        sudo pkg install python3
-
-    Prerequisites are installed on **FreeBSD 10 or 11** with::
-
-        sudo pkg install jpeg-turbo tiff webp lcms2 freetype2 openjpeg harfbuzz fribidi libxcb
-
-    Then see ``depends/install_raqm_cmake.sh`` to install libraqm.
-
-.. tab:: Android
-
-    Basic Android support has been added for compilation within the Termux
-    environment. The dependencies can be installed by::
-
-        pkg install -y python ndk-sysroot clang make \
-            libjpeg-turbo
-
-Installing
-^^^^^^^^^^
-
-Once you have installed the prerequisites, to install Pillow from the source
-code on PyPI, run::
-
-    python3 -m pip install --upgrade pip
-    python3 -m pip install --upgrade Pillow --no-binary :all:
-
-If the prerequisites are installed in the standard library locations
-for your machine (e.g. :file:`/usr` or :file:`/usr/local`), no
-additional configuration should be required. If they are installed in
-a non-standard location, you may need to configure setuptools to use
-those locations by editing :file:`setup.py` or
-:file:`setup.cfg`, or by adding environment variables on the command
-line::
-
-    CFLAGS="-I/usr/pkg/include" python3 -m pip install --upgrade Pillow --no-binary :all:
-
-If Pillow has been previously built without the required
-prerequisites, it may be necessary to manually clear the pip cache or
-build without cache using the ``--no-cache-dir`` option to force a
-build with newly installed external libraries.
-
-If you would like to install from a local copy of the source code instead, you
-can clone from GitHub with ``git clone https://github.com/python-pillow/Pillow``
-or download and extract the `compressed archive from PyPI`_.
-
-After navigating to the Pillow directory, run::
-
-    python3 -m pip install --upgrade pip
-    python3 -m pip install .
-
-.. _compressed archive from PyPI: https://pypi.org/project/Pillow/#files
-
-Build Options
-"""""""""""""
-
-* Environment variable: ``MAX_CONCURRENCY=n``. Pillow can use
-  multiprocessing to build the extension. Setting ``MAX_CONCURRENCY``
-  sets the number of CPUs to use, or can disable parallel building by
-  using a setting of 1. By default, it uses 4 CPUs, or if 4 are not
-  available, as many as are present.
-
-* Config settings: ``-C zlib=disable``, ``-C jpeg=disable``,
-  ``-C tiff=disable``, ``-C freetype=disable``, ``-C raqm=disable``,
-  ``-C lcms=disable``, ``-C webp=disable``, ``-C webpmux=disable``,
-  ``-C jpeg2000=disable``, ``-C imagequant=disable``, ``-C xcb=disable``.
-  Disable building the corresponding feature even if the development
-  libraries are present on the building machine.
-
-* Config settings: ``-C zlib=enable``, ``-C jpeg=enable``,
-  ``-C tiff=enable``, ``-C freetype=enable``, ``-C raqm=enable``,
-  ``-C lcms=enable``, ``-C webp=enable``, ``-C webpmux=enable``,
-  ``-C jpeg2000=enable``, ``-C imagequant=enable``, ``-C xcb=enable``.
-  Require that the corresponding feature is built. The build will raise
-  an exception if the libraries are not found. Webpmux (WebP metadata)
-  relies on WebP support. Tcl and Tk also must be used together.
-
-* Config settings: ``-C raqm=vendor``, ``-C fribidi=vendor``.
-  These flags are used to compile a modified version of libraqm and
-  a shim that dynamically loads libfribidi at runtime. These are
-  used to compile the standard Pillow wheels. Compiling libraqm requires
-  a C99-compliant compiler.
-
-* Build flag: ``-C platform-guessing=disable``. Skips all of the
-  platform dependent guessing of include and library directories for
-  automated build systems that configure the proper paths in the
-  environment variables (e.g. Buildroot).
-
-* Build flag: ``-C debug=true``. Adds a debugging flag to the include and
-  library search process to dump all paths searched for and found to
-  stdout.
-
-
-Sample usage::
-
-    python3 -m pip install --upgrade Pillow -C [feature]=enable
+.. Note:: This section has moved to :ref:`python-support`. Please update references accordingly.
 
 Platform Support
 ----------------
 
-Current platform support for Pillow. Binary distributions are
-contributed for each release on a volunteer basis, but the source
-should compile and run everywhere platform support is listed. In
-general, we aim to support all current versions of Linux, macOS, and
-Windows.
+.. Note:: This section has moved to :ref:`platform-support`. Please update references accordingly.
 
-Continuous Integration Targets
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Building From Source
+--------------------
 
-These platforms are built and tested for every change.
-
-+----------------------------------+----------------------------+---------------------+
-| Operating system                 | Tested Python versions     | Tested architecture |
-+==================================+============================+=====================+
-| Alpine                           | 3.9                        | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| Amazon Linux 2                   | 3.9                        | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| Amazon Linux 2023                | 3.9                        | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| Arch                             | 3.9                        | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| CentOS 7                         | 3.9                        | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| CentOS Stream 8                  | 3.9                        | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| CentOS Stream 9                  | 3.9                        | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| Debian 11 Bullseye               | 3.9                        | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| Debian 12 Bookworm               | 3.11                       | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| Fedora 37                        | 3.11                       | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| Fedora 38                        | 3.11                       | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| Gentoo                           | 3.9                        | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| macOS 12 Monterey                | 3.8, 3.9, 3.10, 3.11,      | x86-64              |
-|                                  | 3.12, PyPy3                |                     |
-+----------------------------------+----------------------------+---------------------+
-| Ubuntu Linux 20.04 LTS (Focal)   | 3.8                        | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| Ubuntu Linux 22.04 LTS (Jammy)   | 3.8, 3.9, 3.10, 3.11,      | x86-64              |
-|                                  | 3.12, PyPy3                |                     |
-|                                  +----------------------------+---------------------+
-|                                  | 3.10                       | arm64v8, ppc64le,   |
-|                                  |                            | s390x               |
-+----------------------------------+----------------------------+---------------------+
-| Windows Server 2016              | 3.8                        | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| Windows Server 2022              | 3.8, 3.9, 3.10, 3.11,      | x86-64              |
-|                                  | 3.12, PyPy3                |                     |
-|                                  +----------------------------+---------------------+
-|                                  | 3.9 (CLANG64, MINGW64)     | x86-64              |
-|                                  +----------------------------+---------------------+
-|                                  | 3.8, 3.9 (Cygwin)          | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-
-
-Other Platforms
-^^^^^^^^^^^^^^^
-
-These platforms have been reported to work at the versions mentioned.
-
-.. note::
-
-    Contributors please test Pillow on your platform then update this
-    document and send a pull request.
-
-+----------------------------------+---------------------------+------------------+--------------+
-| Operating system                 | | Tested Python           | | Latest tested  | | Tested     |
-|                                  | | versions                | | Pillow version | | processors |
-+==================================+===========================+==================+==============+
-| macOS 13 Ventura                 | 3.7, 3.8, 3.9, 3.10, 3.11 | 9.5.0            |arm           |
-+----------------------------------+---------------------------+------------------+--------------+
-| macOS 12 Big Sur                 | 3.7, 3.8, 3.9, 3.10, 3.11 | 9.3.0            |arm           |
-+----------------------------------+---------------------------+------------------+--------------+
-| macOS 11 Big Sur                 | 3.7, 3.8, 3.9, 3.10       | 8.4.0            |arm           |
-|                                  +---------------------------+------------------+--------------+
-|                                  | 3.7, 3.8, 3.9, 3.10, 3.11 | 9.4.0            |x86-64        |
-|                                  +---------------------------+------------------+              |
-|                                  | 3.6                       | 8.4.0            |              |
-+----------------------------------+---------------------------+------------------+--------------+
-| macOS 10.15 Catalina             | 3.6, 3.7, 3.8, 3.9        | 8.3.2            |x86-64        |
-|                                  +---------------------------+------------------+              |
-|                                  | 3.5                       | 7.2.0            |              |
-+----------------------------------+---------------------------+------------------+--------------+
-| macOS 10.14 Mojave               | 3.5, 3.6, 3.7, 3.8        | 7.2.0            |x86-64        |
-|                                  +---------------------------+------------------+              |
-|                                  | 2.7                       | 6.0.0            |              |
-|                                  +---------------------------+------------------+              |
-|                                  | 3.4                       | 5.4.1            |              |
-+----------------------------------+---------------------------+------------------+--------------+
-| macOS 10.13 High Sierra          | 2.7, 3.4, 3.5, 3.6        | 4.2.1            |x86-64        |
-+----------------------------------+---------------------------+------------------+--------------+
-| macOS 10.12 Sierra               | 2.7, 3.4, 3.5, 3.6        | 4.1.1            |x86-64        |
-+----------------------------------+---------------------------+------------------+--------------+
-| Mac OS X 10.11 El Capitan        | 2.7, 3.4, 3.5, 3.6, 3.7   | 5.4.1            |x86-64        |
-|                                  +---------------------------+------------------+              |
-|                                  | 3.3                       | 4.1.0            |              |
-+----------------------------------+---------------------------+------------------+--------------+
-| Mac OS X 10.9 Mavericks          | 2.7, 3.2, 3.3, 3.4        | 3.0.0            |x86-64        |
-+----------------------------------+---------------------------+------------------+--------------+
-| Mac OS X 10.8 Mountain Lion      | 2.6, 2.7, 3.2, 3.3        |                  |x86-64        |
-+----------------------------------+---------------------------+------------------+--------------+
-| Redhat Linux 6                   | 2.6                       |                  |x86           |
-+----------------------------------+---------------------------+------------------+--------------+
-| CentOS 6.3                       | 2.7, 3.3                  |                  |x86           |
-+----------------------------------+---------------------------+------------------+--------------+
-| CentOS 8                         | 3.9                       | 9.0.0            |x86-64        |
-+----------------------------------+---------------------------+------------------+--------------+
-| Fedora 23                        | 2.7, 3.4                  | 3.1.0            |x86-64        |
-+----------------------------------+---------------------------+------------------+--------------+
-| Ubuntu Linux 12.04 LTS (Precise) | | 2.6, 3.2, 3.3, 3.4, 3.5 | 3.4.1            |x86,x86-64    |
-|                                  | | PyPy5.3.1, PyPy3 v2.4.0 |                  |              |
-|                                  +---------------------------+------------------+--------------+
-|                                  | 2.7                       | 4.3.0            |x86-64        |
-|                                  +---------------------------+------------------+--------------+
-|                                  | 2.7, 3.2                  | 3.4.1            |ppc           |
-+----------------------------------+---------------------------+------------------+--------------+
-| Ubuntu Linux 10.04 LTS (Lucid)   | 2.6                       | 2.3.0            |x86,x86-64    |
-+----------------------------------+---------------------------+------------------+--------------+
-| Debian 8.2 Jessie                | 2.7, 3.4                  | 3.1.0            |x86-64        |
-+----------------------------------+---------------------------+------------------+--------------+
-| Raspbian Jessie                  | 2.7, 3.4                  | 3.1.0            |arm           |
-+----------------------------------+---------------------------+------------------+--------------+
-| Raspbian Stretch                 | 2.7, 3.5                  | 4.0.0            |arm           |
-+----------------------------------+---------------------------+------------------+--------------+
-| Raspberry Pi OS                  | 3.6, 3.7, 3.8, 3.9        | 8.2.0            |arm           |
-|                                  +---------------------------+------------------+              |
-|                                  | 2.7                       | 6.2.2            |              |
-+----------------------------------+---------------------------+------------------+--------------+
-| Gentoo Linux                     | 2.7, 3.2                  | 2.1.0            |x86-64        |
-+----------------------------------+---------------------------+------------------+--------------+
-| FreeBSD 11.1                     | 2.7, 3.4, 3.5, 3.6        | 4.3.0            |x86-64        |
-+----------------------------------+---------------------------+------------------+--------------+
-| FreeBSD 10.3                     | 2.7, 3.4, 3.5             | 4.2.0            |x86-64        |
-+----------------------------------+---------------------------+------------------+--------------+
-| FreeBSD 10.2                     | 2.7, 3.4                  | 3.1.0            |x86-64        |
-+----------------------------------+---------------------------+------------------+--------------+
-| Windows 10                       | 3.7                       | 7.1.0            |x86-64        |
-+----------------------------------+---------------------------+------------------+--------------+
-| Windows 10/Cygwin 3.3            | 3.6, 3.7, 3.8, 3.9        | 8.4.0            |x86-64        |
-+----------------------------------+---------------------------+------------------+--------------+
-| Windows 8.1 Pro                  | 2.6, 2.7, 3.2, 3.3, 3.4   | 2.4.0            |x86,x86-64    |
-+----------------------------------+---------------------------+------------------+--------------+
-| Windows 8 Pro                    | 2.6, 2.7, 3.2, 3.3, 3.4a3 | 2.2.0            |x86,x86-64    |
-+----------------------------------+---------------------------+------------------+--------------+
-| Windows 7 Professional           | 3.7                       | 7.0.0            |x86,x86-64    |
-+----------------------------------+---------------------------+------------------+--------------+
-| Windows Server 2008 R2 Enterprise| 3.3                       |                  |x86-64        |
-+----------------------------------+---------------------------+------------------+--------------+
+.. Note:: This section has moved to :ref:`building-from-source`. Please update references accordingly.
 
 Old Versions
 ------------
 
-You can download old distributions from the `release history at PyPI
-<https://pypi.org/project/Pillow/#history>`_ and by direct URL access
-eg. https://pypi.org/project/Pillow/1.0/.
+.. Note:: This section has moved to :ref:`old-versions`. Please update references accordingly.
diff --git a/docs/installation/basic-installation.rst b/docs/installation/basic-installation.rst
new file mode 100644
index 000000000..989f72ddd
--- /dev/null
+++ b/docs/installation/basic-installation.rst
@@ -0,0 +1,97 @@
+.. raw:: html
+
+    <script>
+    document.addEventListener('DOMContentLoaded', function() {
+      activateTab(getOS());
+    });
+    </script>
+
+.. _basic-installation:
+
+Basic Installation
+==================
+
+.. note::
+
+    The following instructions will install Pillow with support for
+    most common image formats. See :ref:`external-libraries` for a
+    full list of external libraries supported.
+
+Install Pillow with :command:`pip`::
+
+    python3 -m pip install --upgrade pip
+    python3 -m pip install --upgrade Pillow
+
+Optionally, install :pypi:`defusedxml` for Pillow to read XMP data,
+and :pypi:`olefile` for Pillow to read FPX and MIC images::
+
+    python3 -m pip install --upgrade defusedxml olefile
+
+
+.. tab:: Linux
+
+    We provide binaries for Linux for each of the supported Python
+    versions in the manylinux wheel format. These include support for all
+    optional libraries except libimagequant. Raqm support requires
+    FriBiDi to be installed separately::
+
+        python3 -m pip install --upgrade pip
+        python3 -m pip install --upgrade Pillow
+
+    Most major Linux distributions, including Fedora, Ubuntu and ArchLinux
+    also include Pillow in packages that previously contained PIL e.g.
+    ``python-imaging``. Debian splits it into two packages, ``python3-pil``
+    and ``python3-pil.imagetk``.
+
+.. tab:: macOS
+
+    We provide binaries for macOS for each of the supported Python
+    versions in the wheel format. These include support for all optional
+    libraries except libimagequant. Raqm support requires
+    FriBiDi to be installed separately::
+
+        python3 -m pip install --upgrade pip
+        python3 -m pip install --upgrade Pillow
+
+    While we provide binaries for both x86-64 and arm64, we do not provide universal2
+    binaries. However, it is simple to combine our current binaries to create one::
+
+        python3 -m pip download --only-binary=:all: --platform macosx_10_10_x86_64 Pillow
+        python3 -m pip download --only-binary=:all: --platform macosx_11_0_arm64 Pillow
+        python3 -m pip install delocate
+
+    Then, with the names of the downloaded wheels, use Python to combine them::
+
+        from delocate.fuse import fuse_wheels
+        fuse_wheels('Pillow-9.4.0-2-cp39-cp39-macosx_10_10_x86_64.whl', 'Pillow-9.4.0-cp39-cp39-macosx_11_0_arm64.whl', 'Pillow-9.4.0-cp39-cp39-macosx_11_0_universal2.whl')
+
+.. tab:: Windows
+
+    We provide Pillow binaries for Windows compiled for the matrix of supported
+    Pythons in the wheel format. These include x86, x86-64 and arm64 versions.
+    These binaries include support
+    for all optional libraries except libimagequant and libxcb. Raqm support
+    requires FriBiDi to be installed separately::
+
+        python3 -m pip install --upgrade pip
+        python3 -m pip install --upgrade Pillow
+
+    To install Pillow in MSYS2, see :ref:`building-from-source`.
+
+.. tab:: FreeBSD
+
+    Pillow can be installed on FreeBSD via the official Ports or Packages systems:
+
+    **Ports**::
+
+        cd /usr/ports/graphics/py-pillow && make install clean
+
+    **Packages**::
+
+        pkg install py38-pillow
+
+    .. note::
+
+        The `Pillow FreeBSD port
+        <https://www.freshports.org/graphics/py-pillow/>`_ and packages
+        are tested by the ports team with all supported FreeBSD versions.
diff --git a/docs/installation/building-from-source.rst b/docs/installation/building-from-source.rst
new file mode 100644
index 000000000..99d5a1617
--- /dev/null
+++ b/docs/installation/building-from-source.rst
@@ -0,0 +1,314 @@
+.. raw:: html
+
+    <script>
+    document.addEventListener('DOMContentLoaded', function() {
+      activateTab(getOS());
+    });
+    </script>
+
+.. _building-from-source:
+
+Building From Source
+====================
+
+.. _external-libraries:
+
+External Libraries
+------------------
+
+.. note::
+
+    You **do not need to install all supported external libraries** to
+    use Pillow's basic features. **Zlib** and **libjpeg** are required
+    by default.
+
+.. note::
+
+   There are Dockerfiles in our `Docker images repo
+   <https://github.com/python-pillow/docker-images>`_ to install the
+   dependencies for some operating systems.
+
+Many of Pillow's features require external libraries:
+
+* **libjpeg** provides JPEG functionality.
+
+  * Pillow has been tested with libjpeg versions **6b**, **8**, **9-9d** and
+    libjpeg-turbo version **8**.
+  * Starting with Pillow 3.0.0, libjpeg is required by default. It can be
+    disabled with the ``-C jpeg=disable`` flag.
+
+* **zlib** provides access to compressed PNGs
+
+  * Starting with Pillow 3.0.0, zlib is required by default. It can be
+    disabled with the ``-C zlib=disable`` flag.
+
+* **libtiff** provides compressed TIFF functionality
+
+  * Pillow has been tested with libtiff versions **3.x** and **4.0-4.6.0**
+
+* **libfreetype** provides type related services
+
+* **littlecms** provides color management
+
+  * Pillow version 2.2.1 and below uses liblcms1, Pillow 2.3.0 and
+    above uses liblcms2. Tested with **1.19** and **2.7-2.16**.
+
+* **libwebp** provides the WebP format.
+
+* **openjpeg** provides JPEG 2000 functionality.
+
+  * Pillow has been tested with openjpeg **2.0.0**, **2.1.0**, **2.3.1**,
+    **2.4.0**, **2.5.0** and **2.5.2**.
+  * Pillow does **not** support the earlier **1.5** series which ships
+    with Debian Jessie.
+
+* **libimagequant** provides improved color quantization
+
+  * Pillow has been tested with libimagequant **2.6-4.3.3**
+  * Libimagequant is licensed GPLv3, which is more restrictive than
+    the Pillow license, therefore we will not be distributing binaries
+    with libimagequant support enabled.
+
+* **libraqm** provides complex text layout support.
+
+  * libraqm provides bidirectional text support (using FriBiDi),
+    shaping (using HarfBuzz), and proper script itemization. As a
+    result, Raqm can support most writing systems covered by Unicode.
+  * libraqm depends on the following libraries: FreeType, HarfBuzz,
+    FriBiDi, make sure that you install them before installing libraqm
+    if not available as package in your system.
+  * Setting text direction or font features is not supported without libraqm.
+  * Pillow wheels since version 8.2.0 include a modified version of libraqm that
+    loads libfribidi at runtime if it is installed.
+    On Windows this requires compiling FriBiDi and installing ``fribidi.dll``
+    into a directory listed in the `Dynamic-link library search order (Microsoft Learn)
+    <https://learn.microsoft.com/en-us/windows/win32/dlls/dynamic-link-library-search-order#search-order-for-unpackaged-apps>`_
+    (``fribidi-0.dll`` or ``libfribidi-0.dll`` are also detected).
+    See `Build Options`_ to see how to build this version.
+  * Previous versions of Pillow (5.0.0 to 8.1.2) linked libraqm dynamically at runtime.
+
+* **libxcb** provides X11 screengrab support.
+
+.. tab:: Linux
+
+    If you didn't build Python from source, make sure you have Python's
+    development libraries installed.
+
+    In Debian or Ubuntu::
+
+        sudo apt-get install python3-dev python3-setuptools
+
+    In Fedora, the command is::
+
+        sudo dnf install python3-devel redhat-rpm-config
+
+    In Alpine, the command is::
+
+        sudo apk add python3-dev py3-setuptools
+
+    .. Note:: ``redhat-rpm-config`` is required on Fedora 23, but not earlier versions.
+
+    Prerequisites for **Ubuntu 16.04 LTS - 22.04 LTS** are installed with::
+
+        sudo apt-get install libtiff5-dev libjpeg8-dev libopenjp2-7-dev zlib1g-dev \
+            libfreetype6-dev liblcms2-dev libwebp-dev tcl8.6-dev tk8.6-dev python3-tk \
+            libharfbuzz-dev libfribidi-dev libxcb1-dev
+
+    To install libraqm, ``sudo apt-get install meson`` and then see
+    ``depends/install_raqm.sh``.
+
+    Prerequisites are installed on recent **Red Hat**, **CentOS** or **Fedora** with::
+
+        sudo dnf install libtiff-devel libjpeg-devel openjpeg2-devel zlib-devel \
+            freetype-devel lcms2-devel libwebp-devel tcl-devel tk-devel \
+            harfbuzz-devel fribidi-devel libraqm-devel libimagequant-devel libxcb-devel
+
+    Note that the package manager may be yum or DNF, depending on the
+    exact distribution.
+
+    Prerequisites are installed for **Alpine** with::
+
+        sudo apk add tiff-dev jpeg-dev openjpeg-dev zlib-dev freetype-dev lcms2-dev \
+            libwebp-dev tcl-dev tk-dev harfbuzz-dev fribidi-dev libimagequant-dev \
+            libxcb-dev libpng-dev
+
+    See also the ``Dockerfile``\s in the Test Infrastructure repo
+    (https://github.com/python-pillow/docker-images) for a known working
+    install process for other tested distros.
+
+.. tab:: macOS
+
+    The Xcode command line tools are required to compile portions of
+    Pillow. The tools are installed by running ``xcode-select --install``
+    from the command line. The command line tools are required even if you
+    have the full Xcode package installed.  It may be necessary to run
+    ``sudo xcodebuild -license`` to accept the license prior to using the
+    tools.
+
+    The easiest way to install external libraries is via `Homebrew
+    <https://brew.sh/>`_. After you install Homebrew, run::
+
+        brew install libjpeg libraqm libtiff little-cms2 openjpeg webp
+
+.. tab:: Windows
+
+    We recommend you use prebuilt wheels from PyPI.
+    If you wish to compile Pillow manually, you can use the build scripts
+    in the ``winbuild`` directory used for CI testing and development.
+    These scripts require Visual Studio 2017 or newer and NASM.
+
+    The scripts also install Pillow from the local copy of the source code, so the
+    `Installing`_ instructions will not be necessary afterwards.
+
+.. tab:: Windows using MSYS2/MinGW
+
+    The following instructions are for the **MSYS2 UCRT64** system.
+    To build Pillow on one of the other MSYS2 systems, replace all occurences of
+    ``mingw-w64-ucrt-x86_64`` with the corresponding prefix:
+
+    .. list-table::
+        :header-rows: 1
+
+        * - MSYS2 system
+          - Package prefix
+        * - **UCRT64**
+          - ``mingw-w64-ucrt-x86_64``
+        * - **CLANG64**
+          - ``mingw-w64-clang-x86_64``
+        * - **MINGW64**
+          - ``mingw-w64-x86_64``
+
+    Installing in **MSYS2 MSYS** is not supported.
+
+    Make sure you have Python and GCC installed::
+
+        pacman -S \
+            mingw-w64-ucrt-x86_64-gcc \
+            mingw-w64-ucrt-x86_64-python3 \
+            mingw-w64-ucrt-x86_64-python3-pip \
+            mingw-w64-ucrt-x86_64-python3-setuptools
+
+    Prerequisites are installed on **MSYS2 UCRT64** with::
+
+        pacman -S \
+            mingw-w64-ucrt-x86_64-libjpeg-turbo \
+            mingw-w64-ucrt-x86_64-zlib \
+            mingw-w64-ucrt-x86_64-libtiff \
+            mingw-w64-ucrt-x86_64-freetype \
+            mingw-w64-ucrt-x86_64-lcms2 \
+            mingw-w64-ucrt-x86_64-libwebp \
+            mingw-w64-ucrt-x86_64-openjpeg2 \
+            mingw-w64-ucrt-x86_64-libimagequant \
+            mingw-w64-ucrt-x86_64-libraqm
+
+.. tab:: FreeBSD
+
+    .. Note:: Only FreeBSD 10 and 11 tested
+
+    Make sure you have Python's development libraries installed::
+
+        sudo pkg install python3
+
+    Prerequisites are installed on **FreeBSD 10 or 11** with::
+
+        sudo pkg install jpeg-turbo tiff webp lcms2 freetype2 openjpeg harfbuzz fribidi libxcb
+
+    Then see ``depends/install_raqm_cmake.sh`` to install libraqm.
+
+.. tab:: Android
+
+    Basic Android support has been added for compilation within the Termux
+    environment. The dependencies can be installed by::
+
+        pkg install -y python ndk-sysroot clang make \
+            libjpeg-turbo
+
+    This has been tested within the Termux app on ChromeOS, on x86.
+
+Installing
+----------
+
+Once you have installed the prerequisites, to install Pillow from the source
+code on PyPI, run::
+
+    python3 -m pip install --upgrade pip
+    python3 -m pip install --upgrade Pillow --no-binary :all:
+
+If the prerequisites are installed in the standard library locations
+for your machine (e.g. :file:`/usr` or :file:`/usr/local`), no
+additional configuration should be required. If they are installed in
+a non-standard location, you may need to configure setuptools to use
+those locations by editing :file:`setup.py` or
+:file:`pyproject.toml`, or by adding environment variables on the command
+line::
+
+    CFLAGS="-I/usr/pkg/include" python3 -m pip install --upgrade Pillow --no-binary :all:
+
+If Pillow has been previously built without the required
+prerequisites, it may be necessary to manually clear the pip cache or
+build without cache using the ``--no-cache-dir`` option to force a
+build with newly installed external libraries.
+
+If you would like to install from a local copy of the source code instead, you
+can clone from GitHub with ``git clone https://github.com/python-pillow/Pillow``
+or download and extract the `compressed archive from PyPI`_.
+
+After navigating to the Pillow directory, run::
+
+    python3 -m pip install --upgrade pip
+    python3 -m pip install .
+
+.. _compressed archive from PyPI: https://pypi.org/project/pillow/#files
+
+Build Options
+^^^^^^^^^^^^^
+
+* Config setting: ``-C parallel=n``. Can also be given
+  with environment variable: ``MAX_CONCURRENCY=n``. Pillow can use
+  multiprocessing to build the extension. Setting ``-C parallel=n``
+  sets the number of CPUs to use to ``n``, or can disable parallel building by
+  using a setting of 1. By default, it uses 4 CPUs, or if 4 are not
+  available, as many as are present.
+
+* Config settings: ``-C zlib=disable``, ``-C jpeg=disable``,
+  ``-C tiff=disable``, ``-C freetype=disable``, ``-C raqm=disable``,
+  ``-C lcms=disable``, ``-C webp=disable``,
+  ``-C jpeg2000=disable``, ``-C imagequant=disable``, ``-C xcb=disable``.
+  Disable building the corresponding feature even if the development
+  libraries are present on the building machine.
+
+* Config settings: ``-C zlib=enable``, ``-C jpeg=enable``,
+  ``-C tiff=enable``, ``-C freetype=enable``, ``-C raqm=enable``,
+  ``-C lcms=enable``, ``-C webp=enable``,
+  ``-C jpeg2000=enable``, ``-C imagequant=enable``, ``-C xcb=enable``.
+  Require that the corresponding feature is built. The build will raise
+  an exception if the libraries are not found. Tcl and Tk must be used
+  together.
+
+* Config settings: ``-C raqm=vendor``, ``-C fribidi=vendor``.
+  These flags are used to compile a modified version of libraqm and
+  a shim that dynamically loads libfribidi at runtime. These are
+  used to compile the standard Pillow wheels. Compiling libraqm requires
+  a C99-compliant compiler.
+
+* Config setting: ``-C platform-guessing=disable``. Skips all of the
+  platform dependent guessing of include and library directories for
+  automated build systems that configure the proper paths in the
+  environment variables (e.g. Buildroot).
+
+* Config setting: ``-C debug=true``. Adds a debugging flag to the include and
+  library search process to dump all paths searched for and found to stdout.
+
+
+Sample usage::
+
+    python3 -m pip install --upgrade Pillow -C [feature]=enable
+
+.. _old-versions:
+
+Old Versions
+============
+
+You can download old distributions from the `release history at PyPI
+<https://pypi.org/project/pillow/#history>`_ and by direct URL access
+eg. https://pypi.org/project/pillow/1.0/.
diff --git a/docs/installation/index.rst b/docs/installation/index.rst
new file mode 100644
index 000000000..a94204b6b
--- /dev/null
+++ b/docs/installation/index.rst
@@ -0,0 +1,10 @@
+Installation
+============
+
+.. toctree::
+  :maxdepth: 2
+
+  basic-installation
+  python-support
+  platform-support
+  building-from-source
diff --git a/docs/installation/newer-versions.csv b/docs/installation/newer-versions.csv
new file mode 100644
index 000000000..19816af58
--- /dev/null
+++ b/docs/installation/newer-versions.csv
@@ -0,0 +1,9 @@
+Python,3.13,3.12,3.11,3.10,3.9,3.8,3.7,3.6,3.5
+Pillow >= 11,Yes,Yes,Yes,Yes,Yes,,,,
+Pillow 10.1 - 10.4,,Yes,Yes,Yes,Yes,Yes,,,
+Pillow 10.0,,,Yes,Yes,Yes,Yes,,,
+Pillow 9.3 - 9.5,,,Yes,Yes,Yes,Yes,Yes,,
+Pillow 9.0 - 9.2,,,,Yes,Yes,Yes,Yes,,
+Pillow 8.3.2 - 8.4,,,,Yes,Yes,Yes,Yes,Yes,
+Pillow 8.0 - 8.3.1,,,,,Yes,Yes,Yes,Yes,
+Pillow 7.0 - 7.2,,,,,,Yes,Yes,Yes,Yes
diff --git a/docs/older-versions.csv b/docs/installation/older-versions.csv
similarity index 88%
rename from docs/older-versions.csv
rename to docs/installation/older-versions.csv
index 6058f0524..aa696bc18 100644
--- a/docs/older-versions.csv
+++ b/docs/installation/older-versions.csv
@@ -5,4 +5,4 @@ Pillow 5.2 - 5.4,,Yes,Yes,Yes,Yes,,,Yes,,,
 Pillow 5.0 - 5.1,,,Yes,Yes,Yes,,,Yes,,,
 Pillow 4,,,Yes,Yes,Yes,Yes,,Yes,,,
 Pillow 2 - 3,,,,Yes,Yes,Yes,Yes,Yes,Yes,,
-Pillow < 2,,,,,,,,Yes,Yes,Yes,Yes
\ No newline at end of file
+Pillow < 2,,,,,,,,Yes,Yes,Yes,Yes
diff --git a/docs/installation/platform-support.rst b/docs/installation/platform-support.rst
new file mode 100644
index 000000000..af083a0c6
--- /dev/null
+++ b/docs/installation/platform-support.rst
@@ -0,0 +1,168 @@
+.. _platform-support:
+
+Platform Support
+================
+
+Current platform support for Pillow. Binary distributions are
+contributed for each release on a volunteer basis, but the source
+should compile and run everywhere platform support is listed. In
+general, we aim to support all current versions of Linux, macOS, and
+Windows.
+
+Continuous Integration Targets
+------------------------------
+
+These platforms are built and tested for every change.
+
++----------------------------------+----------------------------+---------------------+
+| Operating system                 | Tested Python versions     | Tested architecture |
++==================================+============================+=====================+
+| Alpine                           | 3.12                       | x86-64              |
++----------------------------------+----------------------------+---------------------+
+| Amazon Linux 2                   | 3.9                        | x86-64              |
++----------------------------------+----------------------------+---------------------+
+| Amazon Linux 2023                | 3.9                        | x86-64              |
++----------------------------------+----------------------------+---------------------+
+| Arch                             | 3.12                       | x86-64              |
++----------------------------------+----------------------------+---------------------+
+| CentOS Stream 9                  | 3.9                        | x86-64              |
++----------------------------------+----------------------------+---------------------+
+| Debian 12 Bookworm               | 3.11                       | x86, x86-64         |
++----------------------------------+----------------------------+---------------------+
+| Fedora 40                        | 3.12                       | x86-64              |
++----------------------------------+----------------------------+---------------------+
+| Fedora 41                        | 3.13                       | x86-64              |
++----------------------------------+----------------------------+---------------------+
+| Gentoo                           | 3.12                       | x86-64              |
++----------------------------------+----------------------------+---------------------+
+| macOS 13 Ventura                 | 3.9                        | x86-64              |
++----------------------------------+----------------------------+---------------------+
+| macOS 14 Sonoma                  | 3.10, 3.11, 3.12, 3.13,    | arm64               |
+|                                  | PyPy3                      |                     |
++----------------------------------+----------------------------+---------------------+
+| Ubuntu Linux 22.04 LTS (Jammy)   | 3.9, 3.10, 3.11,           | x86-64              |
+|                                  | 3.12, 3.13, PyPy3          |                     |
+|                                  +----------------------------+---------------------+
+|                                  | 3.10                       | arm64v8             |
++----------------------------------+----------------------------+---------------------+
+| Ubuntu Linux 24.04 LTS (Noble)   | 3.12                       | x86-64, ppc64le,    |
+|                                  |                            | s390x               |
++----------------------------------+----------------------------+---------------------+
+| Windows Server 2019              | 3.9                        | x86-64              |
++----------------------------------+----------------------------+---------------------+
+| Windows Server 2022              | 3.9, 3.10, 3.11,           | x86-64              |
+|                                  | 3.12, 3.13, PyPy3          |                     |
+|                                  +----------------------------+---------------------+
+|                                  | 3.13                       | x86                 |
+|                                  +----------------------------+---------------------+
+|                                  | 3.12 (CLANG64, MINGW64)    | x86-64              |
+|                                  +----------------------------+---------------------+
+|                                  | 3.9 (Cygwin)               | x86-64              |
++----------------------------------+----------------------------+---------------------+
+
+
+Other Platforms
+---------------
+
+These platforms have been reported to work at the versions mentioned.
+
+.. note::
+
+    Contributors please test Pillow on your platform then update this
+    document and send a pull request.
+
++----------------------------------+----------------------------+------------------+--------------+
+| Operating system                 | | Tested Python            | | Latest tested  | | Tested     |
+|                                  | | versions                 | | Pillow version | | processors |
++==================================+============================+==================+==============+
+| macOS 15 Sequoia                 | 3.9, 3.10, 3.11, 3.12, 3.13| 11.0.0           |arm           |
+|                                  +----------------------------+------------------+              |
+|                                  | 3.8                        | 10.4.0           |              |
++----------------------------------+----------------------------+------------------+--------------+
+| macOS 14 Sonoma                  | 3.8, 3.9, 3.10, 3.11, 3.12 | 10.4.0           |arm           |
++----------------------------------+----------------------------+------------------+--------------+
+| macOS 13 Ventura                 | 3.8, 3.9, 3.10, 3.11       | 10.0.1           |arm           |
+|                                  +----------------------------+------------------+              |
+|                                  | 3.7                        | 9.5.0            |              |
++----------------------------------+----------------------------+------------------+--------------+
+| macOS 12 Monterey                | 3.7, 3.8, 3.9, 3.10, 3.11  | 9.3.0            |arm           |
++----------------------------------+----------------------------+------------------+--------------+
+| macOS 11 Big Sur                 | 3.7, 3.8, 3.9, 3.10        | 8.4.0            |arm           |
+|                                  +----------------------------+------------------+--------------+
+|                                  | 3.7, 3.8, 3.9, 3.10, 3.11  | 9.4.0            |x86-64        |
+|                                  +----------------------------+------------------+              |
+|                                  | 3.6                        | 8.4.0            |              |
++----------------------------------+----------------------------+------------------+--------------+
+| macOS 10.15 Catalina             | 3.6, 3.7, 3.8, 3.9         | 8.3.2            |x86-64        |
+|                                  +----------------------------+------------------+              |
+|                                  | 3.5                        | 7.2.0            |              |
++----------------------------------+----------------------------+------------------+--------------+
+| macOS 10.14 Mojave               | 3.5, 3.6, 3.7, 3.8         | 7.2.0            |x86-64        |
+|                                  +----------------------------+------------------+              |
+|                                  | 2.7                        | 6.0.0            |              |
+|                                  +----------------------------+------------------+              |
+|                                  | 3.4                        | 5.4.1            |              |
++----------------------------------+----------------------------+------------------+--------------+
+| macOS 10.13 High Sierra          | 2.7, 3.4, 3.5, 3.6         | 4.2.1            |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
+| macOS 10.12 Sierra               | 2.7, 3.4, 3.5, 3.6         | 4.1.1            |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
+| Mac OS X 10.11 El Capitan        | 2.7, 3.4, 3.5, 3.6, 3.7    | 5.4.1            |x86-64        |
+|                                  +----------------------------+------------------+              |
+|                                  | 3.3                        | 4.1.0            |              |
++----------------------------------+----------------------------+------------------+--------------+
+| Mac OS X 10.9 Mavericks          | 2.7, 3.2, 3.3, 3.4         | 3.0.0            |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
+| Mac OS X 10.8 Mountain Lion      | 2.6, 2.7, 3.2, 3.3         |                  |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
+| Redhat Linux 6                   | 2.6                        |                  |x86           |
++----------------------------------+----------------------------+------------------+--------------+
+| CentOS 6.3                       | 2.7, 3.3                   |                  |x86           |
++----------------------------------+----------------------------+------------------+--------------+
+| CentOS 8                         | 3.9                        | 9.0.0            |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
+| Fedora 23                        | 2.7, 3.4                   | 3.1.0            |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
+| Ubuntu Linux 12.04 LTS (Precise) | | 2.6, 3.2, 3.3, 3.4, 3.5  | 3.4.1            |x86,x86-64    |
+|                                  | | PyPy5.3.1, PyPy3 v2.4.0  |                  |              |
+|                                  +----------------------------+------------------+--------------+
+|                                  | 2.7                        | 4.3.0            |x86-64        |
+|                                  +----------------------------+------------------+--------------+
+|                                  | 2.7, 3.2                   | 3.4.1            |ppc           |
++----------------------------------+----------------------------+------------------+--------------+
+| Ubuntu Linux 10.04 LTS (Lucid)   | 2.6                        | 2.3.0            |x86,x86-64    |
++----------------------------------+----------------------------+------------------+--------------+
+| Debian 8.2 Jessie                | 2.7, 3.4                   | 3.1.0            |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
+| Raspbian Jessie                  | 2.7, 3.4                   | 3.1.0            |arm           |
++----------------------------------+----------------------------+------------------+--------------+
+| Raspbian Stretch                 | 2.7, 3.5                   | 4.0.0            |arm           |
++----------------------------------+----------------------------+------------------+--------------+
+| Raspberry Pi OS                  | 3.6, 3.7, 3.8, 3.9         | 8.2.0            |arm           |
+|                                  +----------------------------+------------------+              |
+|                                  | 2.7                        | 6.2.2            |              |
++----------------------------------+----------------------------+------------------+--------------+
+| Gentoo Linux                     | 2.7, 3.2                   | 2.1.0            |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
+| FreeBSD 11.1                     | 2.7, 3.4, 3.5, 3.6         | 4.3.0            |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
+| FreeBSD 10.3                     | 2.7, 3.4, 3.5              | 4.2.0            |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
+| FreeBSD 10.2                     | 2.7, 3.4                   | 3.1.0            |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
+| Windows 11 23H2                  | 3.9, 3.10, 3.11, 3.12, 3.13| 11.0.0           |arm64         |
++----------------------------------+----------------------------+------------------+--------------+
+| Windows 11 Pro                   | 3.11, 3.12                 | 10.2.0           |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
+| Windows 10                       | 3.7                        | 7.1.0            |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
+| Windows 10/Cygwin 3.3            | 3.6, 3.7, 3.8, 3.9         | 8.4.0            |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
+| Windows 8.1 Pro                  | 2.6, 2.7, 3.2, 3.3, 3.4    | 2.4.0            |x86,x86-64    |
++----------------------------------+----------------------------+------------------+--------------+
+| Windows 8 Pro                    | 2.6, 2.7, 3.2, 3.3, 3.4a3  | 2.2.0            |x86,x86-64    |
++----------------------------------+----------------------------+------------------+--------------+
+| Windows 7 Professional           | 3.7                        | 7.0.0            |x86,x86-64    |
++----------------------------------+----------------------------+------------------+--------------+
+| Windows Server 2008 R2 Enterprise| 3.3                        |                  |x86-64        |
++----------------------------------+----------------------------+------------------+--------------+
diff --git a/docs/installation/python-support.rst b/docs/installation/python-support.rst
new file mode 100644
index 000000000..dd5765b6b
--- /dev/null
+++ b/docs/installation/python-support.rst
@@ -0,0 +1,14 @@
+.. _python-support:
+
+Python Support
+==============
+
+Pillow supports these Python versions.
+
+.. csv-table:: Newer versions
+   :file: newer-versions.csv
+   :header-rows: 1
+
+.. csv-table:: Older versions
+   :file: older-versions.csv
+   :header-rows: 1
diff --git a/docs/newer-versions.csv b/docs/newer-versions.csv
deleted file mode 100644
index d53947ff5..000000000
--- a/docs/newer-versions.csv
+++ /dev/null
@@ -1,7 +0,0 @@
-Python,3.11,3.10,3.9,3.8,3.7,3.6,3.5
-Pillow >= 10,Yes,Yes,Yes,Yes,,,
-Pillow 9.3 - 9.5,Yes,Yes,Yes,Yes,Yes,,
-Pillow 9.0 - 9.2,,Yes,Yes,Yes,Yes,,
-Pillow 8.3.2 - 8.4,,Yes,Yes,Yes,Yes,Yes,
-Pillow 8.0 - 8.3.1,,,Yes,Yes,Yes,Yes,
-Pillow 7.0 - 7.2,,,,Yes,Yes,Yes,Yes
diff --git a/docs/reference/ExifTags.rst b/docs/reference/ExifTags.rst
index 464ab77ea..06965ead3 100644
--- a/docs/reference/ExifTags.rst
+++ b/docs/reference/ExifTags.rst
@@ -4,8 +4,9 @@
 :py:mod:`~PIL.ExifTags` Module
 ==============================
 
-The :py:mod:`~PIL.ExifTags` module exposes several ``enum.IntEnum`` classes
-which provide constants and clear-text names for various well-known EXIF tags.
+The :py:mod:`~PIL.ExifTags` module exposes several :py:class:`enum.IntEnum`
+classes which provide constants and clear-text names for various well-known
+EXIF tags.
 
 .. py:data:: Base
 
diff --git a/docs/reference/Image.rst b/docs/reference/Image.rst
index 41d3b8fce..bc3758218 100644
--- a/docs/reference/Image.rst
+++ b/docs/reference/Image.rst
@@ -93,10 +93,14 @@ Generating images
 Registering plugins
 ^^^^^^^^^^^^^^^^^^^
 
+.. autofunction:: preinit
+.. autofunction:: init
+
 .. note::
 
-    These functions are for use by plugin authors. Application authors can
-    ignore them.
+    These functions are for use by plugin authors. They are called when a
+    plugin is loaded as part of :py:meth:`~preinit()` or :py:meth:`~init()`.
+    Application authors can ignore them.
 
 .. autofunction:: register_open
 .. autofunction:: register_mime
@@ -191,6 +195,7 @@ This helps to get the bounding box coordinates of the input image::
 .. automethod:: PIL.Image.Image.getpalette
 .. automethod:: PIL.Image.Image.getpixel
 .. automethod:: PIL.Image.Image.getprojection
+.. automethod:: PIL.Image.Image.getxmp
 .. automethod:: PIL.Image.Image.histogram
 .. automethod:: PIL.Image.Image.paste
 .. automethod:: PIL.Image.Image.point
@@ -347,6 +352,8 @@ Instances of the :py:class:`Image` class have the following attributes:
 
     .. seealso:: :attr:`~Image.is_animated`, :func:`~Image.seek` and :func:`~Image.tell`
 
+.. autoattribute:: PIL.Image.Image.has_transparency_data
+
 Classes
 -------
 
@@ -355,8 +362,17 @@ Classes
     :undoc-members:
     :show-inheritance:
 .. autoclass:: PIL.Image.ImagePointHandler
+.. autoclass:: PIL.Image.ImagePointTransform
 .. autoclass:: PIL.Image.ImageTransformHandler
 
+Protocols
+---------
+
+.. autoclass:: SupportsArrayInterface
+    :show-inheritance:
+.. autoclass:: SupportsGetData
+    :show-inheritance:
+
 Constants
 ---------
 
@@ -366,6 +382,11 @@ Constants
     Set to 89,478,485, approximately 0.25GB for a 24-bit (3 bpp) image.
     See :py:meth:`~PIL.Image.open` for more information about how this is used.
 
+.. data:: WARN_POSSIBLE_FORMATS
+
+    Set to false. If true, when an image cannot be identified, warnings will be raised
+    from formats that attempted to read the data.
+
 Transpose methods
 ^^^^^^^^^^^^^^^^^
 
@@ -410,7 +431,6 @@ See :ref:`concept-filters` for details.
 .. autoclass:: Resampling
     :members:
     :undoc-members:
-    :noindex:
 
 Dither modes
 ^^^^^^^^^^^^
diff --git a/docs/reference/ImageCms.rst b/docs/reference/ImageCms.rst
index 9b9b5e7b2..96bd14dd3 100644
--- a/docs/reference/ImageCms.rst
+++ b/docs/reference/ImageCms.rst
@@ -8,9 +8,34 @@ The :py:mod:`~PIL.ImageCms` module provides color profile management
 support using the LittleCMS2 color management engine, based on Kevin
 Cazabon's PyCMS library.
 
+.. autoclass:: ImageCmsProfile
+    :members:
+    :special-members: __init__
 .. autoclass:: ImageCmsTransform
+    :members:
+    :undoc-members:
+    :show-inheritance:
 .. autoexception:: PyCMSError
 
+Constants
+---------
+
+.. autoclass:: Intent
+    :members:
+    :member-order: bysource
+    :undoc-members:
+    :show-inheritance:
+.. autoclass:: Direction
+    :members:
+    :member-order: bysource
+    :undoc-members:
+    :show-inheritance:
+.. autoclass:: Flags
+    :members:
+    :member-order: bysource
+    :undoc-members:
+    :show-inheritance:
+
 Functions
 ---------
 
@@ -37,16 +62,18 @@ CmsProfile
 ----------
 
 The ICC color profiles are wrapped in an instance of the class
-:py:class:`CmsProfile`.  The specification ICC.1:2010 contains more
+:py:class:`~core.CmsProfile`.  The specification ICC.1:2010 contains more
 information about the meaning of the values in ICC profiles.
 
 For convenience, all XYZ-values are also given as xyY-values (so they
 can be easily displayed in a chromaticity diagram, for example).
 
+.. py:currentmodule:: PIL.ImageCms.core
 .. py:class:: CmsProfile
+    :canonical: PIL._imagingcms.CmsProfile
 
     .. py:attribute:: creation_date
-        :type: Optional[datetime.datetime]
+        :type: datetime.datetime | None
 
         Date and time this profile was first created (see 7.2.1 of ICC.1:2010).
 
@@ -129,58 +156,58 @@ can be easily displayed in a chromaticity diagram, for example).
         not been calculated (see 7.2.18 of ICC.1:2010).
 
     .. py:attribute:: copyright
-        :type: Optional[str]
+        :type: str | None
 
         The text copyright information for the profile (see 9.2.21 of ICC.1:2010).
 
     .. py:attribute:: manufacturer
-        :type: Optional[str]
+        :type: str | None
 
         The (English) display string for the device manufacturer (see
         9.2.22 of ICC.1:2010).
 
     .. py:attribute:: model
-        :type: Optional[str]
+        :type: str | None
 
         The (English) display string for the device model of the device
         for which this profile is created (see 9.2.23 of ICC.1:2010).
 
     .. py:attribute:: profile_description
-        :type: Optional[str]
+        :type: str | None
 
         The (English) display string for the profile description (see
         9.2.41 of ICC.1:2010).
 
     .. py:attribute:: target
-        :type: Optional[str]
+        :type: str | None
 
         The name of the registered characterization data set, or the
         measurement data for a characterization target (see 9.2.14 of
         ICC.1:2010).
 
     .. py:attribute:: red_colorant
-        :type: Optional[tuple[tuple[float]]]
+        :type: tuple[tuple[float, float, float], tuple[float, float, float]] | None
 
         The first column in the matrix used in matrix/TRC transforms (see 9.2.44 of ICC.1:2010).
 
         The value is in the format ``((X, Y, Z), (x, y, Y))``, if available.
 
     .. py:attribute:: green_colorant
-        :type: Optional[tuple[tuple[float]]]
+        :type: tuple[tuple[float, float, float], tuple[float, float, float]] | None
 
         The second column in the matrix used in matrix/TRC transforms (see 9.2.30 of ICC.1:2010).
 
         The value is in the format ``((X, Y, Z), (x, y, Y))``, if available.
 
     .. py:attribute:: blue_colorant
-        :type: Optional[tuple[tuple[float]]]
+        :type: tuple[tuple[float, float, float], tuple[float, float, float]] | None
 
         The third column in the matrix used in matrix/TRC transforms (see 9.2.4 of ICC.1:2010).
 
         The value is in the format ``((X, Y, Z), (x, y, Y))``, if available.
 
     .. py:attribute:: luminance
-        :type: Optional[tuple[tuple[float]]]
+        :type: tuple[tuple[float, float, float], tuple[float, float, float]] | None
 
         The absolute luminance of emissive devices in candelas per square
         metre as described by the Y channel (see 9.2.32 of ICC.1:2010).
@@ -188,7 +215,7 @@ can be easily displayed in a chromaticity diagram, for example).
         The value is in the format ``((X, Y, Z), (x, y, Y))``, if available.
 
     .. py:attribute:: chromaticity
-        :type: Optional[tuple[tuple[float]]]
+        :type: tuple[tuple[float, float, float], tuple[float, float, float], tuple[float, float, float]] | None
 
         The data of the phosphor/colorant chromaticity set used (red,
         green and blue channels, see 9.2.16 of ICC.1:2010).
@@ -196,7 +223,7 @@ can be easily displayed in a chromaticity diagram, for example).
         The value is in the format ``((x, y, Y), (x, y, Y), (x, y, Y))``, if available.
 
     .. py:attribute:: chromatic_adaption
-        :type: tuple[tuple[float]]
+        :type: tuple[tuple[tuple[float, float, float], tuple[float, float, float], tuple[float, float, float]], tuple[tuple[float, float, float], tuple[float, float, float], tuple[float, float, float]]] | None
 
         The chromatic adaption matrix converts a color measured using the
         actual illumination conditions and relative to the actual adopted
@@ -222,34 +249,34 @@ can be easily displayed in a chromaticity diagram, for example).
         9.2.19 of ICC.1:2010).
 
     .. py:attribute:: colorimetric_intent
-        :type: Optional[str]
+        :type: str | None
 
         4-character string (padded with whitespace) identifying the image
         state of PCS colorimetry produced using the colorimetric intent
         transforms (see 9.2.20 of ICC.1:2010 for details).
 
     .. py:attribute:: perceptual_rendering_intent_gamut
-        :type: Optional[str]
+        :type: str | None
 
         4-character string (padded with whitespace) identifying the (one)
         standard reference medium gamut (see 9.2.37 of ICC.1:2010 for
         details).
 
     .. py:attribute:: saturation_rendering_intent_gamut
-        :type: Optional[str]
+        :type: str | None
 
         4-character string (padded with whitespace) identifying the (one)
         standard reference medium gamut (see 9.2.37 of ICC.1:2010 for
         details).
 
     .. py:attribute:: technology
-        :type: Optional[str]
+        :type: str | None
 
         4-character string (padded with whitespace) identifying the device
         technology (see 9.2.47 of ICC.1:2010 for details).
 
     .. py:attribute:: media_black_point
-        :type: Optional[tuple[tuple[float]]]
+        :type: tuple[tuple[float, float, float], tuple[float, float, float]] | None
 
         This tag specifies the media black point and is used for
         generating absolute colorimetry.
@@ -260,19 +287,19 @@ can be easily displayed in a chromaticity diagram, for example).
         The value is in the format ``((X, Y, Z), (x, y, Y))``, if available.
 
     .. py:attribute:: media_white_point_temperature
-        :type: Optional[float]
+        :type: float | None
 
         Calculates the white point temperature (see the LCMS documentation
         for more information).
 
     .. py:attribute:: viewing_condition
-        :type: Optional[str]
+        :type: str | None
 
         The (English) display string for the viewing conditions (see
         9.2.48 of ICC.1:2010).
 
     .. py:attribute:: screening_description
-        :type: Optional[str]
+        :type: str | None
 
         The (English) display string for the screening conditions.
 
@@ -280,21 +307,21 @@ can be easily displayed in a chromaticity diagram, for example).
         version 4.
 
     .. py:attribute:: red_primary
-        :type: Optional[tuple[tuple[float]]]
+        :type: tuple[tuple[float, float, float], tuple[float, float, float]] | None
 
         The XYZ-transformed of the RGB primary color red (1, 0, 0).
 
         The value is in the format ``((X, Y, Z), (x, y, Y))``, if available.
 
     .. py:attribute:: green_primary
-        :type: Optional[tuple[tuple[float]]]
+        :type: tuple[tuple[float, float, float], tuple[float, float, float]] | None
 
         The XYZ-transformed of the RGB primary color green (0, 1, 0).
 
         The value is in the format ``((X, Y, Z), (x, y, Y))``, if available.
 
     .. py:attribute:: blue_primary
-        :type: Optional[tuple[tuple[float]]]
+        :type: tuple[tuple[float, float, float], tuple[float, float, float]] | None
 
         The XYZ-transformed of the RGB primary color blue (0, 0, 1).
 
@@ -307,7 +334,7 @@ can be easily displayed in a chromaticity diagram, for example).
         documentation on LCMS).
 
     .. py:attribute:: clut
-        :type: dict[tuple[bool]]
+        :type: dict[int, tuple[bool, bool, bool]] | None
 
         Returns a dictionary of all supported intents and directions for
         the CLUT model.
@@ -326,7 +353,7 @@ can be easily displayed in a chromaticity diagram, for example).
         that intent is supported for that direction.
 
     .. py:attribute:: intent_supported
-        :type: dict[tuple[bool]]
+        :type: dict[int, tuple[bool, bool, bool]] | None
 
         Returns a dictionary of all supported intents and directions.
 
@@ -345,7 +372,7 @@ can be easily displayed in a chromaticity diagram, for example).
 
     There is one function defined on the class:
 
-    .. py:method:: is_intent_supported(intent, direction)
+    .. py:method:: is_intent_supported(intent: int, direction: int, /)
 
         Returns if the intent is supported for the given direction.
 
diff --git a/docs/reference/ImageColor.rst b/docs/reference/ImageColor.rst
index 20237eccf..31faeac78 100644
--- a/docs/reference/ImageColor.rst
+++ b/docs/reference/ImageColor.rst
@@ -59,7 +59,7 @@ Functions
 .. py:method:: getcolor(color, mode)
 
     Same as :py:func:`~PIL.ImageColor.getrgb`, but converts the RGB value to a
-    greyscale value if the mode is not color or a palette image. If the string
+    grayscale value if the mode is not color or a palette image. If the string
     cannot be parsed, this function raises a :py:exc:`ValueError` exception.
 
     .. versionadded:: 1.1.4
diff --git a/docs/reference/ImageDraw.rst b/docs/reference/ImageDraw.rst
index 31f63695e..3e9aa73f8 100644
--- a/docs/reference/ImageDraw.rst
+++ b/docs/reference/ImageDraw.rst
@@ -227,6 +227,18 @@ Methods
 
         .. versionadded:: 5.3.0
 
+.. py:method:: ImageDraw.circle(xy, radius, fill=None, outline=None, width=1)
+
+    Draws a circle with a given radius centering on a point.
+
+    .. versionadded:: 10.4.0
+
+    :param xy: The point for the center of the circle, e.g. ``(x, y)``.
+    :param radius: Radius of the circle.
+    :param outline: Color to use for the outline.
+    :param fill: Color to use for the fill.
+    :param width: The line width, in pixels.
+
 .. py:method:: ImageDraw.ellipse(xy, fill=None, outline=None, width=1)
 
     Draws an ellipse inside the given bounding box.
@@ -351,7 +363,7 @@ Methods
 
     Draw a shape.
 
-.. py:method:: ImageDraw.text(xy, text, fill=None, font=None, anchor=None, spacing=4, align="left", direction=None, features=None, language=None, stroke_width=0, stroke_fill=None, embedded_color=False)
+.. py:method:: ImageDraw.text(xy, text, fill=None, font=None, anchor=None, spacing=4, align="left", direction=None, features=None, language=None, stroke_width=0, stroke_fill=None, embedded_color=False, font_size=None)
 
     Draws the string at the given position.
 
@@ -362,9 +374,10 @@ Methods
     :param fill: Color to use for the text.
     :param font: An :py:class:`~PIL.ImageFont.ImageFont` instance.
     :param anchor: The text anchor alignment. Determines the relative location of
-                   the anchor to the text. The default alignment is top left.
-                   See :ref:`text-anchors` for valid values. This parameter is
-                   ignored for non-TrueType fonts.
+                   the anchor to the text. The default alignment is top left,
+                   specifically ``la`` for horizontal text and ``lt`` for
+                   vertical text. See :ref:`text-anchors` for details.
+                   This parameter is ignored for non-TrueType fonts.
 
                     .. note:: This parameter was present in earlier versions
                               of Pillow, but implemented only in version 8.0.0.
@@ -416,8 +429,14 @@ Methods
 
                     .. versionadded:: 8.0.0
 
+    :param font_size: If ``font`` is not provided, then the size to use for the default
+                      font.
+                      Keyword-only argument.
 
-.. py:method:: ImageDraw.multiline_text(xy, text, fill=None, font=None, anchor=None, spacing=4, align="left", direction=None, features=None, language=None, stroke_width=0, stroke_fill=None, embedded_color=False)
+                    .. versionadded:: 10.1.0
+
+
+.. py:method:: ImageDraw.multiline_text(xy, text, fill=None, font=None, anchor=None, spacing=4, align="left", direction=None, features=None, language=None, stroke_width=0, stroke_fill=None, embedded_color=False, font_size=None)
 
     Draws the string at the given position.
 
@@ -427,9 +446,10 @@ Methods
     :param font: An :py:class:`~PIL.ImageFont.ImageFont` instance.
 
     :param anchor: The text anchor alignment. Determines the relative location of
-                   the anchor to the text. The default alignment is top left.
-                   See :ref:`text-anchors` for valid values. This parameter is
-                   ignored for non-TrueType fonts.
+                   the anchor to the text. The default alignment is top left,
+                   specifically ``la`` for horizontal text and ``lt`` for
+                   vertical text. See :ref:`text-anchors` for details.
+                   This parameter is ignored for non-TrueType fonts.
 
                     .. note:: This parameter was present in earlier versions
                               of Pillow, but implemented only in version 8.0.0.
@@ -477,7 +497,13 @@ Methods
 
                      .. versionadded:: 8.0.0
 
-.. py:method:: ImageDraw.textlength(text, font=None, direction=None, features=None, language=None, embedded_color=False)
+    :param font_size: If ``font`` is not provided, then the size to use for the default
+                      font.
+                      Keyword-only argument.
+
+                    .. versionadded:: 10.1.0
+
+.. py:method:: ImageDraw.textlength(text, font=None, direction=None, features=None, language=None, embedded_color=False, font_size=None)
 
     Returns length (in pixels with 1/64 precision) of given text when rendered
     in font with provided direction, features, and language.
@@ -538,9 +564,15 @@ Methods
                      It should be a `BCP 47 language code`_.
                      Requires libraqm.
     :param embedded_color: Whether to use font embedded color glyphs (COLR, CBDT, SBIX).
-    :return: Width for horizontal, height for vertical text.
+    :param font_size: If ``font`` is not provided, then the size to use for the default
+                      font.
+                      Keyword-only argument.
 
-.. py:method:: ImageDraw.textbbox(xy, text, font=None, anchor=None, spacing=4, align="left", direction=None, features=None, language=None, stroke_width=0, embedded_color=False)
+                    .. versionadded:: 10.1.0
+
+    :return: Either width for horizontal text, or height for vertical text.
+
+.. py:method:: ImageDraw.textbbox(xy, text, font=None, anchor=None, spacing=4, align="left", direction=None, features=None, language=None, stroke_width=0, embedded_color=False, font_size=None)
 
     Returns bounding box (in pixels) of given text relative to given anchor
     when rendered in font with provided direction, features, and language.
@@ -558,9 +590,10 @@ Methods
                  :py:meth:`~PIL.ImageDraw.ImageDraw.multiline_textbbox`.
     :param font: A :py:class:`~PIL.ImageFont.FreeTypeFont` instance.
     :param anchor: The text anchor alignment. Determines the relative location of
-                   the anchor to the text. The default alignment is top left.
-                   See :ref:`text-anchors` for valid values. This parameter is
-                   ignored for non-TrueType fonts.
+                   the anchor to the text. The default alignment is top left,
+                   specifically ``la`` for horizontal text and ``lt`` for
+                   vertical text. See :ref:`text-anchors` for details.
+                   This parameter is ignored for non-TrueType fonts.
     :param spacing: If the text is passed on to
                     :py:meth:`~PIL.ImageDraw.ImageDraw.multiline_textbbox`,
                     the number of pixels between lines.
@@ -588,9 +621,15 @@ Methods
                      Requires libraqm.
     :param stroke_width: The width of the text stroke.
     :param embedded_color: Whether to use font embedded color glyphs (COLR, CBDT, SBIX).
+    :param font_size: If ``font`` is not provided, then the size to use for the default
+                      font.
+                      Keyword-only argument.
+
+                    .. versionadded:: 10.1.0
+
     :return: ``(left, top, right, bottom)`` bounding box
 
-.. py:method:: ImageDraw.multiline_textbbox(xy, text, font=None, anchor=None, spacing=4, align="left", direction=None, features=None, language=None, stroke_width=0, embedded_color=False)
+.. py:method:: ImageDraw.multiline_textbbox(xy, text, font=None, anchor=None, spacing=4, align="left", direction=None, features=None, language=None, stroke_width=0, embedded_color=False, font_size=None)
 
     Returns bounding box (in pixels) of given text relative to given anchor
     when rendered in font with provided direction, features, and language.
@@ -606,9 +645,10 @@ Methods
     :param text: Text to be measured.
     :param font: A :py:class:`~PIL.ImageFont.FreeTypeFont` instance.
     :param anchor: The text anchor alignment. Determines the relative location of
-                   the anchor to the text. The default alignment is top left.
-                   See :ref:`text-anchors` for valid values. This parameter is
-                   ignored for non-TrueType fonts.
+                   the anchor to the text. The default alignment is top left,
+                   specifically ``la`` for horizontal text and ``lt`` for
+                   vertical text. See :ref:`text-anchors` for details.
+                   This parameter is ignored for non-TrueType fonts.
     :param spacing: The number of pixels between lines.
     :param align: ``"left"``, ``"center"`` or ``"right"``. Determines the relative alignment of lines.
                   Use the ``anchor`` parameter to specify the alignment to ``xy``.
@@ -632,6 +672,12 @@ Methods
                      Requires libraqm.
     :param stroke_width: The width of the text stroke.
     :param embedded_color: Whether to use font embedded color glyphs (COLR, CBDT, SBIX).
+    :param font_size: If ``font`` is not provided, then the size to use for the default
+                      font.
+                      Keyword-only argument.
+
+                    .. versionadded:: 10.1.0
+
     :return: ``(left, top, right, bottom)`` bounding box
 
 .. py:method:: getdraw(im=None, hints=None)
@@ -645,23 +691,7 @@ Methods
     :param hints: An optional list of hints.
     :returns: A (drawing context, drawing resource factory) tuple.
 
-.. py:method:: floodfill(image, xy, value, border=None, thresh=0)
-
-    .. warning:: This method is experimental.
-
-    Fills a bounded region with a given color.
-
-    :param image: Target image.
-    :param xy: Seed position (a 2-item coordinate tuple).
-    :param value: Fill color.
-    :param border: Optional border value.  If given, the region consists of
-        pixels with a color different from the border color.  If not given,
-        the region consists of pixels having the same color as the seed
-        pixel.
-    :param thresh: Optional threshold value which specifies a maximum
-        tolerable difference of a pixel value from the 'background' in
-        order for it to be replaced. Useful for filling regions of non-
-        homogeneous, but similar, colors.
+.. autofunction:: PIL.ImageDraw.floodfill
 
 .. _BCP 47 language code: https://www.w3.org/International/articles/language-tags/
 .. _OpenType docs: https://learn.microsoft.com/en-us/typography/opentype/spec/featurelist
diff --git a/docs/reference/ImageEnhance.rst b/docs/reference/ImageEnhance.rst
index 457f0d4df..529acad4a 100644
--- a/docs/reference/ImageEnhance.rst
+++ b/docs/reference/ImageEnhance.rst
@@ -58,7 +58,7 @@ method:
 
     This class can be used to control the contrast of an image, similar to the
     contrast control on a TV set. An
-    :ref:`enhancement factor <enhancement-factor>` of 0.0 gives a solid grey
+    :ref:`enhancement factor <enhancement-factor>` of 0.0 gives a solid gray
     image, a factor of 1.0 gives the original image, and greater values
     increase the contrast of the image.
 
diff --git a/docs/reference/ImageFile.rst b/docs/reference/ImageFile.rst
index 047990f1c..64abd71d1 100644
--- a/docs/reference/ImageFile.rst
+++ b/docs/reference/ImageFile.rst
@@ -19,7 +19,7 @@ Example: Parse an image
 
     from PIL import ImageFile
 
-    fp = open("hopper.pgm", "rb")
+    fp = open("hopper.ppm", "rb")
 
     p = ImageFile.Parser()
 
@@ -37,6 +37,11 @@ Example: Parse an image
 Classes
 -------
 
+.. autoclass:: PIL.ImageFile._Tile()
+    :member-order: bysource
+    :members:
+    :show-inheritance:
+
 .. autoclass:: PIL.ImageFile.Parser()
     :members:
 
@@ -57,6 +62,10 @@ Classes
     :undoc-members:
     :show-inheritance:
 
+.. autoclass:: PIL.ImageFile.StubHandler()
+    :members:
+    :show-inheritance:
+
 .. autoclass:: PIL.ImageFile.StubImageFile()
     :members:
     :show-inheritance:
diff --git a/docs/reference/ImageFilter.rst b/docs/reference/ImageFilter.rst
index 044aede62..5f2b6af7c 100644
--- a/docs/reference/ImageFilter.rst
+++ b/docs/reference/ImageFilter.rst
@@ -23,8 +23,7 @@ Example: Filter an image
 Filters
 -------
 
-The current version of the library provides the following set of predefined
-image enhancement filters:
+Pillow provides the following set of predefined image enhancement filters:
 
 * **BLUR**
 * **CONTOUR**
diff --git a/docs/reference/ImageFont.rst b/docs/reference/ImageFont.rst
index 946bd3c4b..d9d9cac6e 100644
--- a/docs/reference/ImageFont.rst
+++ b/docs/reference/ImageFont.rst
@@ -10,7 +10,7 @@ this class store bitmap fonts, and are used with the
 
 PIL uses its own font file format to store bitmap fonts, limited to 256 characters. You can use
 `pilfont.py <https://github.com/python-pillow/pillow-scripts/blob/main/Scripts/pilfont.py>`_
-from `pillow-scripts <https://pypi.org/project/pillow-scripts/>`_ to convert BDF and
+from :pypi:`pillow-scripts` to convert BDF and
 PCF font descriptors (X window font formats) to this format.
 
 Starting with version 1.1.4, PIL can be configured to support TrueType and
@@ -18,6 +18,15 @@ OpenType fonts (as well as other font formats supported by the FreeType
 library). For earlier versions, TrueType support is only available as part of
 the imToolkit package.
 
+.. warning::
+    To protect against potential DOS attacks when using arbitrary strings as
+    text input, Pillow will raise a :py:exc:`ValueError` if the number of characters
+    is over a certain limit, :py:data:`MAX_STRING_LENGTH`.
+
+    This threshold can be changed by setting
+    :py:data:`MAX_STRING_LENGTH`. It can be disabled by setting
+    ``ImageFont.MAX_STRING_LENGTH = None``.
+
 Example
 -------
 
@@ -44,6 +53,7 @@ Functions
 .. autofunction:: PIL.ImageFont.load_path
 .. autofunction:: PIL.ImageFont.truetype
 .. autofunction:: PIL.ImageFont.load_default
+.. autofunction:: PIL.ImageFont.load_default_imagefont
 
 Methods
 -------
@@ -61,15 +71,31 @@ Methods
 Constants
 ---------
 
-.. data:: PIL.ImageFont.Layout.BASIC
+.. class:: Layout
 
-    Use basic text layout for TrueType font.
-    Advanced features such as text direction are not supported.
+    .. py:attribute:: BASIC
 
-.. data:: PIL.ImageFont.Layout.RAQM
+        Use basic text layout for TrueType font.
+        Advanced features such as text direction are not supported.
 
-    Use Raqm text layout for TrueType font.
-    Advanced features are supported.
+    .. py:attribute:: RAQM
 
-    Requires Raqm, you can check support using
-    :py:func:`PIL.features.check_feature` with ``feature="raqm"``.
+        Use Raqm text layout for TrueType font.
+        Advanced features are supported.
+
+        Requires Raqm, you can check support using
+        :py:func:`PIL.features.check_feature` with ``feature="raqm"``.
+
+.. data:: MAX_STRING_LENGTH
+
+    Set to 1,000,000, to protect against potential DOS attacks. Pillow will
+    raise a :py:exc:`ValueError` if the number of characters is over this limit. The
+    check can be disabled by setting ``ImageFont.MAX_STRING_LENGTH = None``.
+
+Dictionaries
+------------
+
+.. autoclass:: Axis
+    :members:
+    :undoc-members:
+    :show-inheritance:
diff --git a/docs/reference/ImageGrab.rst b/docs/reference/ImageGrab.rst
index 0b94032d5..db2987eb0 100644
--- a/docs/reference/ImageGrab.rst
+++ b/docs/reference/ImageGrab.rst
@@ -11,9 +11,9 @@ or the clipboard to a PIL image memory.
 
 .. py:function:: grab(bbox=None, include_layered_windows=False, all_screens=False, xdisplay=None)
 
-    Take a snapshot of the screen. The pixels inside the bounding box are
-    returned as an "RGBA" on macOS, or an "RGB" image otherwise.
-    If the bounding box is omitted, the entire screen is copied.
+    Take a snapshot of the screen. The pixels inside the bounding box are returned as
+    an "RGBA" on macOS, or an "RGB" image otherwise. If the bounding box is omitted,
+    the entire screen is copied, and on macOS, it will be at 2x if on a Retina screen.
 
     On Linux, if ``xdisplay`` is ``None`` and the default X11 display does not return
     a snapshot of the screen, ``gnome-screenshot`` will be used as fallback if it is
@@ -22,7 +22,10 @@ or the clipboard to a PIL image memory.
     .. versionadded:: 1.1.3 (Windows), 3.0.0 (macOS), 7.1.0 (Linux)
 
     :param bbox: What region to copy. Default is the entire screen.
-                 Note that on Windows OS, the top-left point may be negative if ``all_screens=True`` is used.
+                 On macOS, this is not increased to 2x for Retina screens, so the full
+                 width of a Retina screen would be 1440, not 2880.
+                 On Windows, the top-left point may be negative if ``all_screens=True``
+                 is used.
     :param include_layered_windows: Includes layered windows. Windows OS only.
 
         .. versionadded:: 6.1.0
diff --git a/docs/reference/ImageMath.rst b/docs/reference/ImageMath.rst
index 118d988d6..f4e1081e6 100644
--- a/docs/reference/ImageMath.rst
+++ b/docs/reference/ImageMath.rst
@@ -4,9 +4,12 @@
 :py:mod:`~PIL.ImageMath` Module
 ===============================
 
-The :py:mod:`~PIL.ImageMath` module can be used to evaluate “image expressions”. The
-module provides a single :py:meth:`~PIL.ImageMath.eval` function, which takes
-an expression string and one or more images.
+The :py:mod:`~PIL.ImageMath` module can be used to evaluate “image expressions”, that
+can take a number of images and generate a result.
+
+:py:mod:`~PIL.ImageMath` only supports single-layer images. To process multi-band
+images, use the :py:meth:`~PIL.Image.Image.split` method or :py:func:`~PIL.Image.merge`
+function.
 
 Example: Using the :py:mod:`~PIL.ImageMath` module
 --------------------------------------------------
@@ -17,35 +20,71 @@ Example: Using the :py:mod:`~PIL.ImageMath` module
 
     with Image.open("image1.jpg") as im1:
         with Image.open("image2.jpg") as im2:
+            out = ImageMath.lambda_eval(
+              lambda args: args["convert"](args["min"](args["a"], args["b"]), 'L'),
+              a=im1,
+              b=im2
+            )
+            out = ImageMath.unsafe_eval(
+              "convert(min(a, b), 'L')",
+              a=im1,
+              b=im2
+            )
 
-            out = ImageMath.eval("convert(min(a, b), 'L')", a=im1, b=im2)
-            out.save("result.png")
+.. py:function:: lambda_eval(expression, options, **kw)
 
-.. py:function:: eval(expression, environment)
+    Returns the result of an image function.
 
-    Evaluate expression in the given environment.
+    :param expression: A function that receives a dictionary.
+    :param options: Values to add to the function's dictionary. Note that the names
+                    must be valid Python identifiers. Deprecated.
+                    You can instead use one or more keyword arguments, as
+                    shown in the above example.
+    :param \**kw: Values to add to the function's dictionary, mapping image names to
+                 Image instances.
+    :return: An image, an integer value, a floating point value,
+             or a pixel tuple, depending on the expression.
 
-    In the current version, :py:mod:`~PIL.ImageMath` only supports
-    single-layer images. To process multi-band images, use the
-    :py:meth:`~PIL.Image.Image.split` method or :py:func:`~PIL.Image.merge`
-    function.
+.. py:function:: unsafe_eval(expression, options, **kw)
+
+    Evaluates an image expression.
+
+    .. danger::
+        This uses Python's ``eval()`` function to process the expression string,
+        and carries the security risks of doing so. It is not
+        recommended to process expressions without considering this.
+        :py:meth:`lambda_eval` is a more secure alternative.
+
+    :py:mod:`~PIL.ImageMath` only supports single-layer images. To process multi-band
+    images, use the :py:meth:`~PIL.Image.Image.split` method or
+    :py:func:`~PIL.Image.merge` function.
 
     :param expression: A string which uses the standard Python expression
                        syntax. In addition to the standard operators, you can
                        also use the functions described below.
-    :param environment: A dictionary that maps image names to Image instances.
-                        You can use one or more keyword arguments instead of a
-                        dictionary, as shown in the above example. Note that
-                        the names must be valid Python identifiers.
+    :param options: Values to add to the evaluation context. Note that the names must
+                    be valid Python identifiers. Deprecated.
+                    You can instead use one or more keyword arguments, as
+                    shown in the above example.
+    :param \**kw: Values to add to the evaluation context, mapping image names to Image
+                 instances.
     :return: An image, an integer value, a floating point value,
              or a pixel tuple, depending on the expression.
 
 Expression syntax
 -----------------
 
-Expressions are standard Python expressions, but they’re evaluated in a
-non-standard environment. You can use PIL methods as usual, plus the following
-set of operators and functions:
+* :py:meth:`lambda_eval` expressions are functions that receive a dictionary
+  containing images and operators.
+
+* :py:meth:`unsafe_eval` expressions are standard Python expressions,
+  but they’re evaluated in a non-standard environment.
+
+.. danger::
+  :py:meth:`unsafe_eval` uses Python's ``eval()`` function to process the
+  expression string, and carries the security risks of doing so.
+  It is not recommended to process expressions without considering this.
+  :py:meth:`lambda_eval` is a more secure alternative.
 
 Standard Operators
 ^^^^^^^^^^^^^^^^^^
@@ -72,7 +111,7 @@ pixel bits.
 
 Note that the operands are converted to 32-bit signed integers before the
 bitwise operation is applied. This means that you’ll get negative values if
-you invert an ordinary greyscale image. You can use the and (&) operator to
+you invert an ordinary grayscale image. You can use the and (&) operator to
 mask off unwanted bits.
 
 Bitwise operators don’t work on floating point images.
diff --git a/docs/reference/ImageOps.rst b/docs/reference/ImageOps.rst
index d1c43cf60..fcaa3c8f6 100644
--- a/docs/reference/ImageOps.rst
+++ b/docs/reference/ImageOps.rst
@@ -12,14 +12,13 @@ only work on L and RGB images.
 
 .. autofunction:: autocontrast
 .. autofunction:: colorize
-.. autofunction:: contain
-.. autofunction:: pad
 .. autofunction:: crop
 .. autofunction:: scale
+.. autoclass:: SupportsGetMesh
+    :show-inheritance:
 .. autofunction:: deform
 .. autofunction:: equalize
 .. autofunction:: expand
-.. autofunction:: fit
 .. autofunction:: flip
 .. autofunction:: grayscale
 .. autofunction:: invert
@@ -27,3 +26,38 @@ only work on L and RGB images.
 .. autofunction:: posterize
 .. autofunction:: solarize
 .. autofunction:: exif_transpose
+
+.. _relative-resize:
+
+Resize relative to a given size
+-------------------------------
+
+::
+
+    from PIL import Image, ImageOps
+    size = (100, 150)
+    with Image.open("Tests/images/hopper.webp") as im:
+        ImageOps.contain(im, size).save("imageops_contain.webp")
+        ImageOps.cover(im, size).save("imageops_cover.webp")
+        ImageOps.fit(im, size).save("imageops_fit.webp")
+        ImageOps.pad(im, size, color="#f00").save("imageops_pad.webp")
+
+        # thumbnail() can also be used,
+        # but will modify the image object in place
+        im.thumbnail(size)
+        im.save("image_thumbnail.webp")
+
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
+|                | :py:meth:`~PIL.Image.Image.thumbnail`      | :py:meth:`~PIL.ImageOps.contain`            | :py:meth:`~PIL.ImageOps.cover`            | :py:meth:`~PIL.ImageOps.fit`            | :py:meth:`~PIL.ImageOps.pad`            |
++================+============================================+=============================================+===========================================+=========================================+=========================================+
+|Given size      | ``(100, 150)``                             | ``(100, 150)``                              | ``(100, 150)``                            | ``(100, 150)``                          | ``(100, 150)``                          |
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
+|Resulting image | .. image:: ../example/image_thumbnail.webp | .. image:: ../example/imageops_contain.webp | .. image:: ../example/imageops_cover.webp | .. image:: ../example/imageops_fit.webp | .. image:: ../example/imageops_pad.webp |
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
+|Resulting size  | ``100×100``                                | ``100×100``                                 | ``150×150``                               | ``100×150``                             | ``100×150``                             |
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
+
+.. autofunction:: contain
+.. autofunction:: cover
+.. autofunction:: fit
+.. autofunction:: pad
diff --git a/docs/reference/ImagePath.rst b/docs/reference/ImagePath.rst
index 500096ef7..23544b613 100644
--- a/docs/reference/ImagePath.rst
+++ b/docs/reference/ImagePath.rst
@@ -21,8 +21,8 @@ vector data. Path objects can be passed to the methods on the
 
     The path object implements most parts of the Python sequence interface, and
     behaves like a list of (x, y) pairs. You can use len(), item access, and
-    slicing as usual. However, the current version does not support slice
-    assignment, or item and slice deletion.
+    slicing as usual. However, this does not support slice assignment, or item
+    and slice deletion.
 
     :param xy: A sequence. The sequence can contain 2-tuples [(x, y), ...]
                or a flat list of numbers [x, y, ...].
diff --git a/docs/reference/ImageStat.rst b/docs/reference/ImageStat.rst
index f61d12313..f69466382 100644
--- a/docs/reference/ImageStat.rst
+++ b/docs/reference/ImageStat.rst
@@ -7,67 +7,6 @@
 The :py:mod:`~PIL.ImageStat` module calculates global statistics for an image, or
 for a region of an image.
 
-.. py:class:: Stat(image_or_list, mask=None)
-
-    Calculate statistics for the given image. If a mask is included,
-    only the regions covered by that mask are included in the
-    statistics. You can also pass in a previously calculated histogram.
-
-    :param image: A PIL image, or a precalculated histogram.
-
-        .. note::
-
-            For a PIL image, calculations rely on the
-            :py:meth:`~PIL.Image.Image.histogram` method. The pixel counts are
-            grouped into 256 bins, even if the image has more than 8 bits per
-            channel. So ``I`` and ``F`` mode images have a maximum ``mean``,
-            ``median`` and ``rms`` of 255, and cannot have an ``extrema`` maximum
-            of more than 255.
-
-    :param mask: An optional mask.
-
-    .. py:attribute:: extrema
-
-        Min/max values for each band in the image.
-
-        .. note::
-
-            This relies on the :py:meth:`~PIL.Image.Image.histogram` method, and
-            simply returns the low and high bins used. This is correct for
-            images with 8 bits per channel, but fails for other modes such as
-            ``I`` or ``F``. Instead, use :py:meth:`~PIL.Image.Image.getextrema` to
-            return per-band extrema for the image. This is more correct and
-            efficient because, for non-8-bit modes, the histogram method uses
-            :py:meth:`~PIL.Image.Image.getextrema` to determine the bins used.
-
-    .. py:attribute:: count
-
-        Total number of pixels for each band in the image.
-
-    .. py:attribute:: sum
-
-        Sum of all pixels for each band in the image.
-
-    .. py:attribute:: sum2
-
-        Squared sum of all pixels for each band in the image.
-
-    .. py:attribute:: mean
-
-        Average (arithmetic mean) pixel level for each band in the image.
-
-    .. py:attribute:: median
-
-        Median pixel level for each band in the image.
-
-    .. py:attribute:: rms
-
-        RMS (root-mean-square) for each band in the image.
-
-    .. py:attribute:: var
-
-        Variance for each band in the image.
-
-    .. py:attribute:: stddev
-
-        Standard deviation for each band in the image.
+.. autoclass:: Stat
+    :members:
+    :special-members: __init__
diff --git a/docs/reference/ImageTransform.rst b/docs/reference/ImageTransform.rst
new file mode 100644
index 000000000..5b0a5ce49
--- /dev/null
+++ b/docs/reference/ImageTransform.rst
@@ -0,0 +1,40 @@
+
+.. py:module:: PIL.ImageTransform
+.. py:currentmodule:: PIL.ImageTransform
+
+:py:mod:`~PIL.ImageTransform` Module
+====================================
+
+The :py:mod:`~PIL.ImageTransform` module contains implementations of
+:py:class:`~PIL.Image.ImageTransformHandler` for some of the builtin
+:py:class:`.Image.Transform` methods.
+
+.. autoclass:: Transform
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+.. autoclass:: AffineTransform
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+.. autoclass:: PerspectiveTransform
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+.. autoclass:: ExtentTransform
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+.. autoclass:: QuadTransform
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+.. autoclass:: MeshTransform
+    :members:
+    :undoc-members:
+    :show-inheritance:
diff --git a/docs/reference/PixelAccess.rst b/docs/reference/PixelAccess.rst
index 04d6f5dcd..1ac3d034b 100644
--- a/docs/reference/PixelAccess.rst
+++ b/docs/reference/PixelAccess.rst
@@ -44,42 +44,23 @@ Access using negative indexes is also possible. ::
 -----------------------------
 
 .. class:: PixelAccess
+  :canonical: PIL.Image.core.PixelAccess
 
-  .. method:: __setitem__(self, xy, color):
+  .. method:: __getitem__(self, xy: tuple[int, int]) -> float | tuple[int, ...]
 
-        Modifies the pixel at x,y. The color is given as a single
-        numerical value for single band images, and a tuple for
-        multi-band images
-
-        :param xy: The pixel coordinate, given as (x, y).
-        :param color: The pixel value according to its mode. e.g. tuple (r, g, b) for RGB mode)
-
-  .. method:: __getitem__(self, xy):
-
-       Returns the pixel at x,y. The pixel is returned as a single
-        value for single band images or a tuple for multiple band
-        images
+        Returns the pixel at x,y. The pixel is returned as a single
+        value for single band images or a tuple for multi-band images.
 
         :param xy: The pixel coordinate, given as (x, y).
         :returns: a pixel value for single band images, a tuple of
-          pixel values for multiband images.
+                  pixel values for multiband images.
 
-  .. method:: putpixel(self, xy, color):
+  .. method:: __setitem__(self, xy: tuple[int, int], color: float | tuple[int, ...]) -> None
 
         Modifies the pixel at x,y. The color is given as a single
         numerical value for single band images, and a tuple for
-        multi-band images. In addition to this, RGB and RGBA tuples
-        are accepted for P and PA images.
+        multi-band images.
 
         :param xy: The pixel coordinate, given as (x, y).
-        :param color: The pixel value according to its mode. e.g. tuple (r, g, b) for RGB mode)
-
-  .. method:: getpixel(self, xy):
-
-       Returns the pixel at x,y. The pixel is returned as a single
-        value for single band images or a tuple for multiple band
-        images
-
-        :param xy: The pixel coordinate, given as (x, y).
-        :returns: a pixel value for single band images, a tuple of
-          pixel values for multiband images.
+        :param color: The pixel value according to its mode,
+                      e.g. tuple (r, g, b) for RGB mode.
diff --git a/docs/reference/PyAccess.rst b/docs/reference/PyAccess.rst
deleted file mode 100644
index ed58ca3a5..000000000
--- a/docs/reference/PyAccess.rst
+++ /dev/null
@@ -1,46 +0,0 @@
-.. py:module:: PIL.PyAccess
-.. py:currentmodule:: PIL.PyAccess
-
-:py:mod:`~PIL.PyAccess` Module
-==============================
-
-The :py:mod:`~PIL.PyAccess` module provides a CFFI/Python implementation of the :ref:`PixelAccess`. This implementation is far faster on PyPy than the PixelAccess version.
-
-.. note:: Accessing individual pixels is fairly slow. If you are
-          looping over all of the pixels in an image, there is likely
-          a faster way using other parts of the Pillow API.
-
-          :mod:`~PIL.Image`, :mod:`~PIL.ImageChops` and :mod:`~PIL.ImageOps`
-          have methods for many standard operations. If you wish to perform
-          a custom mapping, check out :py:meth:`~PIL.Image.Image.point`.
-
-Example
--------
-
-The following script loads an image, accesses one pixel from it, then changes it. ::
-
-    from PIL import Image
-
-    with Image.open("hopper.jpg") as im:
-        px = im.load()
-    print(px[4, 4])
-    px[4, 4] = (0, 0, 0)
-    print(px[4, 4])
-
-Results in the following::
-
-    (23, 24, 68)
-    (0, 0, 0)
-
-Access using negative indexes is also possible. ::
-
-    px[-1, -1] = (0, 0, 0)
-    print(px[-1, -1])
-
-
-
-:py:class:`PyAccess` Class
---------------------------
-
-.. autoclass:: PIL.PyAccess.PyAccess()
-    :members:
diff --git a/docs/reference/features.rst b/docs/reference/features.rst
index c66193061..fcff96735 100644
--- a/docs/reference/features.rst
+++ b/docs/reference/features.rst
@@ -54,12 +54,12 @@ Feature version numbers are available only where stated.
 Support for the following features can be checked:
 
 * ``libjpeg_turbo``: (compile time) Whether Pillow was compiled against the libjpeg-turbo version of libjpeg. Compile-time version number is available.
-* ``transp_webp``: Support for transparency in WebP images.
-* ``webp_mux``: (compile time) Support for EXIF data in WebP images.
-* ``webp_anim``: (compile time) Support for animated WebP images.
 * ``raqm``: Raqm library, required for ``ImageFont.Layout.RAQM`` in :py:func:`PIL.ImageFont.truetype`. Run-time version number is available for Raqm 0.7.0 or newer.
 * ``libimagequant``: (compile time) ImageQuant quantization support in :py:func:`PIL.Image.Image.quantize`. Run-time version number is available.
 * ``xcb``: (compile time) Support for X11 in :py:func:`PIL.ImageGrab.grab` via the XCB library.
+* ``transp_webp``: Deprecated. Always ``True`` if WebP module is installed.
+* ``webp_mux``: Deprecated. Always ``True`` if WebP module is installed.
+* ``webp_anim``: Deprecated. Always ``True`` if WebP module is installed.
 
 .. autofunction:: PIL.features.check_feature
 .. autofunction:: PIL.features.version_feature
diff --git a/docs/reference/index.rst b/docs/reference/index.rst
index 5d6affa94..effcd3c46 100644
--- a/docs/reference/index.rst
+++ b/docs/reference/index.rst
@@ -25,13 +25,13 @@ Reference
    ImageShow
    ImageStat
    ImageTk
+   ImageTransform
    ImageWin
    ExifTags
    TiffTags
    JpegPresets
    PSDraw
    PixelAccess
-   PyAccess
    features
    ../PIL
    plugins
diff --git a/docs/reference/internal_design.rst b/docs/reference/internal_design.rst
index 2e2d3322f..99a18e9ea 100644
--- a/docs/reference/internal_design.rst
+++ b/docs/reference/internal_design.rst
@@ -1,5 +1,5 @@
-Internal Reference Docs
-=======================
+Internal Reference
+==================
 
 .. toctree::
   :maxdepth: 2
diff --git a/docs/reference/internal_modules.rst b/docs/reference/internal_modules.rst
index 363a67d9b..93fd82cf9 100644
--- a/docs/reference/internal_modules.rst
+++ b/docs/reference/internal_modules.rst
@@ -25,6 +25,39 @@ Internal Modules
     :undoc-members:
     :show-inheritance:
 
+:mod:`~PIL._typing` Module
+--------------------------
+
+.. module:: PIL._typing
+
+Provides a convenient way to import type hints that are not available
+on some Python versions.
+
+.. py:class:: Buffer
+
+    Typing alias.
+
+.. py:class:: IntegralLike
+
+    Typing alias.
+
+.. py:class:: NumpyArray
+
+    Typing alias.
+
+.. py:class:: StrOrBytesPath
+
+    Typing alias.
+
+.. py:class:: SupportsRead
+
+    An object that supports the read method.
+
+.. py:data:: TypeGuard
+    :value: typing.TypeGuard
+
+    See :py:obj:`typing.TypeGuard`.
+
 :mod:`~PIL._util` Module
 ------------------------
 
@@ -53,3 +86,7 @@ Internal Modules
 
 An internal interface module previously known as :mod:`~PIL._imaging`,
 implemented in :file:`_imaging.c`.
+
+.. py:class:: ImagingCore
+
+    A representation of the image data.
diff --git a/docs/reference/open_files.rst b/docs/reference/open_files.rst
index f31941c9a..730c8da5b 100644
--- a/docs/reference/open_files.rst
+++ b/docs/reference/open_files.rst
@@ -3,7 +3,7 @@
 File Handling in Pillow
 =======================
 
-When opening a file as an image, Pillow requires a filename, ``pathlib.Path``
+When opening a file as an image, Pillow requires a filename, ``os.PathLike``
 object, or a file-like object. Pillow uses the filename or ``Path`` to open a
 file, so for the rest of this article, they will all be treated as a file-like
 object.
diff --git a/docs/reference/plugins.rst b/docs/reference/plugins.rst
index fcf4514a8..454b94d8c 100644
--- a/docs/reference/plugins.rst
+++ b/docs/reference/plugins.rst
@@ -33,6 +33,14 @@ Plugin reference
     :undoc-members:
     :show-inheritance:
 
+:mod:`~PIL.DdsImagePlugin` Module
+---------------------------------
+
+.. automodule:: PIL.DdsImagePlugin
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
 :mod:`~PIL.EpsImagePlugin` Module
 ---------------------------------
 
@@ -177,6 +185,14 @@ Plugin reference
     :undoc-members:
     :show-inheritance:
 
+:mod:`~PIL.MpoImagePlugin` Module
+----------------------------------
+
+.. automodule:: PIL.MpoImagePlugin
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
 :mod:`~PIL.MspImagePlugin` Module
 ---------------------------------
 
diff --git a/docs/releasenotes/10.0.0.rst b/docs/releasenotes/10.0.0.rst
index d33b75e4d..2ea973c5c 100644
--- a/docs/releasenotes/10.0.0.rst
+++ b/docs/releasenotes/10.0.0.rst
@@ -1,14 +1,36 @@
 10.0.0
 ------
 
+Security
+========
+
+Limit size even if one dimension is zero
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+When performing decompression bomb checks, Pillow did not reject images with
+excessive width and zero height, or zero width and excessive height. That has
+now been fixed.
+
+This effectively dates to the PIL fork, since problem images would still have
+been processed before Pillow started checking for decompression bombs.
+
+.. _Added ImageFont.MAX_STRING_LENGTH:
+
+:cve:`2023-44271`: Added ImageFont.MAX_STRING_LENGTH
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+To protect against potential DOS attacks when using arbitrary strings as text
+input, Pillow will now raise a :py:exc:`ValueError` if the number of characters
+passed into ImageFont methods is over a certain limit,
+:py:data:`PIL.ImageFont.MAX_STRING_LENGTH`.
+
+This threshold can be changed by setting
+:py:data:`PIL.ImageFont.MAX_STRING_LENGTH`. It can be disabled by setting
+``ImageFont.MAX_STRING_LENGTH = None``.
+
 Backwards Incompatible Changes
 ==============================
 
-32-bit support
-^^^^^^^^^^^^^^
-
-32-bit architecture is no longer supported and 32-bit wheels are no longer provided.
-
 Categories
 ^^^^^^^^^^
 
@@ -48,7 +70,7 @@ Constants
 ^^^^^^^^^
 
 A number of constants have been removed.
-Instead, ``enum.IntEnum`` classes have been added.
+Instead, :py:class:`enum.IntEnum` classes have been added.
 
 =====================================================  ============================================================
 Removed                                                Use instead
@@ -132,10 +154,15 @@ This undocumented method has been removed.
 Deprecations
 ============
 
-TODO
-^^^^
+PyAccess and Image.USE_CFFI_ACCESS
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-TODO
+Since Pillow's C API is now faster than PyAccess on PyPy,
+:py:mod:`!PyAccess` has been deprecated and will be removed in Pillow
+11.0.0 (2024-10-15). Pillow's C API will now be used by default on PyPy instead.
+
+``Image.USE_CFFI_ACCESS``, for switching from the C API to PyAccess, is
+similarly deprecated.
 
 API Changes
 ===========
@@ -149,22 +176,22 @@ An optional line ``width`` parameter has been added to
 API Additions
 =============
 
-TODO
-^^^^
+Added ``alpha_only`` argument to ``getbbox()``
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-TODO
-
-Security
-========
-
-TODO
-^^^^
-
-TODO
+:py:meth:`~PIL.Image.Image.getbbox` now accepts a keyword argument of
+``alpha_only``. This is an optional flag, defaulting to ``True``. If ``True``
+and the image has an alpha channel, trim transparent pixels. Otherwise, trim
+pixels when all channels are zero.
 
 Other Changes
 =============
 
+32-bit wheels
+^^^^^^^^^^^^^
+
+32-bit wheels are no longer provided.
+
 Support display_jpeg() in IPython
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
@@ -181,4 +208,4 @@ Support reading signed 8-bit TIFF images
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 TIFF images with signed integer data, 8 bits per sample and a photometric
-interpretaton of BlackIsZero can now be read.
+interpretation of BlackIsZero can now be read.
diff --git a/docs/releasenotes/10.0.1.rst b/docs/releasenotes/10.0.1.rst
new file mode 100644
index 000000000..02189d514
--- /dev/null
+++ b/docs/releasenotes/10.0.1.rst
@@ -0,0 +1,20 @@
+10.0.1
+------
+
+Security
+========
+
+:cve:`2023-4863`: Updated install script and updated wheels
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+This release provides an updated install script and updated wheels to
+include libwebp 1.3.2, preventing a potential heap buffer overflow in
+WebP.
+
+Other Changes
+=============
+
+Updated tests to pass with latest zlib version
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The release of zlib 1.3 caused one of the tests in the Pillow test suite to fail.
diff --git a/docs/releasenotes/10.1.0.rst b/docs/releasenotes/10.1.0.rst
new file mode 100644
index 000000000..fd556bdf1
--- /dev/null
+++ b/docs/releasenotes/10.1.0.rst
@@ -0,0 +1,109 @@
+10.1.0
+------
+
+API Changes
+===========
+
+Setting image mode
+^^^^^^^^^^^^^^^^^^
+
+If you attempt to set the mode of an image directly, e.g.
+``im.mode = "RGBA"``, you will now receive an :py:exc:`AttributeError`. This is
+not about removing existing functionality, but instead about raising an
+explicit error to prevent later consequences. The ``convert`` method is the
+correct way to change an image's mode.
+
+Accept a list in getpixel()
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+:py:meth:`~PIL.Image.Image.getpixel` now accepts a list of coordinates, as well
+as a tuple. ::
+
+    from PIL import Image
+    im = Image.new("RGB", (1, 1))
+    im.getpixel((0, 0))
+    im.getpixel([0, 0])
+
+BoxBlur and GaussianBlur allow for different x and y radii
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+:py:class:`~PIL.ImageFilter.BoxBlur` and
+:py:class:`~PIL.ImageFilter.GaussianBlur` now allow a sequence of x and y radii
+to be specified, rather than a single number for both dimensions. ::
+
+    from PIL import ImageFilter
+    ImageFilter.BoxBlur((2, 5))
+    ImageFilter.GaussianBlur((2, 5))
+
+API Additions
+=============
+
+EpsImagePlugin.gs_binary
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+``EpsImagePlugin.gs_windows_binary`` stores the name of the Ghostscript
+executable on Windows. ``EpsImagePlugin.gs_binary`` has now been added for all
+platforms, and can be used to customise the name of the executable, or disable
+use entirely through ``EpsImagePlugin.gs_binary = False``.
+
+has_transparency_data
+^^^^^^^^^^^^^^^^^^^^^
+
+Images now have :py:attr:`~PIL.Image.Image.has_transparency_data` to indicate
+whether the image has transparency data, whether in the form of an alpha
+channel, a palette with an alpha channel, or a "transparency" key in the
+:py:attr:`~PIL.Image.Image.info` dictionary.
+
+Even if this attribute is true, the image might still appear solid, if all of
+the values shown within are opaque.
+
+ImageOps.cover
+^^^^^^^^^^^^^^
+
+Returns a resized version of the image, so that the requested size is covered,
+while maintaining the original aspect ratio.
+
+See :ref:`relative-resize` for a comparison between this and similar ``ImageOps``
+methods.
+
+size and font_size arguments when using default font
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Pillow has had a "better than nothing" default font, which can only be drawn at
+one font size. Now, if FreeType support is available, a version of
+`Aileron Regular <https://dotcolon.net/font/aileron>`_ is loaded, which can be
+drawn at chosen font sizes.
+
+The following ``size`` and ``font_size`` arguments can now be used to specify a
+font size for this new builtin font::
+
+    ImageFont.load_default(size=24)
+    draw.text((0, 0), "test", font_size=24)
+    draw.textlength((0, 0), "test", font_size=24)
+    draw.textbbox((0, 0), "test", font_size=24)
+    draw.multiline_text((0, 0), "test", font_size=24)
+    draw.multiline_textbbox((0, 0), "test", font_size=24)
+
+Other Changes
+=============
+
+Python 3.12
+^^^^^^^^^^^
+
+Pillow 10.0.0 had wheels built against Python 3.12 beta, available as a preview to help
+others prepare for 3.12, and to ensure Pillow could be used immediately at the release
+of 3.12.0 final (2023-10-02, :pep:`693`).
+
+Pillow 10.1.0 now officially supports Python 3.12.
+
+Added support for DDS BC5U and 8-bit color indexed images
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Support has been added to read BC5U DDS files as RGB images, and
+PALETTEINDEXED8 DDS files as P mode images.
+
+Support reading signed 8-bit YCbCr TIFF images
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+TIFF images with unsigned integer data, 8 bits per sample and a photometric
+interpretation of YCbCr can now be read.
diff --git a/docs/releasenotes/10.2.0.rst b/docs/releasenotes/10.2.0.rst
new file mode 100644
index 000000000..1c6b78b08
--- /dev/null
+++ b/docs/releasenotes/10.2.0.rst
@@ -0,0 +1,161 @@
+10.2.0
+------
+
+Security
+========
+
+ImageFont.getmask: Applied ImageFont.MAX_STRING_LENGTH
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+To protect against potential DOS attacks when using arbitrary strings as text input,
+Pillow will now raise a :py:exc:`ValueError` if the number of characters passed into
+:py:meth:`PIL.ImageFont.ImageFont.getmask` is over a certain limit,
+:py:data:`PIL.ImageFont.MAX_STRING_LENGTH`.
+
+This threshold can be changed by setting :py:data:`PIL.ImageFont.MAX_STRING_LENGTH`. It
+can be disabled by setting ``ImageFont.MAX_STRING_LENGTH = None``.
+
+A decompression bomb check has also been added to
+:py:meth:`PIL.ImageFont.ImageFont.getmask`.
+
+ImageFont.getmask: Trim glyph size
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+To protect against potential DOS attacks when using PIL fonts,
+:py:class:`PIL.ImageFont.ImageFont` now trims the size of individual glyphs so that
+they do not extend beyond the bitmap image.
+
+:cve:`2023-50447`: ImageMath.eval: Restricted environment keys
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+If an attacker has control over the keys passed to the
+``environment`` argument of :py:meth:`!PIL.ImageMath.eval`, they may be able to execute
+arbitrary code. To prevent this, keys matching the names of builtins and keys
+containing double underscores will now raise a :py:exc:`ValueError`.
+
+Deprecations
+============
+
+ImageFile.raise_oserror
+^^^^^^^^^^^^^^^^^^^^^^^
+
+``ImageFile.raise_oserror()`` has been deprecated and will be removed in Pillow
+12.0.0 (2025-10-15). The function is undocumented and is only useful for translating
+error codes returned by a codec's ``decode()`` method, which ImageFile already does
+automatically.
+
+IptcImageFile helper functions
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The functions ``IptcImageFile.dump`` and ``IptcImageFile.i``, and the constant
+``IptcImageFile.PAD`` have been deprecated and will be removed in Pillow
+12.0.0 (2025-10-15). These are undocumented helper functions intended
+for internal use, so there is no replacement. They can each be replaced
+by a single line of code using builtin functions in Python.
+
+API Changes
+===========
+
+Zero or negative font size error
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+When creating a :py:class:`~PIL.ImageFont.FreeTypeFont` instance, either directly or
+through :py:func:`~PIL.ImageFont.truetype`, if the font size is zero or less, a
+:py:exc:`ValueError` will now be raised.
+
+API Additions
+=============
+
+Added DdsImagePlugin enums
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+:py:class:`~PIL.DdsImagePlugin.DDSD`, :py:class:`~PIL.DdsImagePlugin.DDSCAPS`,
+:py:class:`~PIL.DdsImagePlugin.DDSCAPS2`, :py:class:`~PIL.DdsImagePlugin.DDPF`,
+:py:class:`~PIL.DdsImagePlugin.DXGI_FORMAT` and :py:class:`~PIL.DdsImagePlugin.D3DFMT`
+enums have been added to :py:class:`PIL.DdsImagePlugin`.
+
+JPEG RGB color space
+^^^^^^^^^^^^^^^^^^^^
+
+When saving JPEG files, ``keep_rgb`` can now be set to ``True``. This will store RGB
+images in the RGB color space instead of being converted to YCbCr automatically by
+libjpeg. When this option is enabled, attempting to chroma-subsample RGB images with
+the ``subsampling`` option will raise an :py:exc:`OSError`.
+
+JPEG restart marker interval
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+When saving JPEG files, ``restart_marker_blocks`` and ``restart_marker_rows`` can now
+be used to emit restart markers whenever the specified number of MCU blocks or rows
+have been produced.
+
+JPEG tables-only streamtype
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+When saving JPEG files, ``streamtype`` can now be set to 1, for tables-only. This will
+output only the quantization and Huffman tables for the image.
+
+Other Changes
+=============
+
+Added DDS BC4U and DX10 BC1 and BC4 reading
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Support has been added to read the BC4U format of DDS images.
+
+Support has also been added to read DX10 BC1 and BC4, whether UNORM or
+TYPELESS.
+
+Support arbitrary masks for uncompressed RGB DDS images
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+All masks are now supported when reading DDS images with uncompressed RGB data,
+allowing for bit counts other than 24 and 32.
+
+Saving TIFF tag RowsPerStrip
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+When saving TIFF images, the TIFF tag RowsPerStrip can now be one of the tags set by
+the user, rather than always being calculated by Pillow.
+
+Optimized ImageColor.getrgb and getcolor
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The color calculations of :py:attr:`~PIL.ImageColor.getrgb` and
+:py:attr:`~PIL.ImageColor.getcolor` are now cached using
+:py:func:`functools.lru_cache`. Cached calls of ``getrgb`` are 3.1 - 91.4 times
+as fast and ``getcolor`` are 5.1 - 19.6 times as fast.
+
+Optimized ImageMode.getmode
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The lookups made by :py:attr:`~PIL.ImageMode.getmode` are now cached using
+:py:func:`functools.lru_cache` instead of a custom cache. Cached calls are 1.2 times as
+fast.
+
+Optimized ImageStat.Stat count and extrema
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Calculating the :py:attr:`~PIL.ImageStat.Stat.count` and
+:py:attr:`~PIL.ImageStat.Stat.extrema` statistics is now faster. After the
+histogram is created in ``st = ImageStat.Stat(im)``, ``st.count`` is 3 times as fast on
+average and ``st.extrema`` is 12 times as fast on average.
+
+Encoder errors now report error detail as string
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+:py:exc:`OSError` exceptions from image encoders now include a textual description of
+the error instead of a numeric error code.
+
+Type hints
+^^^^^^^^^^
+
+Work has begun to add type annotations to Pillow, including:
+
+* :py:mod:`~PIL.ContainerIO`
+* :py:mod:`~PIL.FontFile`, :py:mod:`~PIL.BdfFontFile` and :py:mod:`~PIL.PcfFontFile`
+* :py:mod:`~PIL.ImageChops`
+* :py:mod:`~PIL.ImageMode`
+* :py:mod:`~PIL.ImageSequence`
+* :py:mod:`~PIL.ImageTransform`
+* :py:mod:`~PIL.TarIO`
diff --git a/docs/releasenotes/10.3.0.rst b/docs/releasenotes/10.3.0.rst
new file mode 100644
index 000000000..2f0437d94
--- /dev/null
+++ b/docs/releasenotes/10.3.0.rst
@@ -0,0 +1,119 @@
+10.3.0
+------
+
+Security
+========
+
+ImageMath eval()
+^^^^^^^^^^^^^^^^
+
+.. danger::
+  ``ImageMath.eval()`` uses Python's ``eval()`` function to process the expression
+  string, and carries the security risks of doing so. A direct replacement for this is
+  the new :py:meth:`~PIL.ImageMath.unsafe_eval`, but that carries the same risks. It is
+  not recommended to process expressions without considering this.
+  :py:meth:`~PIL.ImageMath.lambda_eval` is a more secure alternative.
+
+:cve:`2024-28219`: Fix buffer overflow in ``_imagingcms.c``
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+In ``_imagingcms.c``, two ``strcpy`` calls were able to copy too much data into fixed
+length strings. This has been fixed by using ``strncpy`` instead.
+
+Deprecations
+============
+
+ImageCms constants and versions() function
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+A number of constants and a function in :py:mod:`.ImageCms` have been deprecated.
+This includes a table of flags based on LittleCMS version 1 which has been replaced
+with a new class :py:class:`.ImageCms.Flags` based on LittleCMS 2 flags.
+
+============================================  ====================================================
+Deprecated                                    Use instead
+============================================  ====================================================
+``ImageCms.DESCRIPTION``                      No replacement
+``ImageCms.VERSION``                          ``PIL.__version__``
+``ImageCms.FLAGS["MATRIXINPUT"]``             :py:attr:`.ImageCms.Flags.CLUT_POST_LINEARIZATION`
+``ImageCms.FLAGS["MATRIXOUTPUT"]``            :py:attr:`.ImageCms.Flags.FORCE_CLUT`
+``ImageCms.FLAGS["MATRIXONLY"]``              No replacement
+``ImageCms.FLAGS["NOWHITEONWHITEFIXUP"]``     :py:attr:`.ImageCms.Flags.NOWHITEONWHITEFIXUP`
+``ImageCms.FLAGS["NOPRELINEARIZATION"]``      :py:attr:`.ImageCms.Flags.CLUT_PRE_LINEARIZATION`
+``ImageCms.FLAGS["GUESSDEVICECLASS"]``        :py:attr:`.ImageCms.Flags.GUESSDEVICECLASS`
+``ImageCms.FLAGS["NOTCACHE"]``                :py:attr:`.ImageCms.Flags.NOCACHE`
+``ImageCms.FLAGS["NOTPRECALC"]``              :py:attr:`.ImageCms.Flags.NOOPTIMIZE`
+``ImageCms.FLAGS["NULLTRANSFORM"]``           :py:attr:`.ImageCms.Flags.NULLTRANSFORM`
+``ImageCms.FLAGS["HIGHRESPRECALC"]``          :py:attr:`.ImageCms.Flags.HIGHRESPRECALC`
+``ImageCms.FLAGS["LOWRESPRECALC"]``           :py:attr:`.ImageCms.Flags.LOWRESPRECALC`
+``ImageCms.FLAGS["GAMUTCHECK"]``              :py:attr:`.ImageCms.Flags.GAMUTCHECK`
+``ImageCms.FLAGS["WHITEBLACKCOMPENSATION"]``  :py:attr:`.ImageCms.Flags.BLACKPOINTCOMPENSATION`
+``ImageCms.FLAGS["BLACKPOINTCOMPENSATION"]``  :py:attr:`.ImageCms.Flags.BLACKPOINTCOMPENSATION`
+``ImageCms.FLAGS["SOFTPROOFING"]``            :py:attr:`.ImageCms.Flags.SOFTPROOFING`
+``ImageCms.FLAGS["PRESERVEBLACK"]``           :py:attr:`.ImageCms.Flags.NONEGATIVES`
+``ImageCms.FLAGS["NODEFAULTRESOURCEDEF"]``    :py:attr:`.ImageCms.Flags.NODEFAULTRESOURCEDEF`
+``ImageCms.FLAGS["GRIDPOINTS"]``              :py:attr:`.ImageCms.Flags.GRIDPOINTS()`
+``ImageCms.versions()``                       :py:func:`PIL.features.version_module` with
+                                              ``feature="littlecms2"``, :py:data:`sys.version` or
+                                              :py:data:`sys.version_info`, and ``PIL.__version__``
+============================================  ====================================================
+
+ImageMath.eval()
+^^^^^^^^^^^^^^^^
+
+``ImageMath.eval()`` has been deprecated. Use :py:meth:`~PIL.ImageMath.lambda_eval` or
+:py:meth:`~PIL.ImageMath.unsafe_eval` instead. See earlier security notes for more
+information.
+
+API Changes
+===========
+
+Added alpha_quality argument when saving WebP images
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+When saving WebP images, an ``alpha_quality`` argument can be passed to the encoder. It
+is an integer value between 0 to 100, where values other than 100 will provide lossy
+compression.
+
+Negative kmeans error
+^^^^^^^^^^^^^^^^^^^^^
+
+When calling :py:meth:`~PIL.Image.Image.quantize`, a negative ``kmeans`` will now
+raise a :py:exc:`ValueError`, unless a palette is supplied to make the value redundant.
+
+Negative P1-P3 PPM value error
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+If a P1-P3 PPM image contains a negative value, a :py:exc:`ValueError` will now be
+raised.
+
+API Additions
+=============
+
+Added PerspectiveTransform
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+:py:class:`~PIL.ImageTransform.PerspectiveTransform` has been added, meaning
+that all of the :py:data:`~PIL.Image.Transform` values now have a corresponding
+subclass of :py:class:`~PIL.ImageTransform.Transform`.
+
+Other Changes
+=============
+
+Portable FloatMap (PFM) images
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Support has been added for reading and writing grayscale (Pf format)
+Portable FloatMap (PFM) files containing ``F`` data.
+
+Release GIL when fetching WebP frames
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Python's Global Interpreter Lock is now released when fetching WebP frames from
+the libwebp decoder.
+
+Type hints
+^^^^^^^^^^
+
+Pillow now has type hints for a large part of its modules, and the package
+includes a ``py.typed`` file and the ``Typing :: Typed`` Trove classifier.
diff --git a/docs/releasenotes/10.4.0.rst b/docs/releasenotes/10.4.0.rst
new file mode 100644
index 000000000..8d3706be6
--- /dev/null
+++ b/docs/releasenotes/10.4.0.rst
@@ -0,0 +1,62 @@
+10.4.0
+------
+
+Security
+========
+
+ImageShow.WindowsViewer.show_file
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+If an attacker has control over the ``path`` passed to
+``ImageShow.WindowsViewer.show_file()``, they may be able to
+execute arbitrary shell commands.
+
+To prevent this, a :py:exc:`FileNotFoundError` will be raised if the ``path``
+does not exist as a file. To provide a consistent experience, the error has
+been added to all :py:class:`~PIL.ImageShow` viewers.
+
+Deprecations
+============
+
+BGR;15, BGR 16 and BGR;24
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The experimental BGR;15, BGR;16 and BGR;24 modes have been deprecated.
+
+Non-image modes in ImageCms
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The use in :py:mod:`.ImageCms` of input modes and output modes that are not Pillow
+image modes has been deprecated. Defaulting to "L" or "1" if the mode cannot be mapped
+is also deprecated.
+
+Support for LibTIFF earlier than 4
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Support for LibTIFF earlier than version 4 has been deprecated.
+Upgrade to a newer version of LibTIFF instead.
+
+ImageDraw.getdraw hints parameter
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The ``hints`` parameter in :py:meth:`~PIL.ImageDraw.getdraw()` has been deprecated.
+
+API Additions
+=============
+
+ImageDraw.circle
+^^^^^^^^^^^^^^^^
+
+Added :py:meth:`~PIL.ImageDraw.ImageDraw.circle`. It provides the same functionality as
+:py:meth:`~PIL.ImageDraw.ImageDraw.ellipse`, but instead of taking a bounding box, it
+takes a center point and radius.
+
+Other Changes
+=============
+
+Python 3.13 beta
+^^^^^^^^^^^^^^^^
+
+To help others prepare for Python 3.13, wheels have been built against the 3.13 beta as
+a preview. This is not official support for Python 3.13, but simply an opportunity for
+users to test how Pillow works with the beta and report any problems.
diff --git a/docs/releasenotes/11.0.0.rst b/docs/releasenotes/11.0.0.rst
new file mode 100644
index 000000000..c3f18140f
--- /dev/null
+++ b/docs/releasenotes/11.0.0.rst
@@ -0,0 +1,162 @@
+11.0.0
+------
+
+Backwards Incompatible Changes
+==============================
+
+Python 3.8
+^^^^^^^^^^
+
+Pillow has dropped support for Python 3.8,
+which reached end-of-life in October 2024.
+
+Python 3.12 on macOS <= 10.12
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The latest version of Python 3.12 only supports macOS versions 10.13 and later,
+and so Pillow has also updated the deployment target for its prebuilt Python 3.12
+wheels.
+
+PSFile
+^^^^^^
+
+The :py:class:`!PSFile` class was removed in Pillow 11 (2024-10-15).
+This class was only made as a helper to be used internally,
+so there is no replacement. If you need this functionality though,
+it is a very short class that can easily be recreated in your own code.
+
+PyAccess and Image.USE_CFFI_ACCESS
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Since Pillow's C API is now faster than PyAccess on PyPy, ``PyAccess`` has been
+removed. Pillow's C API will now be used on PyPy instead.
+
+``Image.USE_CFFI_ACCESS``, for switching from the C API to PyAccess, was
+similarly removed.
+
+TiffImagePlugin IFD_LEGACY_API
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+An unused setting, ``TiffImagePlugin.IFD_LEGACY_API``, has been removed.
+
+WebP 0.4
+^^^^^^^^
+
+Support for WebP 0.4 and earlier has been removed; WebP 0.5 is the minimum supported.
+
+Deprecations
+============
+
+FreeType 2.9.0
+^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+
+Support for FreeType 2.9.0 is deprecated and will be removed in Pillow 12.0.0
+(2025-10-15), when FreeType 2.9.1 will be the minimum supported.
+
+We recommend upgrading to at least FreeType `2.10.4`_, which fixed a severe
+vulnerability introduced in FreeType 2.6 (:cve:`2020-15999`).
+
+.. _2.10.4: https://sourceforge.net/projects/freetype/files/freetype2/2.10.4/
+
+Get internal pointers to objects
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+
+``Image.core.ImagingCore.id`` and ``Image.core.ImagingCore.unsafe_ptrs`` have been
+deprecated and will be removed in Pillow 12 (2025-10-15). They were used for obtaining
+raw pointers to ``ImagingCore`` internals. To interact with C code, you can use
+``Image.Image.getim()``, which returns a ``Capsule`` object.
+
+ICNS (width, height, scale) sizes
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+
+Setting an ICNS image size to ``(width, height, scale)`` before loading has been
+deprecated. Instead, ``load(scale)`` can be used.
+
+Image isImageType()
+^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+
+``Image.isImageType(im)`` has been deprecated. Use ``isinstance(im, Image.Image)``
+instead.
+
+ImageMath.lambda_eval and ImageMath.unsafe_eval options parameter
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+
+The ``options`` parameter in :py:meth:`~PIL.ImageMath.lambda_eval()` and
+:py:meth:`~PIL.ImageMath.unsafe_eval()` has been deprecated. One or more
+keyword arguments can be used instead.
+
+JpegImageFile.huffman_ac and JpegImageFile.huffman_dc
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+
+The ``huffman_ac`` and ``huffman_dc`` dictionaries on JPEG images were unused. They
+have been deprecated, and will be removed in Pillow 12 (2025-10-15).
+
+Specific WebP Feature Checks
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+
+``features.check("transp_webp")``, ``features.check("webp_mux")`` and
+``features.check("webp_anim")`` are now deprecated. They will always return
+``True`` if the WebP module is installed, until they are removed in Pillow
+12.0.0 (2025-10-15).
+
+API Changes
+===========
+
+Default resampling filter for I;16* image modes
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The default resampling filter for I;16, I;16L, I;16B and I;16N has been changed from
+``Image.NEAREST`` to ``Image.BICUBIC``, to match the majority of modes.
+
+API Additions
+=============
+
+Writing XMP bytes to JPEG and MPO
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+XMP data can now be saved to JPEG files using an ``xmp`` argument::
+
+    im.save("out.jpg", xmp=b"test")
+
+The data can also be set  through :py:attr:`~PIL.Image.Image.info`, for use when saving
+either JPEG or MPO images::
+
+    im.info["xmp"] = b"test"
+    im.save("out.jpg")
+
+Other Changes
+=============
+
+Python 3.13
+^^^^^^^^^^^
+
+Pillow 10.4.0 had wheels built against Python 3.13 beta, available as a preview to help
+others prepare for 3.13, and to ensure Pillow could be used immediately at the release
+of 3.13.0 final (2024-10-07, :pep:`719`).
+
+Pillow 11.0.0 now officially supports Python 3.13.
+
+Support has also been added for the experimental free-threaded mode of :pep:`703`.
+
+Python 3.13 only supports macOS versions 10.13 and later.
+
+C-level Flags
+^^^^^^^^^^^^^
+
+Some compiling flags like ``WITH_THREADING``, ``WITH_IMAGECHOPS``, and other
+``WITH_*`` were removed. These flags were not available through the build system,
+but they could be edited in the C source.
diff --git a/docs/releasenotes/2.3.1.rst b/docs/releasenotes/2.3.1.rst
new file mode 100644
index 000000000..e54065a0b
--- /dev/null
+++ b/docs/releasenotes/2.3.1.rst
@@ -0,0 +1,26 @@
+2.3.1
+-----
+
+Security
+========
+
+These issues were reported in
+`Debian bug #737059 <https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=737059>`_.
+
+:cve:`2014-1932`: Fix insecure use of :py:func:`tempfile.mktemp`
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The (1) ``load_djpeg`` function in ``JpegImagePlugin.py``, (2) Ghostscript function
+in ``EpsImagePlugin.py``, (3) ``load`` function in ``IptcImagePlugin.py``, and (4)
+``_copy`` function in ``Image.py`` in
+Pillow before 2.3.1 do not properly create temporary files, which allow
+local users to overwrite arbitrary files and obtain sensitive information via a
+symlink attack on the temporary file.
+
+:cve:`2014-1933`: Fix insecure use of :py:func:`tempfile.mktemp`
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The (1) ``JpegImagePlugin.py`` and (2) ``EpsImagePlugin.py`` scripts in
+Pillow before 2.3.1 uses the names of
+temporary files on the command line, which makes it easier for local users to
+conduct symlink attacks by listing the processes.
diff --git a/docs/releasenotes/2.3.2.rst b/docs/releasenotes/2.3.2.rst
new file mode 100644
index 000000000..c4504ee33
--- /dev/null
+++ b/docs/releasenotes/2.3.2.rst
@@ -0,0 +1,14 @@
+2.3.2
+-----
+
+Security
+========
+
+:cve:`2014-3589`: Fix DOS attack
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+``PIL/IcnsImagePlugin.py`` in Pillow before 2.3.2 and
+2.5.x before 2.5.2 allows remote attackers to cause a denial of service via a crafted
+block size.
+
+Found and reported by Andrew Drake of `Dropbox <https://www.dropbox.com/>`__.
diff --git a/docs/releasenotes/2.5.2.rst b/docs/releasenotes/2.5.2.rst
new file mode 100644
index 000000000..a80b460a8
--- /dev/null
+++ b/docs/releasenotes/2.5.2.rst
@@ -0,0 +1,14 @@
+2.5.2
+-----
+
+Security
+========
+
+:cve:`2014-3589`: Fix DOS attack
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+``PIL/IcnsImagePlugin.py`` in Pillow before 2.3.2 and
+2.5.x before 2.5.2 allows remote attackers to cause a denial of service via a crafted
+block size.
+
+Found and reported by Andrew Drake of `Dropbox <https://www.dropbox.com/>`__.
diff --git a/docs/releasenotes/2.6.0.rst b/docs/releasenotes/2.6.0.rst
new file mode 100644
index 000000000..84b0016d2
--- /dev/null
+++ b/docs/releasenotes/2.6.0.rst
@@ -0,0 +1,14 @@
+2.6.0
+-----
+
+Security
+========
+
+:cve:`2014-3589`: Fix DOS attack
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+``PIL/IcnsImagePlugin.py`` in Pillow before 2.3.2 and
+2.5.x before 2.5.2 allows remote attackers to cause a denial of service via a crafted
+block size.
+
+Found and reported by Andrew Drake of `Dropbox <https://www.dropbox.com/>`__.
diff --git a/docs/releasenotes/2.7.0.rst b/docs/releasenotes/2.7.0.rst
index 0b3eeeb49..e9b0995bb 100644
--- a/docs/releasenotes/2.7.0.rst
+++ b/docs/releasenotes/2.7.0.rst
@@ -1,15 +1,14 @@
 2.7.0
-=====
+-----
 
 Sane Plugin
------------
+^^^^^^^^^^^
 
 The Sane plugin has now been split into its own repo:
 https://github.com/python-pillow/Sane .
 
-
 Png text chunk size limits
---------------------------
+^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 To prevent potential denial of service attacks using compressed text
 chunks, there are now limits to the decompressed size of text chunks
@@ -24,7 +23,7 @@ default. The total decompressed size of all text chunks is limited to
 know that there are large text blocks that are desired.
 
 Image resizing filters
-----------------------
+^^^^^^^^^^^^^^^^^^^^^^
 
 Image resizing methods :py:meth:`~PIL.Image.Image.resize` and
 :py:meth:`~PIL.Image.Image.thumbnail` take a ``resample`` argument, which tells
@@ -33,7 +32,7 @@ which filter should be used for resampling. Possible values are:
 were changed in this version.
 
 Bicubic and bilinear downscaling
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+++++++++++++++++++++++++++++++++
 
 From the beginning ``BILINEAR`` and ``BICUBIC`` filters were based on affine
 transformations and used a fixed number of pixels from the source image for
@@ -50,7 +49,7 @@ If you have previously used any tricks to maintain quality when downscaling with
 steps), they are unnecessary now.
 
 Antialias renamed to Lanczos
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+++++++++++++++++++++++++++++
 
 A new ``LANCZOS`` constant was added instead of ``ANTIALIAS``.
 
@@ -64,19 +63,19 @@ The ``ANTIALIAS`` constant is left for backward compatibility and is an alias
 for ``LANCZOS``.
 
 Lanczos upscaling quality
-^^^^^^^^^^^^^^^^^^^^^^^^^
++++++++++++++++++++++++++
 
 The image upscaling quality with ``LANCZOS`` filter was almost the same as
 ``BILINEAR`` due to a bug. This has been fixed.
 
 Bicubic upscaling quality
-^^^^^^^^^^^^^^^^^^^^^^^^^
++++++++++++++++++++++++++
 
 The ``BICUBIC`` filter for affine transformations produced sharp, slightly
 pixelated image for upscaling. Bicubic for convolutions is more soft.
 
 Resize performance
-^^^^^^^^^^^^^^^^^^
+++++++++++++++++++
 
 In most cases, convolution is more a expensive algorithm for downscaling
 because it takes into account all the pixels of source image. Therefore
@@ -93,7 +92,7 @@ The upscaling performance of the ``LANCZOS`` filter has remained the same. For
 times.
 
 Default filter for thumbnails
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
++++++++++++++++++++++++++++++
 
 In Pillow 2.5 the default filter for :py:meth:`~PIL.Image.Image.thumbnail` was
 changed from ``NEAREST`` to ``ANTIALIAS``. Antialias was chosen because all the
@@ -103,7 +102,7 @@ other filters gave poor quality for reduction. Starting from Pillow 2.7.0,
 uses supersampling internally, not convolutions.
 
 Image transposition
--------------------
++++++++++++++++++++
 
 A new method ``TRANSPOSE`` has been added for the
 :py:meth:`~PIL.Image.Image.transpose` operation in addition to
@@ -115,7 +114,7 @@ The speed of ``ROTATE_90``, ``ROTATE_270`` and ``TRANSPOSE`` has been significan
 improved for large images which don't fit in the processor cache.
 
 Gaussian blur and unsharp mask
-------------------------------
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The :py:meth:`~PIL.ImageFilter.GaussianBlur` implementation has been replaced
 with a sequential application of box filters. The new implementation is based on
@@ -125,7 +124,7 @@ implementations use Gaussian blur internally, all changes from this chapter
 are also applicable to it.
 
 Blur radius
-^^^^^^^^^^^
++++++++++++
 
 There was an error in the previous version of Pillow, where blur radius (the
 standard deviation of Gaussian) actually meant blur diameter. For example, to
@@ -136,7 +135,7 @@ If you used a Gaussian blur with some radius value, you need to divide this
 value by two.
 
 Blur performance
-^^^^^^^^^^^^^^^^
+++++++++++++++++
 
 Box filter computation time is constant relative to the radius and depends
 on source image size only. Because the new Gaussian blur implementation
@@ -148,7 +147,7 @@ second for radius 1, 3.6 seconds for radius 10 and 17 seconds for 50, now blur
 with any radius on same image is executed for 0.2 seconds.
 
 Blur quality
-^^^^^^^^^^^^
+++++++++++++
 
 The previous implementation takes into account only source pixels within
 2 * standard deviation radius for every destination pixel. This was not enough,
@@ -157,7 +156,7 @@ so the quality was worse compared to other Gaussian blur software.
 The new implementation does not have this drawback.
 
 TIFF Parameter Changes
-----------------------
+^^^^^^^^^^^^^^^^^^^^^^
 
 Several kwarg parameters for saving TIFF images were previously
 specified as strings with included spaces (e.g. 'x resolution'). This
diff --git a/docs/releasenotes/2.8.0.rst b/docs/releasenotes/2.8.0.rst
index c522fe8b0..2b9eed524 100644
--- a/docs/releasenotes/2.8.0.rst
+++ b/docs/releasenotes/2.8.0.rst
@@ -1,8 +1,8 @@
 2.8.0
-=====
+-----
 
 Open HTTP response objects with Image.open
-------------------------------------------
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 HTTP response objects returned from ``urllib2.urlopen(url)`` or
 ``requests.get(url, stream=True).raw`` are 'file-like' but do not support ``.seek()``
@@ -10,7 +10,7 @@ operations. As a result PIL was unable to open them as images, requiring a wrap
 ``cStringIO`` or ``BytesIO``.
 
 Now new functionality has been added to ``Image.open()`` by way of an ``.seek(0)`` check and
-catch on exception ``AttributeError`` or ``io.UnsupportedOperation``. If this is caught we
+catch on exception :py:exc:`AttributeError` or :py:exc:`io.UnsupportedOperation`. If this is caught we
 attempt to wrap the object using ``io.BytesIO`` (which will only work on buffer-file-like
 objects).
 
diff --git a/docs/releasenotes/3.0.0.rst b/docs/releasenotes/3.0.0.rst
index 67569d337..8bc477f70 100644
--- a/docs/releasenotes/3.0.0.rst
+++ b/docs/releasenotes/3.0.0.rst
@@ -1,9 +1,28 @@
-
 3.0.0
-=====
+-----
+
+Backwards Incompatible Changes
+==============================
+
+Several methods that have been marked as deprecated for many releases
+have been removed in this release:
+
+* ``Image.tostring()``
+* ``Image.fromstring()``
+* ``Image.offset()``
+* ``ImageDraw.setink()``
+* ``ImageDraw.setfill()``
+* The ``ImageFileIO`` module
+* The ``ImageFont.FreeTypeFont`` and ``ImageFont.truetype`` ``file`` keyword arg
+* The ``ImagePalette`` private ``_make`` functions
+* ``ImageWin.fromstring()``
+* ``ImageWin.tostring()``
+
+Other Changes
+=============
 
 Saving Multipage Images
------------------------
+^^^^^^^^^^^^^^^^^^^^^^^
 
 There is now support for saving multipage images in the ``GIF`` and
 ``PDF`` formats. To enable this functionality, pass in ``save_all=True``
@@ -12,7 +31,7 @@ as a keyword argument to the save::
     im.save('test.pdf', save_all=True)
 
 Tiff ImageFileDirectory Rewrite
--------------------------------
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The Tiff ImageFileDirectory metadata code has been rewritten. Where
 previously it returned a somewhat arbitrary set of values and tuples,
@@ -25,28 +44,10 @@ structures will be deprecated at some point in the future.  When
 saving Tiff metadata, new code should use the
 TiffImagePlugin.ImageFileDirectory_v2 class.
 
-Deprecated Methods
-------------------
-
-Several methods that have been marked as deprecated for many releases
-have been removed in this release::
-
-    Image.tostring()
-    Image.fromstring()
-    Image.offset()
-    ImageDraw.setink()
-    ImageDraw.setfill()
-    The ImageFileIO module
-    The ImageFont.FreeTypeFont and ImageFont.truetype ``file`` keyword arg
-    The ImagePalette private _make functions
-    ImageWin.fromstring()
-    ImageWin.tostring()
-
-LibJpeg and Zlib are Required by Default
-----------------------------------------
+LibJpeg and Zlib are required by default
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The external dependencies on libjpeg and zlib are now required by default.
 If the headers or libraries are not found, then installation will abort
 with an error. This behaviour can be disabled with the ``--disable-libjpeg``
 and ``--disable-zlib`` flags.
-
diff --git a/docs/releasenotes/3.1.0.rst b/docs/releasenotes/3.1.0.rst
index 3cdb6939d..951819f19 100644
--- a/docs/releasenotes/3.1.0.rst
+++ b/docs/releasenotes/3.1.0.rst
@@ -1,9 +1,8 @@
-
 3.1.0
-=====
+-----
 
 ImageDraw arc, chord and pieslice can now use floats
-----------------------------------------------------
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 There is no longer a need to ensure that the start and end arguments for ``arc``,
 ``chord`` and ``pieslice`` are integers.
@@ -12,7 +11,7 @@ Note that these numbers are not simply rounded internally, but are actually
 utilised in the drawing process.
 
 Consistent multiline text spacing
----------------------------------
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 When using the ``ImageDraw`` multiline methods, the spacing between
 lines was inconsistent, based on the combination on ascenders and
@@ -24,7 +23,7 @@ not the absolute height of each line.
 There is also now a default spacing of 4px between lines.
 
 Exif, Jpeg and Tiff Metadata
-----------------------------
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 There were major changes in the TIFF ImageFileDirectory support in
 Pillow 3.0 that led to a number of regressions. Some of them have been
diff --git a/docs/releasenotes/3.1.1.rst b/docs/releasenotes/3.1.1.rst
index 5d60e116c..4eabd1944 100644
--- a/docs/releasenotes/3.1.1.rst
+++ b/docs/releasenotes/3.1.1.rst
@@ -1,12 +1,14 @@
-
 3.1.1
-=====
+-----
 
-CVE-2016-0740 -- Buffer overflow in TiffDecode.c
-------------------------------------------------
+Security
+========
+
+:cve:`2016-0740`: Buffer overflow in ``TiffDecode.c``
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Pillow 3.1.0 and earlier when linked against libtiff >= 4.0.0 on x64
-may overflow a buffer when reading a specially crafted tiff file (:cve:`2016-0740`).
+may overflow a buffer when reading a specially crafted tiff file.
 
 Specifically, libtiff >= 4.0.0 changed the return type of
 ``TIFFScanlineSize`` from ``int32`` to machine dependent
@@ -19,9 +21,8 @@ image data over 64k is written over the heap, causing a segfault.
 
 This issue was found by security researcher FourOne.
 
-
-CVE-2016-0775 -- Buffer overflow in FliDecode.c
------------------------------------------------
+:cve:`2016-0775`: Buffer overflow in ``FliDecode.c``
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 In all versions of Pillow, dating back at least to the last PIL 1.1.7
 release, FliDecode.c has a buffer overflow error (:cve:`2016-0775`).
@@ -49,8 +50,8 @@ off the end of the memory buffer, causing a segfault.
 
 This issue was found by Alyssa Besseling at Atlassian.
 
-CVE-2016-2533 -- Buffer overflow in PcdDecode.c
------------------------------------------------
+:cve:`2016-2533`: Buffer overflow in ``PcdDecode.c``
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 In all versions of Pillow, dating back at least to the last PIL 1.1.7
 release, ``PcdDecode.c`` has a buffer overflow error (:cve:`2016-2533`).
@@ -61,8 +62,8 @@ assuming 4 bytes per pixel. This writes 768 bytes beyond the end of
 the buffer into other Python object storage. In some cases, this
 causes a segfault, in others an internal Python malloc error.
 
-Integer overflow in Resample.c
-------------------------------
+Integer overflow in ``Resample.c``
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 If a large value was passed into the new size for an image, it is
 possible to overflow an ``int32`` value passed into malloc.
diff --git a/docs/releasenotes/3.1.2.rst b/docs/releasenotes/3.1.2.rst
index 04325ad86..a96154977 100644
--- a/docs/releasenotes/3.1.2.rst
+++ b/docs/releasenotes/3.1.2.rst
@@ -1,13 +1,15 @@
-
 3.1.2
-=====
+-----
 
-CVE-2016-3076 -- Buffer overflow in Jpeg2KEncode.c
---------------------------------------------------
+Security
+========
 
-Pillow between 2.5.0 and 3.1.1 may overflow a buffer when writing
-large Jpeg2000 files, allowing for code execution or other memory
-corruption (:cve:`2016-3076`).
+:cve:`2016-3076`: Buffer overflow in Jpeg2KEncode.c
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Pillow between 2.5.0 and 3.1.1 may overflow a buffer
+when writing large Jpeg2000 files, allowing for code execution or other
+memory corruption.
 
 This occurs specifically in the function ``j2k_encode_entry``, at the line:
 
diff --git a/docs/releasenotes/3.2.0.rst b/docs/releasenotes/3.2.0.rst
index c61774288..3ed8fae57 100644
--- a/docs/releasenotes/3.2.0.rst
+++ b/docs/releasenotes/3.2.0.rst
@@ -1,9 +1,8 @@
-
 3.2.0
 -----
 
 New DDS and FTEX Image Plugins
-==============================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The ``DdsImagePlugin`` reading DXT1 and DXT5 encoded ``.dds`` images was
 added. DXT3 images are not currently supported.
@@ -14,13 +13,13 @@ per file, in the ``.ftc`` (compressed) and ``.ftu`` (uncompressed)
 formats.
 
 Updates to the GbrImagePlugin
-=============================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The ``GbrImagePlugin`` (GIMP brush format) has been updated to fix
 support for version 1 files and add support for version 2 files.
 
 Passthrough Parameters for ImageDraw.text
-=========================================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 ``ImageDraw.multiline_text`` and ``ImageDraw.multiline_size`` take extra
 spacing parameters above what are used in ``ImageDraw.text`` and
@@ -29,7 +28,7 @@ spacing parameters above what are used in ``ImageDraw.text`` and
 to the corresponding multiline functions.
 
 ImageSequence.Iterator changes
-==============================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 ``ImageSequence.Iterator`` is now an actual iterator implementing the
 Iterator protocol.  It is also now possible to seek to the first image
diff --git a/docs/releasenotes/3.3.0.rst b/docs/releasenotes/3.3.0.rst
index 39ffdbb2e..cd6f7e2f9 100644
--- a/docs/releasenotes/3.3.0.rst
+++ b/docs/releasenotes/3.3.0.rst
@@ -2,7 +2,7 @@
 -----
 
 Libimagequant support
-=====================
+^^^^^^^^^^^^^^^^^^^^^
 
 There is now support for using libimagequant as a higher quality
 quantization option in ``Image.quantize()`` on Unix-like
@@ -12,21 +12,20 @@ differences.
 
 
 New Setup.py options
-====================
+^^^^^^^^^^^^^^^^^^^^
 
 There are two new options to control the ``build_ext`` task in ``setup.py``:
 
-  * ``--debug`` dumps all of the directories and files that are
-    checked when searching for libraries or headers when building the
-    extensions.
-  * ``--disable-platform-guessing`` removes many of the directories
-    that are checked for libraries and headers for build systems or
-    cross compilers that specify that information in via environment
-    variables.
-
+* ``--debug`` dumps all of the directories and files that are
+  checked when searching for libraries or headers when building the
+  extensions.
+* ``--disable-platform-guessing`` removes many of the directories
+  that are checked for libraries and headers for build systems or
+  cross compilers that specify that information in via environment
+  variables.
 
 Resizing
-========
+^^^^^^^^
 
 Image resampling for 8-bit per channel images was rewritten using only integer
 computings. This is faster on most platforms and doesn't introduce precision
@@ -36,19 +35,17 @@ makes resampling 60% faster on average.
 Color calculation for images in the ``LA`` mode on semitransparent pixels
 was fixed.
 
-
 Rotation
-========
+^^^^^^^^
 
 Rotation for angles divisible by 90 degrees now always uses transposition.
 This greatly improves both quality and performance in this case.
 Also, the bug with wrong image size calculation when rotating by 90 degrees
 was fixed.
 
-
 Image Metadata
-==============
+^^^^^^^^^^^^^^
 
 The return type for binary data in version 2 Exif and Tiff metadata
 has been changed from a tuple of integers to bytes. This is a change
-from the behavior since ``3.0.0``.
+from the behavior since 3.0.0.
diff --git a/docs/releasenotes/3.3.2.rst b/docs/releasenotes/3.3.2.rst
index 68a09a3c8..73156a65d 100644
--- a/docs/releasenotes/3.3.2.rst
+++ b/docs/releasenotes/3.3.2.rst
@@ -1,9 +1,11 @@
-
 3.3.2
-=====
+-----
+
+Security
+========
 
 Integer overflow in Map.c
--------------------------
+^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Pillow prior to 3.3.2 may experience integer overflow errors in map.c
 when reading specially crafted image files. This may lead to memory
@@ -26,7 +28,7 @@ memory without duplicating the image first.
 This issue was found by Cris Neckar at Divergent Security.
 
 Sign Extension in Storage.c
----------------------------
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Pillow prior to 3.3.2 and PIL 1.1.7 (at least) do not check for
 negative image sizes in ``ImagingNew`` in ``Storage.c``. A negative
@@ -34,7 +36,3 @@ image size can lead to a smaller allocation than expected, leading to
 arbitrary writes.
 
 This issue was found by Cris Neckar at Divergent Security.
-
-
-
-
diff --git a/docs/releasenotes/3.4.0.rst b/docs/releasenotes/3.4.0.rst
index dc5e2e295..8a5a7efe3 100644
--- a/docs/releasenotes/3.4.0.rst
+++ b/docs/releasenotes/3.4.0.rst
@@ -1,9 +1,32 @@
-
 3.4.0
 -----
 
+Backwards Incompatible Changes
+==============================
+
+Image.core.open_ppm removed
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The nominally private/debugging function ``Image.core.open_ppm`` has
+been removed. If you were using this function, please use
+``Image.open`` instead.
+
+Deprecations
+============
+
+Deprecation Warning when Saving JPEGs
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+JPEG images cannot contain an alpha channel. Pillow prior to 3.4.0
+silently drops the alpha channel. With this release Pillow will now
+issue a :py:exc:`DeprecationWarning` when attempting to save a ``RGBA`` mode
+image as a JPEG. This will become an error in Pillow 4.2.
+
+API Additions
+=============
+
 New resizing filters
-====================
+^^^^^^^^^^^^^^^^^^^^
 
 Two new filters available for ``Image.resize()`` and ``Image.thumbnail()``
 functions: ``BOX`` and ``HAMMING``. ``BOX`` is the high-performance filter with
@@ -14,23 +37,15 @@ two times shorter window than ``BILINEAR``. It can be used for image reduction
 providing the image downscaling quality comparable to ``BICUBIC``.
 Both new filters don't show good quality for the image upscaling.
 
-Deprecation Warning when Saving JPEGs
-=====================================
-
-JPEG images cannot contain an alpha channel. Pillow prior to 3.4.0
-silently drops the alpha channel. With this release Pillow will now
-issue a ``DeprecationWarning`` when attempting to save a ``RGBA`` mode
-image as a JPEG. This will become an error in Pillow 4.2.
-
 New DDS Decoders
-================
+^^^^^^^^^^^^^^^^
 
 Pillow can now decode DXT3 images, as well as the previously supported
 DXT1 and DXT5 formats. All three formats are now decoded in C code for
 better performance.
 
 Append images to GIF
-====================
+^^^^^^^^^^^^^^^^^^^^
 
 Additional frames can now be appended when saving a GIF file, through the
 ``append_images`` argument. The new frames are passed in as a list of images,
@@ -42,16 +57,9 @@ in effect, e.g.::
     im.save(out, save_all=True, append_images=[im1, im2, ...])
 
 Save multiple frame TIFF
-========================
+^^^^^^^^^^^^^^^^^^^^^^^^
 
 Multiple frames can now be saved in a TIFF file by using the ``save_all`` option.
 e.g.::
 
     im.save("filename.tiff", format="TIFF", save_all=True)
-
-Image.core.open_ppm removed
-===========================
-
-The nominally private/debugging function ``Image.core.open_ppm`` has
-been removed. If you were using this function, please use
-``Image.open`` instead.
diff --git a/docs/releasenotes/4.0.0.rst b/docs/releasenotes/4.0.0.rst
index cbf131c93..625f237e8 100644
--- a/docs/releasenotes/4.0.0.rst
+++ b/docs/releasenotes/4.0.0.rst
@@ -2,7 +2,7 @@
 -----
 
 Python 2.6 and 3.2 Dropped
-==========================
+^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Pillow 4.0 no longer supports Python 2.6 and 3.2. We will not be
 creating binaries, testing, or retaining compatibility with these
@@ -10,33 +10,33 @@ releases. This release removes some workarounds for those Python
 releases, so the final working version of Pillow on 2.6 or 3.2 is 3.4.2.
 
 Support added for Python 3.6
-============================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Pillow 4.0 supports Python 3.6.
 
 OleFileIO.py
-============
+^^^^^^^^^^^^
 
-OleFileIO.py has been removed as a vendored file and is now installed
-from the upstream olefile pypi package. All internal dependencies are
+``OleFileIO.py`` has been removed as a vendored file and is now installed
+from the upstream :pypi:`olefile` PyPI package. All internal dependencies are
 redirected to the olefile package. Direct accesses to
 ``PIL.OlefileIO`` raises a deprecation warning, then patches the
 upstream olefile into ``sys.modules`` in its place.
 
 SGI image save
-==============
+^^^^^^^^^^^^^^
 
 It is now possible to save images in modes ``L``, ``RGB``, and
 ``RGBA`` to the uncompressed SGI image format.
 
 Zero sized images
-=================
+^^^^^^^^^^^^^^^^^
 
 Pillow 3.4.0 removed support for creating images with (0,0) size. This
 has been reenabled, restoring pre 3.4 behavior.
 
 Internal handles_eof flag
-=========================
+^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The ``handles_eof flag`` for decoding images has been removed, as there
 were no internal users of the flag. Anyone maintaining image decoders
@@ -44,7 +44,7 @@ outside of the Pillow source tree should consider using the cleanup
 function pointers instead.
 
 Image.core.stretch removed
-==========================
+^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The stretch function on the core image object has been removed. This
 used to be for enlarging the image, but has been aliased to resize
diff --git a/docs/releasenotes/4.1.0.rst b/docs/releasenotes/4.1.0.rst
index 4d6598d8e..80ad9b9fb 100644
--- a/docs/releasenotes/4.1.0.rst
+++ b/docs/releasenotes/4.1.0.rst
@@ -1,8 +1,8 @@
 4.1.0
 -----
 
-Removed Deprecated Items
-========================
+Deprecations
+============
 
 Several deprecated items have been removed.
 
@@ -15,8 +15,11 @@ Several deprecated items have been removed.
   ``PIL.ImageDraw.ImageDraw.setfont`` have been removed.
 
 
+Other Changes
+=============
+
 Closing Files When Opening Images
-=================================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The file handling when opening images has been overhauled. Previously,
 Pillow would attempt to close some, but not all image formats
@@ -38,9 +41,8 @@ is specified:
   the underlying file until we are done with the image. The mapping
   will be closed in the ``close`` or ``__del__`` method.
 
-
 Changes to GIF Handling When Saving
-===================================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The :py:class:`PIL.GifImagePlugin` code has been refactored to fix the flow when
 saving images. There are two external changes that arise from this:
@@ -56,14 +58,14 @@ This refactor fixed some bugs with palette handling when saving
 multiple frame GIFs.
 
 New Method: Image.remap_palette
-===============================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The method :py:meth:`PIL.Image.Image.remap_palette()` has been
 added. This method was hoisted from the GifImagePlugin code used to
 optimize the palette.
 
 Added Decoder Registry and Support for Python Based Decoders
-============================================================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 There is now a decoder registry similar to the image plugin
 registries. Image plugins can register a decoder, and it will be
@@ -73,7 +75,7 @@ their C based counterparts, they may be easier and quicker to develop
 or safer to run.
 
 Tests
-=====
+^^^^^
 
 Many tests have been added, including correctness tests for image
 formats that have been previously untested.
diff --git a/docs/releasenotes/4.1.1.rst b/docs/releasenotes/4.1.1.rst
index 7aa3c1fbf..8c8055bfa 100644
--- a/docs/releasenotes/4.1.1.rst
+++ b/docs/releasenotes/4.1.1.rst
@@ -2,7 +2,7 @@
 -----
 
 Fix Regression with reading DPI from EXIF data
-==============================================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Some JPEG images don't contain DPI information in the image metadata,
 but do contain it in the EXIF data. A patch was added in 4.1.0 to read
@@ -10,9 +10,8 @@ from the EXIF data, but it did not accept all possible types that
 could be included there.  This fix adds the ability to read ints as
 well as rational values.
 
-
 Incompatibility between 3.6.0 and 3.6.1
-=======================================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 CPython 3.6.1 added a new symbol, PySlice_GetIndicesEx, which was not
 present in 3.6.0. This had the effect of causing binaries compiled on
@@ -20,5 +19,3 @@ CPython 3.6.1 to not work on installations of C-Python 3.6.0. This fix
 undefines PySlice_GetIndicesEx if it exists to restore compatibility
 with both 3.6.0 and 3.6.1. See https://bugs.python.org/issue29943 for
 more details.
-
-
diff --git a/docs/releasenotes/4.2.0.rst b/docs/releasenotes/4.2.0.rst
index 1e9637f1e..bc2a45f02 100644
--- a/docs/releasenotes/4.2.0.rst
+++ b/docs/releasenotes/4.2.0.rst
@@ -1,37 +1,11 @@
 4.2.0
 -----
 
-Added Complex Text Rendering
-============================
+Backwards Incompatible Changes
+==============================
 
-Pillow now supports complex text rendering for scripts requiring glyph
-composition and bidirectional flow. This optional feature adds three
-dependencies: harfbuzz, fribidi, and raqm. See the :doc:`install documentation
-<../installation>` for further details. This feature is tested and works on
-Unix and Mac, but has not yet been built on Windows platforms.
-
-New Optional Parameters
-=======================
-
-* :py:meth:`PIL.ImageDraw.floodfill` has a new optional parameter:
-  threshold. This specifies a tolerance for the color to replace with
-  the flood fill.
-
-* The TIFF and PDF image writers now support the ``append_images``
-  optional parameter for specifying additional images to create
-  multipage outputs.
-
-New DecompressionBomb Warning
-=============================
-
-:py:meth:`PIL.Image.Image.crop` now may raise a DecompressionBomb
-warning if the crop region enlarges the image over the threshold
-specified by :py:data:`PIL.Image.MAX_IMAGE_PIXELS`.
-
-Removed Deprecated Items
-========================
-
-Several deprecated items have been removed.
+Several deprecated items have been removed
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 * The methods ``PIL.ImageWin.Dib.fromstring``,
   ``PIL.ImageWin.Dib.tostring`` and
@@ -44,8 +18,38 @@ Several deprecated items have been removed.
   an :py:exc:`IOError` is raised.
 
 Removed Core Image Function
-===========================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The unused function ``Image.core.new_array`` was removed. This is an
 internal function that should not have been used by user code, but it
 was accessible from the python layer.
+
+Other Changes
+=============
+
+Added Complex Text Rendering
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Pillow now supports complex text rendering for scripts requiring glyph
+composition and bidirectional flow. This optional feature adds three
+dependencies: harfbuzz, fribidi, and raqm. See the :doc:`install documentation
+<../installation>` for further details. This feature is tested and works on
+Unix and Mac, but has not yet been built on Windows platforms.
+
+New Optional Parameters
+^^^^^^^^^^^^^^^^^^^^^^^
+
+* :py:meth:`PIL.ImageDraw.floodfill` has a new optional parameter:
+  threshold. This specifies a tolerance for the color to replace with
+  the flood fill.
+
+* The TIFF and PDF image writers now support the ``append_images``
+  optional parameter for specifying additional images to create
+  multipage outputs.
+
+New DecompressionBomb Warning
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+:py:meth:`PIL.Image.Image.crop` now may raise a DecompressionBomb
+warning if the crop region enlarges the image over the threshold
+specified by :py:data:`PIL.Image.MAX_IMAGE_PIXELS`.
diff --git a/docs/releasenotes/4.2.1.rst b/docs/releasenotes/4.2.1.rst
index c9e953da4..2061f6467 100644
--- a/docs/releasenotes/4.2.1.rst
+++ b/docs/releasenotes/4.2.1.rst
@@ -4,8 +4,7 @@
 There are no functional changes in this release.
 
 Fixed Windows PyPy Build
-========================
+^^^^^^^^^^^^^^^^^^^^^^^^
 
 A change in the 4.2.0 cycle broke the Windows PyPy build. This has
 been fixed, and PyPy is now part of the Windows CI matrix.
-
diff --git a/docs/releasenotes/5.0.0.rst b/docs/releasenotes/5.0.0.rst
index 509edbe6d..be00a45cd 100644
--- a/docs/releasenotes/5.0.0.rst
+++ b/docs/releasenotes/5.0.0.rst
@@ -28,7 +28,7 @@ Scripts
 
 The scripts formerly installed by Pillow have been split into a
 separate package, pillow-scripts, living at
-https://github.com/python-pillow/pillow-scripts .
+https://github.com/python-pillow/pillow-scripts.
 
 
 API Changes
@@ -37,7 +37,7 @@ API Changes
 OleFileIO.py
 ^^^^^^^^^^^^
 
-The olefile module is no longer a required dependency when installing Pillow.
+The :pypi:`olefile` module is no longer a required dependency when installing Pillow.
 Support for plugins requiring olefile will not be loaded if it is not
 installed. This allows library consumers to avoid installing this dependency
 if they choose. Some library consumers have little interest in the format
diff --git a/docs/releasenotes/5.1.0.rst b/docs/releasenotes/5.1.0.rst
index 2a4c64ac5..4e3d10ac5 100644
--- a/docs/releasenotes/5.1.0.rst
+++ b/docs/releasenotes/5.1.0.rst
@@ -1,15 +1,6 @@
 5.1.0
 -----
 
-New File Format
-===============
-
-BLP File Format
-^^^^^^^^^^^^^^^
-
-Pillow now supports reading the BLP "Blizzard Mipmap" file format used
-for tiles in Blizzard's engine.
-
 API Changes
 ===========
 
@@ -21,12 +12,21 @@ and ``CMYK`` with up to 6 8-bit channels, discarding any extra
 channels if the content is tagged as UNSPECIFIED.  Pillow still does
 not store more than 4 8-bit channels of image data.
 
+API Additions
+=============
+
 Append to PDF Files
 ^^^^^^^^^^^^^^^^^^^
 
 Images can now be appended to PDF files in place by passing in
 ``append=True`` when saving the image.
 
+New BLP File Format
+^^^^^^^^^^^^^^^^^^^
+
+Pillow now supports reading the BLP "Blizzard Mipmap" file format used
+for tiles in Blizzard's engine.
+
 Other Changes
 =============
 
diff --git a/docs/releasenotes/5.3.0.rst b/docs/releasenotes/5.3.0.rst
index bff56566b..8f276da24 100644
--- a/docs/releasenotes/5.3.0.rst
+++ b/docs/releasenotes/5.3.0.rst
@@ -8,7 +8,7 @@ Image size
 ^^^^^^^^^^
 
 If you attempt to set the size of an image directly, e.g.
-``im.size = (100, 100)``, you will now receive an ``AttributeError``. This is
+``im.size = (100, 100)``, you will now receive an :py:exc:`AttributeError`. This is
 not about removing existing functionality, but instead about raising an
 explicit error to prevent later consequences. The ``resize`` method is the
 correct way to change an image's size.
@@ -16,7 +16,8 @@ correct way to change an image's size.
 The exceptions to this are:
 
 * The ICO and ICNS image formats, which use ``im.size = (100, 100)`` to select a subimage.
-* The TIFF image format, which now has a ``DeprecationWarning`` for this action, as direct image size setting was previously necessary to work around an issue with tile extents.
+* The TIFF image format, which now has a :py:exc:`DeprecationWarning` for this action,
+  as direct image size setting was previously necessary to work around an issue with tile extents.
 
 
 API Additions
diff --git a/docs/releasenotes/5.4.1.rst b/docs/releasenotes/5.4.1.rst
index 78f483db6..bbabd6520 100644
--- a/docs/releasenotes/5.4.1.rst
+++ b/docs/releasenotes/5.4.1.rst
@@ -15,7 +15,7 @@ PNG: Handle IDAT chunks after image end
 
 Some PNG images have multiple IDAT chunks. In some cases, Pillow will stop
 reading image data before the IDAT chunks finish. A regression caused an
-``EOFError`` exception when previously there was none. This is now fixed, and
+:py:exc:`EOFError` exception when previously there was none. This is now fixed, and
 file reading continues in case there are subsequent text chunks.
 
 PNG: MIME type
@@ -30,7 +30,7 @@ File closing
 ^^^^^^^^^^^^
 
 A regression caused an unsupported image file to report a
-``ValueError: seek of closed file`` exception instead of an ``OSError``. This
+``ValueError: seek of closed file`` exception instead of an :py:exc:`OSError`. This
 has been fixed by ensuring that image plugins only close their internal ``__fp``
 if they are not the same as ``ImageFile``'s ``fp``, allowing each to manage their own
 file pointers.
diff --git a/docs/releasenotes/6.0.0.rst b/docs/releasenotes/6.0.0.rst
index 3e3b945a0..5e69f0b6b 100644
--- a/docs/releasenotes/6.0.0.rst
+++ b/docs/releasenotes/6.0.0.rst
@@ -14,8 +14,8 @@ Pillow for Python 3.4 is 5.4.1.
 Removed deprecated PIL.OleFileIO
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-PIL.OleFileIO was removed as a vendored file and in Pillow 4.0.0 (2017-01) in favour of
-the upstream olefile Python package, and replaced with an ``ImportError``. The
+``PIL.OleFileIO`` was removed as a vendored file and in Pillow 4.0.0 (2017-01) in favour of
+the upstream :pypi:`olefile` Python package, and replaced with an :py:exc:`ImportError`. The
 deprecated file has now been removed from Pillow. If needed, install from PyPI (eg.
 ``python3 -m pip install olefile``).
 
@@ -103,7 +103,7 @@ ImageCms.CmsProfile attributes
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Some attributes in ``ImageCms.CmsProfile`` have been deprecated since Pillow 3.2.0. From
-6.0.0, they issue a ``DeprecationWarning``:
+6.0.0, they issue a :py:exc:`DeprecationWarning`:
 
 ========================  ===============================
 Deprecated                Use instead
diff --git a/docs/releasenotes/6.1.0.rst b/docs/releasenotes/6.1.0.rst
index 76e13b061..ce3edc5fa 100644
--- a/docs/releasenotes/6.1.0.rst
+++ b/docs/releasenotes/6.1.0.rst
@@ -29,10 +29,10 @@ API Additions
 Image.entropy
 ^^^^^^^^^^^^^
 Calculates and returns the entropy for the image. A bilevel image (mode "1") is treated
-as a greyscale ("L") image by this method.  If a mask is provided, the method employs
+as a grayscale ("L") image by this method.  If a mask is provided, the method employs
 the histogram for those parts of the image where the mask image is non-zero. The mask
 image must have the same size as the image, and be either a bi-level image (mode "1") or
-a greyscale image ("L").
+a grayscale image ("L").
 
 ImageGrab.grab
 ^^^^^^^^^^^^^^
@@ -58,7 +58,7 @@ file. ``ImageFont.FreeTypeFont`` has four new methods,
 :py:meth:`PIL.ImageFont.FreeTypeFont.set_variation_by_name` for using named styles, and
 :py:meth:`PIL.ImageFont.FreeTypeFont.get_variation_axes` and
 :py:meth:`PIL.ImageFont.FreeTypeFont.set_variation_by_axes` for using font axes
-instead. An ``IOError`` will be raised if the font is not a variation font. FreeType
+instead. An :py:exc:`IOError` will be raised if the font is not a variation font. FreeType
 2.9.1 or greater is required.
 
 Other Changes
diff --git a/docs/releasenotes/6.2.0.rst b/docs/releasenotes/6.2.0.rst
index 7daac1b19..b851c56fc 100644
--- a/docs/releasenotes/6.2.0.rst
+++ b/docs/releasenotes/6.2.0.rst
@@ -1,6 +1,53 @@
 6.2.0
 -----
 
+Security
+========
+
+This release catches several buffer overruns and fixes :cve:`2019-16865`.
+
+Buffer overruns
+^^^^^^^^^^^^^^^
+
+In ``RawDecode.c``, an error is now thrown if skip is calculated to be less than
+zero. It is intended to skip padding between lines, not to go backwards.
+
+In ``PsdImagePlugin``, if the combined sizes of the individual parts is larger than
+the declared size of the extra data field, then it looked for the next layer by
+seeking backwards. This is now corrected by seeking to (the start of the layer
++ the size of the extra data field) instead of (the read parts of the layer +
+the rest of the layer).
+
+Decompression bomb checks have been added to GIF and ICO formats.
+
+An error is now raised if a TIFF dimension is a string, rather than trying to
+perform operations on it.
+
+:cve:`2019-16865`: Fix DOS attack
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The CVE is regarding DOS problems, such as consuming large amounts of memory,
+or taking a large amount of time to process an image.
+
+API Changes
+===========
+
+Image.getexif
+^^^^^^^^^^^^^
+
+To allow for lazy loading of Exif data, ``Image.getexif()`` now returns a
+shared instance of ``Image.Exif``.
+
+Deprecations
+^^^^^^^^^^^^
+
+Image.frombuffer
+~~~~~~~~~~~~~~~~
+
+There has been a longstanding warning that the defaults of ``Image.frombuffer``
+may change in the future for the "raw" decoder. The change will now take place
+in Pillow 7.0.
+
 API Additions
 =============
 
@@ -46,46 +93,6 @@ ImageGrab on multi-monitor Windows
 An ``all_screens`` argument has been added to ``ImageGrab.grab``. If ``True``,
 all monitors will be included in the created image.
 
-API Changes
-===========
-
-Image.getexif
-^^^^^^^^^^^^^
-
-To allow for lazy loading of Exif data, ``Image.getexif()`` now returns a
-shared instance of ``Image.Exif``.
-
-Deprecations
-^^^^^^^^^^^^
-
-Image.frombuffer
-~~~~~~~~~~~~~~~~
-
-There has been a longstanding warning that the defaults of ``Image.frombuffer``
-may change in the future for the "raw" decoder. The change will now take place
-in Pillow 7.0.
-
-Security
-========
-
-This release catches several buffer overruns, as well as addressing
-:cve:`2019-16865`. The CVE is regarding DOS problems, such as consuming large
-amounts of memory, or taking a large amount of time to process an image.
-
-In RawDecode.c, an error is now thrown if skip is calculated to be less than
-zero. It is intended to skip padding between lines, not to go backwards.
-
-In PsdImagePlugin, if the combined sizes of the individual parts is larger than
-the declared size of the extra data field, then it looked for the next layer by
-seeking backwards. This is now corrected by seeking to (the start of the layer
-+ the size of the extra data field) instead of (the read parts of the layer +
-the rest of the layer).
-
-Decompression bomb checks have been added to GIF and ICO formats.
-
-An error is now raised if a TIFF dimension is a string, rather than trying to
-perform operations on it.
-
 Other Changes
 =============
 
diff --git a/docs/releasenotes/6.2.1.rst b/docs/releasenotes/6.2.1.rst
index ca298fa70..372298fbc 100644
--- a/docs/releasenotes/6.2.1.rst
+++ b/docs/releasenotes/6.2.1.rst
@@ -18,8 +18,6 @@ Pillow 7.0.0 will be released on 2020-01-01 and will drop support for Python
 Other Changes
 =============
 
-
-
 Support added for Python 3.8
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
diff --git a/docs/releasenotes/6.2.2.rst b/docs/releasenotes/6.2.2.rst
index 47692a3de..85b0d0ba9 100644
--- a/docs/releasenotes/6.2.2.rst
+++ b/docs/releasenotes/6.2.2.rst
@@ -4,15 +4,17 @@
 Security
 ========
 
-This release addresses several security problems.
+This release fixes several buffer overflow issues and a DOS attack vulnerability.
 
-:cve:`2019-19911` is regarding FPX images. If an image reports that it has a large
-number of bands, a large amount of resources will be used when trying to process the
-image. This is fixed by limiting the number of bands to those usable by Pillow.
+:cve:`2020-5310`, :cve:`2020-5311`, :cve:`2020-5312`, :cve:`2020-5313`: Overflow checks added
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-Buffer overruns were found when processing an SGI (:cve:`2020-5311`),
-PCX (:cve:`2020-5312`) or FLI image (:cve:`2020-5313`). Checks have been added
-to prevent this.
+Overflow checks have been added when calculating the size of a memory block to be reallocated
+in the processing of TIFF, SGI, PCX and FLI images.
 
-:cve:`2020-5310`: Overflow checks have been added when calculating the size of a
-memory block to be reallocated in the processing of a TIFF image.
+:cve:`2019-19911`: DOS attack vulnerability
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+If an FPX image reports that it has a large number of bands, a large amount of
+resources will be used when trying to process the image. This is fixed by
+limiting the number of bands to those usable by Pillow.
diff --git a/docs/releasenotes/7.0.0.rst b/docs/releasenotes/7.0.0.rst
index f2e235289..ed6026593 100644
--- a/docs/releasenotes/7.0.0.rst
+++ b/docs/releasenotes/7.0.0.rst
@@ -85,7 +85,7 @@ Custom unidentified image error
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Pillow will now throw a custom ``UnidentifiedImageError`` when an image cannot be
-identified. For backwards compatibility, this will inherit from ``OSError``.
+identified. For backwards compatibility, this will inherit from :py:exc:`OSError`.
 
 New argument ``reducing_gap`` for Image.resize() and Image.thumbnail() methods
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/docs/releasenotes/7.1.0.rst b/docs/releasenotes/7.1.0.rst
index 6e231464e..0dd8669a5 100644
--- a/docs/releasenotes/7.1.0.rst
+++ b/docs/releasenotes/7.1.0.rst
@@ -1,6 +1,40 @@
 7.1.0
 -----
 
+Security
+========
+
+This release includes many security fixes.
+
+:cve:`2020-10177`: Multiple out-of-bounds reads in FLI decoding
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Pillow before 7.1.0 has multiple out-of-bounds reads in ``libImaging/FliDecode.c``.
+
+:cve:`2020-10378`: Bounds overflow in PCX decoding
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+In ``libImaging/PcxDecode.c`` in Pillow before 7.1.0, an out-of-bounds read can occur
+when reading PCX files where ``state->shuffle`` is instructed to read beyond
+``state->buffer``.
+
+:cve:`2020-10379`: Two buffer overflows in TIFF decoding
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+In Pillow before 7.1.0, there are two buffer overflows in ``libImaging/TiffDecode.c``.
+
+:cve:`2020-10994`: Bounds overflow in JPEG 2000 decoding
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+In ``libImaging/Jpeg2KDecode.c`` in Pillow before 7.1.0, there are multiple
+out-of-bounds reads via a crafted JP2 file.
+
+:cve:`2020-11538`: Buffer overflow in SGI-RLE decoding
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+In ``libImaging/SgiRleDecode.c`` in Pillow through 7.0.0, a number of out-of-bounds
+reads exist in the parsing of SGI image files, a different issue than :cve:`2020-5311`.
+
 API Changes
 ===========
 
@@ -67,17 +101,6 @@ Passing a different value on Windows or macOS will force taking a snapshot
 using the selected X server; pass an empty string to use the default X server.
 XCB support is not included in pre-compiled wheels for Windows and macOS.
 
-Security
-========
-
-This release includes security fixes.
-
-* :cve:`2020-10177` Fix multiple out-of-bounds reads in FLI decoding
-* :cve:`2020-10378` Fix bounds overflow in PCX decoding
-* :cve:`2020-10379` Fix two buffer overflows in TIFF decoding
-* :cve:`2020-10994` Fix bounds overflow in JPEG 2000 decoding
-* :cve:`2020-11538` Fix buffer overflow in SGI-RLE decoding
-
 Other Changes
 =============
 
diff --git a/docs/releasenotes/7.1.1.rst b/docs/releasenotes/7.1.1.rst
index 2169e6a05..4afdb6645 100644
--- a/docs/releasenotes/7.1.1.rst
+++ b/docs/releasenotes/7.1.1.rst
@@ -2,7 +2,7 @@
 -----
 
 Fix regression seeking PNG files
-================================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 This fixes a regression introduced in 7.1.0 when adding support for APNG files when calling
 ``seek`` and ``tell``:
diff --git a/docs/releasenotes/7.1.2.rst b/docs/releasenotes/7.1.2.rst
index b12d84e33..63a4b7aad 100644
--- a/docs/releasenotes/7.1.2.rst
+++ b/docs/releasenotes/7.1.2.rst
@@ -2,12 +2,12 @@
 -----
 
 Fix another regression seeking PNG files
-========================================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 This fixes a regression introduced in 7.1.0 when adding support for APNG files.
 
 When calling ``seek(n)`` on a regular PNG where ``n > 0``, it failed to raise an
-``EOFError`` as it should have done, resulting in:
+:py:exc:`EOFError` as it should have done, resulting in:
 
 .. code-block:: pycon
 
diff --git a/docs/releasenotes/7.2.0.rst b/docs/releasenotes/7.2.0.rst
index ff1b7c9e7..91e54da19 100644
--- a/docs/releasenotes/7.2.0.rst
+++ b/docs/releasenotes/7.2.0.rst
@@ -53,6 +53,6 @@ a custom :py:class:`~PIL.ImageShow.Viewer` class.
 ImageFile.raise_ioerror
 ~~~~~~~~~~~~~~~~~~~~~~~
 
-``IOError`` was merged into ``OSError`` in Python 3.3. So, ``ImageFile.raise_ioerror``
+:py:exc:`IOError` was merged into :py:exc:`OSError` in Python 3.3. So, ``ImageFile.raise_ioerror``
 is now deprecated and will be removed in a future release. Use
 ``ImageFile.raise_oserror`` instead.
diff --git a/docs/releasenotes/8.0.0.rst b/docs/releasenotes/8.0.0.rst
index fe2658047..1fc245c9a 100644
--- a/docs/releasenotes/8.0.0.rst
+++ b/docs/releasenotes/8.0.0.rst
@@ -30,7 +30,7 @@ Image.fromstring, im.fromstring and im.tostring
 ImageCms.CmsProfile attributes
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-Some attributes in :py:class:`PIL.ImageCms.CmsProfile` have been removed:
+Some attributes in :py:class:`PIL.ImageCms.core.CmsProfile` have been removed:
 
 ========================  ===================================================
 Removed                   Use instead
@@ -168,13 +168,10 @@ offset.
 Error for large BMP files
 ^^^^^^^^^^^^^^^^^^^^^^^^^
 
-Previously, if a BMP file was too large, an ``OSError`` would be raised. Now,
+Previously, if a BMP file was too large, an :py:exc:`OSError` would be raised. Now,
 ``DecompressionBombError`` is used instead, as Pillow already uses for other formats.
 
 Dark theme for docs
 ^^^^^^^^^^^^^^^^^^^
 
 The https://pillow.readthedocs.io documentation will use a dark theme if the user has requested the system use one. Uses the ``prefers-color-scheme`` CSS media query.
-
-
-
diff --git a/docs/releasenotes/8.0.1.rst b/docs/releasenotes/8.0.1.rst
index f7a1cea65..29a28443f 100644
--- a/docs/releasenotes/8.0.1.rst
+++ b/docs/releasenotes/8.0.1.rst
@@ -4,12 +4,13 @@
 Security
 ========
 
-Update FreeType used in binary wheels to `2.10.4`_ to fix :cve:`2020-15999`:
+:cve:`2020-15999`: Update FreeType in wheels to `2.10.4`_
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-  - A heap buffer overflow has been found  in the handling of embedded PNG bitmaps,
-    introduced in FreeType version 2.6.
+* A heap buffer overflow has been found  in the handling of embedded PNG bitmaps,
+  introduced in FreeType version 2.6.
 
-    If you use option ``FT_CONFIG_OPTION_USE_PNG`` you should upgrade immediately.
+* If you use option ``FT_CONFIG_OPTION_USE_PNG`` you should upgrade immediately.
 
 We strongly recommend updating to Pillow 8.0.1 if you are using Pillow 8.0.0, which improved support for bitmap fonts.
 
diff --git a/docs/releasenotes/8.1.0.rst b/docs/releasenotes/8.1.0.rst
index 69726e628..5c3993318 100644
--- a/docs/releasenotes/8.1.0.rst
+++ b/docs/releasenotes/8.1.0.rst
@@ -1,6 +1,50 @@
 8.1.0
 -----
 
+Security
+========
+
+This release includes security fixes.
+
+* An out-of-bounds read when saving TIFFs with custom metadata through LibTIFF
+* An out-of-bounds read when saving a GIF of 1px width
+
+:cve:`2020-35653`: Buffer read overrun in PCX decoding
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The PCX image decoder used the reported image stride to calculate
+the row buffer, rather than calculating it from the image size. This issue dates back
+to the PIL fork. Thanks to Google's `OSS-Fuzz`_ project for finding this.
+
+:cve:`2020-35654`: TIFF out-of-bounds write error
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Out-of-bounds write in ``TiffDecode.c`` when reading corrupt YCbCr
+files in some LibTIFF versions (4.1.0/Ubuntu 20.04, but not 4.0.9/Ubuntu 18.04).
+In some cases LibTIFF's interpretation of the file is different when reading in RGBA mode,
+leading to an out-of-bounds write in ``TiffDecode.c``. This potentially affects Pillow
+versions from 6.0.0 to 8.0.1, depending on the version of LibTIFF. This was reported through
+`Tidelift`_.
+
+:cve:`2020-35655`: SGI Decode buffer overrun
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+4 byte read overflow in ``SgiRleDecode.c``, where the code was not correctly
+checking the offsets and length tables. Independently reported through `Tidelift`_ and Google's
+`OSS-Fuzz`_. This vulnerability covers Pillow versions 4.3.0->8.0.1.
+
+.. _Tidelift: https://tidelift.com/subscription/pkg/pypi-pillow?utm_source=pillow&utm_medium=referral&utm_campaign=docs
+.. _OSS-Fuzz: https://github.com/google/oss-fuzz
+
+Dependencies
+^^^^^^^^^^^^
+
+OpenJPEG in the macOS and Linux wheels has been updated from 2.3.1 to 2.4.0, including
+security fixes.
+
+LibTIFF in the macOS and Linux wheels has been updated from 4.1.0 to 4.2.0, including
+security fixes discovered by fuzzers.
+
 Deprecations
 ============
 
@@ -33,46 +77,6 @@ With this release, a list of images can be provided to the ``append_images`` par
 when saving, to replace the scaled down versions. This is the same functionality that
 already exists for the ICNS format.
 
-Security
-========
-
-This release includes security fixes.
-
-* An out-of-bounds read when saving TIFFs with custom metadata through LibTIFF
-* An out-of-bounds read when saving a GIF of 1px width
-* :cve:`2020-35653` Buffer read overrun in PCX decoding
-
-The PCX image decoder used the reported image stride to calculate the row buffer,
-rather than calculating it from the image size. This issue dates back to the PIL fork.
-Thanks to Google's `OSS-Fuzz`_ project for finding this.
-
-* :cve:`2020-35654` Fix TIFF out-of-bounds write error
-
-Out-of-bounds write in ``TiffDecode.c`` when reading corrupt YCbCr files in some
-LibTIFF versions (4.1.0/Ubuntu 20.04, but not 4.0.9/Ubuntu 18.04). In some cases
-LibTIFF's interpretation of the file is different when reading in RGBA mode, leading to
-an out-of-bounds write in ``TiffDecode.c``. This potentially affects Pillow versions
-from 6.0.0 to 8.0.1, depending on the version of LibTIFF. This was reported through
-`Tidelift`_.
-
-* :cve:`2020-35655` Fix for SGI Decode buffer overrun
-
-4 byte read overflow in ``SgiRleDecode.c``, where the code was not correctly checking the
-offsets and length tables. Independently reported through `Tidelift`_ and Google's
-`OSS-Fuzz`_. This vulnerability covers Pillow versions 4.3.0->8.0.1.
-
-.. _Tidelift: https://tidelift.com/subscription/pkg/pypi-pillow?utm_source=pillow&utm_medium=referral&utm_campaign=docs
-.. _OSS-Fuzz: https://github.com/google/oss-fuzz
-
-Dependencies
-^^^^^^^^^^^^
-
-OpenJPEG in the macOS and Linux wheels has been updated from 2.3.1 to 2.4.0, including
-security fixes.
-
-LibTIFF in the macOS and Linux wheels has been updated from 4.1.0 to 4.2.0, including
-security fixes discovered by fuzzers.
-
 Other Changes
 =============
 
diff --git a/docs/releasenotes/8.1.1.rst b/docs/releasenotes/8.1.1.rst
index 18d0a33f1..690421c2a 100644
--- a/docs/releasenotes/8.1.1.rst
+++ b/docs/releasenotes/8.1.1.rst
@@ -4,21 +4,33 @@
 Security
 ========
 
-:cve:`2021-25289`: The previous fix for :cve:`2020-35654` was insufficient
-due to incorrect error checking in ``TiffDecode.c``.
+:cve:`2021-25289`: Correct the fix for :cve:`2020-35654`
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-:cve:`2021-25290`: In ``TiffDecode.c``, there is a negative-offset ``memcpy``
-with an invalid size.
+The previous fix for :cve:`2020-35654` was insufficient due to incorrect
+error checking in ``TiffDecode.c``.
 
-:cve:`2021-25291`: In ``TiffDecode.c``, invalid tile boundaries could lead to
-an out-of-bounds read in ``TIFFReadRGBATile``.
+:cve:`2021-25290`: Fix buffer overflow in ``TiffDecode.c``
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-:cve:`2021-25292`: The PDF parser has a catastrophic backtracking regex
-that could be used as a DOS attack.
+In ``TiffDecode.c``, there is a negative-offset ``memcpy`` with an invalid size.
 
-:cve:`2021-25293`: There is an out-of-bounds read in ``SgiRleDecode.c``,
-since Pillow 4.3.0.
+:cve:`2021-25291`: Fix buffer overflow in ``TIFFReadRGBATile``
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
+In ``TiffDecode.c``, invalid tile boundaries could lead to an out-of-bounds
+read in ``TIFFReadRGBATile``.
+
+:cve:`2021-25292`: Fix DOS attack
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The PDF parser has a catastrophic backtracking regex that could be used as a
+DOS attack.
+
+:cve:`2021-25293`: Fix buffer overflow in ``SgiRleDecode.c``
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+There is an out-of-bounds read in ``SgiRleDecode.c`` since Pillow 4.3.0.
 
 Other Changes
 =============
diff --git a/docs/releasenotes/8.1.2.rst b/docs/releasenotes/8.1.2.rst
index de50a3f1d..de6ba605e 100644
--- a/docs/releasenotes/8.1.2.rst
+++ b/docs/releasenotes/8.1.2.rst
@@ -4,9 +4,12 @@
 Security
 ========
 
-There is an exhaustion of memory DOS in the BLP (:cve:`2021-27921`),
-ICNS (:cve:`2021-27922`) and ICO (:cve:`2021-27923`) container formats
+:cve:`2021-27921`, :cve:`2021-27922`, :cve:`2021-27923`: Fix DOS attacks
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+There is an exhaustion of memory DOS attack in BLP, ICNS, ICO images
 where Pillow did not properly check the reported size of the contained image.
-These images could cause arbitrarily large memory allocations. This was reported
-by Jiayi Lin, Luke Shaffer, Xinran Xie, and Akshay Ajayan of
-`Arizona State University <https://www.asu.edu/>`_.
+These images could cause arbitrarily large memory allocations.
+
+These issues were reported by Jiayi Lin, Luke Shaffer, Xinran Xie and
+Akshay Ajayan of `Arizona State University <https://www.asu.edu/>`_.
diff --git a/docs/releasenotes/8.2.0.rst b/docs/releasenotes/8.2.0.rst
index 452077f1a..50fe9aa19 100644
--- a/docs/releasenotes/8.2.0.rst
+++ b/docs/releasenotes/8.2.0.rst
@@ -1,6 +1,60 @@
 8.2.0
 -----
 
+Security
+========
+
+These issues were all found with `OSS-Fuzz`_.
+
+:cve:`2021-25287`, :cve:`2021-25288`: OOB read in Jpeg2KDecode
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+* For J2k images with multiple bands, it's legal to have different widths for each band,
+  e.g. 1 byte for ``L``, 4 bytes for ``A``.
+* This dates to Pillow 2.4.0.
+
+:cve:`2021-28675`: DOS attack in PsdImagePlugin
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+* :py:class:`.PsdImagePlugin.PsdImageFile` did not sanity check the number of input
+  layers with regard to the size of the data block, this could lead to a
+  denial-of-service on :py:meth:`~PIL.Image.open` prior to
+  :py:meth:`~PIL.Image.Image.load`.
+* This dates to the PIL fork.
+
+:cve:`2021-28676`: FLI image DOS attack
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+* ``FliDecode.c`` did not properly check that the block advance was non-zero,
+  potentially leading to an infinite loop on load.
+* This dates to the PIL fork.
+
+:cve:`2021-28677`: EPS DOS on _open
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+* The readline used in EPS has to deal with any combination of ``\r`` and ``\n`` as line
+  endings. It accidentally used a quadratic method of accumulating lines while looking
+  for a line ending.
+* A malicious EPS file could use this to perform a denial-of-service of Pillow in the
+  open phase, before an image was accepted for opening.
+* This dates to the PIL fork.
+
+:cve:`2021-28678`: BLP DOS attack
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+* ``BlpImagePlugin`` did not properly check that reads after jumping to file offsets
+  returned data. This could lead to a denial-of-service where the decoder could be run a
+  large number of times on empty data.
+* This dates to Pillow 5.1.0.
+
+Fix memory DOS in ImageFont
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+* A corrupt or specially crafted TTF font could have font metrics that lead to
+  unreasonably large sizes when rendering text in font. ``ImageFont.py`` did not check
+  the image size before allocating memory for it.
+* This dates to the PIL fork.
+
 Deprecations
 ============
 
@@ -123,61 +177,6 @@ be specified through a keyword argument::
 
     im.save("out.tif", icc_profile=...)
 
-
-Security
-========
-
-These were all found with `OSS-Fuzz`_.
-
-:cve:`2021-25287`, :cve:`2021-25288`: Fix OOB read in Jpeg2KDecode
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-* For J2k images with multiple bands, it's legal to have different widths for each band,
-  e.g. 1 byte for ``L``, 4 bytes for ``A``.
-* This dates to Pillow 2.4.0.
-
-:cve:`2021-28675`: Fix DOS in PsdImagePlugin
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-* :py:class:`.PsdImagePlugin.PsdImageFile` did not sanity check the number of input
-  layers with regard to the size of the data block, this could lead to a
-  denial-of-service on :py:meth:`~PIL.Image.open` prior to
-  :py:meth:`~PIL.Image.Image.load`.
-* This dates to the PIL fork.
-
-:cve:`2021-28676`: Fix FLI DOS
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-* ``FliDecode.c`` did not properly check that the block advance was non-zero,
-  potentially leading to an infinite loop on load.
-* This dates to the PIL fork.
-
-:cve:`2021-28677`: Fix EPS DOS on _open
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-* The readline used in EPS has to deal with any combination of ``\r`` and ``\n`` as line
-  endings. It accidentally used a quadratic method of accumulating lines while looking
-  for a line ending.
-* A malicious EPS file could use this to perform a denial-of-service of Pillow in the
-  open phase, before an image was accepted for opening.
-* This dates to the PIL fork.
-
-:cve:`2021-28678`: Fix BLP DOS
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-* ``BlpImagePlugin`` did not properly check that reads after jumping to file offsets
-  returned data. This could lead to a denial-of-service where the decoder could be run a
-  large number of times on empty data.
-* This dates to Pillow 5.1.0.
-
-Fix memory DOS in ImageFont
-^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-* A corrupt or specially crafted TTF font could have font metrics that lead to
-  unreasonably large sizes when rendering text in font. ``ImageFont.py`` did not check
-  the image size before allocating memory for it.
-* This dates to the PIL fork.
-
 Other Changes
 =============
 
diff --git a/docs/releasenotes/8.3.0.rst b/docs/releasenotes/8.3.0.rst
index e74880f6f..4ef914f64 100644
--- a/docs/releasenotes/8.3.0.rst
+++ b/docs/releasenotes/8.3.0.rst
@@ -1,6 +1,27 @@
 8.3.0
 -----
 
+Security
+========
+
+:cve:`2021-34552`: Fix buffer overflow
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+PIL since 1.1.4 and Pillow since 1.0 allowed parameters passed into a convert
+function to trigger buffer overflow in ``Convert.c``.
+
+Parsing XML
+^^^^^^^^^^^
+
+Pillow previously parsed XMP data using Python's ``xml`` module. However, this module
+is not secure.
+
+- :py:meth:`~PIL.Image.Image.getexif` has used ``xml`` to potentially retrieve
+  orientation data since Pillow 7.2.0. It has been refactored to use ``re`` instead.
+- ``getxmp()`` was added to :py:class:`~PIL.JpegImagePlugin.JpegImageFile` in Pillow
+  8.2.0. It will now use ``defusedxml`` instead. If the dependency is not present, an
+  empty dictionary will be returned and a warning raised.
+
 Deprecations
 ============
 
@@ -79,28 +100,6 @@ format, through the new ``bitmap_format`` argument::
 
     im.save("out.ico", bitmap_format="bmp")
 
-Security
-========
-
-Buffer overflow
-^^^^^^^^^^^^^^^
-
-This release addresses :cve:`2021-34552`. PIL since 1.1.4 and Pillow since 1.0
-allowed parameters passed into a convert function to trigger buffer overflow in
-Convert.c.
-
-Parsing XML
-^^^^^^^^^^^
-
-Pillow previously parsed XMP data using Python's ``xml`` module. However, this module
-is not secure.
-
-- :py:meth:`~PIL.Image.Image.getexif` has used ``xml`` to potentially retrieve
-  orientation data since Pillow 7.2.0. It has been refactored to use ``re`` instead.
-- :py:meth:`~PIL.JpegImagePlugin.JpegImageFile.getxmp` was added in Pillow 8.2.0. It
-  will now use ``defusedxml`` instead. If the dependency is not present, an empty
-  dictionary will be returned and a warning raised.
-
 Other Changes
 =============
 
diff --git a/docs/releasenotes/8.3.1.rst b/docs/releasenotes/8.3.1.rst
index e97070c11..edcda3d61 100644
--- a/docs/releasenotes/8.3.1.rst
+++ b/docs/releasenotes/8.3.1.rst
@@ -2,7 +2,7 @@
 -----
 
 Fixed regression converting to NumPy arrays
-===========================================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 This fixes a regression introduced in 8.3.0 when converting an image to a NumPy array
 with a ``dtype`` argument.
@@ -19,22 +19,23 @@ with a ``dtype`` argument.
     >>>
 
 Catch OSError when checking if destination is sys.stdout
-========================================================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 In 8.3.0, a check to see if the destination was ``sys.stdout`` when saving an image was
-updated. This lead to an OSError being raised if the environment restricted access.
+updated. This lead to an :py:exc:`OSError` being raised if the environment restricted
+access.
 
-The OSError is now silently caught.
+The :py:exc:`OSError` is now silently caught.
 
 Fixed removing orientation in ImageOps.exif_transpose
-=====================================================
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 In 8.3.0, :py:meth:`~PIL.ImageOps.exif_transpose` was changed to ensure that the
 original image EXIF data was not modified, and the orientation was only removed from
 the modified copy.
 
 However, for certain images the orientation was already missing from the modified
-image, leading to a KeyError.
+image, leading to a :py:exc:`KeyError`.
 
 This error has been resolved, and the copying of metadata to the modified image
 improved.
diff --git a/docs/releasenotes/8.3.2.rst b/docs/releasenotes/8.3.2.rst
index 3333d63a1..34ba703f7 100644
--- a/docs/releasenotes/8.3.2.rst
+++ b/docs/releasenotes/8.3.2.rst
@@ -4,14 +4,21 @@
 Security
 ========
 
-* :cve:`2021-23437`: Avoid a potential ReDoS (regular expression denial of service)
-  in :py:class:`~PIL.ImageColor`'s :py:meth:`~PIL.ImageColor.getrgb` by raising
-  :py:exc:`ValueError` if the color specifier is too long. Present since Pillow 5.2.0.
+:cve:`2021-23437`: Avoid potential ReDoS (regular expression denial of service)
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-* Fix 6-byte out-of-bounds (OOB) read. The previous bounds check in ``FliDecode.c``
-  incorrectly calculated the required read buffer size when copying a chunk, potentially
-  reading six extra bytes off the end of the allocated buffer from the heap. Present
-  since Pillow 7.1.0. This bug was found by Google's `OSS-Fuzz`_ `CIFuzz`_ runs.
+Avoid a potential ReDoS (regular expression denial of service) in :py:class:`~PIL.ImageColor`'s
+:py:meth:`~PIL.ImageColor.getrgb` by raising :py:exc:`ValueError` if the color specifier is
+too long. Present since Pillow 5.2.0.
+
+Fix 6-byte out-of-bounds (OOB) read
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Fix 6-byte out-of-bounds (OOB) read. The previous bounds check in ``FliDecode.c`` incorrectly
+calculated the required read buffer size when copying a chunk, potentially reading six extra
+bytes off the end of the allocated buffer from the heap. Present since Pillow 7.1.0.
+
+This bug was found by Google's `OSS-Fuzz`_ `CIFuzz`_ runs.
 
 Other Changes
 =============
diff --git a/docs/releasenotes/8.4.0.rst b/docs/releasenotes/8.4.0.rst
index e61471e72..bdc8e8020 100644
--- a/docs/releasenotes/8.4.0.rst
+++ b/docs/releasenotes/8.4.0.rst
@@ -1,14 +1,11 @@
 8.4.0
 -----
 
-API Changes
-===========
-
 Deprecations
-^^^^^^^^^^^^
+============
 
 ImagePalette size parameter
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The ``size`` parameter will be removed in Pillow 10.0.0 (2023-07-01).
 
diff --git a/docs/releasenotes/9.0.0.rst b/docs/releasenotes/9.0.0.rst
index 73e77ad3e..fee66b6d0 100644
--- a/docs/releasenotes/9.0.0.rst
+++ b/docs/releasenotes/9.0.0.rst
@@ -24,6 +24,41 @@ success of Python.
 
 Thank you, Fredrik.
 
+Security
+========
+
+Ensure JpegImagePlugin stops at the end of a truncated file
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+``JpegImagePlugin`` may append an EOF marker to the end of a truncated file, so that
+the last segment of the data will still be processed by the decoder.
+
+If the EOF marker is not detected as such however, this could lead to an infinite
+loop where ``JpegImagePlugin`` keeps trying to end the file.
+
+Remove consecutive duplicate tiles that only differ by their offset
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+To prevent attempts to slow down loading times for images, if an image has consecutive
+duplicate tiles that only differ by their offset, only load the last tile. Credit to
+Google's `OSS-Fuzz`_ project for finding this issue.
+
+:cve:`2022-22817`: Restrict builtins available to ImageMath.eval
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+To limit :py:class:`PIL.ImageMath` to working with images, Pillow
+will now restrict the builtins available to :py:meth:`!PIL.ImageMath.eval`. This will
+help prevent problems arising if users evaluate arbitrary expressions, such as
+``ImageMath.eval("exec(exit())")``.
+
+:cve:`2022-22815`, :cve:`2022-22816`: ImagePath.Path array handling
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+:cve:`2022-22815` (:cwe:`126`) and :cve:`2022-22816` (:cwe:`665`) were found when
+initializing ``ImagePath.Path``.
+
+.. _OSS-Fuzz: https://github.com/google/oss-fuzz
+
 Backwards Incompatible Changes
 ==============================
 
@@ -63,7 +98,7 @@ a custom :py:class:`~PIL.ImageShow.Viewer` class.
 ImageFile.raise_ioerror
 ^^^^^^^^^^^^^^^^^^^^^^^
 
-``IOError`` was merged into ``OSError`` in Python 3.3. So, ``ImageFile.raise_ioerror``
+:py:exc:`IOError` was merged into :py:exc:`OSError` in Python 3.3. So, ``ImageFile.raise_ioerror``
 has been removed. Use ``ImageFile.raise_oserror`` instead.
 
 
@@ -97,41 +132,6 @@ Support has been added for the "title" argument in
 argument will also now be supported, e.g. ``im.show(title="My Image")`` and
 ``ImageShow.show(im, title="My Image")``.
 
-Security
-========
-
-Ensure JpegImagePlugin stops at the end of a truncated file
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-``JpegImagePlugin`` may append an EOF marker to the end of a truncated file, so that
-the last segment of the data will still be processed by the decoder.
-
-If the EOF marker is not detected as such however, this could lead to an infinite
-loop where ``JpegImagePlugin`` keeps trying to end the file.
-
-Remove consecutive duplicate tiles that only differ by their offset
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-To prevent attempts to slow down loading times for images, if an image has consecutive
-duplicate tiles that only differ by their offset, only load the last tile. Credit to
-Google's `OSS-Fuzz`_ project for finding this issue.
-
-Restrict builtins available to ImageMath.eval
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-:cve:`2022-22817`: To limit :py:class:`PIL.ImageMath` to working with images, Pillow
-will now restrict the builtins available to :py:meth:`PIL.ImageMath.eval`. This will
-help prevent problems arising if users evaluate arbitrary expressions, such as
-``ImageMath.eval("exec(exit())")``.
-
-Fixed ImagePath.Path array handling
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-:cve:`2022-22815` (:cwe:`126`) and :cve:`2022-22816` (:cwe:`665`) were
-found when initializing ``ImagePath.Path``.
-
-.. _OSS-Fuzz: https://github.com/google/oss-fuzz
-
 Other Changes
 =============
 
diff --git a/docs/releasenotes/9.0.1.rst b/docs/releasenotes/9.0.1.rst
index acb92dc41..f65e3bcc2 100644
--- a/docs/releasenotes/9.0.1.rst
+++ b/docs/releasenotes/9.0.1.rst
@@ -6,14 +6,20 @@ Security
 
 This release addresses several security problems.
 
-:cve:`2022-24303`: If the path to the temporary directory on Linux or macOS
+:cve:`2022-24303`: Temp image removal
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+If the path to the temporary directory on Linux or macOS
 contained a space, this would break removal of the temporary image file after
 ``im.show()`` (and related actions), and potentially remove an unrelated file. This
 has been present since PIL.
 
-:cve:`2022-22817`: While Pillow 9.0 restricted top-level builtins available to
-:py:meth:`PIL.ImageMath.eval`, it did not prevent builtins available to lambda
-expressions. These are now also restricted.
+:cve:`2022-22817`: Restrict lambda expressions
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+While Pillow 9.0 restricted top-level builtins available to
+:py:meth:`!PIL.ImageMath.eval`, it did not prevent builtins
+available to lambda expressions. These are now also restricted.
 
 Other Changes
 =============
diff --git a/docs/releasenotes/9.1.0.rst b/docs/releasenotes/9.1.0.rst
index 19690ca59..5b83d1e9c 100644
--- a/docs/releasenotes/9.1.0.rst
+++ b/docs/releasenotes/9.1.0.rst
@@ -1,49 +1,6 @@
 9.1.0
 -----
 
-API Changes
-===========
-
-Raise an error when performing a negative crop
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Performing a negative crop on an image previously just returned a ``(0, 0)`` image. Now
-it will raise a ``ValueError``, to help reduce confusion if a user has unintentionally
-provided the wrong arguments.
-
-Added specific error if path coordinate type is incorrect
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Rather than returning a ``SystemError``, passing the incorrect types of coordinates into
-a path will now raise a more specific ``ValueError``, with the message "incorrect
-coordinate type".
-
-Replace requirements.txt with extras
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Rather than installing all dependencies for docs and tests via ``requirements.txt``,
-``extras_require`` is used instead. This installs only those needed and at the same
-time as installing Pillow.
-
-For example:
-
-.. code-block:: bash
-
-    # Install with dependencies for tests:
-    python3 -m pip install .[tests]
-
-    # Or for building docs:
-    python3 -m pip install .[docs]
-
-    # Or for all:
-    python3 -m pip install .[docs,tests]
-
-On macOS, the last argument may need to be wrapped in quotes, e.g.
-``python3 -m pip install ".[tests]"``
-
-Therefore ``requirements.txt`` has been removed along with the ``make install-req``
-command for installing its contents.
-
 Deprecations
 ============
 
@@ -51,7 +8,7 @@ Constants
 ^^^^^^^^^
 
 A number of constants have been deprecated and will be removed in Pillow 10.0.0
-(2023-07-01). Instead, ``enum.IntEnum`` classes have been added.
+(2023-07-01). Instead, :py:class:`enum.IntEnum` classes have been added.
 
 .. note::
 
@@ -137,6 +94,49 @@ The stub image plugin ``FitsStubImagePlugin`` has been deprecated and will be re
 Pillow 10.0.0 (2023-07-01). FITS images can be read without a handler through
 :mod:`~PIL.FitsImagePlugin` instead.
 
+API Changes
+===========
+
+Raise an error when performing a negative crop
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Performing a negative crop on an image previously just returned a ``(0, 0)`` image. Now
+it will raise a :py:exc:`ValueError`, to help reduce confusion if a user has unintentionally
+provided the wrong arguments.
+
+Added specific error if path coordinate type is incorrect
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Rather than returning a :py:exc:`SystemError`, passing the incorrect types of coordinates into
+a path will now raise a more specific :py:exc:`ValueError`, with the message "incorrect
+coordinate type".
+
+Replace requirements.txt with extras
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Rather than installing all dependencies for docs and tests via ``requirements.txt``,
+``extras_require`` is used instead. This installs only those needed and at the same
+time as installing Pillow.
+
+For example:
+
+.. code-block:: bash
+
+    # Install with dependencies for tests:
+    python3 -m pip install .[tests]
+
+    # Or for building docs:
+    python3 -m pip install .[docs]
+
+    # Or for all:
+    python3 -m pip install .[docs,tests]
+
+On macOS, the last argument may need to be wrapped in quotes, e.g.
+``python3 -m pip install ".[tests]"``
+
+Therefore ``requirements.txt`` has been removed along with the ``make install-req``
+command for installing its contents.
+
 API Additions
 =============
 
diff --git a/docs/releasenotes/9.1.1.rst b/docs/releasenotes/9.1.1.rst
index bab70f8f9..746bec4d4 100644
--- a/docs/releasenotes/9.1.1.rst
+++ b/docs/releasenotes/9.1.1.rst
@@ -4,13 +4,19 @@
 Security
 ========
 
-This release addresses several security problems.
+This release addresses several security issues.
 
-:cve:`2022-30595`: When reading a TGA file with RLE packets that cross scan lines,
+:cve:`2022-30595`: Heap buffer overflow
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+When reading a TGA file with RLE packets that cross scan lines,
 Pillow reads the information past the end of the first line without deducting that
 from the length of the remaining file data. This vulnerability was introduced in Pillow
 9.1.0, and can cause a heap buffer overflow.
 
+Decompression bomb check fix
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
 Opening an image with a zero or negative height has been found to bypass a
 decompression bomb check. This will now raise a :py:exc:`SyntaxError` instead, in turn
 raising a ``PIL.UnidentifiedImageError``.
diff --git a/docs/releasenotes/9.2.0.rst b/docs/releasenotes/9.2.0.rst
index b875edf8e..6e0647343 100644
--- a/docs/releasenotes/9.2.0.rst
+++ b/docs/releasenotes/9.2.0.rst
@@ -1,6 +1,11 @@
 9.2.0
 -----
 
+Security
+========
+
+An additional decompression bomb check has been added for the GIF format.
+
 Deprecations
 ============
 
@@ -69,10 +74,10 @@ Previous code::
 
     im = Image.new("RGB", (100, 100))
     draw = ImageDraw.Draw(im)
-    width, height = draw.textsize("Hello world")
+    width, height = draw.textsize("Hello world", font)
 
     width, height = font.getsize_multiline("Hello\nworld")
-    width, height = draw.multiline_textsize("Hello\nworld")
+    width, height = draw.multiline_textsize("Hello\nworld", font)
 
 Use instead::
 
@@ -84,11 +89,43 @@ Use instead::
 
     im = Image.new("RGB", (100, 100))
     draw = ImageDraw.Draw(im)
-    width = draw.textlength("Hello world")
+    width = draw.textlength("Hello world", font)
 
-    left, top, right, bottom = draw.multiline_textbbox((0, 0), "Hello\nworld")
+    left, top, right, bottom = draw.multiline_textbbox((0, 0), "Hello\nworld", font)
     width, height = right - left, bottom - top
 
+Previously, the ``size`` methods returned a ``height`` that included the vertical
+offset of the text, while the new ``bbox`` methods distinguish this as a ``top``
+offset.
+
+.. image:: ../example/size_vs_bbox.webp
+    :alt: In bbox methods, top measures the vertical distance above the text, while bottom measures that plus the vertical distance of the text itself. In size methods, height also measures the vertical distance above the text plus the vertical distance of the text itself.
+    :align: center
+
+If you are using these methods for aligning text, consider using :ref:`text-anchors` instead
+which avoid issues that can occur with non-English text or unusual fonts.
+For example, instead of the following code::
+
+    from PIL import Image, ImageDraw, ImageFont
+
+    font = ImageFont.truetype("Tests/fonts/FreeMono.ttf")
+
+    im = Image.new("RGB", (100, 100))
+    draw = ImageDraw.Draw(im)
+    width, height = draw.textsize("Hello world", font)
+    x, y = (100 - width) / 2, (100 - height) / 2
+    draw.text((x, y), "Hello world", font=font)
+
+Use instead::
+
+    from PIL import Image, ImageDraw, ImageFont
+
+    font = ImageFont.truetype("Tests/fonts/FreeMono.ttf")
+
+    im = Image.new("RGB", (100, 100))
+    draw = ImageDraw.Draw(im)
+    draw.text((100 / 2, 100 / 2), "Hello world", font=font, anchor="mm")
+
 API Additions
 =============
 
@@ -100,11 +137,6 @@ with "transparency" in ``im.info``, and apply the transparency to the palette in
 The image's palette mode will become "RGBA", and "transparency" will be removed from
 ``im.info``.
 
-Security
-========
-
-An additional decompression bomb check has been added for the GIF format.
-
 Other Changes
 =============
 
diff --git a/docs/releasenotes/9.3.0.rst b/docs/releasenotes/9.3.0.rst
index fde2faae3..e5987ce08 100644
--- a/docs/releasenotes/9.3.0.rst
+++ b/docs/releasenotes/9.3.0.rst
@@ -1,6 +1,33 @@
 9.3.0
 -----
 
+Security
+========
+
+Initialize libtiff buffer when saving
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+When saving a TIFF image to a file object using libtiff, the buffer was not
+initialized. This behaviour introduced in Pillow 2.0.0, and has now been fixed.
+
+Decode JPEG compressed BLP1 data in original mode
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Within the BLP image format, BLP1 data may use JPEG compression. Instead of
+telling the JPEG library that this data is in BGRX mode, Pillow will now
+decode the data in its natural CMYK mode, then convert it to RGB and rearrange
+the channels afterwards. Trying to load the data in an incorrect mode could
+result in a segmentation fault. This issue was introduced in Pillow 9.1.0.
+
+Limit SAMPLESPERPIXEL to avoid runtime DOS
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+A large value in the ``SAMPLESPERPIXEL`` tag could lead to a memory and runtime DOS in
+``TiffImagePlugin.py`` when setting up the context for image decoding.
+This was introduced in Pillow 9.2.0, found with `OSS-Fuzz`_ and fixed by limiting
+``SAMPLESPERPIXEL`` to the number of planes that we can decode.
+
+
 API Additions
 =============
 
@@ -33,35 +60,9 @@ Added ExifTags enums
 ^^^^^^^^^^^^^^^^^^^^
 
 The data from :py:data:`~PIL.ExifTags.TAGS` and
-:py:data:`~PIL.ExifTags.GPSTAGS` is now also exposed as ``enum.IntEnum``
-classes: :py:data:`~PIL.ExifTags.Base` and :py:data:`~PIL.ExifTags.GPS`.
-
-
-Security
-========
-
-Initialize libtiff buffer when saving
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-When saving a TIFF image to a file object using libtiff, the buffer was not
-initialized. This behaviour introduced in Pillow 2.0.0, and has now been fixed.
-
-Decode JPEG compressed BLP1 data in original mode
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Within the BLP image format, BLP1 data may use JPEG compression. Instead of
-telling the JPEG library that this data is in BGRX mode, Pillow will now
-decode the data in its natural CMYK mode, then convert it to RGB and rearrange
-the channels afterwards. Trying to load the data in an incorrect mode could
-result in a segmentation fault. This issue was introduced in Pillow 9.1.0.
-
-Limit SAMPLESPERPIXEL to avoid runtime DOS
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-A large value in the ``SAMPLESPERPIXEL`` tag could lead to a memory and runtime DOS in
-``TiffImagePlugin.py`` when setting up the context for image decoding.
-This was introduced in Pillow 9.2.0, found with `OSS-Fuzz`_ and fixed by limiting
-``SAMPLESPERPIXEL`` to the number of planes that we can decode.
+:py:data:`~PIL.ExifTags.GPSTAGS` is now also exposed as
+:py:class:`enum.IntEnum` classes: :py:data:`~PIL.ExifTags.Base` and
+:py:data:`~PIL.ExifTags.GPS`.
 
 
 Other Changes
diff --git a/docs/releasenotes/9.4.0.rst b/docs/releasenotes/9.4.0.rst
index 0af5bc8ca..37f26a22c 100644
--- a/docs/releasenotes/9.4.0.rst
+++ b/docs/releasenotes/9.4.0.rst
@@ -1,6 +1,25 @@
 9.4.0
 -----
 
+Security
+========
+
+Fix memory DOS in ImageFont
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+A corrupt or specially crafted TTF font could have font metrics that lead to
+unreasonably large sizes when rendering text in font. ``ImageFont.py`` did not
+check the image size before allocating memory for it. This dates to the PIL
+fork. Pillow 8.2.0 added a check for large sizes, but did not consider the
+case where one dimension is zero.
+
+Null pointer dereference crash in ImageFont
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Pillow attempted to dereference a null pointer in ``ImageFont``, leading to a
+crash. An error is now raised instead. This has been present since
+Pillow 8.0.0.
+
 API Additions
 =============
 
@@ -69,25 +88,6 @@ When saving a JPEG image, a comment can now be written from
 
     im.save(out, comment="Test comment")
 
-Security
-========
-
-Fix memory DOS in ImageFont
-^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-A corrupt or specially crafted TTF font could have font metrics that lead to
-unreasonably large sizes when rendering text in font. ``ImageFont.py`` did not
-check the image size before allocating memory for it. This dates to the PIL
-fork. Pillow 8.2.0 added a check for large sizes, but did not consider the
-case where one dimension is zero.
-
-Null pointer dereference crash in ImageFont
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Pillow attempted to dereference a null pointer in ``ImageFont``, leading to a
-crash. An error is now raised instead. This has been present since
-Pillow 8.0.0.
-
 Other Changes
 =============
 
diff --git a/docs/releasenotes/9.5.0.rst b/docs/releasenotes/9.5.0.rst
index b1e982fcc..501479bb6 100644
--- a/docs/releasenotes/9.5.0.rst
+++ b/docs/releasenotes/9.5.0.rst
@@ -1,13 +1,38 @@
 9.5.0
 -----
 
+Security
+========
+
+Clear PPM half token after use
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Image files that are small on disk are often prevented from expanding to be
+big images consuming a large amount of resources simply because they lack the
+data to populate those resources.
+
+PpmImagePlugin might hold onto the last data read for a pixel value in case the
+pixel value has not been finished yet. However, that data was not being cleared
+afterwards, meaning that infinite data could be available to fill any image
+size. This has been present since Pillow 9.2.0.
+
+That data is now cleared after use.
+
+Saving TIFF tag ImageSourceData
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+If Pillow incorrectly saved the TIFF tag ImageSourceData as ASCII instead of
+UNDEFINED, a segmentation fault was triggered.
+
+The correct tag type will now be used by default instead.
+
 Deprecations
 ============
 
 PSFile
 ^^^^^^
 
-The :py:class:`~PIL.EpsImagePlugin.PSFile` class has been deprecated and will
+The :py:class:`!PSFile` class has been deprecated and will
 be removed in Pillow 11 (2024-10-15). This class was only made as a helper to
 be used internally, so there is no replacement. If you need this functionality
 though, it is a very short class that can easily be recreated in your own code.
@@ -46,31 +71,6 @@ If OpenJPEG 2.4.0 or later is available and the ``plt`` keyword argument
 is present and true when saving JPEG2000 images, tell the encoder to generate
 PLT markers.
 
-Security
-========
-
-Clear PPM half token after use
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Image files that are small on disk are often prevented from expanding to be
-big images consuming a large amount of resources simply because they lack the
-data to populate those resources.
-
-PpmImagePlugin might hold onto the last data read for a pixel value in case the
-pixel value has not been finished yet. However, that data was not being cleared
-afterwards, meaning that infinite data could be available to fill any image
-size. This has been present since Pillow 9.2.0.
-
-That data is now cleared after use.
-
-Saving TIFF tag ImageSourceData
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-If Pillow incorrectly saved the TIFF tag ImageSourceData as ASCII instead of
-UNDEFINED, a segmentation fault was triggered.
-
-The correct tag type will now be used by default instead.
-
 Other Changes
 =============
 
diff --git a/docs/releasenotes/index.rst b/docs/releasenotes/index.rst
index 9bca98541..641cda4ef 100644
--- a/docs/releasenotes/index.rst
+++ b/docs/releasenotes/index.rst
@@ -14,6 +14,12 @@ expected to be backported to earlier versions.
 .. toctree::
   :maxdepth: 2
 
+  11.0.0
+  10.4.0
+  10.3.0
+  10.2.0
+  10.1.0
+  10.0.1
   10.0.0
   9.5.0
   9.4.0
@@ -65,4 +71,8 @@ expected to be backported to earlier versions.
   3.0.0
   2.8.0
   2.7.0
+  2.6.0
+  2.5.2
+  2.3.2
+  2.3.1
   versioning
diff --git a/docs/releasenotes/template.rst b/docs/releasenotes/template.rst
index 440d04b1c..cfc7221a3 100644
--- a/docs/releasenotes/template.rst
+++ b/docs/releasenotes/template.rst
@@ -1,6 +1,19 @@
 xx.y.z
 ------
 
+Security
+========
+
+TODO
+^^^^
+
+TODO
+
+:cve:`YYYY-XXXXX`: TODO
+^^^^^^^^^^^^^^^^^^^^^^^
+
+TODO
+
 Backwards Incompatible Changes
 ==============================
 
@@ -31,14 +44,6 @@ TODO
 
 TODO
 
-Security
-========
-
-TODO
-^^^^
-
-TODO
-
 Other Changes
 =============
 
diff --git a/docs/resources/js/activate_tab.js b/docs/resources/js/activate_tab.js
new file mode 100644
index 000000000..92522b5ce
--- /dev/null
+++ b/docs/resources/js/activate_tab.js
@@ -0,0 +1,36 @@
+// Based on https://stackoverflow.com/a/38241481/724176
+function getOS() {
+  const userAgent = window.navigator.userAgent,
+    platform = window.navigator.userAgentData?.platform || window.navigator.platform,
+    macosPlatforms = ["macOS", "Macintosh", "MacIntel", "MacPPC", "Mac68K"],
+    windowsPlatforms = ["Win32", "Win64", "Windows", "WinCE"];
+
+  if (macosPlatforms.includes(platform)) {
+    return "macOS";
+  } else if (windowsPlatforms.includes(platform)) {
+    return "Windows";
+  } else if (/Android/.test(userAgent)) {
+    return "Android";
+  } else if (/Linux/.test(platform)) {
+    return "Linux";
+  }
+}
+
+function activateTab(tabName) {
+  // Find all label elements with the specified tab name
+  const labels = document.querySelectorAll(".tab-label");
+
+  labels.forEach((label) => {
+    if (label.textContent == tabName) {
+      // Find the associated input element using the "for" attribute
+      const tabInputId = label.getAttribute("for");
+      const tabInput = document.getElementById(tabInputId);
+
+      // Check if the input element exists before attempting to set the "checked" attribute
+      if (tabInput) {
+        // Activate the tab by setting its "checked" attribute to true
+        tabInput.checked = true;
+      }
+    }
+  });
+}
diff --git a/pyproject.toml b/pyproject.toml
index cf31b6407..1c7b2c4b2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,4 +1,176 @@
 [build-system]
-requires = ["setuptools >= 40.8.0", "wheel"]
 build-backend = "backend"
-backend-path = ["_custom_build"]
+requires = [
+  "setuptools>=67.8",
+]
+backend-path = [
+  "_custom_build",
+]
+
+[project]
+name = "pillow"
+description = "Python Imaging Library (Fork)"
+readme = "README.md"
+keywords = [
+  "Imaging",
+]
+license = { text = "MIT-CMU" }
+authors = [
+  { name = "Jeffrey A. Clark", email = "aclark@aclark.net" },
+]
+requires-python = ">=3.9"
+classifiers = [
+  "Development Status :: 6 - Mature",
+  "License :: OSI Approved :: CMU License (MIT-CMU)",
+  "Programming Language :: Python :: 3 :: Only",
+  "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: Implementation :: CPython",
+  "Programming Language :: Python :: Implementation :: PyPy",
+  "Topic :: Multimedia :: Graphics",
+  "Topic :: Multimedia :: Graphics :: Capture :: Digital Camera",
+  "Topic :: Multimedia :: Graphics :: Capture :: Screen Capture",
+  "Topic :: Multimedia :: Graphics :: Graphics Conversion",
+  "Topic :: Multimedia :: Graphics :: Viewers",
+  "Typing :: Typed",
+]
+dynamic = [
+  "version",
+]
+optional-dependencies.docs = [
+  "furo",
+  "olefile",
+  "sphinx>=8.1",
+  "sphinx-copybutton",
+  "sphinx-inline-tabs",
+  "sphinxext-opengraph",
+]
+optional-dependencies.fpx = [
+  "olefile",
+]
+optional-dependencies.mic = [
+  "olefile",
+]
+optional-dependencies.tests = [
+  "check-manifest",
+  "coverage>=7.4.2",
+  "defusedxml",
+  "markdown2",
+  "olefile",
+  "packaging",
+  "pyroma",
+  "pytest",
+  "pytest-cov",
+  "pytest-timeout",
+  "trove-classifiers>=2024.10.12",
+]
+optional-dependencies.typing = [
+  "typing-extensions; python_version<'3.10'",
+]
+optional-dependencies.xmp = [
+  "defusedxml",
+]
+urls.Changelog = "https://github.com/python-pillow/Pillow/releases"
+urls.Documentation = "https://pillow.readthedocs.io"
+urls.Funding = "https://tidelift.com/subscription/pkg/pypi-pillow?utm_source=pypi-pillow&utm_medium=pypi"
+urls.Homepage = "https://python-pillow.org"
+urls.Mastodon = "https://fosstodon.org/@pillow"
+urls."Release notes" = "https://pillow.readthedocs.io/en/stable/releasenotes/index.html"
+urls.Source = "https://github.com/python-pillow/Pillow"
+
+[tool.setuptools]
+packages = [
+  "PIL",
+]
+include-package-data = true
+package-dir = { "" = "src" }
+
+[tool.setuptools.dynamic]
+version = { attr = "PIL.__version__" }
+
+[tool.cibuildwheel]
+before-all = ".github/workflows/wheels-dependencies.sh"
+build-verbosity = 1
+
+config-settings = "raqm=enable raqm=vendor fribidi=vendor imagequant=disable"
+# Disable platform guessing on macOS
+macos.config-settings = "raqm=enable raqm=vendor fribidi=vendor imagequant=disable platform-guessing=disable"
+
+test-command = "cd {project} && .github/workflows/wheels-test.sh"
+test-extras = "tests"
+
+[tool.cibuildwheel.macos.environment]
+PATH = "$(pwd)/build/deps/darwin/bin:$(dirname $(which python3)):/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin"
+
+[tool.black]
+exclude = "wheels/multibuild"
+
+[tool.ruff]
+exclude = [ "wheels/multibuild" ]
+
+fix = true
+lint.select = [
+  "C4",     # flake8-comprehensions
+  "E",      # pycodestyle errors
+  "EM",     # flake8-errmsg
+  "F",      # pyflakes errors
+  "I",      # isort
+  "ISC",    # flake8-implicit-str-concat
+  "LOG",    # flake8-logging
+  "PGH",    # pygrep-hooks
+  "PT",     # flake8-pytest-style
+  "PYI",    # flake8-pyi
+  "RUF100", # unused noqa (yesqa)
+  "UP",     # pyupgrade
+  "W",      # pycodestyle warnings
+  "YTT",    # flake8-2020
+]
+lint.ignore = [
+  "E203",   # Whitespace before ':'
+  "E221",   # Multiple spaces before operator
+  "E226",   # Missing whitespace around arithmetic operator
+  "E241",   # Multiple spaces after ','
+  "PT001",  # pytest-fixture-incorrect-parentheses-style
+  "PT007",  # pytest-parametrize-values-wrong-type
+  "PT011",  # pytest-raises-too-broad
+  "PT012",  # pytest-raises-with-multiple-statements
+  "PT017",  # pytest-assert-in-except
+  "PYI026", # flake8-pyi: typing.TypeAlias added in Python 3.10
+  "PYI034", # flake8-pyi: typing.Self added in Python 3.11
+]
+lint.per-file-ignores."Tests/oss-fuzz/fuzz_font.py" = [
+  "I002",
+]
+lint.per-file-ignores."Tests/oss-fuzz/fuzz_pillow.py" = [
+  "I002",
+]
+lint.flake8-pytest-style.parametrize-names-type = "csv"
+lint.isort.known-first-party = [
+  "PIL",
+]
+lint.isort.required-imports = [
+  "from __future__ import annotations",
+]
+
+[tool.pyproject-fmt]
+max_supported_python = "3.13"
+
+[tool.pytest.ini_options]
+addopts = "-ra --color=yes"
+testpaths = [
+  "Tests",
+]
+
+[tool.mypy]
+python_version = "3.9"
+pretty = true
+disallow_any_generics = true
+enable_error_code = "ignore-without-code"
+extra_checks = true
+follow_imports = "silent"
+warn_redundant_casts = true
+warn_unreachable = true
+warn_unused_ignores = true
diff --git a/selftest.py b/selftest.py
index 6eeadd1db..e9b5689a0 100755
--- a/selftest.py
+++ b/selftest.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 # minimal sanity check
+from __future__ import annotations
 
 import sys
 
@@ -14,7 +15,7 @@ except AttributeError:
     pass
 
 
-def testimage():
+def testimage() -> None:
     """
     PIL lets you create in-memory images with various pixel types:
 
@@ -51,7 +52,7 @@ def testimage():
     or you call the "load" method:
 
     >>> im = Image.open("Tests/images/hopper.ppm")
-    >>> print(im.im) # internal image attribute
+    >>> print(im._im) # internal image attribute
     None
     >>> a = im.load()
     >>> type(im.im) # doctest: +ELLIPSIS
@@ -138,7 +139,9 @@ def testimage():
     In 1.1.6, you can use the ImageMath module to do image
     calculations.
 
-    >>> im = ImageMath.eval("float(im + 20)", im=im.convert("L"))
+    >>> im = ImageMath.lambda_eval( \
+      lambda args: args["float"](args["im"] + 20), im=im.convert("L") \
+    )
     >>> im.mode, im.size
     ('F', (128, 128))
 
@@ -162,9 +165,9 @@ if __name__ == "__main__":
     print("Running selftest:")
     status = doctest.testmod(sys.modules[__name__])
     if status[0]:
-        print("*** %s tests of %d failed." % status)
+        print(f"*** {status[0]} tests of {status[1]} failed.")
         exit_status = 1
     else:
-        print("--- %s tests passed." % status[1])
+        print(f"--- {status[1]} tests passed.")
 
     sys.exit(exit_status)
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 06e95d7cc..000000000
--- a/setup.cfg
+++ /dev/null
@@ -1,73 +0,0 @@
-[metadata]
-name = Pillow
-description = Python Imaging Library (Fork)
-long_description = file: README.md
-long_description_content_type = text/markdown
-url = https://python-pillow.org
-author = Jeffrey A. Clark (Alex)
-author_email = aclark@aclark.net
-license = HPND
-classifiers =
-    Development Status :: 6 - Mature
-    License :: OSI Approved :: Historical Permission Notice and Disclaimer (HPND)
-    Programming Language :: Python :: 3
-    Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.8
-    Programming Language :: Python :: 3.9
-    Programming Language :: Python :: 3.10
-    Programming Language :: Python :: 3.11
-    Programming Language :: Python :: Implementation :: CPython
-    Programming Language :: Python :: Implementation :: PyPy
-    Topic :: Multimedia :: Graphics
-    Topic :: Multimedia :: Graphics :: Capture :: Digital Camera
-    Topic :: Multimedia :: Graphics :: Capture :: Screen Capture
-    Topic :: Multimedia :: Graphics :: Graphics Conversion
-    Topic :: Multimedia :: Graphics :: Viewers
-keywords = Imaging
-project_urls =
-    Documentation=https://pillow.readthedocs.io
-    Source=https://github.com/python-pillow/Pillow
-    Funding=https://tidelift.com/subscription/pkg/pypi-pillow?utm_source=pypi-pillow&utm_medium=pypi
-    Release notes=https://pillow.readthedocs.io/en/stable/releasenotes/index.html
-    Changelog=https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst
-    Twitter=https://twitter.com/PythonPillow
-    Mastodon=https://fosstodon.org/@pillow
-
-[options]
-packages = PIL
-python_requires = >=3.8
-include_package_data = True
-package_dir =
-    = src
-
-[options.extras_require]
-docs =
-    furo
-    olefile
-    sphinx>=2.4
-    sphinx-copybutton
-    sphinx-inline-tabs
-    sphinx-removed-in
-    sphinxext-opengraph
-tests =
-    check-manifest
-    coverage
-    defusedxml
-    markdown2
-    olefile
-    packaging
-    pyroma
-    pytest
-    pytest-cov
-    pytest-timeout
-
-[flake8]
-extend-ignore = E203
-max-line-length = 88
-
-[isort]
-profile = black
-
-[tool:pytest]
-addopts = -ra --color=yes
-testpaths = Tests
diff --git a/setup.py b/setup.py
old mode 100755
new mode 100644
index b647944d3..fbd23a568
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 # > pyroma .
 # ------------------------------
 # Checking .
@@ -7,6 +6,7 @@
 # Final rating: 10/10
 # Your cheese is so fresh most people think it's a cream: Mascarpone
 # ------------------------------
+from __future__ import annotations
 
 import os
 import re
@@ -15,16 +15,20 @@ import struct
 import subprocess
 import sys
 import warnings
+from collections.abc import Iterator
+from typing import Any
 
 from setuptools import Extension, setup
 from setuptools.command.build_ext import build_ext
 
 
-def get_version():
+def get_version() -> str:
     version_file = "src/PIL/_version.py"
     with open(version_file, encoding="utf-8") as f:
-        exec(compile(f.read(), version_file, "exec"))
-    return locals()["__version__"]
+        return f.read().split('"')[1]
+
+
+configuration: dict[str, list[str]] = {}
 
 
 PILLOW_VERSION = get_version()
@@ -35,11 +39,13 @@ IMAGEQUANT_ROOT = None
 JPEG2K_ROOT = None
 JPEG_ROOT = None
 LCMS_ROOT = None
+RAQM_ROOT = None
 TIFF_ROOT = None
+WEBP_ROOT = None
 ZLIB_ROOT = None
 FUZZING_BUILD = "LIB_FUZZING_ENGINE" in os.environ
 
-if sys.platform == "win32" and sys.version_info >= (3, 12):
+if sys.platform == "win32" and sys.version_info >= (3, 14):
     import atexit
 
     atexit.register(
@@ -137,10 +143,9 @@ class RequiredDependencyException(Exception):
 
 
 PLATFORM_MINGW = os.name == "nt" and "GCC" in sys.version
-PLATFORM_PYPY = hasattr(sys, "pypy_version_info")
 
 
-def _dbg(s, tp=None):
+def _dbg(s: str, tp: Any = None) -> None:
     if DEBUG:
         if tp:
             print(s % tp)
@@ -148,18 +153,24 @@ def _dbg(s, tp=None):
         print(s)
 
 
-def _find_library_dirs_ldconfig():
+def _find_library_dirs_ldconfig() -> list[str]:
     # Based on ctypes.util from Python 2
 
     ldconfig = "ldconfig" if shutil.which("ldconfig") else "/sbin/ldconfig"
+    args: list[str]
+    env: dict[str, str]
+    expr: str
     if sys.platform.startswith("linux") or sys.platform.startswith("gnu"):
-        machine = os.uname()[4]
+        if struct.calcsize("l") == 4:
+            machine = os.uname()[4] + "-32"
+        else:
+            machine = os.uname()[4] + "-64"
         mach_map = {
-            "x86_64": "libc6,x86-64",
-            "ppc64": "libc6,64bit",
-            "sparc64": "libc6,64bit",
-            "s390x": "libc6,64bit",
-            "ia64": "libc6,IA-64",
+            "x86_64-64": "libc6,x86-64",
+            "ppc64-64": "libc6,64bit",
+            "sparc64-64": "libc6,64bit",
+            "s390x-64": "libc6,64bit",
+            "ia64-64": "libc6,IA-64",
         }
         abi_type = mach_map.get(machine, "libc6")
 
@@ -178,13 +189,11 @@ def _find_library_dirs_ldconfig():
 
     try:
         p = subprocess.Popen(
-            args, stderr=subprocess.DEVNULL, stdout=subprocess.PIPE, env=env
+            args, stderr=subprocess.DEVNULL, stdout=subprocess.PIPE, env=env, text=True
         )
     except OSError:  # E.g. command not found
         return []
-    [data, _] = p.communicate()
-    if isinstance(data, bytes):
-        data = data.decode("latin1")
+    data = p.communicate()[0]
 
     dirs = []
     for dll in re.findall(expr, data):
@@ -194,7 +203,9 @@ def _find_library_dirs_ldconfig():
     return dirs
 
 
-def _add_directory(path, subdir, where=None):
+def _add_directory(
+    path: list[str], subdir: str | None, where: int | None = None
+) -> None:
     if subdir is None:
         return
     subdir = os.path.realpath(subdir)
@@ -210,7 +221,7 @@ def _add_directory(path, subdir, where=None):
         path.insert(where, subdir)
 
 
-def _find_include_file(self, include):
+def _find_include_file(self: pil_build_ext, include: str) -> int:
     for directory in self.compiler.include_dirs:
         _dbg("Checking for include file %s in %s", (include, directory))
         if os.path.isfile(os.path.join(directory, include)):
@@ -219,7 +230,7 @@ def _find_include_file(self, include):
     return 0
 
 
-def _find_library_file(self, library):
+def _find_library_file(self: pil_build_ext, library: str) -> str | None:
     ret = self.compiler.find_library_file(self.compiler.library_dirs, library)
     if ret:
         _dbg("Found library %s at %s", (library, ret))
@@ -228,7 +239,7 @@ def _find_library_file(self, library):
     return ret
 
 
-def _find_include_dir(self, dirname, include):
+def _find_include_dir(self: pil_build_ext, dirname: str, include: str) -> bool | str:
     for directory in self.compiler.include_dirs:
         _dbg("Checking for include file %s in %s", (include, directory))
         if os.path.isfile(os.path.join(directory, include)):
@@ -239,6 +250,7 @@ def _find_include_dir(self, dirname, include):
         if os.path.isfile(os.path.join(subdir, include)):
             _dbg("Found %s in %s", (include, subdir))
             return subdir
+    return False
 
 
 def _cmd_exists(cmd: str) -> bool:
@@ -250,7 +262,7 @@ def _cmd_exists(cmd: str) -> bool:
     )
 
 
-def _pkg_config(name):
+def _pkg_config(name: str) -> tuple[list[str], list[str]] | None:
     command = os.environ.get("PKG_CONFIG", "pkg-config")
     for keep_system in (True, False):
         try:
@@ -277,10 +289,11 @@ def _pkg_config(name):
             return libs, cflags
         except Exception:
             pass
+    return None
 
 
 class pil_build_ext(build_ext):
-    class feature:
+    class ext_feature:
         features = [
             "zlib",
             "jpeg",
@@ -289,32 +302,38 @@ class pil_build_ext(build_ext):
             "raqm",
             "lcms",
             "webp",
-            "webpmux",
             "jpeg2000",
             "imagequant",
             "xcb",
         ]
 
         required = {"jpeg", "zlib"}
-        vendor = set()
+        vendor: set[str] = set()
 
-        def __init__(self):
+        def __init__(self) -> None:
+            self._settings: dict[str, str | bool | None] = {}
             for f in self.features:
-                setattr(self, f, None)
+                self.set(f, None)
 
-        def require(self, feat):
+        def require(self, feat: str) -> bool:
             return feat in self.required
 
-        def want(self, feat):
-            return getattr(self, feat) is None
+        def get(self, feat: str) -> str | bool | None:
+            return self._settings[feat]
 
-        def want_vendor(self, feat):
+        def set(self, feat: str, value: str | bool | None) -> None:
+            self._settings[feat] = value
+
+        def want(self, feat: str) -> bool:
+            return self._settings[feat] is None
+
+        def want_vendor(self, feat: str) -> bool:
             return feat in self.vendor
 
-        def __iter__(self):
+        def __iter__(self) -> Iterator[str]:
             yield from self.features
 
-    feature = feature()
+    feature = ext_feature()
 
     user_options = (
         build_ext.user_options
@@ -331,17 +350,26 @@ class pil_build_ext(build_ext):
         + [("add-imaging-libs=", None, "Add libs to _imaging build")]
     )
 
-    def initialize_options(self):
-        self.disable_platform_guessing = None
+    @staticmethod
+    def check_configuration(option: str, value: str) -> bool | None:
+        return True if value in configuration.get(option, []) else None
+
+    def initialize_options(self) -> None:
+        self.disable_platform_guessing = self.check_configuration(
+            "platform-guessing", "disable"
+        )
         self.add_imaging_libs = ""
         build_ext.initialize_options(self)
         for x in self.feature:
-            setattr(self, f"disable_{x}", None)
-            setattr(self, f"enable_{x}", None)
+            setattr(self, f"disable_{x}", self.check_configuration(x, "disable"))
+            setattr(self, f"enable_{x}", self.check_configuration(x, "enable"))
         for x in ("raqm", "fribidi"):
-            setattr(self, f"vendor_{x}", None)
+            setattr(self, f"vendor_{x}", self.check_configuration(x, "vendor"))
+        if self.check_configuration("debug", "true"):
+            self.debug = True
+        self.parallel = configuration.get("parallel", [None])[-1]
 
-    def finalize_options(self):
+    def finalize_options(self) -> None:
         build_ext.finalize_options(self)
         if self.debug:
             global DEBUG
@@ -349,15 +377,19 @@ class pil_build_ext(build_ext):
         if not self.parallel:
             # If --parallel (or -j) wasn't specified, we want to reproduce the same
             # behavior as before, that is, auto-detect the number of jobs.
-            try:
-                self.parallel = int(
-                    os.environ.get("MAX_CONCURRENCY", min(4, os.cpu_count()))
-                )
-            except TypeError:
-                self.parallel = None
+            self.parallel = None
+
+            cpu_count = os.cpu_count()
+            if cpu_count is not None:
+                try:
+                    self.parallel = int(
+                        os.environ.get("MAX_CONCURRENCY", min(4, cpu_count))
+                    )
+                except TypeError:
+                    pass
         for x in self.feature:
             if getattr(self, f"disable_{x}"):
-                setattr(self.feature, x, False)
+                self.feature.set(x, False)
                 self.feature.required.discard(x)
                 _dbg("Disabling %s", x)
                 if getattr(self, f"enable_{x}"):
@@ -388,7 +420,13 @@ class pil_build_ext(build_ext):
                 _dbg("Using vendored version of %s", x)
                 self.feature.vendor.add(x)
 
-    def _update_extension(self, name, libraries, define_macros=None, sources=None):
+    def _update_extension(
+        self,
+        name: str,
+        libraries: list[str] | list[str | bool | None],
+        define_macros: list[tuple[str, str | None]] | None = None,
+        sources: list[str] | None = None,
+    ) -> None:
         for extension in self.extensions:
             if extension.name == name:
                 extension.libraries += libraries
@@ -401,16 +439,16 @@ class pil_build_ext(build_ext):
                     extension.extra_link_args = ["--stdlib=libc++"]
                 break
 
-    def _remove_extension(self, name):
+    def _remove_extension(self, name: str) -> None:
         for extension in self.extensions:
             if extension.name == name:
                 self.extensions.remove(extension)
                 break
 
-    def get_macos_sdk_path(self):
+    def get_macos_sdk_path(self) -> str | None:
         try:
             sdk_path = (
-                subprocess.check_output(["xcrun", "--show-sdk-path"])
+                subprocess.check_output(["xcrun", "--show-sdk-path", "--sdk", "macosx"])
                 .strip()
                 .decode("latin1")
             )
@@ -428,9 +466,9 @@ class pil_build_ext(build_ext):
                 sdk_path = commandlinetools_sdk_path
         return sdk_path
 
-    def build_extensions(self):
-        library_dirs = []
-        include_dirs = []
+    def build_extensions(self) -> None:
+        library_dirs: list[str] = []
+        include_dirs: list[str] = []
 
         pkg_config = None
         if _cmd_exists(os.environ.get("PKG_CONFIG", "pkg-config")):
@@ -438,33 +476,38 @@ class pil_build_ext(build_ext):
 
         #
         # add configured kits
-        for root_name, lib_name in dict(
-            JPEG_ROOT="libjpeg",
-            JPEG2K_ROOT="libopenjp2",
-            TIFF_ROOT=("libtiff-5", "libtiff-4"),
-            ZLIB_ROOT="zlib",
-            FREETYPE_ROOT="freetype2",
-            HARFBUZZ_ROOT="harfbuzz",
-            FRIBIDI_ROOT="fribidi",
-            LCMS_ROOT="lcms2",
-            IMAGEQUANT_ROOT="libimagequant",
-        ).items():
+        for root_name, lib_name in {
+            "JPEG_ROOT": "libjpeg",
+            "JPEG2K_ROOT": "libopenjp2",
+            "TIFF_ROOT": ("libtiff-5", "libtiff-4"),
+            "ZLIB_ROOT": "zlib",
+            "FREETYPE_ROOT": "freetype2",
+            "HARFBUZZ_ROOT": "harfbuzz",
+            "FRIBIDI_ROOT": "fribidi",
+            "RAQM_ROOT": "raqm",
+            "WEBP_ROOT": "libwebp",
+            "LCMS_ROOT": "lcms2",
+            "IMAGEQUANT_ROOT": "libimagequant",
+        }.items():
             root = globals()[root_name]
 
             if root is None and root_name in os.environ:
-                prefix = os.environ[root_name]
-                root = (os.path.join(prefix, "lib"), os.path.join(prefix, "include"))
+                root_prefix = os.environ[root_name]
+                root = (
+                    os.path.join(root_prefix, "lib"),
+                    os.path.join(root_prefix, "include"),
+                )
 
             if root is None and pkg_config:
-                if isinstance(lib_name, tuple):
+                if isinstance(lib_name, str):
+                    _dbg(f"Looking for `{lib_name}` using pkg-config.")
+                    root = pkg_config(lib_name)
+                else:
                     for lib_name2 in lib_name:
                         _dbg(f"Looking for `{lib_name2}` using pkg-config.")
                         root = pkg_config(lib_name2)
                         if root:
                             break
-                else:
-                    _dbg(f"Looking for `{lib_name}` using pkg-config.")
-                    root = pkg_config(lib_name)
 
             if isinstance(root, tuple):
                 lib_root, include_root = root
@@ -563,10 +606,14 @@ class pil_build_ext(build_ext):
                 _add_directory(library_dirs, "/usr/X11/lib")
                 _add_directory(include_dirs, "/usr/X11/include")
 
+            # Add the macOS SDK path.
             sdk_path = self.get_macos_sdk_path()
             if sdk_path:
                 _add_directory(library_dirs, os.path.join(sdk_path, "usr", "lib"))
                 _add_directory(include_dirs, os.path.join(sdk_path, "usr", "include"))
+
+                for extension in self.extensions:
+                    extension.extra_compile_args = ["-Wno-nullability-completeness"]
         elif (
             sys.platform.startswith("linux")
             or sys.platform.startswith("gnu")
@@ -581,7 +628,10 @@ class pil_build_ext(build_ext):
                 # user libs are at $PREFIX/lib
                 _add_directory(
                     library_dirs,
-                    os.path.join(os.environ["ANDROID_ROOT"], "lib64"),
+                    os.path.join(
+                        os.environ["ANDROID_ROOT"],
+                        "lib" if struct.calcsize("l") == 4 else "lib64",
+                    ),
                 )
 
         elif sys.platform.startswith("netbsd"):
@@ -638,22 +688,24 @@ class pil_build_ext(build_ext):
             _dbg("Looking for zlib")
             if _find_include_file(self, "zlib.h"):
                 if _find_library_file(self, "z"):
-                    feature.zlib = "z"
+                    feature.set("zlib", "z")
                 elif sys.platform == "win32" and _find_library_file(self, "zlib"):
-                    feature.zlib = "zlib"  # alternative name
+                    feature.set("zlib", "zlib")  # alternative name
+                elif sys.platform == "win32" and _find_library_file(self, "zdll"):
+                    feature.set("zlib", "zdll")  # dll import library
 
         if feature.want("jpeg"):
             _dbg("Looking for jpeg")
             if _find_include_file(self, "jpeglib.h"):
                 if _find_library_file(self, "jpeg"):
-                    feature.jpeg = "jpeg"
+                    feature.set("jpeg", "jpeg")
                 elif sys.platform == "win32" and _find_library_file(self, "libjpeg"):
-                    feature.jpeg = "libjpeg"  # alternative name
+                    feature.set("jpeg", "libjpeg")  # alternative name
 
-        feature.openjpeg_version = None
+        feature.set("openjpeg_version", None)
         if feature.want("jpeg2000"):
             _dbg("Looking for jpeg2000")
-            best_version = None
+            best_version: tuple[int, ...] | None = None
             best_path = None
 
             # Find the best version
@@ -683,26 +735,26 @@ class pil_build_ext(build_ext):
                 # <openjpeg.h> rather than having to cope with the versioned
                 # include path
                 _add_directory(self.compiler.include_dirs, best_path, 0)
-                feature.jpeg2000 = "openjp2"
-                feature.openjpeg_version = ".".join(str(x) for x in best_version)
+                feature.set("jpeg2000", "openjp2")
+                feature.set("openjpeg_version", ".".join(str(x) for x in best_version))
 
         if feature.want("imagequant"):
             _dbg("Looking for imagequant")
             if _find_include_file(self, "libimagequant.h"):
                 if _find_library_file(self, "imagequant"):
-                    feature.imagequant = "imagequant"
+                    feature.set("imagequant", "imagequant")
                 elif _find_library_file(self, "libimagequant"):
-                    feature.imagequant = "libimagequant"
+                    feature.set("imagequant", "libimagequant")
 
         if feature.want("tiff"):
             _dbg("Looking for tiff")
             if _find_include_file(self, "tiff.h"):
                 if _find_library_file(self, "tiff"):
-                    feature.tiff = "tiff"
+                    feature.set("tiff", "tiff")
                 if sys.platform in ["win32", "darwin"] and _find_library_file(
                     self, "libtiff"
                 ):
-                    feature.tiff = "libtiff"
+                    feature.set("tiff", "libtiff")
 
         if feature.want("freetype"):
             _dbg("Looking for freetype")
@@ -723,31 +775,31 @@ class pil_build_ext(build_ext):
                         freetype_version = 21
                         break
                 if freetype_version:
-                    feature.freetype = "freetype"
+                    feature.set("freetype", "freetype")
                     if subdir:
                         _add_directory(self.compiler.include_dirs, subdir, 0)
 
-        if feature.freetype and feature.want("raqm"):
+        if feature.get("freetype") and feature.want("raqm"):
             if not feature.want_vendor("raqm"):  # want system Raqm
                 _dbg("Looking for Raqm")
                 if _find_include_file(self, "raqm.h"):
                     if _find_library_file(self, "raqm"):
-                        feature.raqm = "raqm"
+                        feature.set("raqm", "raqm")
                     elif _find_library_file(self, "libraqm"):
-                        feature.raqm = "libraqm"
+                        feature.set("raqm", "libraqm")
             else:  # want to build Raqm from src/thirdparty
                 _dbg("Looking for HarfBuzz")
-                feature.harfbuzz = None
+                feature.set("harfbuzz", None)
                 hb_dir = _find_include_dir(self, "harfbuzz", "hb.h")
                 if hb_dir:
                     if isinstance(hb_dir, str):
                         _add_directory(self.compiler.include_dirs, hb_dir, 0)
                     if _find_library_file(self, "harfbuzz"):
-                        feature.harfbuzz = "harfbuzz"
-                if feature.harfbuzz:
+                        feature.set("harfbuzz", "harfbuzz")
+                if feature.get("harfbuzz"):
                     if not feature.want_vendor("fribidi"):  # want system FriBiDi
                         _dbg("Looking for FriBiDi")
-                        feature.fribidi = None
+                        feature.set("fribidi", None)
                         fribidi_dir = _find_include_dir(self, "fribidi", "fribidi.h")
                         if fribidi_dir:
                             if isinstance(fribidi_dir, str):
@@ -755,53 +807,43 @@ class pil_build_ext(build_ext):
                                     self.compiler.include_dirs, fribidi_dir, 0
                                 )
                             if _find_library_file(self, "fribidi"):
-                                feature.fribidi = "fribidi"
-                                feature.raqm = True
+                                feature.set("fribidi", "fribidi")
+                                feature.set("raqm", True)
                     else:  # want to build FriBiDi shim from src/thirdparty
-                        feature.raqm = True
+                        feature.set("raqm", True)
 
         if feature.want("lcms"):
             _dbg("Looking for lcms")
             if _find_include_file(self, "lcms2.h"):
                 if _find_library_file(self, "lcms2"):
-                    feature.lcms = "lcms2"
+                    feature.set("lcms", "lcms2")
                 elif _find_library_file(self, "lcms2_static"):
                     # alternate Windows name.
-                    feature.lcms = "lcms2_static"
+                    feature.set("lcms", "lcms2_static")
 
         if feature.want("webp"):
             _dbg("Looking for webp")
-            if _find_include_file(self, "webp/encode.h") and _find_include_file(
-                self, "webp/decode.h"
+            if all(
+                _find_include_file(self, "webp/" + include)
+                for include in ("encode.h", "decode.h", "mux.h", "demux.h")
             ):
-                # In Google's precompiled zip it is call "libwebp":
-                if _find_library_file(self, "webp"):
-                    feature.webp = "webp"
-                elif _find_library_file(self, "libwebp"):
-                    feature.webp = "libwebp"
-
-        if feature.want("webpmux"):
-            _dbg("Looking for webpmux")
-            if _find_include_file(self, "webp/mux.h") and _find_include_file(
-                self, "webp/demux.h"
-            ):
-                if _find_library_file(self, "webpmux") and _find_library_file(
-                    self, "webpdemux"
-                ):
-                    feature.webpmux = "webpmux"
-                if _find_library_file(self, "libwebpmux") and _find_library_file(
-                    self, "libwebpdemux"
-                ):
-                    feature.webpmux = "libwebpmux"
+                # In Google's precompiled zip it is called "libwebp"
+                for prefix in ("", "lib"):
+                    if all(
+                        _find_library_file(self, prefix + library)
+                        for library in ("webp", "webpmux", "webpdemux")
+                    ):
+                        feature.set("webp", prefix + "webp")
+                        break
 
         if feature.want("xcb"):
             _dbg("Looking for xcb")
             if _find_include_file(self, "xcb/xcb.h"):
                 if _find_library_file(self, "xcb"):
-                    feature.xcb = "xcb"
+                    feature.set("xcb", "xcb")
 
         for f in feature:
-            if not getattr(feature, f) and feature.require(f):
+            if not feature.get(f) and feature.require(f):
                 if f in ("jpeg", "zlib"):
                     raise RequiredDependencyException(f)
                 raise DependencyException(f)
@@ -809,24 +851,11 @@ class pil_build_ext(build_ext):
         #
         # core library
 
-        libs = self.add_imaging_libs.split()
-        defs = []
-        if feature.jpeg:
-            libs.append(feature.jpeg)
-            defs.append(("HAVE_LIBJPEG", None))
-        if feature.jpeg2000:
-            libs.append(feature.jpeg2000)
-            defs.append(("HAVE_OPENJPEG", None))
-            if sys.platform == "win32" and not PLATFORM_MINGW:
-                defs.append(("OPJ_STATIC", None))
-        if feature.zlib:
-            libs.append(feature.zlib)
-            defs.append(("HAVE_LIBZ", None))
-        if feature.imagequant:
-            libs.append(feature.imagequant)
-            defs.append(("HAVE_LIBIMAGEQUANT", None))
-        if feature.tiff:
-            libs.append(feature.tiff)
+        libs: list[str | bool | None] = []
+        libs.extend(self.add_imaging_libs.split())
+        defs: list[tuple[str, str | None]] = []
+        if feature.get("tiff"):
+            libs.append(feature.get("tiff"))
             defs.append(("HAVE_LIBTIFF", None))
             if sys.platform == "win32":
                 # This define needs to be defined if-and-only-if it was defined
@@ -834,44 +863,51 @@ class pil_build_ext(build_ext):
                 # so we have to guess; by default it is defined in all Windows builds.
                 # See #4237, #5243, #5359 for more information.
                 defs.append(("USE_WIN32_FILEIO", None))
-        if feature.xcb:
-            libs.append(feature.xcb)
+        if feature.get("jpeg"):
+            libs.append(feature.get("jpeg"))
+            defs.append(("HAVE_LIBJPEG", None))
+        if feature.get("jpeg2000"):
+            libs.append(feature.get("jpeg2000"))
+            defs.append(("HAVE_OPENJPEG", None))
+            if sys.platform == "win32" and not PLATFORM_MINGW:
+                defs.append(("OPJ_STATIC", None))
+        if feature.get("zlib"):
+            libs.append(feature.get("zlib"))
+            defs.append(("HAVE_LIBZ", None))
+        if feature.get("imagequant"):
+            libs.append(feature.get("imagequant"))
+            defs.append(("HAVE_LIBIMAGEQUANT", None))
+        if feature.get("xcb"):
+            libs.append(feature.get("xcb"))
             defs.append(("HAVE_XCB", None))
         if sys.platform == "win32":
             libs.extend(["kernel32", "user32", "gdi32"])
         if struct.unpack("h", b"\0\1")[0] == 1:
             defs.append(("WORDS_BIGENDIAN", None))
 
-        if (
-            sys.platform == "win32"
-            and sys.version_info < (3, 9)
-            and not (PLATFORM_PYPY or PLATFORM_MINGW)
-        ):
-            defs.append(("PILLOW_VERSION", f'"\\"{PILLOW_VERSION}\\""'))
-        else:
-            defs.append(("PILLOW_VERSION", f'"{PILLOW_VERSION}"'))
+        defs.append(("PILLOW_VERSION", f'"{PILLOW_VERSION}"'))
 
         self._update_extension("PIL._imaging", libs, defs)
 
         #
         # additional libraries
 
-        if feature.freetype:
+        if feature.get("freetype"):
             srcs = []
             libs = ["freetype"]
             defs = []
-            if feature.raqm:
+            if feature.get("raqm"):
                 if not feature.want_vendor("raqm"):  # using system Raqm
                     defs.append(("HAVE_RAQM", None))
                     defs.append(("HAVE_RAQM_SYSTEM", None))
-                    libs.append(feature.raqm)
+                    libs.append(feature.get("raqm"))
                 else:  # building Raqm from src/thirdparty
                     defs.append(("HAVE_RAQM", None))
                     srcs.append("src/thirdparty/raqm/raqm.c")
-                    libs.append(feature.harfbuzz)
+                    libs.append(feature.get("harfbuzz"))
                     if not feature.want_vendor("fribidi"):  # using system FriBiDi
                         defs.append(("HAVE_FRIBIDI_SYSTEM", None))
-                        libs.append(feature.fribidi)
+                        libs.append(feature.get("fribidi"))
                     else:  # building FriBiDi shim from src/thirdparty
                         srcs.append("src/thirdparty/fribidi-shim/fribidi.c")
             self._update_extension("PIL._imagingft", libs, defs, srcs)
@@ -879,24 +915,18 @@ class pil_build_ext(build_ext):
         else:
             self._remove_extension("PIL._imagingft")
 
-        if feature.lcms:
-            extra = []
+        if feature.get("lcms"):
+            libs = [feature.get("lcms")]
             if sys.platform == "win32":
-                extra.extend(["user32", "gdi32"])
-            self._update_extension("PIL._imagingcms", [feature.lcms] + extra)
+                libs.extend(["user32", "gdi32"])
+            self._update_extension("PIL._imagingcms", libs)
         else:
             self._remove_extension("PIL._imagingcms")
 
-        if feature.webp:
-            libs = [feature.webp]
-            defs = []
-
-            if feature.webpmux:
-                defs.append(("HAVE_WEBPMUX", None))
-                libs.append(feature.webpmux)
-                libs.append(feature.webpmux.replace("pmux", "pdemux"))
-
-            self._update_extension("PIL._webp", libs, defs)
+        webp = feature.get("webp")
+        if isinstance(webp, str):
+            libs = [webp, webp + "mux", webp + "demux"]
+            self._update_extension("PIL._webp", libs)
         else:
             self._remove_extension("PIL._webp")
 
@@ -910,14 +940,14 @@ class pil_build_ext(build_ext):
 
         self.summary_report(feature)
 
-    def summary_report(self, feature):
+    def summary_report(self, feature: ext_feature) -> None:
         print("-" * 68)
         print("PIL SETUP SUMMARY")
         print("-" * 68)
         print(f"version      Pillow {PILLOW_VERSION}")
-        v = sys.version.split("[")
-        print(f"platform     {sys.platform} {v[0].strip()}")
-        for v in v[1:]:
+        version = sys.version.split("[")
+        print(f"platform     {sys.platform} {version[0].strip()}")
+        for v in version[1:]:
             print(f"             [{v.strip()}")
         print("-" * 68)
 
@@ -928,17 +958,20 @@ class pil_build_ext(build_ext):
                 raqm_extra_info += ", FriBiDi shim"
 
         options = [
-            (feature.jpeg, "JPEG"),
-            (feature.jpeg2000, "OPENJPEG (JPEG2000)", feature.openjpeg_version),
-            (feature.zlib, "ZLIB (PNG/ZIP)"),
-            (feature.imagequant, "LIBIMAGEQUANT"),
-            (feature.tiff, "LIBTIFF"),
-            (feature.freetype, "FREETYPE2"),
-            (feature.raqm, "RAQM (Text shaping)", raqm_extra_info),
-            (feature.lcms, "LITTLECMS2"),
-            (feature.webp, "WEBP"),
-            (feature.webpmux, "WEBPMUX"),
-            (feature.xcb, "XCB (X protocol)"),
+            (feature.get("jpeg"), "JPEG"),
+            (
+                feature.get("jpeg2000"),
+                "OPENJPEG (JPEG2000)",
+                feature.get("openjpeg_version"),
+            ),
+            (feature.get("zlib"), "ZLIB (PNG/ZIP)"),
+            (feature.get("imagequant"), "LIBIMAGEQUANT"),
+            (feature.get("tiff"), "LIBTIFF"),
+            (feature.get("freetype"), "FREETYPE2"),
+            (feature.get("raqm"), "RAQM (Text shaping)", raqm_extra_info),
+            (feature.get("lcms"), "LITTLECMS2"),
+            (feature.get("webp"), "WEBP"),
+            (feature.get("xcb"), "XCB (X protocol)"),
         ]
 
         all = 1
@@ -967,11 +1000,11 @@ class pil_build_ext(build_ext):
         print("")
 
 
-def debug_build():
+def debug_build() -> bool:
     return hasattr(sys, "gettotalrefcount") or FUZZING_BUILD
 
 
-files = ["src/_imaging.c"]
+files: list[str | os.PathLike[str]] = ["src/_imaging.c"]
 for src_file in _IMAGING:
     files.append("src/" + src_file + ".c")
 for src_file in _LIB_IMAGING:
@@ -986,9 +1019,14 @@ ext_modules = [
     Extension("PIL._imagingmorph", ["src/_imagingmorph.c"]),
 ]
 
+
+# parse configuration from _custom_build/backend.py
+while sys.argv[-1].startswith("--pillow-configuration="):
+    _, key, value = sys.argv.pop().split("=", 2)
+    configuration.setdefault(key, []).append(value)
+
 try:
     setup(
-        version=PILLOW_VERSION,
         cmdclass={"build_ext": pil_build_ext},
         ext_modules=ext_modules,
         zip_safe=not (debug_build() or PLATFORM_MINGW),
@@ -1000,7 +1038,7 @@ The headers or library files could not be found for {str(err)},
 a required dependency when compiling Pillow from source.
 
 Please see the install instructions at:
-   https://pillow.readthedocs.io/en/latest/installation.html
+   https://pillow.readthedocs.io/en/latest/installation/basic-installation.html
 
 """
     sys.stderr.write(msg)
diff --git a/src/PIL/BdfFontFile.py b/src/PIL/BdfFontFile.py
index 075d46290..bc1416c74 100644
--- a/src/PIL/BdfFontFile.py
+++ b/src/PIL/BdfFontFile.py
@@ -20,7 +20,9 @@
 """
 Parse X Bitmap Distribution Format (BDF)
 """
+from __future__ import annotations
 
+from typing import BinaryIO
 
 from . import FontFile, Image
 
@@ -36,7 +38,17 @@ bdf_slant = {
 bdf_spacing = {"P": "Proportional", "M": "Monospaced", "C": "Cell"}
 
 
-def bdf_char(f):
+def bdf_char(
+    f: BinaryIO,
+) -> (
+    tuple[
+        str,
+        int,
+        tuple[tuple[int, int], tuple[int, int, int, int], tuple[int, int, int, int]],
+        Image.Image,
+    ]
+    | None
+):
     # skip to STARTCHAR
     while True:
         s = f.readline()
@@ -56,23 +68,22 @@ def bdf_char(f):
         props[s[:i].decode("ascii")] = s[i + 1 : -1].decode("ascii")
 
     # load bitmap
-    bitmap = []
+    bitmap = bytearray()
     while True:
         s = f.readline()
         if not s or s[:7] == b"ENDCHAR":
             break
-        bitmap.append(s[:-1])
-    bitmap = b"".join(bitmap)
+        bitmap += s[:-1]
 
     # The word BBX
     # followed by the width in x (BBw), height in y (BBh),
     # and x and y displacement (BBxoff0, BByoff0)
     # of the lower left corner from the origin of the character.
-    width, height, x_disp, y_disp = [int(p) for p in props["BBX"].split()]
+    width, height, x_disp, y_disp = (int(p) for p in props["BBX"].split())
 
     # The word DWIDTH
     # followed by the width in x and y of the character in device pixels.
-    dwx, dwy = [int(p) for p in props["DWIDTH"].split()]
+    dwx, dwy = (int(p) for p in props["DWIDTH"].split())
 
     bbox = (
         (dwx, dwy),
@@ -92,7 +103,7 @@ def bdf_char(f):
 class BdfFontFile(FontFile.FontFile):
     """Font file plugin for the X11 BDF format."""
 
-    def __init__(self, fp):
+    def __init__(self, fp: BinaryIO) -> None:
         super().__init__()
 
         s = fp.readline()
diff --git a/src/PIL/BlpImagePlugin.py b/src/PIL/BlpImagePlugin.py
index 0ca60ff24..e5605635e 100644
--- a/src/PIL/BlpImagePlugin.py
+++ b/src/PIL/BlpImagePlugin.py
@@ -29,10 +29,14 @@ BLP files come in many different flavours:
   - DXT5 compression is used if alpha_encoding == 7.
 """
 
+from __future__ import annotations
+
+import abc
 import os
 import struct
 from enum import IntEnum
 from io import BytesIO
+from typing import IO
 
 from . import Image, ImageFile
 
@@ -53,11 +57,13 @@ class AlphaEncoding(IntEnum):
     DXT5 = 7
 
 
-def unpack_565(i):
+def unpack_565(i: int) -> tuple[int, int, int]:
     return ((i >> 11) & 0x1F) << 3, ((i >> 5) & 0x3F) << 2, (i & 0x1F) << 3
 
 
-def decode_dxt1(data, alpha=False):
+def decode_dxt1(
+    data: bytes, alpha: bool = False
+) -> tuple[bytearray, bytearray, bytearray, bytearray]:
     """
     input: one "row" of data (i.e. will produce 4*width pixels)
     """
@@ -65,9 +71,9 @@ def decode_dxt1(data, alpha=False):
     blocks = len(data) // 8  # number of blocks in row
     ret = (bytearray(), bytearray(), bytearray(), bytearray())
 
-    for block in range(blocks):
+    for block_index in range(blocks):
         # Decode next 8-byte block.
-        idx = block * 8
+        idx = block_index * 8
         color0, color1, bits = struct.unpack_from("<HHI", data, idx)
 
         r0, g0, b0 = unpack_565(color0)
@@ -112,7 +118,7 @@ def decode_dxt1(data, alpha=False):
     return ret
 
 
-def decode_dxt3(data):
+def decode_dxt3(data: bytes) -> tuple[bytearray, bytearray, bytearray, bytearray]:
     """
     input: one "row" of data (i.e. will produce 4*width pixels)
     """
@@ -120,8 +126,8 @@ def decode_dxt3(data):
     blocks = len(data) // 16  # number of blocks in row
     ret = (bytearray(), bytearray(), bytearray(), bytearray())
 
-    for block in range(blocks):
-        idx = block * 16
+    for block_index in range(blocks):
+        idx = block_index * 16
         block = data[idx : idx + 16]
         # Decode next 16-byte block.
         bits = struct.unpack_from("<8B", block)
@@ -165,7 +171,7 @@ def decode_dxt3(data):
     return ret
 
 
-def decode_dxt5(data):
+def decode_dxt5(data: bytes) -> tuple[bytearray, bytearray, bytearray, bytearray]:
     """
     input: one "row" of data (i.e. will produce 4 * width pixels)
     """
@@ -173,8 +179,8 @@ def decode_dxt5(data):
     blocks = len(data) // 16  # number of blocks in row
     ret = (bytearray(), bytearray(), bytearray(), bytearray())
 
-    for block in range(blocks):
-        idx = block * 16
+    for block_index in range(blocks):
+        idx = block_index * 16
         block = data[idx : idx + 16]
         # Decode next 16-byte block.
         a0, a1 = struct.unpack_from("<BB", block)
@@ -239,7 +245,7 @@ class BLPFormatError(NotImplementedError):
     pass
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] in (b"BLP1", b"BLP2")
 
 
@@ -251,7 +257,7 @@ class BlpImageFile(ImageFile.ImageFile):
     format = "BLP"
     format_description = "Blizzard Mipmap Format"
 
-    def _open(self):
+    def _open(self) -> None:
         self.magic = self.fp.read(4)
 
         self.fp.seek(5, os.SEEK_CUR)
@@ -266,14 +272,14 @@ class BlpImageFile(ImageFile.ImageFile):
             msg = f"Bad BLP magic {repr(self.magic)}"
             raise BLPFormatError(msg)
 
-        self.mode = "RGBA" if self._blp_alpha_depth else "RGB"
-        self.tile = [(decoder, (0, 0) + self.size, 0, (self.mode, 0, 1))]
+        self._mode = "RGBA" if self._blp_alpha_depth else "RGB"
+        self.tile = [ImageFile._Tile(decoder, (0, 0) + self.size, 0, (self.mode, 0, 1))]
 
 
 class _BLPBaseDecoder(ImageFile.PyDecoder):
     _pulls_fd = True
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
         try:
             self._read_blp_header()
             self._load()
@@ -282,7 +288,12 @@ class _BLPBaseDecoder(ImageFile.PyDecoder):
             raise OSError(msg) from e
         return -1, 0
 
-    def _read_blp_header(self):
+    @abc.abstractmethod
+    def _load(self) -> None:
+        pass
+
+    def _read_blp_header(self) -> None:
+        assert self.fd is not None
         self.fd.seek(4)
         (self._blp_compression,) = struct.unpack("<i", self._safe_read(4))
 
@@ -301,10 +312,11 @@ class _BLPBaseDecoder(ImageFile.PyDecoder):
         self._blp_offsets = struct.unpack("<16I", self._safe_read(16 * 4))
         self._blp_lengths = struct.unpack("<16I", self._safe_read(16 * 4))
 
-    def _safe_read(self, length):
+    def _safe_read(self, length: int) -> bytes:
+        assert self.fd is not None
         return ImageFile._safe_read(self.fd, length)
 
-    def _read_palette(self):
+    def _read_palette(self) -> list[tuple[int, int, int, int]]:
         ret = []
         for i in range(256):
             try:
@@ -314,7 +326,7 @@ class _BLPBaseDecoder(ImageFile.PyDecoder):
             ret.append((b, g, r, a))
         return ret
 
-    def _read_bgra(self, palette):
+    def _read_bgra(self, palette: list[tuple[int, int, int, int]]) -> bytearray:
         data = bytearray()
         _data = BytesIO(self._safe_read(self._blp_lengths[0]))
         while True:
@@ -323,7 +335,7 @@ class _BLPBaseDecoder(ImageFile.PyDecoder):
             except struct.error:
                 break
             b, g, r, a = palette[offset]
-            d = (r, g, b)
+            d: tuple[int, ...] = (r, g, b)
             if self._blp_alpha_depth:
                 d += (a,)
             data.extend(d)
@@ -331,7 +343,7 @@ class _BLPBaseDecoder(ImageFile.PyDecoder):
 
 
 class BLP1Decoder(_BLPBaseDecoder):
-    def _load(self):
+    def _load(self) -> None:
         if self._blp_compression == Format.JPEG:
             self._decode_jpeg_stream()
 
@@ -339,7 +351,7 @@ class BLP1Decoder(_BLPBaseDecoder):
             if self._blp_encoding in (4, 5):
                 palette = self._read_palette()
                 data = self._read_bgra(palette)
-                self.set_as_raw(bytes(data))
+                self.set_as_raw(data)
             else:
                 msg = f"Unsupported BLP encoding {repr(self._blp_encoding)}"
                 raise BLPFormatError(msg)
@@ -347,29 +359,33 @@ class BLP1Decoder(_BLPBaseDecoder):
             msg = f"Unsupported BLP compression {repr(self._blp_encoding)}"
             raise BLPFormatError(msg)
 
-    def _decode_jpeg_stream(self):
+    def _decode_jpeg_stream(self) -> None:
         from .JpegImagePlugin import JpegImageFile
 
         (jpeg_header_size,) = struct.unpack("<I", self._safe_read(4))
         jpeg_header = self._safe_read(jpeg_header_size)
+        assert self.fd is not None
         self._safe_read(self._blp_offsets[0] - self.fd.tell())  # What IS this?
         data = self._safe_read(self._blp_lengths[0])
         data = jpeg_header + data
-        data = BytesIO(data)
-        image = JpegImageFile(data)
+        image = JpegImageFile(BytesIO(data))
         Image._decompression_bomb_check(image.size)
         if image.mode == "CMYK":
             decoder_name, extents, offset, args = image.tile[0]
-            image.tile = [(decoder_name, extents, offset, (args[0], "CMYK"))]
+            assert isinstance(args, tuple)
+            image.tile = [
+                ImageFile._Tile(decoder_name, extents, offset, (args[0], "CMYK"))
+            ]
         r, g, b = image.convert("RGB").split()
-        image = Image.merge("RGB", (b, g, r))
-        self.set_as_raw(image.tobytes())
+        reversed_image = Image.merge("RGB", (b, g, r))
+        self.set_as_raw(reversed_image.tobytes())
 
 
 class BLP2Decoder(_BLPBaseDecoder):
-    def _load(self):
+    def _load(self) -> None:
         palette = self._read_palette()
 
+        assert self.fd is not None
         self.fd.seek(self._blp_offsets[0])
 
         if self._blp_compression == 1:
@@ -410,26 +426,30 @@ class BLP2Decoder(_BLPBaseDecoder):
             msg = f"Unknown BLP compression {repr(self._blp_compression)}"
             raise BLPFormatError(msg)
 
-        self.set_as_raw(bytes(data))
+        self.set_as_raw(data)
 
 
 class BLPEncoder(ImageFile.PyEncoder):
     _pushes_fd = True
 
-    def _write_palette(self):
+    def _write_palette(self) -> bytes:
         data = b""
+        assert self.im is not None
         palette = self.im.getpalette("RGBA", "RGBA")
-        for i in range(256):
+        for i in range(len(palette) // 4):
             r, g, b, a = palette[i * 4 : (i + 1) * 4]
             data += struct.pack("<4B", b, g, r, a)
+        while len(data) < 256 * 4:
+            data += b"\x00" * 4
         return data
 
-    def encode(self, bufsize):
+    def encode(self, bufsize: int) -> tuple[int, int, bytes]:
         palette_data = self._write_palette()
 
         offset = 20 + 16 * 4 * 2 + len(palette_data)
         data = struct.pack("<16I", offset, *((0,) * 15))
 
+        assert self.im is not None
         w, h = self.im.size
         data += struct.pack("<16I", w * h, *((0,) * 15))
 
@@ -442,7 +462,7 @@ class BLPEncoder(ImageFile.PyEncoder):
         return len(data), 0, data
 
 
-def _save(im, fp, filename, save_all=False):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if im.mode != "P":
         msg = "Unsupported BLP image mode"
         raise ValueError(msg)
@@ -450,6 +470,7 @@ def _save(im, fp, filename, save_all=False):
     magic = b"BLP1" if im.encoderinfo.get("blp_version") == "BLP1" else b"BLP2"
     fp.write(magic)
 
+    assert im.palette is not None
     fp.write(struct.pack("<i", 1))  # Uncompressed or DirectX compression
     fp.write(struct.pack("<b", Encoding.UNCOMPRESSED))
     fp.write(struct.pack("<b", 1 if im.palette.mode == "RGBA" else 0))
@@ -460,7 +481,7 @@ def _save(im, fp, filename, save_all=False):
         fp.write(struct.pack("<i", 5))
         fp.write(struct.pack("<i", 0))
 
-    ImageFile._save(im, fp, [("BLP", (0, 0) + im.size, 0, im.mode)])
+    ImageFile._save(im, fp, [ImageFile._Tile("BLP", (0, 0) + im.size, 0, im.mode)])
 
 
 Image.register_open(BlpImageFile.format, BlpImageFile, _accept)
diff --git a/src/PIL/BmpImagePlugin.py b/src/PIL/BmpImagePlugin.py
index 5bda0a5b0..bf8f29577 100644
--- a/src/PIL/BmpImagePlugin.py
+++ b/src/PIL/BmpImagePlugin.py
@@ -22,9 +22,10 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 import os
+from typing import IO, Any
 
 from . import Image, ImageFile, ImagePalette
 from ._binary import i16le as i16
@@ -48,12 +49,12 @@ BIT2MODE = {
 }
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:2] == b"BM"
 
 
-def _dib_accept(prefix):
-    return i32(prefix) in [12, 40, 64, 108, 124]
+def _dib_accept(prefix: bytes) -> bool:
+    return i32(prefix) in [12, 40, 52, 56, 64, 108, 124]
 
 
 # =============================================================================
@@ -71,31 +72,41 @@ class BmpImageFile(ImageFile.ImageFile):
     for k, v in COMPRESSIONS.items():
         vars()[k] = v
 
-    def _bitmap(self, header=0, offset=0):
+    def _bitmap(self, header: int = 0, offset: int = 0) -> None:
         """Read relevant info about the BMP"""
         read, seek = self.fp.read, self.fp.seek
         if header:
             seek(header)
         # read bmp header size @offset 14 (this is part of the header size)
-        file_info = {"header_size": i32(read(4)), "direction": -1}
+        file_info: dict[str, bool | int | tuple[int, ...]] = {
+            "header_size": i32(read(4)),
+            "direction": -1,
+        }
 
         # -------------------- If requested, read header at a specific position
         # read the rest of the bmp header, without its size
+        assert isinstance(file_info["header_size"], int)
         header_data = ImageFile._safe_read(self.fp, file_info["header_size"] - 4)
 
-        # -------------------------------------------------- IBM OS/2 Bitmap v1
+        # ------------------------------- Windows Bitmap v2, IBM OS/2 Bitmap v1
         # ----- This format has different offsets because of width/height types
+        # 12: BITMAPCOREHEADER/OS21XBITMAPHEADER
         if file_info["header_size"] == 12:
             file_info["width"] = i16(header_data, 0)
             file_info["height"] = i16(header_data, 2)
             file_info["planes"] = i16(header_data, 4)
             file_info["bits"] = i16(header_data, 6)
-            file_info["compression"] = self.RAW
+            file_info["compression"] = self.COMPRESSIONS["RAW"]
             file_info["palette_padding"] = 3
 
-        # --------------------------------------------- Windows Bitmap v2 to v5
-        # v3, OS/2 v2, v4, v5
-        elif file_info["header_size"] in (40, 64, 108, 124):
+        # --------------------------------------------- Windows Bitmap v3 to v5
+        #  40: BITMAPINFOHEADER
+        #  52: BITMAPV2HEADER
+        #  56: BITMAPV3HEADER
+        #  64: BITMAPCOREHEADER2/OS22XBITMAPHEADER
+        # 108: BITMAPV4HEADER
+        # 124: BITMAPV5HEADER
+        elif file_info["header_size"] in (40, 52, 56, 64, 108, 124):
             file_info["y_flip"] = header_data[7] == 0xFF
             file_info["direction"] = 1 if file_info["y_flip"] else -1
             file_info["width"] = i32(header_data, 0)
@@ -115,12 +126,16 @@ class BmpImageFile(ImageFile.ImageFile):
             )
             file_info["colors"] = i32(header_data, 28)
             file_info["palette_padding"] = 4
+            assert isinstance(file_info["pixels_per_meter"], tuple)
             self.info["dpi"] = tuple(x / 39.3701 for x in file_info["pixels_per_meter"])
-            if file_info["compression"] == self.BITFIELDS:
-                if len(header_data) >= 52:
-                    for idx, mask in enumerate(
-                        ["r_mask", "g_mask", "b_mask", "a_mask"]
-                    ):
+            if file_info["compression"] == self.COMPRESSIONS["BITFIELDS"]:
+                masks = ["r_mask", "g_mask", "b_mask"]
+                if len(header_data) >= 48:
+                    if len(header_data) >= 52:
+                        masks.append("a_mask")
+                    else:
+                        file_info["a_mask"] = 0x0
+                    for idx, mask in enumerate(masks):
                         file_info[mask] = i32(header_data, 36 + idx * 4)
                 else:
                     # 40 byte headers only have the three components in the
@@ -132,8 +147,12 @@ class BmpImageFile(ImageFile.ImageFile):
                     # location, but it is listed as a reserved component,
                     # and it is not generally an alpha channel
                     file_info["a_mask"] = 0x0
-                    for mask in ["r_mask", "g_mask", "b_mask"]:
+                    for mask in masks:
                         file_info[mask] = i32(read(4))
+                assert isinstance(file_info["r_mask"], int)
+                assert isinstance(file_info["g_mask"], int)
+                assert isinstance(file_info["b_mask"], int)
+                assert isinstance(file_info["a_mask"], int)
                 file_info["rgb_mask"] = (
                     file_info["r_mask"],
                     file_info["g_mask"],
@@ -151,33 +170,39 @@ class BmpImageFile(ImageFile.ImageFile):
 
         # ------------------ Special case : header is reported 40, which
         # ---------------------- is shorter than real size for bpp >= 16
+        assert isinstance(file_info["width"], int)
+        assert isinstance(file_info["height"], int)
         self._size = file_info["width"], file_info["height"]
 
         # ------- If color count was not found in the header, compute from bits
+        assert isinstance(file_info["bits"], int)
         file_info["colors"] = (
             file_info["colors"]
             if file_info.get("colors", 0)
             else (1 << file_info["bits"])
         )
+        assert isinstance(file_info["colors"], int)
         if offset == 14 + file_info["header_size"] and file_info["bits"] <= 8:
             offset += 4 * file_info["colors"]
 
         # ---------------------- Check bit depth for unusual unsupported values
-        self.mode, raw_mode = BIT2MODE.get(file_info["bits"], (None, None))
-        if self.mode is None:
+        self._mode, raw_mode = BIT2MODE.get(file_info["bits"], ("", ""))
+        if not self.mode:
             msg = f"Unsupported BMP pixel depth ({file_info['bits']})"
             raise OSError(msg)
 
         # ---------------- Process BMP with Bitfields compression (not palette)
         decoder_name = "raw"
-        if file_info["compression"] == self.BITFIELDS:
-            SUPPORTED = {
+        if file_info["compression"] == self.COMPRESSIONS["BITFIELDS"]:
+            SUPPORTED: dict[int, list[tuple[int, ...]]] = {
                 32: [
                     (0xFF0000, 0xFF00, 0xFF, 0x0),
                     (0xFF000000, 0xFF0000, 0xFF00, 0x0),
+                    (0xFF000000, 0xFF00, 0xFF, 0x0),
                     (0xFF000000, 0xFF0000, 0xFF00, 0xFF),
                     (0xFF, 0xFF00, 0xFF0000, 0xFF000000),
                     (0xFF0000, 0xFF00, 0xFF, 0xFF000000),
+                    (0xFF000000, 0xFF00, 0xFF, 0xFF0000),
                     (0x0, 0x0, 0x0, 0x0),
                 ],
                 24: [(0xFF0000, 0xFF00, 0xFF)],
@@ -186,9 +211,11 @@ class BmpImageFile(ImageFile.ImageFile):
             MASK_MODES = {
                 (32, (0xFF0000, 0xFF00, 0xFF, 0x0)): "BGRX",
                 (32, (0xFF000000, 0xFF0000, 0xFF00, 0x0)): "XBGR",
+                (32, (0xFF000000, 0xFF00, 0xFF, 0x0)): "BGXR",
                 (32, (0xFF000000, 0xFF0000, 0xFF00, 0xFF)): "ABGR",
                 (32, (0xFF, 0xFF00, 0xFF0000, 0xFF000000)): "RGBA",
                 (32, (0xFF0000, 0xFF00, 0xFF, 0xFF000000)): "BGRA",
+                (32, (0xFF000000, 0xFF00, 0xFF, 0xFF0000)): "BGAR",
                 (32, (0x0, 0x0, 0x0, 0x0)): "BGRA",
                 (24, (0xFF0000, 0xFF00, 0xFF)): "BGR",
                 (16, (0xF800, 0x7E0, 0x1F)): "BGR;16",
@@ -199,12 +226,14 @@ class BmpImageFile(ImageFile.ImageFile):
                     file_info["bits"] == 32
                     and file_info["rgba_mask"] in SUPPORTED[file_info["bits"]]
                 ):
+                    assert isinstance(file_info["rgba_mask"], tuple)
                     raw_mode = MASK_MODES[(file_info["bits"], file_info["rgba_mask"])]
-                    self.mode = "RGBA" if "A" in raw_mode else self.mode
+                    self._mode = "RGBA" if "A" in raw_mode else self.mode
                 elif (
                     file_info["bits"] in (24, 16)
                     and file_info["rgb_mask"] in SUPPORTED[file_info["bits"]]
                 ):
+                    assert isinstance(file_info["rgb_mask"], tuple)
                     raw_mode = MASK_MODES[(file_info["bits"], file_info["rgb_mask"])]
                 else:
                     msg = "Unsupported BMP bitfields layout"
@@ -212,10 +241,13 @@ class BmpImageFile(ImageFile.ImageFile):
             else:
                 msg = "Unsupported BMP bitfields layout"
                 raise OSError(msg)
-        elif file_info["compression"] == self.RAW:
+        elif file_info["compression"] == self.COMPRESSIONS["RAW"]:
             if file_info["bits"] == 32 and header == 22:  # 32-bit .cur offset
-                raw_mode, self.mode = "BGRA", "RGBA"
-        elif file_info["compression"] in (self.RLE8, self.RLE4):
+                raw_mode, self._mode = "BGRA", "RGBA"
+        elif file_info["compression"] in (
+            self.COMPRESSIONS["RLE8"],
+            self.COMPRESSIONS["RLE4"],
+        ):
             decoder_name = "bmp_rle"
         else:
             msg = f"Unsupported BMP compression ({file_info['compression']})"
@@ -228,41 +260,43 @@ class BmpImageFile(ImageFile.ImageFile):
                 msg = f"Unsupported BMP Palette size ({file_info['colors']})"
                 raise OSError(msg)
             else:
+                assert isinstance(file_info["palette_padding"], int)
                 padding = file_info["palette_padding"]
                 palette = read(padding * file_info["colors"])
-                greyscale = True
+                grayscale = True
                 indices = (
                     (0, 255)
                     if file_info["colors"] == 2
                     else list(range(file_info["colors"]))
                 )
 
-                # ----------------- Check if greyscale and ignore palette if so
+                # ----------------- Check if grayscale and ignore palette if so
                 for ind, val in enumerate(indices):
                     rgb = palette[ind * padding : ind * padding + 3]
                     if rgb != o8(val) * 3:
-                        greyscale = False
+                        grayscale = False
 
-                # ------- If all colors are grey, white or black, ditch palette
-                if greyscale:
-                    self.mode = "1" if file_info["colors"] == 2 else "L"
+                # ------- If all colors are gray, white or black, ditch palette
+                if grayscale:
+                    self._mode = "1" if file_info["colors"] == 2 else "L"
                     raw_mode = self.mode
                 else:
-                    self.mode = "P"
+                    self._mode = "P"
                     self.palette = ImagePalette.raw(
                         "BGRX" if padding == 4 else "BGR", palette
                     )
 
         # ---------------------------- Finally set the tile data for the plugin
         self.info["compression"] = file_info["compression"]
-        args = [raw_mode]
+        args: list[Any] = [raw_mode]
         if decoder_name == "bmp_rle":
-            args.append(file_info["compression"] == self.RLE4)
+            args.append(file_info["compression"] == self.COMPRESSIONS["RLE4"])
         else:
+            assert isinstance(file_info["width"], int)
             args.append(((file_info["width"] * file_info["bits"] + 31) >> 3) & (~3))
         args.append(file_info["direction"])
         self.tile = [
-            (
+            ImageFile._Tile(
                 decoder_name,
                 (0, 0, file_info["width"], file_info["height"]),
                 offset or self.fp.tell(),
@@ -270,7 +304,7 @@ class BmpImageFile(ImageFile.ImageFile):
             )
         ]
 
-    def _open(self):
+    def _open(self) -> None:
         """Open file, check magic number and read header"""
         # read 14 bytes: magic number, filesize, reserved, header final offset
         head_data = self.fp.read(14)
@@ -287,11 +321,13 @@ class BmpImageFile(ImageFile.ImageFile):
 class BmpRleDecoder(ImageFile.PyDecoder):
     _pulls_fd = True
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
+        assert self.fd is not None
         rle4 = self.args[1]
         data = bytearray()
         x = 0
-        while len(data) < self.state.xsize * self.state.ysize:
+        dest_length = self.state.xsize * self.state.ysize
+        while len(data) < dest_length:
             pixels = self.fd.read(1)
             byte = self.fd.read(1)
             if not pixels or not byte:
@@ -351,7 +387,7 @@ class BmpRleDecoder(ImageFile.PyDecoder):
                     if self.fd.tell() % 2 != 0:
                         self.fd.seek(1, os.SEEK_CUR)
         rawmode = "L" if self.mode == "L" else "P"
-        self.set_as_raw(bytes(data), (rawmode, 0, self.args[-1]))
+        self.set_as_raw(bytes(data), rawmode, (0, self.args[-1]))
         return -1, 0
 
 
@@ -362,7 +398,7 @@ class DibImageFile(BmpImageFile):
     format = "DIB"
     format_description = "Windows Bitmap"
 
-    def _open(self):
+    def _open(self) -> None:
         self._bitmap()
 
 
@@ -380,11 +416,13 @@ SAVE = {
 }
 
 
-def _dib_save(im, fp, filename):
+def _dib_save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     _save(im, fp, filename, False)
 
 
-def _save(im, fp, filename, bitmap_header=True):
+def _save(
+    im: Image.Image, fp: IO[bytes], filename: str | bytes, bitmap_header: bool = True
+) -> None:
     try:
         rawmode, bits, colors = SAVE[im.mode]
     except KeyError as e:
@@ -396,7 +434,7 @@ def _save(im, fp, filename, bitmap_header=True):
     dpi = info.get("dpi", (96, 96))
 
     # 1 meter == 39.3701 inches
-    ppm = tuple(map(lambda x: int(x * 39.3701 + 0.5), dpi))
+    ppm = tuple(int(x * 39.3701 + 0.5) for x in dpi)
 
     stride = ((im.size[0] * bits + 7) // 8 + 3) & (~3)
     header = 40  # or 64 for OS/2 version 2
@@ -446,7 +484,9 @@ def _save(im, fp, filename, bitmap_header=True):
     if palette:
         fp.write(palette)
 
-    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, stride, -1))])
+    ImageFile._save(
+        im, fp, [ImageFile._Tile("raw", (0, 0) + im.size, 0, (rawmode, stride, -1))]
+    )
 
 
 #
diff --git a/src/PIL/BufrStubImagePlugin.py b/src/PIL/BufrStubImagePlugin.py
index 0425bbd75..0ee2f653b 100644
--- a/src/PIL/BufrStubImagePlugin.py
+++ b/src/PIL/BufrStubImagePlugin.py
@@ -8,13 +8,16 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
+from typing import IO
 
 from . import Image, ImageFile
 
 _handler = None
 
 
-def register_handler(handler):
+def register_handler(handler: ImageFile.StubHandler | None) -> None:
     """
     Install application-specific BUFR image handler.
 
@@ -28,7 +31,7 @@ def register_handler(handler):
 # Image adapter
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] == b"BUFR" or prefix[:4] == b"ZCZC"
 
 
@@ -36,7 +39,7 @@ class BufrStubImageFile(ImageFile.StubImageFile):
     format = "BUFR"
     format_description = "BUFR"
 
-    def _open(self):
+    def _open(self) -> None:
         offset = self.fp.tell()
 
         if not _accept(self.fp.read(4)):
@@ -46,18 +49,18 @@ class BufrStubImageFile(ImageFile.StubImageFile):
         self.fp.seek(offset)
 
         # make something up
-        self.mode = "F"
+        self._mode = "F"
         self._size = 1, 1
 
         loader = self._load()
         if loader:
             loader.open(self)
 
-    def _load(self):
+    def _load(self) -> ImageFile.StubHandler | None:
         return _handler
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if _handler is None or not hasattr(_handler, "save"):
         msg = "BUFR save handler not installed"
         raise OSError(msg)
diff --git a/src/PIL/ContainerIO.py b/src/PIL/ContainerIO.py
index 45e80b39a..ec9e66c71 100644
--- a/src/PIL/ContainerIO.py
+++ b/src/PIL/ContainerIO.py
@@ -13,18 +13,20 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 import io
+from collections.abc import Iterable
+from typing import IO, AnyStr, NoReturn
 
 
-class ContainerIO:
+class ContainerIO(IO[AnyStr]):
     """
     A file object that provides read access to a part of an existing
     file (for example a TAR file).
     """
 
-    def __init__(self, file, offset, length):
+    def __init__(self, file: IO[AnyStr], offset: int, length: int) -> None:
         """
         Create file object.
 
@@ -32,7 +34,7 @@ class ContainerIO:
         :param offset: Start of region, in bytes.
         :param length: Size of region, in bytes.
         """
-        self.fh = file
+        self.fh: IO[AnyStr] = file
         self.pos = 0
         self.offset = offset
         self.length = length
@@ -41,10 +43,13 @@ class ContainerIO:
     ##
     # Always false.
 
-    def isatty(self):
+    def isatty(self) -> bool:
         return False
 
-    def seek(self, offset, mode=io.SEEK_SET):
+    def seekable(self) -> bool:
+        return True
+
+    def seek(self, offset: int, mode: int = io.SEEK_SET) -> int:
         """
         Move file pointer.
 
@@ -52,6 +57,7 @@ class ContainerIO:
         :param mode: Starting position. Use 0 for beginning of region, 1
            for current offset, and 2 for end of region.  You cannot move
            the pointer outside the defined region.
+        :returns: Offset from start of region, in bytes.
         """
         if mode == 1:
             self.pos = self.pos + offset
@@ -62,8 +68,9 @@ class ContainerIO:
         # clamp
         self.pos = max(0, min(self.pos, self.length))
         self.fh.seek(self.offset + self.pos)
+        return self.pos
 
-    def tell(self):
+    def tell(self) -> int:
         """
         Get current file pointer.
 
@@ -71,44 +78,51 @@ class ContainerIO:
         """
         return self.pos
 
-    def read(self, n=0):
+    def readable(self) -> bool:
+        return True
+
+    def read(self, n: int = -1) -> AnyStr:
         """
         Read data.
 
-        :param n: Number of bytes to read. If omitted or zero,
+        :param n: Number of bytes to read. If omitted, zero or negative,
             read until end of region.
         :returns: An 8-bit string.
         """
-        if n:
+        if n > 0:
             n = min(n, self.length - self.pos)
         else:
             n = self.length - self.pos
-        if not n:  # EOF
-            return b"" if "b" in self.fh.mode else ""
+        if n <= 0:  # EOF
+            return b"" if "b" in self.fh.mode else ""  # type: ignore[return-value]
         self.pos = self.pos + n
         return self.fh.read(n)
 
-    def readline(self):
+    def readline(self, n: int = -1) -> AnyStr:
         """
         Read a line of text.
 
+        :param n: Number of bytes to read. If omitted, zero or negative,
+            read until end of line.
         :returns: An 8-bit string.
         """
-        s = b"" if "b" in self.fh.mode else ""
+        s: AnyStr = b"" if "b" in self.fh.mode else ""  # type: ignore[assignment]
         newline_character = b"\n" if "b" in self.fh.mode else "\n"
         while True:
             c = self.read(1)
             if not c:
                 break
             s = s + c
-            if c == newline_character:
+            if c == newline_character or len(s) == n:
                 break
         return s
 
-    def readlines(self):
+    def readlines(self, n: int | None = -1) -> list[AnyStr]:
         """
         Read multiple lines of text.
 
+        :param n: Number of lines to read. If omitted, zero, negative or None,
+            read until end of region.
         :returns: A list of 8-bit strings.
         """
         lines = []
@@ -117,4 +131,43 @@ class ContainerIO:
             if not s:
                 break
             lines.append(s)
+            if len(lines) == n:
+                break
         return lines
+
+    def writable(self) -> bool:
+        return False
+
+    def write(self, b: AnyStr) -> NoReturn:
+        raise NotImplementedError()
+
+    def writelines(self, lines: Iterable[AnyStr]) -> NoReturn:
+        raise NotImplementedError()
+
+    def truncate(self, size: int | None = None) -> int:
+        raise NotImplementedError()
+
+    def __enter__(self) -> ContainerIO[AnyStr]:
+        return self
+
+    def __exit__(self, *args: object) -> None:
+        self.close()
+
+    def __iter__(self) -> ContainerIO[AnyStr]:
+        return self
+
+    def __next__(self) -> AnyStr:
+        line = self.readline()
+        if not line:
+            msg = "end of region"
+            raise StopIteration(msg)
+        return line
+
+    def fileno(self) -> int:
+        return self.fh.fileno()
+
+    def flush(self) -> None:
+        self.fh.flush()
+
+    def close(self) -> None:
+        self.fh.close()
diff --git a/src/PIL/CurImagePlugin.py b/src/PIL/CurImagePlugin.py
index 94efff341..c4be0ceca 100644
--- a/src/PIL/CurImagePlugin.py
+++ b/src/PIL/CurImagePlugin.py
@@ -15,7 +15,9 @@
 #
 # See the README file for information on usage and redistribution.
 #
-from . import BmpImagePlugin, Image
+from __future__ import annotations
+
+from . import BmpImagePlugin, Image, ImageFile
 from ._binary import i16le as i16
 from ._binary import i32le as i32
 
@@ -23,7 +25,7 @@ from ._binary import i32le as i32
 # --------------------------------------------------------------------
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] == b"\0\0\2\0"
 
 
@@ -35,7 +37,7 @@ class CurImageFile(BmpImagePlugin.BmpImageFile):
     format = "CUR"
     format_description = "Windows Cursor"
 
-    def _open(self):
+    def _open(self) -> None:
         offset = self.fp.tell()
 
         # check magic
@@ -62,9 +64,7 @@ class CurImageFile(BmpImagePlugin.BmpImageFile):
         # patch up the bitmap height
         self._size = self.size[0], self.size[1] // 2
         d, e, o, a = self.tile[0]
-        self.tile[0] = d, (0, 0) + self.size, o, a
-
-        return
+        self.tile[0] = ImageFile._Tile(d, (0, 0) + self.size, o, a)
 
 
 #
diff --git a/src/PIL/DcxImagePlugin.py b/src/PIL/DcxImagePlugin.py
index cde9d42f0..f67f27d73 100644
--- a/src/PIL/DcxImagePlugin.py
+++ b/src/PIL/DcxImagePlugin.py
@@ -20,6 +20,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 from . import Image
 from ._binary import i32le as i32
@@ -28,7 +29,7 @@ from .PcxImagePlugin import PcxImageFile
 MAGIC = 0x3ADE68B1  # QUIZ: what's this value, then?
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return len(prefix) >= 4 and i32(prefix) == MAGIC
 
 
@@ -41,7 +42,7 @@ class DcxImageFile(PcxImageFile):
     format_description = "Intel DCX"
     _close_exclusive_fp_after_loading = False
 
-    def _open(self):
+    def _open(self) -> None:
         # Header
         s = self.fp.read(4)
         if not _accept(s):
@@ -57,12 +58,12 @@ class DcxImageFile(PcxImageFile):
             self._offset.append(offset)
 
         self._fp = self.fp
-        self.frame = None
+        self.frame = -1
         self.n_frames = len(self._offset)
         self.is_animated = self.n_frames > 1
         self.seek(0)
 
-    def seek(self, frame):
+    def seek(self, frame: int) -> None:
         if not self._seek_check(frame):
             return
         self.frame = frame
@@ -70,7 +71,7 @@ class DcxImageFile(PcxImageFile):
         self.fp.seek(self._offset[frame])
         PcxImageFile._open(self)
 
-    def tell(self):
+    def tell(self) -> int:
         return self.frame
 
 
diff --git a/src/PIL/DdsImagePlugin.py b/src/PIL/DdsImagePlugin.py
index a946daeaa..1b6408237 100644
--- a/src/PIL/DdsImagePlugin.py
+++ b/src/PIL/DdsImagePlugin.py
@@ -3,116 +3,336 @@ A Pillow loader for .dds files (S3TC-compressed aka DXTC)
 Jerome Leclanche <jerome@leclan.ch>
 
 Documentation:
-  https://web.archive.org/web/20170802060935/http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_compression_s3tc.txt
+https://web.archive.org/web/20170802060935/http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_compression_s3tc.txt
 
 The contents of this file are hereby released in the public domain (CC0)
 Full text of the CC0 license:
-  https://creativecommons.org/publicdomain/zero/1.0/
+https://creativecommons.org/publicdomain/zero/1.0/
 """
 
-import struct
-from io import BytesIO
+from __future__ import annotations
 
-from . import Image, ImageFile
+import io
+import struct
+import sys
+from enum import IntEnum, IntFlag
+from typing import IO
+
+from . import Image, ImageFile, ImagePalette
+from ._binary import i32le as i32
+from ._binary import o8
 from ._binary import o32le as o32
 
 # Magic ("DDS ")
 DDS_MAGIC = 0x20534444
 
+
 # DDS flags
-DDSD_CAPS = 0x1
-DDSD_HEIGHT = 0x2
-DDSD_WIDTH = 0x4
-DDSD_PITCH = 0x8
-DDSD_PIXELFORMAT = 0x1000
-DDSD_MIPMAPCOUNT = 0x20000
-DDSD_LINEARSIZE = 0x80000
-DDSD_DEPTH = 0x800000
+class DDSD(IntFlag):
+    CAPS = 0x1
+    HEIGHT = 0x2
+    WIDTH = 0x4
+    PITCH = 0x8
+    PIXELFORMAT = 0x1000
+    MIPMAPCOUNT = 0x20000
+    LINEARSIZE = 0x80000
+    DEPTH = 0x800000
+
 
 # DDS caps
-DDSCAPS_COMPLEX = 0x8
-DDSCAPS_TEXTURE = 0x1000
-DDSCAPS_MIPMAP = 0x400000
+class DDSCAPS(IntFlag):
+    COMPLEX = 0x8
+    TEXTURE = 0x1000
+    MIPMAP = 0x400000
+
+
+class DDSCAPS2(IntFlag):
+    CUBEMAP = 0x200
+    CUBEMAP_POSITIVEX = 0x400
+    CUBEMAP_NEGATIVEX = 0x800
+    CUBEMAP_POSITIVEY = 0x1000
+    CUBEMAP_NEGATIVEY = 0x2000
+    CUBEMAP_POSITIVEZ = 0x4000
+    CUBEMAP_NEGATIVEZ = 0x8000
+    VOLUME = 0x200000
 
-DDSCAPS2_CUBEMAP = 0x200
-DDSCAPS2_CUBEMAP_POSITIVEX = 0x400
-DDSCAPS2_CUBEMAP_NEGATIVEX = 0x800
-DDSCAPS2_CUBEMAP_POSITIVEY = 0x1000
-DDSCAPS2_CUBEMAP_NEGATIVEY = 0x2000
-DDSCAPS2_CUBEMAP_POSITIVEZ = 0x4000
-DDSCAPS2_CUBEMAP_NEGATIVEZ = 0x8000
-DDSCAPS2_VOLUME = 0x200000
 
 # Pixel Format
-DDPF_ALPHAPIXELS = 0x1
-DDPF_ALPHA = 0x2
-DDPF_FOURCC = 0x4
-DDPF_PALETTEINDEXED8 = 0x20
-DDPF_RGB = 0x40
-DDPF_LUMINANCE = 0x20000
-
-
-# dds.h
-
-DDS_FOURCC = DDPF_FOURCC
-DDS_RGB = DDPF_RGB
-DDS_RGBA = DDPF_RGB | DDPF_ALPHAPIXELS
-DDS_LUMINANCE = DDPF_LUMINANCE
-DDS_LUMINANCEA = DDPF_LUMINANCE | DDPF_ALPHAPIXELS
-DDS_ALPHA = DDPF_ALPHA
-DDS_PAL8 = DDPF_PALETTEINDEXED8
-
-DDS_HEADER_FLAGS_TEXTURE = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT
-DDS_HEADER_FLAGS_MIPMAP = DDSD_MIPMAPCOUNT
-DDS_HEADER_FLAGS_VOLUME = DDSD_DEPTH
-DDS_HEADER_FLAGS_PITCH = DDSD_PITCH
-DDS_HEADER_FLAGS_LINEARSIZE = DDSD_LINEARSIZE
-
-DDS_HEIGHT = DDSD_HEIGHT
-DDS_WIDTH = DDSD_WIDTH
-
-DDS_SURFACE_FLAGS_TEXTURE = DDSCAPS_TEXTURE
-DDS_SURFACE_FLAGS_MIPMAP = DDSCAPS_COMPLEX | DDSCAPS_MIPMAP
-DDS_SURFACE_FLAGS_CUBEMAP = DDSCAPS_COMPLEX
-
-DDS_CUBEMAP_POSITIVEX = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEX
-DDS_CUBEMAP_NEGATIVEX = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEX
-DDS_CUBEMAP_POSITIVEY = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEY
-DDS_CUBEMAP_NEGATIVEY = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEY
-DDS_CUBEMAP_POSITIVEZ = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEZ
-DDS_CUBEMAP_NEGATIVEZ = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEZ
-
-
-# DXT1
-DXT1_FOURCC = 0x31545844
-
-# DXT3
-DXT3_FOURCC = 0x33545844
-
-# DXT5
-DXT5_FOURCC = 0x35545844
+class DDPF(IntFlag):
+    ALPHAPIXELS = 0x1
+    ALPHA = 0x2
+    FOURCC = 0x4
+    PALETTEINDEXED8 = 0x20
+    RGB = 0x40
+    LUMINANCE = 0x20000
 
 
 # dxgiformat.h
+class DXGI_FORMAT(IntEnum):
+    UNKNOWN = 0
+    R32G32B32A32_TYPELESS = 1
+    R32G32B32A32_FLOAT = 2
+    R32G32B32A32_UINT = 3
+    R32G32B32A32_SINT = 4
+    R32G32B32_TYPELESS = 5
+    R32G32B32_FLOAT = 6
+    R32G32B32_UINT = 7
+    R32G32B32_SINT = 8
+    R16G16B16A16_TYPELESS = 9
+    R16G16B16A16_FLOAT = 10
+    R16G16B16A16_UNORM = 11
+    R16G16B16A16_UINT = 12
+    R16G16B16A16_SNORM = 13
+    R16G16B16A16_SINT = 14
+    R32G32_TYPELESS = 15
+    R32G32_FLOAT = 16
+    R32G32_UINT = 17
+    R32G32_SINT = 18
+    R32G8X24_TYPELESS = 19
+    D32_FLOAT_S8X24_UINT = 20
+    R32_FLOAT_X8X24_TYPELESS = 21
+    X32_TYPELESS_G8X24_UINT = 22
+    R10G10B10A2_TYPELESS = 23
+    R10G10B10A2_UNORM = 24
+    R10G10B10A2_UINT = 25
+    R11G11B10_FLOAT = 26
+    R8G8B8A8_TYPELESS = 27
+    R8G8B8A8_UNORM = 28
+    R8G8B8A8_UNORM_SRGB = 29
+    R8G8B8A8_UINT = 30
+    R8G8B8A8_SNORM = 31
+    R8G8B8A8_SINT = 32
+    R16G16_TYPELESS = 33
+    R16G16_FLOAT = 34
+    R16G16_UNORM = 35
+    R16G16_UINT = 36
+    R16G16_SNORM = 37
+    R16G16_SINT = 38
+    R32_TYPELESS = 39
+    D32_FLOAT = 40
+    R32_FLOAT = 41
+    R32_UINT = 42
+    R32_SINT = 43
+    R24G8_TYPELESS = 44
+    D24_UNORM_S8_UINT = 45
+    R24_UNORM_X8_TYPELESS = 46
+    X24_TYPELESS_G8_UINT = 47
+    R8G8_TYPELESS = 48
+    R8G8_UNORM = 49
+    R8G8_UINT = 50
+    R8G8_SNORM = 51
+    R8G8_SINT = 52
+    R16_TYPELESS = 53
+    R16_FLOAT = 54
+    D16_UNORM = 55
+    R16_UNORM = 56
+    R16_UINT = 57
+    R16_SNORM = 58
+    R16_SINT = 59
+    R8_TYPELESS = 60
+    R8_UNORM = 61
+    R8_UINT = 62
+    R8_SNORM = 63
+    R8_SINT = 64
+    A8_UNORM = 65
+    R1_UNORM = 66
+    R9G9B9E5_SHAREDEXP = 67
+    R8G8_B8G8_UNORM = 68
+    G8R8_G8B8_UNORM = 69
+    BC1_TYPELESS = 70
+    BC1_UNORM = 71
+    BC1_UNORM_SRGB = 72
+    BC2_TYPELESS = 73
+    BC2_UNORM = 74
+    BC2_UNORM_SRGB = 75
+    BC3_TYPELESS = 76
+    BC3_UNORM = 77
+    BC3_UNORM_SRGB = 78
+    BC4_TYPELESS = 79
+    BC4_UNORM = 80
+    BC4_SNORM = 81
+    BC5_TYPELESS = 82
+    BC5_UNORM = 83
+    BC5_SNORM = 84
+    B5G6R5_UNORM = 85
+    B5G5R5A1_UNORM = 86
+    B8G8R8A8_UNORM = 87
+    B8G8R8X8_UNORM = 88
+    R10G10B10_XR_BIAS_A2_UNORM = 89
+    B8G8R8A8_TYPELESS = 90
+    B8G8R8A8_UNORM_SRGB = 91
+    B8G8R8X8_TYPELESS = 92
+    B8G8R8X8_UNORM_SRGB = 93
+    BC6H_TYPELESS = 94
+    BC6H_UF16 = 95
+    BC6H_SF16 = 96
+    BC7_TYPELESS = 97
+    BC7_UNORM = 98
+    BC7_UNORM_SRGB = 99
+    AYUV = 100
+    Y410 = 101
+    Y416 = 102
+    NV12 = 103
+    P010 = 104
+    P016 = 105
+    OPAQUE_420 = 106
+    YUY2 = 107
+    Y210 = 108
+    Y216 = 109
+    NV11 = 110
+    AI44 = 111
+    IA44 = 112
+    P8 = 113
+    A8P8 = 114
+    B4G4R4A4_UNORM = 115
+    P208 = 130
+    V208 = 131
+    V408 = 132
+    SAMPLER_FEEDBACK_MIN_MIP_OPAQUE = 189
+    SAMPLER_FEEDBACK_MIP_REGION_USED_OPAQUE = 190
 
-DXGI_FORMAT_R8G8B8A8_TYPELESS = 27
-DXGI_FORMAT_R8G8B8A8_UNORM = 28
-DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = 29
-DXGI_FORMAT_BC5_TYPELESS = 82
-DXGI_FORMAT_BC5_UNORM = 83
-DXGI_FORMAT_BC5_SNORM = 84
-DXGI_FORMAT_BC6H_UF16 = 95
-DXGI_FORMAT_BC6H_SF16 = 96
-DXGI_FORMAT_BC7_TYPELESS = 97
-DXGI_FORMAT_BC7_UNORM = 98
-DXGI_FORMAT_BC7_UNORM_SRGB = 99
+
+class D3DFMT(IntEnum):
+    UNKNOWN = 0
+    R8G8B8 = 20
+    A8R8G8B8 = 21
+    X8R8G8B8 = 22
+    R5G6B5 = 23
+    X1R5G5B5 = 24
+    A1R5G5B5 = 25
+    A4R4G4B4 = 26
+    R3G3B2 = 27
+    A8 = 28
+    A8R3G3B2 = 29
+    X4R4G4B4 = 30
+    A2B10G10R10 = 31
+    A8B8G8R8 = 32
+    X8B8G8R8 = 33
+    G16R16 = 34
+    A2R10G10B10 = 35
+    A16B16G16R16 = 36
+    A8P8 = 40
+    P8 = 41
+    L8 = 50
+    A8L8 = 51
+    A4L4 = 52
+    V8U8 = 60
+    L6V5U5 = 61
+    X8L8V8U8 = 62
+    Q8W8V8U8 = 63
+    V16U16 = 64
+    A2W10V10U10 = 67
+    D16_LOCKABLE = 70
+    D32 = 71
+    D15S1 = 73
+    D24S8 = 75
+    D24X8 = 77
+    D24X4S4 = 79
+    D16 = 80
+    D32F_LOCKABLE = 82
+    D24FS8 = 83
+    D32_LOCKABLE = 84
+    S8_LOCKABLE = 85
+    L16 = 81
+    VERTEXDATA = 100
+    INDEX16 = 101
+    INDEX32 = 102
+    Q16W16V16U16 = 110
+    R16F = 111
+    G16R16F = 112
+    A16B16G16R16F = 113
+    R32F = 114
+    G32R32F = 115
+    A32B32G32R32F = 116
+    CxV8U8 = 117
+    A1 = 118
+    A2B10G10R10_XR_BIAS = 119
+    BINARYBUFFER = 199
+
+    UYVY = i32(b"UYVY")
+    R8G8_B8G8 = i32(b"RGBG")
+    YUY2 = i32(b"YUY2")
+    G8R8_G8B8 = i32(b"GRGB")
+    DXT1 = i32(b"DXT1")
+    DXT2 = i32(b"DXT2")
+    DXT3 = i32(b"DXT3")
+    DXT4 = i32(b"DXT4")
+    DXT5 = i32(b"DXT5")
+    DX10 = i32(b"DX10")
+    BC4S = i32(b"BC4S")
+    BC4U = i32(b"BC4U")
+    BC5S = i32(b"BC5S")
+    BC5U = i32(b"BC5U")
+    ATI1 = i32(b"ATI1")
+    ATI2 = i32(b"ATI2")
+    MULTI2_ARGB8 = i32(b"MET1")
+
+
+# Backward compatibility layer
+module = sys.modules[__name__]
+for item in DDSD:
+    assert item.name is not None
+    setattr(module, f"DDSD_{item.name}", item.value)
+for item1 in DDSCAPS:
+    assert item1.name is not None
+    setattr(module, f"DDSCAPS_{item1.name}", item1.value)
+for item2 in DDSCAPS2:
+    assert item2.name is not None
+    setattr(module, f"DDSCAPS2_{item2.name}", item2.value)
+for item3 in DDPF:
+    assert item3.name is not None
+    setattr(module, f"DDPF_{item3.name}", item3.value)
+
+DDS_FOURCC = DDPF.FOURCC
+DDS_RGB = DDPF.RGB
+DDS_RGBA = DDPF.RGB | DDPF.ALPHAPIXELS
+DDS_LUMINANCE = DDPF.LUMINANCE
+DDS_LUMINANCEA = DDPF.LUMINANCE | DDPF.ALPHAPIXELS
+DDS_ALPHA = DDPF.ALPHA
+DDS_PAL8 = DDPF.PALETTEINDEXED8
+
+DDS_HEADER_FLAGS_TEXTURE = DDSD.CAPS | DDSD.HEIGHT | DDSD.WIDTH | DDSD.PIXELFORMAT
+DDS_HEADER_FLAGS_MIPMAP = DDSD.MIPMAPCOUNT
+DDS_HEADER_FLAGS_VOLUME = DDSD.DEPTH
+DDS_HEADER_FLAGS_PITCH = DDSD.PITCH
+DDS_HEADER_FLAGS_LINEARSIZE = DDSD.LINEARSIZE
+
+DDS_HEIGHT = DDSD.HEIGHT
+DDS_WIDTH = DDSD.WIDTH
+
+DDS_SURFACE_FLAGS_TEXTURE = DDSCAPS.TEXTURE
+DDS_SURFACE_FLAGS_MIPMAP = DDSCAPS.COMPLEX | DDSCAPS.MIPMAP
+DDS_SURFACE_FLAGS_CUBEMAP = DDSCAPS.COMPLEX
+
+DDS_CUBEMAP_POSITIVEX = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_POSITIVEX
+DDS_CUBEMAP_NEGATIVEX = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_NEGATIVEX
+DDS_CUBEMAP_POSITIVEY = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_POSITIVEY
+DDS_CUBEMAP_NEGATIVEY = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_NEGATIVEY
+DDS_CUBEMAP_POSITIVEZ = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_POSITIVEZ
+DDS_CUBEMAP_NEGATIVEZ = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_NEGATIVEZ
+
+DXT1_FOURCC = D3DFMT.DXT1
+DXT3_FOURCC = D3DFMT.DXT3
+DXT5_FOURCC = D3DFMT.DXT5
+
+DXGI_FORMAT_R8G8B8A8_TYPELESS = DXGI_FORMAT.R8G8B8A8_TYPELESS
+DXGI_FORMAT_R8G8B8A8_UNORM = DXGI_FORMAT.R8G8B8A8_UNORM
+DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = DXGI_FORMAT.R8G8B8A8_UNORM_SRGB
+DXGI_FORMAT_BC5_TYPELESS = DXGI_FORMAT.BC5_TYPELESS
+DXGI_FORMAT_BC5_UNORM = DXGI_FORMAT.BC5_UNORM
+DXGI_FORMAT_BC5_SNORM = DXGI_FORMAT.BC5_SNORM
+DXGI_FORMAT_BC6H_UF16 = DXGI_FORMAT.BC6H_UF16
+DXGI_FORMAT_BC6H_SF16 = DXGI_FORMAT.BC6H_SF16
+DXGI_FORMAT_BC7_TYPELESS = DXGI_FORMAT.BC7_TYPELESS
+DXGI_FORMAT_BC7_UNORM = DXGI_FORMAT.BC7_UNORM
+DXGI_FORMAT_BC7_UNORM_SRGB = DXGI_FORMAT.BC7_UNORM_SRGB
 
 
 class DdsImageFile(ImageFile.ImageFile):
     format = "DDS"
     format_description = "DirectDraw Surface"
 
-    def _open(self):
+    def _open(self) -> None:
         if not _accept(self.fp.read(4)):
             msg = "not a DDS file"
             raise SyntaxError(msg)
@@ -124,168 +344,232 @@ class DdsImageFile(ImageFile.ImageFile):
         if len(header_bytes) != 120:
             msg = f"Incomplete header: {len(header_bytes)} bytes"
             raise OSError(msg)
-        header = BytesIO(header_bytes)
+        header = io.BytesIO(header_bytes)
 
         flags, height, width = struct.unpack("<3I", header.read(12))
         self._size = (width, height)
-        self.mode = "RGBA"
+        extents = (0, 0) + self.size
 
         pitch, depth, mipmaps = struct.unpack("<3I", header.read(12))
         struct.unpack("<11I", header.read(44))  # reserved
 
         # pixel format
-        pfsize, pfflags = struct.unpack("<2I", header.read(8))
-        fourcc = header.read(4)
-        (bitcount,) = struct.unpack("<I", header.read(4))
-        masks = struct.unpack("<4I", header.read(16))
-        if pfflags & DDPF_LUMINANCE:
-            # Texture contains uncompressed L or LA data
-            if pfflags & DDPF_ALPHAPIXELS:
-                self.mode = "LA"
-            else:
-                self.mode = "L"
-
-            self.tile = [("raw", (0, 0) + self.size, 0, (self.mode, 0, 1))]
-        elif pfflags & DDPF_RGB:
+        pfsize, pfflags, fourcc, bitcount = struct.unpack("<4I", header.read(16))
+        n = 0
+        rawmode = None
+        if pfflags & DDPF.RGB:
             # Texture contains uncompressed RGB data
-            masks = {mask: ["R", "G", "B", "A"][i] for i, mask in enumerate(masks)}
-            rawmode = ""
-            if pfflags & DDPF_ALPHAPIXELS:
-                rawmode += masks[0xFF000000]
+            if pfflags & DDPF.ALPHAPIXELS:
+                self._mode = "RGBA"
+                mask_count = 4
             else:
-                self.mode = "RGB"
-            rawmode += masks[0xFF0000] + masks[0xFF00] + masks[0xFF]
+                self._mode = "RGB"
+                mask_count = 3
 
-            self.tile = [("raw", (0, 0) + self.size, 0, (rawmode[::-1], 0, 1))]
-        else:
-            data_start = header_size + 4
-            n = 0
-            if fourcc == b"DXT1":
+            masks = struct.unpack(f"<{mask_count}I", header.read(mask_count * 4))
+            self.tile = [ImageFile._Tile("dds_rgb", extents, 0, (bitcount, masks))]
+            return
+        elif pfflags & DDPF.LUMINANCE:
+            if bitcount == 8:
+                self._mode = "L"
+            elif bitcount == 16 and pfflags & DDPF.ALPHAPIXELS:
+                self._mode = "LA"
+            else:
+                msg = f"Unsupported bitcount {bitcount} for {pfflags}"
+                raise OSError(msg)
+        elif pfflags & DDPF.PALETTEINDEXED8:
+            self._mode = "P"
+            self.palette = ImagePalette.raw("RGBA", self.fp.read(1024))
+            self.palette.mode = "RGBA"
+        elif pfflags & DDPF.FOURCC:
+            offset = header_size + 4
+            if fourcc == D3DFMT.DXT1:
+                self._mode = "RGBA"
                 self.pixel_format = "DXT1"
                 n = 1
-            elif fourcc == b"DXT3":
+            elif fourcc == D3DFMT.DXT3:
+                self._mode = "RGBA"
                 self.pixel_format = "DXT3"
                 n = 2
-            elif fourcc == b"DXT5":
+            elif fourcc == D3DFMT.DXT5:
+                self._mode = "RGBA"
                 self.pixel_format = "DXT5"
                 n = 3
-            elif fourcc == b"ATI1":
+            elif fourcc in (D3DFMT.BC4U, D3DFMT.ATI1):
+                self._mode = "L"
                 self.pixel_format = "BC4"
                 n = 4
-                self.mode = "L"
-            elif fourcc == b"ATI2":
-                self.pixel_format = "BC5"
-                n = 5
-                self.mode = "RGB"
-            elif fourcc == b"BC5S":
+            elif fourcc == D3DFMT.BC5S:
+                self._mode = "RGB"
                 self.pixel_format = "BC5S"
                 n = 5
-                self.mode = "RGB"
-            elif fourcc == b"DX10":
-                data_start += 20
+            elif fourcc in (D3DFMT.BC5U, D3DFMT.ATI2):
+                self._mode = "RGB"
+                self.pixel_format = "BC5"
+                n = 5
+            elif fourcc == D3DFMT.DX10:
+                offset += 20
                 # ignoring flags which pertain to volume textures and cubemaps
                 (dxgi_format,) = struct.unpack("<I", self.fp.read(4))
                 self.fp.read(16)
-                if dxgi_format in (DXGI_FORMAT_BC5_TYPELESS, DXGI_FORMAT_BC5_UNORM):
+                if dxgi_format in (
+                    DXGI_FORMAT.BC1_UNORM,
+                    DXGI_FORMAT.BC1_TYPELESS,
+                ):
+                    self._mode = "RGBA"
+                    self.pixel_format = "BC1"
+                    n = 1
+                elif dxgi_format in (DXGI_FORMAT.BC4_TYPELESS, DXGI_FORMAT.BC4_UNORM):
+                    self._mode = "L"
+                    self.pixel_format = "BC4"
+                    n = 4
+                elif dxgi_format in (DXGI_FORMAT.BC5_TYPELESS, DXGI_FORMAT.BC5_UNORM):
+                    self._mode = "RGB"
                     self.pixel_format = "BC5"
                     n = 5
-                    self.mode = "RGB"
-                elif dxgi_format == DXGI_FORMAT_BC5_SNORM:
+                elif dxgi_format == DXGI_FORMAT.BC5_SNORM:
+                    self._mode = "RGB"
                     self.pixel_format = "BC5S"
                     n = 5
-                    self.mode = "RGB"
-                elif dxgi_format == DXGI_FORMAT_BC6H_UF16:
+                elif dxgi_format == DXGI_FORMAT.BC6H_UF16:
+                    self._mode = "RGB"
                     self.pixel_format = "BC6H"
                     n = 6
-                    self.mode = "RGB"
-                elif dxgi_format == DXGI_FORMAT_BC6H_SF16:
+                elif dxgi_format == DXGI_FORMAT.BC6H_SF16:
+                    self._mode = "RGB"
                     self.pixel_format = "BC6HS"
                     n = 6
-                    self.mode = "RGB"
-                elif dxgi_format in (DXGI_FORMAT_BC7_TYPELESS, DXGI_FORMAT_BC7_UNORM):
-                    self.pixel_format = "BC7"
-                    n = 7
-                elif dxgi_format == DXGI_FORMAT_BC7_UNORM_SRGB:
-                    self.pixel_format = "BC7"
-                    self.info["gamma"] = 1 / 2.2
-                    n = 7
                 elif dxgi_format in (
-                    DXGI_FORMAT_R8G8B8A8_TYPELESS,
-                    DXGI_FORMAT_R8G8B8A8_UNORM,
-                    DXGI_FORMAT_R8G8B8A8_UNORM_SRGB,
+                    DXGI_FORMAT.BC7_TYPELESS,
+                    DXGI_FORMAT.BC7_UNORM,
+                    DXGI_FORMAT.BC7_UNORM_SRGB,
                 ):
-                    self.tile = [("raw", (0, 0) + self.size, 0, ("RGBA", 0, 1))]
-                    if dxgi_format == DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
+                    self._mode = "RGBA"
+                    self.pixel_format = "BC7"
+                    n = 7
+                    if dxgi_format == DXGI_FORMAT.BC7_UNORM_SRGB:
+                        self.info["gamma"] = 1 / 2.2
+                elif dxgi_format in (
+                    DXGI_FORMAT.R8G8B8A8_TYPELESS,
+                    DXGI_FORMAT.R8G8B8A8_UNORM,
+                    DXGI_FORMAT.R8G8B8A8_UNORM_SRGB,
+                ):
+                    self._mode = "RGBA"
+                    if dxgi_format == DXGI_FORMAT.R8G8B8A8_UNORM_SRGB:
                         self.info["gamma"] = 1 / 2.2
-                    return
                 else:
                     msg = f"Unimplemented DXGI format {dxgi_format}"
                     raise NotImplementedError(msg)
             else:
                 msg = f"Unimplemented pixel format {repr(fourcc)}"
                 raise NotImplementedError(msg)
+        else:
+            msg = f"Unknown pixel format flags {pfflags}"
+            raise NotImplementedError(msg)
 
+        if n:
             self.tile = [
-                ("bcn", (0, 0) + self.size, data_start, (n, self.pixel_format))
+                ImageFile._Tile("bcn", extents, offset, (n, self.pixel_format))
             ]
+        else:
+            self.tile = [ImageFile._Tile("raw", extents, 0, rawmode or self.mode)]
 
-    def load_seek(self, pos):
+    def load_seek(self, pos: int) -> None:
         pass
 
 
-def _save(im, fp, filename):
+class DdsRgbDecoder(ImageFile.PyDecoder):
+    _pulls_fd = True
+
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
+        assert self.fd is not None
+        bitcount, masks = self.args
+
+        # Some masks will be padded with zeros, e.g. R 0b11 G 0b1100
+        # Calculate how many zeros each mask is padded with
+        mask_offsets = []
+        # And the maximum value of each channel without the padding
+        mask_totals = []
+        for mask in masks:
+            offset = 0
+            if mask != 0:
+                while mask >> (offset + 1) << (offset + 1) == mask:
+                    offset += 1
+            mask_offsets.append(offset)
+            mask_totals.append(mask >> offset)
+
+        data = bytearray()
+        bytecount = bitcount // 8
+        dest_length = self.state.xsize * self.state.ysize * len(masks)
+        while len(data) < dest_length:
+            value = int.from_bytes(self.fd.read(bytecount), "little")
+            for i, mask in enumerate(masks):
+                masked_value = value & mask
+                # Remove the zero padding, and scale it to 8 bits
+                data += o8(
+                    int(((masked_value >> mask_offsets[i]) / mask_totals[i]) * 255)
+                )
+        self.set_as_raw(data)
+        return -1, 0
+
+
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if im.mode not in ("RGB", "RGBA", "L", "LA"):
         msg = f"cannot write mode {im.mode} as DDS"
         raise OSError(msg)
 
-    rawmode = im.mode
-    masks = [0xFF0000, 0xFF00, 0xFF]
-    if im.mode in ("L", "LA"):
-        pixel_flags = DDPF_LUMINANCE
+    alpha = im.mode[-1] == "A"
+    if im.mode[0] == "L":
+        pixel_flags = DDPF.LUMINANCE
+        rawmode = im.mode
+        if alpha:
+            rgba_mask = [0x000000FF, 0x000000FF, 0x000000FF]
+        else:
+            rgba_mask = [0xFF000000, 0xFF000000, 0xFF000000]
     else:
-        pixel_flags = DDPF_RGB
-        rawmode = rawmode[::-1]
-    if im.mode in ("LA", "RGBA"):
-        pixel_flags |= DDPF_ALPHAPIXELS
-        masks.append(0xFF000000)
+        pixel_flags = DDPF.RGB
+        rawmode = im.mode[::-1]
+        rgba_mask = [0x00FF0000, 0x0000FF00, 0x000000FF]
 
-    bitcount = len(masks) * 8
-    while len(masks) < 4:
-        masks.append(0)
+        if alpha:
+            r, g, b, a = im.split()
+            im = Image.merge("RGBA", (a, r, g, b))
+    if alpha:
+        pixel_flags |= DDPF.ALPHAPIXELS
+    rgba_mask.append(0xFF000000 if alpha else 0)
+
+    flags = DDSD.CAPS | DDSD.HEIGHT | DDSD.WIDTH | DDSD.PITCH | DDSD.PIXELFORMAT
+    bitcount = len(im.getbands()) * 8
+    pitch = (im.width * bitcount + 7) // 8
 
     fp.write(
         o32(DDS_MAGIC)
-        + o32(124)  # header size
-        + o32(
-            DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PITCH | DDSD_PIXELFORMAT
-        )  # flags
-        + o32(im.height)
-        + o32(im.width)
-        + o32((im.width * bitcount + 7) // 8)  # pitch
-        + o32(0)  # depth
-        + o32(0)  # mipmaps
-        + o32(0) * 11  # reserved
-        + o32(32)  # pfsize
-        + o32(pixel_flags)  # pfflags
-        + o32(0)  # fourcc
-        + o32(bitcount)  # bitcount
-        + b"".join(o32(mask) for mask in masks)  # rgbabitmask
-        + o32(DDSCAPS_TEXTURE)  # dwCaps
-        + o32(0)  # dwCaps2
-        + o32(0)  # dwCaps3
-        + o32(0)  # dwCaps4
-        + o32(0)  # dwReserved2
+        + struct.pack(
+            "<7I",
+            124,  # header size
+            flags,  # flags
+            im.height,
+            im.width,
+            pitch,
+            0,  # depth
+            0,  # mipmaps
+        )
+        + struct.pack("11I", *((0,) * 11))  # reserved
+        # pfsize, pfflags, fourcc, bitcount
+        + struct.pack("<4I", 32, pixel_flags, 0, bitcount)
+        + struct.pack("<4I", *rgba_mask)  # dwRGBABitMask
+        + struct.pack("<5I", DDSCAPS.TEXTURE, 0, 0, 0, 0)
+    )
+    ImageFile._save(
+        im, fp, [ImageFile._Tile("raw", (0, 0) + im.size, 0, (rawmode, 0, 1))]
     )
-    if im.mode == "RGBA":
-        r, g, b, a = im.split()
-        im = Image.merge("RGBA", (a, r, g, b))
-    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, 1))])
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] == b"DDS "
 
 
 Image.register_open(DdsImageFile.format, DdsImageFile, _accept)
+Image.register_decoder("dds_rgb", DdsRgbDecoder)
 Image.register_save(DdsImageFile.format, _save)
 Image.register_extension(DdsImageFile.format, ".dds")
diff --git a/src/PIL/EpsImagePlugin.py b/src/PIL/EpsImagePlugin.py
index 6b1b5947e..fb1e301c0 100644
--- a/src/PIL/EpsImagePlugin.py
+++ b/src/PIL/EpsImagePlugin.py
@@ -19,6 +19,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import io
 import os
@@ -26,10 +27,10 @@ import re
 import subprocess
 import sys
 import tempfile
+from typing import IO
 
 from . import Image, ImageFile
 from ._binary import i32le as i32
-from ._deprecate import deprecate
 
 # --------------------------------------------------------------------
 
@@ -37,48 +38,59 @@ from ._deprecate import deprecate
 split = re.compile(r"^%%([^:]*):[ \t]*(.*)[ \t]*$")
 field = re.compile(r"^%[%!\w]([^:]*)[ \t]*$")
 
+gs_binary: str | bool | None = None
 gs_windows_binary = None
-if sys.platform.startswith("win"):
-    import shutil
-
-    for binary in ("gswin32c", "gswin64c", "gs"):
-        if shutil.which(binary) is not None:
-            gs_windows_binary = binary
-            break
-    else:
-        gs_windows_binary = False
 
 
-def has_ghostscript():
-    if gs_windows_binary:
-        return True
-    if not sys.platform.startswith("win"):
-        try:
-            subprocess.check_call(["gs", "--version"], stdout=subprocess.DEVNULL)
-            return True
-        except OSError:
-            # No Ghostscript
-            pass
-    return False
+def has_ghostscript() -> bool:
+    global gs_binary, gs_windows_binary
+    if gs_binary is None:
+        if sys.platform.startswith("win"):
+            if gs_windows_binary is None:
+                import shutil
+
+                for binary in ("gswin32c", "gswin64c", "gs"):
+                    if shutil.which(binary) is not None:
+                        gs_windows_binary = binary
+                        break
+                else:
+                    gs_windows_binary = False
+            gs_binary = gs_windows_binary
+        else:
+            try:
+                subprocess.check_call(["gs", "--version"], stdout=subprocess.DEVNULL)
+                gs_binary = "gs"
+            except OSError:
+                gs_binary = False
+    return gs_binary is not False
 
 
-def Ghostscript(tile, size, fp, scale=1, transparency=False):
+def Ghostscript(
+    tile: list[ImageFile._Tile],
+    size: tuple[int, int],
+    fp: IO[bytes],
+    scale: int = 1,
+    transparency: bool = False,
+) -> Image.core.ImagingCore:
     """Render an image using Ghostscript"""
+    global gs_binary
+    if not has_ghostscript():
+        msg = "Unable to locate Ghostscript on paths"
+        raise OSError(msg)
+    assert isinstance(gs_binary, str)
 
     # Unpack decoder tile
-    decoder, tile, offset, data = tile[0]
-    length, bbox = data
+    args = tile[0].args
+    assert isinstance(args, tuple)
+    length, bbox = args
 
     # Hack to support hi-res rendering
     scale = int(scale) or 1
-    # orig_size = size
-    # orig_bbox = bbox
-    size = (size[0] * scale, size[1] * scale)
+    width = size[0] * scale
+    height = size[1] * scale
     # resolution is dependent on bbox and size
-    res = (
-        72.0 * size[0] / (bbox[2] - bbox[0]),
-        72.0 * size[1] / (bbox[3] - bbox[1]),
-    )
+    res_x = 72.0 * width / (bbox[2] - bbox[0])
+    res_y = 72.0 * height / (bbox[3] - bbox[1])
 
     out_fd, outfile = tempfile.mkstemp()
     os.close(out_fd)
@@ -109,14 +121,20 @@ def Ghostscript(tile, size, fp, scale=1, transparency=False):
                 lengthfile -= len(s)
                 f.write(s)
 
-    device = "pngalpha" if transparency else "ppmraw"
+    if transparency:
+        # "RGBA"
+        device = "pngalpha"
+    else:
+        # "pnmraw" automatically chooses between
+        # PBM ("1"), PGM ("L"), and PPM ("RGB").
+        device = "pnmraw"
 
     # Build Ghostscript command
     command = [
-        "gs",
+        gs_binary,
         "-q",  # quiet mode
-        "-g%dx%d" % size,  # set output geometry (pixels)
-        "-r%fx%f" % res,  # set input DPI (dots per inch)
+        f"-g{width:d}x{height:d}",  # set output geometry (pixels)
+        f"-r{res_x:f}x{res_y:f}",  # set input DPI (dots per inch)
         "-dBATCH",  # exit after processing
         "-dNOPAUSE",  # don't pause between pages
         "-dSAFER",  # safe mode
@@ -132,19 +150,6 @@ def Ghostscript(tile, size, fp, scale=1, transparency=False):
         "showpage",
     ]
 
-    if gs_windows_binary is not None:
-        if not gs_windows_binary:
-            try:
-                os.unlink(outfile)
-                if infile_temp:
-                    os.unlink(infile_temp)
-            except OSError:
-                pass
-
-            msg = "Unable to locate Ghostscript on paths"
-            raise OSError(msg)
-        command[0] = gs_windows_binary
-
     # push data through Ghostscript
     try:
         startupinfo = None
@@ -152,8 +157,9 @@ def Ghostscript(tile, size, fp, scale=1, transparency=False):
             startupinfo = subprocess.STARTUPINFO()
             startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
         subprocess.check_call(command, startupinfo=startupinfo)
-        out_im = Image.open(outfile)
-        out_im.load()
+        with Image.open(outfile) as out_im:
+            out_im.load()
+            return out_im.im.copy()
     finally:
         try:
             os.unlink(outfile)
@@ -162,49 +168,8 @@ def Ghostscript(tile, size, fp, scale=1, transparency=False):
         except OSError:
             pass
 
-    im = out_im.im.copy()
-    out_im.close()
-    return im
 
-
-class PSFile:
-    """
-    Wrapper for bytesio object that treats either CR or LF as end of line.
-    This class is no longer used internally, but kept for backwards compatibility.
-    """
-
-    def __init__(self, fp):
-        deprecate(
-            "PSFile",
-            11,
-            action="If you need the functionality of this class "
-            "you will need to implement it yourself.",
-        )
-        self.fp = fp
-        self.char = None
-
-    def seek(self, offset, whence=io.SEEK_SET):
-        self.char = None
-        self.fp.seek(offset, whence)
-
-    def readline(self):
-        s = [self.char or b""]
-        self.char = None
-
-        c = self.fp.read(1)
-        while (c not in b"\r\n") and len(c):
-            s.append(c)
-            c = self.fp.read(1)
-
-        self.char = self.fp.read(1)
-        # line endings can be 1 or 2 of \r \n, in either order
-        if self.char in b"\r\n":
-            self.char = None
-
-        return b"".join(s).decode("latin-1")
-
-
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] == b"%!PS" or (len(prefix) >= 4 and i32(prefix) == 0xC6D3D0C5)
 
 
@@ -221,21 +186,32 @@ class EpsImageFile(ImageFile.ImageFile):
 
     mode_map = {1: "L", 2: "LAB", 3: "RGB", 4: "CMYK"}
 
-    def _open(self):
+    def _open(self) -> None:
         (length, offset) = self._find_offset(self.fp)
 
         # go to offset - start of "%!PS"
         self.fp.seek(offset)
 
-        self.mode = "RGB"
-        self._size = None
+        self._mode = "RGB"
+
+        # When reading header comments, the first comment is used.
+        # When reading trailer comments, the last comment is used.
+        bounding_box: list[int] | None = None
+        imagedata_size: tuple[int, int] | None = None
 
         byte_arr = bytearray(255)
         bytes_mv = memoryview(byte_arr)
         bytes_read = 0
-        reading_comments = True
+        reading_header_comments = True
+        reading_trailer_comments = False
+        trailer_reached = False
 
-        def check_required_header_comments():
+        def check_required_header_comments() -> None:
+            """
+            The EPS specification requires that some headers exist.
+            This should be checked when the header comments formally end,
+            when image data starts, or when the file ends, whichever comes first.
+            """
             if "PS-Adobe" not in self.info:
                 msg = 'EPS header missing "%!PS-Adobe" comment'
                 raise SyntaxError(msg)
@@ -243,11 +219,39 @@ class EpsImageFile(ImageFile.ImageFile):
                 msg = 'EPS header missing "%%BoundingBox" comment'
                 raise SyntaxError(msg)
 
+        def read_comment(s: str) -> bool:
+            nonlocal bounding_box, reading_trailer_comments
+            try:
+                m = split.match(s)
+            except re.error as e:
+                msg = "not an EPS file"
+                raise SyntaxError(msg) from e
+
+            if not m:
+                return False
+
+            k, v = m.group(1, 2)
+            self.info[k] = v
+            if k == "BoundingBox":
+                if v == "(atend)":
+                    reading_trailer_comments = True
+                elif not bounding_box or (trailer_reached and reading_trailer_comments):
+                    try:
+                        # Note: The DSC spec says that BoundingBox
+                        # fields should be integers, but some drivers
+                        # put floating point values there anyway.
+                        bounding_box = [int(float(i)) for i in v.split()]
+                    except Exception:
+                        pass
+            return True
+
         while True:
             byte = self.fp.read(1)
             if byte == b"":
                 # if we didn't read a byte we must be at the end of the file
                 if bytes_read == 0:
+                    if reading_header_comments:
+                        check_required_header_comments()
                     break
             elif byte in b"\r\n":
                 # if we read a line ending character, ignore it and parse what
@@ -265,9 +269,9 @@ class EpsImageFile(ImageFile.ImageFile):
                         msg = "not an EPS file"
                         raise SyntaxError(msg)
                     else:
-                        if reading_comments:
+                        if reading_header_comments:
                             check_required_header_comments()
-                            reading_comments = False
+                            reading_header_comments = False
                         # reset bytes_read so we can keep reading
                         # data until the end of the line
                         bytes_read = 0
@@ -275,7 +279,7 @@ class EpsImageFile(ImageFile.ImageFile):
                 bytes_read += 1
                 continue
 
-            if reading_comments:
+            if reading_header_comments:
                 # Load EPS header
 
                 # if this line doesn't start with a "%",
@@ -283,33 +287,11 @@ class EpsImageFile(ImageFile.ImageFile):
                 # then we've reached the end of the header/comments
                 if byte_arr[0] != ord("%") or bytes_mv[:13] == b"%%EndComments":
                     check_required_header_comments()
-                    reading_comments = False
+                    reading_header_comments = False
                     continue
 
                 s = str(bytes_mv[:bytes_read], "latin-1")
-
-                try:
-                    m = split.match(s)
-                except re.error as e:
-                    msg = "not an EPS file"
-                    raise SyntaxError(msg) from e
-
-                if m:
-                    k, v = m.group(1, 2)
-                    self.info[k] = v
-                    if k == "BoundingBox":
-                        try:
-                            # Note: The DSC spec says that BoundingBox
-                            # fields should be integers, but some drivers
-                            # put floating point values there anyway.
-                            box = [int(float(i)) for i in v.split()]
-                            self._size = box[2] - box[0], box[3] - box[1]
-                            self.tile = [
-                                ("eps", (0, 0) + self.size, offset, (length, box))
-                            ]
-                        except Exception:
-                            pass
-                else:
+                if not read_comment(s):
                     m = field.match(s)
                     if m:
                         k = m.group(1)
@@ -328,6 +310,12 @@ class EpsImageFile(ImageFile.ImageFile):
                 # Check for an "ImageData" descriptor
                 # https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#50577413_pgfId-1035096
 
+                # If we've already read an "ImageData" descriptor,
+                # don't read another one.
+                if imagedata_size:
+                    bytes_read = 0
+                    continue
+
                 # Values:
                 # columns
                 # rows
@@ -339,32 +327,50 @@ class EpsImageFile(ImageFile.ImageFile):
                 # data start identifier (the image data follows after a single line
                 #   consisting only of this quoted value)
                 image_data_values = byte_arr[11:bytes_read].split(None, 7)
-                columns, rows, bit_depth, mode_id = [
+                columns, rows, bit_depth, mode_id = (
                     int(value) for value in image_data_values[:4]
-                ]
+                )
 
                 if bit_depth == 1:
-                    self.mode = "1"
+                    self._mode = "1"
                 elif bit_depth == 8:
                     try:
-                        self.mode = self.mode_map[mode_id]
+                        self._mode = self.mode_map[mode_id]
                     except ValueError:
                         break
                 else:
                     break
 
-                self._size = columns, rows
-                return
-
+                # Parse the columns and rows after checking the bit depth and mode
+                # in case the bit depth and/or mode are invalid.
+                imagedata_size = columns, rows
+            elif bytes_mv[:5] == b"%%EOF":
+                break
+            elif trailer_reached and reading_trailer_comments:
+                # Load EPS trailer
+                s = str(bytes_mv[:bytes_read], "latin-1")
+                read_comment(s)
+            elif bytes_mv[:9] == b"%%Trailer":
+                trailer_reached = True
             bytes_read = 0
 
-        check_required_header_comments()
-
-        if not self._size:
+        # A "BoundingBox" is always required,
+        # even if an "ImageData" descriptor size exists.
+        if not bounding_box:
             msg = "cannot determine EPS bounding box"
             raise OSError(msg)
 
-    def _find_offset(self, fp):
+        # An "ImageData" size takes precedence over the "BoundingBox".
+        self._size = imagedata_size or (
+            bounding_box[2] - bounding_box[0],
+            bounding_box[3] - bounding_box[1],
+        )
+
+        self.tile = [
+            ImageFile._Tile("eps", (0, 0) + self.size, offset, (length, bounding_box))
+        ]
+
+    def _find_offset(self, fp: IO[bytes]) -> tuple[int, int]:
         s = fp.read(4)
 
         if s == b"%!PS":
@@ -387,16 +393,18 @@ class EpsImageFile(ImageFile.ImageFile):
 
         return length, offset
 
-    def load(self, scale=1, transparency=False):
+    def load(
+        self, scale: int = 1, transparency: bool = False
+    ) -> Image.core.PixelAccess | None:
         # Load EPS via Ghostscript
         if self.tile:
             self.im = Ghostscript(self.tile, self.size, self.fp, scale, transparency)
-            self.mode = self.im.mode
+            self._mode = self.im.mode
             self._size = self.im.size
             self.tile = []
         return Image.Image.load(self)
 
-    def load_seek(self, *args, **kwargs):
+    def load_seek(self, pos: int) -> None:
         # we can't incrementally load, so force ImageFile.parser to
         # use our custom load method by defining this method.
         pass
@@ -405,7 +413,7 @@ class EpsImageFile(ImageFile.ImageFile):
 # --------------------------------------------------------------------
 
 
-def _save(im, fp, filename, eps=1):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes, eps: int = 1) -> None:
     """EPS Writer for the Python Imaging Library."""
 
     # make sure image data is available
@@ -446,7 +454,7 @@ def _save(im, fp, filename, eps=1):
     if hasattr(fp, "flush"):
         fp.flush()
 
-    ImageFile._save(im, fp, [("eps", (0, 0) + im.size, 0, None)])
+    ImageFile._save(im, fp, [ImageFile._Tile("eps", (0, 0) + im.size, 0, None)])
 
     fp.write(b"\n%%%%EndBinary\n")
     fp.write(b"grestore end\n")
diff --git a/src/PIL/ExifTags.py b/src/PIL/ExifTags.py
index 2347c6d4c..39b4aa552 100644
--- a/src/PIL/ExifTags.py
+++ b/src/PIL/ExifTags.py
@@ -13,6 +13,7 @@
 This module provides constants and clear-text names for various
 well-known EXIF tags.
 """
+from __future__ import annotations
 
 from enum import IntEnum
 
@@ -345,7 +346,7 @@ class Interop(IntEnum):
     InteropVersion = 2
     RelatedImageFileFormat = 4096
     RelatedImageWidth = 4097
-    RleatedImageHeight = 4098
+    RelatedImageHeight = 4098
 
 
 class IFD(IntEnum):
diff --git a/src/PIL/FitsImagePlugin.py b/src/PIL/FitsImagePlugin.py
index 1359aeb12..6bbd2641a 100644
--- a/src/PIL/FitsImagePlugin.py
+++ b/src/PIL/FitsImagePlugin.py
@@ -8,13 +8,15 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
+import gzip
 import math
 
 from . import Image, ImageFile
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:6] == b"SIMPLE"
 
 
@@ -22,16 +24,36 @@ class FitsImageFile(ImageFile.ImageFile):
     format = "FITS"
     format_description = "FITS"
 
-    def _open(self):
-        headers = {}
+    def _open(self) -> None:
+        assert self.fp is not None
+
+        headers: dict[bytes, bytes] = {}
+        header_in_progress = False
+        decoder_name = ""
         while True:
             header = self.fp.read(80)
             if not header:
                 msg = "Truncated FITS file"
                 raise OSError(msg)
             keyword = header[:8].strip()
-            if keyword == b"END":
+            if keyword in (b"SIMPLE", b"XTENSION"):
+                header_in_progress = True
+            elif headers and not header_in_progress:
+                # This is now a data unit
                 break
+            elif keyword == b"END":
+                # Seek to the end of the header unit
+                self.fp.seek(math.ceil(self.fp.tell() / 2880) * 2880)
+                if not decoder_name:
+                    decoder_name, offset, args = self._parse_headers(headers)
+
+                header_in_progress = False
+                continue
+
+            if decoder_name:
+                # Keep going to read past the headers
+                continue
+
             value = header[8:].split(b"/")[0].strip()
             if value.startswith(b"="):
                 value = value[1:].strip()
@@ -40,34 +62,91 @@ class FitsImageFile(ImageFile.ImageFile):
                 raise SyntaxError(msg)
             headers[keyword] = value
 
-        naxis = int(headers[b"NAXIS"])
-        if naxis == 0:
+        if not decoder_name:
             msg = "No image data"
             raise ValueError(msg)
-        elif naxis == 1:
-            self._size = 1, int(headers[b"NAXIS1"])
+
+        offset += self.fp.tell() - 80
+        self.tile = [ImageFile._Tile(decoder_name, (0, 0) + self.size, offset, args)]
+
+    def _get_size(
+        self, headers: dict[bytes, bytes], prefix: bytes
+    ) -> tuple[int, int] | None:
+        naxis = int(headers[prefix + b"NAXIS"])
+        if naxis == 0:
+            return None
+
+        if naxis == 1:
+            return 1, int(headers[prefix + b"NAXIS1"])
         else:
-            self._size = int(headers[b"NAXIS1"]), int(headers[b"NAXIS2"])
+            return int(headers[prefix + b"NAXIS1"]), int(headers[prefix + b"NAXIS2"])
 
-        number_of_bits = int(headers[b"BITPIX"])
+    def _parse_headers(
+        self, headers: dict[bytes, bytes]
+    ) -> tuple[str, int, tuple[str | int, ...]]:
+        prefix = b""
+        decoder_name = "raw"
+        offset = 0
+        if (
+            headers.get(b"XTENSION") == b"'BINTABLE'"
+            and headers.get(b"ZIMAGE") == b"T"
+            and headers[b"ZCMPTYPE"] == b"'GZIP_1  '"
+        ):
+            no_prefix_size = self._get_size(headers, prefix) or (0, 0)
+            number_of_bits = int(headers[b"BITPIX"])
+            offset = no_prefix_size[0] * no_prefix_size[1] * (number_of_bits // 8)
+
+            prefix = b"Z"
+            decoder_name = "fits_gzip"
+
+        size = self._get_size(headers, prefix)
+        if not size:
+            return "", 0, ()
+
+        self._size = size
+
+        number_of_bits = int(headers[prefix + b"BITPIX"])
         if number_of_bits == 8:
-            self.mode = "L"
+            self._mode = "L"
         elif number_of_bits == 16:
-            self.mode = "I"
-            # rawmode = "I;16S"
+            self._mode = "I;16"
         elif number_of_bits == 32:
-            self.mode = "I"
+            self._mode = "I"
         elif number_of_bits in (-32, -64):
-            self.mode = "F"
-            # rawmode = "F" if number_of_bits == -32 else "F;64F"
+            self._mode = "F"
 
-        offset = math.ceil(self.fp.tell() / 2880) * 2880
-        self.tile = [("raw", (0, 0) + self.size, offset, (self.mode, 0, -1))]
+        args: tuple[str | int, ...]
+        if decoder_name == "raw":
+            args = (self.mode, 0, -1)
+        else:
+            args = (number_of_bits,)
+        return decoder_name, offset, args
+
+
+class FitsGzipDecoder(ImageFile.PyDecoder):
+    _pulls_fd = True
+
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
+        assert self.fd is not None
+        value = gzip.decompress(self.fd.read())
+
+        rows = []
+        offset = 0
+        number_of_bits = min(self.args[0] // 8, 4)
+        for y in range(self.state.ysize):
+            row = bytearray()
+            for x in range(self.state.xsize):
+                row += value[offset + (4 - number_of_bits) : offset + 4]
+                offset += 4
+            rows.append(row)
+        self.set_as_raw(bytes([pixel for row in rows[::-1] for pixel in row]))
+        return -1, 0
 
 
 # --------------------------------------------------------------------
 # Registry
 
 Image.register_open(FitsImageFile.format, FitsImageFile, _accept)
+Image.register_decoder("fits_gzip", FitsGzipDecoder)
 
 Image.register_extensions(FitsImageFile.format, [".fit", ".fits"])
diff --git a/src/PIL/FliImagePlugin.py b/src/PIL/FliImagePlugin.py
index f4e89a03e..666390be9 100644
--- a/src/PIL/FliImagePlugin.py
+++ b/src/PIL/FliImagePlugin.py
@@ -14,6 +14,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import os
 
@@ -26,7 +27,7 @@ from ._binary import o8
 # decoder
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return (
         len(prefix) >= 6
         and i16(prefix, 4) in [0xAF11, 0xAF12]
@@ -44,7 +45,7 @@ class FliImageFile(ImageFile.ImageFile):
     format_description = "Autodesk FLI/FLC Animation"
     _close_exclusive_fp_after_loading = False
 
-    def _open(self):
+    def _open(self) -> None:
         # HEAD
         s = self.fp.read(128)
         if not (_accept(s) and s[20:22] == b"\x00\x00"):
@@ -56,7 +57,7 @@ class FliImageFile(ImageFile.ImageFile):
         self.is_animated = self.n_frames > 1
 
         # image characteristics
-        self.mode = "P"
+        self._mode = "P"
         self._size = i16(s, 8), i16(s, 10)
 
         # animation speed
@@ -76,12 +77,13 @@ class FliImageFile(ImageFile.ImageFile):
         if i16(s, 4) == 0xF100:
             # prefix chunk; ignore it
             self.__offset = self.__offset + i32(s)
+            self.fp.seek(self.__offset)
             s = self.fp.read(16)
 
         if i16(s, 4) == 0xF1FA:
             # look for palette chunk
             number_of_subchunks = i16(s, 6)
-            chunk_size = None
+            chunk_size: int | None = None
             for _ in range(number_of_subchunks):
                 if chunk_size is not None:
                     self.fp.seek(chunk_size - 6, os.SEEK_CUR)
@@ -94,8 +96,9 @@ class FliImageFile(ImageFile.ImageFile):
                 if not chunk_size:
                     break
 
-        palette = [o8(r) + o8(g) + o8(b) for (r, g, b) in palette]
-        self.palette = ImagePalette.raw("RGB", b"".join(palette))
+        self.palette = ImagePalette.raw(
+            "RGB", b"".join(o8(r) + o8(g) + o8(b) for (r, g, b) in palette)
+        )
 
         # set things up to decode first frame
         self.__frame = -1
@@ -103,7 +106,7 @@ class FliImageFile(ImageFile.ImageFile):
         self.__rewind = self.fp.tell()
         self.seek(0)
 
-    def _palette(self, palette, shift):
+    def _palette(self, palette: list[tuple[int, int, int]], shift: int) -> None:
         # load palette
 
         i = 0
@@ -121,7 +124,7 @@ class FliImageFile(ImageFile.ImageFile):
                 palette[i] = (r, g, b)
                 i += 1
 
-    def seek(self, frame):
+    def seek(self, frame: int) -> None:
         if not self._seek_check(frame):
             return
         if frame < self.__frame:
@@ -130,7 +133,7 @@ class FliImageFile(ImageFile.ImageFile):
         for f in range(self.__frame + 1, frame + 1):
             self._seek(f)
 
-    def _seek(self, frame):
+    def _seek(self, frame: int) -> None:
         if frame == 0:
             self.__frame = -1
             self._fp.seek(self.__rewind)
@@ -150,16 +153,17 @@ class FliImageFile(ImageFile.ImageFile):
 
         s = self.fp.read(4)
         if not s:
-            raise EOFError
+            msg = "missing frame size"
+            raise EOFError(msg)
 
         framesize = i32(s)
 
         self.decodermaxblock = framesize
-        self.tile = [("fli", (0, 0) + self.size, self.__offset, None)]
+        self.tile = [ImageFile._Tile("fli", (0, 0) + self.size, self.__offset, None)]
 
         self.__offset += framesize
 
-    def tell(self):
+    def tell(self) -> int:
         return self.__frame
 
 
diff --git a/src/PIL/FontFile.py b/src/PIL/FontFile.py
index 5ec0a6632..1e0c1c166 100644
--- a/src/PIL/FontFile.py
+++ b/src/PIL/FontFile.py
@@ -13,16 +13,19 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 import os
+from typing import BinaryIO
 
 from . import Image, _binary
 
 WIDTH = 800
 
 
-def puti16(fp, values):
+def puti16(
+    fp: BinaryIO, values: tuple[int, int, int, int, int, int, int, int, int, int]
+) -> None:
     """Write network order (big-endian) 16-bit sequence"""
     for v in values:
         if v < 0:
@@ -33,16 +36,32 @@ def puti16(fp, values):
 class FontFile:
     """Base class for raster font file handlers."""
 
-    bitmap = None
+    bitmap: Image.Image | None = None
 
-    def __init__(self):
-        self.info = {}
-        self.glyph = [None] * 256
+    def __init__(self) -> None:
+        self.info: dict[bytes, bytes | int] = {}
+        self.glyph: list[
+            tuple[
+                tuple[int, int],
+                tuple[int, int, int, int],
+                tuple[int, int, int, int],
+                Image.Image,
+            ]
+            | None
+        ] = [None] * 256
 
-    def __getitem__(self, ix):
+    def __getitem__(self, ix: int) -> (
+        tuple[
+            tuple[int, int],
+            tuple[int, int, int, int],
+            tuple[int, int, int, int],
+            Image.Image,
+        ]
+        | None
+    ):
         return self.glyph[ix]
 
-    def compile(self):
+    def compile(self) -> None:
         """Create metrics and bitmap"""
 
         if self.bitmap:
@@ -51,7 +70,7 @@ class FontFile:
         # create bitmap large enough to hold all data
         h = w = maxwidth = 0
         lines = 1
-        for glyph in self:
+        for glyph in self.glyph:
             if glyph:
                 d, dst, src, im = glyph
                 h = max(h, src[3] - src[1])
@@ -65,20 +84,22 @@ class FontFile:
         ysize = lines * h
 
         if xsize == 0 and ysize == 0:
-            return ""
+            return
 
         self.ysize = h
 
         # paste glyphs into bitmap
         self.bitmap = Image.new("1", (xsize, ysize))
-        self.metrics = [None] * 256
+        self.metrics: list[
+            tuple[tuple[int, int], tuple[int, int, int, int], tuple[int, int, int, int]]
+            | None
+        ] = [None] * 256
         x = y = 0
         for i in range(256):
             glyph = self[i]
             if glyph:
                 d, dst, src, im = glyph
                 xx = src[2] - src[0]
-                # yy = src[3] - src[1]
                 x0, y0 = x, y
                 x = x + xx
                 if x > WIDTH:
@@ -89,12 +110,15 @@ class FontFile:
                 self.bitmap.paste(im.crop(src), s)
                 self.metrics[i] = d, dst, s
 
-    def save(self, filename):
+    def save(self, filename: str) -> None:
         """Save font"""
 
         self.compile()
 
         # font data
+        if not self.bitmap:
+            msg = "No bitmap created"
+            raise ValueError(msg)
         self.bitmap.save(os.path.splitext(filename)[0] + ".pbm", "PNG")
 
         # font metrics
@@ -105,6 +129,6 @@ class FontFile:
             for id in range(256):
                 m = self.metrics[id]
                 if not m:
-                    puti16(fp, [0] * 10)
+                    puti16(fp, (0,) * 10)
                 else:
                     puti16(fp, m[0] + m[1] + m[2])
diff --git a/src/PIL/FpxImagePlugin.py b/src/PIL/FpxImagePlugin.py
index 2450c67e9..8fef51076 100644
--- a/src/PIL/FpxImagePlugin.py
+++ b/src/PIL/FpxImagePlugin.py
@@ -14,6 +14,8 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
 import olefile
 
 from . import Image, ImageFile
@@ -39,7 +41,7 @@ MODES = {
 # --------------------------------------------------------------------
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:8] == olefile.MAGIC
 
 
@@ -51,7 +53,7 @@ class FpxImageFile(ImageFile.ImageFile):
     format = "FPX"
     format_description = "FlashPix"
 
-    def _open(self):
+    def _open(self) -> None:
         #
         # read the OLE directory and see if this is a likely
         # to be a FlashPix file
@@ -62,13 +64,14 @@ class FpxImageFile(ImageFile.ImageFile):
             msg = "not an FPX file; invalid OLE file"
             raise SyntaxError(msg) from e
 
-        if self.ole.root.clsid != "56616700-C154-11CE-8553-00AA00A1F95B":
+        root = self.ole.root
+        if not root or root.clsid != "56616700-C154-11CE-8553-00AA00A1F95B":
             msg = "not an FPX file; bad root CLSID"
             raise SyntaxError(msg)
 
         self._open_index(1)
 
-    def _open_index(self, index=1):
+    def _open_index(self, index: int = 1) -> None:
         #
         # get the Image Contents Property Set
 
@@ -78,12 +81,14 @@ class FpxImageFile(ImageFile.ImageFile):
 
         # size (highest resolution)
 
+        assert isinstance(prop[0x1000002], int)
+        assert isinstance(prop[0x1000003], int)
         self._size = prop[0x1000002], prop[0x1000003]
 
         size = max(self.size)
         i = 1
         while size > 64:
-            size = size / 2
+            size = size // 2
             i += 1
         self.maxid = i - 1
 
@@ -97,16 +102,14 @@ class FpxImageFile(ImageFile.ImageFile):
 
         s = prop[0x2000002 | id]
 
-        colors = []
-        bands = i32(s, 4)
-        if bands > 4:
+        if not isinstance(s, bytes) or (bands := i32(s, 4)) > 4:
             msg = "Invalid number of bands"
             raise OSError(msg)
-        for i in range(bands):
-            # note: for now, we ignore the "uncalibrated" flag
-            colors.append(i32(s, 8 + i * 4) & 0x7FFFFFFF)
 
-        self.mode, self.rawmode = MODES[tuple(colors)]
+        # note: for now, we ignore the "uncalibrated" flag
+        colors = tuple(i32(s, 8 + i * 4) & 0x7FFFFFFF for i in range(bands))
+
+        self._mode, self.rawmode = MODES[colors]
 
         # load JPEG tables, if any
         self.jpeg = {}
@@ -117,7 +120,7 @@ class FpxImageFile(ImageFile.ImageFile):
 
         self._open_subimage(1, self.maxid)
 
-    def _open_subimage(self, index=1, subimage=0):
+    def _open_subimage(self, index: int = 1, subimage: int = 0) -> None:
         #
         # setup tile descriptors for a given subimage
 
@@ -163,7 +166,7 @@ class FpxImageFile(ImageFile.ImageFile):
 
             if compression == 0:
                 self.tile.append(
-                    (
+                    ImageFile._Tile(
                         "raw",
                         (x, y, x1, y1),
                         i32(s, i) + 28,
@@ -174,7 +177,7 @@ class FpxImageFile(ImageFile.ImageFile):
             elif compression == 1:
                 # FIXME: the fill decoder is not implemented
                 self.tile.append(
-                    (
+                    ImageFile._Tile(
                         "fill",
                         (x, y, x1, y1),
                         i32(s, i) + 28,
@@ -202,7 +205,7 @@ class FpxImageFile(ImageFile.ImageFile):
                     jpegmode = rawmode
 
                 self.tile.append(
-                    (
+                    ImageFile._Tile(
                         "jpeg",
                         (x, y, x1, y1),
                         i32(s, i) + 28,
@@ -227,19 +230,20 @@ class FpxImageFile(ImageFile.ImageFile):
                     break  # isn't really required
 
         self.stream = stream
+        self._fp = self.fp
         self.fp = None
 
-    def load(self):
+    def load(self) -> Image.core.PixelAccess | None:
         if not self.fp:
             self.fp = self.ole.openstream(self.stream[:2] + ["Subimage 0000 Data"])
 
         return ImageFile.ImageFile.load(self)
 
-    def close(self):
+    def close(self) -> None:
         self.ole.close()
         super().close()
 
-    def __exit__(self, *args):
+    def __exit__(self, *args: object) -> None:
         self.ole.close()
         super().__exit__()
 
diff --git a/src/PIL/FtexImagePlugin.py b/src/PIL/FtexImagePlugin.py
index c46b2f28b..ddb469bc3 100644
--- a/src/PIL/FtexImagePlugin.py
+++ b/src/PIL/FtexImagePlugin.py
@@ -51,6 +51,8 @@ bytes for that mipmap level.
 Note: All data is stored in little-Endian (Intel) byte order.
 """
 
+from __future__ import annotations
+
 import struct
 from enum import IntEnum
 from io import BytesIO
@@ -69,7 +71,7 @@ class FtexImageFile(ImageFile.ImageFile):
     format = "FTEX"
     format_description = "Texture File Format (IW2:EOC)"
 
-    def _open(self):
+    def _open(self) -> None:
         if not _accept(self.fp.read(4)):
             msg = "not an FTEX file"
             raise SyntaxError(msg)
@@ -77,7 +79,7 @@ class FtexImageFile(ImageFile.ImageFile):
         self._size = struct.unpack("<2i", self.fp.read(8))
         mipmap_count, format_count = struct.unpack("<2i", self.fp.read(8))
 
-        self.mode = "RGB"
+        self._mode = "RGB"
 
         # Only support single-format files.
         # I don't know of any multi-format file.
@@ -90,10 +92,10 @@ class FtexImageFile(ImageFile.ImageFile):
         data = self.fp.read(mipmap_size)
 
         if format == Format.DXT1:
-            self.mode = "RGBA"
-            self.tile = [("bcn", (0, 0) + self.size, 0, 1)]
+            self._mode = "RGBA"
+            self.tile = [ImageFile._Tile("bcn", (0, 0) + self.size, 0, (1,))]
         elif format == Format.UNCOMPRESSED:
-            self.tile = [("raw", (0, 0) + self.size, 0, ("RGB", 0, 1))]
+            self.tile = [ImageFile._Tile("raw", (0, 0) + self.size, 0, ("RGB", 0, 1))]
         else:
             msg = f"Invalid texture compression format: {repr(format)}"
             raise ValueError(msg)
@@ -101,11 +103,11 @@ class FtexImageFile(ImageFile.ImageFile):
         self.fp.close()
         self.fp = BytesIO(data)
 
-    def load_seek(self, pos):
+    def load_seek(self, pos: int) -> None:
         pass
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] == MAGIC
 
 
diff --git a/src/PIL/GbrImagePlugin.py b/src/PIL/GbrImagePlugin.py
index 994a6e8eb..f319d7e84 100644
--- a/src/PIL/GbrImagePlugin.py
+++ b/src/PIL/GbrImagePlugin.py
@@ -23,12 +23,13 @@
 # Version 2 files are saved by GIMP v2.8 (at least)
 # Version 3 files have a format specifier of 18 for 16bit floats in
 #   the color depth field. This is currently unsupported by Pillow.
+from __future__ import annotations
 
 from . import Image, ImageFile
 from ._binary import i32be as i32
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return len(prefix) >= 8 and i32(prefix, 0) >= 20 and i32(prefix, 4) in (1, 2)
 
 
@@ -40,7 +41,7 @@ class GbrImageFile(ImageFile.ImageFile):
     format = "GBR"
     format_description = "GIMP brush file"
 
-    def _open(self):
+    def _open(self) -> None:
         header_size = i32(self.fp.read(4))
         if header_size < 20:
             msg = "not a GIMP brush"
@@ -73,9 +74,9 @@ class GbrImageFile(ImageFile.ImageFile):
         comment = self.fp.read(comment_length)[:-1]
 
         if color_depth == 1:
-            self.mode = "L"
+            self._mode = "L"
         else:
-            self.mode = "RGBA"
+            self._mode = "RGBA"
 
         self._size = width, height
 
@@ -87,8 +88,8 @@ class GbrImageFile(ImageFile.ImageFile):
         # Data is an uncompressed block of w * h * bytes/pixel
         self._data_size = width * height * color_depth
 
-    def load(self):
-        if not self.im:
+    def load(self) -> Image.core.PixelAccess | None:
+        if self._im is None:
             self.im = Image.core.new(self.mode, self.size)
             self.frombytes(self.fp.read(self._data_size))
         return Image.Image.load(self)
diff --git a/src/PIL/GdImageFile.py b/src/PIL/GdImageFile.py
index bafc43a19..f1b4969f2 100644
--- a/src/PIL/GdImageFile.py
+++ b/src/PIL/GdImageFile.py
@@ -25,11 +25,14 @@
     implementation is provided for convenience and demonstrational
     purposes only.
 """
+from __future__ import annotations
 
+from typing import IO
 
 from . import ImageFile, ImagePalette, UnidentifiedImageError
 from ._binary import i16be as i16
 from ._binary import i32be as i32
+from ._typing import StrOrBytesPath
 
 
 class GdImageFile(ImageFile.ImageFile):
@@ -43,15 +46,17 @@ class GdImageFile(ImageFile.ImageFile):
     format = "GD"
     format_description = "GD uncompressed images"
 
-    def _open(self):
+    def _open(self) -> None:
         # Header
+        assert self.fp is not None
+
         s = self.fp.read(1037)
 
         if i16(s) not in [65534, 65535]:
             msg = "Not a valid GD 2.x .gd file"
             raise SyntaxError(msg)
 
-        self.mode = "L"  # FIXME: "P"
+        self._mode = "L"  # FIXME: "P"
         self._size = i16(s, 2), i16(s, 4)
 
         true_color = s[6]
@@ -67,7 +72,7 @@ class GdImageFile(ImageFile.ImageFile):
         )
 
         self.tile = [
-            (
+            ImageFile._Tile(
                 "raw",
                 (0, 0) + self.size,
                 7 + true_color_offset + 4 + 256 * 4,
@@ -76,7 +81,7 @@ class GdImageFile(ImageFile.ImageFile):
         ]
 
 
-def open(fp, mode="r"):
+def open(fp: StrOrBytesPath | IO[bytes], mode: str = "r") -> GdImageFile:
     """
     Load texture from a GD image file.
 
diff --git a/src/PIL/GifImagePlugin.py b/src/PIL/GifImagePlugin.py
index 2f92e9467..a7c4f8b2c 100644
--- a/src/PIL/GifImagePlugin.py
+++ b/src/PIL/GifImagePlugin.py
@@ -23,18 +23,33 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import itertools
 import math
 import os
 import subprocess
 from enum import IntEnum
+from functools import cached_property
+from typing import IO, TYPE_CHECKING, Any, Literal, NamedTuple, Union
 
-from . import Image, ImageChops, ImageFile, ImagePalette, ImageSequence
+from . import (
+    Image,
+    ImageChops,
+    ImageFile,
+    ImageMath,
+    ImageOps,
+    ImagePalette,
+    ImageSequence,
+)
 from ._binary import i16le as i16
 from ._binary import o8
 from ._binary import o16le as o16
 
+if TYPE_CHECKING:
+    from . import _imaging
+    from ._typing import Buffer
+
 
 class LoadingStrategy(IntEnum):
     """.. versionadded:: 9.1.0"""
@@ -51,7 +66,7 @@ LOADING_STRATEGY = LoadingStrategy.RGB_AFTER_FIRST
 # Identify/read GIF files
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:6] in [b"GIF87a", b"GIF89a"]
 
 
@@ -67,19 +82,19 @@ class GifImageFile(ImageFile.ImageFile):
 
     global_palette = None
 
-    def data(self):
+    def data(self) -> bytes | None:
         s = self.fp.read(1)
         if s and s[0]:
             return self.fp.read(s[0])
         return None
 
-    def _is_palette_needed(self, p):
+    def _is_palette_needed(self, p: bytes) -> bool:
         for i in range(0, len(p), 3):
             if not (i // 3 == p[i] == p[i + 1] == p[i + 2]):
                 return True
         return False
 
-    def _open(self):
+    def _open(self) -> None:
         # Screen
         s = self.fp.read(13)
         if not _accept(s):
@@ -88,7 +103,6 @@ class GifImageFile(ImageFile.ImageFile):
 
         self.info["version"] = s[:6]
         self._size = i16(s, 6), i16(s, 8)
-        self.tile = []
         flags = s[10]
         bits = (flags & 7) + 1
 
@@ -103,12 +117,11 @@ class GifImageFile(ImageFile.ImageFile):
 
         self._fp = self.fp  # FIXME: hack
         self.__rewind = self.fp.tell()
-        self._n_frames = None
-        self._is_animated = None
+        self._n_frames: int | None = None
         self._seek(0)  # get ready to read first frame
 
     @property
-    def n_frames(self):
+    def n_frames(self) -> int:
         if self._n_frames is None:
             current = self.tell()
             try:
@@ -119,30 +132,29 @@ class GifImageFile(ImageFile.ImageFile):
             self.seek(current)
         return self._n_frames
 
-    @property
-    def is_animated(self):
-        if self._is_animated is None:
-            if self._n_frames is not None:
-                self._is_animated = self._n_frames != 1
-            else:
-                current = self.tell()
-                if current:
-                    self._is_animated = True
-                else:
-                    try:
-                        self._seek(1, False)
-                        self._is_animated = True
-                    except EOFError:
-                        self._is_animated = False
+    @cached_property
+    def is_animated(self) -> bool:
+        if self._n_frames is not None:
+            return self._n_frames != 1
 
-                    self.seek(current)
-        return self._is_animated
+        current = self.tell()
+        if current:
+            return True
 
-    def seek(self, frame):
+        try:
+            self._seek(1, False)
+            is_animated = True
+        except EOFError:
+            is_animated = False
+
+        self.seek(current)
+        return is_animated
+
+    def seek(self, frame: int) -> None:
         if not self._seek_check(frame):
             return
         if frame < self.__frame:
-            self.im = None
+            self._im = None
             self._seek(0)
 
         last_frame = self.__frame
@@ -154,11 +166,11 @@ class GifImageFile(ImageFile.ImageFile):
                 msg = "no more images in GIF file"
                 raise EOFError(msg) from e
 
-    def _seek(self, frame, update_image=True):
+    def _seek(self, frame: int, update_image: bool = True) -> None:
         if frame == 0:
             # rewind
             self.__offset = 0
-            self.dispose = None
+            self.dispose: _imaging.ImagingCore | None = None
             self.__frame = -1
             self._fp.seek(self.__rewind)
             self.disposal_method = 0
@@ -183,11 +195,12 @@ class GifImageFile(ImageFile.ImageFile):
 
         s = self.fp.read(1)
         if not s or s == b";":
-            raise EOFError
+            msg = "no more images in GIF file"
+            raise EOFError(msg)
 
-        palette = None
+        palette: ImagePalette.ImagePalette | Literal[False] | None = None
 
-        info = {}
+        info: dict[str, Any] = {}
         frame_transparency = None
         interlace = None
         frame_dispose_extent = None
@@ -203,7 +216,7 @@ class GifImageFile(ImageFile.ImageFile):
                 #
                 s = self.fp.read(1)
                 block = self.data()
-                if s[0] == 249:
+                if s[0] == 249 and block is not None:
                     #
                     # graphic control extension
                     #
@@ -239,14 +252,14 @@ class GifImageFile(ImageFile.ImageFile):
                         info["comment"] = comment
                     s = None
                     continue
-                elif s[0] == 255 and frame == 0:
+                elif s[0] == 255 and frame == 0 and block is not None:
                     #
                     # application extension
                     #
                     info["extension"] = block, self.fp.tell()
                     if block[:11] == b"NETSCAPE2.0":
                         block = self.data()
-                        if len(block) >= 3 and block[0] == 1:
+                        if block and len(block) >= 3 and block[0] == 1:
                             self.info["loop"] = i16(block, 1)
                 while self.data():
                     pass
@@ -280,15 +293,11 @@ class GifImageFile(ImageFile.ImageFile):
                 bits = self.fp.read(1)[0]
                 self.__offset = self.fp.tell()
                 break
-
-            else:
-                pass
-                # raise OSError, "illegal GIF tag `%x`" % s[0]
             s = None
 
         if interlace is None:
-            # self._fp = None
-            raise EOFError
+            msg = "image not found in GIF frame"
+            raise EOFError(msg)
 
         self.__frame = frame
         if not update_image:
@@ -304,85 +313,89 @@ class GifImageFile(ImageFile.ImageFile):
         if frame == 0:
             if self._frame_palette:
                 if LOADING_STRATEGY == LoadingStrategy.RGB_ALWAYS:
-                    self.mode = "RGBA" if frame_transparency is not None else "RGB"
+                    self._mode = "RGBA" if frame_transparency is not None else "RGB"
                 else:
-                    self.mode = "P"
+                    self._mode = "P"
             else:
-                self.mode = "L"
+                self._mode = "L"
 
-            if not palette and self.global_palette:
+            if palette:
+                self.palette = palette
+            elif self.global_palette:
                 from copy import copy
 
-                palette = copy(self.global_palette)
-            self.palette = palette
+                self.palette = copy(self.global_palette)
+            else:
+                self.palette = None
         else:
             if self.mode == "P":
                 if (
                     LOADING_STRATEGY != LoadingStrategy.RGB_AFTER_DIFFERENT_PALETTE_ONLY
                     or palette
                 ):
-                    self.pyaccess = None
                     if "transparency" in self.info:
                         self.im.putpalettealpha(self.info["transparency"], 0)
                         self.im = self.im.convert("RGBA", Image.Dither.FLOYDSTEINBERG)
-                        self.mode = "RGBA"
+                        self._mode = "RGBA"
                         del self.info["transparency"]
                     else:
-                        self.mode = "RGB"
+                        self._mode = "RGB"
                         self.im = self.im.convert("RGB", Image.Dither.FLOYDSTEINBERG)
 
-        def _rgb(color):
+        def _rgb(color: int) -> tuple[int, int, int]:
             if self._frame_palette:
-                color = tuple(self._frame_palette.palette[color * 3 : color * 3 + 3])
+                if color * 3 + 3 > len(self._frame_palette.palette):
+                    color = 0
+                return tuple(self._frame_palette.palette[color * 3 : color * 3 + 3])
             else:
-                color = (color, color, color)
-            return color
+                return (color, color, color)
 
+        self.dispose = None
         self.dispose_extent = frame_dispose_extent
-        try:
-            if self.disposal_method < 2:
-                # do not dispose or none specified
-                self.dispose = None
-            elif self.disposal_method == 2:
-                # replace with background colour
+        if self.dispose_extent and self.disposal_method >= 2:
+            try:
+                if self.disposal_method == 2:
+                    # replace with background colour
 
-                # only dispose the extent in this frame
-                x0, y0, x1, y1 = self.dispose_extent
-                dispose_size = (x1 - x0, y1 - y0)
-
-                Image._decompression_bomb_check(dispose_size)
-
-                # by convention, attempt to use transparency first
-                dispose_mode = "P"
-                color = self.info.get("transparency", frame_transparency)
-                if color is not None:
-                    if self.mode in ("RGB", "RGBA"):
-                        dispose_mode = "RGBA"
-                        color = _rgb(color) + (0,)
-                else:
-                    color = self.info.get("background", 0)
-                    if self.mode in ("RGB", "RGBA"):
-                        dispose_mode = "RGB"
-                        color = _rgb(color)
-                self.dispose = Image.core.fill(dispose_mode, dispose_size, color)
-            else:
-                # replace with previous contents
-                if self.im is not None:
                     # only dispose the extent in this frame
-                    self.dispose = self._crop(self.im, self.dispose_extent)
-                elif frame_transparency is not None:
                     x0, y0, x1, y1 = self.dispose_extent
                     dispose_size = (x1 - x0, y1 - y0)
 
                     Image._decompression_bomb_check(dispose_size)
+
+                    # by convention, attempt to use transparency first
                     dispose_mode = "P"
-                    color = frame_transparency
-                    if self.mode in ("RGB", "RGBA"):
-                        dispose_mode = "RGBA"
-                        color = _rgb(frame_transparency) + (0,)
+                    color = self.info.get("transparency", frame_transparency)
+                    if color is not None:
+                        if self.mode in ("RGB", "RGBA"):
+                            dispose_mode = "RGBA"
+                            color = _rgb(color) + (0,)
+                    else:
+                        color = self.info.get("background", 0)
+                        if self.mode in ("RGB", "RGBA"):
+                            dispose_mode = "RGB"
+                            color = _rgb(color)
                     self.dispose = Image.core.fill(dispose_mode, dispose_size, color)
-        except AttributeError:
-            pass
+                else:
+                    # replace with previous contents
+                    if self._im is not None:
+                        # only dispose the extent in this frame
+                        self.dispose = self._crop(self.im, self.dispose_extent)
+                    elif frame_transparency is not None:
+                        x0, y0, x1, y1 = self.dispose_extent
+                        dispose_size = (x1 - x0, y1 - y0)
+
+                        Image._decompression_bomb_check(dispose_size)
+                        dispose_mode = "P"
+                        color = frame_transparency
+                        if self.mode in ("RGB", "RGBA"):
+                            dispose_mode = "RGBA"
+                            color = _rgb(frame_transparency) + (0,)
+                        self.dispose = Image.core.fill(
+                            dispose_mode, dispose_size, color
+                        )
+            except AttributeError:
+                pass
 
         if interlace is not None:
             transparency = -1
@@ -393,7 +406,7 @@ class GifImageFile(ImageFile.ImageFile):
                 elif self.mode not in ("RGB", "RGBA"):
                     transparency = frame_transparency
             self.tile = [
-                (
+                ImageFile._Tile(
                     "gif",
                     (x0, y0, x1, y1),
                     self.__offset,
@@ -409,7 +422,7 @@ class GifImageFile(ImageFile.ImageFile):
             elif k in self.info:
                 del self.info[k]
 
-    def load_prepare(self):
+    def load_prepare(self) -> None:
         temp_mode = "P" if self._frame_palette else "L"
         self._prev_im = None
         if self.__frame == 0:
@@ -421,41 +434,61 @@ class GifImageFile(ImageFile.ImageFile):
             self._prev_im = self.im
             if self._frame_palette:
                 self.im = Image.core.fill("P", self.size, self._frame_transparency or 0)
-                self.im.putpalette(*self._frame_palette.getdata())
+                self.im.putpalette("RGB", *self._frame_palette.getdata())
             else:
-                self.im = None
-        self.mode = temp_mode
+                self._im = None
+        if not self._prev_im and self._im is not None and self.size != self.im.size:
+            expanded_im = Image.core.fill(self.im.mode, self.size)
+            if self._frame_palette:
+                expanded_im.putpalette("RGB", *self._frame_palette.getdata())
+            expanded_im.paste(self.im, (0, 0) + self.im.size)
+
+            self.im = expanded_im
+        self._mode = temp_mode
         self._frame_palette = None
 
         super().load_prepare()
 
-    def load_end(self):
+    def load_end(self) -> None:
         if self.__frame == 0:
             if self.mode == "P" and LOADING_STRATEGY == LoadingStrategy.RGB_ALWAYS:
                 if self._frame_transparency is not None:
                     self.im.putpalettealpha(self._frame_transparency, 0)
-                    self.mode = "RGBA"
+                    self._mode = "RGBA"
                 else:
-                    self.mode = "RGB"
+                    self._mode = "RGB"
                 self.im = self.im.convert(self.mode, Image.Dither.FLOYDSTEINBERG)
             return
         if not self._prev_im:
             return
+        if self.size != self._prev_im.size:
+            if self._frame_transparency is not None:
+                expanded_im = Image.core.fill("RGBA", self.size)
+            else:
+                expanded_im = Image.core.fill("P", self.size)
+                expanded_im.putpalette("RGB", "RGB", self.im.getpalette())
+                expanded_im = expanded_im.convert("RGB")
+            expanded_im.paste(self._prev_im, (0, 0) + self._prev_im.size)
+
+            self._prev_im = expanded_im
+            assert self._prev_im is not None
         if self._frame_transparency is not None:
             self.im.putpalettealpha(self._frame_transparency, 0)
             frame_im = self.im.convert("RGBA")
         else:
             frame_im = self.im.convert("RGB")
+
+        assert self.dispose_extent is not None
         frame_im = self._crop(frame_im, self.dispose_extent)
 
         self.im = self._prev_im
-        self.mode = self.im.mode
+        self._mode = self.im.mode
         if frame_im.mode == "RGBA":
             self.im.paste(frame_im, self.dispose_extent, frame_im)
         else:
             self.im.paste(frame_im, self.dispose_extent)
 
-    def tell(self):
+    def tell(self) -> int:
         return self.__frame
 
 
@@ -466,7 +499,7 @@ class GifImageFile(ImageFile.ImageFile):
 RAWMODE = {"1": "L", "L": "L", "P": "P"}
 
 
-def _normalize_mode(im):
+def _normalize_mode(im: Image.Image) -> Image.Image:
     """
     Takes an image (or frame), returns an image in a mode that is appropriate
     for saving in a Gif.
@@ -482,6 +515,7 @@ def _normalize_mode(im):
         return im
     if Image.getmodebase(im.mode) == "RGB":
         im = im.convert("P", palette=Image.Palette.ADAPTIVE)
+        assert im.palette is not None
         if im.palette.mode == "RGBA":
             for rgba in im.palette.colors:
                 if rgba[3] == 0:
@@ -491,7 +525,12 @@ def _normalize_mode(im):
     return im.convert("L")
 
 
-def _normalize_palette(im, palette, info):
+_Palette = Union[bytes, bytearray, list[int], ImagePalette.ImagePalette]
+
+
+def _normalize_palette(
+    im: Image.Image, palette: _Palette | None, info: dict[str, Any]
+) -> Image.Image:
     """
     Normalizes the palette for image.
       - Sets the palette to the incoming palette, if provided.
@@ -513,14 +552,18 @@ def _normalize_palette(im, palette, info):
 
     if im.mode == "P":
         if not source_palette:
-            source_palette = im.im.getpalette("RGB")[:768]
+            im_palette = im.getpalette(None)
+            assert im_palette is not None
+            source_palette = bytearray(im_palette)
     else:  # L-mode
         if not source_palette:
             source_palette = bytearray(i // 3 for i in range(768))
         im.palette = ImagePalette.ImagePalette("RGB", palette=source_palette)
+    assert source_palette is not None
 
     if palette:
-        used_palette_colors = []
+        used_palette_colors: list[int | None] = []
+        assert im.palette is not None
         for i in range(0, len(source_palette), 3):
             source_color = tuple(source_palette[i : i + 3])
             index = im.palette.colors.get(source_color)
@@ -533,20 +576,38 @@ def _normalize_palette(im, palette, info):
                     if j not in used_palette_colors:
                         used_palette_colors[i] = j
                         break
-        im = im.remap_palette(used_palette_colors)
+        dest_map: list[int] = []
+        for index in used_palette_colors:
+            assert index is not None
+            dest_map.append(index)
+        im = im.remap_palette(dest_map)
     else:
-        used_palette_colors = _get_optimize(im, info)
-        if used_palette_colors is not None:
-            return im.remap_palette(used_palette_colors, source_palette)
+        optimized_palette_colors = _get_optimize(im, info)
+        if optimized_palette_colors is not None:
+            im = im.remap_palette(optimized_palette_colors, source_palette)
+            if "transparency" in info:
+                try:
+                    info["transparency"] = optimized_palette_colors.index(
+                        info["transparency"]
+                    )
+                except ValueError:
+                    del info["transparency"]
+            return im
 
+    assert im.palette is not None
     im.palette.palette = source_palette
     return im
 
 
-def _write_single_frame(im, fp, palette):
+def _write_single_frame(
+    im: Image.Image,
+    fp: IO[bytes],
+    palette: _Palette | None,
+) -> None:
     im_out = _normalize_mode(im)
     for k, v in im_out.info.items():
-        im.encoderinfo.setdefault(k, v)
+        if isinstance(k, str):
+            im.encoderinfo.setdefault(k, v)
     im_out = _normalize_palette(im_out, palette, im.encoderinfo)
 
     for s in _get_global_header(im_out, im.encoderinfo):
@@ -559,26 +620,40 @@ def _write_single_frame(im, fp, palette):
     _write_local_header(fp, im, (0, 0), flags)
 
     im_out.encoderconfig = (8, get_interlace(im))
-    ImageFile._save(im_out, fp, [("gif", (0, 0) + im.size, 0, RAWMODE[im_out.mode])])
+    ImageFile._save(
+        im_out, fp, [ImageFile._Tile("gif", (0, 0) + im.size, 0, RAWMODE[im_out.mode])]
+    )
 
     fp.write(b"\0")  # end of image data
 
 
-def _getbbox(base_im, im_frame):
-    if _get_palette_bytes(im_frame) == _get_palette_bytes(base_im):
-        delta = ImageChops.subtract_modulo(im_frame, base_im)
-    else:
-        delta = ImageChops.subtract_modulo(
-            im_frame.convert("RGB"), base_im.convert("RGB")
-        )
-    return delta.getbbox()
+def _getbbox(
+    base_im: Image.Image, im_frame: Image.Image
+) -> tuple[Image.Image, tuple[int, int, int, int] | None]:
+    palette_bytes = [
+        bytes(im.palette.palette) if im.palette else b"" for im in (base_im, im_frame)
+    ]
+    if palette_bytes[0] != palette_bytes[1]:
+        im_frame = im_frame.convert("RGBA")
+        base_im = base_im.convert("RGBA")
+    delta = ImageChops.subtract_modulo(im_frame, base_im)
+    return delta, delta.getbbox(alpha_only=False)
 
 
-def _write_multiple_frames(im, fp, palette):
+class _Frame(NamedTuple):
+    im: Image.Image
+    bbox: tuple[int, int, int, int] | None
+    encoderinfo: dict[str, Any]
+
+
+def _write_multiple_frames(
+    im: Image.Image, fp: IO[bytes], palette: _Palette | None
+) -> bool:
     duration = im.encoderinfo.get("duration")
     disposal = im.encoderinfo.get("disposal", im.info.get("disposal"))
 
-    im_frames = []
+    im_frames: list[_Frame] = []
+    previous_im: Image.Image | None = None
     frame_count = 0
     background_im = None
     for imSequence in itertools.chain([im], im.encoderinfo.get("append_images", [])):
@@ -589,12 +664,13 @@ def _write_multiple_frames(im, fp, palette):
                 for k, v in im_frame.info.items():
                     if k == "transparency":
                         continue
-                    im.encoderinfo.setdefault(k, v)
+                    if isinstance(k, str):
+                        im.encoderinfo.setdefault(k, v)
 
             encoderinfo = im.encoderinfo.copy()
-            im_frame = _normalize_palette(im_frame, palette, encoderinfo)
             if "transparency" in im_frame.info:
                 encoderinfo.setdefault("transparency", im_frame.info["transparency"])
+            im_frame = _normalize_palette(im_frame, palette, encoderinfo)
             if isinstance(duration, (list, tuple)):
                 encoderinfo["duration"] = duration[frame_count]
             elif duration is None and "duration" in im_frame.info:
@@ -603,63 +679,109 @@ def _write_multiple_frames(im, fp, palette):
                 encoderinfo["disposal"] = disposal[frame_count]
             frame_count += 1
 
-            if im_frames:
+            diff_frame = None
+            if im_frames and previous_im:
                 # delta frame
-                previous = im_frames[-1]
-                bbox = _getbbox(previous["im"], im_frame)
+                delta, bbox = _getbbox(previous_im, im_frame)
                 if not bbox:
                     # This frame is identical to the previous frame
                     if encoderinfo.get("duration"):
-                        previous["encoderinfo"]["duration"] += encoderinfo["duration"]
+                        im_frames[-1].encoderinfo["duration"] += encoderinfo["duration"]
                     continue
-                if encoderinfo.get("disposal") == 2:
+                if im_frames[-1].encoderinfo.get("disposal") == 2:
                     if background_im is None:
                         color = im.encoderinfo.get(
                             "transparency", im.info.get("transparency", (0, 0, 0))
                         )
                         background = _get_background(im_frame, color)
                         background_im = Image.new("P", im_frame.size, background)
-                        background_im.putpalette(im_frames[0]["im"].palette)
-                    bbox = _getbbox(background_im, im_frame)
+                        assert im_frames[0].im.palette is not None
+                        background_im.putpalette(im_frames[0].im.palette)
+                    bbox = _getbbox(background_im, im_frame)[1]
+                elif encoderinfo.get("optimize") and im_frame.mode != "1":
+                    if "transparency" not in encoderinfo:
+                        assert im_frame.palette is not None
+                        try:
+                            encoderinfo["transparency"] = (
+                                im_frame.palette._new_color_index(im_frame)
+                            )
+                        except ValueError:
+                            pass
+                    if "transparency" in encoderinfo:
+                        # When the delta is zero, fill the image with transparency
+                        diff_frame = im_frame.copy()
+                        fill = Image.new("P", delta.size, encoderinfo["transparency"])
+                        if delta.mode == "RGBA":
+                            r, g, b, a = delta.split()
+                            mask = ImageMath.lambda_eval(
+                                lambda args: args["convert"](
+                                    args["max"](
+                                        args["max"](
+                                            args["max"](args["r"], args["g"]), args["b"]
+                                        ),
+                                        args["a"],
+                                    )
+                                    * 255,
+                                    "1",
+                                ),
+                                r=r,
+                                g=g,
+                                b=b,
+                                a=a,
+                            )
+                        else:
+                            if delta.mode == "P":
+                                # Convert to L without considering palette
+                                delta_l = Image.new("L", delta.size)
+                                delta_l.putdata(delta.getdata())
+                                delta = delta_l
+                            mask = ImageMath.lambda_eval(
+                                lambda args: args["convert"](args["im"] * 255, "1"),
+                                im=delta,
+                            )
+                        diff_frame.paste(fill, mask=ImageOps.invert(mask))
             else:
                 bbox = None
-            im_frames.append({"im": im_frame, "bbox": bbox, "encoderinfo": encoderinfo})
+            previous_im = im_frame
+            im_frames.append(_Frame(diff_frame or im_frame, bbox, encoderinfo))
 
-    if len(im_frames) > 1:
-        for frame_data in im_frames:
-            im_frame = frame_data["im"]
-            if not frame_data["bbox"]:
-                # global header
-                for s in _get_global_header(im_frame, frame_data["encoderinfo"]):
-                    fp.write(s)
-                offset = (0, 0)
-            else:
-                # compress difference
-                if not palette:
-                    frame_data["encoderinfo"]["include_color_table"] = True
+    if len(im_frames) == 1:
+        if "duration" in im.encoderinfo:
+            # Since multiple frames will not be written, use the combined duration
+            im.encoderinfo["duration"] = im_frames[0].encoderinfo["duration"]
+        return False
 
-                im_frame = im_frame.crop(frame_data["bbox"])
-                offset = frame_data["bbox"][:2]
-            _write_frame_data(fp, im_frame, offset, frame_data["encoderinfo"])
-        return True
-    elif "duration" in im.encoderinfo and isinstance(
-        im.encoderinfo["duration"], (list, tuple)
-    ):
-        # Since multiple frames will not be written, add together the frame durations
-        im.encoderinfo["duration"] = sum(im.encoderinfo["duration"])
+    for frame_data in im_frames:
+        im_frame = frame_data.im
+        if not frame_data.bbox:
+            # global header
+            for s in _get_global_header(im_frame, frame_data.encoderinfo):
+                fp.write(s)
+            offset = (0, 0)
+        else:
+            # compress difference
+            if not palette:
+                frame_data.encoderinfo["include_color_table"] = True
+
+            im_frame = im_frame.crop(frame_data.bbox)
+            offset = frame_data.bbox[:2]
+        _write_frame_data(fp, im_frame, offset, frame_data.encoderinfo)
+    return True
 
 
-def _save_all(im, fp, filename):
+def _save_all(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     _save(im, fp, filename, save_all=True)
 
 
-def _save(im, fp, filename, save_all=False):
+def _save(
+    im: Image.Image, fp: IO[bytes], filename: str | bytes, save_all: bool = False
+) -> None:
     # header
     if "palette" in im.encoderinfo or "palette" in im.info:
         palette = im.encoderinfo.get("palette", im.info.get("palette"))
     else:
         palette = None
-        im.encoderinfo["optimize"] = im.encoderinfo.get("optimize", True)
+        im.encoderinfo.setdefault("optimize", True)
 
     if not save_all or not _write_multiple_frames(im, fp, palette):
         _write_single_frame(im, fp, palette)
@@ -670,7 +792,7 @@ def _save(im, fp, filename, save_all=False):
         fp.flush()
 
 
-def get_interlace(im):
+def get_interlace(im: Image.Image) -> int:
     interlace = im.encoderinfo.get("interlace", 1)
 
     # workaround for @PIL153
@@ -680,27 +802,13 @@ def get_interlace(im):
     return interlace
 
 
-def _write_local_header(fp, im, offset, flags):
-    transparent_color_exists = False
+def _write_local_header(
+    fp: IO[bytes], im: Image.Image, offset: tuple[int, int], flags: int
+) -> None:
     try:
-        if "transparency" in im.encoderinfo:
-            transparency = im.encoderinfo["transparency"]
-        else:
-            transparency = im.info["transparency"]
-        transparency = int(transparency)
-    except (KeyError, ValueError):
-        pass
-    else:
-        # optimize the block away if transparent color is not used
-        transparent_color_exists = True
-
-        used_palette_colors = _get_optimize(im, im.encoderinfo)
-        if used_palette_colors is not None:
-            # adjust the transparency index after optimize
-            try:
-                transparency = used_palette_colors.index(transparency)
-            except ValueError:
-                transparent_color_exists = False
+        transparency = im.encoderinfo["transparency"]
+    except KeyError:
+        transparency = None
 
     if "duration" in im.encoderinfo:
         duration = int(im.encoderinfo["duration"] / 10)
@@ -709,11 +817,9 @@ def _write_local_header(fp, im, offset, flags):
 
     disposal = int(im.encoderinfo.get("disposal", 0))
 
-    if transparent_color_exists or duration != 0 or disposal:
-        packed_flag = 1 if transparent_color_exists else 0
+    if transparency is not None or duration != 0 or disposal:
+        packed_flag = 1 if transparency is not None else 0
         packed_flag |= disposal << 2
-        if not transparent_color_exists:
-            transparency = 0
 
         fp.write(
             b"!"
@@ -721,7 +827,7 @@ def _write_local_header(fp, im, offset, flags):
             + o8(4)  # length
             + o8(packed_flag)  # packed fields
             + o16(duration)  # duration
-            + o8(transparency)  # transparency index
+            + o8(transparency or 0)  # transparency index
             + o8(0)
         )
 
@@ -746,7 +852,7 @@ def _write_local_header(fp, im, offset, flags):
     fp.write(o8(8))  # bits
 
 
-def _save_netpbm(im, fp, filename):
+def _save_netpbm(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     # Unused by default.
     # To use, uncomment the register_save call at the end of the file.
     #
@@ -777,6 +883,7 @@ def _save_netpbm(im, fp, filename):
                 )
 
                 # Allow ppmquant to receive SIGPIPE if ppmtogif exits
+                assert quant_proc.stdout is not None
                 quant_proc.stdout.close()
 
                 retcode = quant_proc.wait()
@@ -798,7 +905,7 @@ def _save_netpbm(im, fp, filename):
 _FORCE_OPTIMIZE = False
 
 
-def _get_optimize(im, info):
+def _get_optimize(im: Image.Image, info: dict[str, Any]) -> list[int] | None:
     """
     Palette optimization is a potentially expensive operation.
 
@@ -809,7 +916,7 @@ def _get_optimize(im, info):
     :param info: encoderinfo
     :returns: list of indexes of palette entries in use, or None
     """
-    if im.mode in ("P", "L") and info and info.get("optimize", 0):
+    if im.mode in ("P", "L") and info and info.get("optimize"):
         # Potentially expensive operation.
 
         # The palette saves 3 bytes per color not used, but palette
@@ -831,6 +938,7 @@ def _get_optimize(im, info):
             if optimise or max(used_palette_colors) >= len(used_palette_colors):
                 return used_palette_colors
 
+            assert im.palette is not None
             num_palette_colors = len(im.palette.palette) // Image.getmodebands(
                 im.palette.mode
             )
@@ -842,9 +950,10 @@ def _get_optimize(im, info):
                 and current_palette_size > 2
             ):
                 return used_palette_colors
+    return None
 
 
-def _get_color_table_size(palette_bytes):
+def _get_color_table_size(palette_bytes: bytes) -> int:
     # calculate the palette size for the header
     if not palette_bytes:
         return 0
@@ -854,7 +963,7 @@ def _get_color_table_size(palette_bytes):
         return math.ceil(math.log(len(palette_bytes) // 3, 2)) - 1
 
 
-def _get_header_palette(palette_bytes):
+def _get_header_palette(palette_bytes: bytes) -> bytes:
     """
     Returns the palette, null padded to the next power of 2 (*3) bytes
     suitable for direct inclusion in the GIF header
@@ -872,23 +981,33 @@ def _get_header_palette(palette_bytes):
     return palette_bytes
 
 
-def _get_palette_bytes(im):
+def _get_palette_bytes(im: Image.Image) -> bytes:
     """
     Gets the palette for inclusion in the gif header
 
     :param im: Image object
     :returns: Bytes, len<=768 suitable for inclusion in gif header
     """
-    return im.palette.palette if im.palette else b""
+    if not im.palette:
+        return b""
+
+    palette = bytes(im.palette.palette)
+    if im.palette.mode == "RGBA":
+        palette = b"".join(palette[i * 4 : i * 4 + 3] for i in range(len(palette) // 3))
+    return palette
 
 
-def _get_background(im, info_background):
+def _get_background(
+    im: Image.Image,
+    info_background: int | tuple[int, int, int] | tuple[int, int, int, int] | None,
+) -> int:
     background = 0
     if info_background:
         if isinstance(info_background, tuple):
             # WebPImagePlugin stores an RGBA value in info["background"]
             # So it must be converted to the same format as GifImagePlugin's
             # info["background"] - a global color table index
+            assert im.palette is not None
             try:
                 background = im.palette.getcolor(info_background, im)
             except ValueError as e:
@@ -905,7 +1024,7 @@ def _get_background(im, info_background):
     return background
 
 
-def _get_global_header(im, info):
+def _get_global_header(im: Image.Image, info: dict[str, Any]) -> list[bytes]:
     """Return a list of strings representing a GIF header"""
 
     # Header Block
@@ -916,7 +1035,7 @@ def _get_global_header(im, info):
         info
         and (
             "transparency" in info
-            or "loop" in info
+            or info.get("loop") is not None
             or info.get("duration")
             or info.get("comment")
         )
@@ -941,7 +1060,7 @@ def _get_global_header(im, info):
         # Global Color Table
         _get_header_palette(palette_bytes),
     ]
-    if "loop" in info:
+    if info.get("loop") is not None:
         header.append(
             b"!"
             + o8(255)  # extension intro
@@ -967,7 +1086,12 @@ def _get_global_header(im, info):
     return header
 
 
-def _write_frame_data(fp, im_frame, offset, params):
+def _write_frame_data(
+    fp: IO[bytes],
+    im_frame: Image.Image,
+    offset: tuple[int, int],
+    params: dict[str, Any],
+) -> None:
     try:
         im_frame.encoderinfo = params
 
@@ -975,7 +1099,9 @@ def _write_frame_data(fp, im_frame, offset, params):
         _write_local_header(fp, im_frame, offset, 0)
 
         ImageFile._save(
-            im_frame, fp, [("gif", (0, 0) + im_frame.size, 0, RAWMODE[im_frame.mode])]
+            im_frame,
+            fp,
+            [ImageFile._Tile("gif", (0, 0) + im_frame.size, 0, RAWMODE[im_frame.mode])],
         )
 
         fp.write(b"\0")  # end of image data
@@ -987,7 +1113,9 @@ def _write_frame_data(fp, im_frame, offset, params):
 # Legacy GIF utilities
 
 
-def getheader(im, palette=None, info=None):
+def getheader(
+    im: Image.Image, palette: _Palette | None = None, info: dict[str, Any] | None = None
+) -> tuple[list[bytes], list[int] | None]:
     """
     Legacy Method to get Gif data from image.
 
@@ -999,11 +1127,11 @@ def getheader(im, palette=None, info=None):
     :returns: tuple of(list of header items, optimized palette)
 
     """
-    used_palette_colors = _get_optimize(im, info)
-
     if info is None:
         info = {}
 
+    used_palette_colors = _get_optimize(im, info)
+
     if "background" not in info and "background" in im.info:
         info["background"] = im.info["background"]
 
@@ -1015,7 +1143,9 @@ def getheader(im, palette=None, info=None):
     return header, used_palette_colors
 
 
-def getdata(im, offset=(0, 0), **params):
+def getdata(
+    im: Image.Image, offset: tuple[int, int] = (0, 0), **params: Any
+) -> list[bytes]:
     """
     Legacy Method
 
@@ -1032,12 +1162,14 @@ def getdata(im, offset=(0, 0), **params):
     :returns: List of bytes containing GIF encoded frame data
 
     """
+    from io import BytesIO
 
-    class Collector:
+    class Collector(BytesIO):
         data = []
 
-        def write(self, data):
+        def write(self, data: Buffer) -> int:
             self.data.append(data)
+            return len(data)
 
     im.load()  # make sure raster data is available
 
diff --git a/src/PIL/GimpGradientFile.py b/src/PIL/GimpGradientFile.py
index 8e801be0b..220eac57e 100644
--- a/src/PIL/GimpGradientFile.py
+++ b/src/PIL/GimpGradientFile.py
@@ -18,9 +18,10 @@ Stuff to translate curve segments to palette values (derived from
 the corresponding code in GIMP, written by Federico Mena Quintero.
 See the GIMP distribution for more information.)
 """
-
+from __future__ import annotations
 
 from math import log, pi, sin, sqrt
+from typing import IO, Callable
 
 from ._binary import o8
 
@@ -28,7 +29,7 @@ EPSILON = 1e-10
 """"""  # Enable auto-doc for data member
 
 
-def linear(middle, pos):
+def linear(middle: float, pos: float) -> float:
     if pos <= middle:
         if middle < EPSILON:
             return 0.0
@@ -43,19 +44,19 @@ def linear(middle, pos):
             return 0.5 + 0.5 * pos / middle
 
 
-def curved(middle, pos):
+def curved(middle: float, pos: float) -> float:
     return pos ** (log(0.5) / log(max(middle, EPSILON)))
 
 
-def sine(middle, pos):
+def sine(middle: float, pos: float) -> float:
     return (sin((-pi / 2.0) + pi * linear(middle, pos)) + 1.0) / 2.0
 
 
-def sphere_increasing(middle, pos):
+def sphere_increasing(middle: float, pos: float) -> float:
     return sqrt(1.0 - (linear(middle, pos) - 1.0) ** 2)
 
 
-def sphere_decreasing(middle, pos):
+def sphere_decreasing(middle: float, pos: float) -> float:
     return 1.0 - sqrt(1.0 - linear(middle, pos) ** 2)
 
 
@@ -64,9 +65,22 @@ SEGMENTS = [linear, curved, sine, sphere_increasing, sphere_decreasing]
 
 
 class GradientFile:
-    gradient = None
+    gradient: (
+        list[
+            tuple[
+                float,
+                float,
+                float,
+                list[float],
+                list[float],
+                Callable[[float, float], float],
+            ]
+        ]
+        | None
+    ) = None
 
-    def getpalette(self, entries=256):
+    def getpalette(self, entries: int = 256) -> tuple[bytes, str]:
+        assert self.gradient is not None
         palette = []
 
         ix = 0
@@ -101,7 +115,7 @@ class GradientFile:
 class GimpGradientFile(GradientFile):
     """File handler for GIMP's gradient format."""
 
-    def __init__(self, fp):
+    def __init__(self, fp: IO[bytes]) -> None:
         if fp.readline()[:13] != b"GIMP Gradient":
             msg = "not a GIMP gradient file"
             raise SyntaxError(msg)
@@ -114,7 +128,7 @@ class GimpGradientFile(GradientFile):
 
         count = int(line)
 
-        gradient = []
+        self.gradient = []
 
         for i in range(count):
             s = fp.readline().split()
@@ -132,6 +146,4 @@ class GimpGradientFile(GradientFile):
                 msg = "cannot handle HSV colour space"
                 raise OSError(msg)
 
-            gradient.append((x0, x1, xm, rgb0, rgb1, segment))
-
-        self.gradient = gradient
+            self.gradient.append((x0, x1, xm, rgb0, rgb1, segment))
diff --git a/src/PIL/GimpPaletteFile.py b/src/PIL/GimpPaletteFile.py
index d38892894..4cad0ebee 100644
--- a/src/PIL/GimpPaletteFile.py
+++ b/src/PIL/GimpPaletteFile.py
@@ -13,8 +13,10 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import re
+from typing import IO
 
 from ._binary import o8
 
@@ -24,8 +26,8 @@ class GimpPaletteFile:
 
     rawmode = "RGB"
 
-    def __init__(self, fp):
-        self.palette = [o8(i) * 3 for i in range(256)]
+    def __init__(self, fp: IO[bytes]) -> None:
+        palette = [o8(i) * 3 for i in range(256)]
 
         if fp.readline()[:12] != b"GIMP Palette":
             msg = "not a GIMP palette file"
@@ -48,9 +50,9 @@ class GimpPaletteFile:
                 msg = "bad palette entry"
                 raise ValueError(msg)
 
-            self.palette[i] = o8(v[0]) + o8(v[1]) + o8(v[2])
+            palette[i] = o8(v[0]) + o8(v[1]) + o8(v[2])
 
-        self.palette = b"".join(self.palette)
+        self.palette = b"".join(palette)
 
-    def getpalette(self):
+    def getpalette(self) -> tuple[bytes, str]:
         return self.palette, self.rawmode
diff --git a/src/PIL/GribStubImagePlugin.py b/src/PIL/GribStubImagePlugin.py
index 8a799f19c..e9aa084b2 100644
--- a/src/PIL/GribStubImagePlugin.py
+++ b/src/PIL/GribStubImagePlugin.py
@@ -8,13 +8,16 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
+from typing import IO
 
 from . import Image, ImageFile
 
 _handler = None
 
 
-def register_handler(handler):
+def register_handler(handler: ImageFile.StubHandler | None) -> None:
     """
     Install application-specific GRIB image handler.
 
@@ -28,7 +31,7 @@ def register_handler(handler):
 # Image adapter
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] == b"GRIB" and prefix[7] == 1
 
 
@@ -36,7 +39,7 @@ class GribStubImageFile(ImageFile.StubImageFile):
     format = "GRIB"
     format_description = "GRIB"
 
-    def _open(self):
+    def _open(self) -> None:
         offset = self.fp.tell()
 
         if not _accept(self.fp.read(8)):
@@ -46,18 +49,18 @@ class GribStubImageFile(ImageFile.StubImageFile):
         self.fp.seek(offset)
 
         # make something up
-        self.mode = "F"
+        self._mode = "F"
         self._size = 1, 1
 
         loader = self._load()
         if loader:
             loader.open(self)
 
-    def _load(self):
+    def _load(self) -> ImageFile.StubHandler | None:
         return _handler
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if _handler is None or not hasattr(_handler, "save"):
         msg = "GRIB save handler not installed"
         raise OSError(msg)
diff --git a/src/PIL/Hdf5StubImagePlugin.py b/src/PIL/Hdf5StubImagePlugin.py
index bba05ed65..cc9e73deb 100644
--- a/src/PIL/Hdf5StubImagePlugin.py
+++ b/src/PIL/Hdf5StubImagePlugin.py
@@ -8,13 +8,16 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
+from typing import IO
 
 from . import Image, ImageFile
 
 _handler = None
 
 
-def register_handler(handler):
+def register_handler(handler: ImageFile.StubHandler | None) -> None:
     """
     Install application-specific HDF5 image handler.
 
@@ -28,7 +31,7 @@ def register_handler(handler):
 # Image adapter
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:8] == b"\x89HDF\r\n\x1a\n"
 
 
@@ -36,7 +39,7 @@ class HDF5StubImageFile(ImageFile.StubImageFile):
     format = "HDF5"
     format_description = "HDF5"
 
-    def _open(self):
+    def _open(self) -> None:
         offset = self.fp.tell()
 
         if not _accept(self.fp.read(8)):
@@ -46,18 +49,18 @@ class HDF5StubImageFile(ImageFile.StubImageFile):
         self.fp.seek(offset)
 
         # make something up
-        self.mode = "F"
+        self._mode = "F"
         self._size = 1, 1
 
         loader = self._load()
         if loader:
             loader.open(self)
 
-    def _load(self):
+    def _load(self) -> ImageFile.StubHandler | None:
         return _handler
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if _handler is None or not hasattr(_handler, "save"):
         msg = "HDF5 save handler not installed"
         raise OSError(msg)
diff --git a/src/PIL/IcnsImagePlugin.py b/src/PIL/IcnsImagePlugin.py
index 27cb89f73..9757b2b14 100644
--- a/src/PIL/IcnsImagePlugin.py
+++ b/src/PIL/IcnsImagePlugin.py
@@ -16,13 +16,16 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import io
 import os
 import struct
 import sys
+from typing import IO
 
 from . import Image, ImageFile, PngImagePlugin, features
+from ._deprecate import deprecate
 
 enable_jpeg2k = features.check_codec("jpg_2000")
 if enable_jpeg2k:
@@ -32,11 +35,13 @@ MAGIC = b"icns"
 HEADERSIZE = 8
 
 
-def nextheader(fobj):
+def nextheader(fobj: IO[bytes]) -> tuple[bytes, int]:
     return struct.unpack(">4sI", fobj.read(HEADERSIZE))
 
 
-def read_32t(fobj, start_length, size):
+def read_32t(
+    fobj: IO[bytes], start_length: tuple[int, int], size: tuple[int, int, int]
+) -> dict[str, Image.Image]:
     # The 128x128 icon seems to have an extra header for some reason.
     (start, length) = start_length
     fobj.seek(start)
@@ -47,7 +52,9 @@ def read_32t(fobj, start_length, size):
     return read_32(fobj, (start + 4, length - 4), size)
 
 
-def read_32(fobj, start_length, size):
+def read_32(
+    fobj: IO[bytes], start_length: tuple[int, int], size: tuple[int, int, int]
+) -> dict[str, Image.Image]:
     """
     Read a 32bit RGB icon resource.  Seems to be either uncompressed or
     an RLE packbits-like scheme.
@@ -70,14 +77,14 @@ def read_32(fobj, start_length, size):
                 byte = fobj.read(1)
                 if not byte:
                     break
-                byte = byte[0]
-                if byte & 0x80:
-                    blocksize = byte - 125
+                byte_int = byte[0]
+                if byte_int & 0x80:
+                    blocksize = byte_int - 125
                     byte = fobj.read(1)
                     for i in range(blocksize):
                         data.append(byte)
                 else:
-                    blocksize = byte + 1
+                    blocksize = byte_int + 1
                     data.append(fobj.read(blocksize))
                 bytesleft -= blocksize
                 if bytesleft <= 0:
@@ -90,7 +97,9 @@ def read_32(fobj, start_length, size):
     return {"RGB": im}
 
 
-def read_mk(fobj, start_length, size):
+def read_mk(
+    fobj: IO[bytes], start_length: tuple[int, int], size: tuple[int, int, int]
+) -> dict[str, Image.Image]:
     # Alpha masks seem to be uncompressed
     start = start_length[0]
     fobj.seek(start)
@@ -100,10 +109,14 @@ def read_mk(fobj, start_length, size):
     return {"A": band}
 
 
-def read_png_or_jpeg2000(fobj, start_length, size):
+def read_png_or_jpeg2000(
+    fobj: IO[bytes], start_length: tuple[int, int], size: tuple[int, int, int]
+) -> dict[str, Image.Image]:
     (start, length) = start_length
     fobj.seek(start)
     sig = fobj.read(12)
+
+    im: Image.Image
     if sig[:8] == b"\x89PNG\x0d\x0a\x1a\x0a":
         fobj.seek(start)
         im = PngImagePlugin.PngImageFile(fobj)
@@ -162,12 +175,12 @@ class IcnsFile:
         ],
     }
 
-    def __init__(self, fobj):
+    def __init__(self, fobj: IO[bytes]) -> None:
         """
         fobj is a file-like object as an icns resource
         """
         # signature : (start, length)
-        self.dct = dct = {}
+        self.dct = {}
         self.fobj = fobj
         sig, filesize = nextheader(fobj)
         if not _accept(sig):
@@ -181,11 +194,11 @@ class IcnsFile:
                 raise SyntaxError(msg)
             i += HEADERSIZE
             blocksize -= HEADERSIZE
-            dct[sig] = (i, blocksize)
+            self.dct[sig] = (i, blocksize)
             fobj.seek(blocksize, io.SEEK_CUR)
             i += blocksize
 
-    def itersizes(self):
+    def itersizes(self) -> list[tuple[int, int, int]]:
         sizes = []
         for size, fmts in self.SIZES.items():
             for fmt, reader in fmts:
@@ -194,14 +207,14 @@ class IcnsFile:
                     break
         return sizes
 
-    def bestsize(self):
+    def bestsize(self) -> tuple[int, int, int]:
         sizes = self.itersizes()
         if not sizes:
             msg = "No 32bit icon resources found"
             raise SyntaxError(msg)
         return max(sizes)
 
-    def dataforsize(self, size):
+    def dataforsize(self, size: tuple[int, int, int]) -> dict[str, Image.Image]:
         """
         Get an icon resource as {channel: array}.  Note that
         the arrays are bottom-up like windows bitmaps and will likely
@@ -214,18 +227,20 @@ class IcnsFile:
                 dct.update(reader(self.fobj, desc, size))
         return dct
 
-    def getimage(self, size=None):
+    def getimage(
+        self, size: tuple[int, int] | tuple[int, int, int] | None = None
+    ) -> Image.Image:
         if size is None:
             size = self.bestsize()
-        if len(size) == 2:
+        elif len(size) == 2:
             size = (size[0], size[1], 1)
         channels = self.dataforsize(size)
 
-        im = channels.get("RGBA", None)
+        im = channels.get("RGBA")
         if im:
             return im
 
-        im = channels.get("RGB").copy()
+        im = channels["RGB"].copy()
         try:
             im.putalpha(channels["A"])
         except KeyError:
@@ -251,9 +266,9 @@ class IcnsImageFile(ImageFile.ImageFile):
     format = "ICNS"
     format_description = "Mac OS icns resource"
 
-    def _open(self):
+    def _open(self) -> None:
         self.icns = IcnsFile(self.fp)
-        self.mode = "RGBA"
+        self._mode = "RGBA"
         self.info["sizes"] = self.icns.itersizes()
         self.best_size = self.icns.bestsize()
         self.size = (
@@ -261,40 +276,40 @@ class IcnsImageFile(ImageFile.ImageFile):
             self.best_size[1] * self.best_size[2],
         )
 
-    @property
-    def size(self):
+    @property  # type: ignore[override]
+    def size(self) -> tuple[int, int] | tuple[int, int, int]:
         return self._size
 
     @size.setter
-    def size(self, value):
-        info_size = value
-        if info_size not in self.info["sizes"] and len(info_size) == 2:
-            info_size = (info_size[0], info_size[1], 1)
-        if (
-            info_size not in self.info["sizes"]
-            and len(info_size) == 3
-            and info_size[2] == 1
-        ):
-            simple_sizes = [
-                (size[0] * size[2], size[1] * size[2]) for size in self.info["sizes"]
-            ]
-            if value in simple_sizes:
-                info_size = self.info["sizes"][simple_sizes.index(value)]
-        if info_size not in self.info["sizes"]:
-            msg = "This is not one of the allowed sizes of this image"
-            raise ValueError(msg)
-        self._size = value
+    def size(self, value: tuple[int, int] | tuple[int, int, int]) -> None:
+        if len(value) == 3:
+            deprecate("Setting size to (width, height, scale)", 12, "load(scale)")
+            if value in self.info["sizes"]:
+                self._size = value  # type: ignore[assignment]
+                return
+        else:
+            # Check that a matching size exists,
+            # or that there is a scale that would create a size that matches
+            for size in self.info["sizes"]:
+                simple_size = size[0] * size[2], size[1] * size[2]
+                scale = simple_size[0] // value[0]
+                if simple_size[1] / value[1] == scale:
+                    self._size = value
+                    return
+        msg = "This is not one of the allowed sizes of this image"
+        raise ValueError(msg)
 
-    def load(self):
-        if len(self.size) == 3:
-            self.best_size = self.size
-            self.size = (
-                self.best_size[0] * self.best_size[2],
-                self.best_size[1] * self.best_size[2],
-            )
+    def load(self, scale: int | None = None) -> Image.core.PixelAccess | None:
+        if scale is not None or len(self.size) == 3:
+            if scale is None and len(self.size) == 3:
+                scale = self.size[2]
+            assert scale is not None
+            width, height = self.size[:2]
+            self.size = width * scale, height * scale
+            self.best_size = width, height, scale
 
         px = Image.Image.load(self)
-        if self.im is not None and self.im.size == self.size:
+        if self._im is not None and self.im.size == self.size:
             # Already loaded
             return px
         self.load_prepare()
@@ -305,13 +320,13 @@ class IcnsImageFile(ImageFile.ImageFile):
         px = im.load()
 
         self.im = im.im
-        self.mode = im.mode
+        self._mode = im.mode
         self.size = im.size
 
         return px
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     """
     Saves the image as a series of PNG files,
     that are then combined into a .icns file.
@@ -345,35 +360,33 @@ def _save(im, fp, filename):
     entries = []
     for type, size in sizes.items():
         stream = size_streams[size]
-        entries.append(
-            {"type": type, "size": HEADERSIZE + len(stream), "stream": stream}
-        )
+        entries.append((type, HEADERSIZE + len(stream), stream))
 
     # Header
     fp.write(MAGIC)
     file_length = HEADERSIZE  # Header
     file_length += HEADERSIZE + 8 * len(entries)  # TOC
-    file_length += sum(entry["size"] for entry in entries)
+    file_length += sum(entry[1] for entry in entries)
     fp.write(struct.pack(">i", file_length))
 
     # TOC
     fp.write(b"TOC ")
     fp.write(struct.pack(">i", HEADERSIZE + len(entries) * HEADERSIZE))
     for entry in entries:
-        fp.write(entry["type"])
-        fp.write(struct.pack(">i", entry["size"]))
+        fp.write(entry[0])
+        fp.write(struct.pack(">i", entry[1]))
 
     # Data
     for entry in entries:
-        fp.write(entry["type"])
-        fp.write(struct.pack(">i", entry["size"]))
-        fp.write(entry["stream"])
+        fp.write(entry[0])
+        fp.write(struct.pack(">i", entry[1]))
+        fp.write(entry[2])
 
     if hasattr(fp, "flush"):
         fp.flush()
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] == MAGIC
 
 
@@ -391,8 +404,8 @@ if __name__ == "__main__":
     with open(sys.argv[1], "rb") as fp:
         imf = IcnsImageFile(fp)
         for size in imf.info["sizes"]:
-            imf.size = size
-            imf.save("out-%s-%s-%s.png" % size)
+            width, height, scale = imf.size = size
+            imf.save(f"out-{width}-{height}-{scale}.png")
         with Image.open(sys.argv[1]) as im:
             im.save("out.png")
         if sys.platform == "windows":
diff --git a/src/PIL/IcoImagePlugin.py b/src/PIL/IcoImagePlugin.py
index a188f8fdc..e879f1801 100644
--- a/src/PIL/IcoImagePlugin.py
+++ b/src/PIL/IcoImagePlugin.py
@@ -20,11 +20,12 @@
 # Icon format references:
 #   * https://en.wikipedia.org/wiki/ICO_(file_format)
 #   * https://msdn.microsoft.com/en-us/library/ms997538.aspx
-
+from __future__ import annotations
 
 import warnings
 from io import BytesIO
 from math import ceil, log
+from typing import IO, NamedTuple
 
 from . import BmpImagePlugin, Image, ImageFile, PngImagePlugin
 from ._binary import i16le as i16
@@ -39,7 +40,7 @@ from ._binary import o32le as o32
 _MAGIC = b"\0\0\1\0"
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     fp.write(_MAGIC)  # (2+2)
     bmp = im.encoderinfo.get("bitmap_format") == "bmp"
     sizes = im.encoderinfo.get(
@@ -96,7 +97,9 @@ def _save(im, fp, filename):
             if bits != 32:
                 and_mask = Image.new("1", size)
                 ImageFile._save(
-                    and_mask, image_io, [("raw", (0, 0) + size, 0, ("1", 0, -1))]
+                    and_mask,
+                    image_io,
+                    [ImageFile._Tile("raw", (0, 0) + size, 0, ("1", 0, -1))],
                 )
         else:
             frame.save(image_io, "png")
@@ -114,12 +117,26 @@ def _save(im, fp, filename):
         fp.seek(current)
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] == _MAGIC
 
 
+class IconHeader(NamedTuple):
+    width: int
+    height: int
+    nb_color: int
+    reserved: int
+    planes: int
+    bpp: int
+    size: int
+    offset: int
+    dim: tuple[int, int]
+    square: int
+    color_depth: int
+
+
 class IcoFile:
-    def __init__(self, buf):
+    def __init__(self, buf: IO[bytes]) -> None:
         """
         Parse image from file-like object containing ico file data
         """
@@ -140,73 +157,65 @@ class IcoFile:
         for i in range(self.nb_items):
             s = buf.read(16)
 
-            icon_header = {
-                "width": s[0],
-                "height": s[1],
-                "nb_color": s[2],  # No. of colors in image (0 if >=8bpp)
-                "reserved": s[3],
-                "planes": i16(s, 4),
-                "bpp": i16(s, 6),
-                "size": i32(s, 8),
-                "offset": i32(s, 12),
-            }
-
             # See Wikipedia
-            for j in ("width", "height"):
-                if not icon_header[j]:
-                    icon_header[j] = 256
+            width = s[0] or 256
+            height = s[1] or 256
 
-            # See Wikipedia notes about color depth.
-            # We need this just to differ images with equal sizes
-            icon_header["color_depth"] = (
-                icon_header["bpp"]
-                or (
-                    icon_header["nb_color"] != 0
-                    and ceil(log(icon_header["nb_color"], 2))
-                )
-                or 256
+            # No. of colors in image (0 if >=8bpp)
+            nb_color = s[2]
+            bpp = i16(s, 6)
+            icon_header = IconHeader(
+                width=width,
+                height=height,
+                nb_color=nb_color,
+                reserved=s[3],
+                planes=i16(s, 4),
+                bpp=i16(s, 6),
+                size=i32(s, 8),
+                offset=i32(s, 12),
+                dim=(width, height),
+                square=width * height,
+                # See Wikipedia notes about color depth.
+                # We need this just to differ images with equal sizes
+                color_depth=bpp or (nb_color != 0 and ceil(log(nb_color, 2))) or 256,
             )
 
-            icon_header["dim"] = (icon_header["width"], icon_header["height"])
-            icon_header["square"] = icon_header["width"] * icon_header["height"]
-
             self.entry.append(icon_header)
 
-        self.entry = sorted(self.entry, key=lambda x: x["color_depth"])
+        self.entry = sorted(self.entry, key=lambda x: x.color_depth)
         # ICO images are usually squares
-        # self.entry = sorted(self.entry, key=lambda x: x['width'])
-        self.entry = sorted(self.entry, key=lambda x: x["square"])
-        self.entry.reverse()
+        self.entry = sorted(self.entry, key=lambda x: x.square, reverse=True)
 
-    def sizes(self):
+    def sizes(self) -> set[tuple[int, int]]:
         """
-        Get a list of all available icon sizes and color depths.
+        Get a set of all available icon sizes and color depths.
         """
-        return {(h["width"], h["height"]) for h in self.entry}
+        return {(h.width, h.height) for h in self.entry}
 
-    def getentryindex(self, size, bpp=False):
+    def getentryindex(self, size: tuple[int, int], bpp: int | bool = False) -> int:
         for i, h in enumerate(self.entry):
-            if size == h["dim"] and (bpp is False or bpp == h["color_depth"]):
+            if size == h.dim and (bpp is False or bpp == h.color_depth):
                 return i
         return 0
 
-    def getimage(self, size, bpp=False):
+    def getimage(self, size: tuple[int, int], bpp: int | bool = False) -> Image.Image:
         """
         Get an image from the icon
         """
         return self.frame(self.getentryindex(size, bpp))
 
-    def frame(self, idx):
+    def frame(self, idx: int) -> Image.Image:
         """
         Get an image from frame idx
         """
 
         header = self.entry[idx]
 
-        self.buf.seek(header["offset"])
+        self.buf.seek(header.offset)
         data = self.buf.read(8)
-        self.buf.seek(header["offset"])
+        self.buf.seek(header.offset)
 
+        im: Image.Image
         if data[:8] == PngImagePlugin._MAGIC:
             # png frame
             im = PngImagePlugin.PngImageFile(self.buf)
@@ -219,11 +228,10 @@ class IcoFile:
             # change tile dimension to only encompass XOR image
             im._size = (im.size[0], int(im.size[1] / 2))
             d, e, o, a = im.tile[0]
-            im.tile[0] = d, (0, 0) + im.size, o, a
+            im.tile[0] = ImageFile._Tile(d, (0, 0) + im.size, o, a)
 
             # figure out where AND mask image starts
-            bpp = header["bpp"]
-            if 32 == bpp:
+            if header.bpp == 32:
                 # 32-bit color depth icon image allows semitransparent areas
                 # PIL's DIB format ignores transparency bits, recover them.
                 # The DIB is packed in BGRX byte order where X is the alpha
@@ -235,13 +243,19 @@ class IcoFile:
                 alpha_bytes = self.buf.read(im.size[0] * im.size[1] * 4)[3::4]
 
                 # convert to an 8bpp grayscale image
-                mask = Image.frombuffer(
-                    "L",  # 8bpp
-                    im.size,  # (w, h)
-                    alpha_bytes,  # source chars
-                    "raw",  # raw decoder
-                    ("L", 0, -1),  # 8bpp inverted, unpadded, reversed
-                )
+                try:
+                    mask = Image.frombuffer(
+                        "L",  # 8bpp
+                        im.size,  # (w, h)
+                        alpha_bytes,  # source chars
+                        "raw",  # raw decoder
+                        ("L", 0, -1),  # 8bpp inverted, unpadded, reversed
+                    )
+                except ValueError:
+                    if ImageFile.LOAD_TRUNCATED_IMAGES:
+                        mask = None
+                    else:
+                        raise
             else:
                 # get AND image from end of bitmap
                 w = im.size[0]
@@ -253,25 +267,32 @@ class IcoFile:
                 # padded row size * height / bits per char
 
                 total_bytes = int((w * im.size[1]) / 8)
-                and_mask_offset = header["offset"] + header["size"] - total_bytes
+                and_mask_offset = header.offset + header.size - total_bytes
 
                 self.buf.seek(and_mask_offset)
                 mask_data = self.buf.read(total_bytes)
 
                 # convert raw data to image
-                mask = Image.frombuffer(
-                    "1",  # 1 bpp
-                    im.size,  # (w, h)
-                    mask_data,  # source chars
-                    "raw",  # raw decoder
-                    ("1;I", int(w / 8), -1),  # 1bpp inverted, padded, reversed
-                )
+                try:
+                    mask = Image.frombuffer(
+                        "1",  # 1 bpp
+                        im.size,  # (w, h)
+                        mask_data,  # source chars
+                        "raw",  # raw decoder
+                        ("1;I", int(w / 8), -1),  # 1bpp inverted, padded, reversed
+                    )
+                except ValueError:
+                    if ImageFile.LOAD_TRUNCATED_IMAGES:
+                        mask = None
+                    else:
+                        raise
 
                 # now we have two images, im is XOR image and mask is AND image
 
             # apply mask image as alpha channel
-            im = im.convert("RGBA")
-            im.putalpha(mask)
+            if mask:
+                im = im.convert("RGBA")
+                im.putalpha(mask)
 
         return im
 
@@ -304,33 +325,34 @@ class IcoImageFile(ImageFile.ImageFile):
     format = "ICO"
     format_description = "Windows Icon"
 
-    def _open(self):
+    def _open(self) -> None:
         self.ico = IcoFile(self.fp)
         self.info["sizes"] = self.ico.sizes()
-        self.size = self.ico.entry[0]["dim"]
+        self.size = self.ico.entry[0].dim
         self.load()
 
     @property
-    def size(self):
+    def size(self) -> tuple[int, int]:
         return self._size
 
     @size.setter
-    def size(self, value):
+    def size(self, value: tuple[int, int]) -> None:
         if value not in self.info["sizes"]:
             msg = "This is not one of the allowed sizes of this image"
             raise ValueError(msg)
         self._size = value
 
-    def load(self):
-        if self.im is not None and self.im.size == self.size:
+    def load(self) -> Image.core.PixelAccess | None:
+        if self._im is not None and self.im.size == self.size:
             # Already loaded
             return Image.Image.load(self)
         im = self.ico.getimage(self.size)
         # if tile is PNG, it won't really be loaded yet
         im.load()
         self.im = im.im
-        self.pyaccess = None
-        self.mode = im.mode
+        self._mode = im.mode
+        if im.palette:
+            self.palette = im.palette
         if im.size != self.size:
             warnings.warn("Image was not the expected size")
 
@@ -340,8 +362,9 @@ class IcoImageFile(ImageFile.ImageFile):
             self.info["sizes"] = set(sizes)
 
             self.size = im.size
+        return None
 
-    def load_seek(self):
+    def load_seek(self, pos: int) -> None:
         # Flag the ImageFile.Parser so that it
         # just does all the decode at the end.
         pass
diff --git a/src/PIL/ImImagePlugin.py b/src/PIL/ImImagePlugin.py
index 746743f65..f9f47348c 100644
--- a/src/PIL/ImImagePlugin.py
+++ b/src/PIL/ImImagePlugin.py
@@ -24,10 +24,11 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 import os
 import re
+from typing import IO, Any
 
 from . import Image, ImageFile, ImagePalette
 
@@ -78,7 +79,7 @@ OPEN = {
     "LA image": ("LA", "LA;L"),
     "PA image": ("LA", "PA;L"),
     "RGBA image": ("RGBA", "RGBA;L"),
-    "RGBX image": ("RGBX", "RGBX;L"),
+    "RGBX image": ("RGB", "RGBX;L"),
     "CMYK image": ("CMYK", "CMYK;L"),
     "YCC image": ("YCbCr", "YCbCr;L"),
 }
@@ -93,8 +94,8 @@ for i in ["16", "16L", "16B"]:
 for i in ["32S"]:
     OPEN[f"L {i} image"] = ("I", f"I;{i}")
     OPEN[f"L*{i} image"] = ("I", f"I;{i}")
-for i in range(2, 33):
-    OPEN[f"L*{i} image"] = ("F", f"F;{i}")
+for j in range(2, 33):
+    OPEN[f"L*{j} image"] = ("F", f"F;{j}")
 
 
 # --------------------------------------------------------------------
@@ -103,7 +104,7 @@ for i in range(2, 33):
 split = re.compile(rb"^([A-Za-z][^:]*):[ \t]*(.*)[ \t]*$")
 
 
-def number(s):
+def number(s: Any) -> float:
     try:
         return int(s)
     except ValueError:
@@ -119,7 +120,7 @@ class ImImageFile(ImageFile.ImageFile):
     format_description = "IFUNC Image Memory"
     _close_exclusive_fp_after_loading = False
 
-    def _open(self):
+    def _open(self) -> None:
         # Quick rejection: if there's not an LF among the first
         # 100 bytes, this is (probably) not a text header.
 
@@ -196,7 +197,7 @@ class ImImageFile(ImageFile.ImageFile):
                     n += 1
 
             else:
-                msg = "Syntax error in IM header: " + s.decode("ascii", "replace")
+                msg = f"Syntax error in IM header: {s.decode('ascii', 'replace')}"
                 raise SyntaxError(msg)
 
         if not n:
@@ -205,7 +206,7 @@ class ImImageFile(ImageFile.ImageFile):
 
         # Basic attributes
         self._size = self.info[SIZE]
-        self.mode = self.info[MODE]
+        self._mode = self.info[MODE]
 
         # Skip forward to start of image data
         while s and s[:1] != b"\x1A":
@@ -231,9 +232,9 @@ class ImImageFile(ImageFile.ImageFile):
                         self.lut = list(palette[:256])
                 else:
                     if self.mode in ["L", "P"]:
-                        self.mode = self.rawmode = "P"
+                        self._mode = self.rawmode = "P"
                     elif self.mode in ["LA", "PA"]:
-                        self.mode = "PA"
+                        self._mode = "PA"
                         self.rawmode = "PA;L"
                     self.palette = ImagePalette.raw("RGB;L", palette)
             elif self.mode == "RGB":
@@ -252,7 +253,11 @@ class ImImageFile(ImageFile.ImageFile):
                 # use bit decoder (if necessary)
                 bits = int(self.rawmode[2:])
                 if bits not in [8, 16, 32]:
-                    self.tile = [("bit", (0, 0) + self.size, offs, (bits, 8, 3, 0, -1))]
+                    self.tile = [
+                        ImageFile._Tile(
+                            "bit", (0, 0) + self.size, offs, (bits, 8, 3, 0, -1)
+                        )
+                    ]
                     return
             except ValueError:
                 pass
@@ -262,23 +267,27 @@ class ImImageFile(ImageFile.ImageFile):
             # ever stumbled upon such a file ;-)
             size = self.size[0] * self.size[1]
             self.tile = [
-                ("raw", (0, 0) + self.size, offs, ("G", 0, -1)),
-                ("raw", (0, 0) + self.size, offs + size, ("R", 0, -1)),
-                ("raw", (0, 0) + self.size, offs + 2 * size, ("B", 0, -1)),
+                ImageFile._Tile("raw", (0, 0) + self.size, offs, ("G", 0, -1)),
+                ImageFile._Tile("raw", (0, 0) + self.size, offs + size, ("R", 0, -1)),
+                ImageFile._Tile(
+                    "raw", (0, 0) + self.size, offs + 2 * size, ("B", 0, -1)
+                ),
             ]
         else:
             # LabEye/IFUNC files
-            self.tile = [("raw", (0, 0) + self.size, offs, (self.rawmode, 0, -1))]
+            self.tile = [
+                ImageFile._Tile("raw", (0, 0) + self.size, offs, (self.rawmode, 0, -1))
+            ]
 
     @property
-    def n_frames(self):
+    def n_frames(self) -> int:
         return self.info[FRAMES]
 
     @property
-    def is_animated(self):
+    def is_animated(self) -> bool:
         return self.info[FRAMES] > 1
 
-    def seek(self, frame):
+    def seek(self, frame: int) -> None:
         if not self._seek_check(frame):
             return
 
@@ -294,9 +303,11 @@ class ImImageFile(ImageFile.ImageFile):
 
         self.fp = self._fp
 
-        self.tile = [("raw", (0, 0) + self.size, offs, (self.rawmode, 0, -1))]
+        self.tile = [
+            ImageFile._Tile("raw", (0, 0) + self.size, offs, (self.rawmode, 0, -1))
+        ]
 
-    def tell(self):
+    def tell(self) -> int:
         return self.frame
 
 
@@ -325,7 +336,7 @@ SAVE = {
 }
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     try:
         image_type, rawmode = SAVE[im.mode]
     except KeyError as e:
@@ -340,6 +351,8 @@ def _save(im, fp, filename):
         # or: SyntaxError("not an IM file")
         # 8 characters are used for "Name: " and "\r\n"
         # Keep just the filename, ditch the potentially overlong path
+        if isinstance(filename, bytes):
+            filename = filename.decode("ascii")
         name, ext = os.path.splitext(os.path.basename(filename))
         name = "".join([name[: 92 - len(ext)], ext])
 
@@ -357,7 +370,9 @@ def _save(im, fp, filename):
             palette += im_palette[colors * i : colors * (i + 1)]
             palette += b"\x00" * (256 - colors)
         fp.write(palette)  # 768 bytes
-    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, -1))])
+    ImageFile._save(
+        im, fp, [ImageFile._Tile("raw", (0, 0) + im.size, 0, (rawmode, 0, -1))]
+    )
 
 
 #
diff --git a/src/PIL/Image.py b/src/PIL/Image.py
index 97f3f4926..9b76ce8bd 100644
--- a/src/PIL/Image.py
+++ b/src/PIL/Image.py
@@ -24,6 +24,9 @@
 # See the README file for information on usage and redistribution.
 #
 
+from __future__ import annotations
+
+import abc
 import atexit
 import builtins
 import io
@@ -35,14 +38,17 @@ import struct
 import sys
 import tempfile
 import warnings
-from collections.abc import Callable, MutableMapping
+from collections.abc import Callable, Iterator, MutableMapping, Sequence
 from enum import IntEnum
-from pathlib import Path
-
-try:
-    import defusedxml.ElementTree as ElementTree
-except ImportError:
-    ElementTree = None
+from types import ModuleType
+from typing import (
+    IO,
+    TYPE_CHECKING,
+    Any,
+    Literal,
+    Protocol,
+    cast,
+)
 
 # VERSION was removed in Pillow 6.0.0.
 # PILLOW_VERSION was removed in Pillow 9.0.0.
@@ -56,8 +62,15 @@ from . import (
     _plugins,
 )
 from ._binary import i32le, o32be, o32le
+from ._deprecate import deprecate
 from ._util import DeferredError, is_path
 
+ElementTree: ModuleType | None
+try:
+    from defusedxml import ElementTree
+except ImportError:
+    ElementTree = None
+
 logger = logging.getLogger(__name__)
 
 
@@ -69,8 +82,10 @@ class DecompressionBombError(Exception):
     pass
 
 
+WARN_POSSIBLE_FORMATS: bool = False
+
 # Limit to around a quarter gigabyte for a 24-bit (3 bpp) image
-MAX_IMAGE_PIXELS = int(1024 * 1024 * 1024 // 4 // 3)
+MAX_IMAGE_PIXELS: int | None = int(1024 * 1024 * 1024 // 4 // 3)
 
 
 try:
@@ -90,7 +105,7 @@ try:
         raise ImportError(msg)
 
 except ImportError as v:
-    core = DeferredError(ImportError("The _imaging C module is not installed."))
+    core = DeferredError.new(ImportError("The _imaging C module is not installed."))
     # Explanations for ways that we know we might have an import error
     if str(v).startswith("Module use of python"):
         # The _imaging C module is present, but not compiled for
@@ -107,15 +122,7 @@ except ImportError as v:
     raise
 
 
-# works everywhere, win for pypy, not cpython
-USE_CFFI_ACCESS = hasattr(sys, "pypy_version_info")
-try:
-    import cffi
-except ImportError:
-    cffi = None
-
-
-def isImageType(t):
+def isImageType(t: Any) -> TypeGuard[Image]:
     """
     Checks if an object is an image object.
 
@@ -126,6 +133,7 @@ def isImageType(t):
     :param t: object to check if it's an image
     :returns: True if the object is an image
     """
+    deprecate("Image.isImageType(im)", 12, "isinstance(im, Image.Image)")
     return hasattr(t, "im")
 
 
@@ -210,14 +218,28 @@ if hasattr(core, "DEFAULT_STRATEGY"):
 # --------------------------------------------------------------------
 # Registries
 
-ID = []
-OPEN = {}
-MIME = {}
-SAVE = {}
-SAVE_ALL = {}
-EXTENSION = {}
-DECODERS = {}
-ENCODERS = {}
+if TYPE_CHECKING:
+    import mmap
+    from xml.etree.ElementTree import Element
+
+    from IPython.lib.pretty import PrettyPrinter
+
+    from . import ImageFile, ImageFilter, ImagePalette, ImageQt, TiffImagePlugin
+    from ._typing import CapsuleType, NumpyArray, StrOrBytesPath, TypeGuard
+ID: list[str] = []
+OPEN: dict[
+    str,
+    tuple[
+        Callable[[IO[bytes], str | bytes], ImageFile.ImageFile],
+        Callable[[bytes], bool | str] | None,
+    ],
+] = {}
+MIME: dict[str, str] = {}
+SAVE: dict[str, Callable[[Image, IO[bytes], str | bytes], None]] = {}
+SAVE_ALL: dict[str, Callable[[Image, IO[bytes], str | bytes], None]] = {}
+EXTENSION: dict[str, str] = {}
+DECODERS: dict[str, type[ImageFile.PyDecoder]] = {}
+ENCODERS: dict[str, type[ImageFile.PyEncoder]] = {}
 
 # --------------------------------------------------------------------
 # Modes
@@ -225,23 +247,44 @@ ENCODERS = {}
 _ENDIAN = "<" if sys.byteorder == "little" else ">"
 
 
-def _conv_type_shape(im):
+def _conv_type_shape(im: Image) -> tuple[tuple[int, ...], str]:
     m = ImageMode.getmode(im.mode)
-    shape = (im.height, im.width)
+    shape: tuple[int, ...] = (im.height, im.width)
     extra = len(m.bands)
     if extra != 1:
         shape += (extra,)
     return shape, m.typestr
 
 
-MODES = ["1", "CMYK", "F", "HSV", "I", "L", "LAB", "P", "RGB", "RGBA", "RGBX", "YCbCr"]
+MODES = [
+    "1",
+    "CMYK",
+    "F",
+    "HSV",
+    "I",
+    "I;16",
+    "I;16B",
+    "I;16L",
+    "I;16N",
+    "L",
+    "LA",
+    "La",
+    "LAB",
+    "P",
+    "PA",
+    "RGB",
+    "RGBA",
+    "RGBa",
+    "RGBX",
+    "YCbCr",
+]
 
 # raw modes that may be memory mapped.  NOTE: if you change this, you
 # may have to modify the stride calculation in map.c too!
 _MAPMODES = ("L", "P", "RGBX", "RGBA", "CMYK", "I;16", "I;16L", "I;16B")
 
 
-def getmodebase(mode):
+def getmodebase(mode: str) -> str:
     """
     Gets the "base" mode for given mode.  This function returns "L" for
     images that contain grayscale data, and "RGB" for images that
@@ -254,7 +297,7 @@ def getmodebase(mode):
     return ImageMode.getmode(mode).basemode
 
 
-def getmodetype(mode):
+def getmodetype(mode: str) -> str:
     """
     Gets the storage type mode.  Given a mode, this function returns a
     single-layer mode suitable for storing individual bands.
@@ -266,7 +309,7 @@ def getmodetype(mode):
     return ImageMode.getmode(mode).basetype
 
 
-def getmodebandnames(mode):
+def getmodebandnames(mode: str) -> tuple[str, ...]:
     """
     Gets a list of individual band names.  Given a mode, this function returns
     a tuple containing the names of individual bands (use
@@ -281,7 +324,7 @@ def getmodebandnames(mode):
     return ImageMode.getmode(mode).bands
 
 
-def getmodebands(mode):
+def getmodebands(mode: str) -> int:
     """
     Gets the number of individual bands for this mode.
 
@@ -298,8 +341,12 @@ def getmodebands(mode):
 _initialized = 0
 
 
-def preinit():
-    """Explicitly load standard file format drivers."""
+def preinit() -> None:
+    """
+    Explicitly loads BMP, GIF, JPEG, PPM and PPM file format drivers.
+
+    It is called when opening or saving images.
+    """
 
     global _initialized
     if _initialized >= 1:
@@ -335,42 +382,44 @@ def preinit():
         assert PngImagePlugin
     except ImportError:
         pass
-    # try:
-    #     import TiffImagePlugin
-    #     assert TiffImagePlugin
-    # except ImportError:
-    #     pass
 
     _initialized = 1
 
 
-def init():
+def init() -> bool:
     """
     Explicitly initializes the Python Imaging Library. This function
     loads all available file format drivers.
+
+    It is called when opening or saving images if :py:meth:`~preinit()` is
+    insufficient, and by :py:meth:`~PIL.features.pilinfo`.
     """
 
     global _initialized
     if _initialized >= 2:
-        return 0
+        return False
 
+    parent_name = __name__.rpartition(".")[0]
     for plugin in _plugins:
         try:
             logger.debug("Importing %s", plugin)
-            __import__(f"PIL.{plugin}", globals(), locals(), [])
+            __import__(f"{parent_name}.{plugin}", globals(), locals(), [])
         except ImportError as e:
             logger.debug("Image: failed to import %s: %s", plugin, e)
 
     if OPEN or SAVE:
         _initialized = 2
-        return 1
+        return True
+    return False
 
 
 # --------------------------------------------------------------------
 # Codec factories (used by tobytes/frombytes and ImageFile.load)
 
 
-def _getdecoder(mode, decoder_name, args, extra=()):
+def _getdecoder(
+    mode: str, decoder_name: str, args: Any, extra: tuple[Any, ...] = ()
+) -> core.ImagingDecoder | ImageFile.PyDecoder:
     # tweak arguments
     if args is None:
         args = ()
@@ -386,14 +435,16 @@ def _getdecoder(mode, decoder_name, args, extra=()):
 
     try:
         # get decoder
-        decoder = getattr(core, decoder_name + "_decoder")
+        decoder = getattr(core, f"{decoder_name}_decoder")
     except AttributeError as e:
         msg = f"decoder {decoder_name} not available"
         raise OSError(msg) from e
     return decoder(mode, *args + extra)
 
 
-def _getencoder(mode, encoder_name, args, extra=()):
+def _getencoder(
+    mode: str, encoder_name: str, args: Any, extra: tuple[Any, ...] = ()
+) -> core.ImagingEncoder | ImageFile.PyEncoder:
     # tweak arguments
     if args is None:
         args = ()
@@ -409,7 +460,7 @@ def _getencoder(mode, encoder_name, args, extra=()):
 
     try:
         # get encoder
-        encoder = getattr(core, encoder_name + "_encoder")
+        encoder = getattr(core, f"{encoder_name}_encoder")
     except AttributeError as e:
         msg = f"encoder {encoder_name} not available"
         raise OSError(msg) from e
@@ -420,49 +471,65 @@ def _getencoder(mode, encoder_name, args, extra=()):
 # Simple expression analyzer
 
 
-class _E:
-    def __init__(self, scale, offset):
+class ImagePointTransform:
+    """
+    Used with :py:meth:`~PIL.Image.Image.point` for single band images with more than
+    8 bits, this represents an affine transformation, where the value is multiplied by
+    ``scale`` and ``offset`` is added.
+    """
+
+    def __init__(self, scale: float, offset: float) -> None:
         self.scale = scale
         self.offset = offset
 
-    def __neg__(self):
-        return _E(-self.scale, -self.offset)
+    def __neg__(self) -> ImagePointTransform:
+        return ImagePointTransform(-self.scale, -self.offset)
 
-    def __add__(self, other):
-        if isinstance(other, _E):
-            return _E(self.scale + other.scale, self.offset + other.offset)
-        return _E(self.scale, self.offset + other)
+    def __add__(self, other: ImagePointTransform | float) -> ImagePointTransform:
+        if isinstance(other, ImagePointTransform):
+            return ImagePointTransform(
+                self.scale + other.scale, self.offset + other.offset
+            )
+        return ImagePointTransform(self.scale, self.offset + other)
 
     __radd__ = __add__
 
-    def __sub__(self, other):
+    def __sub__(self, other: ImagePointTransform | float) -> ImagePointTransform:
         return self + -other
 
-    def __rsub__(self, other):
+    def __rsub__(self, other: ImagePointTransform | float) -> ImagePointTransform:
         return other + -self
 
-    def __mul__(self, other):
-        if isinstance(other, _E):
+    def __mul__(self, other: ImagePointTransform | float) -> ImagePointTransform:
+        if isinstance(other, ImagePointTransform):
             return NotImplemented
-        return _E(self.scale * other, self.offset * other)
+        return ImagePointTransform(self.scale * other, self.offset * other)
 
     __rmul__ = __mul__
 
-    def __truediv__(self, other):
-        if isinstance(other, _E):
+    def __truediv__(self, other: ImagePointTransform | float) -> ImagePointTransform:
+        if isinstance(other, ImagePointTransform):
             return NotImplemented
-        return _E(self.scale / other, self.offset / other)
+        return ImagePointTransform(self.scale / other, self.offset / other)
 
 
-def _getscaleoffset(expr):
-    a = expr(_E(1, 0))
-    return (a.scale, a.offset) if isinstance(a, _E) else (0, a)
+def _getscaleoffset(
+    expr: Callable[[ImagePointTransform], ImagePointTransform | float]
+) -> tuple[float, float]:
+    a = expr(ImagePointTransform(1, 0))
+    return (a.scale, a.offset) if isinstance(a, ImagePointTransform) else (0, a)
 
 
 # --------------------------------------------------------------------
 # Implementation wrapper
 
 
+class SupportsGetData(Protocol):
+    def getdata(
+        self,
+    ) -> tuple[Transform, Sequence[int]]: ...
+
+
 class Image:
     """
     This class represents an image object.  To create
@@ -475,38 +542,52 @@ class Image:
     * :py:func:`~PIL.Image.frombytes`
     """
 
-    format = None
-    format_description = None
+    format: str | None = None
+    format_description: str | None = None
     _close_exclusive_fp_after_loading = True
 
-    def __init__(self):
+    def __init__(self) -> None:
         # FIXME: take "new" parameters / other image?
         # FIXME: turn mode and size into delegating properties?
-        self.im = None
-        self.mode = ""
+        self._im: core.ImagingCore | DeferredError | None = None
+        self._mode = ""
         self._size = (0, 0)
-        self.palette = None
-        self.info = {}
+        self.palette: ImagePalette.ImagePalette | None = None
+        self.info: dict[str | tuple[int, int], Any] = {}
         self.readonly = 0
-        self.pyaccess = None
-        self._exif = None
+        self._exif: Exif | None = None
 
     @property
-    def width(self):
+    def im(self) -> core.ImagingCore:
+        if isinstance(self._im, DeferredError):
+            raise self._im.ex
+        assert self._im is not None
+        return self._im
+
+    @im.setter
+    def im(self, im: core.ImagingCore) -> None:
+        self._im = im
+
+    @property
+    def width(self) -> int:
         return self.size[0]
 
     @property
-    def height(self):
+    def height(self) -> int:
         return self.size[1]
 
     @property
-    def size(self):
+    def size(self) -> tuple[int, int]:
         return self._size
 
-    def _new(self, im):
+    @property
+    def mode(self) -> str:
+        return self._mode
+
+    def _new(self, im: core.ImagingCore) -> Image:
         new = Image()
         new.im = im
-        new.mode = im.mode
+        new._mode = im.mode
         new._size = im.size
         if im.mode in ("P", "PA"):
             if self.palette:
@@ -522,17 +603,21 @@ class Image:
     def __enter__(self):
         return self
 
-    def __exit__(self, *args):
-        if hasattr(self, "fp") and getattr(self, "_exclusive_fp", False):
-            if getattr(self, "_fp", False):
-                if self._fp != self.fp:
-                    self._fp.close()
-                self._fp = DeferredError(ValueError("Operation on closed image"))
-            if self.fp:
-                self.fp.close()
-        self.fp = None
+    def _close_fp(self):
+        if getattr(self, "_fp", False):
+            if self._fp != self.fp:
+                self._fp.close()
+            self._fp = DeferredError(ValueError("Operation on closed image"))
+        if self.fp:
+            self.fp.close()
 
-    def close(self):
+    def __exit__(self, *args):
+        if hasattr(self, "fp"):
+            if getattr(self, "_exclusive_fp", False):
+                self._close_fp()
+            self.fp = None
+
+    def close(self) -> None:
         """
         Closes the file pointer, if possible.
 
@@ -544,41 +629,38 @@ class Image:
         :py:meth:`~PIL.Image.Image.load` method. See :ref:`file-handling` for
         more information.
         """
-        try:
-            if getattr(self, "_fp", False):
-                if self._fp != self.fp:
-                    self._fp.close()
-                self._fp = DeferredError(ValueError("Operation on closed image"))
-            if self.fp:
-                self.fp.close()
-            self.fp = None
-        except Exception as msg:
-            logger.debug("Error closing: %s", msg)
+        if hasattr(self, "fp"):
+            try:
+                self._close_fp()
+                self.fp = None
+            except Exception as msg:
+                logger.debug("Error closing: %s", msg)
 
         if getattr(self, "map", None):
-            self.map = None
+            self.map: mmap.mmap | None = None
 
         # Instead of simply setting to None, we're setting up a
         # deferred error that will better explain that the core image
         # object is gone.
-        self.im = DeferredError(ValueError("Operation on closed image"))
+        self._im = DeferredError(ValueError("Operation on closed image"))
 
-    def _copy(self):
+    def _copy(self) -> None:
         self.load()
         self.im = self.im.copy()
-        self.pyaccess = None
         self.readonly = 0
 
-    def _ensure_mutable(self):
+    def _ensure_mutable(self) -> None:
         if self.readonly:
             self._copy()
         else:
             self.load()
 
-    def _dump(self, file=None, format=None, **options):
+    def _dump(
+        self, file: str | None = None, format: str | None = None, **options: Any
+    ) -> str:
         suffix = ""
         if format:
-            suffix = "." + format
+            suffix = f".{format}"
 
         if not file:
             f, filename = tempfile.mkstemp(suffix)
@@ -597,17 +679,19 @@ class Image:
 
         return filename
 
-    def __eq__(self, other):
+    def __eq__(self, other: object) -> bool:
+        if self.__class__ is not other.__class__:
+            return False
+        assert isinstance(other, Image)
         return (
-            self.__class__ is other.__class__
-            and self.mode == other.mode
+            self.mode == other.mode
             and self.size == other.size
             and self.info == other.info
             and self.getpalette() == other.getpalette()
             and self.tobytes() == other.tobytes()
         )
 
-    def __repr__(self):
+    def __repr__(self) -> str:
         return "<%s.%s image mode=%s size=%dx%d at 0x%X>" % (
             self.__class__.__module__,
             self.__class__.__name__,
@@ -617,7 +701,7 @@ class Image:
             id(self),
         )
 
-    def _repr_pretty_(self, p, cycle):
+    def _repr_pretty_(self, p: PrettyPrinter, cycle: bool) -> None:
         """IPython plain text display support"""
 
         # Same as __repr__ but without unpredictable id(self),
@@ -633,7 +717,7 @@ class Image:
             )
         )
 
-    def _repr_image(self, image_format):
+    def _repr_image(self, image_format: str, **kwargs: Any) -> bytes | None:
         """Helper function for iPython display hook.
 
         :param image_format: Image format.
@@ -641,20 +725,19 @@ class Image:
         """
         b = io.BytesIO()
         try:
-            self.save(b, image_format)
-        except Exception as e:
-            msg = f"Could not save to {image_format} for display"
-            raise ValueError(msg) from e
+            self.save(b, image_format, **kwargs)
+        except Exception:
+            return None
         return b.getvalue()
 
-    def _repr_png_(self):
+    def _repr_png_(self) -> bytes | None:
         """iPython display hook support for PNG format.
 
         :returns: PNG version of the image as bytes
         """
-        return self._repr_image("PNG")
+        return self._repr_image("PNG", compress_level=1)
 
-    def _repr_jpeg_(self):
+    def _repr_jpeg_(self) -> bytes | None:
         """iPython display hook support for JPEG format.
 
         :returns: JPEG version of the image as bytes
@@ -662,46 +745,34 @@ class Image:
         return self._repr_image("JPEG")
 
     @property
-    def __array_interface__(self):
+    def __array_interface__(self) -> dict[str, str | bytes | int | tuple[int, ...]]:
         # numpy array interface support
-        new = {"version": 3}
-        try:
-            if self.mode == "1":
-                # Binary images need to be extended from bits to bytes
-                # See: https://github.com/python-pillow/Pillow/issues/350
-                new["data"] = self.tobytes("raw", "L")
-            else:
-                new["data"] = self.tobytes()
-        except Exception as e:
-            if not isinstance(e, (MemoryError, RecursionError)):
-                try:
-                    import numpy
-                    from packaging.version import parse as parse_version
-                except ImportError:
-                    pass
-                else:
-                    if parse_version(numpy.__version__) < parse_version("1.23"):
-                        warnings.warn(e)
-            raise
+        new: dict[str, str | bytes | int | tuple[int, ...]] = {"version": 3}
+        if self.mode == "1":
+            # Binary images need to be extended from bits to bytes
+            # See: https://github.com/python-pillow/Pillow/issues/350
+            new["data"] = self.tobytes("raw", "L")
+        else:
+            new["data"] = self.tobytes()
         new["shape"], new["typestr"] = _conv_type_shape(self)
         return new
 
-    def __getstate__(self):
+    def __getstate__(self) -> list[Any]:
         im_data = self.tobytes()  # load image first
         return [self.info, self.mode, self.size, self.getpalette(), im_data]
 
-    def __setstate__(self, state):
+    def __setstate__(self, state: list[Any]) -> None:
         Image.__init__(self)
         info, mode, size, palette, data = state
         self.info = info
-        self.mode = mode
+        self._mode = mode
         self._size = size
         self.im = core.new(mode, size)
         if mode in ("L", "LA", "P", "PA") and palette:
             self.putpalette(palette)
         self.frombytes(data)
 
-    def tobytes(self, encoder_name="raw", *args):
+    def tobytes(self, encoder_name: str = "raw", *args: Any) -> bytes:
         """
         Return image as a bytes object.
 
@@ -723,12 +794,13 @@ class Image:
         :returns: A :py:class:`bytes` object.
         """
 
-        # may pass tuple instead of argument list
-        if len(args) == 1 and isinstance(args[0], tuple):
-            args = args[0]
+        encoder_args: Any = args
+        if len(encoder_args) == 1 and isinstance(encoder_args[0], tuple):
+            # may pass tuple instead of argument list
+            encoder_args = encoder_args[0]
 
-        if encoder_name == "raw" and args == ():
-            args = self.mode
+        if encoder_name == "raw" and encoder_args == ():
+            encoder_args = self.mode
 
         self.load()
 
@@ -736,7 +808,7 @@ class Image:
             return b""
 
         # unpack data
-        e = _getencoder(self.mode, encoder_name, args)
+        e = _getencoder(self.mode, encoder_name, encoder_args)
         e.setimage(self.im)
 
         bufsize = max(65536, self.size[0] * 4)  # see RawEncode.c
@@ -753,7 +825,7 @@ class Image:
 
         return b"".join(output)
 
-    def tobitmap(self, name="image"):
+    def tobitmap(self, name: str = "image") -> bytes:
         """
         Returns the image converted to an X11 bitmap.
 
@@ -779,7 +851,12 @@ class Image:
             ]
         )
 
-    def frombytes(self, data, decoder_name="raw", *args):
+    def frombytes(
+        self,
+        data: bytes | bytearray | SupportsArrayInterface,
+        decoder_name: str = "raw",
+        *args: Any,
+    ) -> None:
         """
         Loads this image with pixel data from a bytes object.
 
@@ -787,16 +864,20 @@ class Image:
         but loads data into this image instead of creating a new image object.
         """
 
-        # may pass tuple instead of argument list
-        if len(args) == 1 and isinstance(args[0], tuple):
-            args = args[0]
+        if self.width == 0 or self.height == 0:
+            return
+
+        decoder_args: Any = args
+        if len(decoder_args) == 1 and isinstance(decoder_args[0], tuple):
+            # may pass tuple instead of argument list
+            decoder_args = decoder_args[0]
 
         # default format
-        if decoder_name == "raw" and args == ():
-            args = self.mode
+        if decoder_name == "raw" and decoder_args == ():
+            decoder_args = self.mode
 
         # unpack data
-        d = _getdecoder(self.mode, decoder_name, args)
+        d = _getdecoder(self.mode, decoder_name, decoder_args)
         d.setimage(self.im)
         s = d.decode(data)
 
@@ -807,7 +888,7 @@ class Image:
             msg = "cannot decode image data"
             raise ValueError(msg)
 
-    def load(self):
+    def load(self) -> core.PixelAccess | None:
         """
         Allocates storage for the image and loads the pixel data.  In
         normal cases, you don't need to call this method, since the
@@ -820,12 +901,12 @@ class Image:
         operations. See :ref:`file-handling` for more information.
 
         :returns: An image access object.
-        :rtype: :ref:`PixelAccess` or :py:class:`PIL.PyAccess`
+        :rtype: :py:class:`.PixelAccess`
         """
-        if self.im is not None and self.palette and self.palette.dirty:
+        if self._im is not None and self.palette and self.palette.dirty:
             # realize palette
             mode, arr = self.palette.getdata()
-            self.im.putpalette(mode, arr)
+            self.im.putpalette(self.palette.mode, mode, arr)
             self.palette.dirty = 0
             self.palette.rawmode = None
             if "transparency" in self.info and mode in ("LA", "PA"):
@@ -835,22 +916,15 @@ class Image:
                     self.im.putpalettealphas(self.info["transparency"])
                 self.palette.mode = "RGBA"
             else:
-                palette_mode = "RGBA" if mode.startswith("RGBA") else "RGB"
-                self.palette.mode = palette_mode
-                self.palette.palette = self.im.getpalette(palette_mode, palette_mode)
+                self.palette.palette = self.im.getpalette(
+                    self.palette.mode, self.palette.mode
+                )
 
-        if self.im is not None:
-            if cffi and USE_CFFI_ACCESS:
-                if self.pyaccess:
-                    return self.pyaccess
-                from . import PyAccess
-
-                self.pyaccess = PyAccess.new(self, self.readonly)
-                if self.pyaccess:
-                    return self.pyaccess
+        if self._im is not None:
             return self.im.pixel_access(self.readonly)
+        return None
 
-    def verify(self):
+    def verify(self) -> None:
         """
         Verifies the contents of a file. For data read from a file, this
         method attempts to determine if the file is broken, without
@@ -862,24 +936,28 @@ class Image:
         pass
 
     def convert(
-        self, mode=None, matrix=None, dither=None, palette=Palette.WEB, colors=256
-    ):
+        self,
+        mode: str | None = None,
+        matrix: tuple[float, ...] | None = None,
+        dither: Dither | None = None,
+        palette: Palette = Palette.WEB,
+        colors: int = 256,
+    ) -> Image:
         """
         Returns a converted copy of this image. For the "P" mode, this
         method translates pixels through the palette.  If mode is
         omitted, a mode is chosen so that all information in the image
         and the palette can be represented without a palette.
 
-        The current version supports all possible conversions between
-        "L", "RGB" and "CMYK". The ``matrix`` argument only supports "L"
-        and "RGB".
+        This supports all possible conversions between "L", "RGB" and "CMYK". The
+        ``matrix`` argument only supports "L" and "RGB".
 
-        When translating a color image to greyscale (mode "L"),
+        When translating a color image to grayscale (mode "L"),
         the library uses the ITU-R 601-2 luma transform::
 
             L = R * 299/1000 + G * 587/1000 + B * 114/1000
 
-        The default method of converting a greyscale ("L") or "RGB"
+        The default method of converting a grayscale ("L") or "RGB"
         image into a bilevel (mode "1") image uses Floyd-Steinberg
         dither to approximate the original image luminosity levels. If
         dither is ``None``, all values larger than 127 are set to 255 (white),
@@ -909,9 +987,12 @@ class Image:
         :returns: An :py:class:`~PIL.Image.Image` object.
         """
 
+        if mode in ("BGR;15", "BGR;16", "BGR;24"):
+            deprecate(mode, 12)
+
         self.load()
 
-        has_transparency = self.info.get("transparency") is not None
+        has_transparency = "transparency" in self.info
         if not mode and self.mode == "P":
             # determine default mode
             if self.palette:
@@ -929,13 +1010,15 @@ class Image:
                 msg = "illegal conversion"
                 raise ValueError(msg)
             im = self.im.convert_matrix(mode, matrix)
-            new = self._new(im)
+            new_im = self._new(im)
             if has_transparency and self.im.bands == 3:
-                transparency = new.info["transparency"]
+                transparency = new_im.info["transparency"]
 
-                def convert_transparency(m, v):
-                    v = m[0] * v[0] + m[1] * v[1] + m[2] * v[2] + m[3] * 0.5
-                    return max(0, min(255, int(v)))
+                def convert_transparency(
+                    m: tuple[float, ...], v: tuple[int, int, int]
+                ) -> int:
+                    value = m[0] * v[0] + m[1] * v[1] + m[2] * v[2] + m[3] * 0.5
+                    return max(0, min(255, int(value)))
 
                 if mode == "L":
                     transparency = convert_transparency(matrix, transparency)
@@ -944,8 +1027,8 @@ class Image:
                         convert_transparency(matrix[i * 4 : i * 4 + 4], transparency)
                         for i in range(0, len(transparency))
                     )
-                new.info["transparency"] = transparency
-            return new
+                new_im.info["transparency"] = transparency
+            return new_im
 
         if mode == "P" and self.mode == "RGBA":
             return self.quantize(colors)
@@ -954,8 +1037,8 @@ class Image:
         delete_trns = False
         # transparency handling
         if has_transparency:
-            if (self.mode in ("1", "L", "I") and mode in ("LA", "RGBA")) or (
-                self.mode == "RGB" and mode == "RGBA"
+            if (self.mode in ("1", "L", "I", "I;16") and mode in ("LA", "RGBA")) or (
+                self.mode == "RGB" and mode in ("La", "LA", "RGBa", "RGBA")
             ):
                 # Use transparent conversion to promote from transparent
                 # color to an alpha channel.
@@ -976,11 +1059,13 @@ class Image:
                 else:
                     # get the new transparency color.
                     # use existing conversions
-                    trns_im = Image()._new(core.new(self.mode, (1, 1)))
+                    trns_im = new(self.mode, (1, 1))
                     if self.mode == "P":
-                        trns_im.putpalette(self.palette)
+                        assert self.palette is not None
+                        trns_im.putpalette(self.palette, self.palette.mode)
                         if isinstance(t, tuple):
                             err = "Couldn't allocate a palette color for transparency"
+                            assert trns_im.palette is not None
                             try:
                                 t = trns_im.palette.getcolor(t, self)
                             except ValueError as e:
@@ -1017,36 +1102,47 @@ class Image:
 
         if mode == "P" and palette == Palette.ADAPTIVE:
             im = self.im.quantize(colors)
-            new = self._new(im)
+            new_im = self._new(im)
             from . import ImagePalette
 
-            new.palette = ImagePalette.ImagePalette("RGB", new.im.getpalette("RGB"))
+            new_im.palette = ImagePalette.ImagePalette(
+                "RGB", new_im.im.getpalette("RGB")
+            )
             if delete_trns:
                 # This could possibly happen if we requantize to fewer colors.
                 # The transparency would be totally off in that case.
-                del new.info["transparency"]
+                del new_im.info["transparency"]
             if trns is not None:
                 try:
-                    new.info["transparency"] = new.palette.getcolor(trns, new)
+                    new_im.info["transparency"] = new_im.palette.getcolor(
+                        cast(tuple[int, ...], trns),  # trns was converted to RGB
+                        new_im,
+                    )
                 except Exception:
                     # if we can't make a transparent color, don't leave the old
                     # transparency hanging around to mess us up.
-                    del new.info["transparency"]
+                    del new_im.info["transparency"]
                     warnings.warn("Couldn't allocate palette entry for transparency")
-            return new
+            return new_im
 
         if "LAB" in (self.mode, mode):
-            other_mode = mode if self.mode == "LAB" else self.mode
+            im = self
+            if mode == "LAB":
+                if im.mode not in ("RGB", "RGBA", "RGBX"):
+                    im = im.convert("RGBA")
+                other_mode = im.mode
+            else:
+                other_mode = mode
             if other_mode in ("RGB", "RGBA", "RGBX"):
                 from . import ImageCms
 
                 srgb = ImageCms.createProfile("sRGB")
                 lab = ImageCms.createProfile("LAB")
-                profiles = [lab, srgb] if self.mode == "LAB" else [srgb, lab]
+                profiles = [lab, srgb] if im.mode == "LAB" else [srgb, lab]
                 transform = ImageCms.buildTransform(
-                    profiles[0], profiles[1], self.mode, mode
+                    profiles[0], profiles[1], im.mode, mode
                 )
-                return transform.apply(self)
+                return transform.apply(im)
 
         # colorspace conversion
         if dither is None:
@@ -1070,14 +1166,16 @@ class Image:
         if mode == "P" and palette != Palette.ADAPTIVE:
             from . import ImagePalette
 
-            new_im.palette = ImagePalette.ImagePalette("RGB", list(range(256)) * 3)
+            new_im.palette = ImagePalette.ImagePalette("RGB", im.getpalette("RGB"))
         if delete_trns:
             # crash fail if we leave a bytes transparency in an rgb/l mode.
             del new_im.info["transparency"]
         if trns is not None:
-            if new_im.mode == "P":
+            if new_im.mode == "P" and new_im.palette:
                 try:
-                    new_im.info["transparency"] = new_im.palette.getcolor(trns, new_im)
+                    new_im.info["transparency"] = new_im.palette.getcolor(
+                        cast(tuple[int, ...], trns), new_im  # trns was converted to RGB
+                    )
                 except ValueError as e:
                     del new_im.info["transparency"]
                     if str(e) != "cannot allocate more than 256 colors":
@@ -1092,12 +1190,12 @@ class Image:
 
     def quantize(
         self,
-        colors=256,
-        method=None,
-        kmeans=0,
-        palette=None,
-        dither=Dither.FLOYDSTEINBERG,
-    ):
+        colors: int = 256,
+        method: int | None = None,
+        kmeans: int = 0,
+        palette: Image | None = None,
+        dither: Dither = Dither.FLOYDSTEINBERG,
+    ) -> Image:
         """
         Convert the image to 'P' mode with the specified number
         of colors.
@@ -1115,7 +1213,7 @@ class Image:
                        The exception to this is RGBA images. :data:`Quantize.MEDIANCUT`
                        and :data:`Quantize.MAXCOVERAGE` do not support RGBA images, so
                        :data:`Quantize.FASTOCTREE` is used by default instead.
-        :param kmeans: Integer
+        :param kmeans: Integer greater than or equal to zero.
         :param palette: Quantize to the palette of given
                         :py:class:`PIL.Image.Image`.
         :param dither: Dithering method, used when converting from
@@ -1150,25 +1248,30 @@ class Image:
             if palette.mode != "P":
                 msg = "bad mode for palette image"
                 raise ValueError(msg)
-            if self.mode != "RGB" and self.mode != "L":
+            if self.mode not in {"RGB", "L"}:
                 msg = "only RGB or L mode images can be quantized to a palette"
                 raise ValueError(msg)
             im = self.im.convert("P", dither, palette.im)
             new_im = self._new(im)
+            assert palette.palette is not None
             new_im.palette = palette.palette.copy()
             return new_im
 
+        if kmeans < 0:
+            msg = "kmeans must not be negative"
+            raise ValueError(msg)
+
         im = self._new(self.im.quantize(colors, method, kmeans))
 
         from . import ImagePalette
 
         mode = im.im.getpalettemode()
-        palette = im.im.getpalette(mode, mode)[: colors * len(mode)]
-        im.palette = ImagePalette.ImagePalette(mode, palette)
+        palette_data = im.im.getpalette(mode, mode)[: colors * len(mode)]
+        im.palette = ImagePalette.ImagePalette(mode, palette_data)
 
         return im
 
-    def copy(self):
+    def copy(self) -> Image:
         """
         Copies this image. Use this method if you wish to paste things
         into an image, but still retain the original.
@@ -1181,7 +1284,7 @@ class Image:
 
     __copy__ = copy
 
-    def crop(self, box=None):
+    def crop(self, box: tuple[float, float, float, float] | None = None) -> Image:
         """
         Returns a rectangular region from this image. The box is a
         4-tuple defining the left, upper, right, and lower pixel
@@ -1207,7 +1310,9 @@ class Image:
         self.load()
         return self._new(self._crop(self.im, box))
 
-    def _crop(self, im, box):
+    def _crop(
+        self, im: core.ImagingCore, box: tuple[float, float, float, float]
+    ) -> core.ImagingCore:
         """
         Returns a rectangular region from the core image object im.
 
@@ -1227,12 +1332,14 @@ class Image:
 
         return im.crop((x0, y0, x1, y1))
 
-    def draft(self, mode, size):
+    def draft(
+        self, mode: str | None, size: tuple[int, int] | None
+    ) -> tuple[str, tuple[int, int, float, float]] | None:
         """
         Configures the image file loader so it returns a version of the
         image that as closely as possible matches the given mode and
         size. For example, you can use this method to convert a color
-        JPEG to greyscale while loading it.
+        JPEG to grayscale while loading it.
 
         If any changes are made, returns a tuple with the chosen ``mode`` and
         ``box`` with coordinates of the original image within the altered one.
@@ -1250,13 +1357,13 @@ class Image:
         """
         pass
 
-    def _expand(self, xmargin, ymargin=None):
+    def _expand(self, xmargin: int, ymargin: int | None = None) -> Image:
         if ymargin is None:
             ymargin = xmargin
         self.load()
         return self._new(self.im.expand(xmargin, ymargin))
 
-    def filter(self, filter):
+    def filter(self, filter: ImageFilter.Filter | type[ImageFilter.Filter]) -> Image:
         """
         Filters this image using the given filter.  For a list of
         available filters, see the :py:mod:`~PIL.ImageFilter` module.
@@ -1268,7 +1375,7 @@ class Image:
 
         self.load()
 
-        if isinstance(filter, Callable):
+        if callable(filter):
             filter = filter()
         if not hasattr(filter, "filter"):
             msg = "filter argument should be ImageFilter.Filter instance or class"
@@ -1278,12 +1385,12 @@ class Image:
         if self.im.bands == 1 or multiband:
             return self._new(filter.filter(self.im))
 
-        ims = []
-        for c in range(self.im.bands):
-            ims.append(self._new(filter.filter(self.im.getband(c))))
+        ims = [
+            self._new(filter.filter(self.im.getband(c))) for c in range(self.im.bands)
+        ]
         return merge(self.mode, ims)
 
-    def getbands(self):
+    def getbands(self) -> tuple[str, ...]:
         """
         Returns a tuple containing the name of each band in this image.
         For example, ``getbands`` on an RGB image returns ("R", "G", "B").
@@ -1293,11 +1400,15 @@ class Image:
         """
         return ImageMode.getmode(self.mode).bands
 
-    def getbbox(self):
+    def getbbox(self, *, alpha_only: bool = True) -> tuple[int, int, int, int] | None:
         """
         Calculates the bounding box of the non-zero regions in the
         image.
 
+        :param alpha_only: Optional flag, defaulting to ``True``.
+           If ``True`` and the image has an alpha channel, trim transparent pixels.
+           Otherwise, trim pixels when all channels are zero.
+           Keyword-only argument.
         :returns: The bounding box is returned as a 4-tuple defining the
            left, upper, right, and lower pixel coordinate. See
            :ref:`coordinate-system`. If the image is completely empty, this
@@ -1306,9 +1417,11 @@ class Image:
         """
 
         self.load()
-        return self.im.getbbox()
+        return self.im.getbbox(alpha_only)
 
-    def getcolors(self, maxcolors=256):
+    def getcolors(
+        self, maxcolors: int = 256
+    ) -> list[tuple[int, tuple[int, ...]]] | list[tuple[int, float]] | None:
         """
         Returns a list of colors used in this image.
 
@@ -1325,16 +1438,13 @@ class Image:
         self.load()
         if self.mode in ("1", "L", "P"):
             h = self.im.histogram()
-            out = []
-            for i in range(256):
-                if h[i]:
-                    out.append((h[i], i))
+            out: list[tuple[int, float]] = [(h[i], i) for i in range(256) if h[i]]
             if len(out) > maxcolors:
                 return None
             return out
         return self.im.getcolors(maxcolors)
 
-    def getdata(self, band=None):
+    def getdata(self, band: int | None = None) -> core.ImagingCore:
         """
         Returns the contents of this image as a sequence object
         containing pixel values.  The sequence object is flattened, so
@@ -1357,7 +1467,7 @@ class Image:
             return self.im.getband(band)
         return self.im  # could be abused
 
-    def getextrema(self):
+    def getextrema(self) -> tuple[float, float] | tuple[tuple[int, int], ...]:
         """
         Gets the minimum and maximum pixel values for each band in
         the image.
@@ -1369,18 +1479,22 @@ class Image:
 
         self.load()
         if self.im.bands > 1:
-            extrema = []
-            for i in range(self.im.bands):
-                extrema.append(self.im.getband(i).getextrema())
-            return tuple(extrema)
+            return tuple(self.im.getband(i).getextrema() for i in range(self.im.bands))
         return self.im.getextrema()
 
-    def _getxmp(self, xmp_tags):
-        def get_name(tag):
-            return tag.split("}")[1]
+    def getxmp(self) -> dict[str, Any]:
+        """
+        Returns a dictionary containing the XMP tags.
+        Requires defusedxml to be installed.
 
-        def get_value(element):
-            value = {get_name(k): v for k, v in element.attrib.items()}
+        :returns: XMP tags in a dictionary.
+        """
+
+        def get_name(tag: str) -> str:
+            return re.sub("^{[^}]+}", "", tag)
+
+        def get_value(element: Element) -> str | dict[str, Any] | None:
+            value: dict[str, Any] = {get_name(k): v for k, v in element.attrib.items()}
             children = list(element)
             if children:
                 for child in children:
@@ -1402,11 +1516,12 @@ class Image:
         if ElementTree is None:
             warnings.warn("XMP data cannot be read without defusedxml dependency")
             return {}
-        else:
-            root = ElementTree.fromstring(xmp_tags)
-            return {get_name(root.tag): get_value(root)}
+        if "xmp" not in self.info:
+            return {}
+        root = ElementTree.fromstring(self.info["xmp"].rstrip(b"\x00"))
+        return {get_name(root.tag): get_value(root)}
 
-    def getexif(self):
+    def getexif(self) -> Exif:
         """
         Gets EXIF data from the image.
 
@@ -1414,7 +1529,6 @@ class Image:
         """
         if self._exif is None:
             self._exif = Exif()
-            self._exif._loaded = False
         elif self._exif._loaded:
             return self._exif
         self._exif._loaded = True
@@ -1442,13 +1556,13 @@ class Image:
 
         return self._exif
 
-    def _reload_exif(self):
+    def _reload_exif(self) -> None:
         if self._exif is None or not self._exif._loaded:
             return
         self._exif._loaded = False
         self.getexif()
 
-    def get_child_images(self):
+    def get_child_images(self) -> list[ImageFile.ImageFile]:
         child_images = []
         exif = self.getexif()
         ifds = []
@@ -1461,6 +1575,7 @@ class Image:
                     ifds.append((exif._get_ifd_dict(subifd_offset), subifd_offset))
         ifd1 = exif.get_ifd(ExifTags.IFD.IFD1)
         if ifd1 and ifd1.get(513):
+            assert exif._info is not None
             ifds.append((ifd1, exif._info.next))
 
         offset = None
@@ -1470,18 +1585,20 @@ class Image:
                 offset = current_offset
 
             fp = self.fp
-            thumbnail_offset = ifd.get(513)
-            if thumbnail_offset is not None:
-                try:
-                    thumbnail_offset += self._exif_offset
-                except AttributeError:
-                    pass
-                self.fp.seek(thumbnail_offset)
-                data = self.fp.read(ifd.get(514))
-                fp = io.BytesIO(data)
+            if ifd is not None:
+                thumbnail_offset = ifd.get(513)
+                if thumbnail_offset is not None:
+                    thumbnail_offset += getattr(self, "_exif_offset", 0)
+                    self.fp.seek(thumbnail_offset)
+                    data = self.fp.read(ifd.get(514))
+                    fp = io.BytesIO(data)
 
             with open(fp) as im:
-                if thumbnail_offset is None:
+                from . import TiffImagePlugin
+
+                if thumbnail_offset is None and isinstance(
+                    im, TiffImagePlugin.TiffImageFile
+                ):
                     im._frame_pos = [ifd_offset]
                     im._seek(0)
                 im.load()
@@ -1491,7 +1608,7 @@ class Image:
             self.fp.seek(offset)
         return child_images
 
-    def getim(self):
+    def getim(self) -> CapsuleType:
         """
         Returns a capsule that points to the internal image memory.
 
@@ -1501,7 +1618,7 @@ class Image:
         self.load()
         return self.im.ptr
 
-    def getpalette(self, rawmode="RGB"):
+    def getpalette(self, rawmode: str | None = "RGB") -> list[int] | None:
         """
         Returns the image palette as a list.
 
@@ -1523,7 +1640,29 @@ class Image:
             rawmode = mode
         return list(self.im.getpalette(mode, rawmode))
 
-    def apply_transparency(self):
+    @property
+    def has_transparency_data(self) -> bool:
+        """
+        Determine if an image has transparency data, whether in the form of an
+        alpha channel, a palette with an alpha channel, or a "transparency" key
+        in the info dictionary.
+
+        Note the image might still appear solid, if all of the values shown
+        within are opaque.
+
+        :returns: A boolean.
+        """
+        if (
+            self.mode in ("LA", "La", "PA", "RGBA", "RGBa")
+            or "transparency" in self.info
+        ):
+            return True
+        if self.mode == "P":
+            assert self.palette is not None
+            return self.palette.mode.endswith("A")
+        return False
+
+    def apply_transparency(self) -> None:
         """
         If a P mode image has a "transparency" key in the info dictionary,
         remove the key and instead apply the transparency to the palette.
@@ -1535,6 +1674,7 @@ class Image:
         from . import ImagePalette
 
         palette = self.getpalette("RGBA")
+        assert palette is not None
         transparency = self.info["transparency"]
         if isinstance(transparency, bytes):
             for i, alpha in enumerate(transparency):
@@ -1546,7 +1686,9 @@ class Image:
 
         del self.info["transparency"]
 
-    def getpixel(self, xy):
+    def getpixel(
+        self, xy: tuple[int, int] | list[int]
+    ) -> float | tuple[int, ...] | None:
         """
         Returns the pixel value at a given position.
 
@@ -1557,11 +1699,9 @@ class Image:
         """
 
         self.load()
-        if self.pyaccess:
-            return self.pyaccess.getpixel(xy)
-        return self.im.getpixel(xy)
+        return self.im.getpixel(tuple(xy))
 
-    def getprojection(self):
+    def getprojection(self) -> tuple[list[int], list[int]]:
         """
         Get projection to x and y axes
 
@@ -1573,7 +1713,9 @@ class Image:
         x, y = self.im.getprojection()
         return list(x), list(y)
 
-    def histogram(self, mask=None, extrema=None):
+    def histogram(
+        self, mask: Image | None = None, extrema: tuple[float, float] | None = None
+    ) -> list[int]:
         """
         Returns a histogram for the image. The histogram is returned as a
         list of pixel counts, one for each pixel value in the source
@@ -1582,13 +1724,13 @@ class Image:
         than one band, the histograms for all bands are concatenated (for
         example, the histogram for an "RGB" image contains 768 values).
 
-        A bilevel image (mode "1") is treated as a greyscale ("L") image
+        A bilevel image (mode "1") is treated as a grayscale ("L") image
         by this method.
 
         If a mask is provided, the method returns a histogram for those
         parts of the image where the mask image is non-zero. The mask
         image must have the same size as the image, and be either a
-        bi-level image (mode "1") or a greyscale image ("L").
+        bi-level image (mode "1") or a grayscale image ("L").
 
         :param mask: An optional mask.
         :param extrema: An optional tuple of manually-specified extrema.
@@ -1599,22 +1741,24 @@ class Image:
             mask.load()
             return self.im.histogram((0, 0), mask.im)
         if self.mode in ("I", "F"):
-            if extrema is None:
-                extrema = self.getextrema()
-            return self.im.histogram(extrema)
+            return self.im.histogram(
+                extrema if extrema is not None else self.getextrema()
+            )
         return self.im.histogram()
 
-    def entropy(self, mask=None, extrema=None):
+    def entropy(
+        self, mask: Image | None = None, extrema: tuple[float, float] | None = None
+    ) -> float:
         """
         Calculates and returns the entropy for the image.
 
-        A bilevel image (mode "1") is treated as a greyscale ("L")
+        A bilevel image (mode "1") is treated as a grayscale ("L")
         image by this method.
 
         If a mask is provided, the method employs the histogram for
         those parts of the image where the mask image is non-zero.
         The mask image must have the same size as the image, and be
-        either a bi-level image (mode "1") or a greyscale image ("L").
+        either a bi-level image (mode "1") or a grayscale image ("L").
 
         :param mask: An optional mask.
         :param extrema: An optional tuple of manually-specified extrema.
@@ -1625,12 +1769,17 @@ class Image:
             mask.load()
             return self.im.entropy((0, 0), mask.im)
         if self.mode in ("I", "F"):
-            if extrema is None:
-                extrema = self.getextrema()
-            return self.im.entropy(extrema)
+            return self.im.entropy(
+                extrema if extrema is not None else self.getextrema()
+            )
         return self.im.entropy()
 
-    def paste(self, im, box=None, mask=None):
+    def paste(
+        self,
+        im: Image | str | float | tuple[float, ...],
+        box: Image | tuple[int, int, int, int] | tuple[int, int] | None = None,
+        mask: Image | None = None,
+    ) -> None:
         """
         Pastes another image into this image. The box argument is either
         a 2-tuple giving the upper left corner, a 4-tuple defining the
@@ -1658,7 +1807,7 @@ class Image:
         See :py:meth:`~PIL.Image.Image.alpha_composite` if you want to
         combine images with respect to their alpha channels.
 
-        :param im: Source image or pixel value (integer or tuple).
+        :param im: Source image or pixel value (integer, float or tuple).
         :param box: An optional 4-tuple giving the region to paste into.
            If a 2-tuple is used instead, it's treated as the upper left
            corner.  If omitted or None, the source is pasted into the
@@ -1670,7 +1819,10 @@ class Image:
         :param mask: An optional mask image.
         """
 
-        if isImageType(box) and mask is None:
+        if isinstance(box, Image):
+            if mask is not None:
+                msg = "If using second argument as mask, third argument must be None"
+                raise ValueError(msg)
             # abbreviated paste(im, mask) syntax
             mask = box
             box = None
@@ -1680,9 +1832,9 @@ class Image:
 
         if len(box) == 2:
             # upper left corner given; get size from image or mask
-            if isImageType(im):
+            if isinstance(im, Image):
                 size = im.size
-            elif isImageType(mask):
+            elif isinstance(mask, Image):
                 size = mask.size
             else:
                 # FIXME: use self.size here?
@@ -1690,28 +1842,32 @@ class Image:
                 raise ValueError(msg)
             box += (box[0] + size[0], box[1] + size[1])
 
+        source: core.ImagingCore | str | float | tuple[float, ...]
         if isinstance(im, str):
             from . import ImageColor
 
-            im = ImageColor.getcolor(im, self.mode)
-
-        elif isImageType(im):
+            source = ImageColor.getcolor(im, self.mode)
+        elif isinstance(im, Image):
             im.load()
             if self.mode != im.mode:
                 if self.mode != "RGB" or im.mode not in ("LA", "RGBA", "RGBa"):
                     # should use an adapter for this!
                     im = im.convert(self.mode)
-            im = im.im
+            source = im.im
+        else:
+            source = im
 
         self._ensure_mutable()
 
         if mask:
             mask.load()
-            self.im.paste(im, box, mask.im)
+            self.im.paste(source, box, mask.im)
         else:
-            self.im.paste(im, box)
+            self.im.paste(source, box)
 
-    def alpha_composite(self, im, dest=(0, 0), source=(0, 0)):
+    def alpha_composite(
+        self, im: Image, dest: Sequence[int] = (0, 0), source: Sequence[int] = (0, 0)
+    ) -> None:
         """'In-place' analog of Image.alpha_composite. Composites an image
         onto this image.
 
@@ -1726,32 +1882,35 @@ class Image:
         """
 
         if not isinstance(source, (list, tuple)):
-            msg = "Source must be a tuple"
+            msg = "Source must be a list or tuple"
             raise ValueError(msg)
         if not isinstance(dest, (list, tuple)):
-            msg = "Destination must be a tuple"
+            msg = "Destination must be a list or tuple"
             raise ValueError(msg)
-        if len(source) not in (2, 4):
-            msg = "Source must be a 2 or 4-tuple"
+
+        if len(source) == 4:
+            overlay_crop_box = tuple(source)
+        elif len(source) == 2:
+            overlay_crop_box = tuple(source) + im.size
+        else:
+            msg = "Source must be a sequence of length 2 or 4"
             raise ValueError(msg)
+
         if not len(dest) == 2:
-            msg = "Destination must be a 2-tuple"
+            msg = "Destination must be a sequence of length 2"
             raise ValueError(msg)
         if min(source) < 0:
             msg = "Source must be non-negative"
             raise ValueError(msg)
 
-        if len(source) == 2:
-            source = source + im.size
-
-        # over image, crop if it's not the whole thing.
-        if source == (0, 0) + im.size:
+        # over image, crop if it's not the whole image.
+        if overlay_crop_box == (0, 0) + im.size:
             overlay = im
         else:
-            overlay = im.crop(source)
+            overlay = im.crop(overlay_crop_box)
 
         # target for the paste
-        box = dest + (dest[0] + overlay.width, dest[1] + overlay.height)
+        box = tuple(dest) + (dest[0] + overlay.width, dest[1] + overlay.height)
 
         # destination image. don't copy if we're using the whole image.
         if box == (0, 0) + self.size:
@@ -1762,7 +1921,17 @@ class Image:
         result = alpha_composite(background, overlay)
         self.paste(result, box)
 
-    def point(self, lut, mode=None):
+    def point(
+        self,
+        lut: (
+            Sequence[float]
+            | NumpyArray
+            | Callable[[int], float]
+            | Callable[[ImagePointTransform], ImagePointTransform | float]
+            | ImagePointHandler
+        ),
+        mode: str | None = None,
+    ) -> Image:
         """
         Maps this image through a lookup table or function.
 
@@ -1777,11 +1946,10 @@ class Image:
            object::
 
                class Example(Image.ImagePointHandler):
-                 def point(self, data):
+                 def point(self, im: Image) -> Image:
                    # Return result
-        :param mode: Output mode (default is same as input).  In the
-           current version, this can only be used if the source image
-           has mode "L" or "P", and the output has mode "1" or the
+        :param mode: Output mode (default is same as input). This can only be used if
+           the source image has mode "L" or "P", and the output has mode "1" or the
            source image mode is "I" and the output mode is "L".
         :returns: An :py:class:`~PIL.Image.Image` object.
         """
@@ -1797,10 +1965,12 @@ class Image:
                 # check if the function can be used with point_transform
                 # UNDONE wiredfool -- I think this prevents us from ever doing
                 # a gamma function point transform on > 8bit images.
-                scale, offset = _getscaleoffset(lut)
+                scale, offset = _getscaleoffset(lut)  # type: ignore[arg-type]
                 return self._new(self.im.point_transform(scale, offset))
             # for other modes, convert the function to a table
-            lut = [lut(i) for i in range(256)] * self.im.bands
+            flatLut = [lut(i) for i in range(256)] * self.im.bands  # type: ignore[arg-type]
+        else:
+            flatLut = lut
 
         if self.mode == "F":
             # FIXME: _imaging returns a confusing error message for this case
@@ -1808,18 +1978,17 @@ class Image:
             raise ValueError(msg)
 
         if mode != "F":
-            lut = [round(i) for i in lut]
-        return self._new(self.im.point(lut, mode))
+            flatLut = [round(i) for i in flatLut]
+        return self._new(self.im.point(flatLut, mode))
 
-    def putalpha(self, alpha):
+    def putalpha(self, alpha: Image | int) -> None:
         """
         Adds or replaces the alpha layer in this image.  If the image
         does not have an alpha layer, it's converted to "LA" or "RGBA".
         The new layer must be either "L" or "1".
 
         :param alpha: The new alpha layer.  This can either be an "L" or "1"
-           image having the same size as this image, or an integer or
-           other color value.
+           image having the same size as this image, or an integer.
         """
 
         self._ensure_mutable()
@@ -1834,10 +2003,10 @@ class Image:
                     # do things the hard way
                     im = self.im.convert(mode)
                     if im.mode not in ("LA", "PA", "RGBA"):
-                        raise ValueError from e  # sanity check
+                        msg = "alpha channel could not be added"
+                        raise ValueError(msg) from e  # sanity check
                     self.im = im
-                self.pyaccess = None
-                self.mode = self.im.mode
+                self._mode = self.im.mode
             except KeyError as e:
                 msg = "illegal image mode"
                 raise ValueError(msg) from e
@@ -1847,7 +2016,7 @@ class Image:
         else:
             band = 3
 
-        if isImageType(alpha):
+        if isinstance(alpha, Image):
             # alpha layer
             if alpha.mode not in ("1", "L"):
                 msg = "illegal image mode"
@@ -1867,7 +2036,12 @@ class Image:
 
         self.im.putband(alpha.im, band)
 
-    def putdata(self, data, scale=1.0, offset=0.0):
+    def putdata(
+        self,
+        data: Sequence[float] | Sequence[Sequence[int]] | core.ImagingCore | NumpyArray,
+        scale: float = 1.0,
+        offset: float = 0.0,
+    ) -> None:
         """
         Copies pixel data from a flattened sequence object into the image. The
         values should start at the upper left corner (0, 0), continue to the
@@ -1885,7 +2059,11 @@ class Image:
 
         self.im.putdata(data, scale, offset)
 
-    def putpalette(self, data, rawmode="RGB"):
+    def putpalette(
+        self,
+        data: ImagePalette.ImagePalette | bytes | Sequence[int],
+        rawmode: str = "RGB",
+    ) -> None:
         """
         Attaches a palette to this image.  The image must be a "P", "PA", "L"
         or "LA" image.
@@ -1910,17 +2088,23 @@ class Image:
             msg = "illegal image mode"
             raise ValueError(msg)
         if isinstance(data, ImagePalette.ImagePalette):
-            palette = ImagePalette.raw(data.rawmode, data.palette)
+            if data.rawmode is not None:
+                palette = ImagePalette.raw(data.rawmode, data.palette)
+            else:
+                palette = ImagePalette.ImagePalette(palette=data.palette)
+                palette.dirty = 1
         else:
             if not isinstance(data, bytes):
                 data = bytes(data)
             palette = ImagePalette.raw(rawmode, data)
-        self.mode = "PA" if "A" in self.mode else "P"
+        self._mode = "PA" if "A" in self.mode else "P"
         self.palette = palette
-        self.palette.mode = "RGB"
+        self.palette.mode = "RGBA" if "A" in rawmode else "RGB"
         self.load()  # install new palette
 
-    def putpixel(self, xy, value):
+    def putpixel(
+        self, xy: tuple[int, int], value: float | tuple[int, ...] | list[int]
+    ) -> None:
         """
         Modifies the pixel at the given position. The color is given as
         a single numerical value for single-band images, and a tuple for
@@ -1946,9 +2130,6 @@ class Image:
             self._copy()
         self.load()
 
-        if self.pyaccess:
-            return self.pyaccess.putpixel(xy, value)
-
         if (
             self.mode in ("P", "PA")
             and isinstance(value, (list, tuple))
@@ -1958,12 +2139,14 @@ class Image:
             if self.mode == "PA":
                 alpha = value[3] if len(value) == 4 else 255
                 value = value[:3]
-            value = self.palette.getcolor(value, self)
-            if self.mode == "PA":
-                value = (value, alpha)
+            assert self.palette is not None
+            palette_index = self.palette.getcolor(tuple(value), self)
+            value = (palette_index, alpha) if self.mode == "PA" else palette_index
         return self.im.putpixel(xy, value)
 
-    def remap_palette(self, dest_map, source_palette=None):
+    def remap_palette(
+        self, dest_map: list[int], source_palette: bytes | bytearray | None = None
+    ) -> Image:
         """
         Rewrites the image to reorder the palette.
 
@@ -1991,6 +2174,9 @@ class Image:
                 source_palette = self.im.getpalette(palette_mode, palette_mode)
             else:  # L-mode
                 source_palette = bytearray(i // 3 for i in range(768))
+        elif len(source_palette) > 768:
+            bands = 4
+            palette_mode = "RGBA"
 
         palette_bytes = b""
         new_positions = [0] * 256
@@ -2023,7 +2209,7 @@ class Image:
         mapping_palette = bytearray(new_positions)
 
         m_im = self.copy()
-        m_im.mode = "P"
+        m_im._mode = "P"
 
         m_im.palette = ImagePalette.ImagePalette(
             palette_mode, palette=mapping_palette * bands
@@ -2032,7 +2218,7 @@ class Image:
         # m_im.putpalette(mapping_palette, 'L')  # converts to 'P'
         # or just force it.
         # UNDONE -- this is part of the general issue with palettes
-        m_im.im.putpalette(palette_mode + ";L", m_im.palette.tobytes())
+        m_im.im.putpalette(palette_mode, palette_mode + ";L", m_im.palette.tobytes())
 
         m_im = m_im.convert("L")
 
@@ -2048,7 +2234,12 @@ class Image:
 
         return m_im
 
-    def _get_safe_box(self, size, resample, box):
+    def _get_safe_box(
+        self,
+        size: tuple[int, int],
+        resample: Resampling,
+        box: tuple[float, float, float, float],
+    ) -> tuple[int, int, int, int]:
         """Expands the box so it includes adjacent pixels
         that may be used by resampling with the given resampling filter.
         """
@@ -2065,19 +2256,25 @@ class Image:
             min(self.size[1], math.ceil(box[3] + support_y)),
         )
 
-    def resize(self, size, resample=None, box=None, reducing_gap=None):
+    def resize(
+        self,
+        size: tuple[int, int] | list[int] | NumpyArray,
+        resample: int | None = None,
+        box: tuple[float, float, float, float] | None = None,
+        reducing_gap: float | None = None,
+    ) -> Image:
         """
         Returns a resized copy of this image.
 
-        :param size: The requested size in pixels, as a 2-tuple:
+        :param size: The requested size in pixels, as a tuple or array:
            (width, height).
         :param resample: An optional resampling filter.  This can be
            one of :py:data:`Resampling.NEAREST`, :py:data:`Resampling.BOX`,
            :py:data:`Resampling.BILINEAR`, :py:data:`Resampling.HAMMING`,
            :py:data:`Resampling.BICUBIC` or :py:data:`Resampling.LANCZOS`.
            If the image has mode "1" or "P", it is always set to
-           :py:data:`Resampling.NEAREST`. If the image mode specifies a number
-           of bits, such as "I;16", then the default filter is
+           :py:data:`Resampling.NEAREST`. If the image mode is "BGR;15",
+           "BGR;16" or "BGR;24", then the default filter is
            :py:data:`Resampling.NEAREST`. Otherwise, the default filter is
            :py:data:`Resampling.BICUBIC`. See: :ref:`concept-filters`.
         :param box: An optional 4-tuple of floats providing
@@ -2100,8 +2297,8 @@ class Image:
         """
 
         if resample is None:
-            type_special = ";" in self.mode
-            resample = Resampling.NEAREST if type_special else Resampling.BICUBIC
+            bgr = self.mode.startswith("BGR;")
+            resample = Resampling.NEAREST if bgr else Resampling.BICUBIC
         elif resample not in (
             Resampling.NEAREST,
             Resampling.BILINEAR,
@@ -2123,21 +2320,17 @@ class Image:
                     (Resampling.HAMMING, "Image.Resampling.HAMMING"),
                 )
             ]
-            msg += " Use " + ", ".join(filters[:-1]) + " or " + filters[-1]
+            msg += f" Use {', '.join(filters[:-1])} or {filters[-1]}"
             raise ValueError(msg)
 
         if reducing_gap is not None and reducing_gap < 1.0:
             msg = "reducing_gap must be 1.0 or greater"
             raise ValueError(msg)
 
-        size = tuple(size)
-
-        self.load()
         if box is None:
             box = (0, 0) + self.size
-        else:
-            box = tuple(box)
 
+        size = tuple(size)
         if self.size == size and box == (0, 0) + self.size:
             return self.copy()
 
@@ -2155,12 +2348,13 @@ class Image:
             factor_x = int((box[2] - box[0]) / size[0] / reducing_gap) or 1
             factor_y = int((box[3] - box[1]) / size[1] / reducing_gap) or 1
             if factor_x > 1 or factor_y > 1:
-                reduce_box = self._get_safe_box(size, resample, box)
+                reduce_box = self._get_safe_box(size, cast(Resampling, resample), box)
                 factor = (factor_x, factor_y)
-                if callable(self.reduce):
-                    self = self.reduce(factor, box=reduce_box)
-                else:
-                    self = Image.reduce(self, factor, box=reduce_box)
+                self = (
+                    self.reduce(factor, box=reduce_box)
+                    if callable(self.reduce)
+                    else Image.reduce(self, factor, box=reduce_box)
+                )
                 box = (
                     (box[0] - reduce_box[0]) / factor_x,
                     (box[1] - reduce_box[1]) / factor_y,
@@ -2170,7 +2364,11 @@ class Image:
 
         return self._new(self.im.resize(size, resample, box))
 
-    def reduce(self, factor, box=None):
+    def reduce(
+        self,
+        factor: int | tuple[int, int],
+        box: tuple[int, int, int, int] | None = None,
+    ) -> Image:
         """
         Returns a copy of the image reduced ``factor`` times.
         If the size of the image is not dividable by ``factor``,
@@ -2188,8 +2386,6 @@ class Image:
 
         if box is None:
             box = (0, 0) + self.size
-        else:
-            box = tuple(box)
 
         if factor == (1, 1) and box == (0, 0) + self.size:
             return self.copy()
@@ -2205,13 +2401,13 @@ class Image:
 
     def rotate(
         self,
-        angle,
-        resample=Resampling.NEAREST,
-        expand=0,
-        center=None,
-        translate=None,
-        fillcolor=None,
-    ):
+        angle: float,
+        resample: Resampling = Resampling.NEAREST,
+        expand: int | bool = False,
+        center: tuple[float, float] | None = None,
+        translate: tuple[int, int] | None = None,
+        fillcolor: float | tuple[float, ...] | str | None = None,
+    ) -> Image:
         """
         Returns a rotated copy of this image.  This method returns a
         copy of this image, rotated the given number of degrees counter
@@ -2276,10 +2472,7 @@ class Image:
         else:
             post_trans = translate
         if center is None:
-            # FIXME These should be rounded to ints?
-            rotn_center = (w / 2.0, h / 2.0)
-        else:
-            rotn_center = center
+            center = (w / 2, h / 2)
 
         angle = -math.radians(angle)
         matrix = [
@@ -2291,24 +2484,24 @@ class Image:
             0.0,
         ]
 
-        def transform(x, y, matrix):
+        def transform(x: float, y: float, matrix: list[float]) -> tuple[float, float]:
             (a, b, c, d, e, f) = matrix
             return a * x + b * y + c, d * x + e * y + f
 
         matrix[2], matrix[5] = transform(
-            -rotn_center[0] - post_trans[0], -rotn_center[1] - post_trans[1], matrix
+            -center[0] - post_trans[0], -center[1] - post_trans[1], matrix
         )
-        matrix[2] += rotn_center[0]
-        matrix[5] += rotn_center[1]
+        matrix[2] += center[0]
+        matrix[5] += center[1]
 
         if expand:
             # calculate output size
             xx = []
             yy = []
             for x, y in ((0, 0), (w, 0), (w, h), (0, h)):
-                x, y = transform(x, y, matrix)
-                xx.append(x)
-                yy.append(y)
+                transformed_x, transformed_y = transform(x, y, matrix)
+                xx.append(transformed_x)
+                yy.append(transformed_y)
             nw = math.ceil(max(xx)) - math.floor(min(xx))
             nh = math.ceil(max(yy)) - math.floor(min(yy))
 
@@ -2322,7 +2515,9 @@ class Image:
             (w, h), Transform.AFFINE, matrix, resample, fillcolor=fillcolor
         )
 
-    def save(self, fp, format=None, **params):
+    def save(
+        self, fp: StrOrBytesPath | IO[bytes], format: str | None = None, **params: Any
+    ) -> None:
         """
         Saves this image under the given filename.  If no format is
         specified, the format to use is determined from the filename
@@ -2339,7 +2534,7 @@ class Image:
         implement the ``seek``, ``tell``, and ``write``
         methods, and be opened in binary mode.
 
-        :param fp: A filename (string), pathlib.Path object or file object.
+        :param fp: A filename (string), os.PathLike object or file object.
         :param format: Optional format override.  If omitted, the
            format to use is determined from the filename extension.
            If a file object was used instead of a filename, this
@@ -2352,13 +2547,10 @@ class Image:
            may have been created, and may contain partial data.
         """
 
-        filename = ""
+        filename: str | bytes = ""
         open_fp = False
-        if isinstance(fp, Path):
-            filename = str(fp)
-            open_fp = True
-        elif is_path(fp):
-            filename = fp
+        if is_path(fp):
+            filename = os.fspath(fp)
             open_fp = True
         elif fp == sys.stdout:
             try:
@@ -2367,18 +2559,19 @@ class Image:
                 pass
         if not filename and hasattr(fp, "name") and is_path(fp.name):
             # only set the name for metadata purposes
-            filename = fp.name
+            filename = os.fspath(fp.name)
 
         # may mutate self!
         self._ensure_mutable()
 
         save_all = params.pop("save_all", False)
         self.encoderinfo = params
-        self.encoderconfig = ()
+        self.encoderconfig: tuple[Any, ...] = ()
 
         preinit()
 
-        ext = os.path.splitext(filename)[1].lower()
+        filename_ext = os.path.splitext(filename)[1].lower()
+        ext = filename_ext.decode() if isinstance(filename_ext, bytes) else filename_ext
 
         if not format:
             if ext not in EXTENSION:
@@ -2405,6 +2598,8 @@ class Image:
                 fp = builtins.open(filename, "r+b")
             else:
                 fp = builtins.open(filename, "w+b")
+        else:
+            fp = cast(IO[bytes], fp)
 
         try:
             save_handler(self, fp, filename)
@@ -2420,7 +2615,7 @@ class Image:
         if open_fp:
             fp.close()
 
-    def seek(self, frame):
+    def seek(self, frame: int) -> None:
         """
         Seeks to the given frame in this sequence file. If you seek
         beyond the end of the sequence, the method raises an
@@ -2439,9 +2634,10 @@ class Image:
 
         # overridden by file handlers
         if frame != 0:
-            raise EOFError
+            msg = "no more images in file"
+            raise EOFError(msg)
 
-    def show(self, title=None):
+    def show(self, title: str | None = None) -> None:
         """
         Displays this image. This method is mainly intended for debugging purposes.
 
@@ -2463,7 +2659,7 @@ class Image:
 
         _show(self, title=title)
 
-    def split(self):
+    def split(self) -> tuple[Image, ...]:
         """
         Split this image into individual bands. This method returns a
         tuple of individual image bands from an image. For example,
@@ -2479,12 +2675,10 @@ class Image:
 
         self.load()
         if self.im.bands == 1:
-            ims = [self.copy()]
-        else:
-            ims = map(self._new, self.im.split())
-        return tuple(ims)
+            return (self.copy(),)
+        return tuple(map(self._new, self.im.split()))
 
-    def getchannel(self, channel):
+    def getchannel(self, channel: int | str) -> Image:
         """
         Returns an image containing a single channel of the source image.
 
@@ -2506,7 +2700,7 @@ class Image:
 
         return self._new(self.im.getband(channel))
 
-    def tell(self):
+    def tell(self) -> int:
         """
         Returns the current frame number. See :py:meth:`~PIL.Image.Image.seek`.
 
@@ -2517,7 +2711,12 @@ class Image:
         """
         return 0
 
-    def thumbnail(self, size, resample=Resampling.BICUBIC, reducing_gap=2.0):
+    def thumbnail(
+        self,
+        size: tuple[float, float],
+        resample: Resampling = Resampling.BICUBIC,
+        reducing_gap: float | None = 2.0,
+    ) -> None:
         """
         Make this image into a thumbnail.  This method modifies the
         image to contain a thumbnail version of itself, no larger than
@@ -2559,13 +2758,13 @@ class Image:
 
         provided_size = tuple(map(math.floor, size))
 
-        def preserve_aspect_ratio():
-            def round_aspect(number, key):
+        def preserve_aspect_ratio() -> tuple[int, int] | None:
+            def round_aspect(number: float, key: Callable[[int], float]) -> int:
                 return max(min(math.floor(number), math.ceil(number), key=key), 1)
 
             x, y = provided_size
             if x >= self.width and y >= self.height:
-                return
+                return None
 
             aspect = self.width / self.height
             if x / y >= aspect:
@@ -2576,44 +2775,39 @@ class Image:
                 )
             return x, y
 
+        preserved_size = preserve_aspect_ratio()
+        if preserved_size is None:
+            return
+        final_size = preserved_size
+
         box = None
         if reducing_gap is not None:
-            size = preserve_aspect_ratio()
-            if size is None:
-                return
-
-            res = self.draft(None, (size[0] * reducing_gap, size[1] * reducing_gap))
+            res = self.draft(
+                None, (int(size[0] * reducing_gap), int(size[1] * reducing_gap))
+            )
             if res is not None:
                 box = res[1]
-        if box is None:
-            self.load()
 
-            # load() may have changed the size of the image
-            size = preserve_aspect_ratio()
-            if size is None:
-                return
-
-        if self.size != size:
-            im = self.resize(size, resample, box=box, reducing_gap=reducing_gap)
+        if self.size != final_size:
+            im = self.resize(final_size, resample, box=box, reducing_gap=reducing_gap)
 
             self.im = im.im
-            self._size = size
-            self.mode = self.im.mode
+            self._size = final_size
+            self._mode = self.im.mode
 
         self.readonly = 0
-        self.pyaccess = None
 
     # FIXME: the different transform methods need further explanation
     # instead of bloating the method docs, add a separate chapter.
     def transform(
         self,
-        size,
-        method,
-        data=None,
-        resample=Resampling.NEAREST,
-        fill=1,
-        fillcolor=None,
-    ):
+        size: tuple[int, int],
+        method: Transform | ImageTransformHandler | SupportsGetData,
+        data: Sequence[Any] | None = None,
+        resample: int = Resampling.NEAREST,
+        fill: int = 1,
+        fillcolor: float | tuple[float, ...] | str | None = None,
+    ) -> Image:
         """
         Transforms this image.  This method creates a new image with the
         given size, and the same mode as the original, and copies data
@@ -2636,6 +2830,10 @@ class Image:
                 def transform(self, size, data, resample, fill=1):
                     # Return result
 
+          Implementations of :py:class:`~PIL.Image.ImageTransformHandler`
+          for some of the :py:class:`Transform` methods are provided
+          in :py:mod:`~PIL.ImageTransform`.
+
           It may also be an object with a ``method.getdata`` method
           that returns a tuple supplying new ``method`` and ``data`` values::
 
@@ -2696,8 +2894,14 @@ class Image:
         return im
 
     def __transformer(
-        self, box, image, method, data, resample=Resampling.NEAREST, fill=1
-    ):
+        self,
+        box: tuple[int, int, int, int],
+        image: Image,
+        method: Transform,
+        data: Sequence[float],
+        resample: int = Resampling.NEAREST,
+        fill: bool = True,
+    ) -> None:
         w = box[2] - box[0]
         h = box[3] - box[1]
 
@@ -2746,11 +2950,12 @@ class Image:
             Resampling.BICUBIC,
         ):
             if resample in (Resampling.BOX, Resampling.HAMMING, Resampling.LANCZOS):
-                msg = {
+                unusable: dict[int, str] = {
                     Resampling.BOX: "Image.Resampling.BOX",
                     Resampling.HAMMING: "Image.Resampling.HAMMING",
                     Resampling.LANCZOS: "Image.Resampling.LANCZOS",
-                }[resample] + f" ({resample}) cannot be used."
+                }
+                msg = unusable[resample] + f" ({resample}) cannot be used."
             else:
                 msg = f"Unknown resampling filter ({resample})."
 
@@ -2762,7 +2967,7 @@ class Image:
                     (Resampling.BICUBIC, "Image.Resampling.BICUBIC"),
                 )
             ]
-            msg += " Use " + ", ".join(filters[:-1]) + " or " + filters[-1]
+            msg += f" Use {', '.join(filters[:-1])} or {filters[-1]}"
             raise ValueError(msg)
 
         image.load()
@@ -2772,9 +2977,9 @@ class Image:
         if image.mode in ("1", "P"):
             resample = Resampling.NEAREST
 
-        self.im.transform2(box, image.im, method, data, resample, fill)
+        self.im.transform(box, image.im, method, data, resample, fill)
 
-    def transpose(self, method):
+    def transpose(self, method: Transpose) -> Image:
         """
         Transpose image (flip or rotate in 90 degree steps)
 
@@ -2788,7 +2993,7 @@ class Image:
         self.load()
         return self._new(self.im.transpose(method))
 
-    def effect_spread(self, distance):
+    def effect_spread(self, distance: int) -> Image:
         """
         Randomly spread pixels in an image.
 
@@ -2797,7 +3002,7 @@ class Image:
         self.load()
         return self._new(self.im.effect_spread(distance))
 
-    def toqimage(self):
+    def toqimage(self) -> ImageQt.ImageQt:
         """Returns a QImage copy of this image"""
         from . import ImageQt
 
@@ -2806,7 +3011,7 @@ class Image:
             raise ImportError(msg)
         return ImageQt.toqimage(self)
 
-    def toqpixmap(self):
+    def toqpixmap(self) -> ImageQt.QPixmap:
         """Returns a QPixmap copy of this image"""
         from . import ImageQt
 
@@ -2826,7 +3031,9 @@ class ImagePointHandler:
     (for use with :py:meth:`~PIL.Image.Image.point`)
     """
 
-    pass
+    @abc.abstractmethod
+    def point(self, im: Image) -> Image:
+        pass
 
 
 class ImageTransformHandler:
@@ -2835,7 +3042,14 @@ class ImageTransformHandler:
     (for use with :py:meth:`~PIL.Image.Image.transform`)
     """
 
-    pass
+    @abc.abstractmethod
+    def transform(
+        self,
+        size: tuple[int, int],
+        image: Image,
+        **options: Any,
+    ) -> Image:
+        pass
 
 
 # --------------------------------------------------------------------
@@ -2845,34 +3059,36 @@ class ImageTransformHandler:
 # Debugging
 
 
-def _wedge():
-    """Create greyscale wedge (for debugging only)"""
+def _wedge() -> Image:
+    """Create grayscale wedge (for debugging only)"""
 
     return Image()._new(core.wedge("L"))
 
 
-def _check_size(size):
+def _check_size(size: Any) -> None:
     """
     Common check to enforce type and sanity check on size tuples
 
     :param size: Should be a 2 tuple of (width, height)
-    :returns: True, or raises a ValueError
+    :returns: None, or raises a ValueError
     """
 
     if not isinstance(size, (list, tuple)):
-        msg = "Size must be a tuple"
+        msg = "Size must be a list or tuple"
         raise ValueError(msg)
     if len(size) != 2:
-        msg = "Size must be a tuple of length 2"
+        msg = "Size must be a sequence of length 2"
         raise ValueError(msg)
     if size[0] < 0 or size[1] < 0:
         msg = "Width and height must be >= 0"
         raise ValueError(msg)
 
-    return True
 
-
-def new(mode, size, color=0):
+def new(
+    mode: str,
+    size: tuple[int, int] | list[int],
+    color: float | tuple[float, ...] | str | None = 0,
+) -> Image:
     """
     Creates a new image with the given mode and size.
 
@@ -2882,12 +3098,15 @@ def new(mode, size, color=0):
     :param color: What color to use for the image.  Default is black.
        If given, this should be a single integer or floating point value
        for single-band modes, and a tuple for multi-band modes (one value
-       per band).  When creating RGB images, you can also use color
+       per band).  When creating RGB or HSV images, you can also use color
        strings as supported by the ImageColor module.  If the color is
        None, the image is not initialised.
     :returns: An :py:class:`~PIL.Image.Image` object.
     """
 
+    if mode in ("BGR;15", "BGR;16", "BGR;24"):
+        deprecate(mode, 12)
+
     _check_size(size)
 
     if color is None:
@@ -2902,16 +3121,28 @@ def new(mode, size, color=0):
         color = ImageColor.getcolor(color, mode)
 
     im = Image()
-    if mode == "P" and isinstance(color, (list, tuple)) and len(color) in [3, 4]:
-        # RGB or RGBA value for a P image
-        from . import ImagePalette
+    if (
+        mode == "P"
+        and isinstance(color, (list, tuple))
+        and all(isinstance(i, int) for i in color)
+    ):
+        color_ints: tuple[int, ...] = cast(tuple[int, ...], tuple(color))
+        if len(color_ints) == 3 or len(color_ints) == 4:
+            # RGB or RGBA value for a P image
+            from . import ImagePalette
 
-        im.palette = ImagePalette.ImagePalette()
-        color = im.palette.getcolor(color)
+            im.palette = ImagePalette.ImagePalette()
+            color = im.palette.getcolor(color_ints)
     return im._new(core.fill(mode, size, color))
 
 
-def frombytes(mode, size, data, decoder_name="raw", *args):
+def frombytes(
+    mode: str,
+    size: tuple[int, int],
+    data: bytes | bytearray | SupportsArrayInterface,
+    decoder_name: str = "raw",
+    *args: Any,
+) -> Image:
     """
     Creates a copy of an image memory from pixel data in a buffer.
 
@@ -2937,19 +3168,27 @@ def frombytes(mode, size, data, decoder_name="raw", *args):
 
     _check_size(size)
 
-    # may pass tuple instead of argument list
-    if len(args) == 1 and isinstance(args[0], tuple):
-        args = args[0]
-
-    if decoder_name == "raw" and args == ():
-        args = mode
-
     im = new(mode, size)
-    im.frombytes(data, decoder_name, args)
+    if im.width != 0 and im.height != 0:
+        decoder_args: Any = args
+        if len(decoder_args) == 1 and isinstance(decoder_args[0], tuple):
+            # may pass tuple instead of argument list
+            decoder_args = decoder_args[0]
+
+        if decoder_name == "raw" and decoder_args == ():
+            decoder_args = mode
+
+        im.frombytes(data, decoder_name, decoder_args)
     return im
 
 
-def frombuffer(mode, size, data, decoder_name="raw", *args):
+def frombuffer(
+    mode: str,
+    size: tuple[int, int],
+    data: bytes | SupportsArrayInterface,
+    decoder_name: str = "raw",
+    *args: Any,
+) -> Image:
     """
     Creates an image memory referencing pixel data in a byte buffer.
 
@@ -2962,11 +3201,10 @@ def frombuffer(mode, size, data, decoder_name="raw", *args):
     If you have an entire image file in a string, wrap it in a
     :py:class:`~io.BytesIO` object, and use :py:func:`~PIL.Image.open` to load it.
 
-    In the current version, the default parameters used for the "raw" decoder
-    differs from that used for :py:func:`~PIL.Image.frombytes`.  This is a
-    bug, and will probably be fixed in a future release.  The current release
-    issues a warning if you do this; to disable the warning, you should provide
-    the full set of parameters.  See below for details.
+    The default parameters used for the "raw" decoder differs from that used for
+    :py:func:`~PIL.Image.frombytes`. This is a bug, and will probably be fixed in a
+    future release. The current release issues a warning if you do this; to disable
+    the warning, you should provide the full set of parameters. See below for details.
 
     :param mode: The image mode. See: :ref:`concept-modes`.
     :param size: The image size.
@@ -2994,7 +3232,7 @@ def frombuffer(mode, size, data, decoder_name="raw", *args):
         if args == ():
             args = mode, 0, 1
         if args[0] in _MAPMODES:
-            im = new(mode, (1, 1))
+            im = new(mode, (0, 0))
             im = im._new(core.map_buffer(data, size, decoder_name, 0, args))
             if mode == "P":
                 from . import ImagePalette
@@ -3006,7 +3244,17 @@ def frombuffer(mode, size, data, decoder_name="raw", *args):
     return frombytes(mode, size, data, decoder_name, args)
 
 
-def fromarray(obj, mode=None):
+class SupportsArrayInterface(Protocol):
+    """
+    An object that has an ``__array_interface__`` dictionary.
+    """
+
+    @property
+    def __array_interface__(self) -> dict[str, Any]:
+        raise NotImplementedError()
+
+
+def fromarray(obj: SupportsArrayInterface, mode: str | None = None) -> Image:
     """
     Creates an image memory from an object exporting the array interface
     (using the buffer protocol)::
@@ -3066,7 +3314,8 @@ def fromarray(obj, mode=None):
         try:
             mode, rawmode = _fromarray_typemap[typekey]
         except KeyError as e:
-            msg = "Cannot handle this data type: %s, %s" % typekey
+            typekey_shape, typestr = typekey
+            msg = f"Cannot handle this data type: {typekey_shape}, {typestr}"
             raise TypeError(msg) from e
     else:
         rawmode = mode
@@ -3084,13 +3333,16 @@ def fromarray(obj, mode=None):
     if strides is not None:
         if hasattr(obj, "tobytes"):
             obj = obj.tobytes()
-        else:
+        elif hasattr(obj, "tostring"):
             obj = obj.tostring()
+        else:
+            msg = "'strides' requires either tobytes() or tostring()"
+            raise ValueError(msg)
 
     return frombuffer(mode, size, obj, "raw", rawmode, 0, 1)
 
 
-def fromqimage(im):
+def fromqimage(im: ImageQt.QImage) -> ImageFile.ImageFile:
     """Creates an image instance from a QImage image"""
     from . import ImageQt
 
@@ -3100,7 +3352,7 @@ def fromqimage(im):
     return ImageQt.fromqimage(im)
 
 
-def fromqpixmap(im):
+def fromqpixmap(im: ImageQt.QPixmap) -> ImageFile.ImageFile:
     """Creates an image instance from a QPixmap image"""
     from . import ImageQt
 
@@ -3132,16 +3384,16 @@ _fromarray_typemap = {
     ((1, 1, 3), "|u1"): ("RGB", "RGB"),
     ((1, 1, 4), "|u1"): ("RGBA", "RGBA"),
     # shortcuts:
-    ((1, 1), _ENDIAN + "i4"): ("I", "I"),
-    ((1, 1), _ENDIAN + "f4"): ("F", "F"),
+    ((1, 1), f"{_ENDIAN}i4"): ("I", "I"),
+    ((1, 1), f"{_ENDIAN}f4"): ("F", "F"),
 }
 
 
-def _decompression_bomb_check(size):
+def _decompression_bomb_check(size: tuple[int, int]) -> None:
     if MAX_IMAGE_PIXELS is None:
         return
 
-    pixels = size[0] * size[1]
+    pixels = max(1, size[0]) * max(1, size[1])
 
     if pixels > 2 * MAX_IMAGE_PIXELS:
         msg = (
@@ -3158,7 +3410,11 @@ def _decompression_bomb_check(size):
         )
 
 
-def open(fp, mode="r", formats=None):
+def open(
+    fp: StrOrBytesPath | IO[bytes],
+    mode: Literal["r"] = "r",
+    formats: list[str] | tuple[str, ...] | None = None,
+) -> ImageFile.ImageFile:
     """
     Opens and identifies the given image file.
 
@@ -3168,10 +3424,11 @@ def open(fp, mode="r", formats=None):
     :py:meth:`~PIL.Image.Image.load` method).  See
     :py:func:`~PIL.Image.new`. See :ref:`file-handling`.
 
-    :param fp: A filename (string), pathlib.Path object or a file object.
+    :param fp: A filename (string), os.PathLike object or a file object.
        The file object must implement ``file.read``,
        ``file.seek``, and ``file.tell`` methods,
-       and be opened in binary mode.
+       and be opened in binary mode. The file object will also seek to zero
+       before reading.
     :param mode: The mode.  If given, this argument must be "r".
     :param formats: A list or tuple of formats to attempt to load the file in.
        This can be used to restrict the set of formats checked.
@@ -3188,10 +3445,10 @@ def open(fp, mode="r", formats=None):
     """
 
     if mode != "r":
-        msg = f"bad mode {repr(mode)}"
+        msg = f"bad mode {repr(mode)}"  # type: ignore[unreachable]
         raise ValueError(msg)
     elif isinstance(fp, io.StringIO):
-        msg = (
+        msg = (  # type: ignore[unreachable]
             "StringIO cannot be used to open an image. "
             "Binary data must be used instead."
         )
@@ -3200,19 +3457,19 @@ def open(fp, mode="r", formats=None):
     if formats is None:
         formats = ID
     elif not isinstance(formats, (list, tuple)):
-        msg = "formats must be a list or tuple"
+        msg = "formats must be a list or tuple"  # type: ignore[unreachable]
         raise TypeError(msg)
 
     exclusive_fp = False
-    filename = ""
-    if isinstance(fp, Path):
-        filename = str(fp.resolve())
-    elif is_path(fp):
-        filename = fp
+    filename: str | bytes = ""
+    if is_path(fp):
+        filename = os.fspath(fp)
 
     if filename:
         fp = builtins.open(filename, "rb")
         exclusive_fp = True
+    else:
+        fp = cast(IO[bytes], fp)
 
     try:
         fp.seek(0)
@@ -3224,9 +3481,14 @@ def open(fp, mode="r", formats=None):
 
     preinit()
 
-    accept_warnings = []
+    warning_messages: list[str] = []
 
-    def _open_core(fp, filename, prefix, formats):
+    def _open_core(
+        fp: IO[bytes],
+        filename: str | bytes,
+        prefix: bytes,
+        formats: list[str] | tuple[str, ...],
+    ) -> ImageFile.ImageFile | None:
         for i in formats:
             i = i.upper()
             if i not in OPEN:
@@ -3234,18 +3496,16 @@ def open(fp, mode="r", formats=None):
             try:
                 factory, accept = OPEN[i]
                 result = not accept or accept(prefix)
-                if type(result) in [str, bytes]:
-                    accept_warnings.append(result)
+                if isinstance(result, str):
+                    warning_messages.append(result)
                 elif result:
                     fp.seek(0)
                     im = factory(fp, filename)
                     _decompression_bomb_check(im.size)
                     return im
-            except (SyntaxError, IndexError, TypeError, struct.error):
-                # Leave disabled by default, spams the logs with image
-                # opening failures that are entirely expected.
-                # logger.debug("", exc_info=True)
-                continue
+            except (SyntaxError, IndexError, TypeError, struct.error) as e:
+                if WARN_POSSIBLE_FORMATS:
+                    warning_messages.append(i + " opening failed. " + str(e))
             except BaseException:
                 if exclusive_fp:
                     fp.close()
@@ -3255,7 +3515,7 @@ def open(fp, mode="r", formats=None):
     im = _open_core(fp, filename, prefix, formats)
 
     if im is None and formats is ID:
-        checked_formats = formats.copy()
+        checked_formats = ID.copy()
         if init():
             im = _open_core(
                 fp,
@@ -3270,7 +3530,7 @@ def open(fp, mode="r", formats=None):
 
     if exclusive_fp:
         fp.close()
-    for message in accept_warnings:
+    for message in warning_messages:
         warnings.warn(message)
     msg = "cannot identify image file %r" % (filename if filename else fp)
     raise UnidentifiedImageError(msg)
@@ -3280,7 +3540,7 @@ def open(fp, mode="r", formats=None):
 # Image processing.
 
 
-def alpha_composite(im1, im2):
+def alpha_composite(im1: Image, im2: Image) -> Image:
     """
     Alpha composite im2 over im1.
 
@@ -3295,7 +3555,7 @@ def alpha_composite(im1, im2):
     return im1._new(core.alpha_composite(im1.im, im2.im))
 
 
-def blend(im1, im2, alpha):
+def blend(im1: Image, im2: Image, alpha: float) -> Image:
     """
     Creates a new image by interpolating between two input images, using
     a constant alpha::
@@ -3318,7 +3578,7 @@ def blend(im1, im2, alpha):
     return im1._new(core.blend(im1.im, im2.im, alpha))
 
 
-def composite(image1, image2, mask):
+def composite(image1: Image, image2: Image, mask: Image) -> Image:
     """
     Create composite image by blending images using a transparency mask.
 
@@ -3335,7 +3595,7 @@ def composite(image1, image2, mask):
     return image
 
 
-def eval(image, *args):
+def eval(image: Image, *args: Callable[[int], float]) -> Image:
     """
     Applies the function (which should take one argument) to each pixel
     in the given image. If the image has more than one band, the same
@@ -3351,7 +3611,7 @@ def eval(image, *args):
     return image.point(args[0])
 
 
-def merge(mode, bands):
+def merge(mode: str, bands: Sequence[Image]) -> Image:
     """
     Merge a set of single band images into a new multiband image.
 
@@ -3382,7 +3642,14 @@ def merge(mode, bands):
 # Plugin registry
 
 
-def register_open(id, factory, accept=None):
+def register_open(
+    id: str,
+    factory: (
+        Callable[[IO[bytes], str | bytes], ImageFile.ImageFile]
+        | type[ImageFile.ImageFile]
+    ),
+    accept: Callable[[bytes], bool | str] | None = None,
+) -> None:
     """
     Register an image file plugin.  This function should not be used
     in application code.
@@ -3398,10 +3665,14 @@ def register_open(id, factory, accept=None):
     OPEN[id] = factory, accept
 
 
-def register_mime(id, mimetype):
+def register_mime(id: str, mimetype: str) -> None:
     """
-    Registers an image MIME type.  This function should not be used
-    in application code.
+    Registers an image MIME type by populating ``Image.MIME``. This function
+    should not be used in application code.
+
+    ``Image.MIME`` provides a mapping from image format identifiers to mime
+    formats, but :py:meth:`~PIL.ImageFile.ImageFile.get_format_mimetype` can
+    provide a different result for specific images.
 
     :param id: An image format identifier.
     :param mimetype: The image MIME type for this format.
@@ -3409,7 +3680,9 @@ def register_mime(id, mimetype):
     MIME[id.upper()] = mimetype
 
 
-def register_save(id, driver):
+def register_save(
+    id: str, driver: Callable[[Image, IO[bytes], str | bytes], None]
+) -> None:
     """
     Registers an image save function.  This function should not be
     used in application code.
@@ -3420,7 +3693,9 @@ def register_save(id, driver):
     SAVE[id.upper()] = driver
 
 
-def register_save_all(id, driver):
+def register_save_all(
+    id: str, driver: Callable[[Image, IO[bytes], str | bytes], None]
+) -> None:
     """
     Registers an image function to save all the frames
     of a multiframe format.  This function should not be
@@ -3432,7 +3707,7 @@ def register_save_all(id, driver):
     SAVE_ALL[id.upper()] = driver
 
 
-def register_extension(id, extension):
+def register_extension(id: str, extension: str) -> None:
     """
     Registers an image extension.  This function should not be
     used in application code.
@@ -3443,7 +3718,7 @@ def register_extension(id, extension):
     EXTENSION[extension.lower()] = id.upper()
 
 
-def register_extensions(id, extensions):
+def register_extensions(id: str, extensions: list[str]) -> None:
     """
     Registers image extensions.  This function should not be
     used in application code.
@@ -3455,7 +3730,7 @@ def register_extensions(id, extensions):
         register_extension(id, extension)
 
 
-def registered_extensions():
+def registered_extensions() -> dict[str, str]:
     """
     Returns a dictionary containing all file extensions belonging
     to registered plugins
@@ -3464,28 +3739,26 @@ def registered_extensions():
     return EXTENSION
 
 
-def register_decoder(name, decoder):
+def register_decoder(name: str, decoder: type[ImageFile.PyDecoder]) -> None:
     """
     Registers an image decoder.  This function should not be
     used in application code.
 
     :param name: The name of the decoder
-    :param decoder: A callable(mode, args) that returns an
-                    ImageFile.PyDecoder object
+    :param decoder: An ImageFile.PyDecoder object
 
     .. versionadded:: 4.1.0
     """
     DECODERS[name] = decoder
 
 
-def register_encoder(name, encoder):
+def register_encoder(name: str, encoder: type[ImageFile.PyEncoder]) -> None:
     """
     Registers an image encoder.  This function should not be
     used in application code.
 
     :param name: The name of the encoder
-    :param encoder: A callable(mode, args) that returns an
-                    ImageFile.PyEncoder object
+    :param encoder: An ImageFile.PyEncoder object
 
     .. versionadded:: 4.1.0
     """
@@ -3496,7 +3769,7 @@ def register_encoder(name, encoder):
 # Simple display support.
 
 
-def _show(image, **options):
+def _show(image: Image, **options: Any) -> None:
     from . import ImageShow
 
     ImageShow.show(image, **options)
@@ -3506,7 +3779,9 @@ def _show(image, **options):
 # Effects
 
 
-def effect_mandelbrot(size, extent, quality):
+def effect_mandelbrot(
+    size: tuple[int, int], extent: tuple[float, float, float, float], quality: int
+) -> Image:
     """
     Generate a Mandelbrot set covering the given extent.
 
@@ -3519,7 +3794,7 @@ def effect_mandelbrot(size, extent, quality):
     return Image()._new(core.effect_mandelbrot(size, extent, quality))
 
 
-def effect_noise(size, sigma):
+def effect_noise(size: tuple[int, int], sigma: float) -> Image:
     """
     Generate Gaussian noise centered around 128.
 
@@ -3530,7 +3805,7 @@ def effect_noise(size, sigma):
     return Image()._new(core.effect_noise(size, sigma))
 
 
-def linear_gradient(mode):
+def linear_gradient(mode: str) -> Image:
     """
     Generate 256x256 linear gradient from black to white, top to bottom.
 
@@ -3539,7 +3814,7 @@ def linear_gradient(mode):
     return Image()._new(core.linear_gradient(mode))
 
 
-def radial_gradient(mode):
+def radial_gradient(mode: str) -> Image:
     """
     Generate 256x256 radial gradient from black to white, centre to edge.
 
@@ -3552,19 +3827,18 @@ def radial_gradient(mode):
 # Resources
 
 
-def _apply_env_variables(env=None):
-    if env is None:
-        env = os.environ
+def _apply_env_variables(env: dict[str, str] | None = None) -> None:
+    env_dict = env if env is not None else os.environ
 
     for var_name, setter in [
         ("PILLOW_ALIGNMENT", core.set_alignment),
         ("PILLOW_BLOCK_SIZE", core.set_block_size),
         ("PILLOW_BLOCKS_MAX", core.set_blocks_max),
     ]:
-        if var_name not in env:
+        if var_name not in env_dict:
             continue
 
-        var = env[var_name].lower()
+        var = env_dict[var_name].lower()
 
         units = 1
         for postfix, mul in [("k", 1024), ("m", 1024 * 1024)]:
@@ -3573,13 +3847,13 @@ def _apply_env_variables(env=None):
                 var = var[: -len(postfix)]
 
         try:
-            var = int(var) * units
+            var_int = int(var) * units
         except ValueError:
             warnings.warn(f"{var_name} is not int")
             continue
 
         try:
-            setter(var)
+            setter(var_int)
         except ValueError as e:
             warnings.warn(f"{var_name}: {e}")
 
@@ -3588,7 +3862,13 @@ _apply_env_variables()
 atexit.register(core.clear_cache)
 
 
-class Exif(MutableMapping):
+if TYPE_CHECKING:
+    _ExifBase = MutableMapping[int, Any]
+else:
+    _ExifBase = MutableMapping
+
+
+class Exif(_ExifBase):
     """
     This class provides read and write access to EXIF image data::
 
@@ -3622,17 +3902,18 @@ class Exif(MutableMapping):
       print(gps_ifd[ExifTags.GPS.GPSDateStamp])  # 1999:99:99 99:99:99
     """
 
-    endian = None
+    endian: str | None = None
     bigtiff = False
+    _loaded = False
 
-    def __init__(self):
-        self._data = {}
-        self._hidden_data = {}
-        self._ifds = {}
-        self._info = None
-        self._loaded_exif = None
+    def __init__(self) -> None:
+        self._data: dict[int, Any] = {}
+        self._hidden_data: dict[int, Any] = {}
+        self._ifds: dict[int, dict[int, Any]] = {}
+        self._info: TiffImagePlugin.ImageFileDirectory_v2 | None = None
+        self._loaded_exif: bytes | None = None
 
-    def _fixup(self, value):
+    def _fixup(self, value: Any) -> Any:
         try:
             if len(value) == 1 and isinstance(value, tuple):
                 return value[0]
@@ -3640,26 +3921,28 @@ class Exif(MutableMapping):
             pass
         return value
 
-    def _fixup_dict(self, src_dict):
+    def _fixup_dict(self, src_dict: dict[int, Any]) -> dict[int, Any]:
         # Helper function
         # returns a dict with any single item tuples/lists as individual values
         return {k: self._fixup(v) for k, v in src_dict.items()}
 
-    def _get_ifd_dict(self, offset):
+    def _get_ifd_dict(
+        self, offset: int, group: int | None = None
+    ) -> dict[int, Any] | None:
         try:
             # an offset pointer to the location of the nested embedded IFD.
             # It should be a long, but may be corrupted.
             self.fp.seek(offset)
         except (KeyError, TypeError):
-            pass
+            return None
         else:
             from . import TiffImagePlugin
 
-            info = TiffImagePlugin.ImageFileDirectory_v2(self.head)
+            info = TiffImagePlugin.ImageFileDirectory_v2(self.head, group=group)
             info.load(self.fp)
-            return self._fixup_dict(info)
+            return self._fixup_dict(dict(info))
 
-    def _get_head(self):
+    def _get_head(self) -> bytes:
         version = b"\x2B" if self.bigtiff else b"\x2A"
         if self.endian == "<":
             head = b"II" + version + b"\x00" + o32le(8)
@@ -3670,7 +3953,7 @@ class Exif(MutableMapping):
             head += b"\x00\x00\x00\x00"
         return head
 
-    def load(self, data):
+    def load(self, data: bytes) -> None:
         # Extract EXIF information.  This is highly experimental,
         # and is likely to be replaced with something better in a future
         # version.
@@ -3683,13 +3966,13 @@ class Exif(MutableMapping):
         self._data.clear()
         self._hidden_data.clear()
         self._ifds.clear()
-        if data and data.startswith(b"Exif\x00\x00"):
+        while data and data.startswith(b"Exif\x00\x00"):
             data = data[6:]
         if not data:
             self._info = None
             return
 
-        self.fp = io.BytesIO(data)
+        self.fp: IO[bytes] = io.BytesIO(data)
         self.head = self.fp.read(8)
         # process dictionary
         from . import TiffImagePlugin
@@ -3699,7 +3982,7 @@ class Exif(MutableMapping):
         self.fp.seek(self._info.next)
         self._info.load(self.fp)
 
-    def load_from_fp(self, fp, offset=None):
+    def load_from_fp(self, fp: IO[bytes], offset: int | None = None) -> None:
         self._loaded_exif = None
         self._data.clear()
         self._hidden_data.clear()
@@ -3718,27 +4001,28 @@ class Exif(MutableMapping):
             self.endian = self._info._endian
         if offset is None:
             offset = self._info.next
+        self.fp.tell()
         self.fp.seek(offset)
         self._info.load(self.fp)
 
-    def _get_merged_dict(self):
+    def _get_merged_dict(self) -> dict[int, Any]:
         merged_dict = dict(self)
 
         # get EXIF extension
         if ExifTags.IFD.Exif in self:
-            ifd = self._get_ifd_dict(self[ExifTags.IFD.Exif])
+            ifd = self._get_ifd_dict(self[ExifTags.IFD.Exif], ExifTags.IFD.Exif)
             if ifd:
                 merged_dict.update(ifd)
 
         # GPS
         if ExifTags.IFD.GPSInfo in self:
             merged_dict[ExifTags.IFD.GPSInfo] = self._get_ifd_dict(
-                self[ExifTags.IFD.GPSInfo]
+                self[ExifTags.IFD.GPSInfo], ExifTags.IFD.GPSInfo
             )
 
         return merged_dict
 
-    def tobytes(self, offset=8):
+    def tobytes(self, offset: int = 8) -> bytes:
         from . import TiffImagePlugin
 
         head = self._get_head()
@@ -3759,15 +4043,19 @@ class Exif(MutableMapping):
             ifd[tag] = value
         return b"Exif\x00\x00" + head + ifd.tobytes(offset)
 
-    def get_ifd(self, tag):
+    def get_ifd(self, tag: int) -> dict[int, Any]:
         if tag not in self._ifds:
             if tag == ExifTags.IFD.IFD1:
                 if self._info is not None and self._info.next != 0:
-                    self._ifds[tag] = self._get_ifd_dict(self._info.next)
+                    ifd = self._get_ifd_dict(self._info.next)
+                    if ifd is not None:
+                        self._ifds[tag] = ifd
             elif tag in [ExifTags.IFD.Exif, ExifTags.IFD.GPSInfo]:
                 offset = self._hidden_data.get(tag, self.get(tag))
                 if offset is not None:
-                    self._ifds[tag] = self._get_ifd_dict(offset)
+                    ifd = self._get_ifd_dict(offset, tag)
+                    if ifd is not None:
+                        self._ifds[tag] = ifd
             elif tag in [ExifTags.IFD.Interop, ExifTags.IFD.Makernote]:
                 if ExifTags.IFD.Exif not in self._ifds:
                     self.get_ifd(ExifTags.IFD.Exif)
@@ -3824,7 +4112,9 @@ class Exif(MutableMapping):
                                 (offset,) = struct.unpack(">L", data)
                                 self.fp.seek(offset)
 
-                                camerainfo = {"ModelID": self.fp.read(4)}
+                                camerainfo: dict[str, int | bytes] = {
+                                    "ModelID": self.fp.read(4)
+                                }
 
                                 self.fp.read(4)
                                 # Seconds since 2000
@@ -3840,17 +4130,19 @@ class Exif(MutableMapping):
                                 ][1]
                                 camerainfo["Parallax"] = handler(
                                     ImageFileDirectory_v2(), parallax, False
-                                )
+                                )[0]
 
                                 self.fp.read(4)
                                 camerainfo["Category"] = self.fp.read(2)
 
-                                makernote = {0x1101: dict(self._fixup_dict(camerainfo))}
+                                makernote = {0x1101: camerainfo}
                         self._ifds[tag] = makernote
                 else:
                     # Interop
-                    self._ifds[tag] = self._get_ifd_dict(tag_data)
-        ifd = self._ifds.get(tag, {})
+                    ifd = self._get_ifd_dict(tag_data, tag)
+                    if ifd is not None:
+                        self._ifds[tag] = ifd
+        ifd = self._ifds.setdefault(tag, {})
         if tag == ExifTags.IFD.Exif and self._hidden_data:
             ifd = {
                 k: v
@@ -3859,13 +4151,13 @@ class Exif(MutableMapping):
             }
         return ifd
 
-    def hide_offsets(self):
+    def hide_offsets(self) -> None:
         for tag in (ExifTags.IFD.Exif, ExifTags.IFD.GPSInfo):
             if tag in self:
                 self._hidden_data[tag] = self[tag]
                 del self[tag]
 
-    def __str__(self):
+    def __str__(self) -> str:
         if self._info is not None:
             # Load all keys into self._data
             for tag in self._info:
@@ -3873,33 +4165,33 @@ class Exif(MutableMapping):
 
         return str(self._data)
 
-    def __len__(self):
+    def __len__(self) -> int:
         keys = set(self._data)
         if self._info is not None:
             keys.update(self._info)
         return len(keys)
 
-    def __getitem__(self, tag):
+    def __getitem__(self, tag: int) -> Any:
         if self._info is not None and tag not in self._data and tag in self._info:
             self._data[tag] = self._fixup(self._info[tag])
             del self._info[tag]
         return self._data[tag]
 
-    def __contains__(self, tag):
+    def __contains__(self, tag: object) -> bool:
         return tag in self._data or (self._info is not None and tag in self._info)
 
-    def __setitem__(self, tag, value):
+    def __setitem__(self, tag: int, value: Any) -> None:
         if self._info is not None and tag in self._info:
             del self._info[tag]
         self._data[tag] = value
 
-    def __delitem__(self, tag):
+    def __delitem__(self, tag: int) -> None:
         if self._info is not None and tag in self._info:
             del self._info[tag]
         else:
             del self._data[tag]
 
-    def __iter__(self):
+    def __iter__(self) -> Iterator[int]:
         keys = set(self._data)
         if self._info is not None:
             keys.update(self._info)
diff --git a/src/PIL/ImageChops.py b/src/PIL/ImageChops.py
index 701200317..29a5c995f 100644
--- a/src/PIL/ImageChops.py
+++ b/src/PIL/ImageChops.py
@@ -15,11 +15,13 @@
 # See the README file for information on usage and redistribution.
 #
 
+from __future__ import annotations
+
 from . import Image
 
 
-def constant(image, value):
-    """Fill a channel with a given grey level.
+def constant(image: Image.Image, value: int) -> Image.Image:
+    """Fill a channel with a given gray level.
 
     :rtype: :py:class:`~PIL.Image.Image`
     """
@@ -27,7 +29,7 @@ def constant(image, value):
     return Image.new("L", image.size, value)
 
 
-def duplicate(image):
+def duplicate(image: Image.Image) -> Image.Image:
     """Copy a channel. Alias for :py:meth:`PIL.Image.Image.copy`.
 
     :rtype: :py:class:`~PIL.Image.Image`
@@ -36,7 +38,7 @@ def duplicate(image):
     return image.copy()
 
 
-def invert(image):
+def invert(image: Image.Image) -> Image.Image:
     """
     Invert an image (channel). ::
 
@@ -49,7 +51,7 @@ def invert(image):
     return image._new(image.im.chop_invert())
 
 
-def lighter(image1, image2):
+def lighter(image1: Image.Image, image2: Image.Image) -> Image.Image:
     """
     Compares the two images, pixel by pixel, and returns a new image containing
     the lighter values. ::
@@ -64,7 +66,7 @@ def lighter(image1, image2):
     return image1._new(image1.im.chop_lighter(image2.im))
 
 
-def darker(image1, image2):
+def darker(image1: Image.Image, image2: Image.Image) -> Image.Image:
     """
     Compares the two images, pixel by pixel, and returns a new image containing
     the darker values. ::
@@ -79,7 +81,7 @@ def darker(image1, image2):
     return image1._new(image1.im.chop_darker(image2.im))
 
 
-def difference(image1, image2):
+def difference(image1: Image.Image, image2: Image.Image) -> Image.Image:
     """
     Returns the absolute value of the pixel-by-pixel difference between the two
     images. ::
@@ -94,7 +96,7 @@ def difference(image1, image2):
     return image1._new(image1.im.chop_difference(image2.im))
 
 
-def multiply(image1, image2):
+def multiply(image1: Image.Image, image2: Image.Image) -> Image.Image:
     """
     Superimposes two images on top of each other.
 
@@ -111,7 +113,7 @@ def multiply(image1, image2):
     return image1._new(image1.im.chop_multiply(image2.im))
 
 
-def screen(image1, image2):
+def screen(image1: Image.Image, image2: Image.Image) -> Image.Image:
     """
     Superimposes two inverted images on top of each other. ::
 
@@ -125,7 +127,7 @@ def screen(image1, image2):
     return image1._new(image1.im.chop_screen(image2.im))
 
 
-def soft_light(image1, image2):
+def soft_light(image1: Image.Image, image2: Image.Image) -> Image.Image:
     """
     Superimposes two images on top of each other using the Soft Light algorithm
 
@@ -137,7 +139,7 @@ def soft_light(image1, image2):
     return image1._new(image1.im.chop_soft_light(image2.im))
 
 
-def hard_light(image1, image2):
+def hard_light(image1: Image.Image, image2: Image.Image) -> Image.Image:
     """
     Superimposes two images on top of each other using the Hard Light algorithm
 
@@ -149,7 +151,7 @@ def hard_light(image1, image2):
     return image1._new(image1.im.chop_hard_light(image2.im))
 
 
-def overlay(image1, image2):
+def overlay(image1: Image.Image, image2: Image.Image) -> Image.Image:
     """
     Superimposes two images on top of each other using the Overlay algorithm
 
@@ -161,7 +163,9 @@ def overlay(image1, image2):
     return image1._new(image1.im.chop_overlay(image2.im))
 
 
-def add(image1, image2, scale=1.0, offset=0):
+def add(
+    image1: Image.Image, image2: Image.Image, scale: float = 1.0, offset: float = 0
+) -> Image.Image:
     """
     Adds two images, dividing the result by scale and adding the
     offset. If omitted, scale defaults to 1.0, and offset to 0.0. ::
@@ -176,7 +180,9 @@ def add(image1, image2, scale=1.0, offset=0):
     return image1._new(image1.im.chop_add(image2.im, scale, offset))
 
 
-def subtract(image1, image2, scale=1.0, offset=0):
+def subtract(
+    image1: Image.Image, image2: Image.Image, scale: float = 1.0, offset: float = 0
+) -> Image.Image:
     """
     Subtracts two images, dividing the result by scale and adding the offset.
     If omitted, scale defaults to 1.0, and offset to 0.0. ::
@@ -191,7 +197,7 @@ def subtract(image1, image2, scale=1.0, offset=0):
     return image1._new(image1.im.chop_subtract(image2.im, scale, offset))
 
 
-def add_modulo(image1, image2):
+def add_modulo(image1: Image.Image, image2: Image.Image) -> Image.Image:
     """Add two images, without clipping the result. ::
 
         out = ((image1 + image2) % MAX)
@@ -204,7 +210,7 @@ def add_modulo(image1, image2):
     return image1._new(image1.im.chop_add_modulo(image2.im))
 
 
-def subtract_modulo(image1, image2):
+def subtract_modulo(image1: Image.Image, image2: Image.Image) -> Image.Image:
     """Subtract two images, without clipping the result. ::
 
         out = ((image1 - image2) % MAX)
@@ -217,7 +223,7 @@ def subtract_modulo(image1, image2):
     return image1._new(image1.im.chop_subtract_modulo(image2.im))
 
 
-def logical_and(image1, image2):
+def logical_and(image1: Image.Image, image2: Image.Image) -> Image.Image:
     """Logical AND between two images.
 
     Both of the images must have mode "1". If you would like to perform a
@@ -235,7 +241,7 @@ def logical_and(image1, image2):
     return image1._new(image1.im.chop_and(image2.im))
 
 
-def logical_or(image1, image2):
+def logical_or(image1: Image.Image, image2: Image.Image) -> Image.Image:
     """Logical OR between two images.
 
     Both of the images must have mode "1". ::
@@ -250,7 +256,7 @@ def logical_or(image1, image2):
     return image1._new(image1.im.chop_or(image2.im))
 
 
-def logical_xor(image1, image2):
+def logical_xor(image1: Image.Image, image2: Image.Image) -> Image.Image:
     """Logical XOR between two images.
 
     Both of the images must have mode "1". ::
@@ -265,7 +271,7 @@ def logical_xor(image1, image2):
     return image1._new(image1.im.chop_xor(image2.im))
 
 
-def blend(image1, image2, alpha):
+def blend(image1: Image.Image, image2: Image.Image, alpha: float) -> Image.Image:
     """Blend images using constant transparency weight. Alias for
     :py:func:`PIL.Image.blend`.
 
@@ -275,7 +281,9 @@ def blend(image1, image2, alpha):
     return Image.blend(image1, image2, alpha)
 
 
-def composite(image1, image2, mask):
+def composite(
+    image1: Image.Image, image2: Image.Image, mask: Image.Image
+) -> Image.Image:
     """Create composite using transparency mask. Alias for
     :py:func:`PIL.Image.composite`.
 
@@ -285,7 +293,7 @@ def composite(image1, image2, mask):
     return Image.composite(image1, image2, mask)
 
 
-def offset(image, xoffset, yoffset=None):
+def offset(image: Image.Image, xoffset: int, yoffset: int | None = None) -> Image.Image:
     """Returns a copy of the image where data has been offset by the given
     distances. Data wraps around the edges. If ``yoffset`` is omitted, it
     is assumed to be equal to ``xoffset``.
diff --git a/src/PIL/ImageCms.py b/src/PIL/ImageCms.py
index 3a337f9f2..fdfbee789 100644
--- a/src/PIL/ImageCms.py
+++ b/src/PIL/ImageCms.py
@@ -4,6 +4,9 @@
 # Optional color management support, based on Kevin Cazabon's PyCMS
 # library.
 
+# Originally released under LGPL.  Graciously donated to PIL in
+# March 2009, for distribution under the standard PIL license
+
 # History:
 
 # 2009-03-08 fl   Added to PIL.
@@ -14,22 +17,32 @@
 
 # See the README file for information on usage and redistribution.  See
 # below for the original description.
+from __future__ import annotations
 
+import operator
 import sys
-from enum import IntEnum
+from enum import IntEnum, IntFlag
+from functools import reduce
+from typing import Any, Literal, SupportsFloat, SupportsInt, Union
 
-from . import Image
+from . import Image, __version__
+from ._deprecate import deprecate
+from ._typing import SupportsRead
 
 try:
-    from . import _imagingcms
+    from . import _imagingcms as core
+
+    _CmsProfileCompatible = Union[
+        str, SupportsRead[bytes], core.CmsProfile, "ImageCmsProfile"
+    ]
 except ImportError as ex:
     # Allow error import for doc purposes, but error out when accessing
     # anything in core.
     from ._util import DeferredError
 
-    _imagingcms = DeferredError(ex)
+    core = DeferredError.new(ex)
 
-DESCRIPTION = """
+_DESCRIPTION = """
 pyCMS
 
     a Python / PIL interface to the littleCMS ICC Color Management System
@@ -92,11 +105,25 @@ pyCMS
 
 """
 
-VERSION = "1.0.0 pil"
+_VERSION = "1.0.0 pil"
+
+
+def __getattr__(name: str) -> Any:
+    if name == "DESCRIPTION":
+        deprecate("PIL.ImageCms.DESCRIPTION", 12)
+        return _DESCRIPTION
+    elif name == "VERSION":
+        deprecate("PIL.ImageCms.VERSION", 12)
+        return _VERSION
+    elif name == "FLAGS":
+        deprecate("PIL.ImageCms.FLAGS", 12, "PIL.ImageCms.Flags")
+        return _FLAGS
+    msg = f"module '{__name__}' has no attribute '{name}'"
+    raise AttributeError(msg)
+
 
 # --------------------------------------------------------------------.
 
-core = _imagingcms
 
 #
 # intent/direction values
@@ -118,7 +145,70 @@ class Direction(IntEnum):
 #
 # flags
 
-FLAGS = {
+
+class Flags(IntFlag):
+    """Flags and documentation are taken from ``lcms2.h``."""
+
+    NONE = 0
+    NOCACHE = 0x0040
+    """Inhibit 1-pixel cache"""
+    NOOPTIMIZE = 0x0100
+    """Inhibit optimizations"""
+    NULLTRANSFORM = 0x0200
+    """Don't transform anyway"""
+    GAMUTCHECK = 0x1000
+    """Out of Gamut alarm"""
+    SOFTPROOFING = 0x4000
+    """Do softproofing"""
+    BLACKPOINTCOMPENSATION = 0x2000
+    NOWHITEONWHITEFIXUP = 0x0004
+    """Don't fix scum dot"""
+    HIGHRESPRECALC = 0x0400
+    """Use more memory to give better accuracy"""
+    LOWRESPRECALC = 0x0800
+    """Use less memory to minimize resources"""
+    # this should be 8BITS_DEVICELINK, but that is not a valid name in Python:
+    USE_8BITS_DEVICELINK = 0x0008
+    """Create 8 bits devicelinks"""
+    GUESSDEVICECLASS = 0x0020
+    """Guess device class (for ``transform2devicelink``)"""
+    KEEP_SEQUENCE = 0x0080
+    """Keep profile sequence for devicelink creation"""
+    FORCE_CLUT = 0x0002
+    """Force CLUT optimization"""
+    CLUT_POST_LINEARIZATION = 0x0001
+    """create postlinearization tables if possible"""
+    CLUT_PRE_LINEARIZATION = 0x0010
+    """create prelinearization tables if possible"""
+    NONEGATIVES = 0x8000
+    """Prevent negative numbers in floating point transforms"""
+    COPY_ALPHA = 0x04000000
+    """Alpha channels are copied on ``cmsDoTransform()``"""
+    NODEFAULTRESOURCEDEF = 0x01000000
+
+    _GRIDPOINTS_1 = 1 << 16
+    _GRIDPOINTS_2 = 2 << 16
+    _GRIDPOINTS_4 = 4 << 16
+    _GRIDPOINTS_8 = 8 << 16
+    _GRIDPOINTS_16 = 16 << 16
+    _GRIDPOINTS_32 = 32 << 16
+    _GRIDPOINTS_64 = 64 << 16
+    _GRIDPOINTS_128 = 128 << 16
+
+    @staticmethod
+    def GRIDPOINTS(n: int) -> Flags:
+        """
+        Fine-tune control over number of gridpoints
+
+        :param n: :py:class:`int` in range ``0 <= n <= 255``
+        """
+        return Flags.NONE | ((n & 0xFF) << 16)
+
+
+_MAX_FLAG = reduce(operator.or_, Flags)
+
+
+_FLAGS = {
     "MATRIXINPUT": 1,
     "MATRIXOUTPUT": 2,
     "MATRIXONLY": (1 | 2),
@@ -141,11 +231,6 @@ FLAGS = {
     "GRIDPOINTS": lambda n: (n & 0xFF) << 16,  # Gridpoints
 }
 
-_MAX_FLAG = 0
-for flag in FLAGS.values():
-    if isinstance(flag, int):
-        _MAX_FLAG = _MAX_FLAG | flag
-
 
 # --------------------------------------------------------------------.
 # Experimental PIL-level API
@@ -156,7 +241,7 @@ for flag in FLAGS.values():
 
 
 class ImageCmsProfile:
-    def __init__(self, profile):
+    def __init__(self, profile: str | SupportsRead[bytes] | core.CmsProfile) -> None:
         """
         :param profile: Either a string representing a filename,
             a file like object containing a profile or a
@@ -176,19 +261,19 @@ class ImageCmsProfile:
             self._set(core.profile_open(profile), profile)
         elif hasattr(profile, "read"):
             self._set(core.profile_frombytes(profile.read()))
-        elif isinstance(profile, _imagingcms.CmsProfile):
+        elif isinstance(profile, core.CmsProfile):
             self._set(profile)
         else:
-            msg = "Invalid type for Profile"
+            msg = "Invalid type for Profile"  # type: ignore[unreachable]
             raise TypeError(msg)
 
-    def _set(self, profile, filename=None):
+    def _set(self, profile: core.CmsProfile, filename: str | None = None) -> None:
         self.profile = profile
         self.filename = filename
         self.product_name = None  # profile.product_name
         self.product_info = None  # profile.product_info
 
-    def tobytes(self):
+    def tobytes(self) -> bytes:
         """
         Returns the profile in a format suitable for embedding in
         saved images.
@@ -200,7 +285,6 @@ class ImageCmsProfile:
 
 
 class ImageCmsTransform(Image.ImagePointHandler):
-
     """
     Transform.  This can be used with the procedural API, or with the standard
     :py:func:`~PIL.Image.Image.point` method.
@@ -210,15 +294,40 @@ class ImageCmsTransform(Image.ImagePointHandler):
 
     def __init__(
         self,
-        input,
-        output,
-        input_mode,
-        output_mode,
-        intent=Intent.PERCEPTUAL,
-        proof=None,
-        proof_intent=Intent.ABSOLUTE_COLORIMETRIC,
-        flags=0,
+        input: ImageCmsProfile,
+        output: ImageCmsProfile,
+        input_mode: str,
+        output_mode: str,
+        intent: Intent = Intent.PERCEPTUAL,
+        proof: ImageCmsProfile | None = None,
+        proof_intent: Intent = Intent.ABSOLUTE_COLORIMETRIC,
+        flags: Flags = Flags.NONE,
     ):
+        supported_modes = (
+            "RGB",
+            "RGBA",
+            "RGBX",
+            "CMYK",
+            "I;16",
+            "I;16L",
+            "I;16B",
+            "YCbCr",
+            "LAB",
+            "L",
+            "1",
+        )
+        for mode in (input_mode, output_mode):
+            if mode not in supported_modes:
+                deprecate(
+                    mode,
+                    12,
+                    {
+                        "L;16": "I;16 or I;16L",
+                        "L:16B": "I;16B",
+                        "YCCA": "YCbCr",
+                        "YCC": "YCbCr",
+                    }.get(mode),
+                )
         if proof is None:
             self.transform = core.buildTransform(
                 input.profile, output.profile, input_mode, output_mode, intent, flags
@@ -240,28 +349,26 @@ class ImageCmsTransform(Image.ImagePointHandler):
 
         self.output_profile = output
 
-    def point(self, im):
+    def point(self, im: Image.Image) -> Image.Image:
         return self.apply(im)
 
-    def apply(self, im, imOut=None):
-        im.load()
+    def apply(self, im: Image.Image, imOut: Image.Image | None = None) -> Image.Image:
         if imOut is None:
             imOut = Image.new(self.output_mode, im.size, None)
-        self.transform.apply(im.im.id, imOut.im.id)
+        self.transform.apply(im.getim(), imOut.getim())
         imOut.info["icc_profile"] = self.output_profile.tobytes()
         return imOut
 
-    def apply_in_place(self, im):
-        im.load()
+    def apply_in_place(self, im: Image.Image) -> Image.Image:
         if im.mode != self.output_mode:
             msg = "mode mismatch"
             raise ValueError(msg)  # wrong output mode
-        self.transform.apply(im.im.id, im.im.id)
+        self.transform.apply(im.getim(), im.getim())
         im.info["icc_profile"] = self.output_profile.tobytes()
         return im
 
 
-def get_display_profile(handle=None):
+def get_display_profile(handle: SupportsInt | None = None) -> ImageCmsProfile | None:
     """
     (experimental) Fetches the profile for the current display device.
 
@@ -271,12 +378,12 @@ def get_display_profile(handle=None):
     if sys.platform != "win32":
         return None
 
-    from . import ImageWin
+    from . import ImageWin  # type: ignore[unused-ignore, unreachable]
 
     if isinstance(handle, ImageWin.HDC):
-        profile = core.get_display_profile_win32(handle, 1)
+        profile = core.get_display_profile_win32(int(handle), 1)
     else:
-        profile = core.get_display_profile_win32(handle or 0)
+        profile = core.get_display_profile_win32(int(handle or 0))
     if profile is None:
         return None
     return ImageCmsProfile(profile)
@@ -288,7 +395,6 @@ def get_display_profile(handle=None):
 
 
 class PyCMSError(Exception):
-
     """(pyCMS) Exception class.
     This is used for all errors in the pyCMS API."""
 
@@ -296,14 +402,14 @@ class PyCMSError(Exception):
 
 
 def profileToProfile(
-    im,
-    inputProfile,
-    outputProfile,
-    renderingIntent=Intent.PERCEPTUAL,
-    outputMode=None,
-    inPlace=False,
-    flags=0,
-):
+    im: Image.Image,
+    inputProfile: _CmsProfileCompatible,
+    outputProfile: _CmsProfileCompatible,
+    renderingIntent: Intent = Intent.PERCEPTUAL,
+    outputMode: str | None = None,
+    inPlace: bool = False,
+    flags: Flags = Flags.NONE,
+) -> Image.Image | None:
     """
     (pyCMS) Applies an ICC transformation to a given image, mapping from
     ``inputProfile`` to ``outputProfile``.
@@ -391,7 +497,9 @@ def profileToProfile(
     return imOut
 
 
-def getOpenProfile(profileFilename):
+def getOpenProfile(
+    profileFilename: str | SupportsRead[bytes] | core.CmsProfile,
+) -> ImageCmsProfile:
     """
     (pyCMS) Opens an ICC profile file.
 
@@ -414,13 +522,13 @@ def getOpenProfile(profileFilename):
 
 
 def buildTransform(
-    inputProfile,
-    outputProfile,
-    inMode,
-    outMode,
-    renderingIntent=Intent.PERCEPTUAL,
-    flags=0,
-):
+    inputProfile: _CmsProfileCompatible,
+    outputProfile: _CmsProfileCompatible,
+    inMode: str,
+    outMode: str,
+    renderingIntent: Intent = Intent.PERCEPTUAL,
+    flags: Flags = Flags.NONE,
+) -> ImageCmsTransform:
     """
     (pyCMS) Builds an ICC transform mapping from the ``inputProfile`` to the
     ``outputProfile``. Use applyTransform to apply the transform to a given
@@ -481,7 +589,7 @@ def buildTransform(
         raise PyCMSError(msg)
 
     if not isinstance(flags, int) or not (0 <= flags <= _MAX_FLAG):
-        msg = "flags must be an integer between 0 and %s" + _MAX_FLAG
+        msg = f"flags must be an integer between 0 and {_MAX_FLAG}"
         raise PyCMSError(msg)
 
     try:
@@ -497,15 +605,15 @@ def buildTransform(
 
 
 def buildProofTransform(
-    inputProfile,
-    outputProfile,
-    proofProfile,
-    inMode,
-    outMode,
-    renderingIntent=Intent.PERCEPTUAL,
-    proofRenderingIntent=Intent.ABSOLUTE_COLORIMETRIC,
-    flags=FLAGS["SOFTPROOFING"],
-):
+    inputProfile: _CmsProfileCompatible,
+    outputProfile: _CmsProfileCompatible,
+    proofProfile: _CmsProfileCompatible,
+    inMode: str,
+    outMode: str,
+    renderingIntent: Intent = Intent.PERCEPTUAL,
+    proofRenderingIntent: Intent = Intent.ABSOLUTE_COLORIMETRIC,
+    flags: Flags = Flags.SOFTPROOFING,
+) -> ImageCmsTransform:
     """
     (pyCMS) Builds an ICC transform mapping from the ``inputProfile`` to the
     ``outputProfile``, but tries to simulate the result that would be
@@ -585,7 +693,7 @@ def buildProofTransform(
         raise PyCMSError(msg)
 
     if not isinstance(flags, int) or not (0 <= flags <= _MAX_FLAG):
-        msg = "flags must be an integer between 0 and %s" + _MAX_FLAG
+        msg = f"flags must be an integer between 0 and {_MAX_FLAG}"
         raise PyCMSError(msg)
 
     try:
@@ -613,16 +721,18 @@ buildTransformFromOpenProfiles = buildTransform
 buildProofTransformFromOpenProfiles = buildProofTransform
 
 
-def applyTransform(im, transform, inPlace=False):
+def applyTransform(
+    im: Image.Image, transform: ImageCmsTransform, inPlace: bool = False
+) -> Image.Image | None:
     """
     (pyCMS) Applies a transform to a given image.
 
-    If ``im.mode != transform.inMode``, a :exc:`PyCMSError` is raised.
+    If ``im.mode != transform.input_mode``, a :exc:`PyCMSError` is raised.
 
-    If ``inPlace`` is ``True`` and ``transform.inMode != transform.outMode``, a
+    If ``inPlace`` is ``True`` and ``transform.input_mode != transform.output_mode``, a
     :exc:`PyCMSError` is raised.
 
-    If ``im.mode``, ``transform.inMode`` or ``transform.outMode`` is not
+    If ``im.mode``, ``transform.input_mode`` or ``transform.output_mode`` is not
     supported by pyCMSdll or the profiles you used for the transform, a
     :exc:`PyCMSError` is raised.
 
@@ -636,13 +746,13 @@ def applyTransform(im, transform, inPlace=False):
 
     If you want to modify im in-place instead of receiving a new image as
     the return value, set ``inPlace`` to ``True``.  This can only be done if
-    ``transform.inMode`` and ``transform.outMode`` are the same, because we can't
-    change the mode in-place (the buffer sizes for some modes are
+    ``transform.input_mode`` and ``transform.output_mode`` are the same, because we
+    can't change the mode in-place (the buffer sizes for some modes are
     different).  The default behavior is to return a new :py:class:`~PIL.Image.Image`
-    object of the same dimensions in mode ``transform.outMode``.
+    object of the same dimensions in mode ``transform.output_mode``.
 
-    :param im: An :py:class:`~PIL.Image.Image` object, and im.mode must be the same
-        as the ``inMode`` supported by the transform.
+    :param im: An :py:class:`~PIL.Image.Image` object, and ``im.mode`` must be the same
+        as the ``input_mode`` supported by the transform.
     :param transform: A valid CmsTransform class object
     :param inPlace: Bool.  If ``True``, ``im`` is modified in place and ``None`` is
         returned, if ``False``, a new :py:class:`~PIL.Image.Image` object with the
@@ -666,7 +776,9 @@ def applyTransform(im, transform, inPlace=False):
     return imOut
 
 
-def createProfile(colorSpace, colorTemp=-1):
+def createProfile(
+    colorSpace: Literal["LAB", "XYZ", "sRGB"], colorTemp: SupportsFloat = 0
+) -> core.CmsProfile:
     """
     (pyCMS) Creates a profile.
 
@@ -688,7 +800,7 @@ def createProfile(colorSpace, colorTemp=-1):
     :param colorSpace: String, the color space of the profile you wish to
         create.
         Currently only "LAB", "XYZ", and "sRGB" are supported.
-    :param colorTemp: Positive integer for the white point for the profile, in
+    :param colorTemp: Positive number for the white point for the profile, in
         degrees Kelvin (i.e. 5000, 6500, 9600, etc.).  The default is for D50
         illuminant if omitted (5000k).  colorTemp is ONLY applied to LAB
         profiles, and is ignored for XYZ and sRGB.
@@ -715,7 +827,7 @@ def createProfile(colorSpace, colorTemp=-1):
         raise PyCMSError(v) from v
 
 
-def getProfileName(profile):
+def getProfileName(profile: _CmsProfileCompatible) -> str:
     """
 
     (pyCMS) Gets the internal product name for the given profile.
@@ -749,15 +861,15 @@ def getProfileName(profile):
 
         if not (model or manufacturer):
             return (profile.profile.profile_description or "") + "\n"
-        if not manufacturer or len(model) > 30:
-            return model + "\n"
+        if not manufacturer or (model and len(model) > 30):
+            return f"{model}\n"
         return f"{model} - {manufacturer}\n"
 
     except (AttributeError, OSError, TypeError, ValueError) as v:
         raise PyCMSError(v) from v
 
 
-def getProfileInfo(profile):
+def getProfileInfo(profile: _CmsProfileCompatible) -> str:
     """
     (pyCMS) Gets the internal product information for the given profile.
 
@@ -787,17 +899,14 @@ def getProfileInfo(profile):
         # info was description \r\n\r\n copyright \r\n\r\n K007 tag \r\n\r\n whitepoint
         description = profile.profile.profile_description
         cpright = profile.profile.copyright
-        arr = []
-        for elt in (description, cpright):
-            if elt:
-                arr.append(elt)
-        return "\r\n\r\n".join(arr) + "\r\n\r\n"
+        elements = [element for element in (description, cpright) if element]
+        return "\r\n\r\n".join(elements) + "\r\n\r\n"
 
     except (AttributeError, OSError, TypeError, ValueError) as v:
         raise PyCMSError(v) from v
 
 
-def getProfileCopyright(profile):
+def getProfileCopyright(profile: _CmsProfileCompatible) -> str:
     """
     (pyCMS) Gets the copyright for the given profile.
 
@@ -825,7 +934,7 @@ def getProfileCopyright(profile):
         raise PyCMSError(v) from v
 
 
-def getProfileManufacturer(profile):
+def getProfileManufacturer(profile: _CmsProfileCompatible) -> str:
     """
     (pyCMS) Gets the manufacturer for the given profile.
 
@@ -853,7 +962,7 @@ def getProfileManufacturer(profile):
         raise PyCMSError(v) from v
 
 
-def getProfileModel(profile):
+def getProfileModel(profile: _CmsProfileCompatible) -> str:
     """
     (pyCMS) Gets the model for the given profile.
 
@@ -882,7 +991,7 @@ def getProfileModel(profile):
         raise PyCMSError(v) from v
 
 
-def getProfileDescription(profile):
+def getProfileDescription(profile: _CmsProfileCompatible) -> str:
     """
     (pyCMS) Gets the description for the given profile.
 
@@ -911,7 +1020,7 @@ def getProfileDescription(profile):
         raise PyCMSError(v) from v
 
 
-def getDefaultIntent(profile):
+def getDefaultIntent(profile: _CmsProfileCompatible) -> int:
     """
     (pyCMS) Gets the default intent name for the given profile.
 
@@ -950,7 +1059,9 @@ def getDefaultIntent(profile):
         raise PyCMSError(v) from v
 
 
-def isIntentSupported(profile, intent, direction):
+def isIntentSupported(
+    profile: _CmsProfileCompatible, intent: Intent, direction: Direction
+) -> Literal[-1, 1]:
     """
     (pyCMS) Checks if a given intent is supported.
 
@@ -1001,9 +1112,14 @@ def isIntentSupported(profile, intent, direction):
         raise PyCMSError(v) from v
 
 
-def versions():
+def versions() -> tuple[str, str | None, str, str]:
     """
     (pyCMS) Fetches versions.
     """
 
-    return VERSION, core.littlecms_version, sys.version.split()[0], Image.__version__
+    deprecate(
+        "PIL.ImageCms.versions()",
+        12,
+        '(PIL.features.version("littlecms2"), sys.version, PIL.__version__)',
+    )
+    return _VERSION, core.littlecms_version, sys.version.split()[0], __version__
diff --git a/src/PIL/ImageColor.py b/src/PIL/ImageColor.py
index e184ed68d..9a15a8eb7 100644
--- a/src/PIL/ImageColor.py
+++ b/src/PIL/ImageColor.py
@@ -16,13 +16,16 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import re
+from functools import lru_cache
 
 from . import Image
 
 
-def getrgb(color):
+@lru_cache
+def getrgb(color: str) -> tuple[int, int, int] | tuple[int, int, int, int]:
     """
      Convert a color string to an RGB or RGBA tuple. If the string cannot be
      parsed, this function raises a :py:exc:`ValueError` exception.
@@ -41,8 +44,10 @@ def getrgb(color):
     if rgb:
         if isinstance(rgb, tuple):
             return rgb
-        colormap[color] = rgb = getrgb(rgb)
-        return rgb
+        rgb_tuple = getrgb(rgb)
+        assert len(rgb_tuple) == 3
+        colormap[color] = rgb_tuple
+        return rgb_tuple
 
     # check for known string formats
     if re.match("#[a-f0-9]{3}$", color):
@@ -85,15 +90,15 @@ def getrgb(color):
     if m:
         from colorsys import hls_to_rgb
 
-        rgb = hls_to_rgb(
+        rgb_floats = hls_to_rgb(
             float(m.group(1)) / 360.0,
             float(m.group(3)) / 100.0,
             float(m.group(2)) / 100.0,
         )
         return (
-            int(rgb[0] * 255 + 0.5),
-            int(rgb[1] * 255 + 0.5),
-            int(rgb[2] * 255 + 0.5),
+            int(rgb_floats[0] * 255 + 0.5),
+            int(rgb_floats[1] * 255 + 0.5),
+            int(rgb_floats[2] * 255 + 0.5),
         )
 
     m = re.match(
@@ -102,15 +107,15 @@ def getrgb(color):
     if m:
         from colorsys import hsv_to_rgb
 
-        rgb = hsv_to_rgb(
+        rgb_floats = hsv_to_rgb(
             float(m.group(1)) / 360.0,
             float(m.group(2)) / 100.0,
             float(m.group(3)) / 100.0,
         )
         return (
-            int(rgb[0] * 255 + 0.5),
-            int(rgb[1] * 255 + 0.5),
-            int(rgb[2] * 255 + 0.5),
+            int(rgb_floats[0] * 255 + 0.5),
+            int(rgb_floats[1] * 255 + 0.5),
+            int(rgb_floats[2] * 255 + 0.5),
         )
 
     m = re.match(r"rgba\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)$", color)
@@ -120,37 +125,47 @@ def getrgb(color):
     raise ValueError(msg)
 
 
-def getcolor(color, mode):
+@lru_cache
+def getcolor(color: str, mode: str) -> int | tuple[int, ...]:
     """
-    Same as :py:func:`~PIL.ImageColor.getrgb`, but converts the RGB value to a
-    greyscale value if ``mode`` is not color or a palette image. If the string
-    cannot be parsed, this function raises a :py:exc:`ValueError` exception.
+    Same as :py:func:`~PIL.ImageColor.getrgb` for most modes. However, if
+    ``mode`` is HSV, converts the RGB value to a HSV value, or if ``mode`` is
+    not color or a palette image, converts the RGB value to a grayscale value.
+    If the string cannot be parsed, this function raises a :py:exc:`ValueError`
+    exception.
 
     .. versionadded:: 1.1.4
 
     :param color: A color string
     :param mode: Convert result to this mode
-    :return: ``(graylevel[, alpha]) or (red, green, blue[, alpha])``
+    :return: ``graylevel, (graylevel, alpha) or (red, green, blue[, alpha])``
     """
     # same as getrgb, but converts the result to the given mode
-    color, alpha = getrgb(color), 255
-    if len(color) == 4:
-        color, alpha = color[:3], color[3]
+    rgb, alpha = getrgb(color), 255
+    if len(rgb) == 4:
+        alpha = rgb[3]
+        rgb = rgb[:3]
 
-    if Image.getmodebase(mode) == "L":
-        r, g, b = color
+    if mode == "HSV":
+        from colorsys import rgb_to_hsv
+
+        r, g, b = rgb
+        h, s, v = rgb_to_hsv(r / 255, g / 255, b / 255)
+        return int(h * 255), int(s * 255), int(v * 255)
+    elif Image.getmodebase(mode) == "L":
+        r, g, b = rgb
         # ITU-R Recommendation 601-2 for nonlinear RGB
         # scaled to 24 bits to match the convert's implementation.
-        color = (r * 19595 + g * 38470 + b * 7471 + 0x8000) >> 16
+        graylevel = (r * 19595 + g * 38470 + b * 7471 + 0x8000) >> 16
         if mode[-1] == "A":
-            return color, alpha
-    else:
-        if mode[-1] == "A":
-            return color + (alpha,)
-    return color
+            return graylevel, alpha
+        return graylevel
+    elif mode[-1] == "A":
+        return rgb + (alpha,)
+    return rgb
 
 
-colormap = {
+colormap: dict[str, str | tuple[int, int, int]] = {
     # X11 colour table from https://drafts.csswg.org/css-color-4/, with
     # gray/grey spelling issues fixed.  This is a superset of HTML 4.0
     # colour names used in CSS 1.
diff --git a/src/PIL/ImageDraw.py b/src/PIL/ImageDraw.py
index 7d1790faa..d8e4c0c60 100644
--- a/src/PIL/ImageDraw.py
+++ b/src/PIL/ImageDraw.py
@@ -29,11 +29,29 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import math
-import numbers
+import struct
+from collections.abc import Sequence
+from types import ModuleType
+from typing import TYPE_CHECKING, Any, AnyStr, Callable, Union, cast
 
 from . import Image, ImageColor
+from ._deprecate import deprecate
+from ._typing import Coords
+
+# experimental access to the outline API
+Outline: Callable[[], Image.core._Outline] | None
+try:
+    Outline = Image.core.outline
+except AttributeError:
+    Outline = None
+
+if TYPE_CHECKING:
+    from . import ImageDraw2, ImageFont
+
+_Ink = Union[float, tuple[int, ...], str]
 
 """
 A simple 2D drawing interface for PIL images.
@@ -44,9 +62,11 @@ directly.
 
 
 class ImageDraw:
-    font = None
+    font: (
+        ImageFont.ImageFont | ImageFont.FreeTypeFont | ImageFont.TransposedFont | None
+    ) = None
 
-    def __init__(self, im, mode=None):
+    def __init__(self, im: Image.Image, mode: str | None = None) -> None:
         """
         Create a drawing instance.
 
@@ -88,7 +108,9 @@ class ImageDraw:
             self.fontmode = "L"  # aliasing is okay for other modes
         self.fill = False
 
-    def getfont(self):
+    def getfont(
+        self,
+    ) -> ImageFont.ImageFont | ImageFont.FreeTypeFont | ImageFont.TransposedFont:
         """
         Get the current default font.
 
@@ -113,34 +135,57 @@ class ImageDraw:
             self.font = ImageFont.load_default()
         return self.font
 
-    def _getink(self, ink, fill=None):
+    def _getfont(
+        self, font_size: float | None
+    ) -> ImageFont.ImageFont | ImageFont.FreeTypeFont | ImageFont.TransposedFont:
+        if font_size is not None:
+            from . import ImageFont
+
+            return ImageFont.load_default(font_size)
+        else:
+            return self.getfont()
+
+    def _getink(
+        self, ink: _Ink | None, fill: _Ink | None = None
+    ) -> tuple[int | None, int | None]:
+        result_ink = None
+        result_fill = None
         if ink is None and fill is None:
             if self.fill:
-                fill = self.ink
+                result_fill = self.ink
             else:
-                ink = self.ink
+                result_ink = self.ink
         else:
             if ink is not None:
                 if isinstance(ink, str):
                     ink = ImageColor.getcolor(ink, self.mode)
-                if self.palette and not isinstance(ink, numbers.Number):
+                if self.palette and isinstance(ink, tuple):
                     ink = self.palette.getcolor(ink, self._image)
-                ink = self.draw.draw_ink(ink)
+                result_ink = self.draw.draw_ink(ink)
             if fill is not None:
                 if isinstance(fill, str):
                     fill = ImageColor.getcolor(fill, self.mode)
-                if self.palette and not isinstance(fill, numbers.Number):
+                if self.palette and isinstance(fill, tuple):
                     fill = self.palette.getcolor(fill, self._image)
-                fill = self.draw.draw_ink(fill)
-        return ink, fill
+                result_fill = self.draw.draw_ink(fill)
+        return result_ink, result_fill
 
-    def arc(self, xy, start, end, fill=None, width=1):
+    def arc(
+        self,
+        xy: Coords,
+        start: float,
+        end: float,
+        fill: _Ink | None = None,
+        width: int = 1,
+    ) -> None:
         """Draw an arc."""
         ink, fill = self._getink(fill)
         if ink is not None:
             self.draw.draw_arc(xy, start, end, ink, width)
 
-    def bitmap(self, xy, bitmap, fill=None):
+    def bitmap(
+        self, xy: Sequence[int], bitmap: Image.Image, fill: _Ink | None = None
+    ) -> None:
         """Draw a bitmap."""
         bitmap.load()
         ink, fill = self._getink(fill)
@@ -149,42 +194,85 @@ class ImageDraw:
         if ink is not None:
             self.draw.draw_bitmap(xy, bitmap.im, ink)
 
-    def chord(self, xy, start, end, fill=None, outline=None, width=1):
+    def chord(
+        self,
+        xy: Coords,
+        start: float,
+        end: float,
+        fill: _Ink | None = None,
+        outline: _Ink | None = None,
+        width: int = 1,
+    ) -> None:
         """Draw a chord."""
-        ink, fill = self._getink(outline, fill)
-        if fill is not None:
-            self.draw.draw_chord(xy, start, end, fill, 1)
-        if ink is not None and ink != fill and width != 0:
+        ink, fill_ink = self._getink(outline, fill)
+        if fill_ink is not None:
+            self.draw.draw_chord(xy, start, end, fill_ink, 1)
+        if ink is not None and ink != fill_ink and width != 0:
             self.draw.draw_chord(xy, start, end, ink, 0, width)
 
-    def ellipse(self, xy, fill=None, outline=None, width=1):
+    def ellipse(
+        self,
+        xy: Coords,
+        fill: _Ink | None = None,
+        outline: _Ink | None = None,
+        width: int = 1,
+    ) -> None:
         """Draw an ellipse."""
-        ink, fill = self._getink(outline, fill)
-        if fill is not None:
-            self.draw.draw_ellipse(xy, fill, 1)
-        if ink is not None and ink != fill and width != 0:
+        ink, fill_ink = self._getink(outline, fill)
+        if fill_ink is not None:
+            self.draw.draw_ellipse(xy, fill_ink, 1)
+        if ink is not None and ink != fill_ink and width != 0:
             self.draw.draw_ellipse(xy, ink, 0, width)
 
-    def line(self, xy, fill=None, width=0, joint=None):
+    def circle(
+        self,
+        xy: Sequence[float],
+        radius: float,
+        fill: _Ink | None = None,
+        outline: _Ink | None = None,
+        width: int = 1,
+    ) -> None:
+        """Draw a circle given center coordinates and a radius."""
+        ellipse_xy = (xy[0] - radius, xy[1] - radius, xy[0] + radius, xy[1] + radius)
+        self.ellipse(ellipse_xy, fill, outline, width)
+
+    def line(
+        self,
+        xy: Coords,
+        fill: _Ink | None = None,
+        width: int = 0,
+        joint: str | None = None,
+    ) -> None:
         """Draw a line, or a connected sequence of line segments."""
         ink = self._getink(fill)[0]
         if ink is not None:
             self.draw.draw_lines(xy, ink, width)
             if joint == "curve" and width > 4:
-                if not isinstance(xy[0], (list, tuple)):
-                    xy = [tuple(xy[i : i + 2]) for i in range(0, len(xy), 2)]
-                for i in range(1, len(xy) - 1):
-                    point = xy[i]
+                points: Sequence[Sequence[float]]
+                if isinstance(xy[0], (list, tuple)):
+                    points = cast(Sequence[Sequence[float]], xy)
+                else:
+                    points = [
+                        cast(Sequence[float], tuple(xy[i : i + 2]))
+                        for i in range(0, len(xy), 2)
+                    ]
+                for i in range(1, len(points) - 1):
+                    point = points[i]
                     angles = [
                         math.degrees(math.atan2(end[0] - start[0], start[1] - end[1]))
                         % 360
-                        for start, end in ((xy[i - 1], point), (point, xy[i + 1]))
+                        for start, end in (
+                            (points[i - 1], point),
+                            (point, points[i + 1]),
+                        )
                     ]
                     if angles[0] == angles[1]:
                         # This is a straight line, so no joint is required
                         continue
 
-                    def coord_at_angle(coord, angle):
+                    def coord_at_angle(
+                        coord: Sequence[float], angle: float
+                    ) -> tuple[float, ...]:
                         x, y = coord
                         angle -= 90
                         distance = width / 2 - 1
@@ -225,38 +313,57 @@ class ImageDraw:
                             ]
                         self.line(gap_coords, fill, width=3)
 
-    def shape(self, shape, fill=None, outline=None):
+    def shape(
+        self,
+        shape: Image.core._Outline,
+        fill: _Ink | None = None,
+        outline: _Ink | None = None,
+    ) -> None:
         """(Experimental) Draw a shape."""
         shape.close()
-        ink, fill = self._getink(outline, fill)
-        if fill is not None:
-            self.draw.draw_outline(shape, fill, 1)
-        if ink is not None and ink != fill:
+        ink, fill_ink = self._getink(outline, fill)
+        if fill_ink is not None:
+            self.draw.draw_outline(shape, fill_ink, 1)
+        if ink is not None and ink != fill_ink:
             self.draw.draw_outline(shape, ink, 0)
 
-    def pieslice(self, xy, start, end, fill=None, outline=None, width=1):
+    def pieslice(
+        self,
+        xy: Coords,
+        start: float,
+        end: float,
+        fill: _Ink | None = None,
+        outline: _Ink | None = None,
+        width: int = 1,
+    ) -> None:
         """Draw a pieslice."""
-        ink, fill = self._getink(outline, fill)
-        if fill is not None:
-            self.draw.draw_pieslice(xy, start, end, fill, 1)
-        if ink is not None and ink != fill and width != 0:
+        ink, fill_ink = self._getink(outline, fill)
+        if fill_ink is not None:
+            self.draw.draw_pieslice(xy, start, end, fill_ink, 1)
+        if ink is not None and ink != fill_ink and width != 0:
             self.draw.draw_pieslice(xy, start, end, ink, 0, width)
 
-    def point(self, xy, fill=None):
+    def point(self, xy: Coords, fill: _Ink | None = None) -> None:
         """Draw one or more individual pixels."""
         ink, fill = self._getink(fill)
         if ink is not None:
             self.draw.draw_points(xy, ink)
 
-    def polygon(self, xy, fill=None, outline=None, width=1):
+    def polygon(
+        self,
+        xy: Coords,
+        fill: _Ink | None = None,
+        outline: _Ink | None = None,
+        width: int = 1,
+    ) -> None:
         """Draw a polygon."""
-        ink, fill = self._getink(outline, fill)
-        if fill is not None:
-            self.draw.draw_polygon(xy, fill, 1)
-        if ink is not None and ink != fill and width != 0:
+        ink, fill_ink = self._getink(outline, fill)
+        if fill_ink is not None:
+            self.draw.draw_polygon(xy, fill_ink, 1)
+        if ink is not None and ink != fill_ink and width != 0:
             if width == 1:
                 self.draw.draw_polygon(xy, ink, 0, width)
-            else:
+            elif self.im is not None:
                 # To avoid expanding the polygon outwards,
                 # use the fill as a mask
                 mask = Image.new("1", self.im.size)
@@ -279,28 +386,47 @@ class ImageDraw:
                 self.im.paste(im.im, (0, 0) + im.size, mask.im)
 
     def regular_polygon(
-        self, bounding_circle, n_sides, rotation=0, fill=None, outline=None, width=1
-    ):
+        self,
+        bounding_circle: Sequence[Sequence[float] | float],
+        n_sides: int,
+        rotation: float = 0,
+        fill: _Ink | None = None,
+        outline: _Ink | None = None,
+        width: int = 1,
+    ) -> None:
         """Draw a regular polygon."""
         xy = _compute_regular_polygon_vertices(bounding_circle, n_sides, rotation)
         self.polygon(xy, fill, outline, width)
 
-    def rectangle(self, xy, fill=None, outline=None, width=1):
+    def rectangle(
+        self,
+        xy: Coords,
+        fill: _Ink | None = None,
+        outline: _Ink | None = None,
+        width: int = 1,
+    ) -> None:
         """Draw a rectangle."""
-        ink, fill = self._getink(outline, fill)
-        if fill is not None:
-            self.draw.draw_rectangle(xy, fill, 1)
-        if ink is not None and ink != fill and width != 0:
+        ink, fill_ink = self._getink(outline, fill)
+        if fill_ink is not None:
+            self.draw.draw_rectangle(xy, fill_ink, 1)
+        if ink is not None and ink != fill_ink and width != 0:
             self.draw.draw_rectangle(xy, ink, 0, width)
 
     def rounded_rectangle(
-        self, xy, radius=0, fill=None, outline=None, width=1, *, corners=None
-    ):
+        self,
+        xy: Coords,
+        radius: float = 0,
+        fill: _Ink | None = None,
+        outline: _Ink | None = None,
+        width: int = 1,
+        *,
+        corners: tuple[bool, bool, bool, bool] | None = None,
+    ) -> None:
         """Draw a rounded rectangle."""
         if isinstance(xy[0], (list, tuple)):
-            (x0, y0), (x1, y1) = xy
+            (x0, y0), (x1, y1) = cast(Sequence[Sequence[float]], xy)
         else:
-            x0, y0, x1, y1 = xy
+            x0, y0, x1, y1 = cast(Sequence[float], xy)
         if x1 < x0:
             msg = "x1 must be greater than or equal to x0"
             raise ValueError(msg)
@@ -312,6 +438,10 @@ class ImageDraw:
 
         d = radius * 2
 
+        x0 = round(x0)
+        y0 = round(y0)
+        x1 = round(x1)
+        y1 = round(y1)
         full_x, full_y = False, False
         if all(corners):
             full_x = d >= x1 - x0 - 1
@@ -332,10 +462,11 @@ class ImageDraw:
             # that is a rectangle
             return self.rectangle(xy, fill, outline, width)
 
-        r = d // 2
-        ink, fill = self._getink(outline, fill)
+        r = int(d // 2)
+        ink, fill_ink = self._getink(outline, fill)
 
-        def draw_corners(pieslice):
+        def draw_corners(pieslice: bool) -> None:
+            parts: tuple[tuple[tuple[float, float, float, float], int, int], ...]
             if full_x:
                 # Draw top and bottom halves
                 parts = (
@@ -350,45 +481,46 @@ class ImageDraw:
                 )
             else:
                 # Draw four separate corners
-                parts = []
-                for i, part in enumerate(
-                    (
-                        ((x0, y0, x0 + d, y0 + d), 180, 270),
-                        ((x1 - d, y0, x1, y0 + d), 270, 360),
-                        ((x1 - d, y1 - d, x1, y1), 0, 90),
-                        ((x0, y1 - d, x0 + d, y1), 90, 180),
+                parts = tuple(
+                    part
+                    for i, part in enumerate(
+                        (
+                            ((x0, y0, x0 + d, y0 + d), 180, 270),
+                            ((x1 - d, y0, x1, y0 + d), 270, 360),
+                            ((x1 - d, y1 - d, x1, y1), 0, 90),
+                            ((x0, y1 - d, x0 + d, y1), 90, 180),
+                        )
                     )
-                ):
-                    if corners[i]:
-                        parts.append(part)
+                    if corners[i]
+                )
             for part in parts:
                 if pieslice:
-                    self.draw.draw_pieslice(*(part + (fill, 1)))
+                    self.draw.draw_pieslice(*(part + (fill_ink, 1)))
                 else:
                     self.draw.draw_arc(*(part + (ink, width)))
 
-        if fill is not None:
+        if fill_ink is not None:
             draw_corners(True)
 
             if full_x:
-                self.draw.draw_rectangle((x0, y0 + r + 1, x1, y1 - r - 1), fill, 1)
-            else:
-                self.draw.draw_rectangle((x0 + r + 1, y0, x1 - r - 1, y1), fill, 1)
+                self.draw.draw_rectangle((x0, y0 + r + 1, x1, y1 - r - 1), fill_ink, 1)
+            elif x1 - r - 1 > x0 + r + 1:
+                self.draw.draw_rectangle((x0 + r + 1, y0, x1 - r - 1, y1), fill_ink, 1)
             if not full_x and not full_y:
                 left = [x0, y0, x0 + r, y1]
                 if corners[0]:
                     left[1] += r + 1
                 if corners[3]:
                     left[3] -= r + 1
-                self.draw.draw_rectangle(left, fill, 1)
+                self.draw.draw_rectangle(left, fill_ink, 1)
 
                 right = [x1 - r, y0, x1, y1]
                 if corners[1]:
                     right[1] += r + 1
                 if corners[2]:
                     right[3] -= r + 1
-                self.draw.draw_rectangle(right, fill, 1)
-        if ink is not None and ink != fill and width != 0:
+                self.draw.draw_rectangle(right, fill_ink, 1)
+        if ink is not None and ink != fill_ink and width != 0:
             draw_corners(False)
 
             if not full_x:
@@ -420,17 +552,20 @@ class ImageDraw:
                     right[3] -= r + 1
                 self.draw.draw_rectangle(right, ink, 1)
 
-    def _multiline_check(self, text):
+    def _multiline_check(self, text: AnyStr) -> bool:
         split_character = "\n" if isinstance(text, str) else b"\n"
 
         return split_character in text
 
-    def _multiline_split(self, text):
-        split_character = "\n" if isinstance(text, str) else b"\n"
+    def _multiline_split(self, text: AnyStr) -> list[AnyStr]:
+        return text.split("\n" if isinstance(text, str) else b"\n")
 
-        return text.split(split_character)
-
-    def _multiline_spacing(self, font, spacing, stroke_width):
+    def _multiline_spacing(
+        self,
+        font: ImageFont.ImageFont | ImageFont.FreeTypeFont | ImageFont.TransposedFont,
+        spacing: float,
+        stroke_width: float,
+    ) -> float:
         return (
             self.textbbox((0, 0), "A", font, stroke_width=stroke_width)[3]
             + stroke_width
@@ -439,23 +574,35 @@ class ImageDraw:
 
     def text(
         self,
-        xy,
-        text,
-        fill=None,
-        font=None,
-        anchor=None,
-        spacing=4,
-        align="left",
-        direction=None,
-        features=None,
-        language=None,
-        stroke_width=0,
-        stroke_fill=None,
-        embedded_color=False,
-        *args,
-        **kwargs,
-    ):
+        xy: tuple[float, float],
+        text: AnyStr,
+        fill: _Ink | None = None,
+        font: (
+            ImageFont.ImageFont
+            | ImageFont.FreeTypeFont
+            | ImageFont.TransposedFont
+            | None
+        ) = None,
+        anchor: str | None = None,
+        spacing: float = 4,
+        align: str = "left",
+        direction: str | None = None,
+        features: list[str] | None = None,
+        language: str | None = None,
+        stroke_width: float = 0,
+        stroke_fill: _Ink | None = None,
+        embedded_color: bool = False,
+        *args: Any,
+        **kwargs: Any,
+    ) -> None:
         """Draw text."""
+        if embedded_color and self.mode not in ("RGB", "RGBA"):
+            msg = "Embedded color supported only in RGB and RGBA modes"
+            raise ValueError(msg)
+
+        if font is None:
+            font = self._getfont(kwargs.get("font_size"))
+
         if self._multiline_check(text):
             return self.multiline_text(
                 xy,
@@ -473,30 +620,23 @@ class ImageDraw:
                 embedded_color,
             )
 
-        if embedded_color and self.mode not in ("RGB", "RGBA"):
-            msg = "Embedded color supported only in RGB and RGBA modes"
-            raise ValueError(msg)
-
-        if font is None:
-            font = self.getfont()
-
-        def getink(fill):
-            ink, fill = self._getink(fill)
+        def getink(fill: _Ink | None) -> int:
+            ink, fill_ink = self._getink(fill)
             if ink is None:
-                return fill
+                assert fill_ink is not None
+                return fill_ink
             return ink
 
-        def draw_text(ink, stroke_width=0, stroke_offset=None):
+        def draw_text(ink: int, stroke_width: float = 0) -> None:
             mode = self.fontmode
             if stroke_width == 0 and embedded_color:
                 mode = "RGBA"
             coord = []
-            start = []
             for i in range(2):
                 coord.append(int(xy[i]))
-                start.append(math.modf(xy[i])[0])
+            start = (math.modf(xy[0])[0], math.modf(xy[1])[0])
             try:
-                mask, offset = font.getmask2(
+                mask, offset = font.getmask2(  # type: ignore[union-attr,misc]
                     text,
                     mode,
                     direction=direction,
@@ -509,10 +649,10 @@ class ImageDraw:
                     *args,
                     **kwargs,
                 )
-                coord = coord[0] + offset[0], coord[1] + offset[1]
+                coord = [coord[0] + offset[0], coord[1] + offset[1]]
             except AttributeError:
                 try:
-                    mask = font.getmask(
+                    mask = font.getmask(  # type: ignore[misc]
                         text,
                         mode,
                         direction,
@@ -527,15 +667,17 @@ class ImageDraw:
                     )
                 except TypeError:
                     mask = font.getmask(text)
-            if stroke_offset:
-                coord = coord[0] + stroke_offset[0], coord[1] + stroke_offset[1]
             if mode == "RGBA":
                 # font.getmask2(mode="RGBA") returns color in RGB bands and mask in A
                 # extract mask and set text alpha
                 color, mask = mask, mask.getband(3)
-                color.fillband(3, (ink >> 24) & 0xFF)
+                ink_alpha = struct.pack("i", ink)[3]
+                color.fillband(3, ink_alpha)
                 x, y = coord
-                self.im.paste(color, (x, y, x + mask.size[0], y + mask.size[1]), mask)
+                if self.im is not None:
+                    self.im.paste(
+                        color, (x, y, x + mask.size[0], y + mask.size[1]), mask
+                    )
             else:
                 self.draw.draw_bitmap(coord, mask, ink)
 
@@ -557,20 +699,27 @@ class ImageDraw:
 
     def multiline_text(
         self,
-        xy,
-        text,
-        fill=None,
-        font=None,
-        anchor=None,
-        spacing=4,
-        align="left",
-        direction=None,
-        features=None,
-        language=None,
-        stroke_width=0,
-        stroke_fill=None,
-        embedded_color=False,
-    ):
+        xy: tuple[float, float],
+        text: AnyStr,
+        fill: _Ink | None = None,
+        font: (
+            ImageFont.ImageFont
+            | ImageFont.FreeTypeFont
+            | ImageFont.TransposedFont
+            | None
+        ) = None,
+        anchor: str | None = None,
+        spacing: float = 4,
+        align: str = "left",
+        direction: str | None = None,
+        features: list[str] | None = None,
+        language: str | None = None,
+        stroke_width: float = 0,
+        stroke_fill: _Ink | None = None,
+        embedded_color: bool = False,
+        *,
+        font_size: float | None = None,
+    ) -> None:
         if direction == "ttb":
             msg = "ttb direction is unsupported for multiline text"
             raise ValueError(msg)
@@ -584,8 +733,11 @@ class ImageDraw:
             msg = "anchor not supported for multiline text"
             raise ValueError(msg)
 
+        if font is None:
+            font = self._getfont(font_size)
+
         widths = []
-        max_width = 0
+        max_width: float = 0
         lines = self._multiline_split(text)
         line_spacing = self._multiline_spacing(font, spacing, stroke_width)
         for line in lines:
@@ -639,13 +791,20 @@ class ImageDraw:
 
     def textlength(
         self,
-        text,
-        font=None,
-        direction=None,
-        features=None,
-        language=None,
-        embedded_color=False,
-    ):
+        text: AnyStr,
+        font: (
+            ImageFont.ImageFont
+            | ImageFont.FreeTypeFont
+            | ImageFont.TransposedFont
+            | None
+        ) = None,
+        direction: str | None = None,
+        features: list[str] | None = None,
+        language: str | None = None,
+        embedded_color: bool = False,
+        *,
+        font_size: float | None = None,
+    ) -> float:
         """Get the length of a given string, in pixels with 1/64 precision."""
         if self._multiline_check(text):
             msg = "can't measure length of multiline text"
@@ -655,29 +814,39 @@ class ImageDraw:
             raise ValueError(msg)
 
         if font is None:
-            font = self.getfont()
+            font = self._getfont(font_size)
         mode = "RGBA" if embedded_color else self.fontmode
         return font.getlength(text, mode, direction, features, language)
 
     def textbbox(
         self,
-        xy,
-        text,
-        font=None,
-        anchor=None,
-        spacing=4,
-        align="left",
-        direction=None,
-        features=None,
-        language=None,
-        stroke_width=0,
-        embedded_color=False,
-    ):
+        xy: tuple[float, float],
+        text: AnyStr,
+        font: (
+            ImageFont.ImageFont
+            | ImageFont.FreeTypeFont
+            | ImageFont.TransposedFont
+            | None
+        ) = None,
+        anchor: str | None = None,
+        spacing: float = 4,
+        align: str = "left",
+        direction: str | None = None,
+        features: list[str] | None = None,
+        language: str | None = None,
+        stroke_width: float = 0,
+        embedded_color: bool = False,
+        *,
+        font_size: float | None = None,
+    ) -> tuple[float, float, float, float]:
         """Get the bounding box of a given string, in pixels."""
         if embedded_color and self.mode not in ("RGB", "RGBA"):
             msg = "Embedded color supported only in RGB and RGBA modes"
             raise ValueError(msg)
 
+        if font is None:
+            font = self._getfont(font_size)
+
         if self._multiline_check(text):
             return self.multiline_textbbox(
                 xy,
@@ -693,8 +862,6 @@ class ImageDraw:
                 embedded_color,
             )
 
-        if font is None:
-            font = self.getfont()
         mode = "RGBA" if embedded_color else self.fontmode
         bbox = font.getbbox(
             text, mode, direction, features, language, stroke_width, anchor
@@ -703,18 +870,25 @@ class ImageDraw:
 
     def multiline_textbbox(
         self,
-        xy,
-        text,
-        font=None,
-        anchor=None,
-        spacing=4,
-        align="left",
-        direction=None,
-        features=None,
-        language=None,
-        stroke_width=0,
-        embedded_color=False,
-    ):
+        xy: tuple[float, float],
+        text: AnyStr,
+        font: (
+            ImageFont.ImageFont
+            | ImageFont.FreeTypeFont
+            | ImageFont.TransposedFont
+            | None
+        ) = None,
+        anchor: str | None = None,
+        spacing: float = 4,
+        align: str = "left",
+        direction: str | None = None,
+        features: list[str] | None = None,
+        language: str | None = None,
+        stroke_width: float = 0,
+        embedded_color: bool = False,
+        *,
+        font_size: float | None = None,
+    ) -> tuple[float, float, float, float]:
         if direction == "ttb":
             msg = "ttb direction is unsupported for multiline text"
             raise ValueError(msg)
@@ -728,8 +902,11 @@ class ImageDraw:
             msg = "anchor not supported for multiline text"
             raise ValueError(msg)
 
+        if font is None:
+            font = self._getfont(font_size)
+
         widths = []
-        max_width = 0
+        max_width: float = 0
         lines = self._multiline_split(text)
         line_spacing = self._multiline_spacing(font, spacing, stroke_width)
         for line in lines:
@@ -750,7 +927,7 @@ class ImageDraw:
         elif anchor[1] == "d":
             top -= (len(lines) - 1) * line_spacing
 
-        bbox = None
+        bbox: tuple[float, float, float, float] | None = None
 
         for idx, line in enumerate(lines):
             left = xy[0]
@@ -801,7 +978,7 @@ class ImageDraw:
         return bbox
 
 
-def Draw(im, mode=None):
+def Draw(im: Image.Image, mode: str | None = None) -> ImageDraw:
     """
     A simple 2D drawing interface for PIL images.
 
@@ -813,45 +990,38 @@ def Draw(im, mode=None):
        defaults to the mode of the image.
     """
     try:
-        return im.getdraw(mode)
+        return getattr(im, "getdraw")(mode)
     except AttributeError:
         return ImageDraw(im, mode)
 
 
-# experimental access to the outline API
-try:
-    Outline = Image.core.outline
-except AttributeError:
-    Outline = None
-
-
-def getdraw(im=None, hints=None):
+def getdraw(
+    im: Image.Image | None = None, hints: list[str] | None = None
+) -> tuple[ImageDraw2.Draw | None, ModuleType]:
     """
-    (Experimental) A more advanced 2D drawing interface for PIL images,
-    based on the WCK interface.
-
     :param im: The image to draw in.
-    :param hints: An optional list of hints.
+    :param hints: An optional list of hints. Deprecated.
     :returns: A (drawing context, drawing resource factory) tuple.
     """
-    # FIXME: this needs more work!
-    # FIXME: come up with a better 'hints' scheme.
-    handler = None
-    if not hints or "nicest" in hints:
-        try:
-            from . import _imagingagg as handler
-        except ImportError:
-            pass
-    if handler is None:
-        from . import ImageDraw2 as handler
-    if im:
-        im = handler.Draw(im)
-    return im, handler
+    if hints is not None:
+        deprecate("'hints' parameter", 12)
+    from . import ImageDraw2
+
+    draw = ImageDraw2.Draw(im) if im is not None else None
+    return draw, ImageDraw2
 
 
-def floodfill(image, xy, value, border=None, thresh=0):
+def floodfill(
+    image: Image.Image,
+    xy: tuple[int, int],
+    value: float | tuple[int, ...],
+    border: float | tuple[int, ...] | None = None,
+    thresh: float = 0,
+) -> None:
     """
-    (experimental) Fills a bounded region with a given color.
+    .. warning:: This method is experimental.
+
+    Fills a bounded region with a given color.
 
     :param image: Target image.
     :param xy: Seed position (a 2-item coordinate tuple). See
@@ -869,6 +1039,7 @@ def floodfill(image, xy, value, border=None, thresh=0):
     # based on an implementation by Eric S. Raymond
     # amended by yo1995 @20180806
     pixel = image.load()
+    assert pixel is not None
     x, y = xy
     try:
         background = pixel[x, y]
@@ -897,7 +1068,7 @@ def floodfill(image, xy, value, border=None, thresh=0):
                     if border is None:
                         fill = _color_diff(p, background) <= thresh
                     else:
-                        fill = p != value and p != border
+                        fill = p not in (value, border)
                     if fill:
                         pixel[s, t] = value
                         new_edge.add((s, t))
@@ -905,11 +1076,13 @@ def floodfill(image, xy, value, border=None, thresh=0):
         edge = new_edge
 
 
-def _compute_regular_polygon_vertices(bounding_circle, n_sides, rotation):
+def _compute_regular_polygon_vertices(
+    bounding_circle: Sequence[Sequence[float] | float], n_sides: int, rotation: float
+) -> list[tuple[float, float]]:
     """
     Generate a list of vertices for a 2D regular polygon.
 
-    :param bounding_circle: The bounding circle is a tuple defined
+    :param bounding_circle: The bounding circle is a sequence defined
         by a point and radius. The polygon is inscribed in this circle.
         (e.g. ``bounding_circle=(x, y, r)`` or ``((x, y), r)``)
     :param n_sides: Number of sides
@@ -947,7 +1120,7 @@ def _compute_regular_polygon_vertices(bounding_circle, n_sides, rotation):
     # 1. Error Handling
     # 1.1 Check `n_sides` has an appropriate value
     if not isinstance(n_sides, int):
-        msg = "n_sides should be an int"
+        msg = "n_sides should be an int"  # type: ignore[unreachable]
         raise TypeError(msg)
     if n_sides < 3:
         msg = "n_sides should be an int > 2"
@@ -955,13 +1128,28 @@ def _compute_regular_polygon_vertices(bounding_circle, n_sides, rotation):
 
     # 1.2 Check `bounding_circle` has an appropriate value
     if not isinstance(bounding_circle, (list, tuple)):
-        msg = "bounding_circle should be a tuple"
+        msg = "bounding_circle should be a sequence"
         raise TypeError(msg)
 
     if len(bounding_circle) == 3:
-        *centroid, polygon_radius = bounding_circle
-    elif len(bounding_circle) == 2:
-        centroid, polygon_radius = bounding_circle
+        if not all(isinstance(i, (int, float)) for i in bounding_circle):
+            msg = "bounding_circle should only contain numeric data"
+            raise ValueError(msg)
+
+        *centroid, polygon_radius = cast(list[float], list(bounding_circle))
+    elif len(bounding_circle) == 2 and isinstance(bounding_circle[0], (list, tuple)):
+        if not all(
+            isinstance(i, (int, float)) for i in bounding_circle[0]
+        ) or not isinstance(bounding_circle[1], (int, float)):
+            msg = "bounding_circle should only contain numeric data"
+            raise ValueError(msg)
+
+        if len(bounding_circle[0]) != 2:
+            msg = "bounding_circle centre should contain 2D coordinates (e.g. (x, y))"
+            raise ValueError(msg)
+
+        centroid = cast(list[float], list(bounding_circle[0]))
+        polygon_radius = cast(float, bounding_circle[1])
     else:
         msg = (
             "bounding_circle should contain 2D coordinates "
@@ -969,25 +1157,17 @@ def _compute_regular_polygon_vertices(bounding_circle, n_sides, rotation):
         )
         raise ValueError(msg)
 
-    if not all(isinstance(i, (int, float)) for i in (*centroid, polygon_radius)):
-        msg = "bounding_circle should only contain numeric data"
-        raise ValueError(msg)
-
-    if not len(centroid) == 2:
-        msg = "bounding_circle centre should contain 2D coordinates (e.g. (x, y))"
-        raise ValueError(msg)
-
     if polygon_radius <= 0:
         msg = "bounding_circle radius should be > 0"
         raise ValueError(msg)
 
     # 1.3 Check `rotation` has an appropriate value
     if not isinstance(rotation, (int, float)):
-        msg = "rotation should be an int or float"
+        msg = "rotation should be an int or float"  # type: ignore[unreachable]
         raise ValueError(msg)
 
     # 2. Define Helper Functions
-    def _apply_rotation(point, degrees, centroid):
+    def _apply_rotation(point: list[float], degrees: float) -> tuple[float, float]:
         return (
             round(
                 point[0] * math.cos(math.radians(360 - degrees))
@@ -1003,11 +1183,11 @@ def _compute_regular_polygon_vertices(bounding_circle, n_sides, rotation):
             ),
         )
 
-    def _compute_polygon_vertex(centroid, polygon_radius, angle):
+    def _compute_polygon_vertex(angle: float) -> tuple[float, float]:
         start_point = [polygon_radius, 0]
-        return _apply_rotation(start_point, angle, centroid)
+        return _apply_rotation(start_point, angle)
 
-    def _get_angles(n_sides, rotation):
+    def _get_angles(n_sides: int, rotation: float) -> list[float]:
         angles = []
         degrees = 360 / n_sides
         # Start with the bottom left polygon vertex
@@ -1023,16 +1203,16 @@ def _compute_regular_polygon_vertices(bounding_circle, n_sides, rotation):
     angles = _get_angles(n_sides, rotation)
 
     # 4. Compute Vertices
-    return [
-        _compute_polygon_vertex(centroid, polygon_radius, angle) for angle in angles
-    ]
+    return [_compute_polygon_vertex(angle) for angle in angles]
 
 
-def _color_diff(color1, color2):
+def _color_diff(
+    color1: float | tuple[int, ...], color2: float | tuple[int, ...]
+) -> float:
     """
     Uses 1-norm distance to calculate difference between two values.
     """
-    if isinstance(color2, tuple):
-        return sum(abs(color1[i] - color2[i]) for i in range(0, len(color2)))
-    else:
-        return abs(color1 - color2)
+    first = color1 if isinstance(color1, tuple) else (color1,)
+    second = color2 if isinstance(color2, tuple) else (color2,)
+
+    return sum(abs(first[i] - second[i]) for i in range(0, len(second)))
diff --git a/src/PIL/ImageDraw2.py b/src/PIL/ImageDraw2.py
index 7ce0224a6..3d68658ed 100644
--- a/src/PIL/ImageDraw2.py
+++ b/src/PIL/ImageDraw2.py
@@ -22,15 +22,18 @@
 
 .. seealso:: :py:mod:`PIL.ImageDraw`
 """
+from __future__ import annotations
 
+from typing import Any, AnyStr, BinaryIO
 
 from . import Image, ImageColor, ImageDraw, ImageFont, ImagePath
+from ._typing import Coords, StrOrBytesPath
 
 
 class Pen:
     """Stores an outline color and width."""
 
-    def __init__(self, color, width=1, opacity=255):
+    def __init__(self, color: str, width: int = 1, opacity: int = 255) -> None:
         self.color = ImageColor.getrgb(color)
         self.width = width
 
@@ -38,14 +41,16 @@ class Pen:
 class Brush:
     """Stores a fill color"""
 
-    def __init__(self, color, opacity=255):
+    def __init__(self, color: str, opacity: int = 255) -> None:
         self.color = ImageColor.getrgb(color)
 
 
 class Font:
     """Stores a TrueType font and color"""
 
-    def __init__(self, color, file, size=12):
+    def __init__(
+        self, color: str, file: StrOrBytesPath | BinaryIO, size: float = 12
+    ) -> None:
         # FIXME: add support for bitmap fonts
         self.color = ImageColor.getrgb(color)
         self.font = ImageFont.truetype(file, size)
@@ -56,17 +61,32 @@ class Draw:
     (Experimental) WCK-style drawing interface
     """
 
-    def __init__(self, image, size=None, color=None):
-        if not hasattr(image, "im"):
+    def __init__(
+        self,
+        image: Image.Image | str,
+        size: tuple[int, int] | list[int] | None = None,
+        color: float | tuple[float, ...] | str | None = None,
+    ) -> None:
+        if isinstance(image, str):
+            if size is None:
+                msg = "If image argument is mode string, size must be a list or tuple"
+                raise ValueError(msg)
             image = Image.new(image, size, color)
         self.draw = ImageDraw.Draw(image)
         self.image = image
-        self.transform = None
+        self.transform: tuple[float, float, float, float, float, float] | None = None
 
-    def flush(self):
+    def flush(self) -> Image.Image:
         return self.image
 
-    def render(self, op, xy, pen, brush=None):
+    def render(
+        self,
+        op: str,
+        xy: Coords,
+        pen: Pen | Brush | None,
+        brush: Brush | Pen | None = None,
+        **kwargs: Any,
+    ) -> None:
         # handle color arguments
         outline = fill = None
         width = 1
@@ -82,63 +102,89 @@ class Draw:
             fill = pen.color
         # handle transformation
         if self.transform:
-            xy = ImagePath.Path(xy)
-            xy.transform(self.transform)
+            path = ImagePath.Path(xy)
+            path.transform(self.transform)
+            xy = path
         # render the item
-        if op == "line":
-            self.draw.line(xy, fill=outline, width=width)
+        if op in ("arc", "line"):
+            kwargs.setdefault("fill", outline)
         else:
-            getattr(self.draw, op)(xy, fill=fill, outline=outline)
+            kwargs.setdefault("fill", fill)
+            kwargs.setdefault("outline", outline)
+        if op == "line":
+            kwargs.setdefault("width", width)
+        getattr(self.draw, op)(xy, **kwargs)
 
-    def settransform(self, offset):
+    def settransform(self, offset: tuple[float, float]) -> None:
         """Sets a transformation offset."""
         (xoffset, yoffset) = offset
         self.transform = (1, 0, xoffset, 0, 1, yoffset)
 
-    def arc(self, xy, start, end, *options):
+    def arc(
+        self,
+        xy: Coords,
+        pen: Pen | Brush | None,
+        start: float,
+        end: float,
+        *options: Any,
+    ) -> None:
         """
         Draws an arc (a portion of a circle outline) between the start and end
         angles, inside the given bounding box.
 
         .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.arc`
         """
-        self.render("arc", xy, start, end, *options)
+        self.render("arc", xy, pen, *options, start=start, end=end)
 
-    def chord(self, xy, start, end, *options):
+    def chord(
+        self,
+        xy: Coords,
+        pen: Pen | Brush | None,
+        start: float,
+        end: float,
+        *options: Any,
+    ) -> None:
         """
         Same as :py:meth:`~PIL.ImageDraw2.Draw.arc`, but connects the end points
         with a straight line.
 
         .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.chord`
         """
-        self.render("chord", xy, start, end, *options)
+        self.render("chord", xy, pen, *options, start=start, end=end)
 
-    def ellipse(self, xy, *options):
+    def ellipse(self, xy: Coords, pen: Pen | Brush | None, *options: Any) -> None:
         """
         Draws an ellipse inside the given bounding box.
 
         .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.ellipse`
         """
-        self.render("ellipse", xy, *options)
+        self.render("ellipse", xy, pen, *options)
 
-    def line(self, xy, *options):
+    def line(self, xy: Coords, pen: Pen | Brush | None, *options: Any) -> None:
         """
         Draws a line between the coordinates in the ``xy`` list.
 
         .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.line`
         """
-        self.render("line", xy, *options)
+        self.render("line", xy, pen, *options)
 
-    def pieslice(self, xy, start, end, *options):
+    def pieslice(
+        self,
+        xy: Coords,
+        pen: Pen | Brush | None,
+        start: float,
+        end: float,
+        *options: Any,
+    ) -> None:
         """
         Same as arc, but also draws straight lines between the end points and the
         center of the bounding box.
 
         .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.pieslice`
         """
-        self.render("pieslice", xy, start, end, *options)
+        self.render("pieslice", xy, pen, *options, start=start, end=end)
 
-    def polygon(self, xy, *options):
+    def polygon(self, xy: Coords, pen: Pen | Brush | None, *options: Any) -> None:
         """
         Draws a polygon.
 
@@ -149,28 +195,31 @@ class Draw:
 
         .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.polygon`
         """
-        self.render("polygon", xy, *options)
+        self.render("polygon", xy, pen, *options)
 
-    def rectangle(self, xy, *options):
+    def rectangle(self, xy: Coords, pen: Pen | Brush | None, *options: Any) -> None:
         """
         Draws a rectangle.
 
         .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.rectangle`
         """
-        self.render("rectangle", xy, *options)
+        self.render("rectangle", xy, pen, *options)
 
-    def text(self, xy, text, font):
+    def text(self, xy: tuple[float, float], text: AnyStr, font: Font) -> None:
         """
         Draws the string at the given position.
 
         .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.text`
         """
         if self.transform:
-            xy = ImagePath.Path(xy)
-            xy.transform(self.transform)
+            path = ImagePath.Path(xy)
+            path.transform(self.transform)
+            xy = path
         self.draw.text(xy, text, font=font.font, fill=font.color)
 
-    def textbbox(self, xy, text, font):
+    def textbbox(
+        self, xy: tuple[float, float], text: AnyStr, font: Font
+    ) -> tuple[float, float, float, float]:
         """
         Returns bounding box (in pixels) of given text.
 
@@ -179,11 +228,12 @@ class Draw:
         .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.textbbox`
         """
         if self.transform:
-            xy = ImagePath.Path(xy)
-            xy.transform(self.transform)
+            path = ImagePath.Path(xy)
+            path.transform(self.transform)
+            xy = path
         return self.draw.textbbox(xy, text, font=font.font)
 
-    def textlength(self, text, font):
+    def textlength(self, text: AnyStr, font: Font) -> float:
         """
         Returns length (in pixels) of given text.
         This is the amount by which following text should be offset.
diff --git a/src/PIL/ImageEnhance.py b/src/PIL/ImageEnhance.py
index 3b79d5c46..0e7e6dd8a 100644
--- a/src/PIL/ImageEnhance.py
+++ b/src/PIL/ImageEnhance.py
@@ -17,12 +17,16 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 from . import Image, ImageFilter, ImageStat
 
 
 class _Enhance:
-    def enhance(self, factor):
+    image: Image.Image
+    degenerate: Image.Image
+
+    def enhance(self, factor: float) -> Image.Image:
         """
         Returns an enhanced image.
 
@@ -45,13 +49,15 @@ class Color(_Enhance):
     the original image.
     """
 
-    def __init__(self, image):
+    def __init__(self, image: Image.Image) -> None:
         self.image = image
         self.intermediate_mode = "L"
         if "A" in image.getbands():
             self.intermediate_mode = "LA"
 
-        self.degenerate = image.convert(self.intermediate_mode).convert(image.mode)
+        if self.intermediate_mode != image.mode:
+            image = image.convert(self.intermediate_mode).convert(image.mode)
+        self.degenerate = image
 
 
 class Contrast(_Enhance):
@@ -59,16 +65,20 @@ class Contrast(_Enhance):
 
     This class can be used to control the contrast of an image, similar
     to the contrast control on a TV set. An enhancement factor of 0.0
-    gives a solid grey image. A factor of 1.0 gives the original image.
+    gives a solid gray image. A factor of 1.0 gives the original image.
     """
 
-    def __init__(self, image):
+    def __init__(self, image: Image.Image) -> None:
         self.image = image
-        mean = int(ImageStat.Stat(image.convert("L")).mean[0] + 0.5)
-        self.degenerate = Image.new("L", image.size, mean).convert(image.mode)
+        if image.mode != "L":
+            image = image.convert("L")
+        mean = int(ImageStat.Stat(image).mean[0] + 0.5)
+        self.degenerate = Image.new("L", image.size, mean)
+        if self.degenerate.mode != self.image.mode:
+            self.degenerate = self.degenerate.convert(self.image.mode)
 
-        if "A" in image.getbands():
-            self.degenerate.putalpha(image.getchannel("A"))
+        if "A" in self.image.getbands():
+            self.degenerate.putalpha(self.image.getchannel("A"))
 
 
 class Brightness(_Enhance):
@@ -79,7 +89,7 @@ class Brightness(_Enhance):
     original image.
     """
 
-    def __init__(self, image):
+    def __init__(self, image: Image.Image) -> None:
         self.image = image
         self.degenerate = Image.new(image.mode, image.size, 0)
 
@@ -95,7 +105,7 @@ class Sharpness(_Enhance):
     original image, and a factor of 2.0 gives a sharpened image.
     """
 
-    def __init__(self, image):
+    def __init__(self, image: Image.Image) -> None:
         self.image = image
         self.degenerate = image.filter(ImageFilter.SMOOTH)
 
diff --git a/src/PIL/ImageFile.py b/src/PIL/ImageFile.py
index 8e4f7dfb2..7f27d54dc 100644
--- a/src/PIL/ImageFile.py
+++ b/src/PIL/ImageFile.py
@@ -26,15 +26,23 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
+import abc
 import io
 import itertools
+import os
 import struct
 import sys
+from typing import IO, TYPE_CHECKING, Any, NamedTuple, cast
 
 from . import Image
+from ._deprecate import deprecate
 from ._util import is_path
 
+if TYPE_CHECKING:
+    from ._typing import StrOrBytesPath
+
 MAXBLOCK = 65536
 
 SAFEBLOCK = 1024 * 1024
@@ -61,22 +69,39 @@ Dict of known error codes returned from :meth:`.PyDecoder.decode`,
 # Helpers
 
 
-def raise_oserror(error):
+def _get_oserror(error: int, *, encoder: bool) -> OSError:
     try:
         msg = Image.core.getcodecstatus(error)
     except AttributeError:
         msg = ERRORS.get(error)
     if not msg:
-        msg = f"decoder error {error}"
-    msg += " when reading image file"
-    raise OSError(msg)
+        msg = f"{'encoder' if encoder else 'decoder'} error {error}"
+    msg += f" when {'writing' if encoder else 'reading'} image file"
+    return OSError(msg)
 
 
-def _tilesort(t):
+def raise_oserror(error: int) -> OSError:
+    deprecate(
+        "raise_oserror",
+        12,
+        action="It is only useful for translating error codes returned by a codec's "
+        "decode() method, which ImageFile already does automatically.",
+    )
+    raise _get_oserror(error, encoder=False)
+
+
+def _tilesort(t: _Tile) -> int:
     # sort on offset
     return t[2]
 
 
+class _Tile(NamedTuple):
+    codec_name: str
+    extents: tuple[int, int, int, int] | None
+    offset: int
+    args: tuple[Any, ...] | str | None
+
+
 #
 # --------------------------------------------------------------------
 # ImageFile base class
@@ -85,32 +110,34 @@ def _tilesort(t):
 class ImageFile(Image.Image):
     """Base class for image file format handlers."""
 
-    def __init__(self, fp=None, filename=None):
+    def __init__(
+        self, fp: StrOrBytesPath | IO[bytes], filename: str | bytes | None = None
+    ) -> None:
         super().__init__()
 
         self._min_frame = 0
 
-        self.custom_mimetype = None
+        self.custom_mimetype: str | None = None
 
-        self.tile = None
+        self.tile: list[_Tile] = []
         """ A list of tile descriptors, or ``None`` """
 
         self.readonly = 1  # until we know better
 
-        self.decoderconfig = ()
+        self.decoderconfig: tuple[Any, ...] = ()
         self.decodermaxblock = MAXBLOCK
 
         if is_path(fp):
             # filename
             self.fp = open(fp, "rb")
-            self.filename = fp
+            self.filename = os.fspath(fp)
             self._exclusive_fp = True
         else:
             # stream
-            self.fp = fp
-            self.filename = filename
+            self.fp = cast(IO[bytes], fp)
+            self.filename = filename if filename is not None else ""
             # can be overridden
-            self._exclusive_fp = None
+            self._exclusive_fp = False
 
         try:
             try:
@@ -133,17 +160,21 @@ class ImageFile(Image.Image):
                 self.fp.close()
             raise
 
-    def get_format_mimetype(self):
+    def _open(self) -> None:
+        pass
+
+    def get_format_mimetype(self) -> str | None:
         if self.custom_mimetype:
             return self.custom_mimetype
         if self.format is not None:
             return Image.MIME.get(self.format.upper())
+        return None
 
-    def __setstate__(self, state):
+    def __setstate__(self, state: list[Any]) -> None:
         self.tile = []
         super().__setstate__(state)
 
-    def verify(self):
+    def verify(self) -> None:
         """Check file integrity"""
 
         # raise exception if something's wrong.  must be called
@@ -152,10 +183,10 @@ class ImageFile(Image.Image):
             self.fp.close()
         self.fp = None
 
-    def load(self):
+    def load(self) -> Image.core.PixelAccess | None:
         """Load image data based on tile list"""
 
-        if self.tile is None:
+        if not self.tile and self._im is None:
             msg = "cannot load this image"
             raise OSError(msg)
 
@@ -163,7 +194,7 @@ class ImageFile(Image.Image):
         if not self.tile:
             return pixel
 
-        self.map = None
+        self.map: mmap.mmap | None = None
         use_mmap = self.filename and len(self.tile) == 1
         # As of pypy 2.1.0, memory mapping was failing here.
         use_mmap = use_mmap and not hasattr(sys, "pypy_version_info")
@@ -171,24 +202,27 @@ class ImageFile(Image.Image):
         readonly = 0
 
         # look for read/seek overrides
-        try:
+        if hasattr(self, "load_read"):
             read = self.load_read
             # don't use mmap if there are custom read/seek functions
             use_mmap = False
-        except AttributeError:
+        else:
             read = self.fp.read
 
-        try:
+        if hasattr(self, "load_seek"):
             seek = self.load_seek
             use_mmap = False
-        except AttributeError:
+        else:
             seek = self.fp.seek
 
         if use_mmap:
             # try memory mapping
             decoder_name, extents, offset, args = self.tile[0]
+            if isinstance(args, str):
+                args = (args, 0, 1)
             if (
                 decoder_name == "raw"
+                and isinstance(args, tuple)
                 and len(args) >= 3
                 and args[0] == self.mode
                 and args[0] in Image._MAPMODES
@@ -200,8 +234,8 @@ class ImageFile(Image.Image):
                     with open(self.filename) as fp:
                         self.map = mmap.mmap(fp.fileno(), 0, access=mmap.ACCESS_READ)
                     if offset + self.size[1] * args[1] > self.map.size():
-                        # buffer is not large enough
-                        raise OSError
+                        msg = "buffer is not large enough"
+                        raise OSError(msg)
                     self.im = Image.core.map_buffer(
                         self.map, self.size, decoder_name, offset, args
                     )
@@ -219,11 +253,8 @@ class ImageFile(Image.Image):
             # sort tiles in file order
             self.tile.sort(key=_tilesort)
 
-            try:
-                # FIXME: This is a hack to handle TIFF's JpegTables tag.
-                prefix = self.tile_prefix
-            except AttributeError:
-                prefix = b""
+            # FIXME: This is a hack to handle TIFF's JpegTables tag.
+            prefix = getattr(self, "tile_prefix", b"")
 
             # Remove consecutive duplicates that only differ by their offset
             self.tile = [
@@ -285,38 +316,38 @@ class ImageFile(Image.Image):
 
         if not self.map and not LOAD_TRUNCATED_IMAGES and err_code < 0:
             # still raised if decoder fails to return anything
-            raise_oserror(err_code)
+            raise _get_oserror(err_code, encoder=False)
 
         return Image.Image.load(self)
 
-    def load_prepare(self):
+    def load_prepare(self) -> None:
         # create image memory if necessary
-        if not self.im or self.im.mode != self.mode or self.im.size != self.size:
+        if self._im is None:
             self.im = Image.core.new(self.mode, self.size)
         # create palette (optional)
         if self.mode == "P":
             Image.Image.load(self)
 
-    def load_end(self):
+    def load_end(self) -> None:
         # may be overridden
         pass
 
     # may be defined for contained formats
-    # def load_seek(self, pos):
+    # def load_seek(self, pos: int) -> None:
     #     pass
 
     # may be defined for blocked formats (e.g. PNG)
-    # def load_read(self, bytes):
+    # def load_read(self, read_bytes: int) -> bytes:
     #     pass
 
-    def _seek_check(self, frame):
+    def _seek_check(self, frame: int) -> bool:
         if (
             frame < self._min_frame
             # Only check upper limit on frames if additional seek operations
             # are not required to do so
             or (
                 not (hasattr(self, "_n_frames") and self._n_frames is None)
-                and frame >= self.n_frames + self._min_frame
+                and frame >= getattr(self, "n_frames") + self._min_frame
             )
         ):
             msg = "attempt to seek outside sequence"
@@ -325,6 +356,15 @@ class ImageFile(Image.Image):
         return self.tell() != frame
 
 
+class StubHandler:
+    def open(self, im: StubImageFile) -> None:
+        pass
+
+    @abc.abstractmethod
+    def load(self, im: StubImageFile) -> Image.Image:
+        pass
+
+
 class StubImageFile(ImageFile):
     """
     Base class for stub image loaders.
@@ -333,11 +373,11 @@ class StubImageFile(ImageFile):
     certain format, but relies on external code to load the file.
     """
 
-    def _open(self):
+    def _open(self) -> None:
         msg = "StubImageFile subclass must implement _open"
         raise NotImplementedError(msg)
 
-    def load(self):
+    def load(self) -> Image.core.PixelAccess | None:
         loader = self._load()
         if loader is None:
             msg = f"cannot find loader for this {self.format} file"
@@ -345,11 +385,11 @@ class StubImageFile(ImageFile):
         image = loader.load(self)
         assert image is not None
         # become the other object (!)
-        self.__class__ = image.__class__
+        self.__class__ = image.__class__  # type: ignore[assignment]
         self.__dict__ = image.__dict__
         return image.load()
 
-    def _load(self):
+    def _load(self) -> StubHandler | None:
         """(Hook) Find actual image loader."""
         msg = "StubImageFile subclass must implement _load"
         raise NotImplementedError(msg)
@@ -362,13 +402,13 @@ class Parser:
     """
 
     incremental = None
-    image = None
-    data = None
-    decoder = None
+    image: Image.Image | None = None
+    data: bytes | None = None
+    decoder: Image.core.ImagingDecoder | PyDecoder | None = None
     offset = 0
     finished = 0
 
-    def reset(self):
+    def reset(self) -> None:
         """
         (Consumer) Reset the parser.  Note that you can only call this
         method immediately after you've created a parser; parser
@@ -376,7 +416,7 @@ class Parser:
         """
         assert self.data is None, "cannot reuse parsers"
 
-    def feed(self, data):
+    def feed(self, data: bytes) -> None:
         """
         (Consumer) Feed data to the parser.
 
@@ -412,7 +452,7 @@ class Parser:
                 if e < 0:
                     # decoding error
                     self.image = None
-                    raise_oserror(e)
+                    raise _get_oserror(e, encoder=False)
                 else:
                     # end of image
                     return
@@ -430,7 +470,6 @@ class Parser:
                 with io.BytesIO(self.data) as fp:
                     im = Image.open(fp)
             except OSError:
-                # traceback.print_exc()
                 pass  # not enough data
             else:
                 flag = hasattr(im, "load_seek") or hasattr(im, "load_read")
@@ -453,13 +492,13 @@ class Parser:
 
                 self.image = im
 
-    def __enter__(self):
+    def __enter__(self) -> Parser:
         return self
 
-    def __exit__(self, *args):
+    def __exit__(self, *args: object) -> None:
         self.close()
 
-    def close(self):
+    def close(self) -> Image.Image:
         """
         (Consumer) Close the stream.
 
@@ -493,7 +532,7 @@ class Parser:
 # --------------------------------------------------------------------
 
 
-def _save(im, fp, tile, bufsize=0):
+def _save(im: Image.Image, fp: IO[bytes], tile: list[_Tile], bufsize: int = 0) -> None:
     """Helper to save image based on tile list
 
     :param im: Image object.
@@ -521,13 +560,20 @@ def _save(im, fp, tile, bufsize=0):
         fp.flush()
 
 
-def _encode_tile(im, fp, tile, bufsize, fh, exc=None):
-    for e, b, o, a in tile:
-        if o > 0:
-            fp.seek(o)
-        encoder = Image._getencoder(im.mode, e, a, im.encoderconfig)
+def _encode_tile(
+    im: Image.Image,
+    fp: IO[bytes],
+    tile: list[_Tile],
+    bufsize: int,
+    fh: int | None,
+    exc: BaseException | None = None,
+) -> None:
+    for encoder_name, extents, offset, args in tile:
+        if offset > 0:
+            fp.seek(offset)
+        encoder = Image._getencoder(im.mode, encoder_name, args, im.encoderconfig)
         try:
-            encoder.setimage(im.im, b)
+            encoder.setimage(im.im, extents)
             if encoder.pushes_fd:
                 encoder.setfd(fp)
                 errcode = encoder.encode_to_pyfd()[1]
@@ -541,15 +587,15 @@ def _encode_tile(im, fp, tile, bufsize, fh, exc=None):
                             break
                 else:
                     # slight speedup: compress to real file object
+                    assert fh is not None
                     errcode = encoder.encode_to_file(fh, bufsize)
             if errcode < 0:
-                msg = f"encoder error {errcode} when writing image file"
-                raise OSError(msg) from exc
+                raise _get_oserror(errcode, encoder=True) from exc
         finally:
             encoder.cleanup()
 
 
-def _safe_read(fp, size):
+def _safe_read(fp: IO[bytes], size: int) -> bytes:
     """
     Reads large blocks in a safe way.  Unlike fp.read(n), this function
     doesn't trust the user.  If the requested size is larger than
@@ -570,49 +616,51 @@ def _safe_read(fp, size):
             msg = "Truncated File Read"
             raise OSError(msg)
         return data
-    data = []
+    blocks: list[bytes] = []
     remaining_size = size
     while remaining_size > 0:
         block = fp.read(min(remaining_size, SAFEBLOCK))
         if not block:
             break
-        data.append(block)
+        blocks.append(block)
         remaining_size -= len(block)
-    if sum(len(d) for d in data) < size:
+    if sum(len(block) for block in blocks) < size:
         msg = "Truncated File Read"
         raise OSError(msg)
-    return b"".join(data)
+    return b"".join(blocks)
 
 
 class PyCodecState:
-    def __init__(self):
+    def __init__(self) -> None:
         self.xsize = 0
         self.ysize = 0
         self.xoff = 0
         self.yoff = 0
 
-    def extents(self):
+    def extents(self) -> tuple[int, int, int, int]:
         return self.xoff, self.yoff, self.xoff + self.xsize, self.yoff + self.ysize
 
 
 class PyCodec:
-    def __init__(self, mode, *args):
-        self.im = None
+    fd: IO[bytes] | None
+
+    def __init__(self, mode: str, *args: Any) -> None:
+        self.im: Image.core.ImagingCore | None = None
         self.state = PyCodecState()
         self.fd = None
         self.mode = mode
         self.init(args)
 
-    def init(self, args):
+    def init(self, args: tuple[Any, ...]) -> None:
         """
         Override to perform codec specific initialization
 
-        :param args: Array of args items from the tile entry
+        :param args: Tuple of arg items from the tile entry
         :returns: None
         """
         self.args = args
 
-    def cleanup(self):
+    def cleanup(self) -> None:
         """
         Override to perform codec specific cleanup
 
@@ -620,7 +668,7 @@ class PyCodec:
         """
         pass
 
-    def setfd(self, fd):
+    def setfd(self, fd: IO[bytes]) -> None:
         """
         Called from ImageFile to set the Python file-like object
 
@@ -629,7 +677,11 @@ class PyCodec:
         """
         self.fd = fd
 
-    def setimage(self, im, extents=None):
+    def setimage(
+        self,
+        im: Image.core.ImagingCore,
+        extents: tuple[int, int, int, int] | None = None,
+    ) -> None:
         """
         Called from ImageFile to set the core output image for the codec
 
@@ -678,10 +730,10 @@ class PyDecoder(PyCodec):
     _pulls_fd = False
 
     @property
-    def pulls_fd(self):
+    def pulls_fd(self) -> bool:
         return self._pulls_fd
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
         """
         Override to perform the decoding process.
 
@@ -690,21 +742,26 @@ class PyDecoder(PyCodec):
             If finished with decoding return -1 for the bytes consumed.
             Err codes are from :data:`.ImageFile.ERRORS`.
         """
-        raise NotImplementedError()
+        msg = "unavailable in base decoder"
+        raise NotImplementedError(msg)
 
-    def set_as_raw(self, data, rawmode=None):
+    def set_as_raw(
+        self, data: bytes, rawmode: str | None = None, extra: tuple[Any, ...] = ()
+    ) -> None:
         """
         Convenience method to set the internal image from a stream of raw data
 
         :param data: Bytes to be set
         :param rawmode: The rawmode to be used for the decoder.
             If not specified, it will default to the mode of the image
+        :param extra: Extra arguments for the decoder.
         :returns: None
         """
 
         if not rawmode:
             rawmode = self.mode
-        d = Image._getdecoder(self.mode, "raw", rawmode)
+        d = Image._getdecoder(self.mode, "raw", rawmode, extra)
+        assert self.im is not None
         d.setimage(self.im, self.state.extents())
         s = d.decode(data)
 
@@ -727,10 +784,10 @@ class PyEncoder(PyCodec):
     _pushes_fd = False
 
     @property
-    def pushes_fd(self):
+    def pushes_fd(self) -> bool:
         return self._pushes_fd
 
-    def encode(self, bufsize):
+    def encode(self, bufsize: int) -> tuple[int, int, bytes]:
         """
         Override to perform the encoding process.
 
@@ -739,9 +796,10 @@ class PyEncoder(PyCodec):
             If finished with encoding return 1 for the error code.
             Err codes are from :data:`.ImageFile.ERRORS`.
         """
-        raise NotImplementedError()
+        msg = "unavailable in base encoder"
+        raise NotImplementedError(msg)
 
-    def encode_to_pyfd(self):
+    def encode_to_pyfd(self) -> tuple[int, int]:
         """
         If ``pushes_fd`` is ``True``, then this method will be used,
         and ``encode()`` will only be called once.
@@ -753,10 +811,11 @@ class PyEncoder(PyCodec):
             return 0, -8  # bad configuration
         bytes_consumed, errcode, data = self.encode(0)
         if data:
+            assert self.fd is not None
             self.fd.write(data)
         return bytes_consumed, errcode
 
-    def encode_to_file(self, fh, bufsize):
+    def encode_to_file(self, fh: int, bufsize: int) -> int:
         """
         :param fh: File handle.
         :param bufsize: Buffer size.
@@ -769,5 +828,5 @@ class PyEncoder(PyCodec):
         while errcode == 0:
             status, errcode, buf = self.encode(bufsize)
             if status > 0:
-                fh.write(buf[status:])
+                os.write(fh, buf[status:])
         return errcode
diff --git a/src/PIL/ImageFilter.py b/src/PIL/ImageFilter.py
index 33bc7cc2e..8b0974b2c 100644
--- a/src/PIL/ImageFilter.py
+++ b/src/PIL/ImageFilter.py
@@ -14,11 +14,23 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
+import abc
 import functools
+from collections.abc import Sequence
+from types import ModuleType
+from typing import TYPE_CHECKING, Any, Callable, cast
+
+if TYPE_CHECKING:
+    from . import _imaging
+    from ._typing import NumpyArray
 
 
 class Filter:
-    pass
+    @abc.abstractmethod
+    def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
+        pass
 
 
 class MultibandFilter(Filter):
@@ -26,7 +38,9 @@ class MultibandFilter(Filter):
 
 
 class BuiltinFilter(MultibandFilter):
-    def filter(self, image):
+    filterargs: tuple[Any, ...]
+
+    def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
         if image.mode == "P":
             msg = "cannot filter palette images"
             raise ValueError(msg)
@@ -35,26 +49,29 @@ class BuiltinFilter(MultibandFilter):
 
 class Kernel(BuiltinFilter):
     """
-    Create a convolution kernel. The current version only
-    supports 3x3 and 5x5 integer and floating point kernels.
+    Create a convolution kernel. This only supports 3x3 and 5x5 integer and floating
+    point kernels.
 
-    In the current version, kernels can only be applied to
-    "L" and "RGB" images.
+    Kernels can only be applied to "L" and "RGB" images.
 
-    :param size: Kernel size, given as (width, height). In the current
-                    version, this must be (3,3) or (5,5).
-    :param kernel: A sequence containing kernel weights. The kernel will
-                   be flipped vertically before being applied to the image.
-    :param scale: Scale factor. If given, the result for each pixel is
-                    divided by this value. The default is the sum of the
-                    kernel weights.
-    :param offset: Offset. If given, this value is added to the result,
-                    after it has been divided by the scale factor.
+    :param size: Kernel size, given as (width, height). This must be (3,3) or (5,5).
+    :param kernel: A sequence containing kernel weights. The kernel will be flipped
+                   vertically before being applied to the image.
+    :param scale: Scale factor. If given, the result for each pixel is divided by this
+                  value. The default is the sum of the kernel weights.
+    :param offset: Offset. If given, this value is added to the result, after it has
+                   been divided by the scale factor.
     """
 
     name = "Kernel"
 
-    def __init__(self, size, kernel, scale=None, offset=0):
+    def __init__(
+        self,
+        size: tuple[int, int],
+        kernel: Sequence[float],
+        scale: float | None = None,
+        offset: float = 0,
+    ) -> None:
         if scale is None:
             # default scale is sum of kernel
             scale = functools.reduce(lambda a, b: a + b, kernel)
@@ -77,11 +94,11 @@ class RankFilter(Filter):
 
     name = "Rank"
 
-    def __init__(self, size, rank):
+    def __init__(self, size: int, rank: int) -> None:
         self.size = size
         self.rank = rank
 
-    def filter(self, image):
+    def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
         if image.mode == "P":
             msg = "cannot filter palette images"
             raise ValueError(msg)
@@ -99,7 +116,7 @@ class MedianFilter(RankFilter):
 
     name = "Median"
 
-    def __init__(self, size=3):
+    def __init__(self, size: int = 3) -> None:
         self.size = size
         self.rank = size * size // 2
 
@@ -114,7 +131,7 @@ class MinFilter(RankFilter):
 
     name = "Min"
 
-    def __init__(self, size=3):
+    def __init__(self, size: int = 3) -> None:
         self.size = size
         self.rank = 0
 
@@ -129,7 +146,7 @@ class MaxFilter(RankFilter):
 
     name = "Max"
 
-    def __init__(self, size=3):
+    def __init__(self, size: int = 3) -> None:
         self.size = size
         self.rank = size * size - 1
 
@@ -145,10 +162,10 @@ class ModeFilter(Filter):
 
     name = "Mode"
 
-    def __init__(self, size=3):
+    def __init__(self, size: int = 3) -> None:
         self.size = size
 
-    def filter(self, image):
+    def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
         return image.modefilter(self.size)
 
 
@@ -157,16 +174,22 @@ class GaussianBlur(MultibandFilter):
     approximates a Gaussian kernel. For details on accuracy see
     <https://www.mia.uni-saarland.de/Publications/gwosdek-ssvm11.pdf>
 
-    :param radius: Standard deviation of the Gaussian kernel.
+    :param radius: Standard deviation of the Gaussian kernel. Either a sequence of two
+                   numbers for x and y, or a single number for both.
     """
 
     name = "GaussianBlur"
 
-    def __init__(self, radius=2):
+    def __init__(self, radius: float | Sequence[float] = 2) -> None:
         self.radius = radius
 
-    def filter(self, image):
-        return image.gaussian_blur(self.radius)
+    def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
+        xy = self.radius
+        if isinstance(xy, (int, float)):
+            xy = (xy, xy)
+        if xy == (0, 0):
+            return image.copy()
+        return image.gaussian_blur(xy)
 
 
 class BoxBlur(MultibandFilter):
@@ -176,21 +199,29 @@ class BoxBlur(MultibandFilter):
     which runs in linear time relative to the size of the image
     for any radius value.
 
-    :param radius: Size of the box in one direction. Radius 0 does not blur,
-                   returns an identical image. Radius 1 takes 1 pixel
-                   in each direction, i.e. 9 pixels in total.
+    :param radius: Size of the box in a direction. Either a sequence of two numbers for
+                   x and y, or a single number for both.
+
+                   Radius 0 does not blur, returns an identical image.
+                   Radius 1 takes 1 pixel in each direction, i.e. 9 pixels in total.
     """
 
     name = "BoxBlur"
 
-    def __init__(self, radius):
-        if radius < 0:
+    def __init__(self, radius: float | Sequence[float]) -> None:
+        xy = radius if isinstance(radius, (tuple, list)) else (radius, radius)
+        if xy[0] < 0 or xy[1] < 0:
             msg = "radius must be >= 0"
             raise ValueError(msg)
         self.radius = radius
 
-    def filter(self, image):
-        return image.box_blur(self.radius)
+    def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
+        xy = self.radius
+        if isinstance(xy, (int, float)):
+            xy = (xy, xy)
+        if xy == (0, 0):
+            return image.copy()
+        return image.box_blur(xy)
 
 
 class UnsharpMask(MultibandFilter):
@@ -206,16 +237,18 @@ class UnsharpMask(MultibandFilter):
 
     .. _digital unsharp masking: https://en.wikipedia.org/wiki/Unsharp_masking#Digital_unsharp_masking
 
-    """  # noqa: E501
+    """
 
     name = "UnsharpMask"
 
-    def __init__(self, radius=2, percent=150, threshold=3):
+    def __init__(
+        self, radius: float = 2, percent: int = 150, threshold: int = 3
+    ) -> None:
         self.radius = radius
         self.percent = percent
         self.threshold = threshold
 
-    def filter(self, image):
+    def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
         return image.unsharp_mask(self.radius, self.percent, self.threshold)
 
 
@@ -360,7 +393,14 @@ class Color3DLUT(MultibandFilter):
 
     name = "Color 3D LUT"
 
-    def __init__(self, size, table, channels=3, target_mode=None, **kwargs):
+    def __init__(
+        self,
+        size: int | tuple[int, int, int],
+        table: Sequence[float] | Sequence[Sequence[int]] | NumpyArray,
+        channels: int = 3,
+        target_mode: str | None = None,
+        **kwargs: bool,
+    ) -> None:
         if channels not in (3, 4):
             msg = "Only 3 or 4 output channels are supported"
             raise ValueError(msg)
@@ -374,23 +414,24 @@ class Color3DLUT(MultibandFilter):
         items = size[0] * size[1] * size[2]
         wrong_size = False
 
-        numpy = None
+        numpy: ModuleType | None = None
         if hasattr(table, "shape"):
             try:
                 import numpy
-            except ImportError:  # pragma: no cover
+            except ImportError:
                 pass
 
         if numpy and isinstance(table, numpy.ndarray):
+            numpy_table: NumpyArray = table
             if copy_table:
-                table = table.copy()
+                numpy_table = numpy_table.copy()
 
-            if table.shape in [
+            if numpy_table.shape in [
                 (items * channels,),
                 (items, channels),
                 (size[2], size[1], size[0], channels),
             ]:
-                table = table.reshape(items * channels)
+                table = numpy_table.reshape(items * channels)
             else:
                 wrong_size = True
 
@@ -400,7 +441,8 @@ class Color3DLUT(MultibandFilter):
 
             # Convert to a flat list
             if table and isinstance(table[0], (list, tuple)):
-                table, raw_table = [], table
+                raw_table = cast(Sequence[Sequence[int]], table)
+                flat_table: list[int] = []
                 for pixel in raw_table:
                     if len(pixel) != channels:
                         msg = (
@@ -408,7 +450,8 @@ class Color3DLUT(MultibandFilter):
                             f"have a length of {channels}."
                         )
                         raise ValueError(msg)
-                    table.extend(pixel)
+                    flat_table.extend(pixel)
+                table = flat_table
 
         if wrong_size or len(table) != items * channels:
             msg = (
@@ -421,7 +464,7 @@ class Color3DLUT(MultibandFilter):
         self.table = table
 
     @staticmethod
-    def _check_size(size):
+    def _check_size(size: Any) -> tuple[int, int, int]:
         try:
             _, _, _ = size
         except ValueError as e:
@@ -429,7 +472,7 @@ class Color3DLUT(MultibandFilter):
             raise ValueError(msg) from e
         except TypeError:
             size = (size, size, size)
-        size = [int(x) for x in size]
+        size = tuple(int(x) for x in size)
         for size_1d in size:
             if not 2 <= size_1d <= 65:
                 msg = "Size should be in [2, 65] range."
@@ -437,7 +480,13 @@ class Color3DLUT(MultibandFilter):
         return size
 
     @classmethod
-    def generate(cls, size, callback, channels=3, target_mode=None):
+    def generate(
+        cls,
+        size: int | tuple[int, int, int],
+        callback: Callable[[float, float, float], tuple[float, ...]],
+        channels: int = 3,
+        target_mode: str | None = None,
+    ) -> Color3DLUT:
         """Generates new LUT using provided callback.
 
         :param size: Size of the table. Passed to the constructor.
@@ -454,7 +503,7 @@ class Color3DLUT(MultibandFilter):
             msg = "Only 3 or 4 output channels are supported"
             raise ValueError(msg)
 
-        table = [0] * (size_1d * size_2d * size_3d * channels)
+        table: list[float] = [0] * (size_1d * size_2d * size_3d * channels)
         idx_out = 0
         for b in range(size_3d):
             for g in range(size_2d):
@@ -472,7 +521,13 @@ class Color3DLUT(MultibandFilter):
             _copy_table=False,
         )
 
-    def transform(self, callback, with_normals=False, channels=None, target_mode=None):
+    def transform(
+        self,
+        callback: Callable[..., tuple[float, ...]],
+        with_normals: bool = False,
+        channels: int | None = None,
+        target_mode: str | None = None,
+    ) -> Color3DLUT:
         """Transforms the table values using provided callback and returns
         a new LUT with altered values.
 
@@ -526,7 +581,7 @@ class Color3DLUT(MultibandFilter):
             _copy_table=False,
         )
 
-    def __repr__(self):
+    def __repr__(self) -> str:
         r = [
             f"{self.__class__.__name__} from {self.table.__class__.__name__}",
             "size={:d}x{:d}x{:d}".format(*self.size),
@@ -536,7 +591,7 @@ class Color3DLUT(MultibandFilter):
             r.append(f"target_mode={self.mode}")
         return "<{}>".format(" ".join(r))
 
-    def filter(self, image):
+    def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
         from . import Image
 
         return image.color_lut_3d(
diff --git a/src/PIL/ImageFont.py b/src/PIL/ImageFont.py
index 3ddc1aaad..d8c265560 100644
--- a/src/PIL/ImageFont.py
+++ b/src/PIL/ImageFont.py
@@ -25,15 +25,32 @@
 # See the README file for information on usage and redistribution.
 #
 
+from __future__ import annotations
+
 import base64
 import os
 import sys
 import warnings
 from enum import IntEnum
 from io import BytesIO
+from types import ModuleType
+from typing import IO, TYPE_CHECKING, Any, BinaryIO, TypedDict, cast
 
-from . import Image
-from ._util import is_directory, is_path
+from . import Image, features
+from ._typing import StrOrBytesPath
+from ._util import DeferredError, is_path
+
+if TYPE_CHECKING:
+    from . import ImageFile
+    from ._imaging import ImagingFont
+    from ._imagingft import Font
+
+
+class Axis(TypedDict):
+    minimum: int | None
+    default: int | None
+    maximum: int | None
+    name: bytes | None
 
 
 class Layout(IntEnum):
@@ -41,12 +58,20 @@ class Layout(IntEnum):
     RAQM = 1
 
 
+MAX_STRING_LENGTH = 1_000_000
+
+
+core: ModuleType | DeferredError
 try:
     from . import _imagingft as core
 except ImportError as ex:
-    from ._util import DeferredError
+    core = DeferredError.new(ex)
 
-    core = DeferredError(ex)
+
+def _string_length_check(text: str | bytes | bytearray) -> None:
+    if MAX_STRING_LENGTH is not None and len(text) > MAX_STRING_LENGTH:
+        msg = "too many characters in string"
+        raise ValueError(msg)
 
 
 # FIXME: add support for pilfont2 format (see FontFile.py)
@@ -68,14 +93,18 @@ except ImportError as ex:
 class ImageFont:
     """PIL font wrapper"""
 
-    def _load_pilfont(self, filename):
+    font: ImagingFont
+
+    def _load_pilfont(self, filename: str) -> None:
         with open(filename, "rb") as fp:
-            image = None
+            image: ImageFile.ImageFile | None = None
+            root = os.path.splitext(filename)[0]
+
             for ext in (".png", ".gif", ".pbm"):
                 if image:
                     image.close()
                 try:
-                    fullname = os.path.splitext(filename)[0] + ext
+                    fullname = root + ext
                     image = Image.open(fullname)
                 except Exception:
                     pass
@@ -85,7 +114,8 @@ class ImageFont:
             else:
                 if image:
                     image.close()
-                msg = "cannot find glyph data file"
+
+                msg = f"cannot find glyph data file {root}.{{gif|pbm|png}}"
                 raise OSError(msg)
 
             self.file = fullname
@@ -93,7 +123,7 @@ class ImageFont:
             self._load_pilfont_data(fp, image)
             image.close()
 
-    def _load_pilfont_data(self, file, image):
+    def _load_pilfont_data(self, file: IO[bytes], image: Image.Image) -> None:
         # read PILfont header
         if file.readline() != b"PILfont\n":
             msg = "Not a PILfont file"
@@ -118,7 +148,9 @@ class ImageFont:
 
         self.font = Image.core.font(image.im, data)
 
-    def getmask(self, text, mode="", *args, **kwargs):
+    def getmask(
+        self, text: str | bytes, mode: str = "", *args: Any, **kwargs: Any
+    ) -> Image.core.ImagingCore:
         """
         Create a bitmap for the text.
 
@@ -136,32 +168,36 @@ class ImageFont:
         :return: An internal PIL storage memory instance as defined by the
                  :py:mod:`PIL.Image.core` interface module.
         """
+        _string_length_check(text)
+        Image._decompression_bomb_check(self.font.getsize(text))
         return self.font.getmask(text, mode)
 
-    def getbbox(self, text, *args, **kwargs):
+    def getbbox(
+        self, text: str | bytes | bytearray, *args: Any, **kwargs: Any
+    ) -> tuple[int, int, int, int]:
         """
         Returns bounding box (in pixels) of given text.
 
         .. versionadded:: 9.2.0
 
         :param text: Text to render.
-        :param mode: Used by some graphics drivers to indicate what mode the
-                     driver prefers; if empty, the renderer may return either
-                     mode. Note that the mode is always a string, to simplify
-                     C-level implementations.
 
         :return: ``(left, top, right, bottom)`` bounding box
         """
+        _string_length_check(text)
         width, height = self.font.getsize(text)
         return 0, 0, width, height
 
-    def getlength(self, text, *args, **kwargs):
+    def getlength(
+        self, text: str | bytes | bytearray, *args: Any, **kwargs: Any
+    ) -> int:
         """
         Returns length (in pixels) of given text.
         This is the amount by which following text should be offset.
 
         .. versionadded:: 9.2.0
         """
+        _string_length_check(text)
         width, height = self.font.getsize(text)
         return width
 
@@ -174,14 +210,46 @@ class ImageFont:
 class FreeTypeFont:
     """FreeType font wrapper (requires _imagingft service)"""
 
-    def __init__(self, font=None, size=10, index=0, encoding="", layout_engine=None):
+    font: Font
+    font_bytes: bytes
+
+    def __init__(
+        self,
+        font: StrOrBytesPath | BinaryIO,
+        size: float = 10,
+        index: int = 0,
+        encoding: str = "",
+        layout_engine: Layout | None = None,
+    ) -> None:
         # FIXME: use service provider instead
 
+        if isinstance(core, DeferredError):
+            raise core.ex
+
+        if size <= 0:
+            msg = f"font size must be greater than 0, not {size}"
+            raise ValueError(msg)
+
         self.path = font
         self.size = size
         self.index = index
         self.encoding = encoding
 
+        try:
+            from packaging.version import parse as parse_version
+        except ImportError:
+            pass
+        else:
+            if freetype_version := features.version_module("freetype2"):
+                if parse_version(freetype_version) < parse_version("2.9.1"):
+                    warnings.warn(
+                        "Support for FreeType 2.9.0 is deprecated and will be removed "
+                        "in Pillow 12 (2025-10-15). Please upgrade to FreeType 2.9.1 "
+                        "or newer, preferably FreeType 2.10.4 which fixes "
+                        "CVE-2020-15999.",
+                        DeprecationWarning,
+                    )
+
         if layout_engine not in (Layout.BASIC, Layout.RAQM):
             layout_engine = Layout.BASIC
             if core.HAVE_RAQM:
@@ -195,13 +263,14 @@ class FreeTypeFont:
 
         self.layout_engine = layout_engine
 
-        def load_from_bytes(f):
+        def load_from_bytes(f: IO[bytes]) -> None:
             self.font_bytes = f.read()
             self.font = core.getfont(
                 "", size, index, encoding, self.font_bytes, layout_engine
             )
 
         if is_path(font):
+            font = os.fspath(font)
             if sys.platform == "win32":
                 font_bytes_path = font if isinstance(font, bytes) else font.encode()
                 try:
@@ -216,23 +285,23 @@ class FreeTypeFont:
                 font, size, index, encoding, layout_engine=layout_engine
             )
         else:
-            load_from_bytes(font)
+            load_from_bytes(cast(IO[bytes], font))
 
-    def __getstate__(self):
+    def __getstate__(self) -> list[Any]:
         return [self.path, self.size, self.index, self.encoding, self.layout_engine]
 
-    def __setstate__(self, state):
+    def __setstate__(self, state: list[Any]) -> None:
         path, size, index, encoding, layout_engine = state
-        self.__init__(path, size, index, encoding, layout_engine)
+        FreeTypeFont.__init__(self, path, size, index, encoding, layout_engine)
 
-    def getname(self):
+    def getname(self) -> tuple[str | None, str | None]:
         """
         :return: A tuple of the font family (e.g. Helvetica) and the font style
             (e.g. Bold)
         """
         return self.font.family, self.font.style
 
-    def getmetrics(self):
+    def getmetrics(self) -> tuple[int, int]:
         """
         :return: A tuple of the font ascent (the distance from the baseline to
             the highest outline point) and descent (the distance from the
@@ -240,7 +309,14 @@ class FreeTypeFont:
         """
         return self.font.ascent, self.font.descent
 
-    def getlength(self, text, mode="", direction=None, features=None, language=None):
+    def getlength(
+        self,
+        text: str | bytes,
+        mode: str = "",
+        direction: str | None = None,
+        features: list[str] | None = None,
+        language: str | None = None,
+    ) -> float:
         """
         Returns length (in pixels with 1/64 precision) of given text when rendered
         in font with provided direction, features, and language.
@@ -307,20 +383,21 @@ class FreeTypeFont:
                          <https://www.w3.org/International/articles/language-tags/>`_
                          Requires libraqm.
 
-        :return: Width for horizontal, height for vertical text.
+        :return: Either width for horizontal text, or height for vertical text.
         """
+        _string_length_check(text)
         return self.font.getlength(text, mode, direction, features, language) / 64
 
     def getbbox(
         self,
-        text,
-        mode="",
-        direction=None,
-        features=None,
-        language=None,
-        stroke_width=0,
-        anchor=None,
-    ):
+        text: str | bytes,
+        mode: str = "",
+        direction: str | None = None,
+        features: list[str] | None = None,
+        language: str | None = None,
+        stroke_width: float = 0,
+        anchor: str | None = None,
+    ) -> tuple[float, float, float, float]:
         """
         Returns bounding box (in pixels) of given text relative to given anchor
         when rendered in font with provided direction, features, and language.
@@ -363,11 +440,13 @@ class FreeTypeFont:
         :param stroke_width: The width of the text stroke.
 
         :param anchor:  The text anchor alignment. Determines the relative location of
-                        the anchor to the text. The default alignment is top left.
-                        See :ref:`text-anchors` for valid values.
+                        the anchor to the text. The default alignment is top left,
+                        specifically ``la`` for horizontal text and ``lt`` for
+                        vertical text. See :ref:`text-anchors` for details.
 
         :return: ``(left, top, right, bottom)`` bounding box
         """
+        _string_length_check(text)
         size, offset = self.font.getsize(
             text, mode, direction, features, language, anchor
         )
@@ -377,16 +456,16 @@ class FreeTypeFont:
 
     def getmask(
         self,
-        text,
-        mode="",
-        direction=None,
-        features=None,
-        language=None,
-        stroke_width=0,
-        anchor=None,
-        ink=0,
-        start=None,
-    ):
+        text: str | bytes,
+        mode: str = "",
+        direction: str | None = None,
+        features: list[str] | None = None,
+        language: str | None = None,
+        stroke_width: float = 0,
+        anchor: str | None = None,
+        ink: int = 0,
+        start: tuple[float, float] | None = None,
+    ) -> Image.core.ImagingCore:
         """
         Create a bitmap for the text.
 
@@ -436,8 +515,9 @@ class FreeTypeFont:
                          .. versionadded:: 6.2.0
 
         :param anchor:  The text anchor alignment. Determines the relative location of
-                        the anchor to the text. The default alignment is top left.
-                        See :ref:`text-anchors` for valid values.
+                        the anchor to the text. The default alignment is top left,
+                        specifically ``la`` for horizontal text and ``lt`` for
+                        vertical text. See :ref:`text-anchors` for details.
 
                          .. versionadded:: 8.0.0
 
@@ -467,18 +547,18 @@ class FreeTypeFont:
 
     def getmask2(
         self,
-        text,
-        mode="",
-        direction=None,
-        features=None,
-        language=None,
-        stroke_width=0,
-        anchor=None,
-        ink=0,
-        start=None,
-        *args,
-        **kwargs,
-    ):
+        text: str | bytes,
+        mode: str = "",
+        direction: str | None = None,
+        features: list[str] | None = None,
+        language: str | None = None,
+        stroke_width: float = 0,
+        anchor: str | None = None,
+        ink: int = 0,
+        start: tuple[float, float] | None = None,
+        *args: Any,
+        **kwargs: Any,
+    ) -> tuple[Image.core.ImagingCore, tuple[int, int]]:
         """
         Create a bitmap for the text.
 
@@ -528,8 +608,9 @@ class FreeTypeFont:
                          .. versionadded:: 6.2.0
 
         :param anchor:  The text anchor alignment. Determines the relative location of
-                        the anchor to the text. The default alignment is top left.
-                        See :ref:`text-anchors` for valid values.
+                        the anchor to the text. The default alignment is top left,
+                        specifically ``la`` for horizontal text and ``lt`` for
+                        vertical text. See :ref:`text-anchors` for details.
 
                          .. versionadded:: 8.0.0
 
@@ -546,11 +627,18 @@ class FreeTypeFont:
                  :py:mod:`PIL.Image.core` interface module, and the text offset, the
                  gap between the starting coordinate and the first marking
         """
+        _string_length_check(text)
         if start is None:
             start = (0, 0)
-        im, size, offset = self.font.render(
+
+        def fill(width: int, height: int) -> Image.core.ImagingCore:
+            size = (width, height)
+            Image._decompression_bomb_check(size)
+            return Image.core.fill("RGBA" if mode == "RGBA" else "L", size)
+
+        return self.font.render(
             text,
-            Image.core.fill,
+            fill,
             mode,
             direction,
             features,
@@ -560,14 +648,16 @@ class FreeTypeFont:
             ink,
             start[0],
             start[1],
-            Image.MAX_IMAGE_PIXELS,
         )
-        Image._decompression_bomb_check(size)
-        return im, offset
 
     def font_variant(
-        self, font=None, size=None, index=None, encoding=None, layout_engine=None
-    ):
+        self,
+        font: StrOrBytesPath | BinaryIO | None = None,
+        size: float | None = None,
+        index: int | None = None,
+        encoding: str | None = None,
+        layout_engine: Layout | None = None,
+    ) -> FreeTypeFont:
         """
         Create a copy of this FreeTypeFont object,
         using any specified arguments to override the settings.
@@ -590,7 +680,7 @@ class FreeTypeFont:
             layout_engine=layout_engine or self.layout_engine,
         )
 
-    def get_variation_names(self):
+    def get_variation_names(self) -> list[bytes]:
         """
         :returns: A list of the named styles in a variation font.
         :exception OSError: If the font is not a variation font.
@@ -602,7 +692,7 @@ class FreeTypeFont:
             raise NotImplementedError(msg) from e
         return [name.replace(b"\x00", b"") for name in names]
 
-    def set_variation_by_name(self, name):
+    def set_variation_by_name(self, name: str | bytes) -> None:
         """
         :param name: The name of the style.
         :exception OSError: If the font is not a variation font.
@@ -621,7 +711,7 @@ class FreeTypeFont:
 
         self.font.setvarname(index)
 
-    def get_variation_axes(self):
+    def get_variation_axes(self) -> list[Axis]:
         """
         :returns: A list of the axes in a variation font.
         :exception OSError: If the font is not a variation font.
@@ -632,10 +722,11 @@ class FreeTypeFont:
             msg = "FreeType 2.9.1 or greater is required"
             raise NotImplementedError(msg) from e
         for axis in axes:
-            axis["name"] = axis["name"].replace(b"\x00", b"")
+            if axis["name"]:
+                axis["name"] = axis["name"].replace(b"\x00", b"")
         return axes
 
-    def set_variation_by_axes(self, axes):
+    def set_variation_by_axes(self, axes: list[float]) -> None:
         """
         :param axes: A list of values for each axis.
         :exception OSError: If the font is not a variation font.
@@ -650,7 +741,9 @@ class FreeTypeFont:
 class TransposedFont:
     """Wrapper for writing rotated or mirrored text"""
 
-    def __init__(self, font, orientation=None):
+    def __init__(
+        self, font: ImageFont | FreeTypeFont, orientation: Image.Transpose | None = None
+    ):
         """
         Wrapper that creates a transposed font from any existing font
         object.
@@ -664,13 +757,17 @@ class TransposedFont:
         self.font = font
         self.orientation = orientation  # any 'transpose' argument, or None
 
-    def getmask(self, text, mode="", *args, **kwargs):
+    def getmask(
+        self, text: str | bytes, mode: str = "", *args: Any, **kwargs: Any
+    ) -> Image.core.ImagingCore:
         im = self.font.getmask(text, mode, *args, **kwargs)
         if self.orientation is not None:
             return im.transpose(self.orientation)
         return im
 
-    def getbbox(self, text, *args, **kwargs):
+    def getbbox(
+        self, text: str | bytes, *args: Any, **kwargs: Any
+    ) -> tuple[int, int, float, float]:
         # TransposedFont doesn't support getmask2, move top-left point to (0, 0)
         # this has no effect on ImageFont and simulates anchor="lt" for FreeTypeFont
         left, top, right, bottom = self.font.getbbox(text, *args, **kwargs)
@@ -680,17 +777,18 @@ class TransposedFont:
             return 0, 0, height, width
         return 0, 0, width, height
 
-    def getlength(self, text, *args, **kwargs):
+    def getlength(self, text: str | bytes, *args: Any, **kwargs: Any) -> float:
         if self.orientation in (Image.Transpose.ROTATE_90, Image.Transpose.ROTATE_270):
             msg = "text length is undefined for text rotated by 90 or 270 degrees"
             raise ValueError(msg)
         return self.font.getlength(text, *args, **kwargs)
 
 
-def load(filename):
+def load(filename: str) -> ImageFont:
     """
-    Load a font file.  This function loads a font object from the given
-    bitmap font file, and returns the corresponding font object.
+    Load a font file. This function loads a font object from the given
+    bitmap font file, and returns the corresponding font object. For loading TrueType
+    or OpenType fonts instead, see :py:func:`~PIL.ImageFont.truetype`.
 
     :param filename: Name of font file.
     :return: A font object.
@@ -701,12 +799,19 @@ def load(filename):
     return f
 
 
-def truetype(font=None, size=10, index=0, encoding="", layout_engine=None):
+def truetype(
+    font: StrOrBytesPath | BinaryIO,
+    size: float = 10,
+    index: int = 0,
+    encoding: str = "",
+    layout_engine: Layout | None = None,
+) -> FreeTypeFont:
     """
     Load a TrueType or OpenType font from a file or file-like object,
-    and create a font object.
-    This function loads a font object from the given file or file-like
-    object, and creates a font object for a font of the given size.
+    and create a font object. This function loads a font object from the given
+    file or file-like object, and creates a font object for a font of the given
+    size. For loading bitmap fonts instead, see :py:func:`~PIL.ImageFont.load`
+    and :py:func:`~PIL.ImageFont.load_path`.
 
     Pillow uses FreeType to open font files. On Windows, be aware that FreeType
     will keep the file open as long as the FreeTypeFont object exists. Windows
@@ -719,10 +824,15 @@ def truetype(font=None, size=10, index=0, encoding="", layout_engine=None):
 
     :param font: A filename or file-like object containing a TrueType font.
                  If the file is not found in this filename, the loader may also
-                 search in other directories, such as the :file:`fonts/`
-                 directory on Windows or :file:`/Library/Fonts/`,
-                 :file:`/System/Library/Fonts/` and :file:`~/Library/Fonts/` on
-                 macOS.
+                 search in other directories, such as:
+
+                 * The :file:`fonts/` directory on Windows,
+                 * :file:`/Library/Fonts/`, :file:`/System/Library/Fonts/`
+                   and :file:`~/Library/Fonts/` on macOS.
+                 * :file:`~/.local/share/fonts`, :file:`/usr/local/share/fonts`,
+                   and :file:`/usr/share/fonts` on Linux; or those specified by
+                   the ``XDG_DATA_HOME`` and ``XDG_DATA_DIRS`` environment variables
+                   for user-installed and system-wide fonts, respectively.
 
     :param size: The requested size, in pixels.
     :param index: Which font face to load (default is first available face).
@@ -746,7 +856,7 @@ def truetype(font=None, size=10, index=0, encoding="", layout_engine=None):
                      This specifies the character set to use. It does not alter the
                      encoding of any text provided in subsequent operations.
     :param layout_engine: Which layout engine to use, if available:
-                     :data:`.ImageFont.Layout.BASIC` or :data:`.ImageFont.Layout.RAQM`.
+                     :attr:`.ImageFont.Layout.BASIC` or :attr:`.ImageFont.Layout.RAQM`.
                      If it is available, Raqm layout will be used by default.
                      Otherwise, basic layout will be used.
 
@@ -759,9 +869,10 @@ def truetype(font=None, size=10, index=0, encoding="", layout_engine=None):
                      .. versionadded:: 4.2.0
     :return: A font object.
     :exception OSError: If the file could not be read.
+    :exception ValueError: If the font size is not greater than zero.
     """
 
-    def freetype(font):
+    def freetype(font: StrOrBytesPath | BinaryIO) -> FreeTypeFont:
         return FreeTypeFont(font, size, index, encoding, layout_engine)
 
     try:
@@ -780,12 +891,21 @@ def truetype(font=None, size=10, index=0, encoding="", layout_engine=None):
             if windir:
                 dirs.append(os.path.join(windir, "fonts"))
         elif sys.platform in ("linux", "linux2"):
-            lindirs = os.environ.get("XDG_DATA_DIRS")
-            if not lindirs:
-                # According to the freedesktop spec, XDG_DATA_DIRS should
-                # default to /usr/share
-                lindirs = "/usr/share"
-            dirs += [os.path.join(lindir, "fonts") for lindir in lindirs.split(":")]
+            data_home = os.environ.get("XDG_DATA_HOME")
+            if not data_home:
+                # The freedesktop spec defines the following default directory for
+                # when XDG_DATA_HOME is unset or empty. This user-level directory
+                # takes precedence over system-level directories.
+                data_home = os.path.expanduser("~/.local/share")
+            xdg_dirs = [data_home]
+
+            data_dirs = os.environ.get("XDG_DATA_DIRS")
+            if not data_dirs:
+                # Similarly, defaults are defined for the system-level directories
+                data_dirs = "/usr/local/share:/usr/share"
+            xdg_dirs += data_dirs.split(":")
+
+            dirs += [os.path.join(xdg_dir, "fonts") for xdg_dir in xdg_dirs]
         elif sys.platform == "darwin":
             dirs += [
                 "/Library/Fonts",
@@ -811,7 +931,7 @@ def truetype(font=None, size=10, index=0, encoding="", layout_engine=None):
         raise
 
 
-def load_path(filename):
+def load_path(filename: str | bytes) -> ImageFont:
     """
     Load font file. Same as :py:func:`~PIL.ImageFont.load`, but searches for a
     bitmap font along the Python path.
@@ -820,25 +940,21 @@ def load_path(filename):
     :return: A font object.
     :exception OSError: If the file could not be read.
     """
+    if not isinstance(filename, str):
+        filename = filename.decode("utf-8")
     for directory in sys.path:
-        if is_directory(directory):
-            if not isinstance(filename, str):
-                filename = filename.decode("utf-8")
-            try:
-                return load(os.path.join(directory, filename))
-            except OSError:
-                pass
-    msg = "cannot find font file"
+        try:
+            return load(os.path.join(directory, filename))
+        except OSError:
+            pass
+    msg = f'cannot find font file "{filename}" in sys.path'
+    if os.path.exists(filename):
+        msg += f', did you mean ImageFont.load("{filename}") instead?'
+
     raise OSError(msg)
 
 
-def load_default():
-    """Load a "better than nothing" default font.
-
-    .. versionadded:: 1.1.4
-
-    :return: A font object.
-    """
+def load_default_imagefont() -> ImageFont:
     f = ImageFont()
     f._load_pilfont_data(
         # courB08
@@ -972,3 +1088,251 @@ w7IkEbzhVQAAAABJRU5ErkJggg==
         ),
     )
     return f
+
+
+def load_default(size: float | None = None) -> FreeTypeFont | ImageFont:
+    """If FreeType support is available, load a version of Aileron Regular,
+    https://dotcolon.net/font/aileron, with a more limited character set.
+
+    Otherwise, load a "better than nothing" font.
+
+    .. versionadded:: 1.1.4
+
+    :param size: The font size of Aileron Regular.
+
+        .. versionadded:: 10.1.0
+
+    :return: A font object.
+    """
+    if isinstance(core, ModuleType) or size is not None:
+        return truetype(
+            BytesIO(
+                base64.b64decode(
+                    b"""
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+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD/w//C/9MAAP/SAAD/9wAAAAAAAA
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+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD/9wAAAAD//QAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAP/2AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
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+AAABwAAAAAAAAAAAAAAFQAFAAAAAAAYABgAAAAUAAAACgAAAAwAAgAPABEAFgAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFAAEAEQBdAAYAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAcAAAAAAAAABwAAAAAACAAAAAAAAAAAAAcAAAAHAAAAEwAJ
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+AAAAAAQAAAADa3tfFAAAAANAan9kAAAAA4QodoQ==
+"""
+                )
+            ),
+            10 if size is None else size,
+            layout_engine=Layout.BASIC,
+        )
+    return load_default_imagefont()
diff --git a/src/PIL/ImageGrab.py b/src/PIL/ImageGrab.py
index 927033c60..e27ca7e50 100644
--- a/src/PIL/ImageGrab.py
+++ b/src/PIL/ImageGrab.py
@@ -14,6 +14,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import io
 import os
@@ -25,7 +26,13 @@ import tempfile
 from . import Image
 
 
-def grab(bbox=None, include_layered_windows=False, all_screens=False, xdisplay=None):
+def grab(
+    bbox: tuple[int, int, int, int] | None = None,
+    include_layered_windows: bool = False,
+    all_screens: bool = False,
+    xdisplay: str | None = None,
+) -> Image.Image:
+    im: Image.Image
     if xdisplay is None:
         if sys.platform == "darwin":
             fh, filepath = tempfile.mkstemp(".png")
@@ -62,14 +69,16 @@ def grab(bbox=None, include_layered_windows=False, all_screens=False, xdisplay=N
                 left, top, right, bottom = bbox
                 im = im.crop((left - x0, top - y0, right - x0, bottom - y0))
             return im
+    # Cast to Optional[str] needed for Windows and macOS.
+    display_name: str | None = xdisplay
     try:
         if not Image.core.HAVE_XCB:
             msg = "Pillow was built without XCB support"
             raise OSError(msg)
-        size, data = Image.core.grabscreen_x11(xdisplay)
+        size, data = Image.core.grabscreen_x11(display_name)
     except OSError:
         if (
-            xdisplay is None
+            display_name is None
             and sys.platform not in ("darwin", "win32")
             and shutil.which("gnome-screenshot")
         ):
@@ -93,7 +102,7 @@ def grab(bbox=None, include_layered_windows=False, all_screens=False, xdisplay=N
         return im
 
 
-def grabclipboard():
+def grabclipboard() -> Image.Image | list[str] | None:
     if sys.platform == "darwin":
         fh, filepath = tempfile.mkstemp(".png")
         os.close(fh)
@@ -140,29 +149,45 @@ def grabclipboard():
                 return BmpImagePlugin.DibImageFile(data)
         return None
     else:
-        if shutil.which("wl-paste"):
-            output = subprocess.check_output(["wl-paste", "-l"]).decode()
-            mimetypes = output.splitlines()
-            if "image/png" in mimetypes:
-                mimetype = "image/png"
-            elif mimetypes:
-                mimetype = mimetypes[0]
-            else:
-                mimetype = None
+        if os.getenv("WAYLAND_DISPLAY"):
+            session_type = "wayland"
+        elif os.getenv("DISPLAY"):
+            session_type = "x11"
+        else:  # Session type check failed
+            session_type = None
 
-            args = ["wl-paste"]
-            if mimetype:
-                args.extend(["-t", mimetype])
-        elif shutil.which("xclip"):
+        if shutil.which("wl-paste") and session_type in ("wayland", None):
+            args = ["wl-paste", "-t", "image"]
+        elif shutil.which("xclip") and session_type in ("x11", None):
             args = ["xclip", "-selection", "clipboard", "-t", "image/png", "-o"]
         else:
             msg = "wl-paste or xclip is required for ImageGrab.grabclipboard() on Linux"
             raise NotImplementedError(msg)
-        p = subprocess.run(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-        err = p.stderr
-        if err:
-            msg = f"{args[0]} error: {err.strip().decode()}"
+
+        p = subprocess.run(args, capture_output=True)
+        if p.returncode != 0:
+            err = p.stderr
+            for silent_error in [
+                # wl-paste, when the clipboard is empty
+                b"Nothing is copied",
+                # Ubuntu/Debian wl-paste, when the clipboard is empty
+                b"No selection",
+                # Ubuntu/Debian wl-paste, when an image isn't available
+                b"No suitable type of content copied",
+                # wl-paste or Ubuntu/Debian xclip, when an image isn't available
+                b" not available",
+                # xclip, when an image isn't available
+                b"cannot convert ",
+                # xclip, when the clipboard isn't initialized
+                b"xclip: Error: There is no owner for the ",
+            ]:
+                if silent_error in err:
+                    return None
+            msg = f"{args[0]} error"
+            if err:
+                msg += f": {err.strip().decode()}"
             raise ChildProcessError(msg)
+
         data = io.BytesIO(p.stdout)
         im = Image.open(data)
         im.load()
diff --git a/src/PIL/ImageMath.py b/src/PIL/ImageMath.py
index ac7d36b69..484797f91 100644
--- a/src/PIL/ImageMath.py
+++ b/src/PIL/ImageMath.py
@@ -14,23 +14,23 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import builtins
+from types import CodeType
+from typing import Any, Callable
 
 from . import Image, _imagingmath
-
-
-def _isconstant(v):
-    return isinstance(v, (int, float))
+from ._deprecate import deprecate
 
 
 class _Operand:
     """Wraps an image operand, providing standard operators"""
 
-    def __init__(self, im):
+    def __init__(self, im: Image.Image):
         self.im = im
 
-    def __fixup(self, im1):
+    def __fixup(self, im1: _Operand | float) -> Image.Image:
         # convert image to suitable mode
         if isinstance(im1, _Operand):
             # argument was an image.
@@ -43,211 +43,287 @@ class _Operand:
                 raise ValueError(msg)
         else:
             # argument was a constant
-            if _isconstant(im1) and self.im.mode in ("1", "L", "I"):
+            if isinstance(im1, (int, float)) and self.im.mode in ("1", "L", "I"):
                 return Image.new("I", self.im.size, im1)
             else:
                 return Image.new("F", self.im.size, im1)
 
-    def apply(self, op, im1, im2=None, mode=None):
-        im1 = self.__fixup(im1)
+    def apply(
+        self,
+        op: str,
+        im1: _Operand | float,
+        im2: _Operand | float | None = None,
+        mode: str | None = None,
+    ) -> _Operand:
+        im_1 = self.__fixup(im1)
         if im2 is None:
             # unary operation
-            out = Image.new(mode or im1.mode, im1.size, None)
-            im1.load()
+            out = Image.new(mode or im_1.mode, im_1.size, None)
             try:
-                op = getattr(_imagingmath, op + "_" + im1.mode)
+                op = getattr(_imagingmath, f"{op}_{im_1.mode}")
             except AttributeError as e:
                 msg = f"bad operand type for '{op}'"
                 raise TypeError(msg) from e
-            _imagingmath.unop(op, out.im.id, im1.im.id)
+            _imagingmath.unop(op, out.getim(), im_1.getim())
         else:
             # binary operation
-            im2 = self.__fixup(im2)
-            if im1.mode != im2.mode:
+            im_2 = self.__fixup(im2)
+            if im_1.mode != im_2.mode:
                 # convert both arguments to floating point
-                if im1.mode != "F":
-                    im1 = im1.convert("F")
-                if im2.mode != "F":
-                    im2 = im2.convert("F")
-            if im1.size != im2.size:
+                if im_1.mode != "F":
+                    im_1 = im_1.convert("F")
+                if im_2.mode != "F":
+                    im_2 = im_2.convert("F")
+            if im_1.size != im_2.size:
                 # crop both arguments to a common size
-                size = (min(im1.size[0], im2.size[0]), min(im1.size[1], im2.size[1]))
-                if im1.size != size:
-                    im1 = im1.crop((0, 0) + size)
-                if im2.size != size:
-                    im2 = im2.crop((0, 0) + size)
-            out = Image.new(mode or im1.mode, im1.size, None)
-            im1.load()
-            im2.load()
+                size = (
+                    min(im_1.size[0], im_2.size[0]),
+                    min(im_1.size[1], im_2.size[1]),
+                )
+                if im_1.size != size:
+                    im_1 = im_1.crop((0, 0) + size)
+                if im_2.size != size:
+                    im_2 = im_2.crop((0, 0) + size)
+            out = Image.new(mode or im_1.mode, im_1.size, None)
             try:
-                op = getattr(_imagingmath, op + "_" + im1.mode)
+                op = getattr(_imagingmath, f"{op}_{im_1.mode}")
             except AttributeError as e:
                 msg = f"bad operand type for '{op}'"
                 raise TypeError(msg) from e
-            _imagingmath.binop(op, out.im.id, im1.im.id, im2.im.id)
+            _imagingmath.binop(op, out.getim(), im_1.getim(), im_2.getim())
         return _Operand(out)
 
     # unary operators
-    def __bool__(self):
+    def __bool__(self) -> bool:
         # an image is "true" if it contains at least one non-zero pixel
         return self.im.getbbox() is not None
 
-    def __abs__(self):
+    def __abs__(self) -> _Operand:
         return self.apply("abs", self)
 
-    def __pos__(self):
+    def __pos__(self) -> _Operand:
         return self
 
-    def __neg__(self):
+    def __neg__(self) -> _Operand:
         return self.apply("neg", self)
 
     # binary operators
-    def __add__(self, other):
+    def __add__(self, other: _Operand | float) -> _Operand:
         return self.apply("add", self, other)
 
-    def __radd__(self, other):
+    def __radd__(self, other: _Operand | float) -> _Operand:
         return self.apply("add", other, self)
 
-    def __sub__(self, other):
+    def __sub__(self, other: _Operand | float) -> _Operand:
         return self.apply("sub", self, other)
 
-    def __rsub__(self, other):
+    def __rsub__(self, other: _Operand | float) -> _Operand:
         return self.apply("sub", other, self)
 
-    def __mul__(self, other):
+    def __mul__(self, other: _Operand | float) -> _Operand:
         return self.apply("mul", self, other)
 
-    def __rmul__(self, other):
+    def __rmul__(self, other: _Operand | float) -> _Operand:
         return self.apply("mul", other, self)
 
-    def __truediv__(self, other):
+    def __truediv__(self, other: _Operand | float) -> _Operand:
         return self.apply("div", self, other)
 
-    def __rtruediv__(self, other):
+    def __rtruediv__(self, other: _Operand | float) -> _Operand:
         return self.apply("div", other, self)
 
-    def __mod__(self, other):
+    def __mod__(self, other: _Operand | float) -> _Operand:
         return self.apply("mod", self, other)
 
-    def __rmod__(self, other):
+    def __rmod__(self, other: _Operand | float) -> _Operand:
         return self.apply("mod", other, self)
 
-    def __pow__(self, other):
+    def __pow__(self, other: _Operand | float) -> _Operand:
         return self.apply("pow", self, other)
 
-    def __rpow__(self, other):
+    def __rpow__(self, other: _Operand | float) -> _Operand:
         return self.apply("pow", other, self)
 
     # bitwise
-    def __invert__(self):
+    def __invert__(self) -> _Operand:
         return self.apply("invert", self)
 
-    def __and__(self, other):
+    def __and__(self, other: _Operand | float) -> _Operand:
         return self.apply("and", self, other)
 
-    def __rand__(self, other):
+    def __rand__(self, other: _Operand | float) -> _Operand:
         return self.apply("and", other, self)
 
-    def __or__(self, other):
+    def __or__(self, other: _Operand | float) -> _Operand:
         return self.apply("or", self, other)
 
-    def __ror__(self, other):
+    def __ror__(self, other: _Operand | float) -> _Operand:
         return self.apply("or", other, self)
 
-    def __xor__(self, other):
+    def __xor__(self, other: _Operand | float) -> _Operand:
         return self.apply("xor", self, other)
 
-    def __rxor__(self, other):
+    def __rxor__(self, other: _Operand | float) -> _Operand:
         return self.apply("xor", other, self)
 
-    def __lshift__(self, other):
+    def __lshift__(self, other: _Operand | float) -> _Operand:
         return self.apply("lshift", self, other)
 
-    def __rshift__(self, other):
+    def __rshift__(self, other: _Operand | float) -> _Operand:
         return self.apply("rshift", self, other)
 
     # logical
-    def __eq__(self, other):
+    def __eq__(self, other: _Operand | float) -> _Operand:  # type: ignore[override]
         return self.apply("eq", self, other)
 
-    def __ne__(self, other):
+    def __ne__(self, other: _Operand | float) -> _Operand:  # type: ignore[override]
         return self.apply("ne", self, other)
 
-    def __lt__(self, other):
+    def __lt__(self, other: _Operand | float) -> _Operand:
         return self.apply("lt", self, other)
 
-    def __le__(self, other):
+    def __le__(self, other: _Operand | float) -> _Operand:
         return self.apply("le", self, other)
 
-    def __gt__(self, other):
+    def __gt__(self, other: _Operand | float) -> _Operand:
         return self.apply("gt", self, other)
 
-    def __ge__(self, other):
+    def __ge__(self, other: _Operand | float) -> _Operand:
         return self.apply("ge", self, other)
 
 
 # conversions
-def imagemath_int(self):
+def imagemath_int(self: _Operand) -> _Operand:
     return _Operand(self.im.convert("I"))
 
 
-def imagemath_float(self):
+def imagemath_float(self: _Operand) -> _Operand:
     return _Operand(self.im.convert("F"))
 
 
 # logical
-def imagemath_equal(self, other):
+def imagemath_equal(self: _Operand, other: _Operand | float | None) -> _Operand:
     return self.apply("eq", self, other, mode="I")
 
 
-def imagemath_notequal(self, other):
+def imagemath_notequal(self: _Operand, other: _Operand | float | None) -> _Operand:
     return self.apply("ne", self, other, mode="I")
 
 
-def imagemath_min(self, other):
+def imagemath_min(self: _Operand, other: _Operand | float | None) -> _Operand:
     return self.apply("min", self, other)
 
 
-def imagemath_max(self, other):
+def imagemath_max(self: _Operand, other: _Operand | float | None) -> _Operand:
     return self.apply("max", self, other)
 
 
-def imagemath_convert(self, mode):
+def imagemath_convert(self: _Operand, mode: str) -> _Operand:
     return _Operand(self.im.convert(mode))
 
 
-ops = {}
-for k, v in list(globals().items()):
-    if k[:10] == "imagemath_":
-        ops[k[10:]] = v
+ops = {
+    "int": imagemath_int,
+    "float": imagemath_float,
+    "equal": imagemath_equal,
+    "notequal": imagemath_notequal,
+    "min": imagemath_min,
+    "max": imagemath_max,
+    "convert": imagemath_convert,
+}
 
 
-def eval(expression, _dict={}, **kw):
+def lambda_eval(
+    expression: Callable[[dict[str, Any]], Any],
+    options: dict[str, Any] = {},
+    **kw: Any,
+) -> Any:
     """
-    Evaluates an image expression.
+    Returns the result of an image function.
+
+    :py:mod:`~PIL.ImageMath` only supports single-layer images. To process multi-band
+    images, use the :py:meth:`~PIL.Image.Image.split` method or
+    :py:func:`~PIL.Image.merge` function.
+
+    :param expression: A function that receives a dictionary.
+    :param options: Values to add to the function's dictionary. Deprecated.
+                    You can instead use one or more keyword arguments.
+    :param **kw: Values to add to the function's dictionary.
+    :return: The expression result. This is usually an image object, but can
+             also be an integer, a floating point value, or a pixel tuple,
+             depending on the expression.
+    """
+
+    if options:
+        deprecate(
+            "ImageMath.lambda_eval options",
+            12,
+            "ImageMath.lambda_eval keyword arguments",
+        )
+
+    args: dict[str, Any] = ops.copy()
+    args.update(options)
+    args.update(kw)
+    for k, v in args.items():
+        if isinstance(v, Image.Image):
+            args[k] = _Operand(v)
+
+    out = expression(args)
+    try:
+        return out.im
+    except AttributeError:
+        return out
+
+
+def unsafe_eval(
+    expression: str,
+    options: dict[str, Any] = {},
+    **kw: Any,
+) -> Any:
+    """
+    Evaluates an image expression. This uses Python's ``eval()`` function to process
+    the expression string, and carries the security risks of doing so. It is not
+    recommended to process expressions without considering this.
+    :py:meth:`~lambda_eval` is a more secure alternative.
+
+    :py:mod:`~PIL.ImageMath` only supports single-layer images. To process multi-band
+    images, use the :py:meth:`~PIL.Image.Image.split` method or
+    :py:func:`~PIL.Image.merge` function.
 
     :param expression: A string containing a Python-style expression.
-    :param options: Values to add to the evaluation context.  You
-                    can either use a dictionary, or one or more keyword
-                    arguments.
+    :param options: Values to add to the evaluation context. Deprecated.
+                    You can instead use one or more keyword arguments.
+    :param **kw: Values to add to the evaluation context.
     :return: The evaluated expression. This is usually an image object, but can
              also be an integer, a floating point value, or a pixel tuple,
              depending on the expression.
     """
 
+    if options:
+        deprecate(
+            "ImageMath.unsafe_eval options",
+            12,
+            "ImageMath.unsafe_eval keyword arguments",
+        )
+
     # build execution namespace
-    args = ops.copy()
-    args.update(_dict)
+    args: dict[str, Any] = ops.copy()
+    for k in list(options.keys()) + list(kw.keys()):
+        if "__" in k or hasattr(builtins, k):
+            msg = f"'{k}' not allowed"
+            raise ValueError(msg)
+
+    args.update(options)
     args.update(kw)
-    for k, v in list(args.items()):
-        if hasattr(v, "im"):
+    for k, v in args.items():
+        if isinstance(v, Image.Image):
             args[k] = _Operand(v)
 
     compiled_code = compile(expression, "<string>", "eval")
 
-    def scan(code):
+    def scan(code: CodeType) -> None:
         for const in code.co_consts:
-            if type(const) == type(compiled_code):
+            if type(const) is type(compiled_code):
                 scan(const)
 
         for name in code.co_names:
@@ -261,3 +337,32 @@ def eval(expression, _dict={}, **kw):
         return out.im
     except AttributeError:
         return out
+
+
+def eval(
+    expression: str,
+    _dict: dict[str, Any] = {},
+    **kw: Any,
+) -> Any:
+    """
+    Evaluates an image expression.
+
+    Deprecated. Use lambda_eval() or unsafe_eval() instead.
+
+    :param expression: A string containing a Python-style expression.
+    :param _dict: Values to add to the evaluation context.  You
+                  can either use a dictionary, or one or more keyword
+                  arguments.
+    :return: The evaluated expression. This is usually an image object, but can
+             also be an integer, a floating point value, or a pixel tuple,
+             depending on the expression.
+
+    ..  deprecated:: 10.3.0
+    """
+
+    deprecate(
+        "ImageMath.eval",
+        12,
+        "ImageMath.lambda_eval or ImageMath.unsafe_eval",
+    )
+    return unsafe_eval(expression, _dict, **kw)
diff --git a/src/PIL/ImageMode.py b/src/PIL/ImageMode.py
index a0b335142..92a08d2cb 100644
--- a/src/PIL/ImageMode.py
+++ b/src/PIL/ImageMode.py
@@ -12,79 +12,81 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import sys
+from functools import lru_cache
+from typing import NamedTuple
 
-# mode descriptor cache
-_modes = None
+from ._deprecate import deprecate
 
 
-class ModeDescriptor:
+class ModeDescriptor(NamedTuple):
     """Wrapper for mode strings."""
 
-    def __init__(self, mode, bands, basemode, basetype, typestr):
-        self.mode = mode
-        self.bands = bands
-        self.basemode = basemode
-        self.basetype = basetype
-        self.typestr = typestr
+    mode: str
+    bands: tuple[str, ...]
+    basemode: str
+    basetype: str
+    typestr: str
 
-    def __str__(self):
+    def __str__(self) -> str:
         return self.mode
 
 
-def getmode(mode):
+@lru_cache
+def getmode(mode: str) -> ModeDescriptor:
     """Gets a mode descriptor for the given mode."""
-    global _modes
-    if not _modes:
-        # initialize mode cache
-        modes = {}
-        endian = "<" if sys.byteorder == "little" else ">"
-        for m, (basemode, basetype, bands, typestr) in {
-            # core modes
-            # Bits need to be extended to bytes
-            "1": ("L", "L", ("1",), "|b1"),
-            "L": ("L", "L", ("L",), "|u1"),
-            "I": ("L", "I", ("I",), endian + "i4"),
-            "F": ("L", "F", ("F",), endian + "f4"),
-            "P": ("P", "L", ("P",), "|u1"),
-            "RGB": ("RGB", "L", ("R", "G", "B"), "|u1"),
-            "RGBX": ("RGB", "L", ("R", "G", "B", "X"), "|u1"),
-            "RGBA": ("RGB", "L", ("R", "G", "B", "A"), "|u1"),
-            "CMYK": ("RGB", "L", ("C", "M", "Y", "K"), "|u1"),
-            "YCbCr": ("RGB", "L", ("Y", "Cb", "Cr"), "|u1"),
-            # UNDONE - unsigned |u1i1i1
-            "LAB": ("RGB", "L", ("L", "A", "B"), "|u1"),
-            "HSV": ("RGB", "L", ("H", "S", "V"), "|u1"),
-            # extra experimental modes
-            "RGBa": ("RGB", "L", ("R", "G", "B", "a"), "|u1"),
-            "BGR;15": ("RGB", "L", ("B", "G", "R"), "|u1"),
-            "BGR;16": ("RGB", "L", ("B", "G", "R"), "|u1"),
-            "BGR;24": ("RGB", "L", ("B", "G", "R"), "|u1"),
-            "LA": ("L", "L", ("L", "A"), "|u1"),
-            "La": ("L", "L", ("L", "a"), "|u1"),
-            "PA": ("RGB", "L", ("P", "A"), "|u1"),
-        }.items():
-            modes[m] = ModeDescriptor(m, bands, basemode, basetype, typestr)
-        # mapping modes
-        for i16mode, typestr in {
-            # I;16 == I;16L, and I;32 == I;32L
-            "I;16": "<u2",
-            "I;16S": "<i2",
-            "I;16L": "<u2",
-            "I;16LS": "<i2",
-            "I;16B": ">u2",
-            "I;16BS": ">i2",
-            "I;16N": endian + "u2",
-            "I;16NS": endian + "i2",
-            "I;32": "<u4",
-            "I;32B": ">u4",
-            "I;32L": "<u4",
-            "I;32S": "<i4",
-            "I;32BS": ">i4",
-            "I;32LS": "<i4",
-        }.items():
-            modes[i16mode] = ModeDescriptor(i16mode, ("I",), "L", "L", typestr)
-        # set global mode cache atomically
-        _modes = modes
-    return _modes[mode]
+    endian = "<" if sys.byteorder == "little" else ">"
+
+    modes = {
+        # core modes
+        # Bits need to be extended to bytes
+        "1": ("L", "L", ("1",), "|b1"),
+        "L": ("L", "L", ("L",), "|u1"),
+        "I": ("L", "I", ("I",), f"{endian}i4"),
+        "F": ("L", "F", ("F",), f"{endian}f4"),
+        "P": ("P", "L", ("P",), "|u1"),
+        "RGB": ("RGB", "L", ("R", "G", "B"), "|u1"),
+        "RGBX": ("RGB", "L", ("R", "G", "B", "X"), "|u1"),
+        "RGBA": ("RGB", "L", ("R", "G", "B", "A"), "|u1"),
+        "CMYK": ("RGB", "L", ("C", "M", "Y", "K"), "|u1"),
+        "YCbCr": ("RGB", "L", ("Y", "Cb", "Cr"), "|u1"),
+        # UNDONE - unsigned |u1i1i1
+        "LAB": ("RGB", "L", ("L", "A", "B"), "|u1"),
+        "HSV": ("RGB", "L", ("H", "S", "V"), "|u1"),
+        # extra experimental modes
+        "RGBa": ("RGB", "L", ("R", "G", "B", "a"), "|u1"),
+        "BGR;15": ("RGB", "L", ("B", "G", "R"), "|u1"),
+        "BGR;16": ("RGB", "L", ("B", "G", "R"), "|u1"),
+        "BGR;24": ("RGB", "L", ("B", "G", "R"), "|u1"),
+        "LA": ("L", "L", ("L", "A"), "|u1"),
+        "La": ("L", "L", ("L", "a"), "|u1"),
+        "PA": ("RGB", "L", ("P", "A"), "|u1"),
+    }
+    if mode in modes:
+        if mode in ("BGR;15", "BGR;16", "BGR;24"):
+            deprecate(mode, 12)
+        base_mode, base_type, bands, type_str = modes[mode]
+        return ModeDescriptor(mode, bands, base_mode, base_type, type_str)
+
+    mapping_modes = {
+        # I;16 == I;16L, and I;32 == I;32L
+        "I;16": "<u2",
+        "I;16S": "<i2",
+        "I;16L": "<u2",
+        "I;16LS": "<i2",
+        "I;16B": ">u2",
+        "I;16BS": ">i2",
+        "I;16N": f"{endian}u2",
+        "I;16NS": f"{endian}i2",
+        "I;32": "<u4",
+        "I;32B": ">u4",
+        "I;32L": "<u4",
+        "I;32S": "<i4",
+        "I;32BS": ">i4",
+        "I;32LS": "<i4",
+    }
+
+    type_str = mapping_modes[mode]
+    return ModeDescriptor(mode, ("I",), "L", "L", type_str)
diff --git a/src/PIL/ImageMorph.py b/src/PIL/ImageMorph.py
index 6fccc315b..f0a066b5b 100644
--- a/src/PIL/ImageMorph.py
+++ b/src/PIL/ImageMorph.py
@@ -4,6 +4,7 @@
 #   2014-06-04 Initial version.
 #
 # Copyright (c) 2014 Dov Grobgeld <dov.grobgeld@gmail.com>
+from __future__ import annotations
 
 import re
 
@@ -61,12 +62,14 @@ class LutBuilder:
 
     """
 
-    def __init__(self, patterns=None, op_name=None):
+    def __init__(
+        self, patterns: list[str] | None = None, op_name: str | None = None
+    ) -> None:
         if patterns is not None:
             self.patterns = patterns
         else:
             self.patterns = []
-        self.lut = None
+        self.lut: bytearray | None = None
         if op_name is not None:
             known_patterns = {
                 "corner": ["1:(... ... ...)->0", "4:(00. 01. ...)->1"],
@@ -81,30 +84,32 @@ class LutBuilder:
                 ],
             }
             if op_name not in known_patterns:
-                msg = "Unknown pattern " + op_name + "!"
+                msg = f"Unknown pattern {op_name}!"
                 raise Exception(msg)
 
             self.patterns = known_patterns[op_name]
 
-    def add_patterns(self, patterns):
+    def add_patterns(self, patterns: list[str]) -> None:
         self.patterns += patterns
 
-    def build_default_lut(self):
+    def build_default_lut(self) -> None:
         symbols = [0, 1]
         m = 1 << 4  # pos of current pixel
         self.lut = bytearray(symbols[(i & m) > 0] for i in range(LUT_SIZE))
 
-    def get_lut(self):
+    def get_lut(self) -> bytearray | None:
         return self.lut
 
-    def _string_permute(self, pattern, permutation):
+    def _string_permute(self, pattern: str, permutation: list[int]) -> str:
         """string_permute takes a pattern and a permutation and returns the
         string permuted according to the permutation list.
         """
         assert len(permutation) == 9
         return "".join(pattern[p] for p in permutation)
 
-    def _pattern_permute(self, basic_pattern, options, basic_result):
+    def _pattern_permute(
+        self, basic_pattern: str, options: str, basic_result: int
+    ) -> list[tuple[str, int]]:
         """pattern_permute takes a basic pattern and its result and clones
         the pattern according to the modifications described in the $options
         parameter. It returns a list of all cloned patterns."""
@@ -134,12 +139,13 @@ class LutBuilder:
 
         return patterns
 
-    def build_lut(self):
+    def build_lut(self) -> bytearray:
         """Compile all patterns into a morphology lut.
 
         TBD :Build based on (file) morphlut:modify_lut
         """
         self.build_default_lut()
+        assert self.lut is not None
         patterns = []
 
         # Parse and create symmetries of the patterns strings
@@ -158,10 +164,10 @@ class LutBuilder:
             patterns += self._pattern_permute(pattern, options, result)
 
         # compile the patterns into regular expressions for speed
-        for i, pattern in enumerate(patterns):
+        compiled_patterns = []
+        for pattern in patterns:
             p = pattern[0].replace(".", "X").replace("X", "[01]")
-            p = re.compile(p)
-            patterns[i] = (p, pattern[1])
+            compiled_patterns.append((re.compile(p), pattern[1]))
 
         # Step through table and find patterns that match.
         # Note that all the patterns are searched. The last one
@@ -171,8 +177,8 @@ class LutBuilder:
             bitpattern = bin(i)[2:]
             bitpattern = ("0" * (9 - len(bitpattern)) + bitpattern)[::-1]
 
-            for p, r in patterns:
-                if p.match(bitpattern):
+            for pattern, r in compiled_patterns:
+                if pattern.match(bitpattern):
                     self.lut[i] = [0, 1][r]
 
         return self.lut
@@ -181,7 +187,12 @@ class LutBuilder:
 class MorphOp:
     """A class for binary morphological operators"""
 
-    def __init__(self, lut=None, op_name=None, patterns=None):
+    def __init__(
+        self,
+        lut: bytearray | None = None,
+        op_name: str | None = None,
+        patterns: list[str] | None = None,
+    ) -> None:
         """Create a binary morphological operator"""
         self.lut = lut
         if op_name is not None:
@@ -189,7 +200,7 @@ class MorphOp:
         elif patterns is not None:
             self.lut = LutBuilder(patterns=patterns).build_lut()
 
-    def apply(self, image):
+    def apply(self, image: Image.Image) -> tuple[int, Image.Image]:
         """Run a single morphological operation on an image
 
         Returns a tuple of the number of changed pixels and the
@@ -202,10 +213,10 @@ class MorphOp:
             msg = "Image mode must be L"
             raise ValueError(msg)
         outimage = Image.new(image.mode, image.size, None)
-        count = _imagingmorph.apply(bytes(self.lut), image.im.id, outimage.im.id)
+        count = _imagingmorph.apply(bytes(self.lut), image.getim(), outimage.getim())
         return count, outimage
 
-    def match(self, image):
+    def match(self, image: Image.Image) -> list[tuple[int, int]]:
         """Get a list of coordinates matching the morphological operation on
         an image.
 
@@ -218,9 +229,9 @@ class MorphOp:
         if image.mode != "L":
             msg = "Image mode must be L"
             raise ValueError(msg)
-        return _imagingmorph.match(bytes(self.lut), image.im.id)
+        return _imagingmorph.match(bytes(self.lut), image.getim())
 
-    def get_on_pixels(self, image):
+    def get_on_pixels(self, image: Image.Image) -> list[tuple[int, int]]:
         """Get a list of all turned on pixels in a binary image
 
         Returns a list of tuples of (x,y) coordinates
@@ -229,9 +240,9 @@ class MorphOp:
         if image.mode != "L":
             msg = "Image mode must be L"
             raise ValueError(msg)
-        return _imagingmorph.get_on_pixels(image.im.id)
+        return _imagingmorph.get_on_pixels(image.getim())
 
-    def load_lut(self, filename):
+    def load_lut(self, filename: str) -> None:
         """Load an operator from an mrl file"""
         with open(filename, "rb") as f:
             self.lut = bytearray(f.read())
@@ -241,7 +252,7 @@ class MorphOp:
             msg = "Wrong size operator file!"
             raise Exception(msg)
 
-    def save_lut(self, filename):
+    def save_lut(self, filename: str) -> None:
         """Save an operator to an mrl file"""
         if self.lut is None:
             msg = "No operator loaded"
@@ -249,6 +260,6 @@ class MorphOp:
         with open(filename, "wb") as f:
             f.write(self.lut)
 
-    def set_lut(self, lut):
+    def set_lut(self, lut: bytearray | None) -> None:
         """Set the lut from an external source"""
         self.lut = lut
diff --git a/src/PIL/ImageOps.py b/src/PIL/ImageOps.py
index 17702778c..44aad0c3c 100644
--- a/src/PIL/ImageOps.py
+++ b/src/PIL/ImageOps.py
@@ -16,10 +16,13 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import functools
 import operator
 import re
+from collections.abc import Sequence
+from typing import Protocol, cast
 
 from . import ExifTags, Image, ImagePalette
 
@@ -27,7 +30,7 @@ from . import ExifTags, Image, ImagePalette
 # helpers
 
 
-def _border(border):
+def _border(border: int | tuple[int, ...]) -> tuple[int, int, int, int]:
     if isinstance(border, tuple):
         if len(border) == 2:
             left, top = right, bottom = border
@@ -38,7 +41,7 @@ def _border(border):
     return left, top, right, bottom
 
 
-def _color(color, mode):
+def _color(color: str | int | tuple[int, ...], mode: str) -> int | tuple[int, ...]:
     if isinstance(color, str):
         from . import ImageColor
 
@@ -46,7 +49,7 @@ def _color(color, mode):
     return color
 
 
-def _lut(image, lut):
+def _lut(image: Image.Image, lut: list[int]) -> Image.Image:
     if image.mode == "P":
         # FIXME: apply to lookup table, not image data
         msg = "mode P support coming soon"
@@ -56,7 +59,7 @@ def _lut(image, lut):
             lut = lut + lut + lut
         return image.point(lut)
     else:
-        msg = "not supported for this image mode"
+        msg = f"not supported for mode {image.mode}"
         raise OSError(msg)
 
 
@@ -64,7 +67,13 @@ def _lut(image, lut):
 # actions
 
 
-def autocontrast(image, cutoff=0, ignore=None, mask=None, preserve_tone=False):
+def autocontrast(
+    image: Image.Image,
+    cutoff: float | tuple[float, float] = 0,
+    ignore: int | Sequence[int] | None = None,
+    mask: Image.Image | None = None,
+    preserve_tone: bool = False,
+) -> Image.Image:
     """
     Maximize (normalize) image contrast. This function calculates a
     histogram of the input image (or mask region), removes ``cutoff`` percent of the
@@ -96,10 +105,9 @@ def autocontrast(image, cutoff=0, ignore=None, mask=None, preserve_tone=False):
         h = histogram[layer : layer + 256]
         if ignore is not None:
             # get rid of outliers
-            try:
+            if isinstance(ignore, int):
                 h[ignore] = 0
-            except TypeError:
-                # assume sequence
+            else:
                 for ix in ignore:
                     h[ix] = 0
         if cutoff:
@@ -111,7 +119,7 @@ def autocontrast(image, cutoff=0, ignore=None, mask=None, preserve_tone=False):
             for ix in range(256):
                 n = n + h[ix]
             # remove cutoff% pixels from the low end
-            cut = n * cutoff[0] // 100
+            cut = int(n * cutoff[0] // 100)
             for lo in range(256):
                 if cut > h[lo]:
                     cut = cut - h[lo]
@@ -122,7 +130,7 @@ def autocontrast(image, cutoff=0, ignore=None, mask=None, preserve_tone=False):
                 if cut <= 0:
                     break
             # remove cutoff% samples from the high end
-            cut = n * cutoff[1] // 100
+            cut = int(n * cutoff[1] // 100)
             for hi in range(255, -1, -1):
                 if cut > h[hi]:
                     cut = cut - h[hi]
@@ -155,7 +163,15 @@ def autocontrast(image, cutoff=0, ignore=None, mask=None, preserve_tone=False):
     return _lut(image, lut)
 
 
-def colorize(image, black, white, mid=None, blackpoint=0, whitepoint=255, midpoint=127):
+def colorize(
+    image: Image.Image,
+    black: str | tuple[int, ...],
+    white: str | tuple[int, ...],
+    mid: str | int | tuple[int, ...] | None = None,
+    blackpoint: int = 0,
+    whitepoint: int = 255,
+    midpoint: int = 127,
+) -> Image.Image:
     """
     Colorize grayscale image.
     This function calculates a color wedge which maps all black pixels in
@@ -187,10 +203,9 @@ def colorize(image, black, white, mid=None, blackpoint=0, whitepoint=255, midpoi
         assert 0 <= blackpoint <= midpoint <= whitepoint <= 255
 
     # Define colors from arguments
-    black = _color(black, "RGB")
-    white = _color(white, "RGB")
-    if mid is not None:
-        mid = _color(mid, "RGB")
+    rgb_black = cast(Sequence[int], _color(black, "RGB"))
+    rgb_white = cast(Sequence[int], _color(white, "RGB"))
+    rgb_mid = cast(Sequence[int], _color(mid, "RGB")) if mid is not None else None
 
     # Empty lists for the mapping
     red = []
@@ -199,18 +214,24 @@ def colorize(image, black, white, mid=None, blackpoint=0, whitepoint=255, midpoi
 
     # Create the low-end values
     for i in range(0, blackpoint):
-        red.append(black[0])
-        green.append(black[1])
-        blue.append(black[2])
+        red.append(rgb_black[0])
+        green.append(rgb_black[1])
+        blue.append(rgb_black[2])
 
     # Create the mapping (2-color)
-    if mid is None:
+    if rgb_mid is None:
         range_map = range(0, whitepoint - blackpoint)
 
         for i in range_map:
-            red.append(black[0] + i * (white[0] - black[0]) // len(range_map))
-            green.append(black[1] + i * (white[1] - black[1]) // len(range_map))
-            blue.append(black[2] + i * (white[2] - black[2]) // len(range_map))
+            red.append(
+                rgb_black[0] + i * (rgb_white[0] - rgb_black[0]) // len(range_map)
+            )
+            green.append(
+                rgb_black[1] + i * (rgb_white[1] - rgb_black[1]) // len(range_map)
+            )
+            blue.append(
+                rgb_black[2] + i * (rgb_white[2] - rgb_black[2]) // len(range_map)
+            )
 
     # Create the mapping (3-color)
     else:
@@ -218,31 +239,41 @@ def colorize(image, black, white, mid=None, blackpoint=0, whitepoint=255, midpoi
         range_map2 = range(0, whitepoint - midpoint)
 
         for i in range_map1:
-            red.append(black[0] + i * (mid[0] - black[0]) // len(range_map1))
-            green.append(black[1] + i * (mid[1] - black[1]) // len(range_map1))
-            blue.append(black[2] + i * (mid[2] - black[2]) // len(range_map1))
+            red.append(
+                rgb_black[0] + i * (rgb_mid[0] - rgb_black[0]) // len(range_map1)
+            )
+            green.append(
+                rgb_black[1] + i * (rgb_mid[1] - rgb_black[1]) // len(range_map1)
+            )
+            blue.append(
+                rgb_black[2] + i * (rgb_mid[2] - rgb_black[2]) // len(range_map1)
+            )
         for i in range_map2:
-            red.append(mid[0] + i * (white[0] - mid[0]) // len(range_map2))
-            green.append(mid[1] + i * (white[1] - mid[1]) // len(range_map2))
-            blue.append(mid[2] + i * (white[2] - mid[2]) // len(range_map2))
+            red.append(rgb_mid[0] + i * (rgb_white[0] - rgb_mid[0]) // len(range_map2))
+            green.append(
+                rgb_mid[1] + i * (rgb_white[1] - rgb_mid[1]) // len(range_map2)
+            )
+            blue.append(rgb_mid[2] + i * (rgb_white[2] - rgb_mid[2]) // len(range_map2))
 
     # Create the high-end values
     for i in range(0, 256 - whitepoint):
-        red.append(white[0])
-        green.append(white[1])
-        blue.append(white[2])
+        red.append(rgb_white[0])
+        green.append(rgb_white[1])
+        blue.append(rgb_white[2])
 
     # Return converted image
     image = image.convert("RGB")
     return _lut(image, red + green + blue)
 
 
-def contain(image, size, method=Image.Resampling.BICUBIC):
+def contain(
+    image: Image.Image, size: tuple[int, int], method: int = Image.Resampling.BICUBIC
+) -> Image.Image:
     """
     Returns a resized version of the image, set to the maximum width and height
     within the requested size, while maintaining the original aspect ratio.
 
-    :param image: The image to resize and crop.
+    :param image: The image to resize.
     :param size: The requested output size in pixels, given as a
                  (width, height) tuple.
     :param method: Resampling method to use. Default is
@@ -266,7 +297,44 @@ def contain(image, size, method=Image.Resampling.BICUBIC):
     return image.resize(size, resample=method)
 
 
-def pad(image, size, method=Image.Resampling.BICUBIC, color=None, centering=(0.5, 0.5)):
+def cover(
+    image: Image.Image, size: tuple[int, int], method: int = Image.Resampling.BICUBIC
+) -> Image.Image:
+    """
+    Returns a resized version of the image, so that the requested size is
+    covered, while maintaining the original aspect ratio.
+
+    :param image: The image to resize.
+    :param size: The requested output size in pixels, given as a
+                 (width, height) tuple.
+    :param method: Resampling method to use. Default is
+                   :py:attr:`~PIL.Image.Resampling.BICUBIC`.
+                   See :ref:`concept-filters`.
+    :return: An image.
+    """
+
+    im_ratio = image.width / image.height
+    dest_ratio = size[0] / size[1]
+
+    if im_ratio != dest_ratio:
+        if im_ratio < dest_ratio:
+            new_height = round(image.height / image.width * size[0])
+            if new_height != size[1]:
+                size = (size[0], new_height)
+        else:
+            new_width = round(image.width / image.height * size[1])
+            if new_width != size[0]:
+                size = (new_width, size[1])
+    return image.resize(size, resample=method)
+
+
+def pad(
+    image: Image.Image,
+    size: tuple[int, int],
+    method: int = Image.Resampling.BICUBIC,
+    color: str | int | tuple[int, ...] | None = None,
+    centering: tuple[float, float] = (0.5, 0.5),
+) -> Image.Image:
     """
     Returns a resized and padded version of the image, expanded to fill the
     requested aspect ratio and size.
@@ -294,7 +362,9 @@ def pad(image, size, method=Image.Resampling.BICUBIC, color=None, centering=(0.5
     else:
         out = Image.new(image.mode, size, color)
         if resized.palette:
-            out.putpalette(resized.getpalette())
+            palette = resized.getpalette()
+            if palette is not None:
+                out.putpalette(palette)
         if resized.width != size[0]:
             x = round((size[0] - resized.width) * max(0, min(centering[0], 1)))
             out.paste(resized, (x, 0))
@@ -304,7 +374,7 @@ def pad(image, size, method=Image.Resampling.BICUBIC, color=None, centering=(0.5
     return out
 
 
-def crop(image, border=0):
+def crop(image: Image.Image, border: int = 0) -> Image.Image:
     """
     Remove border from image.  The same amount of pixels are removed
     from all four sides.  This function works on all image modes.
@@ -319,7 +389,9 @@ def crop(image, border=0):
     return image.crop((left, top, image.size[0] - right, image.size[1] - bottom))
 
 
-def scale(image, factor, resample=Image.Resampling.BICUBIC):
+def scale(
+    image: Image.Image, factor: float, resample: int = Image.Resampling.BICUBIC
+) -> Image.Image:
     """
     Returns a rescaled image by a specific factor given in parameter.
     A factor greater than 1 expands the image, between 0 and 1 contracts the
@@ -342,7 +414,27 @@ def scale(image, factor, resample=Image.Resampling.BICUBIC):
         return image.resize(size, resample)
 
 
-def deform(image, deformer, resample=Image.Resampling.BILINEAR):
+class SupportsGetMesh(Protocol):
+    """
+    An object that supports the ``getmesh`` method, taking an image as an
+    argument, and returning a list of tuples. Each tuple contains two tuples,
+    the source box as a tuple of 4 integers, and a tuple of 8 integers for the
+    final quadrilateral, in order of top left, bottom left, bottom right, top
+    right.
+    """
+
+    def getmesh(
+        self, image: Image.Image
+    ) -> list[
+        tuple[tuple[int, int, int, int], tuple[int, int, int, int, int, int, int, int]]
+    ]: ...
+
+
+def deform(
+    image: Image.Image,
+    deformer: SupportsGetMesh,
+    resample: int = Image.Resampling.BILINEAR,
+) -> Image.Image:
     """
     Deform the image.
 
@@ -358,7 +450,7 @@ def deform(image, deformer, resample=Image.Resampling.BILINEAR):
     )
 
 
-def equalize(image, mask=None):
+def equalize(image: Image.Image, mask: Image.Image | None = None) -> Image.Image:
     """
     Equalize the image histogram. This function applies a non-linear
     mapping to the input image, in order to create a uniform
@@ -389,7 +481,11 @@ def equalize(image, mask=None):
     return _lut(image, lut)
 
 
-def expand(image, border=0, fill=0):
+def expand(
+    image: Image.Image,
+    border: int | tuple[int, ...] = 0,
+    fill: str | int | tuple[int, ...] = 0,
+) -> Image.Image:
     """
     Add border to the image
 
@@ -404,7 +500,7 @@ def expand(image, border=0, fill=0):
     color = _color(fill, image.mode)
     if image.palette:
         palette = ImagePalette.ImagePalette(palette=image.getpalette())
-        if isinstance(color, tuple):
+        if isinstance(color, tuple) and (len(color) == 3 or len(color) == 4):
             color = palette.getcolor(color)
     else:
         palette = None
@@ -415,7 +511,13 @@ def expand(image, border=0, fill=0):
     return out
 
 
-def fit(image, size, method=Image.Resampling.BICUBIC, bleed=0.0, centering=(0.5, 0.5)):
+def fit(
+    image: Image.Image,
+    size: tuple[int, int],
+    method: int = Image.Resampling.BICUBIC,
+    bleed: float = 0.0,
+    centering: tuple[float, float] = (0.5, 0.5),
+) -> Image.Image:
     """
     Returns a resized and cropped version of the image, cropped to the
     requested aspect ratio and size.
@@ -449,13 +551,12 @@ def fit(image, size, method=Image.Resampling.BICUBIC, bleed=0.0, centering=(0.5,
     # kevin@cazabon.com
     # https://www.cazabon.com
 
-    # ensure centering is mutable
-    centering = list(centering)
+    centering_x, centering_y = centering
 
-    if not 0.0 <= centering[0] <= 1.0:
-        centering[0] = 0.5
-    if not 0.0 <= centering[1] <= 1.0:
-        centering[1] = 0.5
+    if not 0.0 <= centering_x <= 1.0:
+        centering_x = 0.5
+    if not 0.0 <= centering_y <= 1.0:
+        centering_y = 0.5
 
     if not 0.0 <= bleed < 0.5:
         bleed = 0.0
@@ -492,8 +593,8 @@ def fit(image, size, method=Image.Resampling.BICUBIC, bleed=0.0, centering=(0.5,
         crop_height = live_size[0] / output_ratio
 
     # make the crop
-    crop_left = bleed_pixels[0] + (live_size[0] - crop_width) * centering[0]
-    crop_top = bleed_pixels[1] + (live_size[1] - crop_height) * centering[1]
+    crop_left = bleed_pixels[0] + (live_size[0] - crop_width) * centering_x
+    crop_top = bleed_pixels[1] + (live_size[1] - crop_height) * centering_y
 
     crop = (crop_left, crop_top, crop_left + crop_width, crop_top + crop_height)
 
@@ -501,7 +602,7 @@ def fit(image, size, method=Image.Resampling.BICUBIC, bleed=0.0, centering=(0.5,
     return image.resize(size, method, box=crop)
 
 
-def flip(image):
+def flip(image: Image.Image) -> Image.Image:
     """
     Flip the image vertically (top to bottom).
 
@@ -511,7 +612,7 @@ def flip(image):
     return image.transpose(Image.Transpose.FLIP_TOP_BOTTOM)
 
 
-def grayscale(image):
+def grayscale(image: Image.Image) -> Image.Image:
     """
     Convert the image to grayscale.
 
@@ -521,20 +622,18 @@ def grayscale(image):
     return image.convert("L")
 
 
-def invert(image):
+def invert(image: Image.Image) -> Image.Image:
     """
     Invert (negate) the image.
 
     :param image: The image to invert.
     :return: An image.
     """
-    lut = []
-    for i in range(256):
-        lut.append(255 - i)
+    lut = list(range(255, -1, -1))
     return image.point(lut) if image.mode == "1" else _lut(image, lut)
 
 
-def mirror(image):
+def mirror(image: Image.Image) -> Image.Image:
     """
     Flip image horizontally (left to right).
 
@@ -544,7 +643,7 @@ def mirror(image):
     return image.transpose(Image.Transpose.FLIP_LEFT_RIGHT)
 
 
-def posterize(image, bits):
+def posterize(image: Image.Image, bits: int) -> Image.Image:
     """
     Reduce the number of bits for each color channel.
 
@@ -552,19 +651,17 @@ def posterize(image, bits):
     :param bits: The number of bits to keep for each channel (1-8).
     :return: An image.
     """
-    lut = []
     mask = ~(2 ** (8 - bits) - 1)
-    for i in range(256):
-        lut.append(i & mask)
+    lut = [i & mask for i in range(256)]
     return _lut(image, lut)
 
 
-def solarize(image, threshold=128):
+def solarize(image: Image.Image, threshold: int = 128) -> Image.Image:
     """
     Invert all pixel values above a threshold.
 
     :param image: The image to solarize.
-    :param threshold: All pixels above this greyscale level are inverted.
+    :param threshold: All pixels above this grayscale level are inverted.
     :return: An image.
     """
     lut = []
@@ -576,7 +673,7 @@ def solarize(image, threshold=128):
     return _lut(image, lut)
 
 
-def exif_transpose(image, *, in_place=False):
+def exif_transpose(image: Image.Image, *, in_place: bool = False) -> Image.Image | None:
     """
     If an image has an EXIF Orientation tag, other than 1, transpose the image
     accordingly, and remove the orientation data.
@@ -588,8 +685,9 @@ def exif_transpose(image, *, in_place=False):
         with the transposition applied. If there is no transposition, a copy of the
         image will be returned.
     """
+    image.load()
     image_exif = image.getexif()
-    orientation = image_exif.get(ExifTags.Base.Orientation)
+    orientation = image_exif.get(ExifTags.Base.Orientation, 1)
     method = {
         2: Image.Transpose.FLIP_LEFT_RIGHT,
         3: Image.Transpose.ROTATE_180,
@@ -603,7 +701,6 @@ def exif_transpose(image, *, in_place=False):
         transposed_image = image.transpose(method)
         if in_place:
             image.im = transposed_image.im
-            image.pyaccess = None
             image._size = transposed_image._size
         exif_image = image if in_place else transposed_image
 
@@ -614,15 +711,20 @@ def exif_transpose(image, *, in_place=False):
                 exif_image.info["exif"] = exif.tobytes()
             elif "Raw profile type exif" in exif_image.info:
                 exif_image.info["Raw profile type exif"] = exif.tobytes().hex()
-            elif "XML:com.adobe.xmp" in exif_image.info:
-                for pattern in (
-                    r'tiff:Orientation="([0-9])"',
-                    r"<tiff:Orientation>([0-9])</tiff:Orientation>",
-                ):
-                    exif_image.info["XML:com.adobe.xmp"] = re.sub(
-                        pattern, "", exif_image.info["XML:com.adobe.xmp"]
-                    )
+            for key in ("XML:com.adobe.xmp", "xmp"):
+                if key in exif_image.info:
+                    for pattern in (
+                        r'tiff:Orientation="([0-9])"',
+                        r"<tiff:Orientation>([0-9])</tiff:Orientation>",
+                    ):
+                        value = exif_image.info[key]
+                        exif_image.info[key] = (
+                            re.sub(pattern, "", value)
+                            if isinstance(value, str)
+                            else re.sub(pattern.encode(), b"", value)
+                        )
         if not in_place:
             return transposed_image
     elif not in_place:
         return image.copy()
+    return None
diff --git a/src/PIL/ImagePalette.py b/src/PIL/ImagePalette.py
index f0c094708..183f85526 100644
--- a/src/PIL/ImagePalette.py
+++ b/src/PIL/ImagePalette.py
@@ -15,11 +15,17 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import array
+from collections.abc import Sequence
+from typing import IO, TYPE_CHECKING
 
 from . import GimpGradientFile, GimpPaletteFile, ImageColor, PaletteFile
 
+if TYPE_CHECKING:
+    from . import Image
+
 
 class ImagePalette:
     """
@@ -33,23 +39,27 @@ class ImagePalette:
         Defaults to an empty palette.
     """
 
-    def __init__(self, mode="RGB", palette=None):
+    def __init__(
+        self,
+        mode: str = "RGB",
+        palette: Sequence[int] | bytes | bytearray | None = None,
+    ) -> None:
         self.mode = mode
-        self.rawmode = None  # if set, palette contains raw data
+        self.rawmode: str | None = None  # if set, palette contains raw data
         self.palette = palette or bytearray()
-        self.dirty = None
+        self.dirty: int | None = None
 
     @property
-    def palette(self):
+    def palette(self) -> Sequence[int] | bytes | bytearray:
         return self._palette
 
     @palette.setter
-    def palette(self, palette):
-        self._colors = None
+    def palette(self, palette: Sequence[int] | bytes | bytearray) -> None:
+        self._colors: dict[tuple[int, ...], int] | None = None
         self._palette = palette
 
     @property
-    def colors(self):
+    def colors(self) -> dict[tuple[int, ...], int]:
         if self._colors is None:
             mode_len = len(self.mode)
             self._colors = {}
@@ -61,10 +71,10 @@ class ImagePalette:
         return self._colors
 
     @colors.setter
-    def colors(self, colors):
+    def colors(self, colors: dict[tuple[int, ...], int]) -> None:
         self._colors = colors
 
-    def copy(self):
+    def copy(self) -> ImagePalette:
         new = ImagePalette()
 
         new.mode = self.mode
@@ -75,7 +85,7 @@ class ImagePalette:
 
         return new
 
-    def getdata(self):
+    def getdata(self) -> tuple[str, Sequence[int] | bytes | bytearray]:
         """
         Get palette contents in format suitable for the low-level
         ``im.putpalette`` primitive.
@@ -86,7 +96,7 @@ class ImagePalette:
             return self.rawmode, self.palette
         return self.mode, self.tobytes()
 
-    def tobytes(self):
+    def tobytes(self) -> bytes:
         """Convert palette to bytes.
 
         .. warning:: This method is experimental.
@@ -102,7 +112,37 @@ class ImagePalette:
     # Declare tostring as an alias for tobytes
     tostring = tobytes
 
-    def getcolor(self, color, image=None):
+    def _new_color_index(
+        self, image: Image.Image | None = None, e: Exception | None = None
+    ) -> int:
+        if not isinstance(self.palette, bytearray):
+            self._palette = bytearray(self.palette)
+        index = len(self.palette) // 3
+        special_colors: tuple[int | tuple[int, ...] | None, ...] = ()
+        if image:
+            special_colors = (
+                image.info.get("background"),
+                image.info.get("transparency"),
+            )
+            while index in special_colors:
+                index += 1
+        if index >= 256:
+            if image:
+                # Search for an unused index
+                for i, count in reversed(list(enumerate(image.histogram()))):
+                    if count == 0 and i not in special_colors:
+                        index = i
+                        break
+            if index >= 256:
+                msg = "cannot allocate more than 256 colors"
+                raise ValueError(msg) from e
+        return index
+
+    def getcolor(
+        self,
+        color: tuple[int, ...],
+        image: Image.Image | None = None,
+    ) -> int:
         """Given an rgb tuple, allocate palette entry.
 
         .. warning:: This method is experimental.
@@ -124,43 +164,24 @@ class ImagePalette:
                 return self.colors[color]
             except KeyError as e:
                 # allocate new color slot
-                if not isinstance(self.palette, bytearray):
-                    self._palette = bytearray(self.palette)
-                index = len(self.palette) // 3
-                special_colors = ()
-                if image:
-                    special_colors = (
-                        image.info.get("background"),
-                        image.info.get("transparency"),
-                    )
-                while index in special_colors:
-                    index += 1
-                if index >= 256:
-                    if image:
-                        # Search for an unused index
-                        for i, count in reversed(list(enumerate(image.histogram()))):
-                            if count == 0 and i not in special_colors:
-                                index = i
-                                break
-                    if index >= 256:
-                        msg = "cannot allocate more than 256 colors"
-                        raise ValueError(msg) from e
+                index = self._new_color_index(image, e)
+                assert isinstance(self._palette, bytearray)
                 self.colors[color] = index
                 if index * 3 < len(self.palette):
                     self._palette = (
-                        self.palette[: index * 3]
+                        self._palette[: index * 3]
                         + bytes(color)
-                        + self.palette[index * 3 + 3 :]
+                        + self._palette[index * 3 + 3 :]
                     )
                 else:
                     self._palette += bytes(color)
                 self.dirty = 1
                 return index
         else:
-            msg = f"unknown color specifier: {repr(color)}"
+            msg = f"unknown color specifier: {repr(color)}"  # type: ignore[unreachable]
             raise ValueError(msg)
 
-    def save(self, fp):
+    def save(self, fp: str | IO[str]) -> None:
         """Save palette to text file.
 
         .. warning:: This method is experimental.
@@ -187,7 +208,7 @@ class ImagePalette:
 # Internal
 
 
-def raw(rawmode, data):
+def raw(rawmode: str, data: Sequence[int] | bytes | bytearray) -> ImagePalette:
     palette = ImagePalette()
     palette.rawmode = rawmode
     palette.palette = data
@@ -199,65 +220,63 @@ def raw(rawmode, data):
 # Factories
 
 
-def make_linear_lut(black, white):
-    lut = []
+def make_linear_lut(black: int, white: float) -> list[int]:
     if black == 0:
-        for i in range(256):
-            lut.append(white * i // 255)
-    else:
-        raise NotImplementedError  # FIXME
-    return lut
+        return [int(white * i // 255) for i in range(256)]
+
+    msg = "unavailable when black is non-zero"
+    raise NotImplementedError(msg)  # FIXME
 
 
-def make_gamma_lut(exp):
-    lut = []
-    for i in range(256):
-        lut.append(int(((i / 255.0) ** exp) * 255.0 + 0.5))
-    return lut
+def make_gamma_lut(exp: float) -> list[int]:
+    return [int(((i / 255.0) ** exp) * 255.0 + 0.5) for i in range(256)]
 
 
-def negative(mode="RGB"):
+def negative(mode: str = "RGB") -> ImagePalette:
     palette = list(range(256 * len(mode)))
     palette.reverse()
     return ImagePalette(mode, [i // len(mode) for i in palette])
 
 
-def random(mode="RGB"):
+def random(mode: str = "RGB") -> ImagePalette:
     from random import randint
 
-    palette = []
-    for i in range(256 * len(mode)):
-        palette.append(randint(0, 255))
+    palette = [randint(0, 255) for _ in range(256 * len(mode))]
     return ImagePalette(mode, palette)
 
 
-def sepia(white="#fff0c0"):
+def sepia(white: str = "#fff0c0") -> ImagePalette:
     bands = [make_linear_lut(0, band) for band in ImageColor.getrgb(white)]
     return ImagePalette("RGB", [bands[i % 3][i // 3] for i in range(256 * 3)])
 
 
-def wedge(mode="RGB"):
+def wedge(mode: str = "RGB") -> ImagePalette:
     palette = list(range(256 * len(mode)))
     return ImagePalette(mode, [i // len(mode) for i in palette])
 
 
-def load(filename):
+def load(filename: str) -> tuple[bytes, str]:
     # FIXME: supports GIMP gradients only
 
     with open(filename, "rb") as fp:
-        for paletteHandler in [
+        paletteHandlers: list[
+            type[
+                GimpPaletteFile.GimpPaletteFile
+                | GimpGradientFile.GimpGradientFile
+                | PaletteFile.PaletteFile
+            ]
+        ] = [
             GimpPaletteFile.GimpPaletteFile,
             GimpGradientFile.GimpGradientFile,
             PaletteFile.PaletteFile,
-        ]:
+        ]
+        for paletteHandler in paletteHandlers:
             try:
                 fp.seek(0)
                 lut = paletteHandler(fp).getpalette()
                 if lut:
                     break
             except (SyntaxError, ValueError):
-                # import traceback
-                # traceback.print_exc()
                 pass
         else:
             msg = "cannot load palette"
diff --git a/src/PIL/ImagePath.py b/src/PIL/ImagePath.py
index 3d3538c97..77e8a609a 100644
--- a/src/PIL/ImagePath.py
+++ b/src/PIL/ImagePath.py
@@ -13,6 +13,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 from . import Image
 
diff --git a/src/PIL/ImageQt.py b/src/PIL/ImageQt.py
index 9b7245454..2cc40f855 100644
--- a/src/PIL/ImageQt.py
+++ b/src/PIL/ImageQt.py
@@ -15,22 +15,38 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import sys
 from io import BytesIO
+from typing import TYPE_CHECKING, Any, Callable, Union
 
 from . import Image
 from ._util import is_path
 
+if TYPE_CHECKING:
+    import PyQt6
+    import PySide6
+
+    from . import ImageFile
+
+    QBuffer: type
+    QByteArray = Union[PyQt6.QtCore.QByteArray, PySide6.QtCore.QByteArray]
+    QIODevice = Union[PyQt6.QtCore.QIODevice, PySide6.QtCore.QIODevice]
+    QImage = Union[PyQt6.QtGui.QImage, PySide6.QtGui.QImage]
+    QPixmap = Union[PyQt6.QtGui.QPixmap, PySide6.QtGui.QPixmap]
+
+qt_version: str | None
 qt_versions = [
     ["6", "PyQt6"],
     ["side6", "PySide6"],
 ]
 
 # If a version has already been imported, attempt it first
-qt_versions.sort(key=lambda qt_version: qt_version[1] in sys.modules, reverse=True)
-for qt_version, qt_module in qt_versions:
+qt_versions.sort(key=lambda version: version[1] in sys.modules, reverse=True)
+for version, qt_module in qt_versions:
     try:
+        qRgba: Callable[[int, int, int, int], int]
         if qt_module == "PyQt6":
             from PyQt6.QtCore import QBuffer, QIODevice
             from PyQt6.QtGui import QImage, QPixmap, qRgba
@@ -40,32 +56,34 @@ for qt_version, qt_module in qt_versions:
     except (ImportError, RuntimeError):
         continue
     qt_is_installed = True
+    qt_version = version
     break
 else:
     qt_is_installed = False
     qt_version = None
 
 
-def rgb(r, g, b, a=255):
+def rgb(r: int, g: int, b: int, a: int = 255) -> int:
     """(Internal) Turns an RGB color into a Qt compatible color integer."""
     # use qRgb to pack the colors, and then turn the resulting long
     # into a negative integer with the same bitpattern.
     return qRgba(r, g, b, a) & 0xFFFFFFFF
 
 
-def fromqimage(im):
+def fromqimage(im: QImage | QPixmap) -> ImageFile.ImageFile:
     """
     :param im: QImage or PIL ImageQt object
     """
     buffer = QBuffer()
+    qt_openmode: object
     if qt_version == "6":
         try:
-            qt_openmode = QIODevice.OpenModeFlag
+            qt_openmode = getattr(QIODevice, "OpenModeFlag")
         except AttributeError:
-            qt_openmode = QIODevice.OpenMode
+            qt_openmode = getattr(QIODevice, "OpenMode")
     else:
         qt_openmode = QIODevice
-    buffer.open(qt_openmode.ReadWrite)
+    buffer.open(getattr(qt_openmode, "ReadWrite"))
     # preserve alpha channel with png
     # otherwise ppm is more friendly with Image.open
     if im.hasAlphaChannel():
@@ -81,21 +99,11 @@ def fromqimage(im):
     return Image.open(b)
 
 
-def fromqpixmap(im):
+def fromqpixmap(im: QPixmap) -> ImageFile.ImageFile:
     return fromqimage(im)
-    # buffer = QBuffer()
-    # buffer.open(QIODevice.ReadWrite)
-    # # im.save(buffer)
-    # # What if png doesn't support some image features like animation?
-    # im.save(buffer, 'ppm')
-    # bytes_io = BytesIO()
-    # bytes_io.write(buffer.data())
-    # buffer.close()
-    # bytes_io.seek(0)
-    # return Image.open(bytes_io)
 
 
-def align8to32(bytes, width, mode):
+def align8to32(bytes: bytes, width: int, mode: str) -> bytes:
     """
     converts each scanline of data from 8 bit to 32 bit aligned
     """
@@ -113,17 +121,15 @@ def align8to32(bytes, width, mode):
     if not extra_padding:
         return bytes
 
-    new_data = []
-    for i in range(len(bytes) // bytes_per_line):
-        new_data.append(
-            bytes[i * bytes_per_line : (i + 1) * bytes_per_line]
-            + b"\x00" * extra_padding
-        )
+    new_data = [
+        bytes[i * bytes_per_line : (i + 1) * bytes_per_line] + b"\x00" * extra_padding
+        for i in range(len(bytes) // bytes_per_line)
+    ]
 
     return b"".join(new_data)
 
 
-def _toqclass_helper(im):
+def _toqclass_helper(im: Image.Image | str | QByteArray) -> dict[str, Any]:
     data = None
     colortable = None
     exclusive_fp = False
@@ -135,34 +141,32 @@ def _toqclass_helper(im):
     if is_path(im):
         im = Image.open(im)
         exclusive_fp = True
+    assert isinstance(im, Image.Image)
 
-    qt_format = QImage.Format if qt_version == "6" else QImage
+    qt_format = getattr(QImage, "Format") if qt_version == "6" else QImage
     if im.mode == "1":
-        format = qt_format.Format_Mono
+        format = getattr(qt_format, "Format_Mono")
     elif im.mode == "L":
-        format = qt_format.Format_Indexed8
-        colortable = []
-        for i in range(256):
-            colortable.append(rgb(i, i, i))
+        format = getattr(qt_format, "Format_Indexed8")
+        colortable = [rgb(i, i, i) for i in range(256)]
     elif im.mode == "P":
-        format = qt_format.Format_Indexed8
-        colortable = []
+        format = getattr(qt_format, "Format_Indexed8")
         palette = im.getpalette()
-        for i in range(0, len(palette), 3):
-            colortable.append(rgb(*palette[i : i + 3]))
+        assert palette is not None
+        colortable = [rgb(*palette[i : i + 3]) for i in range(0, len(palette), 3)]
     elif im.mode == "RGB":
         # Populate the 4th channel with 255
         im = im.convert("RGBA")
 
         data = im.tobytes("raw", "BGRA")
-        format = qt_format.Format_RGB32
+        format = getattr(qt_format, "Format_RGB32")
     elif im.mode == "RGBA":
         data = im.tobytes("raw", "BGRA")
-        format = qt_format.Format_ARGB32
-    elif im.mode == "I;16" and hasattr(qt_format, "Format_Grayscale16"):  # Qt 5.13+
+        format = getattr(qt_format, "Format_ARGB32")
+    elif im.mode == "I;16":
         im = im.point(lambda i: i * 256)
 
-        format = qt_format.Format_Grayscale16
+        format = getattr(qt_format, "Format_Grayscale16")
     else:
         if exclusive_fp:
             im.close()
@@ -178,8 +182,8 @@ def _toqclass_helper(im):
 
 if qt_is_installed:
 
-    class ImageQt(QImage):
-        def __init__(self, im):
+    class ImageQt(QImage):  # type: ignore[misc]
+        def __init__(self, im: Image.Image | str | QByteArray) -> None:
             """
             An PIL image wrapper for Qt.  This is a subclass of PyQt's QImage
             class.
@@ -203,14 +207,13 @@ if qt_is_installed:
                 self.setColorTable(im_data["colortable"])
 
 
-def toqimage(im):
+def toqimage(im: Image.Image | str | QByteArray) -> ImageQt:
     return ImageQt(im)
 
 
-def toqpixmap(im):
-    # # This doesn't work. For now using a dumb approach.
-    # im_data = _toqclass_helper(im)
-    # result = QPixmap(im_data["size"][0], im_data["size"][1])
-    # result.loadFromData(im_data["data"])
+def toqpixmap(im: Image.Image | str | QByteArray) -> QPixmap:
     qimage = toqimage(im)
-    return QPixmap.fromImage(qimage)
+    pixmap = getattr(QPixmap, "fromImage")(qimage)
+    if qt_version == "6":
+        pixmap.detach()
+    return pixmap
diff --git a/src/PIL/ImageSequence.py b/src/PIL/ImageSequence.py
index c4bb6334a..a6fc340d5 100644
--- a/src/PIL/ImageSequence.py
+++ b/src/PIL/ImageSequence.py
@@ -14,6 +14,11 @@
 #
 
 ##
+from __future__ import annotations
+
+from typing import Callable
+
+from . import Image
 
 
 class Iterator:
@@ -28,33 +33,38 @@ class Iterator:
     :param im: An image object.
     """
 
-    def __init__(self, im):
+    def __init__(self, im: Image.Image) -> None:
         if not hasattr(im, "seek"):
             msg = "im must have seek method"
             raise AttributeError(msg)
         self.im = im
         self.position = getattr(self.im, "_min_frame", 0)
 
-    def __getitem__(self, ix):
+    def __getitem__(self, ix: int) -> Image.Image:
         try:
             self.im.seek(ix)
             return self.im
         except EOFError as e:
-            raise IndexError from e  # end of sequence
+            msg = "end of sequence"
+            raise IndexError(msg) from e
 
-    def __iter__(self):
+    def __iter__(self) -> Iterator:
         return self
 
-    def __next__(self):
+    def __next__(self) -> Image.Image:
         try:
             self.im.seek(self.position)
             self.position += 1
             return self.im
         except EOFError as e:
-            raise StopIteration from e
+            msg = "end of sequence"
+            raise StopIteration(msg) from e
 
 
-def all_frames(im, func=None):
+def all_frames(
+    im: Image.Image | list[Image.Image],
+    func: Callable[[Image.Image], Image.Image] | None = None,
+) -> list[Image.Image]:
     """
     Applies a given function to all frames in an image or a list of images.
     The frames are returned as a list of separate images.
diff --git a/src/PIL/ImageShow.py b/src/PIL/ImageShow.py
index 8b1c3f8bb..d62893d9c 100644
--- a/src/PIL/ImageShow.py
+++ b/src/PIL/ImageShow.py
@@ -11,18 +11,22 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
+import abc
 import os
 import shutil
 import subprocess
 import sys
 from shlex import quote
+from typing import Any
 
 from . import Image
 
 _viewers = []
 
 
-def register(viewer, order=1):
+def register(viewer: type[Viewer] | Viewer, order: int = 1) -> None:
     """
     The :py:func:`register` function is used to register additional viewers::
 
@@ -36,18 +40,15 @@ def register(viewer, order=1):
         Zero or a negative integer to prepend this viewer to the list,
         a positive integer to append it.
     """
-    try:
-        if issubclass(viewer, Viewer):
-            viewer = viewer()
-    except TypeError:
-        pass  # raised if viewer wasn't a class
+    if isinstance(viewer, type) and issubclass(viewer, Viewer):
+        viewer = viewer()
     if order > 0:
         _viewers.append(viewer)
     else:
         _viewers.insert(0, viewer)
 
 
-def show(image, title=None, **options):
+def show(image: Image.Image, title: str | None = None, **options: Any) -> bool:
     r"""
     Display a given image.
 
@@ -67,7 +68,7 @@ class Viewer:
 
     # main api
 
-    def show(self, image, **options):
+    def show(self, image: Image.Image, **options: Any) -> int:
         """
         The main function for displaying an image.
         Converts the given image to the target format and displays it.
@@ -85,34 +86,37 @@ class Viewer:
 
     # hook methods
 
-    format = None
+    format: str | None = None
     """The format to convert the image into."""
-    options = {}
+    options: dict[str, Any] = {}
     """Additional options used to convert the image."""
 
-    def get_format(self, image):
+    def get_format(self, image: Image.Image) -> str | None:
         """Return format name, or ``None`` to save as PGM/PPM."""
         return self.format
 
-    def get_command(self, file, **options):
+    def get_command(self, file: str, **options: Any) -> str:
         """
         Returns the command used to display the file.
         Not implemented in the base class.
         """
-        raise NotImplementedError
+        msg = "unavailable in base viewer"
+        raise NotImplementedError(msg)
 
-    def save_image(self, image):
+    def save_image(self, image: Image.Image) -> str:
         """Save to temporary file and return filename."""
         return image._dump(format=self.get_format(image), **self.options)
 
-    def show_image(self, image, **options):
+    def show_image(self, image: Image.Image, **options: Any) -> int:
         """Display the given image."""
         return self.show_file(self.save_image(image), **options)
 
-    def show_file(self, path, **options):
+    def show_file(self, path: str, **options: Any) -> int:
         """
         Display given file.
         """
+        if not os.path.exists(path):
+            raise FileNotFoundError
         os.system(self.get_command(path, **options))  # nosec
         return 1
 
@@ -126,13 +130,26 @@ class WindowsViewer(Viewer):
     format = "PNG"
     options = {"compress_level": 1, "save_all": True}
 
-    def get_command(self, file, **options):
+    def get_command(self, file: str, **options: Any) -> str:
         return (
             f'start "Pillow" /WAIT "{file}" '
             "&& ping -n 4 127.0.0.1 >NUL "
             f'&& del /f "{file}"'
         )
 
+    def show_file(self, path: str, **options: Any) -> int:
+        """
+        Display given file.
+        """
+        if not os.path.exists(path):
+            raise FileNotFoundError
+        subprocess.Popen(
+            self.get_command(path, **options),
+            shell=True,
+            creationflags=getattr(subprocess, "CREATE_NO_WINDOW"),
+        )  # nosec
+        return 1
+
 
 if sys.platform == "win32":
     register(WindowsViewer)
@@ -144,17 +161,19 @@ class MacViewer(Viewer):
     format = "PNG"
     options = {"compress_level": 1, "save_all": True}
 
-    def get_command(self, file, **options):
+    def get_command(self, file: str, **options: Any) -> str:
         # on darwin open returns immediately resulting in the temp
         # file removal while app is opening
         command = "open -a Preview.app"
         command = f"({command} {quote(file)}; sleep 20; rm -f {quote(file)})&"
         return command
 
-    def show_file(self, path, **options):
+    def show_file(self, path: str, **options: Any) -> int:
         """
         Display given file.
         """
+        if not os.path.exists(path):
+            raise FileNotFoundError
         subprocess.call(["open", "-a", "Preview.app", path])
         executable = sys.executable or shutil.which("python3")
         if executable:
@@ -177,9 +196,13 @@ class UnixViewer(Viewer):
     format = "PNG"
     options = {"compress_level": 1, "save_all": True}
 
-    def get_command(self, file, **options):
+    @abc.abstractmethod
+    def get_command_ex(self, file: str, **options: Any) -> tuple[str, str]:
+        pass
+
+    def get_command(self, file: str, **options: Any) -> str:
         command = self.get_command_ex(file, **options)[0]
-        return f"({command} {quote(file)}"
+        return f"{command} {quote(file)}"
 
 
 class XDGViewer(UnixViewer):
@@ -187,14 +210,16 @@ class XDGViewer(UnixViewer):
     The freedesktop.org ``xdg-open`` command.
     """
 
-    def get_command_ex(self, file, **options):
+    def get_command_ex(self, file: str, **options: Any) -> tuple[str, str]:
         command = executable = "xdg-open"
         return command, executable
 
-    def show_file(self, path, **options):
+    def show_file(self, path: str, **options: Any) -> int:
         """
         Display given file.
         """
+        if not os.path.exists(path):
+            raise FileNotFoundError
         subprocess.Popen(["xdg-open", path])
         return 1
 
@@ -205,16 +230,20 @@ class DisplayViewer(UnixViewer):
     This viewer supports the ``title`` parameter.
     """
 
-    def get_command_ex(self, file, title=None, **options):
+    def get_command_ex(
+        self, file: str, title: str | None = None, **options: Any
+    ) -> tuple[str, str]:
         command = executable = "display"
         if title:
             command += f" -title {quote(title)}"
         return command, executable
 
-    def show_file(self, path, **options):
+    def show_file(self, path: str, **options: Any) -> int:
         """
         Display given file.
         """
+        if not os.path.exists(path):
+            raise FileNotFoundError
         args = ["display"]
         title = options.get("title")
         if title:
@@ -228,15 +257,17 @@ class DisplayViewer(UnixViewer):
 class GmDisplayViewer(UnixViewer):
     """The GraphicsMagick ``gm display`` command."""
 
-    def get_command_ex(self, file, **options):
+    def get_command_ex(self, file: str, **options: Any) -> tuple[str, str]:
         executable = "gm"
         command = "gm display"
         return command, executable
 
-    def show_file(self, path, **options):
+    def show_file(self, path: str, **options: Any) -> int:
         """
         Display given file.
         """
+        if not os.path.exists(path):
+            raise FileNotFoundError
         subprocess.Popen(["gm", "display", path])
         return 1
 
@@ -244,15 +275,17 @@ class GmDisplayViewer(UnixViewer):
 class EogViewer(UnixViewer):
     """The GNOME Image Viewer ``eog`` command."""
 
-    def get_command_ex(self, file, **options):
+    def get_command_ex(self, file: str, **options: Any) -> tuple[str, str]:
         executable = "eog"
         command = "eog -n"
         return command, executable
 
-    def show_file(self, path, **options):
+    def show_file(self, path: str, **options: Any) -> int:
         """
         Display given file.
         """
+        if not os.path.exists(path):
+            raise FileNotFoundError
         subprocess.Popen(["eog", "-n", path])
         return 1
 
@@ -263,7 +296,9 @@ class XVViewer(UnixViewer):
     This viewer supports the ``title`` parameter.
     """
 
-    def get_command_ex(self, file, title=None, **options):
+    def get_command_ex(
+        self, file: str, title: str | None = None, **options: Any
+    ) -> tuple[str, str]:
         # note: xv is pretty outdated.  most modern systems have
         # imagemagick's display command instead.
         command = executable = "xv"
@@ -271,10 +306,12 @@ class XVViewer(UnixViewer):
             command += f" -name {quote(title)}"
         return command, executable
 
-    def show_file(self, path, **options):
+    def show_file(self, path: str, **options: Any) -> int:
         """
         Display given file.
         """
+        if not os.path.exists(path):
+            raise FileNotFoundError
         args = ["xv"]
         title = options.get("title")
         if title:
@@ -301,7 +338,7 @@ if sys.platform not in ("win32", "darwin"):  # unixoids
 class IPythonViewer(Viewer):
     """The viewer for IPython frontends."""
 
-    def show_image(self, image, **options):
+    def show_image(self, image: Image.Image, **options: Any) -> int:
         ipython_display(image)
         return 1
 
diff --git a/src/PIL/ImageStat.py b/src/PIL/ImageStat.py
index b7ebddf06..8bc504526 100644
--- a/src/PIL/ImageStat.py
+++ b/src/PIL/ImageStat.py
@@ -20,62 +20,82 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
-import functools
 import math
-import operator
+from functools import cached_property
+
+from . import Image
 
 
 class Stat:
-    def __init__(self, image_or_list, mask=None):
-        try:
-            if mask:
-                self.h = image_or_list.histogram(mask)
-            else:
-                self.h = image_or_list.histogram()
-        except AttributeError:
-            self.h = image_or_list  # assume it to be a histogram list
-        if not isinstance(self.h, list):
-            msg = "first argument must be image or list"
+    def __init__(
+        self, image_or_list: Image.Image | list[int], mask: Image.Image | None = None
+    ) -> None:
+        """
+        Calculate statistics for the given image. If a mask is included,
+        only the regions covered by that mask are included in the
+        statistics. You can also pass in a previously calculated histogram.
+
+        :param image: A PIL image, or a precalculated histogram.
+
+            .. note::
+
+                For a PIL image, calculations rely on the
+                :py:meth:`~PIL.Image.Image.histogram` method. The pixel counts are
+                grouped into 256 bins, even if the image has more than 8 bits per
+                channel. So ``I`` and ``F`` mode images have a maximum ``mean``,
+                ``median`` and ``rms`` of 255, and cannot have an ``extrema`` maximum
+                of more than 255.
+
+        :param mask: An optional mask.
+        """
+        if isinstance(image_or_list, Image.Image):
+            self.h = image_or_list.histogram(mask)
+        elif isinstance(image_or_list, list):
+            self.h = image_or_list
+        else:
+            msg = "first argument must be image or list"  # type: ignore[unreachable]
             raise TypeError(msg)
         self.bands = list(range(len(self.h) // 256))
 
-    def __getattr__(self, id):
-        """Calculate missing attribute"""
-        if id[:4] == "_get":
-            raise AttributeError(id)
-        # calculate missing attribute
-        v = getattr(self, "_get" + id)()
-        setattr(self, id, v)
-        return v
+    @cached_property
+    def extrema(self) -> list[tuple[int, int]]:
+        """
+        Min/max values for each band in the image.
 
-    def _getextrema(self):
-        """Get min/max values for each band in the image"""
+        .. note::
+            This relies on the :py:meth:`~PIL.Image.Image.histogram` method, and
+            simply returns the low and high bins used. This is correct for
+            images with 8 bits per channel, but fails for other modes such as
+            ``I`` or ``F``. Instead, use :py:meth:`~PIL.Image.Image.getextrema` to
+            return per-band extrema for the image. This is more correct and
+            efficient because, for non-8-bit modes, the histogram method uses
+            :py:meth:`~PIL.Image.Image.getextrema` to determine the bins used.
+        """
 
-        def minmax(histogram):
-            n = 255
-            x = 0
+        def minmax(histogram: list[int]) -> tuple[int, int]:
+            res_min, res_max = 255, 0
             for i in range(256):
                 if histogram[i]:
-                    n = min(n, i)
-                    x = max(x, i)
-            return n, x  # returns (255, 0) if there's no data in the histogram
+                    res_min = i
+                    break
+            for i in range(255, -1, -1):
+                if histogram[i]:
+                    res_max = i
+                    break
+            return res_min, res_max
 
-        v = []
-        for i in range(0, len(self.h), 256):
-            v.append(minmax(self.h[i:]))
-        return v
+        return [minmax(self.h[i:]) for i in range(0, len(self.h), 256)]
 
-    def _getcount(self):
-        """Get total number of pixels in each layer"""
+    @cached_property
+    def count(self) -> list[int]:
+        """Total number of pixels for each band in the image."""
+        return [sum(self.h[i : i + 256]) for i in range(0, len(self.h), 256)]
 
-        v = []
-        for i in range(0, len(self.h), 256):
-            v.append(functools.reduce(operator.add, self.h[i : i + 256]))
-        return v
-
-    def _getsum(self):
-        """Get sum of all pixels in each layer"""
+    @cached_property
+    def sum(self) -> list[float]:
+        """Sum of all pixels for each band in the image."""
 
         v = []
         for i in range(0, len(self.h), 256):
@@ -85,8 +105,9 @@ class Stat:
             v.append(layer_sum)
         return v
 
-    def _getsum2(self):
-        """Get squared sum of all pixels in each layer"""
+    @cached_property
+    def sum2(self) -> list[float]:
+        """Squared sum of all pixels for each band in the image."""
 
         v = []
         for i in range(0, len(self.h), 256):
@@ -96,16 +117,14 @@ class Stat:
             v.append(sum2)
         return v
 
-    def _getmean(self):
-        """Get average pixel level for each layer"""
+    @cached_property
+    def mean(self) -> list[float]:
+        """Average (arithmetic mean) pixel level for each band in the image."""
+        return [self.sum[i] / self.count[i] for i in self.bands]
 
-        v = []
-        for i in self.bands:
-            v.append(self.sum[i] / self.count[i])
-        return v
-
-    def _getmedian(self):
-        """Get median pixel level for each layer"""
+    @cached_property
+    def median(self) -> list[int]:
+        """Median pixel level for each band in the image."""
 
         v = []
         for i in self.bands:
@@ -119,30 +138,23 @@ class Stat:
             v.append(j)
         return v
 
-    def _getrms(self):
-        """Get RMS for each layer"""
+    @cached_property
+    def rms(self) -> list[float]:
+        """RMS (root-mean-square) for each band in the image."""
+        return [math.sqrt(self.sum2[i] / self.count[i]) for i in self.bands]
 
-        v = []
-        for i in self.bands:
-            v.append(math.sqrt(self.sum2[i] / self.count[i]))
-        return v
+    @cached_property
+    def var(self) -> list[float]:
+        """Variance for each band in the image."""
+        return [
+            (self.sum2[i] - (self.sum[i] ** 2.0) / self.count[i]) / self.count[i]
+            for i in self.bands
+        ]
 
-    def _getvar(self):
-        """Get variance for each layer"""
-
-        v = []
-        for i in self.bands:
-            n = self.count[i]
-            v.append((self.sum2[i] - (self.sum[i] ** 2.0) / n) / n)
-        return v
-
-    def _getstddev(self):
-        """Get standard deviation for each layer"""
-
-        v = []
-        for i in self.bands:
-            v.append(math.sqrt(self.var[i]))
-        return v
+    @cached_property
+    def stddev(self) -> list[float]:
+        """Standard deviation for each band in the image."""
+        return [math.sqrt(self.var[i]) for i in self.bands]
 
 
 Global = Stat  # compatibility
diff --git a/src/PIL/ImageTk.py b/src/PIL/ImageTk.py
index bf98eb2c8..bf29fdba5 100644
--- a/src/PIL/ImageTk.py
+++ b/src/PIL/ImageTk.py
@@ -24,51 +24,45 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import tkinter
 from io import BytesIO
+from typing import TYPE_CHECKING, Any, cast
 
-from . import Image
+from . import Image, ImageFile
+
+if TYPE_CHECKING:
+    from ._typing import CapsuleType
 
 # --------------------------------------------------------------------
 # Check for Tkinter interface hooks
 
-_pilbitmap_ok = None
 
-
-def _pilbitmap_check():
-    global _pilbitmap_ok
-    if _pilbitmap_ok is None:
-        try:
-            im = Image.new("1", (1, 1))
-            tkinter.BitmapImage(data=f"PIL:{im.im.id}")
-            _pilbitmap_ok = 1
-        except tkinter.TclError:
-            _pilbitmap_ok = 0
-    return _pilbitmap_ok
-
-
-def _get_image_from_kw(kw):
+def _get_image_from_kw(kw: dict[str, Any]) -> ImageFile.ImageFile | None:
     source = None
     if "file" in kw:
         source = kw.pop("file")
     elif "data" in kw:
         source = BytesIO(kw.pop("data"))
-    if source:
-        return Image.open(source)
+    if not source:
+        return None
+    return Image.open(source)
 
 
-def _pyimagingtkcall(command, photo, id):
+def _pyimagingtkcall(
+    command: str, photo: PhotoImage | tkinter.PhotoImage, ptr: CapsuleType
+) -> None:
     tk = photo.tk
     try:
-        tk.call(command, photo, id)
+        tk.call(command, photo, repr(ptr))
     except tkinter.TclError:
         # activate Tkinter hook
         # may raise an error if it cannot attach to Tkinter
         from . import _imagingtk
 
         _imagingtk.tkinit(tk.interpaddr())
-        tk.call(command, photo, id)
+        tk.call(command, photo, repr(ptr))
 
 
 # --------------------------------------------------------------------
@@ -95,27 +89,36 @@ class PhotoImage:
                    image file).
     """
 
-    def __init__(self, image=None, size=None, **kw):
+    def __init__(
+        self,
+        image: Image.Image | str | None = None,
+        size: tuple[int, int] | None = None,
+        **kw: Any,
+    ) -> None:
         # Tk compatibility: file or data
         if image is None:
             image = _get_image_from_kw(kw)
 
-        if hasattr(image, "mode") and hasattr(image, "size"):
+        if image is None:
+            msg = "Image is required"
+            raise ValueError(msg)
+        elif isinstance(image, str):
+            mode = image
+            image = None
+
+            if size is None:
+                msg = "If first argument is mode, size is required"
+                raise ValueError(msg)
+        else:
             # got an image instead of a mode
             mode = image.mode
             if mode == "P":
                 # palette mapped data
                 image.apply_transparency()
                 image.load()
-                try:
-                    mode = image.palette.mode
-                except AttributeError:
-                    mode = "RGB"  # default
+                mode = image.palette.mode if image.palette else "RGB"
             size = image.size
             kw["width"], kw["height"] = size
-        else:
-            mode = image
-            image = None
 
         if mode not in ["1", "L", "RGB", "RGBA"]:
             mode = Image.getmodebase(mode)
@@ -127,15 +130,18 @@ class PhotoImage:
         if image:
             self.paste(image)
 
-    def __del__(self):
-        name = self.__photo.name
+    def __del__(self) -> None:
+        try:
+            name = self.__photo.name
+        except AttributeError:
+            return
         self.__photo.name = None
         try:
             self.__photo.tk.call("image", "delete", name)
         except Exception:
             pass  # ignore internal errors
 
-    def __str__(self):
+    def __str__(self) -> str:
         """
         Get the Tkinter photo image identifier.  This method is automatically
         called by Tkinter whenever a PhotoImage object is passed to a Tkinter
@@ -145,7 +151,7 @@ class PhotoImage:
         """
         return str(self.__photo)
 
-    def width(self):
+    def width(self) -> int:
         """
         Get the width of the image.
 
@@ -153,7 +159,7 @@ class PhotoImage:
         """
         return self.__size[0]
 
-    def height(self):
+    def height(self) -> int:
         """
         Get the height of the image.
 
@@ -161,7 +167,7 @@ class PhotoImage:
         """
         return self.__size[1]
 
-    def paste(self, im):
+    def paste(self, im: Image.Image) -> None:
         """
         Paste a PIL image into the photo image.  Note that this can
         be very slow if the photo image is displayed.
@@ -171,15 +177,14 @@ class PhotoImage:
                    the bitmap image.
         """
         # convert to blittable
-        im.load()
+        ptr = im.getim()
         image = im.im
-        if image.isblock() and im.mode == self.__mode:
-            block = image
-        else:
-            block = image.new_block(self.__mode, im.size)
+        if not image.isblock() or im.mode != self.__mode:
+            block = Image.core.new_block(self.__mode, im.size)
             image.convert2(block, image)  # convert directly between buffers
+            ptr = block.ptr
 
-        _pyimagingtkcall("PyImagingPhoto", self.__photo, block.id)
+        _pyimagingtkcall("PyImagingPhoto", self.__photo, ptr)
 
 
 # --------------------------------------------------------------------
@@ -200,33 +205,31 @@ class BitmapImage:
     :param image: A PIL image.
     """
 
-    def __init__(self, image=None, **kw):
+    def __init__(self, image: Image.Image | None = None, **kw: Any) -> None:
         # Tk compatibility: file or data
         if image is None:
             image = _get_image_from_kw(kw)
 
+        if image is None:
+            msg = "Image is required"
+            raise ValueError(msg)
         self.__mode = image.mode
         self.__size = image.size
 
-        if _pilbitmap_check():
-            # fast way (requires the pilbitmap booster patch)
-            image.load()
-            kw["data"] = f"PIL:{image.im.id}"
-            self.__im = image  # must keep a reference
-        else:
-            # slow but safe way
-            kw["data"] = image.tobitmap()
-        self.__photo = tkinter.BitmapImage(**kw)
+        self.__photo = tkinter.BitmapImage(data=image.tobitmap(), **kw)
 
-    def __del__(self):
-        name = self.__photo.name
+    def __del__(self) -> None:
+        try:
+            name = self.__photo.name
+        except AttributeError:
+            return
         self.__photo.name = None
         try:
             self.__photo.tk.call("image", "delete", name)
         except Exception:
             pass  # ignore internal errors
 
-    def width(self):
+    def width(self) -> int:
         """
         Get the width of the image.
 
@@ -234,7 +237,7 @@ class BitmapImage:
         """
         return self.__size[0]
 
-    def height(self):
+    def height(self) -> int:
         """
         Get the height of the image.
 
@@ -242,7 +245,7 @@ class BitmapImage:
         """
         return self.__size[1]
 
-    def __str__(self):
+    def __str__(self) -> str:
         """
         Get the Tkinter bitmap image identifier.  This method is automatically
         called by Tkinter whenever a BitmapImage object is passed to a Tkinter
@@ -253,28 +256,32 @@ class BitmapImage:
         return str(self.__photo)
 
 
-def getimage(photo):
+def getimage(photo: PhotoImage) -> Image.Image:
     """Copies the contents of a PhotoImage to a PIL image memory."""
     im = Image.new("RGBA", (photo.width(), photo.height()))
-    block = im.im
 
-    _pyimagingtkcall("PyImagingPhotoGet", photo, block.id)
+    _pyimagingtkcall("PyImagingPhotoGet", photo, im.getim())
 
     return im
 
 
-def _show(image, title):
+def _show(image: Image.Image, title: str | None) -> None:
     """Helper for the Image.show method."""
 
     class UI(tkinter.Label):
-        def __init__(self, master, im):
+        def __init__(self, master: tkinter.Toplevel, im: Image.Image) -> None:
+            self.image: BitmapImage | PhotoImage
             if im.mode == "1":
                 self.image = BitmapImage(im, foreground="white", master=master)
             else:
                 self.image = PhotoImage(im, master=master)
-            super().__init__(master, image=self.image, bg="black", bd=0)
+            if TYPE_CHECKING:
+                image = cast(tkinter._Image, self.image)
+            else:
+                image = self.image
+            super().__init__(master, image=image, bg="black", bd=0)
 
-    if not tkinter._default_root:
+    if not getattr(tkinter, "_default_root"):
         msg = "tkinter not initialized"
         raise OSError(msg)
     top = tkinter.Toplevel()
diff --git a/src/PIL/ImageTransform.py b/src/PIL/ImageTransform.py
index 7881f0d26..a3d8f441a 100644
--- a/src/PIL/ImageTransform.py
+++ b/src/PIL/ImageTransform.py
@@ -12,18 +12,32 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
+from collections.abc import Sequence
+from typing import Any
 
 from . import Image
 
 
 class Transform(Image.ImageTransformHandler):
-    def __init__(self, data):
+    """Base class for other transforms defined in :py:mod:`~PIL.ImageTransform`."""
+
+    method: Image.Transform
+
+    def __init__(self, data: Sequence[Any]) -> None:
         self.data = data
 
-    def getdata(self):
+    def getdata(self) -> tuple[Image.Transform, Sequence[int]]:
         return self.method, self.data
 
-    def transform(self, size, image, **options):
+    def transform(
+        self,
+        size: tuple[int, int],
+        image: Image.Image,
+        **options: Any,
+    ) -> Image.Image:
+        """Perform the transform. Called from :py:meth:`.Image.transform`."""
         # can be overridden
         method, data = self.getdata()
         return image.transform(size, method, data, **options)
@@ -41,7 +55,7 @@ class AffineTransform(Transform):
     This function can be used to scale, translate, rotate, and shear the
     original image.
 
-    See :py:meth:`~PIL.Image.Image.transform`
+    See :py:meth:`.Image.transform`
 
     :param matrix: A 6-tuple (a, b, c, d, e, f) containing the first two rows
         from an affine transform matrix.
@@ -50,6 +64,26 @@ class AffineTransform(Transform):
     method = Image.Transform.AFFINE
 
 
+class PerspectiveTransform(Transform):
+    """
+    Define a perspective image transform.
+
+    This function takes an 8-tuple (a, b, c, d, e, f, g, h). For each pixel
+    (x, y) in the output image, the new value is taken from a position
+    ((a x + b y + c) / (g x + h y + 1), (d x + e y + f) / (g x + h y + 1)) in
+    the input image, rounded to nearest pixel.
+
+    This function can be used to scale, translate, rotate, and shear the
+    original image.
+
+    See :py:meth:`.Image.transform`
+
+    :param matrix: An 8-tuple (a, b, c, d, e, f, g, h).
+    """
+
+    method = Image.Transform.PERSPECTIVE
+
+
 class ExtentTransform(Transform):
     """
     Define a transform to extract a subregion from an image.
@@ -63,7 +97,7 @@ class ExtentTransform(Transform):
     rectangle in the current image. It is slightly slower than crop, but about
     as fast as a corresponding resize operation.
 
-    See :py:meth:`~PIL.Image.Image.transform`
+    See :py:meth:`.Image.transform`
 
     :param bbox: A 4-tuple (x0, y0, x1, y1) which specifies two points in the
         input image's coordinate system. See :ref:`coordinate-system`.
@@ -79,7 +113,7 @@ class QuadTransform(Transform):
     Maps a quadrilateral (a region defined by four corners) from the image to a
     rectangle of the given size.
 
-    See :py:meth:`~PIL.Image.Image.transform`
+    See :py:meth:`.Image.transform`
 
     :param xy: An 8-tuple (x0, y0, x1, y1, x2, y2, x3, y3) which contain the
         upper left, lower left, lower right, and upper right corner of the
@@ -94,7 +128,7 @@ class MeshTransform(Transform):
     Define a mesh image transform.  A mesh transform consists of one or more
     individual quad transforms.
 
-    See :py:meth:`~PIL.Image.Image.transform`
+    See :py:meth:`.Image.transform`
 
     :param data: A list of (bbox, quad) tuples.
     """
diff --git a/src/PIL/ImageWin.py b/src/PIL/ImageWin.py
index ca9b14c8a..98c28f29f 100644
--- a/src/PIL/ImageWin.py
+++ b/src/PIL/ImageWin.py
@@ -16,6 +16,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 from . import Image
 
@@ -27,10 +28,10 @@ class HDC:
     methods.
     """
 
-    def __init__(self, dc):
+    def __init__(self, dc: int) -> None:
         self.dc = dc
 
-    def __int__(self):
+    def __int__(self) -> int:
         return self.dc
 
 
@@ -41,10 +42,10 @@ class HWND:
     methods, instead of a DC.
     """
 
-    def __init__(self, wnd):
+    def __init__(self, wnd: int) -> None:
         self.wnd = wnd
 
-    def __int__(self):
+    def __int__(self) -> int:
         return self.wnd
 
 
@@ -54,9 +55,9 @@ class Dib:
     "L", "P", or "RGB".
 
     If the display requires a palette, this constructor creates a suitable
-    palette and associates it with the image. For an "L" image, 128 greylevels
+    palette and associates it with the image. For an "L" image, 128 graylevels
     are allocated. For an "RGB" image, a 6x6x6 colour cube is used, together
-    with 20 greylevels.
+    with 20 graylevels.
 
     To make sure that palettes work properly under Windows, you must call the
     ``palette`` method upon certain events from Windows.
@@ -68,22 +69,28 @@ class Dib:
                  defines the size of the image.
     """
 
-    def __init__(self, image, size=None):
-        if hasattr(image, "mode") and hasattr(image, "size"):
+    def __init__(
+        self, image: Image.Image | str, size: tuple[int, int] | None = None
+    ) -> None:
+        if isinstance(image, str):
+            mode = image
+            image = ""
+            if size is None:
+                msg = "If first argument is mode, size is required"
+                raise ValueError(msg)
+        else:
             mode = image.mode
             size = image.size
-        else:
-            mode = image
-            image = None
         if mode not in ["1", "L", "P", "RGB"]:
             mode = Image.getmodebase(mode)
         self.image = Image.core.display(mode, size)
         self.mode = mode
         self.size = size
         if image:
+            assert not isinstance(image, str)
             self.paste(image)
 
-    def expose(self, handle):
+    def expose(self, handle: int | HDC | HWND) -> None:
         """
         Copy the bitmap contents to a device context.
 
@@ -91,17 +98,22 @@ class Dib:
                        HDC or HWND instance.  In PythonWin, you can use
                        ``CDC.GetHandleAttrib()`` to get a suitable handle.
         """
+        handle_int = int(handle)
         if isinstance(handle, HWND):
-            dc = self.image.getdc(handle)
+            dc = self.image.getdc(handle_int)
             try:
-                result = self.image.expose(dc)
+                self.image.expose(dc)
             finally:
-                self.image.releasedc(handle, dc)
+                self.image.releasedc(handle_int, dc)
         else:
-            result = self.image.expose(handle)
-        return result
+            self.image.expose(handle_int)
 
-    def draw(self, handle, dst, src=None):
+    def draw(
+        self,
+        handle: int | HDC | HWND,
+        dst: tuple[int, int, int, int],
+        src: tuple[int, int, int, int] | None = None,
+    ) -> None:
         """
         Same as expose, but allows you to specify where to draw the image, and
         what part of it to draw.
@@ -111,19 +123,19 @@ class Dib:
         the destination have different sizes, the image is resized as
         necessary.
         """
-        if not src:
+        if src is None:
             src = (0, 0) + self.size
+        handle_int = int(handle)
         if isinstance(handle, HWND):
-            dc = self.image.getdc(handle)
+            dc = self.image.getdc(handle_int)
             try:
-                result = self.image.draw(dc, dst, src)
+                self.image.draw(dc, dst, src)
             finally:
-                self.image.releasedc(handle, dc)
+                self.image.releasedc(handle_int, dc)
         else:
-            result = self.image.draw(handle, dst, src)
-        return result
+            self.image.draw(handle_int, dst, src)
 
-    def query_palette(self, handle):
+    def query_palette(self, handle: int | HDC | HWND) -> int:
         """
         Installs the palette associated with the image in the given device
         context.
@@ -135,20 +147,23 @@ class Dib:
 
         :param handle: Device context (HDC), cast to a Python integer, or an
                        HDC or HWND instance.
-        :return: A true value if one or more entries were changed (this
-                 indicates that the image should be redrawn).
+        :return: The number of entries that were changed (if one or more entries,
+                 this indicates that the image should be redrawn).
         """
+        handle_int = int(handle)
         if isinstance(handle, HWND):
-            handle = self.image.getdc(handle)
+            handle = self.image.getdc(handle_int)
             try:
                 result = self.image.query_palette(handle)
             finally:
                 self.image.releasedc(handle, handle)
         else:
-            result = self.image.query_palette(handle)
+            result = self.image.query_palette(handle_int)
         return result
 
-    def paste(self, im, box=None):
+    def paste(
+        self, im: Image.Image, box: tuple[int, int, int, int] | None = None
+    ) -> None:
         """
         Paste a PIL image into the bitmap image.
 
@@ -168,16 +183,16 @@ class Dib:
         else:
             self.image.paste(im.im)
 
-    def frombytes(self, buffer):
+    def frombytes(self, buffer: bytes) -> None:
         """
         Load display memory contents from byte data.
 
         :param buffer: A buffer containing display data (usually
                        data returned from :py:func:`~PIL.ImageWin.Dib.tobytes`)
         """
-        return self.image.frombytes(buffer)
+        self.image.frombytes(buffer)
 
-    def tobytes(self):
+    def tobytes(self) -> bytes:
         """
         Copy display memory contents to bytes object.
 
@@ -189,42 +204,44 @@ class Dib:
 class Window:
     """Create a Window with the given title size."""
 
-    def __init__(self, title="PIL", width=None, height=None):
+    def __init__(
+        self, title: str = "PIL", width: int | None = None, height: int | None = None
+    ) -> None:
         self.hwnd = Image.core.createwindow(
             title, self.__dispatcher, width or 0, height or 0
         )
 
-    def __dispatcher(self, action, *args):
-        return getattr(self, "ui_handle_" + action)(*args)
+    def __dispatcher(self, action: str, *args: int) -> None:
+        getattr(self, f"ui_handle_{action}")(*args)
 
-    def ui_handle_clear(self, dc, x0, y0, x1, y1):
+    def ui_handle_clear(self, dc: int, x0: int, y0: int, x1: int, y1: int) -> None:
         pass
 
-    def ui_handle_damage(self, x0, y0, x1, y1):
+    def ui_handle_damage(self, x0: int, y0: int, x1: int, y1: int) -> None:
         pass
 
-    def ui_handle_destroy(self):
+    def ui_handle_destroy(self) -> None:
         pass
 
-    def ui_handle_repair(self, dc, x0, y0, x1, y1):
+    def ui_handle_repair(self, dc: int, x0: int, y0: int, x1: int, y1: int) -> None:
         pass
 
-    def ui_handle_resize(self, width, height):
+    def ui_handle_resize(self, width: int, height: int) -> None:
         pass
 
-    def mainloop(self):
+    def mainloop(self) -> None:
         Image.core.eventloop()
 
 
 class ImageWindow(Window):
     """Create an image window which displays the given image."""
 
-    def __init__(self, image, title="PIL"):
+    def __init__(self, image: Image.Image | Dib, title: str = "PIL") -> None:
         if not isinstance(image, Dib):
             image = Dib(image)
         self.image = image
         width, height = image.size
         super().__init__(title, width=width, height=height)
 
-    def ui_handle_repair(self, dc, x0, y0, x1, y1):
+    def ui_handle_repair(self, dc: int, x0: int, y0: int, x1: int, y1: int) -> None:
         self.image.draw(dc, (x0, y0, x1, y1))
diff --git a/src/PIL/ImtImagePlugin.py b/src/PIL/ImtImagePlugin.py
index ac267457b..594c56513 100644
--- a/src/PIL/ImtImagePlugin.py
+++ b/src/PIL/ImtImagePlugin.py
@@ -13,7 +13,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 import re
 
@@ -33,10 +33,12 @@ class ImtImageFile(ImageFile.ImageFile):
     format = "IMT"
     format_description = "IM Tools"
 
-    def _open(self):
+    def _open(self) -> None:
         # Quick rejection: if there's not a LF among the first
         # 100 bytes, this is (probably) not a text header.
 
+        assert self.fp is not None
+
         buffer = self.fp.read(100)
         if b"\n" not in buffer:
             msg = "not an IM file"
@@ -56,7 +58,7 @@ class ImtImageFile(ImageFile.ImageFile):
             if s == b"\x0C":
                 # image data begins
                 self.tile = [
-                    (
+                    ImageFile._Tile(
                         "raw",
                         (0, 0) + self.size,
                         self.fp.tell() - len(buffer),
@@ -89,7 +91,7 @@ class ImtImageFile(ImageFile.ImageFile):
                     ysize = int(v)
                     self._size = xsize, ysize
                 elif k == b"pixel" and v == b"n8":
-                    self.mode = "L"
+                    self._mode = "L"
 
 
 #
diff --git a/src/PIL/IptcImagePlugin.py b/src/PIL/IptcImagePlugin.py
index 4c47b55c1..60ab7c83f 100644
--- a/src/PIL/IptcImagePlugin.py
+++ b/src/PIL/IptcImagePlugin.py
@@ -14,31 +14,51 @@
 #
 # See the README file for information on usage and redistribution.
 #
-import os
-import tempfile
+from __future__ import annotations
+
+from collections.abc import Sequence
+from io import BytesIO
+from typing import cast
 
 from . import Image, ImageFile
-from ._binary import i8
 from ._binary import i16be as i16
 from ._binary import i32be as i32
-from ._binary import o8
+from ._deprecate import deprecate
 
 COMPRESSION = {1: "raw", 5: "jpeg"}
 
-PAD = o8(0) * 4
+
+def __getattr__(name: str) -> bytes:
+    if name == "PAD":
+        deprecate("IptcImagePlugin.PAD", 12)
+        return b"\0\0\0\0"
+    msg = f"module '{__name__}' has no attribute '{name}'"
+    raise AttributeError(msg)
 
 
 #
 # Helpers
 
 
-def i(c):
-    return i32((PAD + c)[-4:])
+def _i(c: bytes) -> int:
+    return i32((b"\0\0\0\0" + c)[-4:])
 
 
-def dump(c):
+def _i8(c: int | bytes) -> int:
+    return c if isinstance(c, int) else c[0]
+
+
+def i(c: bytes) -> int:
+    """.. deprecated:: 10.2.0"""
+    deprecate("IptcImagePlugin.i", 12)
+    return _i(c)
+
+
+def dump(c: Sequence[int | bytes]) -> None:
+    """.. deprecated:: 10.2.0"""
+    deprecate("IptcImagePlugin.dump", 12)
     for i in c:
-        print("%02x" % i8(i), end=" ")
+        print(f"{_i8(i):02x}", end=" ")
     print()
 
 
@@ -51,20 +71,20 @@ class IptcImageFile(ImageFile.ImageFile):
     format = "IPTC"
     format_description = "IPTC/NAA"
 
-    def getint(self, key):
-        return i(self.info[key])
+    def getint(self, key: tuple[int, int]) -> int:
+        return _i(self.info[key])
 
-    def field(self):
+    def field(self) -> tuple[tuple[int, int] | None, int]:
         #
         # get a IPTC field header
         s = self.fp.read(5)
-        if not len(s):
+        if not s.strip(b"\x00"):
             return None, 0
 
         tag = s[1], s[2]
 
         # syntax
-        if s[0] != 0x1C or tag[0] < 1 or tag[0] > 9:
+        if s[0] != 0x1C or tag[0] not in [1, 2, 3, 4, 5, 6, 7, 8, 9, 240]:
             msg = "invalid IPTC/NAA file"
             raise SyntaxError(msg)
 
@@ -76,13 +96,13 @@ class IptcImageFile(ImageFile.ImageFile):
         elif size == 128:
             size = 0
         elif size > 128:
-            size = i(self.fp.read(size - 128))
+            size = _i(self.fp.read(size - 128))
         else:
             size = i16(s, 3)
 
         return tag, size
 
-    def _open(self):
+    def _open(self) -> None:
         # load descriptive fields
         while True:
             offset = self.fp.tell()
@@ -102,18 +122,18 @@ class IptcImageFile(ImageFile.ImageFile):
                 self.info[tag] = tagdata
 
         # mode
-        layers = i8(self.info[(3, 60)][0])
-        component = i8(self.info[(3, 60)][1])
+        layers = self.info[(3, 60)][0]
+        component = self.info[(3, 60)][1]
         if (3, 65) in self.info:
-            id = i8(self.info[(3, 65)][0]) - 1
+            id = self.info[(3, 65)][0] - 1
         else:
             id = 0
         if layers == 1 and not component:
-            self.mode = "L"
+            self._mode = "L"
         elif layers == 3 and component:
-            self.mode = "RGB"[id]
+            self._mode = "RGB"[id]
         elif layers == 4 and component:
-            self.mode = "CMYK"[id]
+            self._mode = "CMYK"[id]
 
         # size
         self._size = self.getint((3, 20)), self.getint((3, 30))
@@ -128,26 +148,23 @@ class IptcImageFile(ImageFile.ImageFile):
         # tile
         if tag == (8, 10):
             self.tile = [
-                ("iptc", (compression, offset), (0, 0, self.size[0], self.size[1]))
+                ImageFile._Tile("iptc", (0, 0) + self.size, offset, compression)
             ]
 
-    def load(self):
+    def load(self) -> Image.core.PixelAccess | None:
         if len(self.tile) != 1 or self.tile[0][0] != "iptc":
             return ImageFile.ImageFile.load(self)
 
-        type, tile, box = self.tile[0]
-
-        encoding, offset = tile
+        offset, compression = self.tile[0][2:]
 
         self.fp.seek(offset)
 
         # Copy image data to temporary file
-        o_fd, outfile = tempfile.mkstemp(text=False)
-        o = os.fdopen(o_fd)
-        if encoding == "raw":
+        o = BytesIO()
+        if compression == "raw":
             # To simplify access to the extracted file,
             # prepend a PPM header
-            o.write("P5\n%d %d\n255\n" % self.size)
+            o.write(b"P5\n%d %d\n255\n" % self.size)
         while True:
             type, size = self.field()
             if type != (8, 10):
@@ -158,17 +175,11 @@ class IptcImageFile(ImageFile.ImageFile):
                     break
                 o.write(s)
                 size -= len(s)
-        o.close()
 
-        try:
-            with Image.open(outfile) as _im:
-                _im.load()
-                self.im = _im.im
-        finally:
-            try:
-                os.unlink(outfile)
-            except OSError:
-                pass
+        with Image.open(o) as _im:
+            _im.load()
+            self.im = _im.im
+        return None
 
 
 Image.register_open(IptcImageFile.format, IptcImageFile)
@@ -176,7 +187,9 @@ Image.register_open(IptcImageFile.format, IptcImageFile)
 Image.register_extension(IptcImageFile.format, ".iim")
 
 
-def getiptcinfo(im):
+def getiptcinfo(
+    im: ImageFile.ImageFile,
+) -> dict[tuple[int, int], bytes | list[bytes]] | None:
     """
     Get IPTC information from TIFF, JPEG, or IPTC file.
 
@@ -184,15 +197,17 @@ def getiptcinfo(im):
     :returns: A dictionary containing IPTC information, or None if
         no IPTC information block was found.
     """
-    import io
-
     from . import JpegImagePlugin, TiffImagePlugin
 
     data = None
 
+    info: dict[tuple[int, int], bytes | list[bytes]] = {}
     if isinstance(im, IptcImageFile):
         # return info dictionary right away
-        return im.info
+        for k, v in im.info.items():
+            if isinstance(k, tuple):
+                info[k] = v
+        return info
 
     elif isinstance(im, JpegImagePlugin.JpegImageFile):
         # extract the IPTC/NAA resource
@@ -204,8 +219,8 @@ def getiptcinfo(im):
         # get raw data from the IPTC/NAA tag (PhotoShop tags the data
         # as 4-byte integers, so we cannot use the get method...)
         try:
-            data = im.tag.tagdata[TiffImagePlugin.IPTC_NAA_CHUNK]
-        except (AttributeError, KeyError):
+            data = im.tag_v2[TiffImagePlugin.IPTC_NAA_CHUNK]
+        except KeyError:
             pass
 
     if data is None:
@@ -215,16 +230,20 @@ def getiptcinfo(im):
     class FakeImage:
         pass
 
-    im = FakeImage()
-    im.__class__ = IptcImageFile
+    fake_im = FakeImage()
+    fake_im.__class__ = IptcImageFile  # type: ignore[assignment]
+    iptc_im = cast(IptcImageFile, fake_im)
 
     # parse the IPTC information chunk
-    im.info = {}
-    im.fp = io.BytesIO(data)
+    iptc_im.info = {}
+    iptc_im.fp = BytesIO(data)
 
     try:
-        im._open()
+        iptc_im._open()
     except (IndexError, KeyError):
         pass  # expected failure
 
-    return im.info
+    for k, v in iptc_im.info.items():
+        if isinstance(k, tuple):
+            info[k] = v
+    return info
diff --git a/src/PIL/Jpeg2KImagePlugin.py b/src/PIL/Jpeg2KImagePlugin.py
index 9309768ba..b6ebd562b 100644
--- a/src/PIL/Jpeg2KImagePlugin.py
+++ b/src/PIL/Jpeg2KImagePlugin.py
@@ -13,11 +13,15 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
 import io
 import os
 import struct
+from collections.abc import Callable
+from typing import IO, cast
 
-from . import Image, ImageFile, _binary
+from . import Image, ImageFile, ImagePalette, _binary
 
 
 class BoxReader:
@@ -26,13 +30,13 @@ class BoxReader:
     and to easily step into and read sub-boxes.
     """
 
-    def __init__(self, fp, length=-1):
+    def __init__(self, fp: IO[bytes], length: int = -1) -> None:
         self.fp = fp
         self.has_length = length >= 0
         self.length = length
         self.remaining_in_box = -1
 
-    def _can_read(self, num_bytes):
+    def _can_read(self, num_bytes: int) -> bool:
         if self.has_length and self.fp.tell() + num_bytes > self.length:
             # Outside box: ensure we don't read past the known file length
             return False
@@ -42,7 +46,7 @@ class BoxReader:
         else:
             return True  # No length known, just read
 
-    def _read_bytes(self, num_bytes):
+    def _read_bytes(self, num_bytes: int) -> bytes:
         if not self._can_read(num_bytes):
             msg = "Not enough data in header"
             raise SyntaxError(msg)
@@ -56,32 +60,32 @@ class BoxReader:
             self.remaining_in_box -= num_bytes
         return data
 
-    def read_fields(self, field_format):
+    def read_fields(self, field_format: str) -> tuple[int | bytes, ...]:
         size = struct.calcsize(field_format)
         data = self._read_bytes(size)
         return struct.unpack(field_format, data)
 
-    def read_boxes(self):
+    def read_boxes(self) -> BoxReader:
         size = self.remaining_in_box
         data = self._read_bytes(size)
         return BoxReader(io.BytesIO(data), size)
 
-    def has_next_box(self):
+    def has_next_box(self) -> bool:
         if self.has_length:
             return self.fp.tell() + self.remaining_in_box < self.length
         else:
             return True
 
-    def next_box_type(self):
+    def next_box_type(self) -> bytes:
         # Skip the rest of the box if it has not been read
         if self.remaining_in_box > 0:
             self.fp.seek(self.remaining_in_box, os.SEEK_CUR)
         self.remaining_in_box = -1
 
         # Read the length and type of the next box
-        lbox, tbox = self.read_fields(">I4s")
+        lbox, tbox = cast(tuple[int, bytes], self.read_fields(">I4s"))
         if lbox == 1:
-            lbox = self.read_fields(">Q")[0]
+            lbox = cast(int, self.read_fields(">Q")[0])
             hlen = 16
         else:
             hlen = 8
@@ -94,7 +98,7 @@ class BoxReader:
         return tbox
 
 
-def _parse_codestream(fp):
+def _parse_codestream(fp: IO[bytes]) -> tuple[tuple[int, int], str]:
     """Parse the JPEG 2000 codestream to extract the size and component
     count from the SIZ marker segment, returning a PIL (size, mode) tuple."""
 
@@ -104,15 +108,11 @@ def _parse_codestream(fp):
     lsiz, rsiz, xsiz, ysiz, xosiz, yosiz, _, _, _, _, csiz = struct.unpack_from(
         ">HHIIIIIIIIH", siz
     )
-    ssiz = [None] * csiz
-    xrsiz = [None] * csiz
-    yrsiz = [None] * csiz
-    for i in range(csiz):
-        ssiz[i], xrsiz[i], yrsiz[i] = struct.unpack_from(">BBB", siz, 36 + 3 * i)
 
     size = (xsiz - xosiz, ysiz - yosiz)
     if csiz == 1:
-        if (yrsiz[0] & 0x7F) > 8:
+        ssiz = struct.unpack_from(">B", siz, 38)
+        if (ssiz[0] & 0x7F) + 1 > 8:
             mode = "I;16"
         else:
             mode = "L"
@@ -123,20 +123,30 @@ def _parse_codestream(fp):
     elif csiz == 4:
         mode = "RGBA"
     else:
-        mode = None
+        msg = "unable to determine J2K image mode"
+        raise SyntaxError(msg)
 
     return size, mode
 
 
-def _res_to_dpi(num, denom, exp):
+def _res_to_dpi(num: int, denom: int, exp: int) -> float | None:
     """Convert JPEG2000's (numerator, denominator, exponent-base-10) resolution,
     calculated as (num / denom) * 10^exp and stored in dots per meter,
     to floating-point dots per inch."""
-    if denom != 0:
-        return (254 * num * (10**exp)) / (10000 * denom)
+    if denom == 0:
+        return None
+    return (254 * num * (10**exp)) / (10000 * denom)
 
 
-def _parse_jp2_header(fp):
+def _parse_jp2_header(
+    fp: IO[bytes],
+) -> tuple[
+    tuple[int, int],
+    str,
+    str | None,
+    tuple[float, float] | None,
+    ImagePalette.ImagePalette | None,
+]:
     """Parse the JP2 header box to extract size, component count,
     color space information, and optionally DPI information,
     returning a (size, mode, mimetype, dpi) tuple."""
@@ -154,18 +164,23 @@ def _parse_jp2_header(fp):
         elif tbox == b"ftyp":
             if reader.read_fields(">4s")[0] == b"jpx ":
                 mimetype = "image/jpx"
+    assert header is not None
 
     size = None
     mode = None
     bpc = None
     nc = None
     dpi = None  # 2-tuple of DPI info, or None
+    palette = None
 
     while header.has_next_box():
         tbox = header.next_box_type()
 
         if tbox == b"ihdr":
             height, width, nc, bpc = header.read_fields(">IIHB")
+            assert isinstance(height, int)
+            assert isinstance(width, int)
+            assert isinstance(bpc, int)
             size = (width, height)
             if nc == 1 and (bpc & 0x7F) > 8:
                 mode = "I;16"
@@ -177,12 +192,40 @@ def _parse_jp2_header(fp):
                 mode = "RGB"
             elif nc == 4:
                 mode = "RGBA"
+        elif tbox == b"colr" and nc == 4:
+            meth, _, _, enumcs = header.read_fields(">BBBI")
+            if meth == 1 and enumcs == 12:
+                mode = "CMYK"
+        elif tbox == b"pclr" and mode in ("L", "LA"):
+            ne, npc = header.read_fields(">HB")
+            assert isinstance(ne, int)
+            assert isinstance(npc, int)
+            max_bitdepth = 0
+            for bitdepth in header.read_fields(">" + ("B" * npc)):
+                assert isinstance(bitdepth, int)
+                if bitdepth > max_bitdepth:
+                    max_bitdepth = bitdepth
+            if max_bitdepth <= 8:
+                palette = ImagePalette.ImagePalette("RGBA" if npc == 4 else "RGB")
+                for i in range(ne):
+                    color: list[int] = []
+                    for value in header.read_fields(">" + ("B" * npc)):
+                        assert isinstance(value, int)
+                        color.append(value)
+                    palette.getcolor(tuple(color))
+                mode = "P" if mode == "L" else "PA"
         elif tbox == b"res ":
             res = header.read_boxes()
             while res.has_next_box():
                 tres = res.next_box_type()
                 if tres == b"resc":
                     vrcn, vrcd, hrcn, hrcd, vrce, hrce = res.read_fields(">HHHHBB")
+                    assert isinstance(vrcn, int)
+                    assert isinstance(vrcd, int)
+                    assert isinstance(hrcn, int)
+                    assert isinstance(hrcd, int)
+                    assert isinstance(vrce, int)
+                    assert isinstance(hrce, int)
                     hres = _res_to_dpi(hrcn, hrcd, hrce)
                     vres = _res_to_dpi(vrcn, vrcd, vrce)
                     if hres is not None and vres is not None:
@@ -193,7 +236,7 @@ def _parse_jp2_header(fp):
         msg = "Malformed JP2 header"
         raise SyntaxError(msg)
 
-    return size, mode, mimetype, dpi
+    return size, mode, mimetype, dpi, palette
 
 
 ##
@@ -204,18 +247,18 @@ class Jpeg2KImageFile(ImageFile.ImageFile):
     format = "JPEG2000"
     format_description = "JPEG 2000 (ISO 15444)"
 
-    def _open(self):
+    def _open(self) -> None:
         sig = self.fp.read(4)
         if sig == b"\xff\x4f\xff\x51":
             self.codec = "j2k"
-            self._size, self.mode = _parse_codestream(self.fp)
+            self._size, self._mode = _parse_codestream(self.fp)
         else:
             sig = sig + self.fp.read(8)
 
             if sig == b"\x00\x00\x00\x0cjP  \x0d\x0a\x87\x0a":
                 self.codec = "jp2"
                 header = _parse_jp2_header(self.fp)
-                self._size, self.mode, self.custom_mimetype, dpi = header
+                self._size, self._mode, self.custom_mimetype, dpi, self.palette = header
                 if dpi is not None:
                     self.info["dpi"] = dpi
                 if self.fp.read(12).endswith(b"jp2c\xff\x4f\xff\x51"):
@@ -224,10 +267,6 @@ class Jpeg2KImageFile(ImageFile.ImageFile):
                 msg = "not a JPEG 2000 file"
                 raise SyntaxError(msg)
 
-        if self.size is None or self.mode is None:
-            msg = "unable to determine size/mode"
-            raise SyntaxError(msg)
-
         self._reduce = 0
         self.layers = 0
 
@@ -248,7 +287,7 @@ class Jpeg2KImageFile(ImageFile.ImageFile):
                 length = -1
 
         self.tile = [
-            (
+            ImageFile._Tile(
                 "jpeg2k",
                 (0, 0) + self.size,
                 0,
@@ -256,7 +295,7 @@ class Jpeg2KImageFile(ImageFile.ImageFile):
             )
         ]
 
-    def _parse_comment(self):
+    def _parse_comment(self) -> None:
         hdr = self.fp.read(2)
         length = _binary.i16be(hdr)
         self.fp.seek(length - 2, os.SEEK_CUR)
@@ -278,18 +317,23 @@ class Jpeg2KImageFile(ImageFile.ImageFile):
             else:
                 self.fp.seek(length - 2, os.SEEK_CUR)
 
-    @property
-    def reduce(self):
+    @property  # type: ignore[override]
+    def reduce(
+        self,
+    ) -> (
+        Callable[[int | tuple[int, int], tuple[int, int, int, int] | None], Image.Image]
+        | int
+    ):
         # https://github.com/python-pillow/Pillow/issues/4343 found that the
         # new Image 'reduce' method was shadowed by this plugin's 'reduce'
         # property. This attempts to allow for both scenarios
         return self._reduce or super().reduce
 
     @reduce.setter
-    def reduce(self, value):
+    def reduce(self, value: int) -> None:
         self._reduce = value
 
-    def load(self):
+    def load(self) -> Image.core.PixelAccess | None:
         if self.tile and self._reduce:
             power = 1 << self._reduce
             adjust = power >> 1
@@ -300,13 +344,14 @@ class Jpeg2KImageFile(ImageFile.ImageFile):
 
             # Update the reduce and layers settings
             t = self.tile[0]
+            assert isinstance(t[3], tuple)
             t3 = (t[3][0], self._reduce, self.layers, t[3][3], t[3][4])
-            self.tile = [(t[0], (0, 0) + self.size, t[2], t3)]
+            self.tile = [ImageFile._Tile(t[0], (0, 0) + self.size, t[2], t3)]
 
         return ImageFile.ImageFile.load(self)
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return (
         prefix[:4] == b"\xff\x4f\xff\x51"
         or prefix[:12] == b"\x00\x00\x00\x0cjP  \x0d\x0a\x87\x0a"
@@ -317,11 +362,13 @@ def _accept(prefix):
 # Save support
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     # Get the keyword arguments
     info = im.encoderinfo
 
-    if filename.endswith(".j2k") or info.get("no_jp2", False):
+    if isinstance(filename, str):
+        filename = filename.encode()
+    if filename.endswith(b".j2k") or info.get("no_jp2", False):
         kind = "j2k"
     else:
         kind = "jp2"
@@ -334,10 +381,7 @@ def _save(im, fp, filename):
     if quality_layers is not None and not (
         isinstance(quality_layers, (list, tuple))
         and all(
-            [
-                isinstance(quality_layer, (int, float))
-                for quality_layer in quality_layers
-            ]
+            isinstance(quality_layer, (int, float)) for quality_layer in quality_layers
         )
     ):
         msg = "quality_layers must be a sequence of numbers"
@@ -382,7 +426,7 @@ def _save(im, fp, filename):
         plt,
     )
 
-    ImageFile._save(im, fp, [("jpeg2k", (0, 0) + im.size, 0, kind)])
+    ImageFile._save(im, fp, [ImageFile._Tile("jpeg2k", (0, 0) + im.size, 0, kind)])
 
 
 # ------------------------------------------------------------
diff --git a/src/PIL/JpegImagePlugin.py b/src/PIL/JpegImagePlugin.py
index dfc7e6e9f..6510e072e 100644
--- a/src/PIL/JpegImagePlugin.py
+++ b/src/PIL/JpegImagePlugin.py
@@ -31,6 +31,8 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
 import array
 import io
 import math
@@ -40,24 +42,29 @@ import subprocess
 import sys
 import tempfile
 import warnings
+from typing import IO, TYPE_CHECKING, Any
 
 from . import Image, ImageFile
 from ._binary import i16be as i16
 from ._binary import i32be as i32
 from ._binary import o8
 from ._binary import o16be as o16
+from ._deprecate import deprecate
 from .JpegPresets import presets
 
+if TYPE_CHECKING:
+    from .MpoImagePlugin import MpoImageFile
+
 #
 # Parser
 
 
-def Skip(self, marker):
+def Skip(self: JpegImageFile, marker: int) -> None:
     n = i16(self.fp.read(2)) - 2
     ImageFile._safe_read(self.fp, n)
 
 
-def APP(self, marker):
+def APP(self: JpegImageFile, marker: int) -> None:
     #
     # Application marker.  Store these in the APP dictionary.
     # Also look for well-known application markers.
@@ -85,11 +92,15 @@ def APP(self, marker):
                 self.info["dpi"] = jfif_density
             self.info["jfif_unit"] = jfif_unit
             self.info["jfif_density"] = jfif_density
-    elif marker == 0xFFE1 and s[:5] == b"Exif\0":
-        if "exif" not in self.info:
-            # extract EXIF information (incomplete)
-            self.info["exif"] = s  # FIXME: value will change
+    elif marker == 0xFFE1 and s[:6] == b"Exif\0\0":
+        # extract EXIF information
+        if "exif" in self.info:
+            self.info["exif"] += s[6:]
+        else:
+            self.info["exif"] = s
             self._exif_offset = self.fp.tell() - n + 6
+    elif marker == 0xFFE1 and s[:29] == b"http://ns.adobe.com/xap/1.0/\x00":
+        self.info["xmp"] = s.split(b"\x00", 1)[1]
     elif marker == 0xFFE2 and s[:5] == b"FPXR\0":
         # extract FlashPix information (incomplete)
         self.info["flashpix"] = s  # FIXME: value will change
@@ -126,13 +137,14 @@ def APP(self, marker):
                 offset += 4
                 data = s[offset : offset + size]
                 if code == 0x03ED:  # ResolutionInfo
-                    data = {
+                    photoshop[code] = {
                         "XResolution": i32(data, 0) / 65536,
                         "DisplayedUnitsX": i16(data, 4),
                         "YResolution": i32(data, 8) / 65536,
                         "DisplayedUnitsY": i16(data, 12),
                     }
-                photoshop[code] = data
+                else:
+                    photoshop[code] = data
                 offset += size
                 offset += offset & 1  # align
             except struct.error:
@@ -154,31 +166,8 @@ def APP(self, marker):
         # plus constant header size
         self.info["mpoffset"] = self.fp.tell() - n + 4
 
-    # If DPI isn't in JPEG header, fetch from EXIF
-    if "dpi" not in self.info and "exif" in self.info:
-        try:
-            exif = self.getexif()
-            resolution_unit = exif[0x0128]
-            x_resolution = exif[0x011A]
-            try:
-                dpi = float(x_resolution[0]) / x_resolution[1]
-            except TypeError:
-                dpi = x_resolution
-            if math.isnan(dpi):
-                raise ValueError
-            if resolution_unit == 3:  # cm
-                # 1 dpcm = 2.54 dpi
-                dpi *= 2.54
-            self.info["dpi"] = dpi, dpi
-        except (TypeError, KeyError, SyntaxError, ValueError, ZeroDivisionError):
-            # SyntaxError for invalid/unreadable EXIF
-            # KeyError for dpi not included
-            # ZeroDivisionError for invalid dpi rational value
-            # ValueError or TypeError for dpi being an invalid float
-            self.info["dpi"] = 72, 72
 
-
-def COM(self, marker):
+def COM(self: JpegImageFile, marker: int) -> None:
     #
     # Comment marker.  Store these in the APP dictionary.
     n = i16(self.fp.read(2)) - 2
@@ -189,7 +178,7 @@ def COM(self, marker):
     self.applist.append(("COM", s))
 
 
-def SOF(self, marker):
+def SOF(self: JpegImageFile, marker: int) -> None:
     #
     # Start of frame marker.  Defines the size and mode of the
     # image.  JPEG is colour blind, so we use some simple
@@ -208,11 +197,11 @@ def SOF(self, marker):
 
     self.layers = s[5]
     if self.layers == 1:
-        self.mode = "L"
+        self._mode = "L"
     elif self.layers == 3:
-        self.mode = "RGB"
+        self._mode = "RGB"
     elif self.layers == 4:
-        self.mode = "CMYK"
+        self._mode = "CMYK"
     else:
         msg = f"cannot handle {self.layers}-layer images"
         raise SyntaxError(msg)
@@ -224,9 +213,7 @@ def SOF(self, marker):
         # fixup icc profile
         self.icclist.sort()  # sort by sequence number
         if self.icclist[0][13] == len(self.icclist):
-            profile = []
-            for p in self.icclist:
-                profile.append(p[14:])
+            profile = [p[14:] for p in self.icclist]
             icc_profile = b"".join(profile)
         else:
             icc_profile = None  # wrong number of fragments
@@ -239,7 +226,7 @@ def SOF(self, marker):
         self.layer.append((t[0], t[1] // 16, t[1] & 15, t[2]))
 
 
-def DQT(self, marker):
+def DQT(self: JpegImageFile, marker: int) -> None:
     #
     # Define quantization table.  Note that there might be more
     # than one table in each marker.
@@ -333,7 +320,7 @@ MARKER = {
 }
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     # Magic number was taken from https://en.wikipedia.org/wiki/JPEG
     return prefix[:3] == b"\xFF\xD8\xFF"
 
@@ -346,7 +333,7 @@ class JpegImageFile(ImageFile.ImageFile):
     format = "JPEG"
     format_description = "JPEG (ISO 10918)"
 
-    def _open(self):
+    def _open(self) -> None:
         s = self.fp.read(3)
 
         if not _accept(s):
@@ -356,15 +343,16 @@ class JpegImageFile(ImageFile.ImageFile):
 
         # Create attributes
         self.bits = self.layers = 0
+        self._exif_offset = 0
 
         # JPEG specifics (internal)
-        self.layer = []
-        self.huffman_dc = {}
-        self.huffman_ac = {}
-        self.quantization = {}
-        self.app = {}  # compatibility
-        self.applist = []
-        self.icclist = []
+        self.layer: list[tuple[int, int, int, int]] = []
+        self._huffman_dc: dict[Any, Any] = {}
+        self._huffman_ac: dict[Any, Any] = {}
+        self.quantization: dict[int, list[int]] = {}
+        self.app: dict[str, bytes] = {}  # compatibility
+        self.applist: list[tuple[str, bytes]] = []
+        self.icclist: list[bytes] = []
 
         while True:
             i = s[0]
@@ -384,11 +372,13 @@ class JpegImageFile(ImageFile.ImageFile):
                     rawmode = self.mode
                     if self.mode == "CMYK":
                         rawmode = "CMYK;I"  # assume adobe conventions
-                    self.tile = [("jpeg", (0, 0) + self.size, 0, (rawmode, ""))]
+                    self.tile = [
+                        ImageFile._Tile("jpeg", (0, 0) + self.size, 0, (rawmode, ""))
+                    ]
                     # self.__offset = self.fp.tell()
                     break
                 s = self.fp.read(1)
-            elif i == 0 or i == 0xFFFF:
+            elif i in {0, 0xFFFF}:
                 # padded marker or junk; move on
                 s = b"\xff"
             elif i == 0xFF00:  # Skip extraneous data (escaped 0xFF)
@@ -397,7 +387,15 @@ class JpegImageFile(ImageFile.ImageFile):
                 msg = "no marker found"
                 raise SyntaxError(msg)
 
-    def load_read(self, read_bytes):
+        self._read_dpi_from_exif()
+
+    def __getattr__(self, name: str) -> Any:
+        if name in ("huffman_ac", "huffman_dc"):
+            deprecate(name, 12)
+            return getattr(self, "_" + name)
+        raise AttributeError(name)
+
+    def load_read(self, read_bytes: int) -> bytes:
         """
         internal: read more image data
         For premature EOF and LOAD_TRUNCATED_IMAGES adds EOI marker
@@ -413,20 +411,23 @@ class JpegImageFile(ImageFile.ImageFile):
 
         return s
 
-    def draft(self, mode, size):
+    def draft(
+        self, mode: str | None, size: tuple[int, int] | None
+    ) -> tuple[str, tuple[int, int, float, float]] | None:
         if len(self.tile) != 1:
-            return
+            return None
 
         # Protect from second call
         if self.decoderconfig:
-            return
+            return None
 
         d, e, o, a = self.tile[0]
         scale = 1
         original_size = self.size
 
+        assert isinstance(a, tuple)
         if a[0] == "RGB" and mode in ["L", "YCbCr"]:
-            self.mode = mode
+            self._mode = mode
             a = mode, ""
 
         if size:
@@ -434,6 +435,7 @@ class JpegImageFile(ImageFile.ImageFile):
             for s in [8, 4, 2, 1]:
                 if scale >= s:
                     break
+            assert e is not None
             e = (
                 e[0],
                 e[1],
@@ -443,13 +445,13 @@ class JpegImageFile(ImageFile.ImageFile):
             self._size = ((self.size[0] + s - 1) // s, (self.size[1] + s - 1) // s)
             scale = s
 
-        self.tile = [(d, e, o, a)]
+        self.tile = [ImageFile._Tile(d, e, o, a)]
         self.decoderconfig = (scale, 0)
 
         box = (0, 0, original_size[0] / scale, original_size[1] / scale)
         return self.mode, box
 
-    def load_djpeg(self):
+    def load_djpeg(self) -> None:
         # ALTERNATIVE: handle JPEGs via the IJG command line utilities
 
         f, path = tempfile.mkstemp()
@@ -475,40 +477,54 @@ class JpegImageFile(ImageFile.ImageFile):
             except OSError:
                 pass
 
-        self.mode = self.im.mode
+        self._mode = self.im.mode
         self._size = self.im.size
 
         self.tile = []
 
-    def _getexif(self):
+    def _getexif(self) -> dict[int, Any] | None:
         return _getexif(self)
 
-    def _getmp(self):
+    def _read_dpi_from_exif(self) -> None:
+        # If DPI isn't in JPEG header, fetch from EXIF
+        if "dpi" in self.info or "exif" not in self.info:
+            return
+        try:
+            exif = self.getexif()
+            resolution_unit = exif[0x0128]
+            x_resolution = exif[0x011A]
+            try:
+                dpi = float(x_resolution[0]) / x_resolution[1]
+            except TypeError:
+                dpi = x_resolution
+            if math.isnan(dpi):
+                msg = "DPI is not a number"
+                raise ValueError(msg)
+            if resolution_unit == 3:  # cm
+                # 1 dpcm = 2.54 dpi
+                dpi *= 2.54
+            self.info["dpi"] = dpi, dpi
+        except (
+            struct.error,  # truncated EXIF
+            KeyError,  # dpi not included
+            SyntaxError,  # invalid/unreadable EXIF
+            TypeError,  # dpi is an invalid float
+            ValueError,  # dpi is an invalid float
+            ZeroDivisionError,  # invalid dpi rational value
+        ):
+            self.info["dpi"] = 72, 72
+
+    def _getmp(self) -> dict[int, Any] | None:
         return _getmp(self)
 
-    def getxmp(self):
-        """
-        Returns a dictionary containing the XMP tags.
-        Requires defusedxml to be installed.
 
-        :returns: XMP tags in a dictionary.
-        """
-
-        for segment, content in self.applist:
-            if segment == "APP1":
-                marker, xmp_tags = content.rsplit(b"\x00", 1)
-                if marker == b"http://ns.adobe.com/xap/1.0/":
-                    return self._getxmp(xmp_tags)
-        return {}
-
-
-def _getexif(self):
+def _getexif(self: JpegImageFile) -> dict[int, Any] | None:
     if "exif" not in self.info:
         return None
     return self.getexif()._get_merged_dict()
 
 
-def _getmp(self):
+def _getmp(self: JpegImageFile) -> dict[int, Any] | None:
     # Extract MP information.  This method was inspired by the "highly
     # experimental" _getexif version that's been in use for years now,
     # itself based on the ImageFileDirectory class in the TIFF plugin.
@@ -616,7 +632,7 @@ samplings = {
 # fmt: on
 
 
-def get_sampling(im):
+def get_sampling(im: Image.Image) -> int:
     # There's no subsampling when images have only 1 layer
     # (grayscale images) or when they are CMYK (4 layers),
     # so set subsampling to the default value.
@@ -624,13 +640,13 @@ def get_sampling(im):
     # NOTE: currently Pillow can't encode JPEG to YCCK format.
     # If YCCK support is added in the future, subsampling code will have
     # to be updated (here and in JpegEncode.c) to deal with 4 layers.
-    if not hasattr(im, "layers") or im.layers in (1, 4):
+    if not isinstance(im, JpegImageFile) or im.layers in (1, 4):
         return -1
     sampling = im.layer[0][1:3] + im.layer[1][1:3] + im.layer[2][1:3]
     return samplings.get(sampling, -1)
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if im.width == 0 or im.height == 0:
         msg = "cannot write empty image as JPEG"
         raise ValueError(msg)
@@ -683,7 +699,11 @@ def _save(im, fp, filename):
             raise ValueError(msg)
         subsampling = get_sampling(im)
 
-    def validate_qtables(qtables):
+    def validate_qtables(
+        qtables: (
+            str | tuple[list[int], ...] | list[list[int]] | dict[int, list[int]] | None
+        )
+    ) -> list[list[int]] | None:
         if qtables is None:
             return qtables
         if isinstance(qtables, str):
@@ -711,13 +731,14 @@ def _save(im, fp, filename):
             for idx, table in enumerate(qtables):
                 try:
                     if len(table) != 64:
-                        raise TypeError
-                    table = array.array("H", table)
+                        msg = "Invalid quantization table"
+                        raise TypeError(msg)
+                    table_array = array.array("H", table)
                 except TypeError as e:
                     msg = "Invalid quantization table"
                     raise ValueError(msg) from e
                 else:
-                    qtables[idx] = list(table)
+                    qtables[idx] = list(table_array)
             return qtables
 
     if qtables == "keep":
@@ -730,17 +751,27 @@ def _save(im, fp, filename):
     extra = info.get("extra", b"")
 
     MAX_BYTES_IN_MARKER = 65533
+    xmp = info.get("xmp", im.info.get("xmp"))
+    if xmp:
+        overhead_len = 29  # b"http://ns.adobe.com/xap/1.0/\x00"
+        max_data_bytes_in_marker = MAX_BYTES_IN_MARKER - overhead_len
+        if len(xmp) > max_data_bytes_in_marker:
+            msg = "XMP data is too long"
+            raise ValueError(msg)
+        size = o16(2 + overhead_len + len(xmp))
+        extra += b"\xFF\xE1" + size + b"http://ns.adobe.com/xap/1.0/\x00" + xmp
+
     icc_profile = info.get("icc_profile")
     if icc_profile:
-        ICC_OVERHEAD_LEN = 14
-        MAX_DATA_BYTES_IN_MARKER = MAX_BYTES_IN_MARKER - ICC_OVERHEAD_LEN
+        overhead_len = 14  # b"ICC_PROFILE\0" + o8(i) + o8(len(markers))
+        max_data_bytes_in_marker = MAX_BYTES_IN_MARKER - overhead_len
         markers = []
         while icc_profile:
-            markers.append(icc_profile[:MAX_DATA_BYTES_IN_MARKER])
-            icc_profile = icc_profile[MAX_DATA_BYTES_IN_MARKER:]
+            markers.append(icc_profile[:max_data_bytes_in_marker])
+            icc_profile = icc_profile[max_data_bytes_in_marker:]
         i = 1
         for marker in markers:
-            size = o16(2 + ICC_OVERHEAD_LEN + len(marker))
+            size = o16(2 + overhead_len + len(marker))
             extra += (
                 b"\xFF\xE2"
                 + size
@@ -773,10 +804,13 @@ def _save(im, fp, filename):
         progressive,
         info.get("smooth", 0),
         optimize,
+        info.get("keep_rgb", False),
         info.get("streamtype", 0),
         dpi[0],
         dpi[1],
         subsampling,
+        info.get("restart_marker_blocks", 0),
+        info.get("restart_marker_rows", 0),
         qtables,
         comment,
         extra,
@@ -797,15 +831,21 @@ def _save(im, fp, filename):
             bufsize = 2 * im.size[0] * im.size[1]
         else:
             bufsize = im.size[0] * im.size[1]
+        if exif:
+            bufsize += len(exif) + 5
+        if extra:
+            bufsize += len(extra) + 1
+    else:
+        # The EXIF info needs to be written as one block, + APP1, + one spare byte.
+        # Ensure that our buffer is big enough. Same with the icc_profile block.
+        bufsize = max(bufsize, len(exif) + 5, len(extra) + 1)
 
-    # The EXIF info needs to be written as one block, + APP1, + one spare byte.
-    # Ensure that our buffer is big enough. Same with the icc_profile block.
-    bufsize = max(ImageFile.MAXBLOCK, bufsize, len(exif) + 5, len(extra) + 1)
-
-    ImageFile._save(im, fp, [("jpeg", (0, 0) + im.size, 0, rawmode)], bufsize)
+    ImageFile._save(
+        im, fp, [ImageFile._Tile("jpeg", (0, 0) + im.size, 0, rawmode)], bufsize
+    )
 
 
-def _save_cjpeg(im, fp, filename):
+def _save_cjpeg(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     # ALTERNATIVE: handle JPEGs via the IJG command line utilities.
     tempfile = im._dump()
     subprocess.check_call(["cjpeg", "-outfile", filename, tempfile])
@@ -817,11 +857,17 @@ def _save_cjpeg(im, fp, filename):
 
 ##
 # Factory for making JPEG and MPO instances
-def jpeg_factory(fp=None, filename=None):
+def jpeg_factory(
+    fp: IO[bytes], filename: str | bytes | None = None
+) -> JpegImageFile | MpoImageFile:
     im = JpegImageFile(fp, filename)
     try:
         mpheader = im._getmp()
-        if mpheader[45057] > 1:
+        if mpheader is not None and mpheader[45057] > 1:
+            for segment, content in im.applist:
+                if segment == "APP1" and b' hdrgm:Version="' in content:
+                    # Ultra HDR images are not yet supported
+                    return im
             # It's actually an MPO
             from .MpoImagePlugin import MpoImageFile
 
diff --git a/src/PIL/JpegPresets.py b/src/PIL/JpegPresets.py
index a678e248e..d0e64a35e 100644
--- a/src/PIL/JpegPresets.py
+++ b/src/PIL/JpegPresets.py
@@ -63,6 +63,8 @@ https://web.archive.org/web/20120328125543/http://www.jpegcameras.com/libjpeg/li
 
 """
 
+from __future__ import annotations
+
 # fmt: off
 presets = {
             'web_low':      {'subsampling':  2,  # "4:2:0"
diff --git a/src/PIL/McIdasImagePlugin.py b/src/PIL/McIdasImagePlugin.py
index 17c008b9a..5dd031be3 100644
--- a/src/PIL/McIdasImagePlugin.py
+++ b/src/PIL/McIdasImagePlugin.py
@@ -15,14 +15,15 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import struct
 
 from . import Image, ImageFile
 
 
-def _accept(s):
-    return s[:8] == b"\x00\x00\x00\x00\x00\x00\x00\x04"
+def _accept(prefix: bytes) -> bool:
+    return prefix[:8] == b"\x00\x00\x00\x00\x00\x00\x00\x04"
 
 
 ##
@@ -33,8 +34,10 @@ class McIdasImageFile(ImageFile.ImageFile):
     format = "MCIDAS"
     format_description = "McIdas area file"
 
-    def _open(self):
+    def _open(self) -> None:
         # parse area file directory
+        assert self.fp is not None
+
         s = self.fp.read(256)
         if not _accept(s) or len(s) != 256:
             msg = "not an McIdas area file"
@@ -58,13 +61,15 @@ class McIdasImageFile(ImageFile.ImageFile):
             msg = "unsupported McIdas format"
             raise SyntaxError(msg)
 
-        self.mode = mode
+        self._mode = mode
         self._size = w[10], w[9]
 
         offset = w[34] + w[15]
         stride = w[15] + w[10] * w[11] * w[14]
 
-        self.tile = [("raw", (0, 0) + self.size, offset, (rawmode, stride, 1))]
+        self.tile = [
+            ImageFile._Tile("raw", (0, 0) + self.size, offset, (rawmode, stride, 1))
+        ]
 
 
 # --------------------------------------------------------------------
diff --git a/src/PIL/MicImagePlugin.py b/src/PIL/MicImagePlugin.py
index 801318930..5f23a34b9 100644
--- a/src/PIL/MicImagePlugin.py
+++ b/src/PIL/MicImagePlugin.py
@@ -15,7 +15,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 import olefile
 
@@ -25,7 +25,7 @@ from . import Image, TiffImagePlugin
 # --------------------------------------------------------------------
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:8] == olefile.MAGIC
 
 
@@ -38,7 +38,7 @@ class MicImageFile(TiffImagePlugin.TiffImageFile):
     format_description = "Microsoft Image Composer"
     _close_exclusive_fp_after_loading = False
 
-    def _open(self):
+    def _open(self) -> None:
         # read the OLE directory and see if this is a likely
         # to be a Microsoft Image Composer file
 
@@ -51,10 +51,11 @@ class MicImageFile(TiffImagePlugin.TiffImageFile):
         # find ACI subfiles with Image members (maybe not the
         # best way to identify MIC files, but what the... ;-)
 
-        self.images = []
-        for path in self.ole.listdir():
-            if path[1:] and path[0][-4:] == ".ACI" and path[1] == "Image":
-                self.images.append(path)
+        self.images = [
+            path
+            for path in self.ole.listdir()
+            if path[1:] and path[0][-4:] == ".ACI" and path[1] == "Image"
+        ]
 
         # if we didn't find any images, this is probably not
         # an MIC file.
@@ -62,13 +63,14 @@ class MicImageFile(TiffImagePlugin.TiffImageFile):
             msg = "not an MIC file; no image entries"
             raise SyntaxError(msg)
 
-        self.frame = None
+        self.frame = -1
         self._n_frames = len(self.images)
         self.is_animated = self._n_frames > 1
 
+        self.__fp = self.fp
         self.seek(0)
 
-    def seek(self, frame):
+    def seek(self, frame: int) -> None:
         if not self._seek_check(frame):
             return
         try:
@@ -83,14 +85,16 @@ class MicImageFile(TiffImagePlugin.TiffImageFile):
 
         self.frame = frame
 
-    def tell(self):
+    def tell(self) -> int:
         return self.frame
 
-    def close(self):
+    def close(self) -> None:
+        self.__fp.close()
         self.ole.close()
         super().close()
 
-    def __exit__(self, *args):
+    def __exit__(self, *args: object) -> None:
+        self.__fp.close()
         self.ole.close()
         super().__exit__()
 
diff --git a/src/PIL/MpegImagePlugin.py b/src/PIL/MpegImagePlugin.py
index d96d3a11c..ad4d3e937 100644
--- a/src/PIL/MpegImagePlugin.py
+++ b/src/PIL/MpegImagePlugin.py
@@ -12,25 +12,26 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 from . import Image, ImageFile
 from ._binary import i8
+from ._typing import SupportsRead
 
 #
 # Bitstream parser
 
 
 class BitStream:
-    def __init__(self, fp):
+    def __init__(self, fp: SupportsRead[bytes]) -> None:
         self.fp = fp
         self.bits = 0
         self.bitbuffer = 0
 
-    def next(self):
+    def next(self) -> int:
         return i8(self.fp.read(1))
 
-    def peek(self, bits):
+    def peek(self, bits: int) -> int:
         while self.bits < bits:
             c = self.next()
             if c < 0:
@@ -40,18 +41,22 @@ class BitStream:
             self.bits += 8
         return self.bitbuffer >> (self.bits - bits) & (1 << bits) - 1
 
-    def skip(self, bits):
+    def skip(self, bits: int) -> None:
         while self.bits < bits:
             self.bitbuffer = (self.bitbuffer << 8) + i8(self.fp.read(1))
             self.bits += 8
         self.bits = self.bits - bits
 
-    def read(self, bits):
+    def read(self, bits: int) -> int:
         v = self.peek(bits)
         self.bits = self.bits - bits
         return v
 
 
+def _accept(prefix: bytes) -> bool:
+    return prefix[:4] == b"\x00\x00\x01\xb3"
+
+
 ##
 # Image plugin for MPEG streams.  This plugin can identify a stream,
 # but it cannot read it.
@@ -61,21 +66,22 @@ class MpegImageFile(ImageFile.ImageFile):
     format = "MPEG"
     format_description = "MPEG"
 
-    def _open(self):
-        s = BitStream(self.fp)
+    def _open(self) -> None:
+        assert self.fp is not None
 
+        s = BitStream(self.fp)
         if s.read(32) != 0x1B3:
             msg = "not an MPEG file"
             raise SyntaxError(msg)
 
-        self.mode = "RGB"
+        self._mode = "RGB"
         self._size = s.read(12), s.read(12)
 
 
 # --------------------------------------------------------------------
 # Registry stuff
 
-Image.register_open(MpegImageFile.format, MpegImageFile)
+Image.register_open(MpegImageFile.format, MpegImageFile, _accept)
 
 Image.register_extensions(MpegImageFile.format, [".mpg", ".mpeg"])
 
diff --git a/src/PIL/MpoImagePlugin.py b/src/PIL/MpoImagePlugin.py
index f9261c77d..71f89a09a 100644
--- a/src/PIL/MpoImagePlugin.py
+++ b/src/PIL/MpoImagePlugin.py
@@ -17,43 +17,35 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import itertools
 import os
 import struct
+from typing import IO, Any, cast
 
 from . import (
-    ExifTags,
     Image,
     ImageFile,
     ImageSequence,
     JpegImagePlugin,
     TiffImagePlugin,
 )
-from ._binary import i16be as i16
 from ._binary import o32le
 
-# def _accept(prefix):
-#     return JpegImagePlugin._accept(prefix)
 
-
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     JpegImagePlugin._save(im, fp, filename)
 
 
-def _save_all(im, fp, filename):
+def _save_all(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     append_images = im.encoderinfo.get("append_images", [])
-    if not append_images:
-        try:
-            animated = im.is_animated
-        except AttributeError:
-            animated = False
-        if not animated:
-            _save(im, fp, filename)
-            return
+    if not append_images and not getattr(im, "is_animated", False):
+        _save(im, fp, filename)
+        return
 
     mpf_offset = 28
-    offsets = []
+    offsets: list[int] = []
     for imSequence in itertools.chain([im], append_images):
         for im_frame in ImageSequence.Iterator(imSequence):
             if not offsets:
@@ -105,14 +97,16 @@ class MpoImageFile(JpegImagePlugin.JpegImageFile):
     format_description = "MPO (CIPA DC-007)"
     _close_exclusive_fp_after_loading = False
 
-    def _open(self):
+    def _open(self) -> None:
         self.fp.seek(0)  # prep the fp in order to pass the JPEG test
         JpegImagePlugin.JpegImageFile._open(self)
         self._after_jpeg_open()
 
-    def _after_jpeg_open(self, mpheader=None):
-        self._initial_size = self.size
+    def _after_jpeg_open(self, mpheader: dict[int, Any] | None = None) -> None:
         self.mpinfo = mpheader if mpheader is not None else self._getmp()
+        if self.mpinfo is None:
+            msg = "Image appears to be a malformed MPO file"
+            raise ValueError(msg)
         self.n_frames = self.mpinfo[0xB001]
         self.__mpoffsets = [
             mpent["DataOffset"] + self.info["mpoffset"] for mpent in self.mpinfo[0xB002]
@@ -130,43 +124,41 @@ class MpoImageFile(JpegImagePlugin.JpegImageFile):
         # for now we can only handle reading and individual frame extraction
         self.readonly = 1
 
-    def load_seek(self, pos):
+    def load_seek(self, pos: int) -> None:
         self._fp.seek(pos)
 
-    def seek(self, frame):
+    def seek(self, frame: int) -> None:
         if not self._seek_check(frame):
             return
         self.fp = self._fp
         self.offset = self.__mpoffsets[frame]
 
+        original_exif = self.info.get("exif")
+        if "exif" in self.info:
+            del self.info["exif"]
+
         self.fp.seek(self.offset + 2)  # skip SOI marker
-        segment = self.fp.read(2)
-        if not segment:
+        if not self.fp.read(2):
             msg = "No data found for frame"
             raise ValueError(msg)
-        self._size = self._initial_size
-        if i16(segment) == 0xFFE1:  # APP1
-            n = i16(self.fp.read(2)) - 2
-            self.info["exif"] = ImageFile._safe_read(self.fp, n)
+        self.fp.seek(self.offset)
+        JpegImagePlugin.JpegImageFile._open(self)
+        if self.info.get("exif") != original_exif:
             self._reload_exif()
 
-            mptype = self.mpinfo[0xB002][frame]["Attribute"]["MPType"]
-            if mptype.startswith("Large Thumbnail"):
-                exif = self.getexif().get_ifd(ExifTags.IFD.Exif)
-                if 40962 in exif and 40963 in exif:
-                    self._size = (exif[40962], exif[40963])
-        elif "exif" in self.info:
-            del self.info["exif"]
-            self._reload_exif()
-
-        self.tile = [("jpeg", (0, 0) + self.size, self.offset, (self.mode, ""))]
+        self.tile = [
+            ImageFile._Tile("jpeg", (0, 0) + self.size, self.offset, self.tile[0][-1])
+        ]
         self.__frame = frame
 
-    def tell(self):
+    def tell(self) -> int:
         return self.__frame
 
     @staticmethod
-    def adopt(jpeg_instance, mpheader=None):
+    def adopt(
+        jpeg_instance: JpegImagePlugin.JpegImageFile,
+        mpheader: dict[int, Any] | None = None,
+    ) -> MpoImageFile:
         """
         Transform the instance of JpegImageFile into
         an instance of MpoImageFile.
@@ -178,8 +170,9 @@ class MpoImageFile(JpegImagePlugin.JpegImageFile):
         double call to _open.
         """
         jpeg_instance.__class__ = MpoImageFile
-        jpeg_instance._after_jpeg_open(mpheader)
-        return jpeg_instance
+        mpo_instance = cast(MpoImageFile, jpeg_instance)
+        mpo_instance._after_jpeg_open(mpheader)
+        return mpo_instance
 
 
 # ---------------------------------------------------------------------
diff --git a/src/PIL/MspImagePlugin.py b/src/PIL/MspImagePlugin.py
index c6567b2ae..f3460a787 100644
--- a/src/PIL/MspImagePlugin.py
+++ b/src/PIL/MspImagePlugin.py
@@ -22,9 +22,11 @@
 # Figure 206. Windows Paint Version 2: "LinS" Format. Used in Windows V2.03
 #
 # See also: https://www.fileformat.info/format/mspaint/egff.htm
+from __future__ import annotations
 
 import io
 import struct
+from typing import IO
 
 from . import Image, ImageFile
 from ._binary import i16le as i16
@@ -34,7 +36,7 @@ from ._binary import o16le as o16
 # read MSP files
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] in [b"DanM", b"LinS"]
 
 
@@ -47,8 +49,10 @@ class MspImageFile(ImageFile.ImageFile):
     format = "MSP"
     format_description = "Windows Paint"
 
-    def _open(self):
+    def _open(self) -> None:
         # Header
+        assert self.fp is not None
+
         s = self.fp.read(32)
         if not _accept(s):
             msg = "not an MSP file"
@@ -62,13 +66,13 @@ class MspImageFile(ImageFile.ImageFile):
             msg = "bad MSP checksum"
             raise SyntaxError(msg)
 
-        self.mode = "1"
+        self._mode = "1"
         self._size = i16(s, 4), i16(s, 6)
 
         if s[:4] == b"DanM":
-            self.tile = [("raw", (0, 0) + self.size, 32, ("1", 0, 1))]
+            self.tile = [ImageFile._Tile("raw", (0, 0) + self.size, 32, ("1", 0, 1))]
         else:
-            self.tile = [("MSP", (0, 0) + self.size, 32, None)]
+            self.tile = [ImageFile._Tile("MSP", (0, 0) + self.size, 32, None)]
 
 
 class MspDecoder(ImageFile.PyDecoder):
@@ -108,7 +112,9 @@ class MspDecoder(ImageFile.PyDecoder):
 
     _pulls_fd = True
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
+        assert self.fd is not None
+
         img = io.BytesIO()
         blank_line = bytearray((0xFF,) * ((self.state.xsize + 7) // 8))
         try:
@@ -146,7 +152,7 @@ class MspDecoder(ImageFile.PyDecoder):
                 msg = f"Corrupted MSP file in row {x}"
                 raise OSError(msg) from e
 
-        self.set_as_raw(img.getvalue(), ("1", 0, 1))
+        self.set_as_raw(img.getvalue(), "1")
 
         return -1, 0
 
@@ -158,7 +164,7 @@ Image.register_decoder("MSP", MspDecoder)
 # write MSP files (uncompressed only)
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if im.mode != "1":
         msg = f"cannot write mode {im.mode} as MSP"
         raise OSError(msg)
@@ -182,7 +188,7 @@ def _save(im, fp, filename):
         fp.write(o16(h))
 
     # image body
-    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 32, ("1", 0, 1))])
+    ImageFile._save(im, fp, [ImageFile._Tile("raw", (0, 0) + im.size, 32, ("1", 0, 1))])
 
 
 #
diff --git a/src/PIL/PSDraw.py b/src/PIL/PSDraw.py
index 13b3048f6..02939d26b 100644
--- a/src/PIL/PSDraw.py
+++ b/src/PIL/PSDraw.py
@@ -14,8 +14,10 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import sys
+from typing import IO, TYPE_CHECKING
 
 from . import EpsImagePlugin
 
@@ -26,18 +28,15 @@ from . import EpsImagePlugin
 class PSDraw:
     """
     Sets up printing to the given file. If ``fp`` is omitted,
-    ``sys.stdout.buffer`` or ``sys.stdout`` is assumed.
+    ``sys.stdout.buffer`` is assumed.
     """
 
-    def __init__(self, fp=None):
+    def __init__(self, fp: IO[bytes] | None = None) -> None:
         if not fp:
-            try:
-                fp = sys.stdout.buffer
-            except AttributeError:
-                fp = sys.stdout
+            fp = sys.stdout.buffer
         self.fp = fp
 
-    def begin_document(self, id=None):
+    def begin_document(self, id: str | None = None) -> None:
         """Set up printing of a document. (Write PostScript DSC header.)"""
         # FIXME: incomplete
         self.fp.write(
@@ -51,30 +50,32 @@ class PSDraw:
         self.fp.write(EDROFF_PS)
         self.fp.write(VDI_PS)
         self.fp.write(b"%%EndProlog\n")
-        self.isofont = {}
+        self.isofont: dict[bytes, int] = {}
 
-    def end_document(self):
+    def end_document(self) -> None:
         """Ends printing. (Write PostScript DSC footer.)"""
         self.fp.write(b"%%EndDocument\nrestore showpage\n%%End\n")
         if hasattr(self.fp, "flush"):
             self.fp.flush()
 
-    def setfont(self, font, size):
+    def setfont(self, font: str, size: int) -> None:
         """
         Selects which font to use.
 
         :param font: A PostScript font name
         :param size: Size in points.
         """
-        font = bytes(font, "UTF-8")
-        if font not in self.isofont:
+        font_bytes = bytes(font, "UTF-8")
+        if font_bytes not in self.isofont:
             # reencode font
-            self.fp.write(b"/PSDraw-%s ISOLatin1Encoding /%s E\n" % (font, font))
-            self.isofont[font] = 1
+            self.fp.write(
+                b"/PSDraw-%s ISOLatin1Encoding /%s E\n" % (font_bytes, font_bytes)
+            )
+            self.isofont[font_bytes] = 1
         # rough
-        self.fp.write(b"/F0 %d /PSDraw-%s F\n" % (size, font))
+        self.fp.write(b"/F0 %d /PSDraw-%s F\n" % (size, font_bytes))
 
-    def line(self, xy0, xy1):
+    def line(self, xy0: tuple[int, int], xy1: tuple[int, int]) -> None:
         """
         Draws a line between the two points. Coordinates are given in
         PostScript point coordinates (72 points per inch, (0, 0) is the lower
@@ -82,7 +83,7 @@ class PSDraw:
         """
         self.fp.write(b"%d %d %d %d Vl\n" % (*xy0, *xy1))
 
-    def rectangle(self, box):
+    def rectangle(self, box: tuple[int, int, int, int]) -> None:
         """
         Draws a rectangle.
 
@@ -91,25 +92,29 @@ class PSDraw:
         """
         self.fp.write(b"%d %d M 0 %d %d Vr\n" % box)
 
-    def text(self, xy, text):
+    def text(self, xy: tuple[int, int], text: str) -> None:
         """
         Draws text at the given position. You must use
         :py:meth:`~PIL.PSDraw.PSDraw.setfont` before calling this method.
         """
-        text = bytes(text, "UTF-8")
-        text = b"\\(".join(text.split(b"("))
-        text = b"\\)".join(text.split(b")"))
-        xy += (text,)
-        self.fp.write(b"%d %d M (%s) S\n" % xy)
+        text_bytes = bytes(text, "UTF-8")
+        text_bytes = b"\\(".join(text_bytes.split(b"("))
+        text_bytes = b"\\)".join(text_bytes.split(b")"))
+        self.fp.write(b"%d %d M (%s) S\n" % (xy + (text_bytes,)))
 
-    def image(self, box, im, dpi=None):
+    if TYPE_CHECKING:
+        from . import Image
+
+    def image(
+        self, box: tuple[int, int, int, int], im: Image.Image, dpi: int | None = None
+    ) -> None:
         """Draw a PIL image, centered in the given box."""
         # default resolution depends on mode
         if not dpi:
             if im.mode == "1":
                 dpi = 200  # fax
             else:
-                dpi = 100  # greyscale
+                dpi = 100  # grayscale
         # image size (on paper)
         x = im.size[0] * 72 / dpi
         y = im.size[1] * 72 / dpi
@@ -130,7 +135,7 @@ class PSDraw:
             sx = x / im.size[0]
             sy = y / im.size[1]
             self.fp.write(b"%f %f scale\n" % (sx, sy))
-        EpsImagePlugin._save(im, self.fp, None, 0)
+        EpsImagePlugin._save(im, self.fp, "", 0)
         self.fp.write(b"\ngrestore\n")
 
 
diff --git a/src/PIL/PaletteFile.py b/src/PIL/PaletteFile.py
index 4a2c497fc..81652e5ee 100644
--- a/src/PIL/PaletteFile.py
+++ b/src/PIL/PaletteFile.py
@@ -12,6 +12,9 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
+from typing import IO
 
 from ._binary import o8
 
@@ -21,8 +24,8 @@ class PaletteFile:
 
     rawmode = "RGB"
 
-    def __init__(self, fp):
-        self.palette = [(i, i, i) for i in range(256)]
+    def __init__(self, fp: IO[bytes]) -> None:
+        palette = [o8(i) * 3 for i in range(256)]
 
         while True:
             s = fp.readline()
@@ -43,9 +46,9 @@ class PaletteFile:
                 g = b = r
 
             if 0 <= i <= 255:
-                self.palette[i] = o8(r) + o8(g) + o8(b)
+                palette[i] = o8(r) + o8(g) + o8(b)
 
-        self.palette = b"".join(self.palette)
+        self.palette = b"".join(palette)
 
-    def getpalette(self):
+    def getpalette(self) -> tuple[bytes, str]:
         return self.palette, self.rawmode
diff --git a/src/PIL/PalmImagePlugin.py b/src/PIL/PalmImagePlugin.py
index a88a90791..b33245376 100644
--- a/src/PIL/PalmImagePlugin.py
+++ b/src/PIL/PalmImagePlugin.py
@@ -6,6 +6,9 @@
 ##
 # Image plugin for Palm pixmap images (output only).
 ##
+from __future__ import annotations
+
+from typing import IO
 
 from . import Image, ImageFile
 from ._binary import o8
@@ -81,10 +84,10 @@ _Palm8BitColormapValues = (
 
 
 # so build a prototype image to be used for palette resampling
-def build_prototype_image():
+def build_prototype_image() -> Image.Image:
     image = Image.new("L", (1, len(_Palm8BitColormapValues)))
     image.putdata(list(range(len(_Palm8BitColormapValues))))
-    palettedata = ()
+    palettedata: tuple[int, ...] = ()
     for colormapValue in _Palm8BitColormapValues:
         palettedata += colormapValue
     palettedata += (0, 0, 0) * (256 - len(_Palm8BitColormapValues))
@@ -111,7 +114,7 @@ _COMPRESSION_TYPES = {"none": 0xFF, "rle": 0x01, "scanline": 0x00}
 # (Internal) Image save plugin for the Palm format.
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if im.mode == "P":
         # we assume this is a color Palm image with the standard colormap,
         # unless the "info" dict has a "custom-colormap" field
@@ -124,24 +127,25 @@ def _save(im, fp, filename):
         if im.encoderinfo.get("bpp") in (1, 2, 4):
             # this is 8-bit grayscale, so we shift it to get the high-order bits,
             # and invert it because
-            # Palm does greyscale from white (0) to black (1)
+            # Palm does grayscale from white (0) to black (1)
             bpp = im.encoderinfo["bpp"]
-            im = im.point(
-                lambda x, shift=8 - bpp, maxval=(1 << bpp) - 1: maxval - (x >> shift)
-            )
+            maxval = (1 << bpp) - 1
+            shift = 8 - bpp
+            im = im.point(lambda x: maxval - (x >> shift))
         elif im.info.get("bpp") in (1, 2, 4):
             # here we assume that even though the inherent mode is 8-bit grayscale,
             # only the lower bpp bits are significant.
             # We invert them to match the Palm.
             bpp = im.info["bpp"]
-            im = im.point(lambda x, maxval=(1 << bpp) - 1: maxval - (x & maxval))
+            maxval = (1 << bpp) - 1
+            im = im.point(lambda x: maxval - (x & maxval))
         else:
             msg = f"cannot write mode {im.mode} as Palm"
             raise OSError(msg)
 
         # we ignore the palette here
-        im.mode = "P"
-        rawmode = "P;" + str(bpp)
+        im._mode = "P"
+        rawmode = f"P;{bpp}"
         version = 1
 
     elif im.mode == "1":
@@ -169,6 +173,7 @@ def _save(im, fp, filename):
 
     flags = 0
     if im.mode == "P" and "custom-colormap" in im.info:
+        assert im.palette is not None
         flags = flags & _FLAGS["custom-colormap"]
         colormapsize = 4 * 256 + 2
         colormapmode = im.palette.mode
@@ -209,7 +214,9 @@ def _save(im, fp, filename):
                 )
 
     # now convert data to raw form
-    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, rowbytes, 1))])
+    ImageFile._save(
+        im, fp, [ImageFile._Tile("raw", (0, 0) + im.size, 0, (rawmode, rowbytes, 1))]
+    )
 
     if hasattr(fp, "flush"):
         fp.flush()
diff --git a/src/PIL/PcdImagePlugin.py b/src/PIL/PcdImagePlugin.py
index e390f3fe5..e8ea800a4 100644
--- a/src/PIL/PcdImagePlugin.py
+++ b/src/PIL/PcdImagePlugin.py
@@ -13,7 +13,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 from . import Image, ImageFile
 
@@ -27,8 +27,10 @@ class PcdImageFile(ImageFile.ImageFile):
     format = "PCD"
     format_description = "Kodak PhotoCD"
 
-    def _open(self):
+    def _open(self) -> None:
         # rough
+        assert self.fp is not None
+
         self.fp.seek(2048)
         s = self.fp.read(2048)
 
@@ -43,11 +45,11 @@ class PcdImageFile(ImageFile.ImageFile):
         elif orientation == 3:
             self.tile_post_rotate = -90
 
-        self.mode = "RGB"
+        self._mode = "RGB"
         self._size = 768, 512  # FIXME: not correct for rotated images!
-        self.tile = [("pcd", (0, 0) + self.size, 96 * 2048, None)]
+        self.tile = [ImageFile._Tile("pcd", (0, 0) + self.size, 96 * 2048, None)]
 
-    def load_end(self):
+    def load_end(self) -> None:
         if self.tile_post_rotate:
             # Handle rotated PCDs
             self.im = self.im.rotate(self.tile_post_rotate)
diff --git a/src/PIL/PcfFontFile.py b/src/PIL/PcfFontFile.py
index 8db5822fe..0d1968b14 100644
--- a/src/PIL/PcfFontFile.py
+++ b/src/PIL/PcfFontFile.py
@@ -15,8 +15,10 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import io
+from typing import BinaryIO, Callable
 
 from . import FontFile, Image
 from ._binary import i8
@@ -40,7 +42,7 @@ PCF_SWIDTHS = 1 << 6
 PCF_GLYPH_NAMES = 1 << 7
 PCF_BDF_ACCELERATORS = 1 << 8
 
-BYTES_PER_ROW = [
+BYTES_PER_ROW: list[Callable[[int], int]] = [
     lambda bits: ((bits + 7) >> 3),
     lambda bits: ((bits + 15) >> 3) & ~1,
     lambda bits: ((bits + 31) >> 3) & ~3,
@@ -48,7 +50,7 @@ BYTES_PER_ROW = [
 ]
 
 
-def sz(s, o):
+def sz(s: bytes, o: int) -> bytes:
     return s[o : s.index(b"\0", o)]
 
 
@@ -57,7 +59,7 @@ class PcfFontFile(FontFile.FontFile):
 
     name = "name"
 
-    def __init__(self, fp, charset_encoding="iso8859-1"):
+    def __init__(self, fp: BinaryIO, charset_encoding: str = "iso8859-1"):
         self.charset_encoding = charset_encoding
 
         magic = l32(fp.read(4))
@@ -103,7 +105,9 @@ class PcfFontFile(FontFile.FontFile):
                     bitmaps[ix],
                 )
 
-    def _getformat(self, tag):
+    def _getformat(
+        self, tag: int
+    ) -> tuple[BinaryIO, int, Callable[[bytes], int], Callable[[bytes], int]]:
         format, size, offset = self.toc[tag]
 
         fp = self.fp
@@ -118,7 +122,7 @@ class PcfFontFile(FontFile.FontFile):
 
         return fp, format, i16, i32
 
-    def _load_properties(self):
+    def _load_properties(self) -> dict[bytes, bytes | int]:
         #
         # font properties
 
@@ -129,27 +133,24 @@ class PcfFontFile(FontFile.FontFile):
         nprops = i32(fp.read(4))
 
         # read property description
-        p = []
-        for i in range(nprops):
-            p.append((i32(fp.read(4)), i8(fp.read(1)), i32(fp.read(4))))
+        p = [(i32(fp.read(4)), i8(fp.read(1)), i32(fp.read(4))) for _ in range(nprops)]
+
         if nprops & 3:
             fp.seek(4 - (nprops & 3), io.SEEK_CUR)  # pad
 
         data = fp.read(i32(fp.read(4)))
 
         for k, s, v in p:
-            k = sz(data, k)
-            if s:
-                v = sz(data, v)
-            properties[k] = v
+            property_value: bytes | int = sz(data, v) if s else v
+            properties[sz(data, k)] = property_value
 
         return properties
 
-    def _load_metrics(self):
+    def _load_metrics(self) -> list[tuple[int, int, int, int, int, int, int, int]]:
         #
         # font metrics
 
-        metrics = []
+        metrics: list[tuple[int, int, int, int, int, int, int, int]] = []
 
         fp, format, i16, i32 = self._getformat(PCF_METRICS)
 
@@ -182,12 +183,12 @@ class PcfFontFile(FontFile.FontFile):
 
         return metrics
 
-    def _load_bitmaps(self, metrics):
+    def _load_bitmaps(
+        self, metrics: list[tuple[int, int, int, int, int, int, int, int]]
+    ) -> list[Image.Image]:
         #
         # bitmap data
 
-        bitmaps = []
-
         fp, format, i16, i32 = self._getformat(PCF_BITMAPS)
 
         nbitmaps = i32(fp.read(4))
@@ -196,13 +197,9 @@ class PcfFontFile(FontFile.FontFile):
             msg = "Wrong number of bitmaps"
             raise OSError(msg)
 
-        offsets = []
-        for i in range(nbitmaps):
-            offsets.append(i32(fp.read(4)))
+        offsets = [i32(fp.read(4)) for _ in range(nbitmaps)]
 
-        bitmap_sizes = []
-        for i in range(4):
-            bitmap_sizes.append(i32(fp.read(4)))
+        bitmap_sizes = [i32(fp.read(4)) for _ in range(4)]
 
         # byteorder = format & 4  # non-zero => MSB
         bitorder = format & 8  # non-zero => MSB
@@ -218,6 +215,7 @@ class PcfFontFile(FontFile.FontFile):
         if bitorder:
             mode = "1"
 
+        bitmaps = []
         for i in range(nbitmaps):
             xsize, ysize = metrics[i][:2]
             b, e = offsets[i : i + 2]
@@ -227,7 +225,7 @@ class PcfFontFile(FontFile.FontFile):
 
         return bitmaps
 
-    def _load_encoding(self):
+    def _load_encoding(self) -> list[int | None]:
         fp, format, i16, i32 = self._getformat(PCF_BDF_ENCODINGS)
 
         first_col, last_col = i16(fp.read(2)), i16(fp.read(2))
@@ -238,7 +236,7 @@ class PcfFontFile(FontFile.FontFile):
         nencoding = (last_col - first_col + 1) * (last_row - first_row + 1)
 
         # map character code to bitmap index
-        encoding = [None] * min(256, nencoding)
+        encoding: list[int | None] = [None] * min(256, nencoding)
 
         encoding_offsets = [i16(fp.read(2)) for _ in range(nencoding)]
 
diff --git a/src/PIL/PcxImagePlugin.py b/src/PIL/PcxImagePlugin.py
index f42c2456b..8445d5cc7 100644
--- a/src/PIL/PcxImagePlugin.py
+++ b/src/PIL/PcxImagePlugin.py
@@ -24,9 +24,11 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import io
 import logging
+from typing import IO
 
 from . import Image, ImageFile, ImagePalette
 from ._binary import i16le as i16
@@ -36,7 +38,7 @@ from ._binary import o16le as o16
 logger = logging.getLogger(__name__)
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[0] == 10 and prefix[1] in [0, 2, 3, 5]
 
 
@@ -48,8 +50,10 @@ class PcxImageFile(ImageFile.ImageFile):
     format = "PCX"
     format_description = "Paintbrush"
 
-    def _open(self):
+    def _open(self) -> None:
         # header
+        assert self.fp is not None
+
         s = self.fp.read(128)
         if not _accept(s):
             msg = "not a PCX file"
@@ -91,7 +95,7 @@ class PcxImageFile(ImageFile.ImageFile):
             self.fp.seek(-769, io.SEEK_END)
             s = self.fp.read(769)
             if len(s) == 769 and s[0] == 12:
-                # check if the palette is linear greyscale
+                # check if the palette is linear grayscale
                 for i in range(256):
                     if s[i * 3 + 1 : i * 3 + 4] != o8(i) * 3:
                         mode = rawmode = "P"
@@ -108,7 +112,7 @@ class PcxImageFile(ImageFile.ImageFile):
             msg = "unknown PCX mode"
             raise OSError(msg)
 
-        self.mode = mode
+        self._mode = mode
         self._size = bbox[2] - bbox[0], bbox[3] - bbox[1]
 
         # Don't trust the passed in stride.
@@ -124,7 +128,9 @@ class PcxImageFile(ImageFile.ImageFile):
         bbox = (0, 0) + self.size
         logger.debug("size: %sx%s", *self.size)
 
-        self.tile = [("pcx", bbox, self.fp.tell(), (rawmode, planes * stride))]
+        self.tile = [
+            ImageFile._Tile("pcx", bbox, self.fp.tell(), (rawmode, planes * stride))
+        ]
 
 
 # --------------------------------------------------------------------
@@ -140,7 +146,7 @@ SAVE = {
 }
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     try:
         version, bits, planes, rawmode = SAVE[im.mode]
     except KeyError as e:
@@ -194,7 +200,9 @@ def _save(im, fp, filename):
 
     assert fp.tell() == 128
 
-    ImageFile._save(im, fp, [("pcx", (0, 0) + im.size, 0, (rawmode, bits * planes))])
+    ImageFile._save(
+        im, fp, [ImageFile._Tile("pcx", (0, 0) + im.size, 0, (rawmode, bits * planes))]
+    )
 
     if im.mode == "P":
         # colour palette
@@ -203,7 +211,7 @@ def _save(im, fp, filename):
         palette += b"\x00" * (768 - len(palette))
         fp.write(palette)  # 768 bytes
     elif im.mode == "L":
-        # greyscale palette
+        # grayscale palette
         fp.write(o8(12))
         for i in range(256):
             fp.write(o8(i) * 3)
diff --git a/src/PIL/PdfImagePlugin.py b/src/PIL/PdfImagePlugin.py
index c41f8aee0..e9c20ddc1 100644
--- a/src/PIL/PdfImagePlugin.py
+++ b/src/PIL/PdfImagePlugin.py
@@ -19,11 +19,13 @@
 ##
 # Image plugin for PDF images (output only).
 ##
+from __future__ import annotations
 
 import io
 import math
 import os
 import time
+from typing import IO, Any
 
 from . import Image, ImageFile, ImageSequence, PdfParser, __version__, features
 
@@ -38,7 +40,7 @@ from . import Image, ImageFile, ImageSequence, PdfParser, __version__, features
 #  5. page contents
 
 
-def _save_all(im, fp, filename):
+def _save_all(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     _save(im, fp, filename, save_all=True)
 
 
@@ -46,12 +48,148 @@ def _save_all(im, fp, filename):
 # (Internal) Image save plugin for the PDF format.
 
 
-def _save(im, fp, filename, save_all=False):
-    is_appending = im.encoderinfo.get("append", False)
-    if is_appending:
-        existing_pdf = PdfParser.PdfParser(f=fp, filename=filename, mode="r+b")
+def _write_image(
+    im: Image.Image,
+    filename: str | bytes,
+    existing_pdf: PdfParser.PdfParser,
+    image_refs: list[PdfParser.IndirectReference],
+) -> tuple[PdfParser.IndirectReference, str]:
+    # FIXME: Should replace ASCIIHexDecode with RunLengthDecode
+    # (packbits) or LZWDecode (tiff/lzw compression).  Note that
+    # PDF 1.2 also supports Flatedecode (zip compression).
+
+    params = None
+    decode = None
+
+    #
+    # Get image characteristics
+
+    width, height = im.size
+
+    dict_obj: dict[str, Any] = {"BitsPerComponent": 8}
+    if im.mode == "1":
+        if features.check("libtiff"):
+            decode_filter = "CCITTFaxDecode"
+            dict_obj["BitsPerComponent"] = 1
+            params = PdfParser.PdfArray(
+                [
+                    PdfParser.PdfDict(
+                        {
+                            "K": -1,
+                            "BlackIs1": True,
+                            "Columns": width,
+                            "Rows": height,
+                        }
+                    )
+                ]
+            )
+        else:
+            decode_filter = "DCTDecode"
+        dict_obj["ColorSpace"] = PdfParser.PdfName("DeviceGray")
+        procset = "ImageB"  # grayscale
+    elif im.mode == "L":
+        decode_filter = "DCTDecode"
+        # params = f"<< /Predictor 15 /Columns {width-2} >>"
+        dict_obj["ColorSpace"] = PdfParser.PdfName("DeviceGray")
+        procset = "ImageB"  # grayscale
+    elif im.mode == "LA":
+        decode_filter = "JPXDecode"
+        # params = f"<< /Predictor 15 /Columns {width-2} >>"
+        procset = "ImageB"  # grayscale
+        dict_obj["SMaskInData"] = 1
+    elif im.mode == "P":
+        decode_filter = "ASCIIHexDecode"
+        palette = im.getpalette()
+        assert palette is not None
+        dict_obj["ColorSpace"] = [
+            PdfParser.PdfName("Indexed"),
+            PdfParser.PdfName("DeviceRGB"),
+            len(palette) // 3 - 1,
+            PdfParser.PdfBinary(palette),
+        ]
+        procset = "ImageI"  # indexed color
+
+        if "transparency" in im.info:
+            smask = im.convert("LA").getchannel("A")
+            smask.encoderinfo = {}
+
+            image_ref = _write_image(smask, filename, existing_pdf, image_refs)[0]
+            dict_obj["SMask"] = image_ref
+    elif im.mode == "RGB":
+        decode_filter = "DCTDecode"
+        dict_obj["ColorSpace"] = PdfParser.PdfName("DeviceRGB")
+        procset = "ImageC"  # color images
+    elif im.mode == "RGBA":
+        decode_filter = "JPXDecode"
+        procset = "ImageC"  # color images
+        dict_obj["SMaskInData"] = 1
+    elif im.mode == "CMYK":
+        decode_filter = "DCTDecode"
+        dict_obj["ColorSpace"] = PdfParser.PdfName("DeviceCMYK")
+        procset = "ImageC"  # color images
+        decode = [1, 0, 1, 0, 1, 0, 1, 0]
     else:
-        existing_pdf = PdfParser.PdfParser(f=fp, filename=filename, mode="w+b")
+        msg = f"cannot save mode {im.mode}"
+        raise ValueError(msg)
+
+    #
+    # image
+
+    op = io.BytesIO()
+
+    if decode_filter == "ASCIIHexDecode":
+        ImageFile._save(im, op, [ImageFile._Tile("hex", (0, 0) + im.size, 0, im.mode)])
+    elif decode_filter == "CCITTFaxDecode":
+        im.save(
+            op,
+            "TIFF",
+            compression="group4",
+            # use a single strip
+            strip_size=math.ceil(width / 8) * height,
+        )
+    elif decode_filter == "DCTDecode":
+        Image.SAVE["JPEG"](im, op, filename)
+    elif decode_filter == "JPXDecode":
+        del dict_obj["BitsPerComponent"]
+        Image.SAVE["JPEG2000"](im, op, filename)
+    else:
+        msg = f"unsupported PDF filter ({decode_filter})"
+        raise ValueError(msg)
+
+    stream = op.getvalue()
+    filter: PdfParser.PdfArray | PdfParser.PdfName
+    if decode_filter == "CCITTFaxDecode":
+        stream = stream[8:]
+        filter = PdfParser.PdfArray([PdfParser.PdfName(decode_filter)])
+    else:
+        filter = PdfParser.PdfName(decode_filter)
+
+    image_ref = image_refs.pop(0)
+    existing_pdf.write_obj(
+        image_ref,
+        stream=stream,
+        Type=PdfParser.PdfName("XObject"),
+        Subtype=PdfParser.PdfName("Image"),
+        Width=width,  # * 72.0 / x_resolution,
+        Height=height,  # * 72.0 / y_resolution,
+        Filter=filter,
+        Decode=decode,
+        DecodeParms=params,
+        **dict_obj,
+    )
+
+    return image_ref, procset
+
+
+def _save(
+    im: Image.Image, fp: IO[bytes], filename: str | bytes, save_all: bool = False
+) -> None:
+    is_appending = im.encoderinfo.get("append", False)
+    filename_str = filename.decode() if isinstance(filename, bytes) else filename
+    if is_appending:
+        existing_pdf = PdfParser.PdfParser(f=fp, filename=filename_str, mode="r+b")
+    else:
+        existing_pdf = PdfParser.PdfParser(f=fp, filename=filename_str, mode="w+b")
 
     dpi = im.encoderinfo.get("dpi")
     if dpi:
@@ -61,9 +199,9 @@ def _save(im, fp, filename, save_all=False):
         x_resolution = y_resolution = im.encoderinfo.get("resolution", 72.0)
 
     info = {
-        "title": None
-        if is_appending
-        else os.path.splitext(os.path.basename(filename))[0],
+        "title": (
+            None if is_appending else os.path.splitext(os.path.basename(filename))[0]
+        ),
         "author": None,
         "subject": None,
         "keywords": None,
@@ -100,15 +238,13 @@ def _save(im, fp, filename, save_all=False):
     for im in ims:
         im_number_of_pages = 1
         if save_all:
-            try:
-                im_number_of_pages = im.n_frames
-            except AttributeError:
-                # Image format does not have n_frames.
-                # It is a single frame image
-                pass
+            im_number_of_pages = getattr(im, "n_frames", 1)
         number_of_pages += im_number_of_pages
         for i in range(im_number_of_pages):
             image_refs.append(existing_pdf.next_object_id(0))
+            if im.mode == "P" and "transparency" in im.info:
+                image_refs.append(existing_pdf.next_object_id(0))
+
             page_refs.append(existing_pdf.next_object_id(0))
             contents_refs.append(existing_pdf.next_object_id(0))
             existing_pdf.pages.append(page_refs[-1])
@@ -119,120 +255,11 @@ def _save(im, fp, filename, save_all=False):
 
     page_number = 0
     for im_sequence in ims:
-        im_pages = ImageSequence.Iterator(im_sequence) if save_all else [im_sequence]
+        im_pages: ImageSequence.Iterator | list[Image.Image] = (
+            ImageSequence.Iterator(im_sequence) if save_all else [im_sequence]
+        )
         for im in im_pages:
-            # FIXME: Should replace ASCIIHexDecode with RunLengthDecode
-            # (packbits) or LZWDecode (tiff/lzw compression).  Note that
-            # PDF 1.2 also supports Flatedecode (zip compression).
-
-            bits = 8
-            params = None
-            decode = None
-
-            #
-            # Get image characteristics
-
-            width, height = im.size
-
-            if im.mode == "1":
-                if features.check("libtiff"):
-                    filter = "CCITTFaxDecode"
-                    bits = 1
-                    params = PdfParser.PdfArray(
-                        [
-                            PdfParser.PdfDict(
-                                {
-                                    "K": -1,
-                                    "BlackIs1": True,
-                                    "Columns": width,
-                                    "Rows": height,
-                                }
-                            )
-                        ]
-                    )
-                else:
-                    filter = "DCTDecode"
-                colorspace = PdfParser.PdfName("DeviceGray")
-                procset = "ImageB"  # grayscale
-            elif im.mode == "L":
-                filter = "DCTDecode"
-                # params = f"<< /Predictor 15 /Columns {width-2} >>"
-                colorspace = PdfParser.PdfName("DeviceGray")
-                procset = "ImageB"  # grayscale
-            elif im.mode == "P":
-                filter = "ASCIIHexDecode"
-                palette = im.getpalette()
-                colorspace = [
-                    PdfParser.PdfName("Indexed"),
-                    PdfParser.PdfName("DeviceRGB"),
-                    255,
-                    PdfParser.PdfBinary(palette),
-                ]
-                procset = "ImageI"  # indexed color
-            elif im.mode == "RGB":
-                filter = "DCTDecode"
-                colorspace = PdfParser.PdfName("DeviceRGB")
-                procset = "ImageC"  # color images
-            elif im.mode == "RGBA":
-                filter = "JPXDecode"
-                colorspace = PdfParser.PdfName("DeviceRGB")
-                procset = "ImageC"  # color images
-            elif im.mode == "CMYK":
-                filter = "DCTDecode"
-                colorspace = PdfParser.PdfName("DeviceCMYK")
-                procset = "ImageC"  # color images
-                decode = [1, 0, 1, 0, 1, 0, 1, 0]
-            else:
-                msg = f"cannot save mode {im.mode}"
-                raise ValueError(msg)
-
-            #
-            # image
-
-            op = io.BytesIO()
-
-            if filter == "ASCIIHexDecode":
-                ImageFile._save(im, op, [("hex", (0, 0) + im.size, 0, im.mode)])
-            elif filter == "CCITTFaxDecode":
-                im.save(
-                    op,
-                    "TIFF",
-                    compression="group4",
-                    # use a single strip
-                    strip_size=math.ceil(im.width / 8) * im.height,
-                )
-            elif filter == "DCTDecode":
-                Image.SAVE["JPEG"](im, op, filename)
-            elif filter == "JPXDecode":
-                Image.SAVE["JPEG2000"](im, op, filename)
-            elif filter == "FlateDecode":
-                ImageFile._save(im, op, [("zip", (0, 0) + im.size, 0, im.mode)])
-            elif filter == "RunLengthDecode":
-                ImageFile._save(im, op, [("packbits", (0, 0) + im.size, 0, im.mode)])
-            else:
-                msg = f"unsupported PDF filter ({filter})"
-                raise ValueError(msg)
-
-            stream = op.getvalue()
-            if filter == "CCITTFaxDecode":
-                stream = stream[8:]
-                filter = PdfParser.PdfArray([PdfParser.PdfName(filter)])
-            else:
-                filter = PdfParser.PdfName(filter)
-
-            existing_pdf.write_obj(
-                image_refs[page_number],
-                stream=stream,
-                Type=PdfParser.PdfName("XObject"),
-                Subtype=PdfParser.PdfName("Image"),
-                Width=width,  # * 72.0 / x_resolution,
-                Height=height,  # * 72.0 / y_resolution,
-                Filter=filter,
-                BitsPerComponent=bits,
-                Decode=decode,
-                DecodeParms=params,
-                ColorSpace=colorspace,
-            )
+            image_ref, procset = _write_image(im, filename, existing_pdf, image_refs)
 
             #
             # page
@@ -241,13 +268,13 @@ def _save(im, fp, filename, save_all=False):
                 page_refs[page_number],
                 Resources=PdfParser.PdfDict(
                     ProcSet=[PdfParser.PdfName("PDF"), PdfParser.PdfName(procset)],
-                    XObject=PdfParser.PdfDict(image=image_refs[page_number]),
+                    XObject=PdfParser.PdfDict(image=image_ref),
                 ),
                 MediaBox=[
                     0,
                     0,
-                    width * 72.0 / x_resolution,
-                    height * 72.0 / y_resolution,
+                    im.width * 72.0 / x_resolution,
+                    im.height * 72.0 / y_resolution,
                 ],
                 Contents=contents_refs[page_number],
             )
@@ -256,8 +283,8 @@ def _save(im, fp, filename, save_all=False):
             # page contents
 
             page_contents = b"q %f 0 0 %f 0 0 cm /image Do Q\n" % (
-                width * 72.0 / x_resolution,
-                height * 72.0 / y_resolution,
+                im.width * 72.0 / x_resolution,
+                im.height * 72.0 / y_resolution,
             )
 
             existing_pdf.write_obj(contents_refs[page_number], stream=page_contents)
diff --git a/src/PIL/PdfParser.py b/src/PIL/PdfParser.py
index dc1012f54..7cb2d241b 100644
--- a/src/PIL/PdfParser.py
+++ b/src/PIL/PdfParser.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import calendar
 import codecs
 import collections
@@ -6,11 +8,12 @@ import os
 import re
 import time
 import zlib
+from typing import IO, TYPE_CHECKING, Any, NamedTuple, Union
 
 
 # see 7.9.2.2 Text String Type on page 86 and D.3 PDFDocEncoding Character Set
 # on page 656
-def encode_text(s):
+def encode_text(s: str) -> bytes:
     return codecs.BOM_UTF16_BE + s.encode("utf_16_be")
 
 
@@ -59,7 +62,7 @@ PDFDocEncoding = {
 }
 
 
-def decode_text(b):
+def decode_text(b: bytes) -> str:
     if b[: len(codecs.BOM_UTF16_BE)] == codecs.BOM_UTF16_BE:
         return b[len(codecs.BOM_UTF16_BE) :].decode("utf_16_be")
     else:
@@ -73,47 +76,53 @@ class PdfFormatError(RuntimeError):
     pass
 
 
-def check_format_condition(condition, error_message):
+def check_format_condition(condition: bool, error_message: str) -> None:
     if not condition:
         raise PdfFormatError(error_message)
 
 
-class IndirectReference(
-    collections.namedtuple("IndirectReferenceTuple", ["object_id", "generation"])
-):
-    def __str__(self):
-        return "%s %s R" % self
+class IndirectReferenceTuple(NamedTuple):
+    object_id: int
+    generation: int
 
-    def __bytes__(self):
+
+class IndirectReference(IndirectReferenceTuple):
+    def __str__(self) -> str:
+        return f"{self.object_id} {self.generation} R"
+
+    def __bytes__(self) -> bytes:
         return self.__str__().encode("us-ascii")
 
-    def __eq__(self, other):
-        return (
-            other.__class__ is self.__class__
-            and other.object_id == self.object_id
-            and other.generation == self.generation
-        )
+    def __eq__(self, other: object) -> bool:
+        if self.__class__ is not other.__class__:
+            return False
+        assert isinstance(other, IndirectReference)
+        return other.object_id == self.object_id and other.generation == self.generation
 
-    def __ne__(self, other):
+    def __ne__(self, other: object) -> bool:
         return not (self == other)
 
-    def __hash__(self):
+    def __hash__(self) -> int:
         return hash((self.object_id, self.generation))
 
 
 class IndirectObjectDef(IndirectReference):
-    def __str__(self):
-        return "%s %s obj" % self
+    def __str__(self) -> str:
+        return f"{self.object_id} {self.generation} obj"
 
 
 class XrefTable:
-    def __init__(self):
-        self.existing_entries = {}  # object ID => (offset, generation)
-        self.new_entries = {}  # object ID => (offset, generation)
+    def __init__(self) -> None:
+        self.existing_entries: dict[int, tuple[int, int]] = (
+            {}
+        )  # object ID => (offset, generation)
+        self.new_entries: dict[int, tuple[int, int]] = (
+            {}
+        )  # object ID => (offset, generation)
         self.deleted_entries = {0: 65536}  # object ID => generation
         self.reading_finished = False
 
-    def __setitem__(self, key, value):
+    def __setitem__(self, key: int, value: tuple[int, int]) -> None:
         if self.reading_finished:
             self.new_entries[key] = value
         else:
@@ -121,13 +130,13 @@ class XrefTable:
         if key in self.deleted_entries:
             del self.deleted_entries[key]
 
-    def __getitem__(self, key):
+    def __getitem__(self, key: int) -> tuple[int, int]:
         try:
             return self.new_entries[key]
         except KeyError:
             return self.existing_entries[key]
 
-    def __delitem__(self, key):
+    def __delitem__(self, key: int) -> None:
         if key in self.new_entries:
             generation = self.new_entries[key][1] + 1
             del self.new_entries[key]
@@ -138,34 +147,32 @@ class XrefTable:
         elif key in self.deleted_entries:
             generation = self.deleted_entries[key]
         else:
-            msg = (
-                "object ID " + str(key) + " cannot be deleted because it doesn't exist"
-            )
+            msg = f"object ID {key} cannot be deleted because it doesn't exist"
             raise IndexError(msg)
 
-    def __contains__(self, key):
+    def __contains__(self, key: int) -> bool:
         return key in self.existing_entries or key in self.new_entries
 
-    def __len__(self):
+    def __len__(self) -> int:
         return len(
             set(self.existing_entries.keys())
             | set(self.new_entries.keys())
             | set(self.deleted_entries.keys())
         )
 
-    def keys(self):
+    def keys(self) -> set[int]:
         return (
             set(self.existing_entries.keys()) - set(self.deleted_entries.keys())
         ) | set(self.new_entries.keys())
 
-    def write(self, f):
+    def write(self, f: IO[bytes]) -> int:
         keys = sorted(set(self.new_entries.keys()) | set(self.deleted_entries.keys()))
         deleted_keys = sorted(set(self.deleted_entries.keys()))
         startxref = f.tell()
         f.write(b"xref\n")
         while keys:
             # find a contiguous sequence of object IDs
-            prev = None
+            prev: int | None = None
             for index, key in enumerate(keys):
                 if prev is None or prev + 1 == key:
                     prev = key
@@ -175,7 +182,7 @@ class XrefTable:
                     break
             else:
                 contiguous_keys = keys
-                keys = None
+                keys = []
             f.write(b"%d %d\n" % (contiguous_keys[0], len(contiguous_keys)))
             for object_id in contiguous_keys:
                 if object_id in self.new_entries:
@@ -199,7 +206,9 @@ class XrefTable:
 
 
 class PdfName:
-    def __init__(self, name):
+    name: bytes
+
+    def __init__(self, name: PdfName | bytes | str) -> None:
         if isinstance(name, PdfName):
             self.name = name.name
         elif isinstance(name, bytes):
@@ -207,27 +216,27 @@ class PdfName:
         else:
             self.name = name.encode("us-ascii")
 
-    def name_as_str(self):
+    def name_as_str(self) -> str:
         return self.name.decode("us-ascii")
 
-    def __eq__(self, other):
+    def __eq__(self, other: object) -> bool:
         return (
             isinstance(other, PdfName) and other.name == self.name
         ) or other == self.name
 
-    def __hash__(self):
+    def __hash__(self) -> int:
         return hash(self.name)
 
-    def __repr__(self):
-        return f"PdfName({repr(self.name)})"
+    def __repr__(self) -> str:
+        return f"{self.__class__.__name__}({repr(self.name)})"
 
     @classmethod
-    def from_pdf_stream(cls, data):
+    def from_pdf_stream(cls, data: bytes) -> PdfName:
         return cls(PdfParser.interpret_name(data))
 
     allowed_chars = set(range(33, 127)) - {ord(c) for c in "#%/()<>[]{}"}
 
-    def __bytes__(self):
+    def __bytes__(self) -> bytes:
         result = bytearray(b"/")
         for b in self.name:
             if b in self.allowed_chars:
@@ -237,19 +246,25 @@ class PdfName:
         return bytes(result)
 
 
-class PdfArray(list):
-    def __bytes__(self):
+class PdfArray(list[Any]):
+    def __bytes__(self) -> bytes:
         return b"[ " + b" ".join(pdf_repr(x) for x in self) + b" ]"
 
 
-class PdfDict(collections.UserDict):
-    def __setattr__(self, key, value):
+if TYPE_CHECKING:
+    _DictBase = collections.UserDict[Union[str, bytes], Any]
+else:
+    _DictBase = collections.UserDict
+
+
+class PdfDict(_DictBase):
+    def __setattr__(self, key: str, value: Any) -> None:
         if key == "data":
             collections.UserDict.__setattr__(self, key, value)
         else:
             self[key.encode("us-ascii")] = value
 
-    def __getattr__(self, key):
+    def __getattr__(self, key: str) -> str | time.struct_time:
         try:
             value = self[key.encode("us-ascii")]
         except KeyError as e:
@@ -276,7 +291,7 @@ class PdfDict(collections.UserDict):
                 value = time.gmtime(calendar.timegm(value) + offset)
         return value
 
-    def __bytes__(self):
+    def __bytes__(self) -> bytes:
         out = bytearray(b"<<")
         for key, value in self.items():
             if value is None:
@@ -291,35 +306,35 @@ class PdfDict(collections.UserDict):
 
 
 class PdfBinary:
-    def __init__(self, data):
+    def __init__(self, data: list[int] | bytes) -> None:
         self.data = data
 
-    def __bytes__(self):
+    def __bytes__(self) -> bytes:
         return b"<%s>" % b"".join(b"%02X" % b for b in self.data)
 
 
 class PdfStream:
-    def __init__(self, dictionary, buf):
+    def __init__(self, dictionary: PdfDict, buf: bytes) -> None:
         self.dictionary = dictionary
         self.buf = buf
 
-    def decode(self):
+    def decode(self) -> bytes:
         try:
-            filter = self.dictionary.Filter
-        except AttributeError:
+            filter = self.dictionary[b"Filter"]
+        except KeyError:
             return self.buf
         if filter == b"FlateDecode":
             try:
-                expected_length = self.dictionary.DL
-            except AttributeError:
-                expected_length = self.dictionary.Length
+                expected_length = self.dictionary[b"DL"]
+            except KeyError:
+                expected_length = self.dictionary[b"Length"]
             return zlib.decompress(self.buf, bufsize=int(expected_length))
         else:
-            msg = f"stream filter {repr(self.dictionary.Filter)} unknown/unsupported"
+            msg = f"stream filter {repr(filter)} unknown/unsupported"
             raise NotImplementedError(msg)
 
 
-def pdf_repr(x):
+def pdf_repr(x: Any) -> bytes:
     if x is True:
         return b"true"
     elif x is False:
@@ -354,12 +369,19 @@ class PdfParser:
     Supports PDF up to 1.4
     """
 
-    def __init__(self, filename=None, f=None, buf=None, start_offset=0, mode="rb"):
+    def __init__(
+        self,
+        filename: str | None = None,
+        f: IO[bytes] | None = None,
+        buf: bytes | bytearray | None = None,
+        start_offset: int = 0,
+        mode: str = "rb",
+    ) -> None:
         if buf and f:
             msg = "specify buf or f or filename, but not both buf and f"
             raise RuntimeError(msg)
         self.filename = filename
-        self.buf = buf
+        self.buf: bytes | bytearray | mmap.mmap | None = buf
         self.f = f
         self.start_offset = start_offset
         self.should_close_buf = False
@@ -368,12 +390,16 @@ class PdfParser:
             self.f = f = open(filename, mode)
             self.should_close_file = True
         if f is not None:
-            self.buf = buf = self.get_buf_from_file(f)
+            self.buf = self.get_buf_from_file(f)
             self.should_close_buf = True
             if not filename and hasattr(f, "name"):
                 self.filename = f.name
-        self.cached_objects = {}
-        if buf:
+        self.cached_objects: dict[IndirectReference, Any] = {}
+        self.root_ref: IndirectReference | None
+        self.info_ref: IndirectReference | None
+        self.pages_ref: IndirectReference | None
+        self.last_xref_section_offset: int | None
+        if self.buf:
             self.read_pdf_info()
         else:
             self.file_size_total = self.file_size_this = 0
@@ -381,52 +407,53 @@ class PdfParser:
             self.root_ref = None
             self.info = PdfDict()
             self.info_ref = None
-            self.page_tree_root = {}
-            self.pages = []
-            self.orig_pages = []
+            self.page_tree_root = PdfDict()
+            self.pages: list[IndirectReference] = []
+            self.orig_pages: list[IndirectReference] = []
             self.pages_ref = None
             self.last_xref_section_offset = None
-            self.trailer_dict = {}
+            self.trailer_dict: dict[bytes, Any] = {}
             self.xref_table = XrefTable()
         self.xref_table.reading_finished = True
         if f:
             self.seek_end()
 
-    def __enter__(self):
+    def __enter__(self) -> PdfParser:
         return self
 
-    def __exit__(self, exc_type, exc_value, traceback):
+    def __exit__(self, *args: object) -> None:
         self.close()
-        return False  # do not suppress exceptions
 
-    def start_writing(self):
+    def start_writing(self) -> None:
         self.close_buf()
         self.seek_end()
 
-    def close_buf(self):
-        try:
+    def close_buf(self) -> None:
+        if isinstance(self.buf, mmap.mmap):
             self.buf.close()
-        except AttributeError:
-            pass
         self.buf = None
 
-    def close(self):
+    def close(self) -> None:
         if self.should_close_buf:
             self.close_buf()
         if self.f is not None and self.should_close_file:
             self.f.close()
             self.f = None
 
-    def seek_end(self):
+    def seek_end(self) -> None:
+        assert self.f is not None
         self.f.seek(0, os.SEEK_END)
 
-    def write_header(self):
+    def write_header(self) -> None:
+        assert self.f is not None
         self.f.write(b"%PDF-1.4\n")
 
-    def write_comment(self, s):
+    def write_comment(self, s: str) -> None:
+        assert self.f is not None
         self.f.write(f"% {s}\n".encode())
 
-    def write_catalog(self):
+    def write_catalog(self) -> IndirectReference:
+        assert self.f is not None
         self.del_root()
         self.root_ref = self.next_object_id(self.f.tell())
         self.pages_ref = self.next_object_id(0)
@@ -440,7 +467,7 @@ class PdfParser:
         )
         return self.root_ref
 
-    def rewrite_pages(self):
+    def rewrite_pages(self) -> None:
         pages_tree_nodes_to_delete = []
         for i, page_ref in enumerate(self.orig_pages):
             page_info = self.cached_objects[page_ref]
@@ -469,7 +496,10 @@ class PdfParser:
                 pages_tree_node_ref = pages_tree_node.get(b"Parent", None)
         self.orig_pages = []
 
-    def write_xref_and_trailer(self, new_root_ref=None):
+    def write_xref_and_trailer(
+        self, new_root_ref: IndirectReference | None = None
+    ) -> None:
+        assert self.f is not None
         if new_root_ref:
             self.del_root()
             self.root_ref = new_root_ref
@@ -477,7 +507,10 @@ class PdfParser:
             self.info_ref = self.write_obj(None, self.info)
         start_xref = self.xref_table.write(self.f)
         num_entries = len(self.xref_table)
-        trailer_dict = {b"Root": self.root_ref, b"Size": num_entries}
+        trailer_dict: dict[str | bytes, Any] = {
+            b"Root": self.root_ref,
+            b"Size": num_entries,
+        }
         if self.last_xref_section_offset is not None:
             trailer_dict[b"Prev"] = self.last_xref_section_offset
         if self.info:
@@ -489,16 +522,20 @@ class PdfParser:
             + b"\nstartxref\n%d\n%%%%EOF" % start_xref
         )
 
-    def write_page(self, ref, *objs, **dict_obj):
-        if isinstance(ref, int):
-            ref = self.pages[ref]
+    def write_page(
+        self, ref: int | IndirectReference | None, *objs: Any, **dict_obj: Any
+    ) -> IndirectReference:
+        obj_ref = self.pages[ref] if isinstance(ref, int) else ref
         if "Type" not in dict_obj:
             dict_obj["Type"] = PdfName(b"Page")
         if "Parent" not in dict_obj:
             dict_obj["Parent"] = self.pages_ref
-        return self.write_obj(ref, *objs, **dict_obj)
+        return self.write_obj(obj_ref, *objs, **dict_obj)
 
-    def write_obj(self, ref, *objs, **dict_obj):
+    def write_obj(
+        self, ref: IndirectReference | None, *objs: Any, **dict_obj: Any
+    ) -> IndirectReference:
+        assert self.f is not None
         f = self.f
         if ref is None:
             ref = self.next_object_id(f.tell())
@@ -519,14 +556,14 @@ class PdfParser:
         f.write(b"endobj\n")
         return ref
 
-    def del_root(self):
+    def del_root(self) -> None:
         if self.root_ref is None:
             return
         del self.xref_table[self.root_ref.object_id]
         del self.xref_table[self.root[b"Pages"].object_id]
 
     @staticmethod
-    def get_buf_from_file(f):
+    def get_buf_from_file(f: IO[bytes]) -> bytes | mmap.mmap:
         if hasattr(f, "getbuffer"):
             return f.getbuffer()
         elif hasattr(f, "getvalue"):
@@ -537,11 +574,16 @@ class PdfParser:
             except ValueError:  # cannot mmap an empty file
                 return b""
 
-    def read_pdf_info(self):
+    def read_pdf_info(self) -> None:
+        assert self.buf is not None
         self.file_size_total = len(self.buf)
         self.file_size_this = self.file_size_total - self.start_offset
         self.read_trailer()
+        check_format_condition(
+            self.trailer_dict.get(b"Root") is not None, "Root is missing"
+        )
         self.root_ref = self.trailer_dict[b"Root"]
+        assert self.root_ref is not None
         self.info_ref = self.trailer_dict.get(b"Info", None)
         self.root = PdfDict(self.read_indirect(self.root_ref))
         if self.info_ref is None:
@@ -552,12 +594,15 @@ class PdfParser:
         check_format_condition(
             self.root[b"Type"] == b"Catalog", "/Type in Root is not /Catalog"
         )
-        check_format_condition(b"Pages" in self.root, "/Pages missing in Root")
+        check_format_condition(
+            self.root.get(b"Pages") is not None, "/Pages missing in Root"
+        )
         check_format_condition(
             isinstance(self.root[b"Pages"], IndirectReference),
             "/Pages in Root is not an indirect reference",
         )
         self.pages_ref = self.root[b"Pages"]
+        assert self.pages_ref is not None
         self.page_tree_root = self.read_indirect(self.pages_ref)
         self.pages = self.linearize_page_tree(self.page_tree_root)
         # save the original list of page references
@@ -565,7 +610,7 @@ class PdfParser:
         # and we need to rewrite the pages and their list
         self.orig_pages = self.pages[:]
 
-    def next_object_id(self, offset=None):
+    def next_object_id(self, offset: int | None = None) -> IndirectReference:
         try:
             # TODO: support reuse of deleted objects
             reference = IndirectReference(max(self.xref_table.keys()) + 1, 0)
@@ -615,12 +660,13 @@ class PdfParser:
         re.DOTALL,
     )
 
-    def read_trailer(self):
+    def read_trailer(self) -> None:
+        assert self.buf is not None
         search_start_offset = len(self.buf) - 16384
         if search_start_offset < self.start_offset:
             search_start_offset = self.start_offset
         m = self.re_trailer_end.search(self.buf, search_start_offset)
-        check_format_condition(m, "trailer end not found")
+        check_format_condition(m is not None, "trailer end not found")
         # make sure we found the LAST trailer
         last_match = m
         while m:
@@ -628,6 +674,7 @@ class PdfParser:
             m = self.re_trailer_end.search(self.buf, m.start() + 16)
         if not m:
             m = last_match
+        assert m is not None
         trailer_data = m.group(1)
         self.last_xref_section_offset = int(m.group(2))
         self.trailer_dict = self.interpret_trailer(trailer_data)
@@ -636,12 +683,14 @@ class PdfParser:
         if b"Prev" in self.trailer_dict:
             self.read_prev_trailer(self.trailer_dict[b"Prev"])
 
-    def read_prev_trailer(self, xref_section_offset):
+    def read_prev_trailer(self, xref_section_offset: int) -> None:
+        assert self.buf is not None
         trailer_offset = self.read_xref_table(xref_section_offset=xref_section_offset)
         m = self.re_trailer_prev.search(
             self.buf[trailer_offset : trailer_offset + 16384]
         )
-        check_format_condition(m, "previous trailer not found")
+        check_format_condition(m is not None, "previous trailer not found")
+        assert m is not None
         trailer_data = m.group(1)
         check_format_condition(
             int(m.group(2)) == xref_section_offset,
@@ -662,7 +711,7 @@ class PdfParser:
     re_dict_end = re.compile(whitespace_optional + rb">>" + whitespace_optional)
 
     @classmethod
-    def interpret_trailer(cls, trailer_data):
+    def interpret_trailer(cls, trailer_data: bytes) -> dict[bytes, Any]:
         trailer = {}
         offset = 0
         while True:
@@ -670,14 +719,18 @@ class PdfParser:
             if not m:
                 m = cls.re_dict_end.match(trailer_data, offset)
                 check_format_condition(
-                    m and m.end() == len(trailer_data),
+                    m is not None and m.end() == len(trailer_data),
                     "name not found in trailer, remaining data: "
                     + repr(trailer_data[offset:]),
                 )
                 break
             key = cls.interpret_name(m.group(1))
-            value, offset = cls.get_value(trailer_data, m.end())
+            assert isinstance(key, bytes)
+            value, value_offset = cls.get_value(trailer_data, m.end())
             trailer[key] = value
+            if value_offset is None:
+                break
+            offset = value_offset
         check_format_condition(
             b"Size" in trailer and isinstance(trailer[b"Size"], int),
             "/Size not in trailer or not an integer",
@@ -691,7 +744,7 @@ class PdfParser:
     re_hashes_in_name = re.compile(rb"([^#]*)(#([0-9a-fA-F]{2}))?")
 
     @classmethod
-    def interpret_name(cls, raw, as_text=False):
+    def interpret_name(cls, raw: bytes, as_text: bool = False) -> str | bytes:
         name = b""
         for m in cls.re_hashes_in_name.finditer(raw):
             if m.group(3):
@@ -753,7 +806,13 @@ class PdfParser:
     )
 
     @classmethod
-    def get_value(cls, data, offset, expect_indirect=None, max_nesting=-1):
+    def get_value(
+        cls,
+        data: bytes | bytearray | mmap.mmap,
+        offset: int,
+        expect_indirect: IndirectReference | None = None,
+        max_nesting: int = -1,
+    ) -> tuple[Any, int | None]:
         if max_nesting == 0:
             return None, None
         m = cls.re_comment.match(data, offset)
@@ -775,11 +834,16 @@ class PdfParser:
                 == IndirectReference(int(m.group(1)), int(m.group(2))),
                 "indirect object definition different than expected",
             )
-            object, offset = cls.get_value(data, m.end(), max_nesting=max_nesting - 1)
-            if offset is None:
+            object, object_offset = cls.get_value(
+                data, m.end(), max_nesting=max_nesting - 1
+            )
+            if object_offset is None:
                 return object, None
-            m = cls.re_indirect_def_end.match(data, offset)
-            check_format_condition(m, "indirect object definition end not found")
+            m = cls.re_indirect_def_end.match(data, object_offset)
+            check_format_condition(
+                m is not None, "indirect object definition end not found"
+            )
+            assert m is not None
             return object, m.end()
         check_format_condition(
             not expect_indirect, "indirect object definition not found"
@@ -798,47 +862,53 @@ class PdfParser:
         m = cls.re_dict_start.match(data, offset)
         if m:
             offset = m.end()
-            result = {}
+            result: dict[Any, Any] = {}
             m = cls.re_dict_end.match(data, offset)
+            current_offset: int | None = offset
             while not m:
-                key, offset = cls.get_value(data, offset, max_nesting=max_nesting - 1)
-                if offset is None:
+                assert current_offset is not None
+                key, current_offset = cls.get_value(
+                    data, current_offset, max_nesting=max_nesting - 1
+                )
+                if current_offset is None:
                     return result, None
-                value, offset = cls.get_value(data, offset, max_nesting=max_nesting - 1)
+                value, current_offset = cls.get_value(
+                    data, current_offset, max_nesting=max_nesting - 1
+                )
                 result[key] = value
-                if offset is None:
+                if current_offset is None:
                     return result, None
-                m = cls.re_dict_end.match(data, offset)
-            offset = m.end()
-            m = cls.re_stream_start.match(data, offset)
+                m = cls.re_dict_end.match(data, current_offset)
+            current_offset = m.end()
+            m = cls.re_stream_start.match(data, current_offset)
             if m:
-                try:
-                    stream_len = int(result[b"Length"])
-                except (TypeError, KeyError, ValueError) as e:
-                    msg = "bad or missing Length in stream dict (%r)" % result.get(
-                        b"Length", None
-                    )
-                    raise PdfFormatError(msg) from e
+                stream_len = result.get(b"Length")
+                if stream_len is None or not isinstance(stream_len, int):
+                    msg = f"bad or missing Length in stream dict ({stream_len})"
+                    raise PdfFormatError(msg)
                 stream_data = data[m.end() : m.end() + stream_len]
                 m = cls.re_stream_end.match(data, m.end() + stream_len)
-                check_format_condition(m, "stream end not found")
-                offset = m.end()
-                result = PdfStream(PdfDict(result), stream_data)
-            else:
-                result = PdfDict(result)
-            return result, offset
+                check_format_condition(m is not None, "stream end not found")
+                assert m is not None
+                current_offset = m.end()
+                return PdfStream(PdfDict(result), stream_data), current_offset
+            return PdfDict(result), current_offset
         m = cls.re_array_start.match(data, offset)
         if m:
             offset = m.end()
-            result = []
+            results = []
             m = cls.re_array_end.match(data, offset)
+            current_offset = offset
             while not m:
-                value, offset = cls.get_value(data, offset, max_nesting=max_nesting - 1)
-                result.append(value)
-                if offset is None:
-                    return result, None
-                m = cls.re_array_end.match(data, offset)
-            return result, m.end()
+                assert current_offset is not None
+                value, current_offset = cls.get_value(
+                    data, current_offset, max_nesting=max_nesting - 1
+                )
+                results.append(value)
+                if current_offset is None:
+                    return results, None
+                m = cls.re_array_end.match(data, current_offset)
+            return results, m.end()
         m = cls.re_null.match(data, offset)
         if m:
             return None, m.end()
@@ -872,7 +942,7 @@ class PdfParser:
         if m:
             return cls.get_literal_string(data, m.end())
         # return None, offset  # fallback (only for debugging)
-        msg = "unrecognized object: " + repr(data[offset : offset + 32])
+        msg = f"unrecognized object: {repr(data[offset : offset + 32])}"
         raise PdfFormatError(msg)
 
     re_lit_str_token = re.compile(
@@ -898,7 +968,9 @@ class PdfParser:
     }
 
     @classmethod
-    def get_literal_string(cls, data, offset):
+    def get_literal_string(
+        cls, data: bytes | bytearray | mmap.mmap, offset: int
+    ) -> tuple[bytes, int]:
         nesting_depth = 0
         result = bytearray()
         for m in cls.re_lit_str_token.finditer(data, offset):
@@ -934,12 +1006,14 @@ class PdfParser:
     )
     re_xref_entry = re.compile(rb"([0-9]{10}) ([0-9]{5}) ([fn])( \r| \n|\r\n)")
 
-    def read_xref_table(self, xref_section_offset):
+    def read_xref_table(self, xref_section_offset: int) -> int:
+        assert self.buf is not None
         subsection_found = False
         m = self.re_xref_section_start.match(
             self.buf, xref_section_offset + self.start_offset
         )
-        check_format_condition(m, "xref section start not found")
+        check_format_condition(m is not None, "xref section start not found")
+        assert m is not None
         offset = m.end()
         while True:
             m = self.re_xref_subsection_start.match(self.buf, offset)
@@ -954,7 +1028,8 @@ class PdfParser:
             num_objects = int(m.group(2))
             for i in range(first_object, first_object + num_objects):
                 m = self.re_xref_entry.match(self.buf, offset)
-                check_format_condition(m, "xref entry not found")
+                check_format_condition(m is not None, "xref entry not found")
+                assert m is not None
                 offset = m.end()
                 is_free = m.group(3) == b"f"
                 if not is_free:
@@ -964,13 +1039,14 @@ class PdfParser:
                         self.xref_table[i] = new_entry
         return offset
 
-    def read_indirect(self, ref, max_nesting=-1):
+    def read_indirect(self, ref: IndirectReference, max_nesting: int = -1) -> Any:
         offset, generation = self.xref_table[ref[0]]
         check_format_condition(
             generation == ref[1],
             f"expected to find generation {ref[1]} for object ID {ref[0]} in xref "
             f"table, instead found generation {generation} at offset {offset}",
         )
+        assert self.buf is not None
         value = self.get_value(
             self.buf,
             offset + self.start_offset,
@@ -980,14 +1056,15 @@ class PdfParser:
         self.cached_objects[ref] = value
         return value
 
-    def linearize_page_tree(self, node=None):
-        if node is None:
-            node = self.page_tree_root
+    def linearize_page_tree(
+        self, node: PdfDict | None = None
+    ) -> list[IndirectReference]:
+        page_node = node if node is not None else self.page_tree_root
         check_format_condition(
-            node[b"Type"] == b"Pages", "/Type of page tree node is not /Pages"
+            page_node[b"Type"] == b"Pages", "/Type of page tree node is not /Pages"
         )
         pages = []
-        for kid in node[b"Kids"]:
+        for kid in page_node[b"Kids"]:
             kid_object = self.read_indirect(kid)
             if kid_object[b"Type"] == b"Page":
                 pages.append(kid)
diff --git a/src/PIL/PixarImagePlugin.py b/src/PIL/PixarImagePlugin.py
index 7eb82228a..36f565f1c 100644
--- a/src/PIL/PixarImagePlugin.py
+++ b/src/PIL/PixarImagePlugin.py
@@ -18,6 +18,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 from . import Image, ImageFile
 from ._binary import i16le as i16
@@ -26,7 +27,7 @@ from ._binary import i16le as i16
 # helpers
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] == b"\200\350\000\000"
 
 
@@ -38,8 +39,10 @@ class PixarImageFile(ImageFile.ImageFile):
     format = "PIXAR"
     format_description = "PIXAR raster image"
 
-    def _open(self):
+    def _open(self) -> None:
         # assuming a 4-byte magic label
+        assert self.fp is not None
+
         s = self.fp.read(4)
         if not _accept(s):
             msg = "not a PIXAR file"
@@ -54,11 +57,13 @@ class PixarImageFile(ImageFile.ImageFile):
         mode = i16(s, 424), i16(s, 426)
 
         if mode == (14, 2):
-            self.mode = "RGB"
+            self._mode = "RGB"
         # FIXME: to be continued...
 
         # create tile descriptor (assuming "dumped")
-        self.tile = [("raw", (0, 0) + self.size, 1024, (self.mode, 0, 1))]
+        self.tile = [
+            ImageFile._Tile("raw", (0, 0) + self.size, 1024, (self.mode, 0, 1))
+        ]
 
 
 #
diff --git a/src/PIL/PngImagePlugin.py b/src/PIL/PngImagePlugin.py
index aaf242b1d..4e1227204 100644
--- a/src/PIL/PngImagePlugin.py
+++ b/src/PIL/PngImagePlugin.py
@@ -30,6 +30,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import itertools
 import logging
@@ -37,7 +38,9 @@ import re
 import struct
 import warnings
 import zlib
+from collections.abc import Callable
 from enum import IntEnum
+from typing import IO, TYPE_CHECKING, Any, NamedTuple, NoReturn, cast
 
 from . import Image, ImageChops, ImageFile, ImagePalette, ImageSequence
 from ._binary import i16be as i16
@@ -46,6 +49,9 @@ from ._binary import o8
 from ._binary import o16be as o16
 from ._binary import o32be as o32
 
+if TYPE_CHECKING:
+    from . import _imaging
+
 logger = logging.getLogger(__name__)
 
 is_cid = re.compile(rb"\w\w\w\w").match
@@ -56,12 +62,12 @@ _MAGIC = b"\211PNG\r\n\032\n"
 
 _MODES = {
     # supported bits/color combinations, and corresponding modes/rawmodes
-    # Greyscale
+    # Grayscale
     (1, 0): ("1", "1"),
     (2, 0): ("L", "L;2"),
     (4, 0): ("L", "L;4"),
     (8, 0): ("L", "L"),
-    (16, 0): ("I", "I;16B"),
+    (16, 0): ("I;16", "I;16B"),
     # Truecolour
     (8, 2): ("RGB", "RGB"),
     (16, 2): ("RGB", "RGB;16B"),
@@ -70,7 +76,7 @@ _MODES = {
     (2, 3): ("P", "P;2"),
     (4, 3): ("P", "P;4"),
     (8, 3): ("P", "P"),
-    # Greyscale with alpha
+    # Grayscale with alpha
     (8, 4): ("LA", "LA"),
     (16, 4): ("RGBA", "LA;16B"),  # LA;16B->LA not yet available
     # Truecolour with alpha
@@ -130,16 +136,16 @@ class Blend(IntEnum):
     """
 
 
-def _safe_zlib_decompress(s):
+def _safe_zlib_decompress(s: bytes) -> bytes:
     dobj = zlib.decompressobj()
     plaintext = dobj.decompress(s, MAX_TEXT_CHUNK)
     if dobj.unconsumed_tail:
-        msg = "Decompressed Data Too Large"
+        msg = "Decompressed data too large for PngImagePlugin.MAX_TEXT_CHUNK"
         raise ValueError(msg)
     return plaintext
 
 
-def _crc32(data, seed=0):
+def _crc32(data: bytes, seed: int = 0) -> int:
     return zlib.crc32(data, seed) & 0xFFFFFFFF
 
 
@@ -148,14 +154,15 @@ def _crc32(data, seed=0):
 
 
 class ChunkStream:
-    def __init__(self, fp):
-        self.fp = fp
-        self.queue = []
+    def __init__(self, fp: IO[bytes]) -> None:
+        self.fp: IO[bytes] | None = fp
+        self.queue: list[tuple[bytes, int, int]] | None = []
 
-    def read(self):
+    def read(self) -> tuple[bytes, int, int]:
         """Fetch a new chunk. Returns header information."""
         cid = None
 
+        assert self.fp is not None
         if self.queue:
             cid, pos, length = self.queue.pop()
             self.fp.seek(pos)
@@ -172,25 +179,26 @@ class ChunkStream:
 
         return cid, pos, length
 
-    def __enter__(self):
+    def __enter__(self) -> ChunkStream:
         return self
 
-    def __exit__(self, *args):
+    def __exit__(self, *args: object) -> None:
         self.close()
 
-    def close(self):
+    def close(self) -> None:
         self.queue = self.fp = None
 
-    def push(self, cid, pos, length):
+    def push(self, cid: bytes, pos: int, length: int) -> None:
+        assert self.queue is not None
         self.queue.append((cid, pos, length))
 
-    def call(self, cid, pos, length):
+    def call(self, cid: bytes, pos: int, length: int) -> bytes:
         """Call the appropriate chunk handler"""
 
         logger.debug("STREAM %r %s %s", cid, pos, length)
-        return getattr(self, "chunk_" + cid.decode("ascii"))(pos, length)
+        return getattr(self, f"chunk_{cid.decode('ascii')}")(pos, length)
 
-    def crc(self, cid, data):
+    def crc(self, cid: bytes, data: bytes) -> None:
         """Read and verify checksum"""
 
         # Skip CRC checks for ancillary chunks if allowed to load truncated
@@ -200,6 +208,7 @@ class ChunkStream:
             self.crc_skip(cid, data)
             return
 
+        assert self.fp is not None
         try:
             crc1 = _crc32(data, _crc32(cid))
             crc2 = i32(self.fp.read(4))
@@ -210,17 +219,19 @@ class ChunkStream:
             msg = f"broken PNG file (incomplete checksum in {repr(cid)})"
             raise SyntaxError(msg) from e
 
-    def crc_skip(self, cid, data):
+    def crc_skip(self, cid: bytes, data: bytes) -> None:
         """Read checksum"""
 
+        assert self.fp is not None
         self.fp.read(4)
 
-    def verify(self, endchunk=b"IEND"):
+    def verify(self, endchunk: bytes = b"IEND") -> list[bytes]:
         # Simple approach; just calculate checksum for all remaining
         # blocks.  Must be called directly after open.
 
         cids = []
 
+        assert self.fp is not None
         while True:
             try:
                 cid, pos, length = self.read()
@@ -243,8 +254,13 @@ class iTXt(str):
 
     """
 
+    lang: str | bytes | None
+    tkey: str | bytes | None
+
     @staticmethod
-    def __new__(cls, text, lang=None, tkey=None):
+    def __new__(
+        cls, text: str, lang: str | None = None, tkey: str | None = None
+    ) -> iTXt:
         """
         :param cls: the class to use when creating the instance
         :param text: value for this key
@@ -264,10 +280,10 @@ class PngInfo:
 
     """
 
-    def __init__(self):
-        self.chunks = []
+    def __init__(self) -> None:
+        self.chunks: list[tuple[bytes, bytes, bool]] = []
 
-    def add(self, cid, data, after_idat=False):
+    def add(self, cid: bytes, data: bytes, after_idat: bool = False) -> None:
         """Appends an arbitrary chunk. Use with caution.
 
         :param cid: a byte string, 4 bytes long.
@@ -277,12 +293,16 @@ class PngInfo:
 
         """
 
-        chunk = [cid, data]
-        if after_idat:
-            chunk.append(True)
-        self.chunks.append(tuple(chunk))
+        self.chunks.append((cid, data, after_idat))
 
-    def add_itxt(self, key, value, lang="", tkey="", zip=False):
+    def add_itxt(
+        self,
+        key: str | bytes,
+        value: str | bytes,
+        lang: str | bytes = "",
+        tkey: str | bytes = "",
+        zip: bool = False,
+    ) -> None:
         """Appends an iTXt chunk.
 
         :param key: latin-1 encodable text key name
@@ -310,7 +330,9 @@ class PngInfo:
         else:
             self.add(b"iTXt", key + b"\0\0\0" + lang + b"\0" + tkey + b"\0" + value)
 
-    def add_text(self, key, value, zip=False):
+    def add_text(
+        self, key: str | bytes, value: str | bytes | iTXt, zip: bool = False
+    ) -> None:
         """Appends a text chunk.
 
         :param key: latin-1 encodable text key name
@@ -320,7 +342,13 @@ class PngInfo:
 
         """
         if isinstance(value, iTXt):
-            return self.add_itxt(key, value, value.lang, value.tkey, zip=zip)
+            return self.add_itxt(
+                key,
+                value,
+                value.lang if value.lang is not None else b"",
+                value.tkey if value.tkey is not None else b"",
+                zip=zip,
+            )
 
         # The tEXt chunk stores latin-1 text
         if not isinstance(value, bytes):
@@ -342,25 +370,31 @@ class PngInfo:
 # PNG image stream (IHDR/IEND)
 
 
+class _RewindState(NamedTuple):
+    info: dict[str | tuple[int, int], Any]
+    tile: list[ImageFile._Tile]
+    seq_num: int | None
+
+
 class PngStream(ChunkStream):
-    def __init__(self, fp):
+    def __init__(self, fp: IO[bytes]) -> None:
         super().__init__(fp)
 
         # local copies of Image attributes
-        self.im_info = {}
-        self.im_text = {}
+        self.im_info: dict[str | tuple[int, int], Any] = {}
+        self.im_text: dict[str, str | iTXt] = {}
         self.im_size = (0, 0)
-        self.im_mode = None
-        self.im_tile = None
-        self.im_palette = None
-        self.im_custom_mimetype = None
-        self.im_n_frames = None
-        self._seq_num = None
-        self.rewind_state = None
+        self.im_mode = ""
+        self.im_tile: list[ImageFile._Tile] = []
+        self.im_palette: tuple[str, bytes] | None = None
+        self.im_custom_mimetype: str | None = None
+        self.im_n_frames: int | None = None
+        self._seq_num: int | None = None
+        self.rewind_state = _RewindState({}, [], None)
 
         self.text_memory = 0
 
-    def check_text_memory(self, chunklen):
+    def check_text_memory(self, chunklen: int) -> None:
         self.text_memory += chunklen
         if self.text_memory > MAX_TEXT_MEMORY:
             msg = (
@@ -369,20 +403,21 @@ class PngStream(ChunkStream):
             )
             raise ValueError(msg)
 
-    def save_rewind(self):
-        self.rewind_state = {
-            "info": self.im_info.copy(),
-            "tile": self.im_tile,
-            "seq_num": self._seq_num,
-        }
+    def save_rewind(self) -> None:
+        self.rewind_state = _RewindState(
+            self.im_info.copy(),
+            self.im_tile,
+            self._seq_num,
+        )
 
-    def rewind(self):
-        self.im_info = self.rewind_state["info"]
-        self.im_tile = self.rewind_state["tile"]
-        self._seq_num = self.rewind_state["seq_num"]
+    def rewind(self) -> None:
+        self.im_info = self.rewind_state.info.copy()
+        self.im_tile = self.rewind_state.tile
+        self._seq_num = self.rewind_state.seq_num
 
-    def chunk_iCCP(self, pos, length):
+    def chunk_iCCP(self, pos: int, length: int) -> bytes:
         # ICC profile
+        assert self.fp is not None
         s = ImageFile._safe_read(self.fp, length)
         # according to PNG spec, the iCCP chunk contains:
         # Profile name  1-79 bytes (character string)
@@ -391,8 +426,8 @@ class PngStream(ChunkStream):
         # Compressed profile    n bytes (zlib with deflate compression)
         i = s.find(b"\0")
         logger.debug("iCCP profile name %r", s[:i])
-        logger.debug("Compression method %s", s[i])
-        comp_method = s[i]
+        comp_method = s[i + 1]
+        logger.debug("Compression method %s", comp_method)
         if comp_method != 0:
             msg = f"Unknown compression method {comp_method} in iCCP chunk"
             raise SyntaxError(msg)
@@ -408,8 +443,9 @@ class PngStream(ChunkStream):
         self.im_info["icc_profile"] = icc_profile
         return s
 
-    def chunk_IHDR(self, pos, length):
+    def chunk_IHDR(self, pos: int, length: int) -> bytes:
         # image header
+        assert self.fp is not None
         s = ImageFile._safe_read(self.fp, length)
         if length < 13:
             if ImageFile.LOAD_TRUNCATED_IMAGES:
@@ -428,31 +464,34 @@ class PngStream(ChunkStream):
             raise SyntaxError(msg)
         return s
 
-    def chunk_IDAT(self, pos, length):
+    def chunk_IDAT(self, pos: int, length: int) -> NoReturn:
         # image data
         if "bbox" in self.im_info:
-            tile = [("zip", self.im_info["bbox"], pos, self.im_rawmode)]
+            tile = [ImageFile._Tile("zip", self.im_info["bbox"], pos, self.im_rawmode)]
         else:
             if self.im_n_frames is not None:
                 self.im_info["default_image"] = True
-            tile = [("zip", (0, 0) + self.im_size, pos, self.im_rawmode)]
+            tile = [ImageFile._Tile("zip", (0, 0) + self.im_size, pos, self.im_rawmode)]
         self.im_tile = tile
         self.im_idat = length
-        raise EOFError
+        msg = "image data found"
+        raise EOFError(msg)
 
-    def chunk_IEND(self, pos, length):
-        # end of PNG image
-        raise EOFError
+    def chunk_IEND(self, pos: int, length: int) -> NoReturn:
+        msg = "end of PNG image"
+        raise EOFError(msg)
 
-    def chunk_PLTE(self, pos, length):
+    def chunk_PLTE(self, pos: int, length: int) -> bytes:
         # palette
+        assert self.fp is not None
         s = ImageFile._safe_read(self.fp, length)
         if self.im_mode == "P":
             self.im_palette = "RGB", s
         return s
 
-    def chunk_tRNS(self, pos, length):
+    def chunk_tRNS(self, pos: int, length: int) -> bytes:
         # transparency
+        assert self.fp is not None
         s = ImageFile._safe_read(self.fp, length)
         if self.im_mode == "P":
             if _simple_palette.match(s):
@@ -465,34 +504,37 @@ class PngStream(ChunkStream):
                 # otherwise, we have a byte string with one alpha value
                 # for each palette entry
                 self.im_info["transparency"] = s
-        elif self.im_mode in ("1", "L", "I"):
+        elif self.im_mode in ("1", "L", "I;16"):
             self.im_info["transparency"] = i16(s)
         elif self.im_mode == "RGB":
             self.im_info["transparency"] = i16(s), i16(s, 2), i16(s, 4)
         return s
 
-    def chunk_gAMA(self, pos, length):
+    def chunk_gAMA(self, pos: int, length: int) -> bytes:
         # gamma setting
+        assert self.fp is not None
         s = ImageFile._safe_read(self.fp, length)
         self.im_info["gamma"] = i32(s) / 100000.0
         return s
 
-    def chunk_cHRM(self, pos, length):
+    def chunk_cHRM(self, pos: int, length: int) -> bytes:
         # chromaticity, 8 unsigned ints, actual value is scaled by 100,000
         # WP x,y, Red x,y, Green x,y Blue x,y
 
+        assert self.fp is not None
         s = ImageFile._safe_read(self.fp, length)
         raw_vals = struct.unpack(">%dI" % (len(s) // 4), s)
         self.im_info["chromaticity"] = tuple(elt / 100000.0 for elt in raw_vals)
         return s
 
-    def chunk_sRGB(self, pos, length):
+    def chunk_sRGB(self, pos: int, length: int) -> bytes:
         # srgb rendering intent, 1 byte
         # 0 perceptual
         # 1 relative colorimetric
         # 2 saturation
         # 3 absolute colorimetric
 
+        assert self.fp is not None
         s = ImageFile._safe_read(self.fp, length)
         if length < 1:
             if ImageFile.LOAD_TRUNCATED_IMAGES:
@@ -502,8 +544,9 @@ class PngStream(ChunkStream):
         self.im_info["srgb"] = s[0]
         return s
 
-    def chunk_pHYs(self, pos, length):
+    def chunk_pHYs(self, pos: int, length: int) -> bytes:
         # pixels per unit
+        assert self.fp is not None
         s = ImageFile._safe_read(self.fp, length)
         if length < 9:
             if ImageFile.LOAD_TRUNCATED_IMAGES:
@@ -519,8 +562,9 @@ class PngStream(ChunkStream):
             self.im_info["aspect"] = px, py
         return s
 
-    def chunk_tEXt(self, pos, length):
+    def chunk_tEXt(self, pos: int, length: int) -> bytes:
         # text
+        assert self.fp is not None
         s = ImageFile._safe_read(self.fp, length)
         try:
             k, v = s.split(b"\0", 1)
@@ -529,17 +573,18 @@ class PngStream(ChunkStream):
             k = s
             v = b""
         if k:
-            k = k.decode("latin-1", "strict")
+            k_str = k.decode("latin-1", "strict")
             v_str = v.decode("latin-1", "replace")
 
-            self.im_info[k] = v if k == "exif" else v_str
-            self.im_text[k] = v_str
+            self.im_info[k_str] = v if k == b"exif" else v_str
+            self.im_text[k_str] = v_str
             self.check_text_memory(len(v_str))
 
         return s
 
-    def chunk_zTXt(self, pos, length):
+    def chunk_zTXt(self, pos: int, length: int) -> bytes:
         # compressed text
+        assert self.fp is not None
         s = ImageFile._safe_read(self.fp, length)
         try:
             k, v = s.split(b"\0", 1)
@@ -564,16 +609,17 @@ class PngStream(ChunkStream):
             v = b""
 
         if k:
-            k = k.decode("latin-1", "strict")
-            v = v.decode("latin-1", "replace")
+            k_str = k.decode("latin-1", "strict")
+            v_str = v.decode("latin-1", "replace")
 
-            self.im_info[k] = self.im_text[k] = v
-            self.check_text_memory(len(v))
+            self.im_info[k_str] = self.im_text[k_str] = v_str
+            self.check_text_memory(len(v_str))
 
         return s
 
-    def chunk_iTXt(self, pos, length):
+    def chunk_iTXt(self, pos: int, length: int) -> bytes:
         # international text
+        assert self.fp is not None
         r = s = ImageFile._safe_read(self.fp, length)
         try:
             k, r = r.split(b"\0", 1)
@@ -599,26 +645,30 @@ class PngStream(ChunkStream):
                     return s
             else:
                 return s
+        if k == b"XML:com.adobe.xmp":
+            self.im_info["xmp"] = v
         try:
-            k = k.decode("latin-1", "strict")
-            lang = lang.decode("utf-8", "strict")
-            tk = tk.decode("utf-8", "strict")
-            v = v.decode("utf-8", "strict")
+            k_str = k.decode("latin-1", "strict")
+            lang_str = lang.decode("utf-8", "strict")
+            tk_str = tk.decode("utf-8", "strict")
+            v_str = v.decode("utf-8", "strict")
         except UnicodeError:
             return s
 
-        self.im_info[k] = self.im_text[k] = iTXt(v, lang, tk)
-        self.check_text_memory(len(v))
+        self.im_info[k_str] = self.im_text[k_str] = iTXt(v_str, lang_str, tk_str)
+        self.check_text_memory(len(v_str))
 
         return s
 
-    def chunk_eXIf(self, pos, length):
+    def chunk_eXIf(self, pos: int, length: int) -> bytes:
+        assert self.fp is not None
         s = ImageFile._safe_read(self.fp, length)
         self.im_info["exif"] = b"Exif\x00\x00" + s
         return s
 
     # APNG chunks
-    def chunk_acTL(self, pos, length):
+    def chunk_acTL(self, pos: int, length: int) -> bytes:
+        assert self.fp is not None
         s = ImageFile._safe_read(self.fp, length)
         if length < 8:
             if ImageFile.LOAD_TRUNCATED_IMAGES:
@@ -638,7 +688,8 @@ class PngStream(ChunkStream):
         self.im_custom_mimetype = "image/apng"
         return s
 
-    def chunk_fcTL(self, pos, length):
+    def chunk_fcTL(self, pos: int, length: int) -> bytes:
+        assert self.fp is not None
         s = ImageFile._safe_read(self.fp, length)
         if length < 26:
             if ImageFile.LOAD_TRUNCATED_IMAGES:
@@ -667,7 +718,8 @@ class PngStream(ChunkStream):
         self.im_info["blend"] = s[25]
         return s
 
-    def chunk_fdAT(self, pos, length):
+    def chunk_fdAT(self, pos: int, length: int) -> bytes:
+        assert self.fp is not None
         if length < 4:
             if ImageFile.LOAD_TRUNCATED_IMAGES:
                 s = ImageFile._safe_read(self.fp, length)
@@ -687,7 +739,7 @@ class PngStream(ChunkStream):
 # PNG reader
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:8] == _MAGIC
 
 
@@ -699,7 +751,7 @@ class PngImageFile(ImageFile.ImageFile):
     format = "PNG"
     format_description = "Portable network graphics"
 
-    def _open(self):
+    def _open(self) -> None:
         if not _accept(self.fp.read(8)):
             msg = "not a PNG file"
             raise SyntaxError(msg)
@@ -709,8 +761,8 @@ class PngImageFile(ImageFile.ImageFile):
         #
         # Parse headers up to the first IDAT or fDAT chunk
 
-        self.private_chunks = []
-        self.png = PngStream(self.fp)
+        self.private_chunks: list[tuple[bytes, bytes] | tuple[bytes, bytes, bool]] = []
+        self.png: PngStream | None = PngStream(self.fp)
 
         while True:
             #
@@ -737,10 +789,10 @@ class PngImageFile(ImageFile.ImageFile):
         # difficult to break if things go wrong in the decoder...
         # (believe me, I've tried ;-)
 
-        self.mode = self.png.im_mode
+        self._mode = self.png.im_mode
         self._size = self.png.im_size
         self.info = self.png.im_info
-        self._text = None
+        self._text: dict[str, str | iTXt] | None = None
         self.tile = self.png.im_tile
         self.custom_mimetype = self.png.im_custom_mimetype
         self.n_frames = self.png.im_n_frames or 1
@@ -767,7 +819,7 @@ class PngImageFile(ImageFile.ImageFile):
         self.is_animated = self.n_frames > 1
 
     @property
-    def text(self):
+    def text(self) -> dict[str, str | iTXt]:
         # experimental
         if self._text is None:
             # iTxt, tEXt and zTXt chunks may appear at the end of the file
@@ -779,9 +831,10 @@ class PngImageFile(ImageFile.ImageFile):
             self.load()
             if self.is_animated:
                 self.seek(frame)
+        assert self._text is not None
         return self._text
 
-    def verify(self):
+    def verify(self) -> None:
         """Verify PNG file"""
 
         if self.fp is None:
@@ -791,6 +844,7 @@ class PngImageFile(ImageFile.ImageFile):
         # back up to beginning of IDAT block
         self.fp.seek(self.tile[0][2] - 8)
 
+        assert self.png is not None
         self.png.verify()
         self.png.close()
 
@@ -798,7 +852,7 @@ class PngImageFile(ImageFile.ImageFile):
             self.fp.close()
         self.fp = None
 
-    def seek(self, frame):
+    def seek(self, frame: int) -> None:
         if not self._seek_check(frame):
             return
         if frame < self.__frame:
@@ -813,15 +867,17 @@ class PngImageFile(ImageFile.ImageFile):
                 msg = "no more images in APNG file"
                 raise EOFError(msg) from e
 
-    def _seek(self, frame, rewind=False):
+    def _seek(self, frame: int, rewind: bool = False) -> None:
+        assert self.png is not None
+
+        self.dispose: _imaging.ImagingCore | None
+        dispose_extent = None
         if frame == 0:
             if rewind:
                 self._fp.seek(self.__rewind)
                 self.png.rewind()
                 self.__prepare_idat = self.__rewind_idat
-                self.im = None
-                if self.pyaccess:
-                    self.pyaccess = None
+                self._im = None
                 self.info = self.png.im_info
                 self.tile = self.png.im_tile
                 self.fp = self._fp
@@ -830,7 +886,7 @@ class PngImageFile(ImageFile.ImageFile):
             self.default_image = self.info.get("default_image", False)
             self.dispose_op = self.info.get("disposal")
             self.blend_op = self.info.get("blend")
-            self.dispose_extent = self.info.get("bbox")
+            dispose_extent = self.info.get("bbox")
             self.__frame = 0
         else:
             if frame != self.__frame + 1:
@@ -888,28 +944,31 @@ class PngImageFile(ImageFile.ImageFile):
             self.tile = self.png.im_tile
             self.dispose_op = self.info.get("disposal")
             self.blend_op = self.info.get("blend")
-            self.dispose_extent = self.info.get("bbox")
+            dispose_extent = self.info.get("bbox")
 
             if not self.tile:
-                raise EOFError
+                msg = "image not found in APNG frame"
+                raise EOFError(msg)
+        if dispose_extent:
+            self.dispose_extent: tuple[float, float, float, float] = dispose_extent
 
         # setup frame disposal (actual disposal done when needed in the next _seek())
         if self._prev_im is None and self.dispose_op == Disposal.OP_PREVIOUS:
             self.dispose_op = Disposal.OP_BACKGROUND
 
+        self.dispose = None
         if self.dispose_op == Disposal.OP_PREVIOUS:
-            self.dispose = self._prev_im.copy()
-            self.dispose = self._crop(self.dispose, self.dispose_extent)
+            if self._prev_im:
+                self.dispose = self._prev_im.copy()
+                self.dispose = self._crop(self.dispose, self.dispose_extent)
         elif self.dispose_op == Disposal.OP_BACKGROUND:
             self.dispose = Image.core.fill(self.mode, self.size)
             self.dispose = self._crop(self.dispose, self.dispose_extent)
-        else:
-            self.dispose = None
 
-    def tell(self):
+    def tell(self) -> int:
         return self.__frame
 
-    def load_prepare(self):
+    def load_prepare(self) -> None:
         """internal: prepare to read PNG file"""
 
         if self.info.get("interlace"):
@@ -918,9 +977,10 @@ class PngImageFile(ImageFile.ImageFile):
         self.__idat = self.__prepare_idat  # used by load_read()
         ImageFile.ImageFile.load_prepare(self)
 
-    def load_read(self, read_bytes):
+    def load_read(self, read_bytes: int) -> bytes:
         """internal: read more image data"""
 
+        assert self.png is not None
         while self.__idat == 0:
             # end of chunk, skip forward to next one
 
@@ -951,8 +1011,9 @@ class PngImageFile(ImageFile.ImageFile):
 
         return self.fp.read(read_bytes)
 
-    def load_end(self):
+    def load_end(self) -> None:
         """internal: finished reading image data"""
+        assert self.png is not None
         if self.__idat != 0:
             self.fp.read(self.__idat)
         while True:
@@ -978,7 +1039,13 @@ class PngImageFile(ImageFile.ImageFile):
             except EOFError:
                 if cid == b"fdAT":
                     length -= 4
-                ImageFile._safe_read(self.fp, length)
+                try:
+                    ImageFile._safe_read(self.fp, length)
+                except OSError as e:
+                    if ImageFile.LOAD_TRUNCATED_IMAGES:
+                        break
+                    else:
+                        raise e
             except AttributeError:
                 logger.debug("%r %s %s (unknown)", cid, pos, length)
                 s = ImageFile._safe_read(self.fp, length)
@@ -996,98 +1063,104 @@ class PngImageFile(ImageFile.ImageFile):
                         "RGBA", self.info["transparency"]
                     )
                 else:
+                    if self.im.mode == "P" and "transparency" in self.info:
+                        t = self.info["transparency"]
+                        if isinstance(t, bytes):
+                            updated.putpalettealphas(t)
+                        elif isinstance(t, int):
+                            updated.putpalettealpha(t)
                     mask = updated.convert("RGBA")
                 self._prev_im.paste(updated, self.dispose_extent, mask)
                 self.im = self._prev_im
-                if self.pyaccess:
-                    self.pyaccess = None
 
-    def _getexif(self):
+    def _getexif(self) -> dict[int, Any] | None:
         if "exif" not in self.info:
             self.load()
         if "exif" not in self.info and "Raw profile type exif" not in self.info:
             return None
         return self.getexif()._get_merged_dict()
 
-    def getexif(self):
+    def getexif(self) -> Image.Exif:
         if "exif" not in self.info:
             self.load()
 
         return super().getexif()
 
-    def getxmp(self):
-        """
-        Returns a dictionary containing the XMP tags.
-        Requires defusedxml to be installed.
-
-        :returns: XMP tags in a dictionary.
-        """
-        return (
-            self._getxmp(self.info["XML:com.adobe.xmp"])
-            if "XML:com.adobe.xmp" in self.info
-            else {}
-        )
-
 
 # --------------------------------------------------------------------
 # PNG writer
 
 _OUTMODES = {
-    # supported PIL modes, and corresponding rawmodes/bits/color combinations
-    "1": ("1", b"\x01\x00"),
-    "L;1": ("L;1", b"\x01\x00"),
-    "L;2": ("L;2", b"\x02\x00"),
-    "L;4": ("L;4", b"\x04\x00"),
-    "L": ("L", b"\x08\x00"),
-    "LA": ("LA", b"\x08\x04"),
-    "I": ("I;16B", b"\x10\x00"),
-    "I;16": ("I;16B", b"\x10\x00"),
-    "P;1": ("P;1", b"\x01\x03"),
-    "P;2": ("P;2", b"\x02\x03"),
-    "P;4": ("P;4", b"\x04\x03"),
-    "P": ("P", b"\x08\x03"),
-    "RGB": ("RGB", b"\x08\x02"),
-    "RGBA": ("RGBA", b"\x08\x06"),
+    # supported PIL modes, and corresponding rawmode, bit depth and color type
+    "1": ("1", b"\x01", b"\x00"),
+    "L;1": ("L;1", b"\x01", b"\x00"),
+    "L;2": ("L;2", b"\x02", b"\x00"),
+    "L;4": ("L;4", b"\x04", b"\x00"),
+    "L": ("L", b"\x08", b"\x00"),
+    "LA": ("LA", b"\x08", b"\x04"),
+    "I": ("I;16B", b"\x10", b"\x00"),
+    "I;16": ("I;16B", b"\x10", b"\x00"),
+    "I;16B": ("I;16B", b"\x10", b"\x00"),
+    "P;1": ("P;1", b"\x01", b"\x03"),
+    "P;2": ("P;2", b"\x02", b"\x03"),
+    "P;4": ("P;4", b"\x04", b"\x03"),
+    "P": ("P", b"\x08", b"\x03"),
+    "RGB": ("RGB", b"\x08", b"\x02"),
+    "RGBA": ("RGBA", b"\x08", b"\x06"),
 }
 
 
-def putchunk(fp, cid, *data):
+def putchunk(fp: IO[bytes], cid: bytes, *data: bytes) -> None:
     """Write a PNG chunk (including CRC field)"""
 
-    data = b"".join(data)
+    byte_data = b"".join(data)
 
-    fp.write(o32(len(data)) + cid)
-    fp.write(data)
-    crc = _crc32(data, _crc32(cid))
+    fp.write(o32(len(byte_data)) + cid)
+    fp.write(byte_data)
+    crc = _crc32(byte_data, _crc32(cid))
     fp.write(o32(crc))
 
 
 class _idat:
     # wrap output from the encoder in IDAT chunks
 
-    def __init__(self, fp, chunk):
+    def __init__(self, fp: IO[bytes], chunk: Callable[..., None]) -> None:
         self.fp = fp
         self.chunk = chunk
 
-    def write(self, data):
+    def write(self, data: bytes) -> None:
         self.chunk(self.fp, b"IDAT", data)
 
 
 class _fdat:
     # wrap encoder output in fdAT chunks
 
-    def __init__(self, fp, chunk, seq_num):
+    def __init__(self, fp: IO[bytes], chunk: Callable[..., None], seq_num: int) -> None:
         self.fp = fp
         self.chunk = chunk
         self.seq_num = seq_num
 
-    def write(self, data):
+    def write(self, data: bytes) -> None:
         self.chunk(self.fp, b"fdAT", o32(self.seq_num), data)
         self.seq_num += 1
 
 
-def _write_multiple_frames(im, fp, chunk, rawmode, default_image, append_images):
-    duration = im.encoderinfo.get("duration", im.info.get("duration", 0))
+class _Frame(NamedTuple):
+    im: Image.Image
+    bbox: tuple[int, int, int, int] | None
+    encoderinfo: dict[str, Any]
+
+
+def _write_multiple_frames(
+    im: Image.Image,
+    fp: IO[bytes],
+    chunk: Callable[..., None],
+    mode: str,
+    rawmode: str,
+    default_image: Image.Image | None,
+    append_images: list[Image.Image],
+) -> Image.Image | None:
+    duration = im.encoderinfo.get("duration")
     loop = im.encoderinfo.get("loop", im.info.get("loop", 0))
     disposal = im.encoderinfo.get("disposal", im.info.get("disposal", Disposal.OP_NONE))
     blend = im.encoderinfo.get("blend", im.info.get("blend", Blend.OP_SOURCE))
@@ -1097,20 +1170,19 @@ def _write_multiple_frames(im, fp, chunk, rawmode, default_image, append_images)
     else:
         chain = itertools.chain([im], append_images)
 
-    im_frames = []
+    im_frames: list[_Frame] = []
     frame_count = 0
     for im_seq in chain:
         for im_frame in ImageSequence.Iterator(im_seq):
-            if im_frame.mode == rawmode:
+            if im_frame.mode == mode:
                 im_frame = im_frame.copy()
             else:
-                if rawmode == "P":
-                    im_frame = im_frame.convert(rawmode, palette=im.palette)
-                else:
-                    im_frame = im_frame.convert(rawmode)
+                im_frame = im_frame.convert(mode)
             encoderinfo = im.encoderinfo.copy()
             if isinstance(duration, (list, tuple)):
                 encoderinfo["duration"] = duration[frame_count]
+            elif duration is None and "duration" in im_frame.info:
+                encoderinfo["duration"] = im_frame.info["duration"]
             if isinstance(disposal, (list, tuple)):
                 encoderinfo["disposal"] = disposal[frame_count]
             if isinstance(blend, (list, tuple)):
@@ -1119,42 +1191,42 @@ def _write_multiple_frames(im, fp, chunk, rawmode, default_image, append_images)
 
             if im_frames:
                 previous = im_frames[-1]
-                prev_disposal = previous["encoderinfo"].get("disposal")
-                prev_blend = previous["encoderinfo"].get("blend")
+                prev_disposal = previous.encoderinfo.get("disposal")
+                prev_blend = previous.encoderinfo.get("blend")
                 if prev_disposal == Disposal.OP_PREVIOUS and len(im_frames) < 2:
                     prev_disposal = Disposal.OP_BACKGROUND
 
                 if prev_disposal == Disposal.OP_BACKGROUND:
-                    base_im = previous["im"].copy()
+                    base_im = previous.im.copy()
                     dispose = Image.core.fill("RGBA", im.size, (0, 0, 0, 0))
-                    bbox = previous["bbox"]
+                    bbox = previous.bbox
                     if bbox:
                         dispose = dispose.crop(bbox)
                     else:
                         bbox = (0, 0) + im.size
                     base_im.paste(dispose, bbox)
                 elif prev_disposal == Disposal.OP_PREVIOUS:
-                    base_im = im_frames[-2]["im"]
+                    base_im = im_frames[-2].im
                 else:
-                    base_im = previous["im"]
+                    base_im = previous.im
                 delta = ImageChops.subtract_modulo(
-                    im_frame.convert("RGB"), base_im.convert("RGB")
+                    im_frame.convert("RGBA"), base_im.convert("RGBA")
                 )
-                bbox = delta.getbbox()
+                bbox = delta.getbbox(alpha_only=False)
                 if (
                     not bbox
                     and prev_disposal == encoderinfo.get("disposal")
                     and prev_blend == encoderinfo.get("blend")
+                    and "duration" in encoderinfo
                 ):
-                    previous["encoderinfo"]["duration"] += encoderinfo.get(
-                        "duration", duration
-                    )
+                    previous.encoderinfo["duration"] += encoderinfo["duration"]
                     continue
             else:
                 bbox = None
-            if "duration" not in encoderinfo:
-                encoderinfo["duration"] = duration
-            im_frames.append({"im": im_frame, "bbox": bbox, "encoderinfo": encoderinfo})
+            im_frames.append(_Frame(im_frame, bbox, encoderinfo))
+
+    if len(im_frames) == 1 and not default_image:
+        return im_frames[0].im
 
     # animation control
     chunk(
@@ -1166,19 +1238,25 @@ def _write_multiple_frames(im, fp, chunk, rawmode, default_image, append_images)
 
     # default image IDAT (if it exists)
     if default_image:
-        ImageFile._save(im, _idat(fp, chunk), [("zip", (0, 0) + im.size, 0, rawmode)])
+        if im.mode != mode:
+            im = im.convert(mode)
+        ImageFile._save(
+            im,
+            cast(IO[bytes], _idat(fp, chunk)),
+            [ImageFile._Tile("zip", (0, 0) + im.size, 0, rawmode)],
+        )
 
     seq_num = 0
     for frame, frame_data in enumerate(im_frames):
-        im_frame = frame_data["im"]
-        if not frame_data["bbox"]:
+        im_frame = frame_data.im
+        if not frame_data.bbox:
             bbox = (0, 0) + im_frame.size
         else:
-            bbox = frame_data["bbox"]
+            bbox = frame_data.bbox
             im_frame = im_frame.crop(bbox)
         size = im_frame.size
-        encoderinfo = frame_data["encoderinfo"]
-        frame_duration = int(round(encoderinfo["duration"]))
+        encoderinfo = frame_data.encoderinfo
+        frame_duration = int(round(encoderinfo.get("duration", 0)))
         frame_disposal = encoderinfo.get("disposal", disposal)
         frame_blend = encoderinfo.get("blend", blend)
         # frame control
@@ -1201,24 +1279,31 @@ def _write_multiple_frames(im, fp, chunk, rawmode, default_image, append_images)
             # first frame must be in IDAT chunks for backwards compatibility
             ImageFile._save(
                 im_frame,
-                _idat(fp, chunk),
-                [("zip", (0, 0) + im_frame.size, 0, rawmode)],
+                cast(IO[bytes], _idat(fp, chunk)),
+                [ImageFile._Tile("zip", (0, 0) + im_frame.size, 0, rawmode)],
             )
         else:
             fdat_chunks = _fdat(fp, chunk, seq_num)
             ImageFile._save(
                 im_frame,
-                fdat_chunks,
-                [("zip", (0, 0) + im_frame.size, 0, rawmode)],
+                cast(IO[bytes], fdat_chunks),
+                [ImageFile._Tile("zip", (0, 0) + im_frame.size, 0, rawmode)],
             )
             seq_num = fdat_chunks.seq_num
+    return None
 
 
-def _save_all(im, fp, filename):
+def _save_all(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     _save(im, fp, filename, save_all=True)
 
 
-def _save(im, fp, filename, chunk=putchunk, save_all=False):
+def _save(
+    im: Image.Image,
+    fp: IO[bytes],
+    filename: str | bytes,
+    chunk: Callable[..., None] = putchunk,
+    save_all: bool = False,
+) -> None:
     # save an image to disk (called by the save method)
 
     if save_all:
@@ -1226,22 +1311,23 @@ def _save(im, fp, filename, chunk=putchunk, save_all=False):
             "default_image", im.info.get("default_image")
         )
         modes = set()
+        sizes = set()
         append_images = im.encoderinfo.get("append_images", [])
-        if default_image:
-            chain = itertools.chain(append_images)
-        else:
-            chain = itertools.chain([im], append_images)
-        for im_seq in chain:
+        for im_seq in itertools.chain([im], append_images):
             for im_frame in ImageSequence.Iterator(im_seq):
                 modes.add(im_frame.mode)
+                sizes.add(im_frame.size)
         for mode in ("RGBA", "RGB", "P"):
             if mode in modes:
                 break
         else:
             mode = modes.pop()
+        size = tuple(max(frame_size[i] for frame_size in sizes) for i in range(2))
     else:
+        size = im.size
         mode = im.mode
 
+    outmode = mode
     if mode == "P":
         #
         # attempt to minimize storage requirements for palette images
@@ -1262,7 +1348,7 @@ def _save(im, fp, filename, chunk=putchunk, save_all=False):
                 bits = 2
             else:
                 bits = 4
-            mode = f"{mode};{bits}"
+            outmode += f";{bits}"
 
     # encoder options
     im.encoderconfig = (
@@ -1274,7 +1360,7 @@ def _save(im, fp, filename, chunk=putchunk, save_all=False):
 
     # get the corresponding PNG mode
     try:
-        rawmode, mode = _OUTMODES[mode]
+        rawmode, bit_depth, color_type = _OUTMODES[outmode]
     except KeyError as e:
         msg = f"cannot write mode {mode} as PNG"
         raise OSError(msg) from e
@@ -1287,9 +1373,10 @@ def _save(im, fp, filename, chunk=putchunk, save_all=False):
     chunk(
         fp,
         b"IHDR",
-        o32(im.size[0]),  # 0: size
-        o32(im.size[1]),
-        mode,  # 8: depth/type
+        o32(size[0]),  # 0: size
+        o32(size[1]),
+        bit_depth,
+        color_type,
         b"\0",  # 10: compression
         b"\0",  # 11: filter category
         b"\0",  # 12: interlace flag
@@ -1325,7 +1412,7 @@ def _save(im, fp, filename, chunk=putchunk, save_all=False):
                 chunk(fp, cid, data)
             elif cid[1:2].islower():
                 # Private chunk
-                after_idat = info_chunk[2:3]
+                after_idat = len(info_chunk) == 3 and info_chunk[2]
                 if not after_idat:
                     chunk(fp, cid, data)
 
@@ -1348,7 +1435,7 @@ def _save(im, fp, filename, chunk=putchunk, save_all=False):
                 transparency = max(0, min(255, transparency))
                 alpha = b"\xFF" * transparency + b"\0"
                 chunk(fp, b"tRNS", alpha[:alpha_bytes])
-        elif im.mode in ("1", "L", "I"):
+        elif im.mode in ("1", "L", "I", "I;16"):
             transparency = max(0, min(65535, transparency))
             chunk(fp, b"tRNS", o16(transparency))
         elif im.mode == "RGB":
@@ -1392,17 +1479,24 @@ def _save(im, fp, filename, chunk=putchunk, save_all=False):
             exif = exif[6:]
         chunk(fp, b"eXIf", exif)
 
+    single_im: Image.Image | None = im
     if save_all:
-        _write_multiple_frames(im, fp, chunk, rawmode, default_image, append_images)
-    else:
-        ImageFile._save(im, _idat(fp, chunk), [("zip", (0, 0) + im.size, 0, rawmode)])
+        single_im = _write_multiple_frames(
+            im, fp, chunk, mode, rawmode, default_image, append_images
+        )
+    if single_im:
+        ImageFile._save(
+            single_im,
+            cast(IO[bytes], _idat(fp, chunk)),
+            [ImageFile._Tile("zip", (0, 0) + single_im.size, 0, rawmode)],
+        )
 
     if info:
         for info_chunk in info.chunks:
             cid, data = info_chunk[:2]
             if cid[1:2].islower():
                 # Private chunk
-                after_idat = info_chunk[2:3]
+                after_idat = len(info_chunk) == 3 and info_chunk[2]
                 if after_idat:
                     chunk(fp, cid, data)
 
@@ -1416,32 +1510,26 @@ def _save(im, fp, filename, chunk=putchunk, save_all=False):
 # PNG chunk converter
 
 
-def getchunks(im, **params):
+def getchunks(im: Image.Image, **params: Any) -> list[tuple[bytes, bytes, bytes]]:
     """Return a list of PNG chunks representing this image."""
+    from io import BytesIO
 
-    class collector:
-        data = []
+    chunks = []
 
-        def write(self, data):
-            pass
+    def append(fp: IO[bytes], cid: bytes, *data: bytes) -> None:
+        byte_data = b"".join(data)
+        crc = o32(_crc32(byte_data, _crc32(cid)))
+        chunks.append((cid, byte_data, crc))
 
-        def append(self, chunk):
-            self.data.append(chunk)
-
-    def append(fp, cid, *data):
-        data = b"".join(data)
-        crc = o32(_crc32(data, _crc32(cid)))
-        fp.append((cid, data, crc))
-
-    fp = collector()
+    fp = BytesIO()
 
     try:
         im.encoderinfo = params
-        _save(im, fp, None, append)
+        _save(im, fp, "", append)
     finally:
         del im.encoderinfo
 
-    return fp.data
+    return chunks
 
 
 # --------------------------------------------------------------------
diff --git a/src/PIL/PpmImagePlugin.py b/src/PIL/PpmImagePlugin.py
index 2cb1e5636..4e779df17 100644
--- a/src/PIL/PpmImagePlugin.py
+++ b/src/PIL/PpmImagePlugin.py
@@ -13,7 +13,10 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
+import math
+from typing import IO
 
 from . import Image, ImageFile
 from ._binary import i16be as i16
@@ -35,6 +38,7 @@ MODES = {
     b"P6": "RGB",
     # extensions
     b"P0CMYK": "CMYK",
+    b"Pf": "F",
     # PIL extensions (for test purposes only)
     b"PyP": "P",
     b"PyRGBA": "RGBA",
@@ -42,8 +46,8 @@ MODES = {
 }
 
 
-def _accept(prefix):
-    return prefix[0:1] == b"P" and prefix[1] in b"0123456y"
+def _accept(prefix: bytes) -> bool:
+    return prefix[0:1] == b"P" and prefix[1] in b"0123456fy"
 
 
 ##
@@ -54,7 +58,9 @@ class PpmImageFile(ImageFile.ImageFile):
     format = "PPM"
     format_description = "Pbmplus image"
 
-    def _read_magic(self):
+    def _read_magic(self) -> bytes:
+        assert self.fp is not None
+
         magic = b""
         # read until whitespace or longest available magic number
         for _ in range(6):
@@ -64,7 +70,9 @@ class PpmImageFile(ImageFile.ImageFile):
             magic += c
         return magic
 
-    def _read_token(self):
+    def _read_token(self) -> bytes:
+        assert self.fp is not None
+
         token = b""
         while len(token) <= 10:  # read until next whitespace or limit of 10 characters
             c = self.fp.read(1)
@@ -90,13 +98,16 @@ class PpmImageFile(ImageFile.ImageFile):
             raise ValueError(msg)
         return token
 
-    def _open(self):
+    def _open(self) -> None:
+        assert self.fp is not None
+
         magic_number = self._read_magic()
         try:
             mode = MODES[magic_number]
         except KeyError:
             msg = "not a PPM file"
             raise SyntaxError(msg)
+        self._mode = mode
 
         if magic_number in (b"P1", b"P4"):
             self.custom_mimetype = "image/x-portable-bitmap"
@@ -105,40 +116,44 @@ class PpmImageFile(ImageFile.ImageFile):
         elif magic_number in (b"P3", b"P6"):
             self.custom_mimetype = "image/x-portable-pixmap"
 
-        maxval = None
+        self._size = int(self._read_token()), int(self._read_token())
+
         decoder_name = "raw"
         if magic_number in (b"P1", b"P2", b"P3"):
             decoder_name = "ppm_plain"
-        for ix in range(3):
-            token = int(self._read_token())
-            if ix == 0:  # token is the x size
-                xsize = token
-            elif ix == 1:  # token is the y size
-                ysize = token
-                if mode == "1":
-                    self.mode = "1"
-                    rawmode = "1;I"
-                    break
-                else:
-                    self.mode = rawmode = mode
-            elif ix == 2:  # token is maxval
-                maxval = token
-                if not 0 < maxval < 65536:
-                    msg = "maxval must be greater than 0 and less than 65536"
-                    raise ValueError(msg)
-                if maxval > 255 and mode == "L":
-                    self.mode = "I"
 
-                if decoder_name != "ppm_plain":
-                    # If maxval matches a bit depth, use the raw decoder directly
-                    if maxval == 65535 and mode == "L":
-                        rawmode = "I;16B"
-                    elif maxval != 255:
-                        decoder_name = "ppm"
+        args: str | tuple[str | int, ...]
+        if mode == "1":
+            args = "1;I"
+        elif mode == "F":
+            scale = float(self._read_token())
+            if scale == 0.0 or not math.isfinite(scale):
+                msg = "scale must be finite and non-zero"
+                raise ValueError(msg)
+            self.info["scale"] = abs(scale)
 
-        args = (rawmode, 0, 1) if decoder_name == "raw" else (rawmode, maxval)
-        self._size = xsize, ysize
-        self.tile = [(decoder_name, (0, 0, xsize, ysize), self.fp.tell(), args)]
+            rawmode = "F;32F" if scale < 0 else "F;32BF"
+            args = (rawmode, 0, -1)
+        else:
+            maxval = int(self._read_token())
+            if not 0 < maxval < 65536:
+                msg = "maxval must be greater than 0 and less than 65536"
+                raise ValueError(msg)
+            if maxval > 255 and mode == "L":
+                self._mode = "I"
+
+            rawmode = mode
+            if decoder_name != "ppm_plain":
+                # If maxval matches a bit depth, use the raw decoder directly
+                if maxval == 65535 and mode == "L":
+                    rawmode = "I;16B"
+                elif maxval != 255:
+                    decoder_name = "ppm"
+
+            args = rawmode if decoder_name == "raw" else (rawmode, maxval)
+        self.tile = [
+            ImageFile._Tile(decoder_name, (0, 0) + self.size, self.fp.tell(), args)
+        ]
 
 
 #
@@ -147,16 +162,19 @@ class PpmImageFile(ImageFile.ImageFile):
 
 class PpmPlainDecoder(ImageFile.PyDecoder):
     _pulls_fd = True
+    _comment_spans: bool
+
+    def _read_block(self) -> bytes:
+        assert self.fd is not None
 
-    def _read_block(self):
         return self.fd.read(ImageFile.SAFEBLOCK)
 
-    def _find_comment_end(self, block, start=0):
+    def _find_comment_end(self, block: bytes, start: int = 0) -> int:
         a = block.find(b"\n", start)
         b = block.find(b"\r", start)
         return min(a, b) if a * b > 0 else max(a, b)  # lowest nonnegative index (or -1)
 
-    def _ignore_comments(self, block):
+    def _ignore_comments(self, block: bytes) -> bytes:
         if self._comment_spans:
             # Finish current comment
             while block:
@@ -190,7 +208,7 @@ class PpmPlainDecoder(ImageFile.PyDecoder):
                 break
         return block
 
-    def _decode_bitonal(self):
+    def _decode_bitonal(self) -> bytearray:
         """
         This is a separate method because in the plain PBM format, all data tokens are
         exactly one byte, so the inter-token whitespace is optional.
@@ -215,7 +233,7 @@ class PpmPlainDecoder(ImageFile.PyDecoder):
         invert = bytes.maketrans(b"01", b"\xFF\x00")
         return data.translate(invert)
 
-    def _decode_blocks(self, maxval):
+    def _decode_blocks(self, maxval: int) -> bytearray:
         data = bytearray()
         max_len = 10
         out_byte_count = 4 if self.mode == "I" else 1
@@ -223,7 +241,7 @@ class PpmPlainDecoder(ImageFile.PyDecoder):
         bands = Image.getmodebands(self.mode)
         total_bytes = self.state.xsize * self.state.ysize * bands * out_byte_count
 
-        half_token = False
+        half_token = b""
         while len(data) != total_bytes:
             block = self._read_block()  # read next block
             if not block:
@@ -237,7 +255,7 @@ class PpmPlainDecoder(ImageFile.PyDecoder):
 
             if half_token:
                 block = half_token + block  # stitch half_token to new block
-                half_token = False
+                half_token = b""
 
             tokens = block.split()
 
@@ -254,16 +272,19 @@ class PpmPlainDecoder(ImageFile.PyDecoder):
                     msg = b"Token too long found in data: %s" % token[: max_len + 1]
                     raise ValueError(msg)
                 value = int(token)
+                if value < 0:
+                    msg_str = f"Channel value is negative: {value}"
+                    raise ValueError(msg_str)
                 if value > maxval:
-                    msg = f"Channel value too large for this mode: {value}"
-                    raise ValueError(msg)
+                    msg_str = f"Channel value too large for this mode: {value}"
+                    raise ValueError(msg_str)
                 value = round(value / maxval * out_max)
                 data += o32(value) if self.mode == "I" else o8(value)
                 if len(data) == total_bytes:  # finished!
                     break
         return data
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
         self._comment_spans = False
         if self.mode == "1":
             data = self._decode_bitonal()
@@ -279,14 +300,17 @@ class PpmPlainDecoder(ImageFile.PyDecoder):
 class PpmDecoder(ImageFile.PyDecoder):
     _pulls_fd = True
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
+        assert self.fd is not None
+
         data = bytearray()
         maxval = self.args[-1]
         in_byte_count = 1 if maxval < 256 else 2
         out_byte_count = 4 if self.mode == "I" else 1
         out_max = 65535 if self.mode == "I" else 255
         bands = Image.getmodebands(self.mode)
-        while len(data) < self.state.xsize * self.state.ysize * bands * out_byte_count:
+        dest_length = self.state.xsize * self.state.ysize * bands * out_byte_count
+        while len(data) < dest_length:
             pixels = self.fd.read(in_byte_count * bands)
             if len(pixels) < in_byte_count * bands:
                 # eof
@@ -306,15 +330,17 @@ class PpmDecoder(ImageFile.PyDecoder):
 # --------------------------------------------------------------------
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if im.mode == "1":
         rawmode, head = "1;I", b"P4"
     elif im.mode == "L":
         rawmode, head = "L", b"P5"
-    elif im.mode == "I":
+    elif im.mode in ("I", "I;16"):
         rawmode, head = "I;16B", b"P5"
     elif im.mode in ("RGB", "RGBA"):
         rawmode, head = "RGB", b"P6"
+    elif im.mode == "F":
+        rawmode, head = "F;32F", b"Pf"
     else:
         msg = f"cannot write mode {im.mode} as PPM"
         raise OSError(msg)
@@ -326,10 +352,12 @@ def _save(im, fp, filename):
             fp.write(b"255\n")
         else:
             fp.write(b"65535\n")
-    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, 1))])
-
-    # ALTERNATIVE: save via builtin debug function
-    # im._dump(filename)
+    elif head == b"Pf":
+        fp.write(b"-1.0\n")
+    row_order = -1 if im.mode == "F" else 1
+    ImageFile._save(
+        im, fp, [ImageFile._Tile("raw", (0, 0) + im.size, 0, (rawmode, 0, row_order))]
+    )
 
 
 #
@@ -342,6 +370,6 @@ Image.register_save(PpmImageFile.format, _save)
 Image.register_decoder("ppm", PpmDecoder)
 Image.register_decoder("ppm_plain", PpmPlainDecoder)
 
-Image.register_extensions(PpmImageFile.format, [".pbm", ".pgm", ".ppm", ".pnm"])
+Image.register_extensions(PpmImageFile.format, [".pbm", ".pgm", ".ppm", ".pnm", ".pfm"])
 
 Image.register_mime(PpmImageFile.format, "image/x-portable-anymap")
diff --git a/src/PIL/PsdImagePlugin.py b/src/PIL/PsdImagePlugin.py
index 5a5d60d56..8ff5e3908 100644
--- a/src/PIL/PsdImagePlugin.py
+++ b/src/PIL/PsdImagePlugin.py
@@ -15,14 +15,18 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import io
+from functools import cached_property
+from typing import IO
 
 from . import Image, ImageFile, ImagePalette
 from ._binary import i8
 from ._binary import i16be as i16
 from ._binary import i32be as i32
 from ._binary import si16be as si16
+from ._binary import si32be as si32
 
 MODES = {
     # (photoshop mode, bits) -> (pil mode, required channels)
@@ -42,7 +46,7 @@ MODES = {
 # read PSD images
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] == b"8BPS"
 
 
@@ -55,7 +59,7 @@ class PsdImageFile(ImageFile.ImageFile):
     format_description = "Adobe Photoshop"
     _close_exclusive_fp_after_loading = False
 
-    def _open(self):
+    def _open(self) -> None:
         read = self.fp.read
 
         #
@@ -79,7 +83,7 @@ class PsdImageFile(ImageFile.ImageFile):
             mode = "RGBA"
             channels = 4
 
-        self.mode = mode
+        self._mode = mode
         self._size = i32(s, 18), i32(s, 14)
 
         #
@@ -116,18 +120,17 @@ class PsdImageFile(ImageFile.ImageFile):
         #
         # layer and mask information
 
-        self.layers = []
+        self._layers_position = None
 
         size = i32(read(4))
         if size:
             end = self.fp.tell() + size
             size = i32(read(4))
             if size:
-                _layer_data = io.BytesIO(ImageFile._safe_read(self.fp, size))
-                self.layers = _layerinfo(_layer_data, size)
+                self._layers_position = self.fp.tell()
+                self._layers_size = size
             self.fp.seek(end)
-        self.n_frames = len(self.layers)
-        self.is_animated = self.n_frames > 1
+        self._n_frames: int | None = None
 
         #
         # image descriptor
@@ -139,32 +142,55 @@ class PsdImageFile(ImageFile.ImageFile):
         self.frame = 1
         self._min_frame = 1
 
-    def seek(self, layer):
+    @cached_property
+    def layers(
+        self,
+    ) -> list[tuple[str, str, tuple[int, int, int, int], list[ImageFile._Tile]]]:
+        layers = []
+        if self._layers_position is not None:
+            self._fp.seek(self._layers_position)
+            _layer_data = io.BytesIO(ImageFile._safe_read(self._fp, self._layers_size))
+            layers = _layerinfo(_layer_data, self._layers_size)
+        self._n_frames = len(layers)
+        return layers
+
+    @property
+    def n_frames(self) -> int:
+        if self._n_frames is None:
+            self._n_frames = len(self.layers)
+        return self._n_frames
+
+    @property
+    def is_animated(self) -> bool:
+        return len(self.layers) > 1
+
+    def seek(self, layer: int) -> None:
         if not self._seek_check(layer):
             return
 
         # seek to given layer (1..max)
         try:
-            name, mode, bbox, tile = self.layers[layer - 1]
-            self.mode = mode
+            _, mode, _, tile = self.layers[layer - 1]
+            self._mode = mode
             self.tile = tile
             self.frame = layer
             self.fp = self._fp
-            return name, bbox
         except IndexError as e:
             msg = "no such layer"
             raise EOFError(msg) from e
 
-    def tell(self):
+    def tell(self) -> int:
         # return layer number (0=image, 1..max=layers)
         return self.frame
 
 
-def _layerinfo(fp, ct_bytes):
+def _layerinfo(
+    fp: IO[bytes], ct_bytes: int
+) -> list[tuple[str, str, tuple[int, int, int, int], list[ImageFile._Tile]]]:
     # read layerinfo block
     layers = []
 
-    def read(size):
+    def read(size: int) -> bytes:
         return ImageFile._safe_read(fp, size)
 
     ct = si16(read(2))
@@ -176,39 +202,41 @@ def _layerinfo(fp, ct_bytes):
 
     for _ in range(abs(ct)):
         # bounding box
-        y0 = i32(read(4))
-        x0 = i32(read(4))
-        y1 = i32(read(4))
-        x1 = i32(read(4))
+        y0 = si32(read(4))
+        x0 = si32(read(4))
+        y1 = si32(read(4))
+        x1 = si32(read(4))
 
         # image info
-        mode = []
+        bands = []
         ct_types = i16(read(2))
-        types = list(range(ct_types))
-        if len(types) > 4:
+        if ct_types > 4:
+            fp.seek(ct_types * 6 + 12, io.SEEK_CUR)
+            size = i32(read(4))
+            fp.seek(size, io.SEEK_CUR)
             continue
 
-        for _ in types:
+        for _ in range(ct_types):
             type = i16(read(2))
 
             if type == 65535:
-                m = "A"
+                b = "A"
             else:
-                m = "RGBA"[type]
+                b = "RGBA"[type]
 
-            mode.append(m)
+            bands.append(b)
             read(4)  # size
 
         # figure out the image mode
-        mode.sort()
-        if mode == ["R"]:
+        bands.sort()
+        if bands == ["R"]:
             mode = "L"
-        elif mode == ["B", "G", "R"]:
+        elif bands == ["B", "G", "R"]:
             mode = "RGB"
-        elif mode == ["A", "B", "G", "R"]:
+        elif bands == ["A", "B", "G", "R"]:
             mode = "RGBA"
         else:
-            mode = None  # unknown
+            mode = ""  # unknown
 
         # skip over blend flags and extra information
         read(12)  # filler
@@ -235,19 +263,22 @@ def _layerinfo(fp, ct_bytes):
         layers.append((name, mode, (x0, y0, x1, y1)))
 
     # get tiles
+    layerinfo = []
     for i, (name, mode, bbox) in enumerate(layers):
         tile = []
         for m in mode:
             t = _maketile(fp, m, bbox, 1)
             if t:
                 tile.extend(t)
-        layers[i] = name, mode, bbox, tile
+        layerinfo.append((name, mode, bbox, tile))
 
-    return layers
+    return layerinfo
 
 
-def _maketile(file, mode, bbox, channels):
-    tile = None
+def _maketile(
+    file: IO[bytes], mode: str, bbox: tuple[int, int, int, int], channels: int
+) -> list[ImageFile._Tile]:
+    tiles = []
     read = file.read
 
     compression = i16(read(2))
@@ -260,26 +291,24 @@ def _maketile(file, mode, bbox, channels):
     if compression == 0:
         #
         # raw compression
-        tile = []
         for channel in range(channels):
             layer = mode[channel]
             if mode == "CMYK":
                 layer += ";I"
-            tile.append(("raw", bbox, offset, layer))
+            tiles.append(ImageFile._Tile("raw", bbox, offset, layer))
             offset = offset + xsize * ysize
 
     elif compression == 1:
         #
         # packbits compression
         i = 0
-        tile = []
         bytecount = read(channels * ysize * 2)
         offset = file.tell()
         for channel in range(channels):
             layer = mode[channel]
             if mode == "CMYK":
                 layer += ";I"
-            tile.append(("packbits", bbox, offset, layer))
+            tiles.append(ImageFile._Tile("packbits", bbox, offset, layer))
             for y in range(ysize):
                 offset = offset + i16(bytecount, i)
                 i += 2
@@ -289,7 +318,7 @@ def _maketile(file, mode, bbox, channels):
     if offset & 1:
         read(1)  # padding
 
-    return tile
+    return tiles
 
 
 # --------------------------------------------------------------------
diff --git a/src/PIL/PyAccess.py b/src/PIL/PyAccess.py
deleted file mode 100644
index 39747b4f3..000000000
--- a/src/PIL/PyAccess.py
+++ /dev/null
@@ -1,360 +0,0 @@
-#
-# The Python Imaging Library
-# Pillow fork
-#
-# Python implementation of the PixelAccess Object
-#
-# Copyright (c) 1997-2009 by Secret Labs AB.  All rights reserved.
-# Copyright (c) 1995-2009 by Fredrik Lundh.
-# Copyright (c) 2013 Eric Soroos
-#
-# See the README file for information on usage and redistribution
-#
-
-# Notes:
-#
-#  * Implements the pixel access object following Access.c
-#  * Taking only the tuple form, which is used from python.
-#    * Fill.c uses the integer form, but it's still going to use the old
-#      Access.c implementation.
-#
-
-import logging
-import sys
-
-try:
-    from cffi import FFI
-
-    defs = """
-    struct Pixel_RGBA {
-        unsigned char r,g,b,a;
-    };
-    struct Pixel_I16 {
-        unsigned char l,r;
-    };
-    """
-    ffi = FFI()
-    ffi.cdef(defs)
-except ImportError as ex:
-    # Allow error import for doc purposes, but error out when accessing
-    # anything in core.
-    from ._util import DeferredError
-
-    FFI = ffi = DeferredError(ex)
-
-logger = logging.getLogger(__name__)
-
-
-class PyAccess:
-    def __init__(self, img, readonly=False):
-        vals = dict(img.im.unsafe_ptrs)
-        self.readonly = readonly
-        self.image8 = ffi.cast("unsigned char **", vals["image8"])
-        self.image32 = ffi.cast("int **", vals["image32"])
-        self.image = ffi.cast("unsigned char **", vals["image"])
-        self.xsize, self.ysize = img.im.size
-        self._img = img
-
-        # Keep pointer to im object to prevent dereferencing.
-        self._im = img.im
-        if self._im.mode in ("P", "PA"):
-            self._palette = img.palette
-
-        # Debugging is polluting test traces, only useful here
-        # when hacking on PyAccess
-        # logger.debug("%s", vals)
-        self._post_init()
-
-    def _post_init(self):
-        pass
-
-    def __setitem__(self, xy, color):
-        """
-        Modifies the pixel at x,y. The color is given as a single
-        numerical value for single band images, and a tuple for
-        multi-band images
-
-        :param xy: The pixel coordinate, given as (x, y). See
-           :ref:`coordinate-system`.
-        :param color: The pixel value.
-        """
-        if self.readonly:
-            msg = "Attempt to putpixel a read only image"
-            raise ValueError(msg)
-        (x, y) = xy
-        if x < 0:
-            x = self.xsize + x
-        if y < 0:
-            y = self.ysize + y
-        (x, y) = self.check_xy((x, y))
-
-        if (
-            self._im.mode in ("P", "PA")
-            and isinstance(color, (list, tuple))
-            and len(color) in [3, 4]
-        ):
-            # RGB or RGBA value for a P or PA image
-            if self._im.mode == "PA":
-                alpha = color[3] if len(color) == 4 else 255
-                color = color[:3]
-            color = self._palette.getcolor(color, self._img)
-            if self._im.mode == "PA":
-                color = (color, alpha)
-
-        return self.set_pixel(x, y, color)
-
-    def __getitem__(self, xy):
-        """
-        Returns the pixel at x,y. The pixel is returned as a single
-        value for single band images or a tuple for multiple band
-        images
-
-        :param xy: The pixel coordinate, given as (x, y). See
-          :ref:`coordinate-system`.
-        :returns: a pixel value for single band images, a tuple of
-          pixel values for multiband images.
-        """
-        (x, y) = xy
-        if x < 0:
-            x = self.xsize + x
-        if y < 0:
-            y = self.ysize + y
-        (x, y) = self.check_xy((x, y))
-        return self.get_pixel(x, y)
-
-    putpixel = __setitem__
-    getpixel = __getitem__
-
-    def check_xy(self, xy):
-        (x, y) = xy
-        if not (0 <= x < self.xsize and 0 <= y < self.ysize):
-            msg = "pixel location out of range"
-            raise ValueError(msg)
-        return xy
-
-
-class _PyAccess32_2(PyAccess):
-    """PA, LA, stored in first and last bytes of a 32 bit word"""
-
-    def _post_init(self, *args, **kwargs):
-        self.pixels = ffi.cast("struct Pixel_RGBA **", self.image32)
-
-    def get_pixel(self, x, y):
-        pixel = self.pixels[y][x]
-        return pixel.r, pixel.a
-
-    def set_pixel(self, x, y, color):
-        pixel = self.pixels[y][x]
-        # tuple
-        pixel.r = min(color[0], 255)
-        pixel.a = min(color[1], 255)
-
-
-class _PyAccess32_3(PyAccess):
-    """RGB and friends, stored in the first three bytes of a 32 bit word"""
-
-    def _post_init(self, *args, **kwargs):
-        self.pixels = ffi.cast("struct Pixel_RGBA **", self.image32)
-
-    def get_pixel(self, x, y):
-        pixel = self.pixels[y][x]
-        return pixel.r, pixel.g, pixel.b
-
-    def set_pixel(self, x, y, color):
-        pixel = self.pixels[y][x]
-        # tuple
-        pixel.r = min(color[0], 255)
-        pixel.g = min(color[1], 255)
-        pixel.b = min(color[2], 255)
-        pixel.a = 255
-
-
-class _PyAccess32_4(PyAccess):
-    """RGBA etc, all 4 bytes of a 32 bit word"""
-
-    def _post_init(self, *args, **kwargs):
-        self.pixels = ffi.cast("struct Pixel_RGBA **", self.image32)
-
-    def get_pixel(self, x, y):
-        pixel = self.pixels[y][x]
-        return pixel.r, pixel.g, pixel.b, pixel.a
-
-    def set_pixel(self, x, y, color):
-        pixel = self.pixels[y][x]
-        # tuple
-        pixel.r = min(color[0], 255)
-        pixel.g = min(color[1], 255)
-        pixel.b = min(color[2], 255)
-        pixel.a = min(color[3], 255)
-
-
-class _PyAccess8(PyAccess):
-    """1, L, P, 8 bit images stored as uint8"""
-
-    def _post_init(self, *args, **kwargs):
-        self.pixels = self.image8
-
-    def get_pixel(self, x, y):
-        return self.pixels[y][x]
-
-    def set_pixel(self, x, y, color):
-        try:
-            # integer
-            self.pixels[y][x] = min(color, 255)
-        except TypeError:
-            # tuple
-            self.pixels[y][x] = min(color[0], 255)
-
-
-class _PyAccessI16_N(PyAccess):
-    """I;16 access, native bitendian without conversion"""
-
-    def _post_init(self, *args, **kwargs):
-        self.pixels = ffi.cast("unsigned short **", self.image)
-
-    def get_pixel(self, x, y):
-        return self.pixels[y][x]
-
-    def set_pixel(self, x, y, color):
-        try:
-            # integer
-            self.pixels[y][x] = min(color, 65535)
-        except TypeError:
-            # tuple
-            self.pixels[y][x] = min(color[0], 65535)
-
-
-class _PyAccessI16_L(PyAccess):
-    """I;16L access, with conversion"""
-
-    def _post_init(self, *args, **kwargs):
-        self.pixels = ffi.cast("struct Pixel_I16 **", self.image)
-
-    def get_pixel(self, x, y):
-        pixel = self.pixels[y][x]
-        return pixel.l + pixel.r * 256
-
-    def set_pixel(self, x, y, color):
-        pixel = self.pixels[y][x]
-        try:
-            color = min(color, 65535)
-        except TypeError:
-            color = min(color[0], 65535)
-
-        pixel.l = color & 0xFF  # noqa: E741
-        pixel.r = color >> 8
-
-
-class _PyAccessI16_B(PyAccess):
-    """I;16B access, with conversion"""
-
-    def _post_init(self, *args, **kwargs):
-        self.pixels = ffi.cast("struct Pixel_I16 **", self.image)
-
-    def get_pixel(self, x, y):
-        pixel = self.pixels[y][x]
-        return pixel.l * 256 + pixel.r
-
-    def set_pixel(self, x, y, color):
-        pixel = self.pixels[y][x]
-        try:
-            color = min(color, 65535)
-        except Exception:
-            color = min(color[0], 65535)
-
-        pixel.l = color >> 8  # noqa: E741
-        pixel.r = color & 0xFF
-
-
-class _PyAccessI32_N(PyAccess):
-    """Signed Int32 access, native endian"""
-
-    def _post_init(self, *args, **kwargs):
-        self.pixels = self.image32
-
-    def get_pixel(self, x, y):
-        return self.pixels[y][x]
-
-    def set_pixel(self, x, y, color):
-        self.pixels[y][x] = color
-
-
-class _PyAccessI32_Swap(PyAccess):
-    """I;32L/B access, with byteswapping conversion"""
-
-    def _post_init(self, *args, **kwargs):
-        self.pixels = self.image32
-
-    def reverse(self, i):
-        orig = ffi.new("int *", i)
-        chars = ffi.cast("unsigned char *", orig)
-        chars[0], chars[1], chars[2], chars[3] = chars[3], chars[2], chars[1], chars[0]
-        return ffi.cast("int *", chars)[0]
-
-    def get_pixel(self, x, y):
-        return self.reverse(self.pixels[y][x])
-
-    def set_pixel(self, x, y, color):
-        self.pixels[y][x] = self.reverse(color)
-
-
-class _PyAccessF(PyAccess):
-    """32 bit float access"""
-
-    def _post_init(self, *args, **kwargs):
-        self.pixels = ffi.cast("float **", self.image32)
-
-    def get_pixel(self, x, y):
-        return self.pixels[y][x]
-
-    def set_pixel(self, x, y, color):
-        try:
-            # not a tuple
-            self.pixels[y][x] = color
-        except TypeError:
-            # tuple
-            self.pixels[y][x] = color[0]
-
-
-mode_map = {
-    "1": _PyAccess8,
-    "L": _PyAccess8,
-    "P": _PyAccess8,
-    "I;16N": _PyAccessI16_N,
-    "LA": _PyAccess32_2,
-    "La": _PyAccess32_2,
-    "PA": _PyAccess32_2,
-    "RGB": _PyAccess32_3,
-    "LAB": _PyAccess32_3,
-    "HSV": _PyAccess32_3,
-    "YCbCr": _PyAccess32_3,
-    "RGBA": _PyAccess32_4,
-    "RGBa": _PyAccess32_4,
-    "RGBX": _PyAccess32_4,
-    "CMYK": _PyAccess32_4,
-    "F": _PyAccessF,
-    "I": _PyAccessI32_N,
-}
-
-if sys.byteorder == "little":
-    mode_map["I;16"] = _PyAccessI16_N
-    mode_map["I;16L"] = _PyAccessI16_N
-    mode_map["I;16B"] = _PyAccessI16_B
-
-    mode_map["I;32L"] = _PyAccessI32_N
-    mode_map["I;32B"] = _PyAccessI32_Swap
-else:
-    mode_map["I;16"] = _PyAccessI16_L
-    mode_map["I;16L"] = _PyAccessI16_L
-    mode_map["I;16B"] = _PyAccessI16_N
-
-    mode_map["I;32L"] = _PyAccessI32_Swap
-    mode_map["I;32B"] = _PyAccessI32_N
-
-
-def new(img, readonly=False):
-    access_type = mode_map.get(img.mode, None)
-    if not access_type:
-        logger.debug("PyAccess Not Implemented: %s", img.mode)
-        return None
-    return access_type(img, readonly)
diff --git a/src/PIL/QoiImagePlugin.py b/src/PIL/QoiImagePlugin.py
index ef91b90ab..010d3f941 100644
--- a/src/PIL/QoiImagePlugin.py
+++ b/src/PIL/QoiImagePlugin.py
@@ -5,15 +5,15 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import os
 
 from . import Image, ImageFile
 from ._binary import i32be as i32
-from ._binary import o8
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] == b"qoif"
 
 
@@ -21,82 +21,92 @@ class QoiImageFile(ImageFile.ImageFile):
     format = "QOI"
     format_description = "Quite OK Image"
 
-    def _open(self):
+    def _open(self) -> None:
         if not _accept(self.fp.read(4)):
             msg = "not a QOI file"
             raise SyntaxError(msg)
 
-        self._size = tuple(i32(self.fp.read(4)) for i in range(2))
+        self._size = i32(self.fp.read(4)), i32(self.fp.read(4))
 
         channels = self.fp.read(1)[0]
-        self.mode = "RGB" if channels == 3 else "RGBA"
+        self._mode = "RGB" if channels == 3 else "RGBA"
 
         self.fp.seek(1, os.SEEK_CUR)  # colorspace
-        self.tile = [("qoi", (0, 0) + self._size, self.fp.tell(), None)]
+        self.tile = [ImageFile._Tile("qoi", (0, 0) + self._size, self.fp.tell(), None)]
 
 
 class QoiDecoder(ImageFile.PyDecoder):
     _pulls_fd = True
+    _previous_pixel: bytes | bytearray | None = None
+    _previously_seen_pixels: dict[int, bytes | bytearray] = {}
 
-    def _add_to_previous_pixels(self, value):
+    def _add_to_previous_pixels(self, value: bytes | bytearray) -> None:
         self._previous_pixel = value
 
         r, g, b, a = value
         hash_value = (r * 3 + g * 5 + b * 7 + a * 11) % 64
         self._previously_seen_pixels[hash_value] = value
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
+        assert self.fd is not None
+
         self._previously_seen_pixels = {}
-        self._previous_pixel = None
-        self._add_to_previous_pixels(b"".join(o8(i) for i in (0, 0, 0, 255)))
+        self._add_to_previous_pixels(bytearray((0, 0, 0, 255)))
 
         data = bytearray()
         bands = Image.getmodebands(self.mode)
-        while len(data) < self.state.xsize * self.state.ysize * bands:
+        dest_length = self.state.xsize * self.state.ysize * bands
+        while len(data) < dest_length:
             byte = self.fd.read(1)[0]
-            if byte == 0b11111110:  # QOI_OP_RGB
-                value = self.fd.read(3) + o8(255)
+            value: bytes | bytearray
+            if byte == 0b11111110 and self._previous_pixel:  # QOI_OP_RGB
+                value = bytearray(self.fd.read(3)) + self._previous_pixel[3:]
             elif byte == 0b11111111:  # QOI_OP_RGBA
                 value = self.fd.read(4)
             else:
                 op = byte >> 6
                 if op == 0:  # QOI_OP_INDEX
                     op_index = byte & 0b00111111
-                    value = self._previously_seen_pixels.get(op_index, (0, 0, 0, 0))
-                elif op == 1:  # QOI_OP_DIFF
-                    value = (
-                        (self._previous_pixel[0] + ((byte & 0b00110000) >> 4) - 2)
-                        % 256,
-                        (self._previous_pixel[1] + ((byte & 0b00001100) >> 2) - 2)
-                        % 256,
-                        (self._previous_pixel[2] + (byte & 0b00000011) - 2) % 256,
+                    value = self._previously_seen_pixels.get(
+                        op_index, bytearray((0, 0, 0, 0))
                     )
-                    value += (self._previous_pixel[3],)
-                elif op == 2:  # QOI_OP_LUMA
+                elif op == 1 and self._previous_pixel:  # QOI_OP_DIFF
+                    value = bytearray(
+                        (
+                            (self._previous_pixel[0] + ((byte & 0b00110000) >> 4) - 2)
+                            % 256,
+                            (self._previous_pixel[1] + ((byte & 0b00001100) >> 2) - 2)
+                            % 256,
+                            (self._previous_pixel[2] + (byte & 0b00000011) - 2) % 256,
+                            self._previous_pixel[3],
+                        )
+                    )
+                elif op == 2 and self._previous_pixel:  # QOI_OP_LUMA
                     second_byte = self.fd.read(1)[0]
                     diff_green = (byte & 0b00111111) - 32
                     diff_red = ((second_byte & 0b11110000) >> 4) - 8
                     diff_blue = (second_byte & 0b00001111) - 8
 
-                    value = tuple(
-                        (self._previous_pixel[i] + diff_green + diff) % 256
-                        for i, diff in enumerate((diff_red, 0, diff_blue))
+                    value = bytearray(
+                        tuple(
+                            (self._previous_pixel[i] + diff_green + diff) % 256
+                            for i, diff in enumerate((diff_red, 0, diff_blue))
+                        )
                     )
-                    value += (self._previous_pixel[3],)
-                elif op == 3:  # QOI_OP_RUN
+                    value += self._previous_pixel[3:]
+                elif op == 3 and self._previous_pixel:  # QOI_OP_RUN
                     run_length = (byte & 0b00111111) + 1
                     value = self._previous_pixel
                     if bands == 3:
                         value = value[:3]
                     data += value * run_length
                     continue
-                value = b"".join(o8(i) for i in value)
             self._add_to_previous_pixels(value)
 
             if bands == 3:
                 value = value[:3]
             data += value
-        self.set_as_raw(bytes(data))
+        self.set_as_raw(data)
         return -1, 0
 
 
diff --git a/src/PIL/SgiImagePlugin.py b/src/PIL/SgiImagePlugin.py
index 3662ffd15..44254b7a4 100644
--- a/src/PIL/SgiImagePlugin.py
+++ b/src/PIL/SgiImagePlugin.py
@@ -20,17 +20,18 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 import os
 import struct
+from typing import IO
 
 from . import Image, ImageFile
 from ._binary import i16be as i16
 from ._binary import o8
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return len(prefix) >= 2 and i16(prefix) == 474
 
 
@@ -52,8 +53,10 @@ class SgiImageFile(ImageFile.ImageFile):
     format = "SGI"
     format_description = "SGI Image File Format"
 
-    def _open(self):
+    def _open(self) -> None:
         # HEAD
+        assert self.fp is not None
+
         headlen = 512
         s = self.fp.read(headlen)
 
@@ -94,7 +97,7 @@ class SgiImageFile(ImageFile.ImageFile):
             raise ValueError(msg)
 
         self._size = xsize, ysize
-        self.mode = rawmode.split(";")[0]
+        self._mode = rawmode.split(";")[0]
         if self.mode == "RGB":
             self.custom_mimetype = "image/rgb"
 
@@ -106,24 +109,33 @@ class SgiImageFile(ImageFile.ImageFile):
             pagesize = xsize * ysize * bpc
             if bpc == 2:
                 self.tile = [
-                    ("SGI16", (0, 0) + self.size, headlen, (self.mode, 0, orientation))
+                    ImageFile._Tile(
+                        "SGI16",
+                        (0, 0) + self.size,
+                        headlen,
+                        (self.mode, 0, orientation),
+                    )
                 ]
             else:
                 self.tile = []
                 offset = headlen
                 for layer in self.mode:
                     self.tile.append(
-                        ("raw", (0, 0) + self.size, offset, (layer, 0, orientation))
+                        ImageFile._Tile(
+                            "raw", (0, 0) + self.size, offset, (layer, 0, orientation)
+                        )
                     )
                     offset += pagesize
         elif compression == 1:
             self.tile = [
-                ("sgi_rle", (0, 0) + self.size, headlen, (rawmode, orientation, bpc))
+                ImageFile._Tile(
+                    "sgi_rle", (0, 0) + self.size, headlen, (rawmode, orientation, bpc)
+                )
             ]
 
 
-def _save(im, fp, filename):
-    if im.mode != "RGB" and im.mode != "RGBA" and im.mode != "L":
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
+    if im.mode not in {"RGB", "RGBA", "L"}:
         msg = "Unsupported SGI image mode"
         raise ValueError(msg)
 
@@ -155,7 +167,7 @@ def _save(im, fp, filename):
     # Z Dimension: Number of channels
     z = len(im.mode)
 
-    if dim == 1 or dim == 2:
+    if dim in {1, 2}:
         z = 1
 
     # assert we've got the right number of bands.
@@ -169,7 +181,8 @@ def _save(im, fp, filename):
     pinmax = 255
     # Image name (79 characters max, truncated below in write)
     img_name = os.path.splitext(os.path.basename(filename))[0]
-    img_name = img_name.encode("ascii", "ignore")
+    if isinstance(img_name, str):
+        img_name = img_name.encode("ascii", "ignore")
     # Standard representation of pixel in the file
     colormap = 0
     fp.write(struct.pack(">h", magic_number))
@@ -201,7 +214,10 @@ def _save(im, fp, filename):
 class SGI16Decoder(ImageFile.PyDecoder):
     _pulls_fd = True
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
+        assert self.fd is not None
+        assert self.im is not None
+
         rawmode, stride, orientation = self.args
         pagesize = self.state.xsize * self.state.ysize
         zsize = len(self.mode)
diff --git a/src/PIL/SpiderImagePlugin.py b/src/PIL/SpiderImagePlugin.py
index 5614957c1..075073f9f 100644
--- a/src/PIL/SpiderImagePlugin.py
+++ b/src/PIL/SpiderImagePlugin.py
@@ -32,14 +32,17 @@
 # Details about the Spider image format:
 # https://spider.wadsworth.org/spider_doc/spider/docs/image_doc.html
 #
+from __future__ import annotations
+
 import os
 import struct
 import sys
+from typing import IO, TYPE_CHECKING, Any, cast
 
 from . import Image, ImageFile
 
 
-def isInt(f):
+def isInt(f: Any) -> int:
     try:
         i = int(f)
         if f - i == 0:
@@ -59,7 +62,7 @@ iforms = [1, 3, -11, -12, -21, -22]
 # otherwise returns 0
 
 
-def isSpiderHeader(t):
+def isSpiderHeader(t: tuple[float, ...]) -> int:
     h = (99,) + t  # add 1 value so can use spider header index start=1
     # header values 1,2,5,12,13,22,23 should be integers
     for i in [1, 2, 5, 12, 13, 22, 23]:
@@ -79,7 +82,7 @@ def isSpiderHeader(t):
     return labbyt
 
 
-def isSpiderImage(filename):
+def isSpiderImage(filename: str) -> int:
     with open(filename, "rb") as fp:
         f = fp.read(92)  # read 23 * 4 bytes
     t = struct.unpack(">23f", f)  # try big-endian first
@@ -95,7 +98,7 @@ class SpiderImageFile(ImageFile.ImageFile):
     format_description = "Spider 2D image"
     _close_exclusive_fp_after_loading = False
 
-    def _open(self):
+    def _open(self) -> None:
         # check header
         n = 27 * 4  # read 27 float values
         f = self.fp.read(n)
@@ -149,27 +152,29 @@ class SpiderImageFile(ImageFile.ImageFile):
             self.rawmode = "F;32BF"
         else:
             self.rawmode = "F;32F"
-        self.mode = "F"
+        self._mode = "F"
 
-        self.tile = [("raw", (0, 0) + self.size, offset, (self.rawmode, 0, 1))]
+        self.tile = [
+            ImageFile._Tile("raw", (0, 0) + self.size, offset, (self.rawmode, 0, 1))
+        ]
         self._fp = self.fp  # FIXME: hack
 
     @property
-    def n_frames(self):
+    def n_frames(self) -> int:
         return self._nimages
 
     @property
-    def is_animated(self):
+    def is_animated(self) -> bool:
         return self._nimages > 1
 
     # 1st image index is zero (although SPIDER imgnumber starts at 1)
-    def tell(self):
+    def tell(self) -> int:
         if self.imgnumber < 1:
             return 0
         else:
             return self.imgnumber - 1
 
-    def seek(self, frame):
+    def seek(self, frame: int) -> None:
         if self.istack == 0:
             msg = "attempt to seek in a non-stack file"
             raise EOFError(msg)
@@ -181,16 +186,21 @@ class SpiderImageFile(ImageFile.ImageFile):
         self._open()
 
     # returns a byte image after rescaling to 0..255
-    def convert2byte(self, depth=255):
-        (minimum, maximum) = self.getextrema()
-        m = 1
+    def convert2byte(self, depth: int = 255) -> Image.Image:
+        extrema = self.getextrema()
+        assert isinstance(extrema[0], float)
+        minimum, maximum = cast(tuple[float, float], extrema)
+        m: float = 1
         if maximum != minimum:
             m = depth / (maximum - minimum)
         b = -m * minimum
-        return self.point(lambda i, m=m, b=b: i * m + b).convert("L")
+        return self.point(lambda i: i * m + b).convert("L")
+
+    if TYPE_CHECKING:
+        from . import ImageTk
 
     # returns a ImageTk.PhotoImage object, after rescaling to 0..255
-    def tkPhotoImage(self):
+    def tkPhotoImage(self) -> ImageTk.PhotoImage:
         from . import ImageTk
 
         return ImageTk.PhotoImage(self.convert2byte(), palette=256)
@@ -201,10 +211,10 @@ class SpiderImageFile(ImageFile.ImageFile):
 
 
 # given a list of filenames, return a list of images
-def loadImageSeries(filelist=None):
+def loadImageSeries(filelist: list[str] | None = None) -> list[SpiderImageFile] | None:
     """create a list of :py:class:`~PIL.Image.Image` objects for use in a montage"""
     if filelist is None or len(filelist) < 1:
-        return
+        return None
 
     imglist = []
     for img in filelist:
@@ -216,7 +226,7 @@ def loadImageSeries(filelist=None):
                 im = im.convert2byte()
         except Exception:
             if not isSpiderImage(img):
-                print(img + " is not a Spider image file")
+                print(f"{img} is not a Spider image file")
             continue
         im.info["filename"] = img
         imglist.append(im)
@@ -227,7 +237,7 @@ def loadImageSeries(filelist=None):
 # For saving images in Spider format
 
 
-def makeSpiderHeader(im):
+def makeSpiderHeader(im: Image.Image) -> list[bytes]:
     nsam, nrow = im.size
     lenbyt = nsam * 4  # There are labrec records in the header
     labrec = int(1024 / lenbyt)
@@ -238,9 +248,7 @@ def makeSpiderHeader(im):
     if nvalues < 23:
         return []
 
-    hdr = []
-    for i in range(nvalues):
-        hdr.append(0.0)
+    hdr = [0.0] * nvalues
 
     # NB these are Fortran indices
     hdr[1] = 1.0  # nslice (=1 for an image)
@@ -259,7 +267,7 @@ def makeSpiderHeader(im):
     return [struct.pack("f", v) for v in hdr]
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if im.mode[0] != "F":
         im = im.convert("F")
 
@@ -272,12 +280,15 @@ def _save(im, fp, filename):
     fp.writelines(hdr)
 
     rawmode = "F;32NF"  # 32-bit native floating point
-    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, 1))])
+    ImageFile._save(
+        im, fp, [ImageFile._Tile("raw", (0, 0) + im.size, 0, (rawmode, 0, 1))]
+    )
 
 
-def _save_spider(im, fp, filename):
+def _save_spider(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     # get the filename extension and register it with Image
-    ext = os.path.splitext(filename)[1]
+    filename_ext = os.path.splitext(filename)[1]
+    ext = filename_ext.decode() if isinstance(filename_ext, bytes) else filename_ext
     Image.register_extension(SpiderImageFile.format, ext)
     _save(im, fp, filename)
 
@@ -299,10 +310,10 @@ if __name__ == "__main__":
         sys.exit()
 
     with Image.open(filename) as im:
-        print("image: " + str(im))
-        print("format: " + str(im.format))
-        print("size: " + str(im.size))
-        print("mode: " + str(im.mode))
+        print(f"image: {im}")
+        print(f"format: {im.format}")
+        print(f"size: {im.size}")
+        print(f"mode: {im.mode}")
         print("max, min: ", end=" ")
         print(im.getextrema())
 
diff --git a/src/PIL/SunImagePlugin.py b/src/PIL/SunImagePlugin.py
index 6712583d7..8912379ea 100644
--- a/src/PIL/SunImagePlugin.py
+++ b/src/PIL/SunImagePlugin.py
@@ -15,13 +15,13 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 from . import Image, ImageFile, ImagePalette
 from ._binary import i32be as i32
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return len(prefix) >= 4 and i32(prefix) == 0x59A66A95
 
 
@@ -33,7 +33,7 @@ class SunImageFile(ImageFile.ImageFile):
     format = "SUN"
     format_description = "Sun Raster File"
 
-    def _open(self):
+    def _open(self) -> None:
         # The Sun Raster file header is 32 bytes in length
         # and has the following format:
 
@@ -49,6 +49,8 @@ class SunImageFile(ImageFile.ImageFile):
         #         DWORD ColorMapLength;   /* Size of the color map in bytes */
         #     } SUNRASTER;
 
+        assert self.fp is not None
+
         # HEAD
         s = self.fp.read(32)
         if not _accept(s):
@@ -66,21 +68,21 @@ class SunImageFile(ImageFile.ImageFile):
         palette_length = i32(s, 28)
 
         if depth == 1:
-            self.mode, rawmode = "1", "1;I"
+            self._mode, rawmode = "1", "1;I"
         elif depth == 4:
-            self.mode, rawmode = "L", "L;4"
+            self._mode, rawmode = "L", "L;4"
         elif depth == 8:
-            self.mode = rawmode = "L"
+            self._mode = rawmode = "L"
         elif depth == 24:
             if file_type == 3:
-                self.mode, rawmode = "RGB", "RGB"
+                self._mode, rawmode = "RGB", "RGB"
             else:
-                self.mode, rawmode = "RGB", "BGR"
+                self._mode, rawmode = "RGB", "BGR"
         elif depth == 32:
             if file_type == 3:
-                self.mode, rawmode = "RGB", "RGBX"
+                self._mode, rawmode = "RGB", "RGBX"
             else:
-                self.mode, rawmode = "RGB", "BGRX"
+                self._mode, rawmode = "RGB", "BGRX"
         else:
             msg = "Unsupported Mode/Bit Depth"
             raise SyntaxError(msg)
@@ -97,7 +99,7 @@ class SunImageFile(ImageFile.ImageFile):
             offset = offset + palette_length
             self.palette = ImagePalette.raw("RGB;L", self.fp.read(palette_length))
             if self.mode == "L":
-                self.mode = "P"
+                self._mode = "P"
                 rawmode = rawmode.replace("L", "P")
 
         # 16 bit boundaries on stride
@@ -122,9 +124,13 @@ class SunImageFile(ImageFile.ImageFile):
         # (https://www.fileformat.info/format/sunraster/egff.htm)
 
         if file_type in (0, 1, 3, 4, 5):
-            self.tile = [("raw", (0, 0) + self.size, offset, (rawmode, stride))]
+            self.tile = [
+                ImageFile._Tile("raw", (0, 0) + self.size, offset, (rawmode, stride))
+            ]
         elif file_type == 2:
-            self.tile = [("sun_rle", (0, 0) + self.size, offset, rawmode)]
+            self.tile = [
+                ImageFile._Tile("sun_rle", (0, 0) + self.size, offset, rawmode)
+            ]
         else:
             msg = "Unsupported Sun Raster file type"
             raise SyntaxError(msg)
diff --git a/src/PIL/TarIO.py b/src/PIL/TarIO.py
index 32928f6af..779288b1c 100644
--- a/src/PIL/TarIO.py
+++ b/src/PIL/TarIO.py
@@ -13,16 +13,17 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import io
 
 from . import ContainerIO
 
 
-class TarIO(ContainerIO.ContainerIO):
+class TarIO(ContainerIO.ContainerIO[bytes]):
     """A file object that provides read access to a given member of a TAR file."""
 
-    def __init__(self, tarfile, file):
+    def __init__(self, tarfile: str, file: str) -> None:
         """
         Create file object.
 
@@ -54,13 +55,3 @@ class TarIO(ContainerIO.ContainerIO):
 
         # Open region
         super().__init__(self.fh, self.fh.tell(), size)
-
-    # Context manager support
-    def __enter__(self):
-        return self
-
-    def __exit__(self, *args):
-        self.close()
-
-    def close(self):
-        self.fh.close()
diff --git a/src/PIL/TgaImagePlugin.py b/src/PIL/TgaImagePlugin.py
index 67dfc3d3c..90d5b5cf4 100644
--- a/src/PIL/TgaImagePlugin.py
+++ b/src/PIL/TgaImagePlugin.py
@@ -15,9 +15,10 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 import warnings
+from typing import IO
 
 from . import Image, ImageFile, ImagePalette
 from ._binary import i16le as i16
@@ -35,7 +36,7 @@ MODES = {
     (3, 1): "1",
     (3, 8): "L",
     (3, 16): "LA",
-    (2, 16): "BGR;5",
+    (2, 16): "BGRA;15Z",
     (2, 24): "BGR",
     (2, 32): "BGRA",
 }
@@ -49,8 +50,10 @@ class TgaImageFile(ImageFile.ImageFile):
     format = "TGA"
     format_description = "Targa"
 
-    def _open(self):
+    def _open(self) -> None:
         # process header
+        assert self.fp is not None
+
         s = self.fp.read(18)
 
         id_len = s[0]
@@ -76,17 +79,15 @@ class TgaImageFile(ImageFile.ImageFile):
 
         # image mode
         if imagetype in (3, 11):
-            self.mode = "L"
+            self._mode = "L"
             if depth == 1:
-                self.mode = "1"  # ???
+                self._mode = "1"  # ???
             elif depth == 16:
-                self.mode = "LA"
+                self._mode = "LA"
         elif imagetype in (1, 9):
-            self.mode = "P"
+            self._mode = "P" if colormaptype else "L"
         elif imagetype in (2, 10):
-            self.mode = "RGB"
-            if depth == 32:
-                self.mode = "RGBA"
+            self._mode = "RGB" if depth == 24 else "RGBA"
         else:
             msg = "unknown TGA mode"
             raise SyntaxError(msg)
@@ -115,16 +116,20 @@ class TgaImageFile(ImageFile.ImageFile):
             start, size, mapdepth = i16(s, 3), i16(s, 5), s[7]
             if mapdepth == 16:
                 self.palette = ImagePalette.raw(
-                    "BGR;15", b"\0" * 2 * start + self.fp.read(2 * size)
+                    "BGRA;15Z", bytes(2 * start) + self.fp.read(2 * size)
                 )
+                self.palette.mode = "RGBA"
             elif mapdepth == 24:
                 self.palette = ImagePalette.raw(
-                    "BGR", b"\0" * 3 * start + self.fp.read(3 * size)
+                    "BGR", bytes(3 * start) + self.fp.read(3 * size)
                 )
             elif mapdepth == 32:
                 self.palette = ImagePalette.raw(
-                    "BGRA", b"\0" * 4 * start + self.fp.read(4 * size)
+                    "BGRA", bytes(4 * start) + self.fp.read(4 * size)
                 )
+            else:
+                msg = "unknown TGA map depth"
+                raise SyntaxError(msg)
 
         # setup tile descriptor
         try:
@@ -132,7 +137,7 @@ class TgaImageFile(ImageFile.ImageFile):
             if imagetype & 8:
                 # compressed
                 self.tile = [
-                    (
+                    ImageFile._Tile(
                         "tga_rle",
                         (0, 0) + self.size,
                         self.fp.tell(),
@@ -141,7 +146,7 @@ class TgaImageFile(ImageFile.ImageFile):
                 ]
             else:
                 self.tile = [
-                    (
+                    ImageFile._Tile(
                         "raw",
                         (0, 0) + self.size,
                         self.fp.tell(),
@@ -151,7 +156,7 @@ class TgaImageFile(ImageFile.ImageFile):
         except KeyError:
             pass  # cannot decode
 
-    def load_end(self):
+    def load_end(self) -> None:
         if self._flip_horizontally:
             self.im = self.im.transpose(Image.Transpose.FLIP_LEFT_RIGHT)
 
@@ -171,7 +176,7 @@ SAVE = {
 }
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     try:
         rawmode, bits, colormaptype, imagetype = SAVE[im.mode]
     except KeyError as e:
@@ -231,11 +236,15 @@ def _save(im, fp, filename):
 
     if rle:
         ImageFile._save(
-            im, fp, [("tga_rle", (0, 0) + im.size, 0, (rawmode, orientation))]
+            im,
+            fp,
+            [ImageFile._Tile("tga_rle", (0, 0) + im.size, 0, (rawmode, orientation))],
         )
     else:
         ImageFile._save(
-            im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, orientation))]
+            im,
+            fp,
+            [ImageFile._Tile("raw", (0, 0) + im.size, 0, (rawmode, 0, orientation))],
         )
 
     # write targa version 2 footer
diff --git a/src/PIL/TiffImagePlugin.py b/src/PIL/TiffImagePlugin.py
index 86961e6ef..08bb78915 100644
--- a/src/PIL/TiffImagePlugin.py
+++ b/src/PIL/TiffImagePlugin.py
@@ -38,6 +38,8 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
 import io
 import itertools
 import logging
@@ -45,22 +47,28 @@ import math
 import os
 import struct
 import warnings
-from collections.abc import MutableMapping
+from collections.abc import Iterator, MutableMapping
 from fractions import Fraction
 from numbers import Number, Rational
+from typing import IO, TYPE_CHECKING, Any, Callable, NoReturn, cast
 
 from . import ExifTags, Image, ImageFile, ImageOps, ImagePalette, TiffTags
 from ._binary import i16be as i16
 from ._binary import i32be as i32
 from ._binary import o8
+from ._deprecate import deprecate
+from ._typing import StrOrBytesPath
+from ._util import is_path
 from .TiffTags import TYPES
 
+if TYPE_CHECKING:
+    from ._typing import Buffer, IntegralLike
+
 logger = logging.getLogger(__name__)
 
 # Set these to true to force use of libtiff for reading or writing.
 READ_LIBTIFF = False
 WRITE_LIBTIFF = False
-IFD_LEGACY_API = True
 STRIP_SIZE = 65536
 
 II = b"II"  # little-endian (Intel style)
@@ -71,6 +79,7 @@ MM = b"MM"  # big-endian (Motorola style)
 # Read TIFF files
 
 # a few tag names, just to make the code below a bit more readable
+OSUBFILETYPE = 255
 IMAGEWIDTH = 256
 IMAGELENGTH = 257
 BITSPERSAMPLE = 258
@@ -196,12 +205,12 @@ OPEN_INFO = {
     (MM, 2, (1,), 2, (8, 8, 8), ()): ("RGB", "RGB;R"),
     (II, 2, (1,), 1, (8, 8, 8, 8), ()): ("RGBA", "RGBA"),  # missing ExtraSamples
     (MM, 2, (1,), 1, (8, 8, 8, 8), ()): ("RGBA", "RGBA"),  # missing ExtraSamples
-    (II, 2, (1,), 1, (8, 8, 8, 8), (0,)): ("RGBX", "RGBX"),
-    (MM, 2, (1,), 1, (8, 8, 8, 8), (0,)): ("RGBX", "RGBX"),
-    (II, 2, (1,), 1, (8, 8, 8, 8, 8), (0, 0)): ("RGBX", "RGBXX"),
-    (MM, 2, (1,), 1, (8, 8, 8, 8, 8), (0, 0)): ("RGBX", "RGBXX"),
-    (II, 2, (1,), 1, (8, 8, 8, 8, 8, 8), (0, 0, 0)): ("RGBX", "RGBXXX"),
-    (MM, 2, (1,), 1, (8, 8, 8, 8, 8, 8), (0, 0, 0)): ("RGBX", "RGBXXX"),
+    (II, 2, (1,), 1, (8, 8, 8, 8), (0,)): ("RGB", "RGBX"),
+    (MM, 2, (1,), 1, (8, 8, 8, 8), (0,)): ("RGB", "RGBX"),
+    (II, 2, (1,), 1, (8, 8, 8, 8, 8), (0, 0)): ("RGB", "RGBXX"),
+    (MM, 2, (1,), 1, (8, 8, 8, 8, 8), (0, 0)): ("RGB", "RGBXX"),
+    (II, 2, (1,), 1, (8, 8, 8, 8, 8, 8), (0, 0, 0)): ("RGB", "RGBXXX"),
+    (MM, 2, (1,), 1, (8, 8, 8, 8, 8, 8), (0, 0, 0)): ("RGB", "RGBXXX"),
     (II, 2, (1,), 1, (8, 8, 8, 8), (1,)): ("RGBA", "RGBa"),
     (MM, 2, (1,), 1, (8, 8, 8, 8), (1,)): ("RGBA", "RGBa"),
     (II, 2, (1,), 1, (8, 8, 8, 8, 8), (1, 0)): ("RGBA", "RGBaX"),
@@ -220,8 +229,8 @@ OPEN_INFO = {
     (MM, 2, (1,), 1, (16, 16, 16), ()): ("RGB", "RGB;16B"),
     (II, 2, (1,), 1, (16, 16, 16, 16), ()): ("RGBA", "RGBA;16L"),
     (MM, 2, (1,), 1, (16, 16, 16, 16), ()): ("RGBA", "RGBA;16B"),
-    (II, 2, (1,), 1, (16, 16, 16, 16), (0,)): ("RGBX", "RGBX;16L"),
-    (MM, 2, (1,), 1, (16, 16, 16, 16), (0,)): ("RGBX", "RGBX;16B"),
+    (II, 2, (1,), 1, (16, 16, 16, 16), (0,)): ("RGB", "RGBX;16L"),
+    (MM, 2, (1,), 1, (16, 16, 16, 16), (0,)): ("RGB", "RGBX;16B"),
     (II, 2, (1,), 1, (16, 16, 16, 16), (1,)): ("RGBA", "RGBa;16L"),
     (MM, 2, (1,), 1, (16, 16, 16, 16), (1,)): ("RGBA", "RGBa;16B"),
     (II, 2, (1,), 1, (16, 16, 16, 16), (2,)): ("RGBA", "RGBA;16L"),
@@ -240,6 +249,7 @@ OPEN_INFO = {
     (MM, 3, (1,), 2, (4,), ()): ("P", "P;4R"),
     (II, 3, (1,), 1, (8,), ()): ("P", "P"),
     (MM, 3, (1,), 1, (8,), ()): ("P", "P"),
+    (II, 3, (1,), 1, (8, 8), (0,)): ("P", "PX"),
     (II, 3, (1,), 1, (8, 8), (2,)): ("PA", "PA"),
     (MM, 3, (1,), 1, (8, 8), (2,)): ("PA", "PA"),
     (II, 3, (1,), 2, (8,), ()): ("P", "P;R"),
@@ -251,6 +261,9 @@ OPEN_INFO = {
     (II, 5, (1,), 1, (8, 8, 8, 8, 8, 8), (0, 0)): ("CMYK", "CMYKXX"),
     (MM, 5, (1,), 1, (8, 8, 8, 8, 8, 8), (0, 0)): ("CMYK", "CMYKXX"),
     (II, 5, (1,), 1, (16, 16, 16, 16), ()): ("CMYK", "CMYK;16L"),
+    (MM, 5, (1,), 1, (16, 16, 16, 16), ()): ("CMYK", "CMYK;16B"),
+    (II, 6, (1,), 1, (8,), ()): ("L", "L"),
+    (MM, 6, (1,), 1, (8,), ()): ("L", "L"),
     # JPEG compressed images handled by LibTiff and auto-converted to RGBX
     # Minimal Baseline TIFF requires YCbCr images to have 3 SamplesPerPixel
     (II, 6, (1,), 1, (8, 8, 8), ()): ("RGB", "RGBX"),
@@ -270,27 +283,34 @@ PREFIXES = [
     b"II\x2B\x00",  # BigTIFF with little-endian byte order
 ]
 
+if not getattr(Image.core, "libtiff_support_custom_tags", True):
+    deprecate("Support for LibTIFF earlier than version 4", 12)
 
-def _accept(prefix):
+
+def _accept(prefix: bytes) -> bool:
     return prefix[:4] in PREFIXES
 
 
-def _limit_rational(val, max_val):
+def _limit_rational(
+    val: float | Fraction | IFDRational, max_val: int
+) -> tuple[IntegralLike, IntegralLike]:
     inv = abs(val) > 1
     n_d = IFDRational(1 / val if inv else val).limit_rational(max_val)
     return n_d[::-1] if inv else n_d
 
 
-def _limit_signed_rational(val, max_val, min_val):
+def _limit_signed_rational(
+    val: IFDRational, max_val: int, min_val: int
+) -> tuple[IntegralLike, IntegralLike]:
     frac = Fraction(val)
-    n_d = frac.numerator, frac.denominator
+    n_d: tuple[IntegralLike, IntegralLike] = frac.numerator, frac.denominator
 
-    if min(n_d) < min_val:
+    if min(float(i) for i in n_d) < min_val:
         n_d = _limit_rational(val, abs(min_val))
 
-    if max(n_d) > max_val:
-        val = Fraction(*n_d)
-        n_d = _limit_rational(val, max_val)
+    n_d_float = tuple(float(i) for i in n_d)
+    if max(n_d_float) > max_val:
+        n_d = _limit_rational(n_d_float[0] / n_d_float[1], max_val)
 
     return n_d
 
@@ -302,6 +322,15 @@ _load_dispatch = {}
 _write_dispatch = {}
 
 
+def _delegate(op: str) -> Any:
+    def delegate(
+        self: IFDRational, *args: tuple[float, ...]
+    ) -> bool | float | Fraction:
+        return getattr(self._val, op)(*args)
+
+    return delegate
+
+
 class IFDRational(Rational):
     """Implements a rational class where 0/0 is a legal value to match
     the in the wild use of exif rationals.
@@ -316,12 +345,15 @@ class IFDRational(Rational):
 
     __slots__ = ("_numerator", "_denominator", "_val")
 
-    def __init__(self, value, denominator=1):
+    def __init__(
+        self, value: float | Fraction | IFDRational, denominator: int = 1
+    ) -> None:
         """
         :param value: either an integer numerator, a
         float/rational/other number, or an IFDRational
         :param denominator: Optional integer denominator
         """
+        self._val: Fraction | float
         if isinstance(value, IFDRational):
             self._numerator = value.numerator
             self._denominator = value.denominator
@@ -332,25 +364,30 @@ class IFDRational(Rational):
             self._numerator = value.numerator
             self._denominator = value.denominator
         else:
-            self._numerator = value
+            if TYPE_CHECKING:
+                self._numerator = cast(IntegralLike, value)
+            else:
+                self._numerator = value
             self._denominator = denominator
 
         if denominator == 0:
             self._val = float("nan")
         elif denominator == 1:
             self._val = Fraction(value)
+        elif int(value) == value:
+            self._val = Fraction(int(value), denominator)
         else:
-            self._val = Fraction(value, denominator)
+            self._val = Fraction(value / denominator)
 
     @property
-    def numerator(self):
+    def numerator(self) -> IntegralLike:
         return self._numerator
 
     @property
-    def denominator(self):
+    def denominator(self) -> int:
         return self._denominator
 
-    def limit_rational(self, max_denominator):
+    def limit_rational(self, max_denominator: int) -> tuple[IntegralLike, int]:
         """
 
         :param max_denominator: Integer, the maximum denominator value
@@ -360,16 +397,17 @@ class IFDRational(Rational):
         if self.denominator == 0:
             return self.numerator, self.denominator
 
+        assert isinstance(self._val, Fraction)
         f = self._val.limit_denominator(max_denominator)
         return f.numerator, f.denominator
 
-    def __repr__(self):
+    def __repr__(self) -> str:
         return str(float(self._val))
 
-    def __hash__(self):
+    def __hash__(self) -> int:
         return self._val.__hash__()
 
-    def __eq__(self, other):
+    def __eq__(self, other: object) -> bool:
         val = self._val
         if isinstance(other, IFDRational):
             other = other._val
@@ -377,22 +415,21 @@ class IFDRational(Rational):
             val = float(val)
         return val == other
 
-    def __getstate__(self):
+    def __getstate__(self) -> list[float | Fraction | IntegralLike]:
         return [self._val, self._numerator, self._denominator]
 
-    def __setstate__(self, state):
+    def __setstate__(self, state: list[float | Fraction | IntegralLike]) -> None:
         IFDRational.__init__(self, 0)
         _val, _numerator, _denominator = state
+        assert isinstance(_val, (float, Fraction))
         self._val = _val
-        self._numerator = _numerator
+        if TYPE_CHECKING:
+            self._numerator = cast(IntegralLike, _numerator)
+        else:
+            self._numerator = _numerator
+        assert isinstance(_denominator, int)
         self._denominator = _denominator
 
-    def _delegate(op):
-        def delegate(self, *args):
-            return getattr(self._val, op)(*args)
-
-        return delegate
-
     """ a = ['add','radd', 'sub', 'rsub', 'mul', 'rmul',
              'truediv', 'rtruediv', 'floordiv', 'rfloordiv',
              'mod','rmod', 'pow','rpow', 'pos', 'neg',
@@ -432,7 +469,54 @@ class IFDRational(Rational):
         __int__ = _delegate("__int__")
 
 
-class ImageFileDirectory_v2(MutableMapping):
+_LoaderFunc = Callable[["ImageFileDirectory_v2", bytes, bool], Any]
+
+
+def _register_loader(idx: int, size: int) -> Callable[[_LoaderFunc], _LoaderFunc]:
+    def decorator(func: _LoaderFunc) -> _LoaderFunc:
+        from .TiffTags import TYPES
+
+        if func.__name__.startswith("load_"):
+            TYPES[idx] = func.__name__[5:].replace("_", " ")
+        _load_dispatch[idx] = size, func  # noqa: F821
+        return func
+
+    return decorator
+
+
+def _register_writer(idx: int) -> Callable[[Callable[..., Any]], Callable[..., Any]]:
+    def decorator(func: Callable[..., Any]) -> Callable[..., Any]:
+        _write_dispatch[idx] = func  # noqa: F821
+        return func
+
+    return decorator
+
+
+def _register_basic(idx_fmt_name: tuple[int, str, str]) -> None:
+    from .TiffTags import TYPES
+
+    idx, fmt, name = idx_fmt_name
+    TYPES[idx] = name
+    size = struct.calcsize(f"={fmt}")
+
+    def basic_handler(
+        self: ImageFileDirectory_v2, data: bytes, legacy_api: bool = True
+    ) -> tuple[Any, ...]:
+        return self._unpack(f"{len(data) // size}{fmt}", data)
+
+    _load_dispatch[idx] = size, basic_handler  # noqa: F821
+    _write_dispatch[idx] = lambda self, *values: (  # noqa: F821
+        b"".join(self._pack(fmt, value) for value in values)
+    )
+
+
+if TYPE_CHECKING:
+    _IFDv2Base = MutableMapping[int, Any]
+else:
+    _IFDv2Base = MutableMapping
+
+
+class ImageFileDirectory_v2(_IFDv2Base):
     """This class represents a TIFF tag directory.  To speed things up, we
     don't decode tags unless they're asked for.
 
@@ -493,7 +577,15 @@ class ImageFileDirectory_v2(MutableMapping):
 
     """
 
-    def __init__(self, ifh=b"II\052\0\0\0\0\0", prefix=None, group=None):
+    _load_dispatch: dict[int, tuple[int, _LoaderFunc]] = {}
+    _write_dispatch: dict[int, Callable[..., Any]] = {}
+
+    def __init__(
+        self,
+        ifh: bytes = b"II\052\0\0\0\0\0",
+        prefix: bytes | None = None,
+        group: int | None = None,
+    ) -> None:
         """Initialize an ImageFileDirectory.
 
         To construct an ImageFileDirectory from a real file, pass the 8-byte
@@ -517,35 +609,40 @@ class ImageFileDirectory_v2(MutableMapping):
             raise SyntaxError(msg)
         self._bigtiff = ifh[2] == 43
         self.group = group
-        self.tagtype = {}
+        self.tagtype: dict[int, int] = {}
         """ Dictionary of tag types """
         self.reset()
-        (self.next,) = (
-            self._unpack("Q", ifh[8:]) if self._bigtiff else self._unpack("L", ifh[4:])
+        self.next = (
+            self._unpack("Q", ifh[8:])[0]
+            if self._bigtiff
+            else self._unpack("L", ifh[4:])[0]
         )
         self._legacy_api = False
 
     prefix = property(lambda self: self._prefix)
     offset = property(lambda self: self._offset)
-    legacy_api = property(lambda self: self._legacy_api)
+
+    @property
+    def legacy_api(self) -> bool:
+        return self._legacy_api
 
     @legacy_api.setter
-    def legacy_api(self, value):
+    def legacy_api(self, value: bool) -> NoReturn:
         msg = "Not allowing setting of legacy api"
         raise Exception(msg)
 
-    def reset(self):
-        self._tags_v1 = {}  # will remain empty if legacy_api is false
-        self._tags_v2 = {}  # main tag storage
-        self._tagdata = {}
+    def reset(self) -> None:
+        self._tags_v1: dict[int, Any] = {}  # will remain empty if legacy_api is false
+        self._tags_v2: dict[int, Any] = {}  # main tag storage
+        self._tagdata: dict[int, bytes] = {}
         self.tagtype = {}  # added 2008-06-05 by Florian Hoech
         self._next = None
-        self._offset = None
+        self._offset: int | None = None
 
-    def __str__(self):
+    def __str__(self) -> str:
         return str(dict(self))
 
-    def named(self):
+    def named(self) -> dict[str, Any]:
         """
         :returns: dict of name|key: value
 
@@ -556,10 +653,10 @@ class ImageFileDirectory_v2(MutableMapping):
             for code, value in self.items()
         }
 
-    def __len__(self):
+    def __len__(self) -> int:
         return len(set(self._tagdata) | set(self._tags_v2))
 
-    def __getitem__(self, tag):
+    def __getitem__(self, tag: int) -> Any:
         if tag not in self._tags_v2:  # unpack on the fly
             data = self._tagdata[tag]
             typ = self.tagtype[tag]
@@ -570,13 +667,13 @@ class ImageFileDirectory_v2(MutableMapping):
             val = (val,)
         return val
 
-    def __contains__(self, tag):
+    def __contains__(self, tag: object) -> bool:
         return tag in self._tags_v2 or tag in self._tagdata
 
-    def __setitem__(self, tag, value):
+    def __setitem__(self, tag: int, value: Any) -> None:
         self._setitem(tag, value, self.legacy_api)
 
-    def _setitem(self, tag, value, legacy_api):
+    def _setitem(self, tag: int, value: Any, legacy_api: bool) -> None:
         basetypes = (Number, bytes, str)
 
         info = TiffTags.lookup(tag, self.group)
@@ -588,22 +685,33 @@ class ImageFileDirectory_v2(MutableMapping):
             else:
                 self.tagtype[tag] = TiffTags.UNDEFINED
                 if all(isinstance(v, IFDRational) for v in values):
-                    self.tagtype[tag] = (
-                        TiffTags.RATIONAL
-                        if all(v >= 0 for v in values)
-                        else TiffTags.SIGNED_RATIONAL
-                    )
-                elif all(isinstance(v, int) for v in values):
-                    if all(0 <= v < 2**16 for v in values):
-                        self.tagtype[tag] = TiffTags.SHORT
-                    elif all(-(2**15) < v < 2**15 for v in values):
-                        self.tagtype[tag] = TiffTags.SIGNED_SHORT
+                    for v in values:
+                        assert isinstance(v, IFDRational)
+                        if v < 0:
+                            self.tagtype[tag] = TiffTags.SIGNED_RATIONAL
+                            break
                     else:
-                        self.tagtype[tag] = (
-                            TiffTags.LONG
-                            if all(v >= 0 for v in values)
-                            else TiffTags.SIGNED_LONG
-                        )
+                        self.tagtype[tag] = TiffTags.RATIONAL
+                elif all(isinstance(v, int) for v in values):
+                    short = True
+                    signed_short = True
+                    long = True
+                    for v in values:
+                        assert isinstance(v, int)
+                        if short and not (0 <= v < 2**16):
+                            short = False
+                        if signed_short and not (-(2**15) < v < 2**15):
+                            signed_short = False
+                        if long and v < 0:
+                            long = False
+                    if short:
+                        self.tagtype[tag] = TiffTags.SHORT
+                    elif signed_short:
+                        self.tagtype[tag] = TiffTags.SIGNED_SHORT
+                    elif long:
+                        self.tagtype[tag] = TiffTags.LONG
+                    else:
+                        self.tagtype[tag] = TiffTags.SIGNED_LONG
                 elif all(isinstance(v, float) for v in values):
                     self.tagtype[tag] = TiffTags.DOUBLE
                 elif all(isinstance(v, str) for v in values):
@@ -621,7 +729,10 @@ class ImageFileDirectory_v2(MutableMapping):
 
         is_ifd = self.tagtype[tag] == TiffTags.LONG and isinstance(values, dict)
         if not is_ifd:
-            values = tuple(info.cvt_enum(value) for value in values)
+            values = tuple(
+                info.cvt_enum(value) if isinstance(value, str) else value
+                for value in values
+            )
 
         dest = self._tags_v1 if legacy_api else self._tags_v2
 
@@ -656,54 +767,20 @@ class ImageFileDirectory_v2(MutableMapping):
             # Unspec'd, and length > 1
             dest[tag] = values
 
-    def __delitem__(self, tag):
+    def __delitem__(self, tag: int) -> None:
         self._tags_v2.pop(tag, None)
         self._tags_v1.pop(tag, None)
         self._tagdata.pop(tag, None)
 
-    def __iter__(self):
+    def __iter__(self) -> Iterator[int]:
         return iter(set(self._tagdata) | set(self._tags_v2))
 
-    def _unpack(self, fmt, data):
+    def _unpack(self, fmt: str, data: bytes) -> tuple[Any, ...]:
         return struct.unpack(self._endian + fmt, data)
 
-    def _pack(self, fmt, *values):
+    def _pack(self, fmt: str, *values: Any) -> bytes:
         return struct.pack(self._endian + fmt, *values)
 
-    def _register_loader(idx, size):
-        def decorator(func):
-            from .TiffTags import TYPES
-
-            if func.__name__.startswith("load_"):
-                TYPES[idx] = func.__name__[5:].replace("_", " ")
-            _load_dispatch[idx] = size, func  # noqa: F821
-            return func
-
-        return decorator
-
-    def _register_writer(idx):
-        def decorator(func):
-            _write_dispatch[idx] = func  # noqa: F821
-            return func
-
-        return decorator
-
-    def _register_basic(idx_fmt_name):
-        from .TiffTags import TYPES
-
-        idx, fmt, name = idx_fmt_name
-        TYPES[idx] = name
-        size = struct.calcsize("=" + fmt)
-        _load_dispatch[idx] = (  # noqa: F821
-            size,
-            lambda self, data, legacy_api=True: (
-                self._unpack(f"{len(data) // size}{fmt}", data)
-            ),
-        )
-        _write_dispatch[idx] = lambda self, *values: (  # noqa: F821
-            b"".join(self._pack(fmt, value) for value in values)
-        )
-
     list(
         map(
             _register_basic,
@@ -722,11 +799,11 @@ class ImageFileDirectory_v2(MutableMapping):
     )
 
     @_register_loader(1, 1)  # Basic type, except for the legacy API.
-    def load_byte(self, data, legacy_api=True):
+    def load_byte(self, data: bytes, legacy_api: bool = True) -> bytes:
         return data
 
     @_register_writer(1)  # Basic type, except for the legacy API.
-    def write_byte(self, data):
+    def write_byte(self, data: bytes | int | IFDRational) -> bytes:
         if isinstance(data, IFDRational):
             data = int(data)
         if isinstance(data, int):
@@ -734,13 +811,13 @@ class ImageFileDirectory_v2(MutableMapping):
         return data
 
     @_register_loader(2, 1)
-    def load_string(self, data, legacy_api=True):
+    def load_string(self, data: bytes, legacy_api: bool = True) -> str:
         if data.endswith(b"\0"):
             data = data[:-1]
         return data.decode("latin-1", "replace")
 
     @_register_writer(2)
-    def write_string(self, value):
+    def write_string(self, value: str | bytes | int) -> bytes:
         # remerge of https://github.com/python-pillow/Pillow/pull/1416
         if isinstance(value, int):
             value = str(value)
@@ -749,47 +826,53 @@ class ImageFileDirectory_v2(MutableMapping):
         return value + b"\0"
 
     @_register_loader(5, 8)
-    def load_rational(self, data, legacy_api=True):
+    def load_rational(
+        self, data: bytes, legacy_api: bool = True
+    ) -> tuple[tuple[int, int] | IFDRational, ...]:
         vals = self._unpack(f"{len(data) // 4}L", data)
 
-        def combine(a, b):
+        def combine(a: int, b: int) -> tuple[int, int] | IFDRational:
             return (a, b) if legacy_api else IFDRational(a, b)
 
         return tuple(combine(num, denom) for num, denom in zip(vals[::2], vals[1::2]))
 
     @_register_writer(5)
-    def write_rational(self, *values):
+    def write_rational(self, *values: IFDRational) -> bytes:
         return b"".join(
             self._pack("2L", *_limit_rational(frac, 2**32 - 1)) for frac in values
         )
 
     @_register_loader(7, 1)
-    def load_undefined(self, data, legacy_api=True):
+    def load_undefined(self, data: bytes, legacy_api: bool = True) -> bytes:
         return data
 
     @_register_writer(7)
-    def write_undefined(self, value):
+    def write_undefined(self, value: bytes | int | IFDRational) -> bytes:
+        if isinstance(value, IFDRational):
+            value = int(value)
         if isinstance(value, int):
             value = str(value).encode("ascii", "replace")
         return value
 
     @_register_loader(10, 8)
-    def load_signed_rational(self, data, legacy_api=True):
+    def load_signed_rational(
+        self, data: bytes, legacy_api: bool = True
+    ) -> tuple[tuple[int, int] | IFDRational, ...]:
         vals = self._unpack(f"{len(data) // 4}l", data)
 
-        def combine(a, b):
+        def combine(a: int, b: int) -> tuple[int, int] | IFDRational:
             return (a, b) if legacy_api else IFDRational(a, b)
 
         return tuple(combine(num, denom) for num, denom in zip(vals[::2], vals[1::2]))
 
     @_register_writer(10)
-    def write_signed_rational(self, *values):
+    def write_signed_rational(self, *values: IFDRational) -> bytes:
         return b"".join(
             self._pack("2l", *_limit_signed_rational(frac, 2**31 - 1, -(2**31)))
             for frac in values
         )
 
-    def _ensure_read(self, fp, size):
+    def _ensure_read(self, fp: IO[bytes], size: int) -> bytes:
         ret = fp.read(size)
         if len(ret) != size:
             msg = (
@@ -799,7 +882,7 @@ class ImageFileDirectory_v2(MutableMapping):
             raise OSError(msg)
         return ret
 
-    def load(self, fp):
+    def load(self, fp: IO[bytes]) -> None:
         self.reset()
         self._offset = fp.tell()
 
@@ -823,7 +906,7 @@ class ImageFileDirectory_v2(MutableMapping):
                 try:
                     unit_size, handler = self._load_dispatch[typ]
                 except KeyError:
-                    logger.debug(msg + f" - unsupported type {typ}")
+                    logger.debug("%s - unsupported type %s", msg, typ)
                     continue  # ignore unsupported type
                 size = count * unit_size
                 if size > (8 if self._bigtiff else 4):
@@ -866,11 +949,11 @@ class ImageFileDirectory_v2(MutableMapping):
             warnings.warn(str(msg))
             return
 
-    def tobytes(self, offset=0):
+    def tobytes(self, offset: int = 0) -> bytes:
         # FIXME What about tagdata?
         result = self._pack("H", len(self._tags_v2))
 
-        entries = []
+        entries: list[tuple[int, int, int, bytes, bytes]] = []
         offset = offset + len(result) + len(self._tags_v2) * 12 + 4
         stripoffsets = None
 
@@ -879,8 +962,8 @@ class ImageFileDirectory_v2(MutableMapping):
         for tag, value in sorted(self._tags_v2.items()):
             if tag == STRIPOFFSETS:
                 stripoffsets = len(entries)
-            typ = self.tagtype.get(tag)
-            logger.debug(f"Tag {tag}, Type: {typ}, Value: {repr(value)}")
+            typ = self.tagtype[tag]
+            logger.debug("Tag %s, Type: %s, Value: %s", tag, typ, repr(value))
             is_ifd = typ == TiffTags.LONG and isinstance(value, dict)
             if is_ifd:
                 if self._endian == "<":
@@ -922,14 +1005,16 @@ class ImageFileDirectory_v2(MutableMapping):
         if stripoffsets is not None:
             tag, typ, count, value, data = entries[stripoffsets]
             if data:
-                msg = "multistrip support not yet implemented"
-                raise NotImplementedError(msg)
-            value = self._pack("L", self._unpack("L", value)[0] + offset)
+                size, handler = self._load_dispatch[typ]
+                values = [val + offset for val in handler(self, data, self.legacy_api)]
+                data = self._write_dispatch[typ](self, *values)
+            else:
+                value = self._pack("L", self._unpack("L", value)[0] + offset)
             entries[stripoffsets] = tag, typ, count, value, data
 
         # pass 2: write entries to file
         for tag, typ, count, value, data in entries:
-            logger.debug(f"{tag} {typ} {count} {repr(value)} {repr(data)}")
+            logger.debug("%s %s %s %s %s", tag, typ, count, repr(value), repr(data))
             result += self._pack("HHL4s", tag, typ, count, value)
 
         # -- overwrite here for multi-page --
@@ -943,7 +1028,7 @@ class ImageFileDirectory_v2(MutableMapping):
 
         return result
 
-    def save(self, fp):
+    def save(self, fp: IO[bytes]) -> int:
         if fp.tell() == 0:  # skip TIFF header on subsequent pages
             # tiff header -- PIL always starts the first IFD at offset 8
             fp.write(self._prefix + self._pack("HL", 42, 8))
@@ -958,8 +1043,8 @@ ImageFileDirectory_v2._load_dispatch = _load_dispatch
 ImageFileDirectory_v2._write_dispatch = _write_dispatch
 for idx, name in TYPES.items():
     name = name.replace(" ", "_")
-    setattr(ImageFileDirectory_v2, "load_" + name, _load_dispatch[idx][1])
-    setattr(ImageFileDirectory_v2, "write_" + name, _write_dispatch[idx])
+    setattr(ImageFileDirectory_v2, f"load_{name}", _load_dispatch[idx][1])
+    setattr(ImageFileDirectory_v2, f"write_{name}", _write_dispatch[idx])
 del _load_dispatch, _write_dispatch, idx, name
 
 
@@ -983,7 +1068,7 @@ class ImageFileDirectory_v1(ImageFileDirectory_v2):
     ..  deprecated:: 3.0.0
     """
 
-    def __init__(self, *args, **kwargs):
+    def __init__(self, *args: Any, **kwargs: Any) -> None:
         super().__init__(*args, **kwargs)
         self._legacy_api = True
 
@@ -991,11 +1076,11 @@ class ImageFileDirectory_v1(ImageFileDirectory_v2):
     tagdata = property(lambda self: self._tagdata)
 
     # defined in ImageFileDirectory_v2
-    tagtype: dict
+    tagtype: dict[int, int]
     """Dictionary of tag types"""
 
     @classmethod
-    def from_v2(cls, original):
+    def from_v2(cls, original: ImageFileDirectory_v2) -> ImageFileDirectory_v1:
         """Returns an
         :py:class:`~PIL.TiffImagePlugin.ImageFileDirectory_v1`
         instance with the same data as is contained in the original
@@ -1012,7 +1097,7 @@ class ImageFileDirectory_v1(ImageFileDirectory_v2):
         ifd.next = original.next  # an indicator for multipage tiffs
         return ifd
 
-    def to_v2(self):
+    def to_v2(self) -> ImageFileDirectory_v2:
         """Returns an
         :py:class:`~PIL.TiffImagePlugin.ImageFileDirectory_v2`
         instance with the same data as is contained in the original
@@ -1029,20 +1114,20 @@ class ImageFileDirectory_v1(ImageFileDirectory_v2):
         ifd._tags_v2 = dict(self._tags_v2)
         return ifd
 
-    def __contains__(self, tag):
+    def __contains__(self, tag: object) -> bool:
         return tag in self._tags_v1 or tag in self._tagdata
 
-    def __len__(self):
+    def __len__(self) -> int:
         return len(set(self._tagdata) | set(self._tags_v1))
 
-    def __iter__(self):
+    def __iter__(self) -> Iterator[int]:
         return iter(set(self._tagdata) | set(self._tags_v1))
 
-    def __setitem__(self, tag, value):
+    def __setitem__(self, tag: int, value: Any) -> None:
         for legacy_api in (False, True):
             self._setitem(tag, value, legacy_api)
 
-    def __getitem__(self, tag):
+    def __getitem__(self, tag: int) -> Any:
         if tag not in self._tags_v1:  # unpack on the fly
             data = self._tagdata[tag]
             typ = self.tagtype[tag]
@@ -1055,7 +1140,7 @@ class ImageFileDirectory_v1(ImageFileDirectory_v2):
         return val
 
 
-# undone -- switch this pointer when IFD_LEGACY_API == False
+# undone -- switch this pointer
 ImageFileDirectory = ImageFileDirectory_v1
 
 
@@ -1068,16 +1153,20 @@ class TiffImageFile(ImageFile.ImageFile):
     format_description = "Adobe TIFF"
     _close_exclusive_fp_after_loading = False
 
-    def __init__(self, fp=None, filename=None):
-        self.tag_v2 = None
+    def __init__(
+        self,
+        fp: StrOrBytesPath | IO[bytes],
+        filename: str | bytes | None = None,
+    ) -> None:
+        self.tag_v2: ImageFileDirectory_v2
         """ Image file directory (tag dictionary) """
 
-        self.tag = None
+        self.tag: ImageFileDirectory_v1
         """ Legacy tag entries """
 
         super().__init__(fp, filename)
 
-    def _open(self):
+    def _open(self) -> None:
         """Open the first image in a TIFF file"""
 
         # Header
@@ -1087,62 +1176,63 @@ class TiffImageFile(ImageFile.ImageFile):
 
         self.tag_v2 = ImageFileDirectory_v2(ifh)
 
-        # legacy IFD entries will be filled in later
-        self.ifd = None
-
         # setup frame pointers
         self.__first = self.__next = self.tag_v2.next
         self.__frame = -1
         self._fp = self.fp
-        self._frame_pos = []
-        self._n_frames = None
+        self._frame_pos: list[int] = []
+        self._n_frames: int | None = None
 
         logger.debug("*** TiffImageFile._open ***")
-        logger.debug(f"- __first: {self.__first}")
-        logger.debug(f"- ifh: {repr(ifh)}")  # Use repr to avoid str(bytes)
+        logger.debug("- __first: %s", self.__first)
+        logger.debug("- ifh: %s", repr(ifh))  # Use repr to avoid str(bytes)
 
         # and load the first frame
         self._seek(0)
 
     @property
-    def n_frames(self):
-        if self._n_frames is None:
+    def n_frames(self) -> int:
+        current_n_frames = self._n_frames
+        if current_n_frames is None:
             current = self.tell()
             self._seek(len(self._frame_pos))
             while self._n_frames is None:
                 self._seek(self.tell() + 1)
             self.seek(current)
+        assert self._n_frames is not None
         return self._n_frames
 
-    def seek(self, frame):
+    def seek(self, frame: int) -> None:
         """Select a given frame as current image"""
         if not self._seek_check(frame):
             return
         self._seek(frame)
-        # Create a new core image object on second and
-        # subsequent frames in the image. Image may be
-        # different size/mode.
-        Image._decompression_bomb_check(self.size)
-        self.im = Image.core.new(self.mode, self.size)
+        if self._im is not None and (
+            self.im.size != self._tile_size or self.im.mode != self.mode
+        ):
+            # The core image will no longer be used
+            self._im = None
 
-    def _seek(self, frame):
+    def _seek(self, frame: int) -> None:
         self.fp = self._fp
 
-        # reset buffered io handle in case fp
-        # was passed to libtiff, invalidating the buffer
-        self.fp.tell()
-
         while len(self._frame_pos) <= frame:
             if not self.__next:
                 msg = "no more images in TIFF file"
                 raise EOFError(msg)
             logger.debug(
-                f"Seeking to frame {frame}, on frame {self.__frame}, "
-                f"__next {self.__next}, location: {self.fp.tell()}"
+                "Seeking to frame %s, on frame %s, __next %s, location: %s",
+                frame,
+                self.__frame,
+                self.__next,
+                self.fp.tell(),
             )
+            if self.__next >= 2**63:
+                msg = "Unable to seek to frame"
+                raise ValueError(msg)
             self.fp.seek(self.__next)
             self._frame_pos.append(self.__next)
-            logger.debug("Loading tags, location: %s" % self.fp.tell())
+            logger.debug("Loading tags, location: %s", self.fp.tell())
             self.tag_v2.load(self.fp)
             if self.tag_v2.next in self._frame_pos:
                 # This IFD has already been processed
@@ -1157,26 +1247,21 @@ class TiffImageFile(ImageFile.ImageFile):
             self.__frame += 1
         self.fp.seek(self._frame_pos[frame])
         self.tag_v2.load(self.fp)
+        if XMP in self.tag_v2:
+            self.info["xmp"] = self.tag_v2[XMP]
+        elif "xmp" in self.info:
+            del self.info["xmp"]
         self._reload_exif()
         # fill the legacy tag/ifd entries
         self.tag = self.ifd = ImageFileDirectory_v1.from_v2(self.tag_v2)
         self.__frame = frame
         self._setup()
 
-    def tell(self):
+    def tell(self) -> int:
         """Return the current frame number"""
         return self.__frame
 
-    def getxmp(self):
-        """
-        Returns a dictionary containing the XMP tags.
-        Requires defusedxml to be installed.
-
-        :returns: XMP tags in a dictionary.
-        """
-        return self._getxmp(self.tag_v2[XMP]) if XMP in self.tag_v2 else {}
-
-    def get_photoshop_blocks(self):
+    def get_photoshop_blocks(self) -> dict[int, dict[str, bytes]]:
         """
         Returns a dictionary of Photoshop "Image Resource Blocks".
         The keys are the image resource ID. For more information, see
@@ -1197,35 +1282,23 @@ class TiffImageFile(ImageFile.ImageFile):
                 val = val[math.ceil((10 + n + size) / 2) * 2 :]
         return blocks
 
-    def load(self):
+    def load(self) -> Image.core.PixelAccess | None:
         if self.tile and self.use_load_libtiff:
             return self._load_libtiff()
         return super().load()
 
-    def load_end(self):
-        if self._tile_orientation:
-            method = {
-                2: Image.Transpose.FLIP_LEFT_RIGHT,
-                3: Image.Transpose.ROTATE_180,
-                4: Image.Transpose.FLIP_TOP_BOTTOM,
-                5: Image.Transpose.TRANSPOSE,
-                6: Image.Transpose.ROTATE_270,
-                7: Image.Transpose.TRANSVERSE,
-                8: Image.Transpose.ROTATE_90,
-            }.get(self._tile_orientation)
-            if method is not None:
-                self.im = self.im.transpose(method)
-                self._size = self.im.size
+    def load_prepare(self) -> None:
+        if self._im is None:
+            Image._decompression_bomb_check(self._tile_size)
+            self.im = Image.core.new(self.mode, self._tile_size)
+        ImageFile.ImageFile.load_prepare(self)
 
+    def load_end(self) -> None:
         # allow closing if we're on the first frame, there's no next
         # This is the ImageFile.load path only, libtiff specific below.
         if not self.is_animated:
             self._close_exclusive_fp_after_loading = True
 
-            # reset buffered io handle in case fp
-            # was passed to libtiff, invalidating the buffer
-            self.fp.tell()
-
             # load IFD data from fp before it is closed
             exif = self.getexif()
             for key in TiffTags.TAGS_V2_GROUPS:
@@ -1233,7 +1306,11 @@ class TiffImageFile(ImageFile.ImageFile):
                     continue
                 exif.get_ifd(key)
 
-    def _load_libtiff(self):
+        ImageOps.exif_transpose(self, in_place=True)
+        if ExifTags.Base.Orientation in self.tag_v2:
+            del self.tag_v2[ExifTags.Base.Orientation]
+
+    def _load_libtiff(self) -> Image.core.PixelAccess | None:
         """Overload method triggered when we detect a compressed tiff
         Calls out to libtiff"""
 
@@ -1248,14 +1325,13 @@ class TiffImageFile(ImageFile.ImageFile):
         # (self._compression, (extents tuple),
         #   0, (rawmode, self._compression, fp))
         extents = self.tile[0][1]
-        args = list(self.tile[0][3])
+        args = self.tile[0][3]
 
         # To be nice on memory footprint, if there's a
         # file descriptor, use that instead of reading
         # into a string in python.
-        # libtiff closes the file descriptor, so pass in a dup.
         try:
-            fp = hasattr(self.fp, "fileno") and os.dup(self.fp.fileno())
+            fp = hasattr(self.fp, "fileno") and self.fp.fileno()
             # flush the file descriptor, prevents error on pypy 2.4+
             # should also eliminate the need for fp.tell
             # in _seek
@@ -1267,11 +1343,12 @@ class TiffImageFile(ImageFile.ImageFile):
             fp = False
 
         if fp:
-            args[2] = fp
+            assert isinstance(args, tuple)
+            args_list = list(args)
+            args_list[2] = fp
+            args = tuple(args_list)
 
-        decoder = Image._getdecoder(
-            self.mode, "libtiff", tuple(args), self.decoderconfig
-        )
+        decoder = Image._getdecoder(self.mode, "libtiff", args, self.decoderconfig)
         try:
             decoder.setimage(self.im, extents)
         except ValueError as e:
@@ -1296,8 +1373,17 @@ class TiffImageFile(ImageFile.ImageFile):
             logger.debug("have fileno, calling fileno version of the decoder.")
             if not close_self_fp:
                 self.fp.seek(0)
+            # Save and restore the file position, because libtiff will move it
+            # outside of the Python runtime, and that will confuse
+            # io.BufferedReader and possible others.
+            # NOTE: This must use os.lseek(), and not fp.tell()/fp.seek(),
+            # because the buffer read head already may not equal the actual
+            # file position, and fp.seek() may just adjust it's internal
+            # pointer and not actually seek the OS file handle.
+            pos = os.lseek(fp, 0, os.SEEK_CUR)
             # 4 bytes, otherwise the trace might error out
             n, err = decoder.decode(b"fpfp")
+            os.lseek(fp, pos, os.SEEK_SET)
         else:
             # we have something else.
             logger.debug("don't have fileno or getvalue. just reading")
@@ -1305,18 +1391,11 @@ class TiffImageFile(ImageFile.ImageFile):
             # UNDONE -- so much for that buffer size thing.
             n, err = decoder.decode(self.fp.read())
 
-        if fp:
-            try:
-                os.close(fp)
-            except OSError:
-                pass
-
         self.tile = []
         self.readonly = 0
 
         self.load_end()
 
-        # libtiff closed the fp in a, we need to close self.fp, if possible
         if close_self_fp:
             self.fp.close()
             self.fp = None  # might be shared
@@ -1326,7 +1405,7 @@ class TiffImageFile(ImageFile.ImageFile):
 
         return Image.Image.load(self)
 
-    def _setup(self):
+    def _setup(self) -> None:
         """Setup this image object based on current tags"""
 
         if 0xBC01 in self.tag_v2:
@@ -1348,18 +1427,26 @@ class TiffImageFile(ImageFile.ImageFile):
         fillorder = self.tag_v2.get(FILLORDER, 1)
 
         logger.debug("*** Summary ***")
-        logger.debug(f"- compression: {self._compression}")
-        logger.debug(f"- photometric_interpretation: {photo}")
-        logger.debug(f"- planar_configuration: {self._planar_configuration}")
-        logger.debug(f"- fill_order: {fillorder}")
-        logger.debug(f"- YCbCr subsampling: {self.tag.get(YCBCRSUBSAMPLING)}")
+        logger.debug("- compression: %s", self._compression)
+        logger.debug("- photometric_interpretation: %s", photo)
+        logger.debug("- planar_configuration: %s", self._planar_configuration)
+        logger.debug("- fill_order: %s", fillorder)
+        logger.debug("- YCbCr subsampling: %s", self.tag_v2.get(YCBCRSUBSAMPLING))
 
         # size
-        xsize = int(self.tag_v2.get(IMAGEWIDTH))
-        ysize = int(self.tag_v2.get(IMAGELENGTH))
-        self._size = xsize, ysize
+        xsize = self.tag_v2.get(IMAGEWIDTH)
+        ysize = self.tag_v2.get(IMAGELENGTH)
+        if not isinstance(xsize, int) or not isinstance(ysize, int):
+            msg = "Invalid dimensions"
+            raise ValueError(msg)
+        self._tile_size = xsize, ysize
+        orientation = self.tag_v2.get(ExifTags.Base.Orientation)
+        if orientation in (5, 6, 7, 8):
+            self._size = ysize, xsize
+        else:
+            self._size = xsize, ysize
 
-        logger.debug(f"- size: {self.size}")
+        logger.debug("- size: %s", self.size)
 
         sample_format = self.tag_v2.get(SAMPLEFORMAT, (1,))
         if len(sample_format) > 1 and max(sample_format) == min(sample_format) == 1:
@@ -1415,16 +1502,16 @@ class TiffImageFile(ImageFile.ImageFile):
             bps_tuple,
             extra_tuple,
         )
-        logger.debug(f"format key: {key}")
+        logger.debug("format key: %s", key)
         try:
-            self.mode, rawmode = OPEN_INFO[key]
+            self._mode, rawmode = OPEN_INFO[key]
         except KeyError as e:
             logger.debug("- unsupported format")
             msg = "unknown pixel mode"
             raise SyntaxError(msg) from e
 
-        logger.debug(f"- raw mode: {rawmode}")
-        logger.debug(f"- pil mode: {self.mode}")
+        logger.debug("- raw mode: %s", rawmode)
+        logger.debug("- pil mode: %s", self.mode)
 
         self.info["compression"] = self._compression
 
@@ -1465,11 +1552,11 @@ class TiffImageFile(ImageFile.ImageFile):
             if fillorder == 2:
                 # Replace fillorder with fillorder=1
                 key = key[:3] + (1,) + key[4:]
-                logger.debug(f"format key: {key}")
+                logger.debug("format key: %s", key)
                 # this should always work, since all the
                 # fillorder==2 modes have a corresponding
                 # fillorder=1 mode
-                self.mode, rawmode = OPEN_INFO[key]
+                self._mode, rawmode = OPEN_INFO[key]
             # libtiff always returns the bytes in native order.
             # we're expecting image byte order. So, if the rawmode
             # contains I;16, we need to convert from native to image
@@ -1493,19 +1580,23 @@ class TiffImageFile(ImageFile.ImageFile):
             # Offset in the tile tuple is 0, we go from 0,0 to
             # w,h, and we only do this once -- eds
             a = (rawmode, self._compression, False, self.tag_v2.offset)
-            self.tile.append(("libtiff", (0, 0, xsize, ysize), 0, a))
+            self.tile.append(ImageFile._Tile("libtiff", (0, 0, xsize, ysize), 0, a))
 
         elif STRIPOFFSETS in self.tag_v2 or TILEOFFSETS in self.tag_v2:
             # striped image
             if STRIPOFFSETS in self.tag_v2:
                 offsets = self.tag_v2[STRIPOFFSETS]
                 h = self.tag_v2.get(ROWSPERSTRIP, ysize)
-                w = self.size[0]
+                w = xsize
             else:
                 # tiled image
                 offsets = self.tag_v2[TILEOFFSETS]
-                w = self.tag_v2.get(TILEWIDTH)
+                tilewidth = self.tag_v2.get(TILEWIDTH)
                 h = self.tag_v2.get(TILELENGTH)
+                if not isinstance(tilewidth, int) or not isinstance(h, int):
+                    msg = "Invalid tile dimensions"
+                    raise ValueError(msg)
+                w = tilewidth
 
             for offset in offsets:
                 if x + w > xsize:
@@ -1520,19 +1611,19 @@ class TiffImageFile(ImageFile.ImageFile):
                     # adjust stride width accordingly
                     stride /= bps_count
 
-                a = (tile_rawmode, int(stride), 1)
+                args = (tile_rawmode, int(stride), 1)
                 self.tile.append(
-                    (
+                    ImageFile._Tile(
                         self._compression,
                         (x, y, min(x + w, xsize), min(y + h, ysize)),
                         offset,
-                        a,
+                        args,
                     )
                 )
                 x = x + w
-                if x >= self.size[0]:
+                if x >= xsize:
                     x, y = 0, y + h
-                    if y >= self.size[1]:
+                    if y >= ysize:
                         x = y = 0
                         layer += 1
         else:
@@ -1550,8 +1641,6 @@ class TiffImageFile(ImageFile.ImageFile):
             palette = [o8(b // 256) for b in self.tag_v2[COLORMAP]]
             self.palette = ImagePalette.raw("RGB;L", b"".join(palette))
 
-        self._tile_orientation = self.tag_v2.get(ExifTags.Base.Orientation)
-
 
 #
 # --------------------------------------------------------------------
@@ -1585,7 +1674,7 @@ SAVE_INFO = {
 }
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     try:
         rawmode, prefix, photo, format, bits, extra = SAVE_INFO[im.mode]
     except KeyError as e:
@@ -1630,7 +1719,7 @@ def _save(im, fp, filename):
             info = exif
     else:
         info = {}
-    logger.debug("Tiffinfo Keys: %s" % list(info))
+    logger.debug("Tiffinfo Keys: %s", list(info))
     if isinstance(info, ImageFileDirectory_v1):
         info = info.to_v2()
     for key in info:
@@ -1643,6 +1732,20 @@ def _save(im, fp, filename):
         except Exception:
             pass  # might not be an IFD. Might not have populated type
 
+    legacy_ifd = {}
+    if hasattr(im, "tag"):
+        legacy_ifd = im.tag.to_v2()
+
+    supplied_tags = {**legacy_ifd, **getattr(im, "tag_v2", {})}
+    for tag in (
+        # IFD offset that may not be correct in the saved image
+        EXIFIFD,
+        # Determined by the image format and should not be copied from legacy_ifd.
+        SAMPLEFORMAT,
+    ):
+        if tag in supplied_tags:
+            del supplied_tags[tag]
+
     # additions written by Greg Couch, gregc@cgl.ucsf.edu
     # inspired by image-sig posting from Kevin Cazabon, kcazabon@home.com
     if hasattr(im, "tag_v2"):
@@ -1656,8 +1759,14 @@ def _save(im, fp, filename):
             XMP,
         ):
             if key in im.tag_v2:
-                ifd[key] = im.tag_v2[key]
-                ifd.tagtype[key] = im.tag_v2.tagtype[key]
+                if key == IPTC_NAA_CHUNK and im.tag_v2.tagtype[key] not in (
+                    TiffTags.BYTE,
+                    TiffTags.UNDEFINED,
+                ):
+                    del supplied_tags[key]
+                else:
+                    ifd[key] = im.tag_v2[key]
+                    ifd.tagtype[key] = im.tag_v2.tagtype[key]
 
     # preserve ICC profile (should also work when saving other formats
     # which support profiles as TIFF) -- 2008-06-06 Florian Hoech
@@ -1701,10 +1810,11 @@ def _save(im, fp, filename):
         if im.mode == "1":
             inverted_im = im.copy()
             px = inverted_im.load()
-            for y in range(inverted_im.height):
-                for x in range(inverted_im.width):
-                    px[x, y] = 0 if px[x, y] == 255 else 255
-            im = inverted_im
+            if px is not None:
+                for y in range(inverted_im.height):
+                    for x in range(inverted_im.width):
+                        px[x, y] = 0 if px[x, y] == 255 else 255
+                im = inverted_im
         else:
             im = ImageOps.invert(im)
 
@@ -1717,25 +1827,27 @@ def _save(im, fp, filename):
             colormap += [0] * (256 - colors)
         ifd[COLORMAP] = colormap
     # data orientation
-    stride = len(bits) * ((im.size[0] * bits[0] + 7) // 8)
-    # aim for given strip size (64 KB by default) when using libtiff writer
-    if libtiff:
-        im_strip_size = encoderinfo.get("strip_size", STRIP_SIZE)
-        rows_per_strip = 1 if stride == 0 else min(im_strip_size // stride, im.size[1])
-        # JPEG encoder expects multiple of 8 rows
-        if compression == "jpeg":
-            rows_per_strip = min(((rows_per_strip + 7) // 8) * 8, im.size[1])
-    else:
-        rows_per_strip = im.size[1]
-    if rows_per_strip == 0:
-        rows_per_strip = 1
-    strip_byte_counts = 1 if stride == 0 else stride * rows_per_strip
-    strips_per_image = (im.size[1] + rows_per_strip - 1) // rows_per_strip
-    ifd[ROWSPERSTRIP] = rows_per_strip
+    w, h = ifd[IMAGEWIDTH], ifd[IMAGELENGTH]
+    stride = len(bits) * ((w * bits[0] + 7) // 8)
+    if ROWSPERSTRIP not in ifd:
+        # aim for given strip size (64 KB by default) when using libtiff writer
+        if libtiff:
+            im_strip_size = encoderinfo.get("strip_size", STRIP_SIZE)
+            rows_per_strip = 1 if stride == 0 else min(im_strip_size // stride, h)
+            # JPEG encoder expects multiple of 8 rows
+            if compression == "jpeg":
+                rows_per_strip = min(((rows_per_strip + 7) // 8) * 8, h)
+        else:
+            rows_per_strip = h
+        if rows_per_strip == 0:
+            rows_per_strip = 1
+        ifd[ROWSPERSTRIP] = rows_per_strip
+    strip_byte_counts = 1 if stride == 0 else stride * ifd[ROWSPERSTRIP]
+    strips_per_image = (h + ifd[ROWSPERSTRIP] - 1) // ifd[ROWSPERSTRIP]
     if strip_byte_counts >= 2**16:
         ifd.tagtype[STRIPBYTECOUNTS] = TiffTags.LONG
     ifd[STRIPBYTECOUNTS] = (strip_byte_counts,) * (strips_per_image - 1) + (
-        stride * im.size[1] - strip_byte_counts * (strips_per_image - 1),
+        stride * h - strip_byte_counts * (strips_per_image - 1),
     )
     ifd[STRIPOFFSETS] = tuple(
         range(0, strip_byte_counts * strips_per_image, strip_byte_counts)
@@ -1744,11 +1856,11 @@ def _save(im, fp, filename):
     ifd[COMPRESSION] = COMPRESSION_INFO_REV.get(compression, 1)
 
     if im.mode == "YCbCr":
-        for tag, value in {
+        for tag, default_value in {
             YCBCRSUBSAMPLING: (1, 1),
             REFERENCEBLACKWHITE: (0, 255, 128, 255, 128, 255),
         }.items():
-            ifd.setdefault(tag, value)
+            ifd.setdefault(tag, default_value)
 
     blocklist = [TILEWIDTH, TILELENGTH, TILEOFFSETS, TILEBYTECOUNTS]
     if libtiff:
@@ -1763,12 +1875,12 @@ def _save(im, fp, filename):
             ifd[JPEGQUALITY] = quality
 
         logger.debug("Saving using libtiff encoder")
-        logger.debug("Items: %s" % sorted(ifd.items()))
+        logger.debug("Items: %s", sorted(ifd.items()))
         _fp = 0
         if hasattr(fp, "fileno"):
             try:
                 fp.seek(0)
-                _fp = os.dup(fp.fileno())
+                _fp = fp.fileno()
             except io.UnsupportedOperation:
                 pass
 
@@ -1776,11 +1888,13 @@ def _save(im, fp, filename):
         types = {}
         # STRIPOFFSETS and STRIPBYTECOUNTS are added by the library
         # based on the data in the strip.
+        # OSUBFILETYPE is deprecated.
         # The other tags expect arrays with a certain length (fixed or depending on
         # BITSPERSAMPLE, etc), passing arrays with a different length will result in
         # segfaults. Block these tags until we add extra validation.
         # SUBIFD may also cause a segfault.
         blocklist += [
+            OSUBFILETYPE,
             REFERENCEBLACKWHITE,
             STRIPBYTECOUNTS,
             STRIPOFFSETS,
@@ -1789,20 +1903,10 @@ def _save(im, fp, filename):
         ]
 
         # bits per sample is a single short in the tiff directory, not a list.
-        atts = {BITSPERSAMPLE: bits[0]}
+        atts: dict[int, Any] = {BITSPERSAMPLE: bits[0]}
         # Merge the ones that we have with (optional) more bits from
         # the original file, e.g x,y resolution so that we can
         # save(load('')) == original file.
-        legacy_ifd = {}
-        if hasattr(im, "tag"):
-            legacy_ifd = im.tag.to_v2()
-
-        # SAMPLEFORMAT is determined by the image format and should not be copied
-        # from legacy_ifd.
-        supplied_tags = {**getattr(im, "tag_v2", {}), **legacy_ifd}
-        if SAMPLEFORMAT in supplied_tags:
-            del supplied_tags[SAMPLEFORMAT]
-
         for tag, value in itertools.chain(ifd.items(), supplied_tags.items()):
             # Libtiff can only process certain core items without adding
             # them to the custom dictionary.
@@ -1831,7 +1935,7 @@ def _save(im, fp, filename):
         if SAMPLEFORMAT in atts and len(atts[SAMPLEFORMAT]) == 1:
             atts[SAMPLEFORMAT] = atts[SAMPLEFORMAT][0]
 
-        logger.debug("Converted items: %s" % sorted(atts.items()))
+        logger.debug("Converted items: %s", sorted(atts.items()))
 
         # libtiff always expects the bytes in native order.
         # we're storing image byte order. So, if the rawmode
@@ -1846,20 +1950,14 @@ def _save(im, fp, filename):
         tags = list(atts.items())
         tags.sort()
         a = (rawmode, compression, _fp, filename, tags, types)
-        e = Image._getencoder(im.mode, "libtiff", a, encoderconfig)
-        e.setimage(im.im, (0, 0) + im.size)
+        encoder = Image._getencoder(im.mode, "libtiff", a, encoderconfig)
+        encoder.setimage(im.im, (0, 0) + im.size)
         while True:
-            # undone, change to self.decodermaxblock:
-            errcode, data = e.encode(16 * 1024)[1:]
+            errcode, data = encoder.encode(ImageFile.MAXBLOCK)[1:]
             if not _fp:
                 fp.write(data)
             if errcode:
                 break
-        if _fp:
-            try:
-                os.close(_fp)
-            except OSError:
-                pass
         if errcode < 0:
             msg = f"encoder error {errcode} when writing image file"
             raise OSError(msg)
@@ -1870,16 +1968,18 @@ def _save(im, fp, filename):
         offset = ifd.save(fp)
 
         ImageFile._save(
-            im, fp, [("raw", (0, 0) + im.size, offset, (rawmode, stride, 1))]
+            im,
+            fp,
+            [ImageFile._Tile("raw", (0, 0) + im.size, offset, (rawmode, stride, 1))],
         )
 
     # -- helper for multi-page save --
     if "_debug_multipage" in encoderinfo:
         # just to access o32 and o16 (using correct byte order)
-        im._debug_multipage = ifd
+        setattr(im, "_debug_multipage", ifd)
 
 
-class AppendingTiffWriter:
+class AppendingTiffWriter(io.BytesIO):
     fieldSizes = [
         0,  # None
         1,  # byte
@@ -1900,33 +2000,35 @@ class AppendingTiffWriter:
         8,  # long8
     ]
 
-    #    StripOffsets = 273
-    #    FreeOffsets = 288
-    #    TileOffsets = 324
-    #    JPEGQTables = 519
-    #    JPEGDCTables = 520
-    #    JPEGACTables = 521
-    Tags = {273, 288, 324, 519, 520, 521}
+    Tags = {
+        273,  # StripOffsets
+        288,  # FreeOffsets
+        324,  # TileOffsets
+        519,  # JPEGQTables
+        520,  # JPEGDCTables
+        521,  # JPEGACTables
+    }
 
-    def __init__(self, fn, new=False):
-        if hasattr(fn, "read"):
-            self.f = fn
-            self.close_fp = False
-        else:
+    def __init__(self, fn: StrOrBytesPath | IO[bytes], new: bool = False) -> None:
+        self.f: IO[bytes]
+        if is_path(fn):
             self.name = fn
             self.close_fp = True
             try:
                 self.f = open(fn, "w+b" if new else "r+b")
             except OSError:
                 self.f = open(fn, "w+b")
+        else:
+            self.f = cast(IO[bytes], fn)
+            self.close_fp = False
         self.beginning = self.f.tell()
         self.setup()
 
-    def setup(self):
+    def setup(self) -> None:
         # Reset everything.
         self.f.seek(self.beginning, os.SEEK_SET)
 
-        self.whereToWriteNewIFDOffset = None
+        self.whereToWriteNewIFDOffset: int | None = None
         self.offsetOfNewPage = 0
 
         self.IIMM = iimm = self.f.read(4)
@@ -1947,7 +2049,7 @@ class AppendingTiffWriter:
         self.skipIFDs()
         self.goToEnd()
 
-    def finalize(self):
+    def finalize(self) -> None:
         if self.isFirst:
             return
 
@@ -1956,8 +2058,6 @@ class AppendingTiffWriter:
 
         iimm = self.f.read(4)
         if not iimm:
-            # msg = "nothing written into new page"
-            # raise RuntimeError(msg)
             # Make it easy to finish a frame without committing to a new one.
             return
 
@@ -1967,35 +2067,41 @@ class AppendingTiffWriter:
 
         ifd_offset = self.readLong()
         ifd_offset += self.offsetOfNewPage
+        assert self.whereToWriteNewIFDOffset is not None
         self.f.seek(self.whereToWriteNewIFDOffset)
         self.writeLong(ifd_offset)
         self.f.seek(ifd_offset)
         self.fixIFD()
 
-    def newFrame(self):
+    def newFrame(self) -> None:
         # Call this to finish a frame.
         self.finalize()
         self.setup()
 
-    def __enter__(self):
+    def __enter__(self) -> AppendingTiffWriter:
         return self
 
-    def __exit__(self, exc_type, exc_value, traceback):
+    def __exit__(self, *args: object) -> None:
         if self.close_fp:
             self.close()
-        return False
 
-    def tell(self):
+    def tell(self) -> int:
         return self.f.tell() - self.offsetOfNewPage
 
-    def seek(self, offset, whence=io.SEEK_SET):
+    def seek(self, offset: int, whence: int = io.SEEK_SET) -> int:
+        """
+        :param offset: Distance to seek.
+        :param whence: Whether the distance is relative to the start,
+                       end or current position.
+        :returns: The resulting position, relative to the start.
+        """
         if whence == os.SEEK_SET:
             offset += self.offsetOfNewPage
 
         self.f.seek(offset, whence)
         return self.tell()
 
-    def goToEnd(self):
+    def goToEnd(self) -> None:
         self.f.seek(0, os.SEEK_END)
         pos = self.f.tell()
 
@@ -2005,13 +2111,13 @@ class AppendingTiffWriter:
             self.f.write(bytes(pad_bytes))
         self.offsetOfNewPage = self.f.tell()
 
-    def setEndian(self, endian):
+    def setEndian(self, endian: str) -> None:
         self.endian = endian
-        self.longFmt = self.endian + "L"
-        self.shortFmt = self.endian + "H"
-        self.tagFormat = self.endian + "HHL"
+        self.longFmt = f"{self.endian}L"
+        self.shortFmt = f"{self.endian}H"
+        self.tagFormat = f"{self.endian}HHL"
 
-    def skipIFDs(self):
+    def skipIFDs(self) -> None:
         while True:
             ifd_offset = self.readLong()
             if ifd_offset == 0:
@@ -2022,55 +2128,66 @@ class AppendingTiffWriter:
             num_tags = self.readShort()
             self.f.seek(num_tags * 12, os.SEEK_CUR)
 
-    def write(self, data):
+    def write(self, data: Buffer, /) -> int:
         return self.f.write(data)
 
-    def readShort(self):
-        (value,) = struct.unpack(self.shortFmt, self.f.read(2))
+    def _fmt(self, field_size: int) -> str:
+        try:
+            return {2: "H", 4: "L", 8: "Q"}[field_size]
+        except KeyError:
+            msg = "offset is not supported"
+            raise RuntimeError(msg)
+
+    def _read(self, field_size: int) -> int:
+        (value,) = struct.unpack(
+            self.endian + self._fmt(field_size), self.f.read(field_size)
+        )
         return value
 
-    def readLong(self):
-        (value,) = struct.unpack(self.longFmt, self.f.read(4))
-        return value
+    def readShort(self) -> int:
+        return self._read(2)
 
-    def rewriteLastShortToLong(self, value):
+    def readLong(self) -> int:
+        return self._read(4)
+
+    @staticmethod
+    def _verify_bytes_written(bytes_written: int | None, expected: int) -> None:
+        if bytes_written is not None and bytes_written != expected:
+            msg = f"wrote only {bytes_written} bytes but wanted {expected}"
+            raise RuntimeError(msg)
+
+    def rewriteLastShortToLong(self, value: int) -> None:
         self.f.seek(-2, os.SEEK_CUR)
         bytes_written = self.f.write(struct.pack(self.longFmt, value))
-        if bytes_written is not None and bytes_written != 4:
-            msg = f"wrote only {bytes_written} bytes but wanted 4"
-            raise RuntimeError(msg)
+        self._verify_bytes_written(bytes_written, 4)
 
-    def rewriteLastShort(self, value):
-        self.f.seek(-2, os.SEEK_CUR)
+    def _rewriteLast(self, value: int, field_size: int) -> None:
+        self.f.seek(-field_size, os.SEEK_CUR)
+        bytes_written = self.f.write(
+            struct.pack(self.endian + self._fmt(field_size), value)
+        )
+        self._verify_bytes_written(bytes_written, field_size)
+
+    def rewriteLastShort(self, value: int) -> None:
+        return self._rewriteLast(value, 2)
+
+    def rewriteLastLong(self, value: int) -> None:
+        return self._rewriteLast(value, 4)
+
+    def writeShort(self, value: int) -> None:
         bytes_written = self.f.write(struct.pack(self.shortFmt, value))
-        if bytes_written is not None and bytes_written != 2:
-            msg = f"wrote only {bytes_written} bytes but wanted 2"
-            raise RuntimeError(msg)
+        self._verify_bytes_written(bytes_written, 2)
 
-    def rewriteLastLong(self, value):
-        self.f.seek(-4, os.SEEK_CUR)
+    def writeLong(self, value: int) -> None:
         bytes_written = self.f.write(struct.pack(self.longFmt, value))
-        if bytes_written is not None and bytes_written != 4:
-            msg = f"wrote only {bytes_written} bytes but wanted 4"
-            raise RuntimeError(msg)
+        self._verify_bytes_written(bytes_written, 4)
 
-    def writeShort(self, value):
-        bytes_written = self.f.write(struct.pack(self.shortFmt, value))
-        if bytes_written is not None and bytes_written != 2:
-            msg = f"wrote only {bytes_written} bytes but wanted 2"
-            raise RuntimeError(msg)
-
-    def writeLong(self, value):
-        bytes_written = self.f.write(struct.pack(self.longFmt, value))
-        if bytes_written is not None and bytes_written != 4:
-            msg = f"wrote only {bytes_written} bytes but wanted 4"
-            raise RuntimeError(msg)
-
-    def close(self):
+    def close(self) -> None:
         self.finalize()
-        self.f.close()
+        if self.close_fp:
+            self.f.close()
 
-    def fixIFD(self):
+    def fixIFD(self) -> None:
         num_tags = self.readShort()
 
         for i in range(num_tags):
@@ -2080,40 +2197,29 @@ class AppendingTiffWriter:
             total_size = field_size * count
             is_local = total_size <= 4
             if not is_local:
-                offset = self.readLong()
-                offset += self.offsetOfNewPage
+                offset = self.readLong() + self.offsetOfNewPage
                 self.rewriteLastLong(offset)
 
             if tag in self.Tags:
                 cur_pos = self.f.tell()
 
                 if is_local:
-                    self.fixOffsets(
-                        count, isShort=(field_size == 2), isLong=(field_size == 4)
-                    )
+                    self._fixOffsets(count, field_size)
                     self.f.seek(cur_pos + 4)
                 else:
                     self.f.seek(offset)
-                    self.fixOffsets(
-                        count, isShort=(field_size == 2), isLong=(field_size == 4)
-                    )
+                    self._fixOffsets(count, field_size)
                     self.f.seek(cur_pos)
 
-                offset = cur_pos = None
-
             elif is_local:
                 # skip the locally stored value that is not an offset
                 self.f.seek(4, os.SEEK_CUR)
 
-    def fixOffsets(self, count, isShort=False, isLong=False):
-        if not isShort and not isLong:
-            msg = "offset is neither short nor long"
-            raise RuntimeError(msg)
-
+    def _fixOffsets(self, count: int, field_size: int) -> None:
         for i in range(count):
-            offset = self.readShort() if isShort else self.readLong()
+            offset = self._read(field_size)
             offset += self.offsetOfNewPage
-            if isShort and offset >= 65536:
+            if field_size == 2 and offset >= 65536:
                 # offset is now too large - we must convert shorts to longs
                 if count != 1:
                     msg = "not implemented"
@@ -2125,13 +2231,22 @@ class AppendingTiffWriter:
                 self.f.seek(-10, os.SEEK_CUR)
                 self.writeShort(TiffTags.LONG)  # rewrite the type to LONG
                 self.f.seek(8, os.SEEK_CUR)
-            elif isShort:
-                self.rewriteLastShort(offset)
             else:
-                self.rewriteLastLong(offset)
+                self._rewriteLast(offset, field_size)
+
+    def fixOffsets(
+        self, count: int, isShort: bool = False, isLong: bool = False
+    ) -> None:
+        if isShort:
+            field_size = 2
+        elif isLong:
+            field_size = 4
+        else:
+            field_size = 0
+        return self._fixOffsets(count, field_size)
 
 
-def _save_all(im, fp, filename):
+def _save_all(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     encoderinfo = im.encoderinfo.copy()
     encoderconfig = im.encoderconfig
     append_images = list(encoderinfo.get("append_images", []))
diff --git a/src/PIL/TiffTags.py b/src/PIL/TiffTags.py
index 30b05e4e1..86adaa458 100644
--- a/src/PIL/TiffTags.py
+++ b/src/PIL/TiffTags.py
@@ -16,24 +16,40 @@
 # This module provides constants and clear-text names for various
 # well-known TIFF tags.
 ##
+from __future__ import annotations
 
-from collections import namedtuple
+from typing import NamedTuple
 
 
-class TagInfo(namedtuple("_TagInfo", "value name type length enum")):
-    __slots__ = []
+class _TagInfo(NamedTuple):
+    value: int | None
+    name: str
+    type: int | None
+    length: int | None
+    enum: dict[str, int]
 
-    def __new__(cls, value=None, name="unknown", type=None, length=None, enum=None):
+
+class TagInfo(_TagInfo):
+    __slots__: list[str] = []
+
+    def __new__(
+        cls,
+        value: int | None = None,
+        name: str = "unknown",
+        type: int | None = None,
+        length: int | None = None,
+        enum: dict[str, int] | None = None,
+    ) -> TagInfo:
         return super().__new__(cls, value, name, type, length, enum or {})
 
-    def cvt_enum(self, value):
+    def cvt_enum(self, value: str) -> int | str:
         # Using get will call hash(value), which can be expensive
         # for some types (e.g. Fraction). Since self.enum is rarely
         # used, it's usually better to test it first.
         return self.enum.get(value, value) if self.enum else value
 
 
-def lookup(tag, group=None):
+def lookup(tag: int, group: int | None = None) -> TagInfo:
     """
     :param tag: Integer tag number
     :param group: Which :py:data:`~PIL.TiffTags.TAGS_V2_GROUPS` to look in
@@ -56,7 +72,7 @@ def lookup(tag, group=None):
 ##
 # Map tag numbers to tag info.
 #
-#  id: (Name, Type, Length, enum_values)
+#  id: (Name, Type, Length[, enum_values])
 #
 # The length here differs from the length in the tiff spec.  For
 # numbers, the tiff spec is for the number of fields returned. We
@@ -80,7 +96,7 @@ DOUBLE = 12
 IFD = 13
 LONG8 = 16
 
-TAGS_V2 = {
+_tags_v2: dict[int, tuple[str, int, int] | tuple[str, int, int, dict[str, int]]] = {
     254: ("NewSubfileType", LONG, 1),
     255: ("SubfileType", SHORT, 1),
     256: ("ImageWidth", LONG, 1),
@@ -224,7 +240,7 @@ TAGS_V2 = {
     50838: ("ImageJMetaDataByteCounts", LONG, 0),  # Can be more than one
     50839: ("ImageJMetaData", UNDEFINED, 1),  # see Issue #2006
 }
-TAGS_V2_GROUPS = {
+_tags_v2_groups = {
     # ExifIFD
     34665: {
         36864: ("ExifVersion", UNDEFINED, 1),
@@ -272,7 +288,7 @@ TAGS_V2_GROUPS = {
 
 # Legacy Tags structure
 # these tags aren't included above, but were in the previous versions
-TAGS = {
+TAGS: dict[int | tuple[int, int], str] = {
     347: "JPEGTables",
     700: "XMP",
     # Additional Exif Info
@@ -416,9 +432,12 @@ TAGS = {
     50784: "Alias Layer Metadata",
 }
 
+TAGS_V2: dict[int, TagInfo] = {}
+TAGS_V2_GROUPS: dict[int, dict[int, TagInfo]] = {}
 
-def _populate():
-    for k, v in TAGS_V2.items():
+
+def _populate() -> None:
+    for k, v in _tags_v2.items():
         # Populate legacy structure.
         TAGS[k] = v[0]
         if len(v) == 4:
@@ -427,32 +446,15 @@ def _populate():
 
         TAGS_V2[k] = TagInfo(k, *v)
 
-    for group, tags in TAGS_V2_GROUPS.items():
-        for k, v in tags.items():
-            tags[k] = TagInfo(k, *v)
+    for group, tags in _tags_v2_groups.items():
+        TAGS_V2_GROUPS[group] = {k: TagInfo(k, *v) for k, v in tags.items()}
 
 
 _populate()
 ##
 # Map type numbers to type names -- defined in ImageFileDirectory.
 
-TYPES = {}
-
-# was:
-# TYPES = {
-#     1: "byte",
-#     2: "ascii",
-#     3: "short",
-#     4: "long",
-#     5: "rational",
-#     6: "signed byte",
-#     7: "undefined",
-#     8: "signed short",
-#     9: "signed long",
-#     10: "signed rational",
-#     11: "float",
-#     12: "double",
-# }
+TYPES: dict[int, str] = {}
 
 #
 # These tags are handled by default in libtiff, without
diff --git a/src/PIL/WalImageFile.py b/src/PIL/WalImageFile.py
index e4f47aa04..87e32878b 100644
--- a/src/PIL/WalImageFile.py
+++ b/src/PIL/WalImageFile.py
@@ -22,17 +22,21 @@ and has been tested with a few sample files found using google.
     is not registered for use with :py:func:`PIL.Image.open()`.
     To open a WAL file, use the :py:func:`PIL.WalImageFile.open()` function instead.
 """
+from __future__ import annotations
+
+from typing import IO
 
 from . import Image, ImageFile
 from ._binary import i32le as i32
+from ._typing import StrOrBytesPath
 
 
 class WalImageFile(ImageFile.ImageFile):
     format = "WAL"
     format_description = "Quake2 Texture"
 
-    def _open(self):
-        self.mode = "P"
+    def _open(self) -> None:
+        self._mode = "P"
 
         # read header fields
         header = self.fp.read(32 + 24 + 32 + 12)
@@ -49,15 +53,15 @@ class WalImageFile(ImageFile.ImageFile):
         if next_name:
             self.info["next_name"] = next_name
 
-    def load(self):
-        if not self.im:
+    def load(self) -> Image.core.PixelAccess | None:
+        if self._im is None:
             self.im = Image.core.new(self.mode, self.size)
             self.frombytes(self.fp.read(self.size[0] * self.size[1]))
             self.putpalette(quake2palette)
         return Image.Image.load(self)
 
 
-def open(filename):
+def open(filename: StrOrBytesPath | IO[bytes]) -> WalImageFile:
     """
     Load texture from a Quake2 WAL texture file.
 
diff --git a/src/PIL/WebPImagePlugin.py b/src/PIL/WebPImagePlugin.py
index ce8e05fcb..c7f855527 100644
--- a/src/PIL/WebPImagePlugin.py
+++ b/src/PIL/WebPImagePlugin.py
@@ -1,4 +1,7 @@
+from __future__ import annotations
+
 from io import BytesIO
+from typing import IO, Any
 
 from . import Image, ImageFile
 
@@ -10,10 +13,6 @@ except ImportError:
     SUPPORTED = False
 
 
-_VALID_WEBP_MODES = {"RGBX": True, "RGBA": True, "RGB": True}
-
-_VALID_WEBP_LEGACY_MODES = {"RGB": True, "RGBA": True}
-
 _VP8_MODES_BY_IDENTIFIER = {
     b"VP8 ": "RGB",
     b"VP8X": "RGBA",
@@ -21,7 +20,7 @@ _VP8_MODES_BY_IDENTIFIER = {
 }
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool | str:
     is_riff_file_format = prefix[:4] == b"RIFF"
     is_webp_file = prefix[8:12] == b"WEBP"
     is_valid_vp8_mode = prefix[12:16] in _VP8_MODES_BY_IDENTIFIER
@@ -32,6 +31,7 @@ def _accept(prefix):
                 "image file could not be identified because WEBP support not installed"
             )
         return True
+    return False
 
 
 class WebPImageFile(ImageFile.ImageFile):
@@ -40,23 +40,7 @@ class WebPImageFile(ImageFile.ImageFile):
     __loaded = 0
     __logical_frame = 0
 
-    def _open(self):
-        if not _webp.HAVE_WEBPANIM:
-            # Legacy mode
-            data, width, height, self.mode, icc_profile, exif = _webp.WebPDecode(
-                self.fp.read()
-            )
-            if icc_profile:
-                self.info["icc_profile"] = icc_profile
-            if exif:
-                self.info["exif"] = exif
-            self._size = width, height
-            self.fp = BytesIO(data)
-            self.tile = [("raw", (0, 0) + self.size, 0, self.mode)]
-            self.n_frames = 1
-            self.is_animated = False
-            return
-
+    def _open(self) -> None:
         # Use the newer AnimDecoder API to parse the (possibly) animated file,
         # and access muxed chunks like ICC/EXIF/XMP.
         self._decoder = _webp.WebPAnimDecoder(self.fp.read())
@@ -74,9 +58,8 @@ class WebPImageFile(ImageFile.ImageFile):
         self.info["background"] = (bg_r, bg_g, bg_b, bg_a)
         self.n_frames = frame_count
         self.is_animated = self.n_frames > 1
-        self.mode = "RGB" if mode == "RGBX" else mode
+        self._mode = "RGB" if mode == "RGBX" else mode
         self.rawmode = mode
-        self.tile = []
 
         # Attempt to read ICC / EXIF / XMP chunks from file
         icc_profile = self._decoder.get_chunk("ICCP")
@@ -92,35 +75,26 @@ class WebPImageFile(ImageFile.ImageFile):
         # Initialize seek state
         self._reset(reset=False)
 
-    def _getexif(self):
+    def _getexif(self) -> dict[int, Any] | None:
         if "exif" not in self.info:
             return None
         return self.getexif()._get_merged_dict()
 
-    def getxmp(self):
-        """
-        Returns a dictionary containing the XMP tags.
-        Requires defusedxml to be installed.
-
-        :returns: XMP tags in a dictionary.
-        """
-        return self._getxmp(self.info["xmp"]) if "xmp" in self.info else {}
-
-    def seek(self, frame):
+    def seek(self, frame: int) -> None:
         if not self._seek_check(frame):
             return
 
         # Set logical frame to requested position
         self.__logical_frame = frame
 
-    def _reset(self, reset=True):
+    def _reset(self, reset: bool = True) -> None:
         if reset:
             self._decoder.reset()
         self.__physical_frame = 0
         self.__loaded = -1
         self.__timestamp = 0
 
-    def _get_next(self):
+    def _get_next(self) -> tuple[bytes, int, int]:
         # Get next frame
         ret = self._decoder.get_next()
         self.__physical_frame += 1
@@ -141,7 +115,7 @@ class WebPImageFile(ImageFile.ImageFile):
         timestamp -= duration
         return data, timestamp, duration
 
-    def _seek(self, frame):
+    def _seek(self, frame: int) -> None:
         if self.__physical_frame == frame:
             return  # Nothing to do
         if frame < self.__physical_frame:
@@ -149,33 +123,39 @@ class WebPImageFile(ImageFile.ImageFile):
         while self.__physical_frame < frame:
             self._get_next()  # Advance to the requested frame
 
-    def load(self):
-        if _webp.HAVE_WEBPANIM:
-            if self.__loaded != self.__logical_frame:
-                self._seek(self.__logical_frame)
+    def load(self) -> Image.core.PixelAccess | None:
+        if self.__loaded != self.__logical_frame:
+            self._seek(self.__logical_frame)
 
-                # We need to load the image data for this frame
-                data, timestamp, duration = self._get_next()
-                self.info["timestamp"] = timestamp
-                self.info["duration"] = duration
-                self.__loaded = self.__logical_frame
+            # We need to load the image data for this frame
+            data, timestamp, duration = self._get_next()
+            self.info["timestamp"] = timestamp
+            self.info["duration"] = duration
+            self.__loaded = self.__logical_frame
 
-                # Set tile
-                if self.fp and self._exclusive_fp:
-                    self.fp.close()
-                self.fp = BytesIO(data)
-                self.tile = [("raw", (0, 0) + self.size, 0, self.rawmode)]
+            # Set tile
+            if self.fp and self._exclusive_fp:
+                self.fp.close()
+            self.fp = BytesIO(data)
+            self.tile = [ImageFile._Tile("raw", (0, 0) + self.size, 0, self.rawmode)]
 
         return super().load()
 
-    def tell(self):
-        if not _webp.HAVE_WEBPANIM:
-            return super().tell()
+    def load_seek(self, pos: int) -> None:
+        pass
 
+    def tell(self) -> int:
         return self.__logical_frame
 
 
-def _save_all(im, fp, filename):
+def _convert_frame(im: Image.Image) -> Image.Image:
+    # Make sure image mode is supported
+    if im.mode not in ("RGBX", "RGBA", "RGB"):
+        im = im.convert("RGBA" if im.has_transparency_data else "RGB")
+    return im
+
+
+def _save_all(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     encoderinfo = im.encoderinfo.copy()
     append_images = list(encoderinfo.get("append_images", []))
 
@@ -188,7 +168,7 @@ def _save_all(im, fp, filename):
         _save(im, fp, filename)
         return
 
-    background = (0, 0, 0, 0)
+    background: int | tuple[int, ...] = (0, 0, 0, 0)
     if "background" in encoderinfo:
         background = encoderinfo["background"]
     elif "background" in im.info:
@@ -212,6 +192,7 @@ def _save_all(im, fp, filename):
     verbose = False
     lossless = im.encoderinfo.get("lossless", False)
     quality = im.encoderinfo.get("quality", 80)
+    alpha_quality = im.encoderinfo.get("alpha_quality", 100)
     method = im.encoderinfo.get("method", 0)
     icc_profile = im.encoderinfo.get("icc_profile") or ""
     exif = im.encoderinfo.get("exif", "")
@@ -264,33 +245,16 @@ def _save_all(im, fp, filename):
 
             for idx in range(nfr):
                 ims.seek(idx)
-                ims.load()
 
-                # Make sure image mode is supported
-                frame = ims
-                rawmode = ims.mode
-                if ims.mode not in _VALID_WEBP_MODES:
-                    alpha = (
-                        "A" in ims.mode
-                        or "a" in ims.mode
-                        or (ims.mode == "P" and "A" in ims.im.getpalettemode())
-                    )
-                    rawmode = "RGBA" if alpha else "RGB"
-                    frame = ims.convert(rawmode)
-
-                if rawmode == "RGB":
-                    # For faster conversion, use RGBX
-                    rawmode = "RGBX"
+                frame = _convert_frame(ims)
 
                 # Append the frame to the animation encoder
                 enc.add(
-                    frame.tobytes("raw", rawmode),
+                    frame.getim(),
                     round(timestamp),
-                    frame.size[0],
-                    frame.size[1],
-                    rawmode,
                     lossless,
                     quality,
+                    alpha_quality,
                     method,
                 )
 
@@ -305,7 +269,7 @@ def _save_all(im, fp, filename):
         im.seek(cur_idx)
 
     # Force encoder to flush frames
-    enc.add(None, round(timestamp), 0, 0, "", lossless, quality, 0)
+    enc.add(None, round(timestamp), lossless, quality, alpha_quality, 0)
 
     # Get the final output from the encoder
     data = enc.assemble(icc_profile, exif, xmp)
@@ -316,9 +280,10 @@ def _save_all(im, fp, filename):
     fp.write(data)
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     lossless = im.encoderinfo.get("lossless", False)
     quality = im.encoderinfo.get("quality", 80)
+    alpha_quality = im.encoderinfo.get("alpha_quality", 100)
     icc_profile = im.encoderinfo.get("icc_profile") or ""
     exif = im.encoderinfo.get("exif", b"")
     if isinstance(exif, Image.Exif):
@@ -329,21 +294,13 @@ def _save(im, fp, filename):
     method = im.encoderinfo.get("method", 4)
     exact = 1 if im.encoderinfo.get("exact") else 0
 
-    if im.mode not in _VALID_WEBP_LEGACY_MODES:
-        alpha = (
-            "A" in im.mode
-            or "a" in im.mode
-            or (im.mode == "P" and "transparency" in im.info)
-        )
-        im = im.convert("RGBA" if alpha else "RGB")
+    im = _convert_frame(im)
 
     data = _webp.WebPEncode(
-        im.tobytes(),
-        im.size[0],
-        im.size[1],
+        im.getim(),
         lossless,
         float(quality),
-        im.mode,
+        float(alpha_quality),
         icc_profile,
         method,
         exact,
@@ -360,7 +317,6 @@ def _save(im, fp, filename):
 Image.register_open(WebPImageFile.format, WebPImageFile, _accept)
 if SUPPORTED:
     Image.register_save(WebPImageFile.format, _save)
-    if _webp.HAVE_WEBPANIM:
-        Image.register_save_all(WebPImageFile.format, _save_all)
+    Image.register_save_all(WebPImageFile.format, _save_all)
     Image.register_extension(WebPImageFile.format, ".webp")
     Image.register_mime(WebPImageFile.format, "image/webp")
diff --git a/src/PIL/WmfImagePlugin.py b/src/PIL/WmfImagePlugin.py
index 0ecab56a8..cad6c98d5 100644
--- a/src/PIL/WmfImagePlugin.py
+++ b/src/PIL/WmfImagePlugin.py
@@ -18,6 +18,9 @@
 # https://winprotocoldoc.blob.core.windows.net/productionwindowsarchives/MS-WMF/[MS-WMF].pdf
 # http://wvware.sourceforge.net/caolan/index.html
 # http://wvware.sourceforge.net/caolan/ora-wmf.html
+from __future__ import annotations
+
+from typing import IO
 
 from . import Image, ImageFile
 from ._binary import i16le as word
@@ -27,7 +30,7 @@ from ._binary import si32le as _long
 _handler = None
 
 
-def register_handler(handler):
+def register_handler(handler: ImageFile.StubHandler | None) -> None:
     """
     Install application-specific WMF image handler.
 
@@ -40,12 +43,12 @@ def register_handler(handler):
 if hasattr(Image.core, "drawwmf"):
     # install default handler (windows only)
 
-    class WmfHandler:
-        def open(self, im):
-            im.mode = "RGB"
+    class WmfHandler(ImageFile.StubHandler):
+        def open(self, im: ImageFile.StubImageFile) -> None:
+            im._mode = "RGB"
             self.bbox = im.info["wmf_bbox"]
 
-        def load(self, im):
+        def load(self, im: ImageFile.StubImageFile) -> Image.Image:
             im.fp.seek(0)  # rewind
             return Image.frombytes(
                 "RGB",
@@ -64,7 +67,7 @@ if hasattr(Image.core, "drawwmf"):
 # Read WMF file
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return (
         prefix[:6] == b"\xd7\xcd\xc6\x9a\x00\x00" or prefix[:4] == b"\x01\x00\x00\x00"
     )
@@ -78,7 +81,7 @@ class WmfStubImageFile(ImageFile.StubImageFile):
     format = "WMF"
     format_description = "Windows Metafile"
 
-    def _open(self):
+    def _open(self) -> None:
         self._inch = None
 
         # check placable header
@@ -125,7 +128,7 @@ class WmfStubImageFile(ImageFile.StubImageFile):
             size = x1 - x0, y1 - y0
 
             # calculate dots per inch from bbox and frame
-            xdpi = 2540.0 * (x1 - y0) / (frame[2] - frame[0])
+            xdpi = 2540.0 * (x1 - x0) / (frame[2] - frame[0])
             ydpi = 2540.0 * (y1 - y0) / (frame[3] - frame[1])
 
             self.info["wmf_bbox"] = x0, y0, x1, y1
@@ -139,17 +142,17 @@ class WmfStubImageFile(ImageFile.StubImageFile):
             msg = "Unsupported file format"
             raise SyntaxError(msg)
 
-        self.mode = "RGB"
+        self._mode = "RGB"
         self._size = size
 
         loader = self._load()
         if loader:
             loader.open(self)
 
-    def _load(self):
+    def _load(self) -> ImageFile.StubHandler | None:
         return _handler
 
-    def load(self, dpi=None):
+    def load(self, dpi: int | None = None) -> Image.core.PixelAccess | None:
         if dpi is not None and self._inch is not None:
             self.info["dpi"] = dpi
             x0, y0, x1, y1 = self.info["wmf_bbox"]
@@ -160,7 +163,7 @@ class WmfStubImageFile(ImageFile.StubImageFile):
         return super().load()
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if _handler is None or not hasattr(_handler, "save"):
         msg = "WMF save handler not installed"
         raise OSError(msg)
diff --git a/src/PIL/XVThumbImagePlugin.py b/src/PIL/XVThumbImagePlugin.py
index aa4a01f4e..5d1f201a4 100644
--- a/src/PIL/XVThumbImagePlugin.py
+++ b/src/PIL/XVThumbImagePlugin.py
@@ -16,6 +16,7 @@
 # To do:
 # FIXME: make save work (this requires quantization support)
 #
+from __future__ import annotations
 
 from . import Image, ImageFile, ImagePalette
 from ._binary import o8
@@ -32,7 +33,7 @@ for r in range(8):
             )
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:6] == _MAGIC
 
 
@@ -44,8 +45,10 @@ class XVThumbImageFile(ImageFile.ImageFile):
     format = "XVThumb"
     format_description = "XV thumbnail image"
 
-    def _open(self):
+    def _open(self) -> None:
         # check magic
+        assert self.fp is not None
+
         if not _accept(self.fp.read(6)):
             msg = "not an XV thumbnail file"
             raise SyntaxError(msg)
@@ -65,12 +68,16 @@ class XVThumbImageFile(ImageFile.ImageFile):
         # parse header line (already read)
         s = s.strip().split()
 
-        self.mode = "P"
+        self._mode = "P"
         self._size = int(s[0]), int(s[1])
 
         self.palette = ImagePalette.raw("RGB", PALETTE)
 
-        self.tile = [("raw", (0, 0) + self.size, self.fp.tell(), (self.mode, 0, 1))]
+        self.tile = [
+            ImageFile._Tile(
+                "raw", (0, 0) + self.size, self.fp.tell(), (self.mode, 0, 1)
+            )
+        ]
 
 
 # --------------------------------------------------------------------
diff --git a/src/PIL/XbmImagePlugin.py b/src/PIL/XbmImagePlugin.py
index 3c12564c9..f3d490a84 100644
--- a/src/PIL/XbmImagePlugin.py
+++ b/src/PIL/XbmImagePlugin.py
@@ -18,8 +18,10 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import re
+from typing import IO
 
 from . import Image, ImageFile
 
@@ -35,7 +37,7 @@ xbm_head = re.compile(
 )
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix.lstrip()[:7] == b"#define"
 
 
@@ -47,7 +49,9 @@ class XbmImageFile(ImageFile.ImageFile):
     format = "XBM"
     format_description = "X11 Bitmap"
 
-    def _open(self):
+    def _open(self) -> None:
+        assert self.fp is not None
+
         m = xbm_head.match(self.fp.read(512))
 
         if not m:
@@ -60,13 +64,13 @@ class XbmImageFile(ImageFile.ImageFile):
         if m.group("hotspot"):
             self.info["hotspot"] = (int(m.group("xhot")), int(m.group("yhot")))
 
-        self.mode = "1"
+        self._mode = "1"
         self._size = xsize, ysize
 
-        self.tile = [("xbm", (0, 0) + self.size, m.end(), None)]
+        self.tile = [ImageFile._Tile("xbm", (0, 0) + self.size, m.end(), None)]
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if im.mode != "1":
         msg = f"cannot write mode {im.mode} as XBM"
         raise OSError(msg)
@@ -81,7 +85,7 @@ def _save(im, fp, filename):
 
     fp.write(b"static char im_bits[] = {\n")
 
-    ImageFile._save(im, fp, [("xbm", (0, 0) + im.size, 0, None)])
+    ImageFile._save(im, fp, [ImageFile._Tile("xbm", (0, 0) + im.size, 0, None)])
 
     fp.write(b"};\n")
 
diff --git a/src/PIL/XpmImagePlugin.py b/src/PIL/XpmImagePlugin.py
index 5d5bdc3ed..1fc6c0c39 100644
--- a/src/PIL/XpmImagePlugin.py
+++ b/src/PIL/XpmImagePlugin.py
@@ -13,7 +13,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 import re
 
@@ -24,7 +24,7 @@ from ._binary import o8
 xpm_head = re.compile(b'"([0-9]*) ([0-9]*) ([0-9]*) ([0-9]*)')
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return prefix[:9] == b"/* XPM */"
 
 
@@ -36,7 +36,7 @@ class XpmImageFile(ImageFile.ImageFile):
     format = "XPM"
     format_description = "X11 Pixel Map"
 
-    def _open(self):
+    def _open(self) -> None:
         if not _accept(self.fp.read(9)):
             msg = "not an XPM file"
             raise SyntaxError(msg)
@@ -98,21 +98,20 @@ class XpmImageFile(ImageFile.ImageFile):
                 msg = "cannot read this XPM file"
                 raise ValueError(msg)
 
-        self.mode = "P"
+        self._mode = "P"
         self.palette = ImagePalette.raw("RGB", b"".join(palette))
 
-        self.tile = [("raw", (0, 0) + self.size, self.fp.tell(), ("P", 0, 1))]
+        self.tile = [
+            ImageFile._Tile("raw", (0, 0) + self.size, self.fp.tell(), ("P", 0, 1))
+        ]
 
-    def load_read(self, bytes):
+    def load_read(self, read_bytes: int) -> bytes:
         #
         # load all image data in one chunk
 
         xsize, ysize = self.size
 
-        s = [None] * ysize
-
-        for i in range(ysize):
-            s[i] = self.fp.readline()[1 : xsize + 1].ljust(xsize)
+        s = [self.fp.readline()[1 : xsize + 1].ljust(xsize) for i in range(ysize)]
 
         return b"".join(s)
 
diff --git a/src/PIL/__init__.py b/src/PIL/__init__.py
index 2bb8f6d7f..09546fe63 100644
--- a/src/PIL/__init__.py
+++ b/src/PIL/__init__.py
@@ -1,6 +1,6 @@
 """Pillow (Fork of the Python Imaging Library)
 
-Pillow is the friendly PIL fork by Jeffrey A. Clark (Alex) and contributors.
+Pillow is the friendly PIL fork by Jeffrey A. Clark and contributors.
     https://github.com/python-pillow/Pillow/
 
 Pillow is forked from PIL 1.1.7.
@@ -13,6 +13,8 @@ Use PIL.__version__ for this Pillow version.
 ;-)
 """
 
+from __future__ import annotations
+
 from . import _version
 
 # VERSION was removed in Pillow 6.0.0.
diff --git a/src/PIL/__main__.py b/src/PIL/__main__.py
index a05323f93..043156e89 100644
--- a/src/PIL/__main__.py
+++ b/src/PIL/__main__.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+import sys
+
 from .features import pilinfo
 
-pilinfo()
+pilinfo(supported_formats="--report" not in sys.argv)
diff --git a/src/PIL/_binary.py b/src/PIL/_binary.py
index a74ee9eb6..4594ccce3 100644
--- a/src/PIL/_binary.py
+++ b/src/PIL/_binary.py
@@ -13,21 +13,21 @@
 
 
 """Binary input/output support routines."""
-
+from __future__ import annotations
 
 from struct import pack, unpack_from
 
 
-def i8(c):
-    return c if c.__class__ is int else c[0]
+def i8(c: bytes) -> int:
+    return c[0]
 
 
-def o8(i):
+def o8(i: int) -> bytes:
     return bytes((i & 255,))
 
 
 # Input, le = little endian, be = big endian
-def i16le(c, o=0):
+def i16le(c: bytes, o: int = 0) -> int:
     """
     Converts a 2-bytes (16 bits) string to an unsigned integer.
 
@@ -37,7 +37,7 @@ def i16le(c, o=0):
     return unpack_from("<H", c, o)[0]
 
 
-def si16le(c, o=0):
+def si16le(c: bytes, o: int = 0) -> int:
     """
     Converts a 2-bytes (16 bits) string to a signed integer.
 
@@ -47,7 +47,7 @@ def si16le(c, o=0):
     return unpack_from("<h", c, o)[0]
 
 
-def si16be(c, o=0):
+def si16be(c: bytes, o: int = 0) -> int:
     """
     Converts a 2-bytes (16 bits) string to a signed integer, big endian.
 
@@ -57,7 +57,7 @@ def si16be(c, o=0):
     return unpack_from(">h", c, o)[0]
 
 
-def i32le(c, o=0):
+def i32le(c: bytes, o: int = 0) -> int:
     """
     Converts a 4-bytes (32 bits) string to an unsigned integer.
 
@@ -67,7 +67,7 @@ def i32le(c, o=0):
     return unpack_from("<I", c, o)[0]
 
 
-def si32le(c, o=0):
+def si32le(c: bytes, o: int = 0) -> int:
     """
     Converts a 4-bytes (32 bits) string to a signed integer.
 
@@ -77,26 +77,36 @@ def si32le(c, o=0):
     return unpack_from("<i", c, o)[0]
 
 
-def i16be(c, o=0):
+def si32be(c: bytes, o: int = 0) -> int:
+    """
+    Converts a 4-bytes (32 bits) string to a signed integer, big endian.
+
+    :param c: string containing bytes to convert
+    :param o: offset of bytes to convert in string
+    """
+    return unpack_from(">i", c, o)[0]
+
+
+def i16be(c: bytes, o: int = 0) -> int:
     return unpack_from(">H", c, o)[0]
 
 
-def i32be(c, o=0):
+def i32be(c: bytes, o: int = 0) -> int:
     return unpack_from(">I", c, o)[0]
 
 
 # Output, le = little endian, be = big endian
-def o16le(i):
+def o16le(i: int) -> bytes:
     return pack("<H", i)
 
 
-def o32le(i):
+def o32le(i: int) -> bytes:
     return pack("<I", i)
 
 
-def o16be(i):
+def o16be(i: int) -> bytes:
     return pack(">H", i)
 
 
-def o32be(i):
+def o32be(i: int) -> bytes:
     return pack(">I", i)
diff --git a/src/PIL/_deprecate.py b/src/PIL/_deprecate.py
index 2f2a3df13..83952b397 100644
--- a/src/PIL/_deprecate.py
+++ b/src/PIL/_deprecate.py
@@ -45,8 +45,8 @@ def deprecate(
     elif when <= int(__version__.split(".")[0]):
         msg = f"{deprecated} {is_} deprecated and should be removed."
         raise RuntimeError(msg)
-    elif when == 11:
-        removed = "Pillow 11 (2024-10-15)"
+    elif when == 12:
+        removed = "Pillow 12 (2025-10-15)"
     else:
         msg = f"Unknown removal version: {when}. Update {__name__}?"
         raise ValueError(msg)
diff --git a/src/PIL/_imaging.pyi b/src/PIL/_imaging.pyi
new file mode 100644
index 000000000..998bc52eb
--- /dev/null
+++ b/src/PIL/_imaging.pyi
@@ -0,0 +1,31 @@
+from typing import Any
+
+class ImagingCore:
+    def __getitem__(self, index: int) -> float: ...
+    def __getattr__(self, name: str) -> Any: ...
+
+class ImagingFont:
+    def __getattr__(self, name: str) -> Any: ...
+
+class ImagingDraw:
+    def __getattr__(self, name: str) -> Any: ...
+
+class PixelAccess:
+    def __getitem__(self, xy: tuple[int, int]) -> float | tuple[int, ...]: ...
+    def __setitem__(
+        self, xy: tuple[int, int], color: float | tuple[int, ...]
+    ) -> None: ...
+
+class ImagingDecoder:
+    def __getattr__(self, name: str) -> Any: ...
+
+class ImagingEncoder:
+    def __getattr__(self, name: str) -> Any: ...
+
+class _Outline:
+    def close(self) -> None: ...
+    def __getattr__(self, name: str) -> Any: ...
+
+def font(image: ImagingCore, glyphdata: bytes) -> ImagingFont: ...
+def outline() -> _Outline: ...
+def __getattr__(name: str) -> Any: ...
diff --git a/src/PIL/_imagingcms.pyi b/src/PIL/_imagingcms.pyi
new file mode 100644
index 000000000..ddcf93ab1
--- /dev/null
+++ b/src/PIL/_imagingcms.pyi
@@ -0,0 +1,143 @@
+import datetime
+import sys
+from typing import Literal, SupportsFloat, TypedDict
+
+from ._typing import CapsuleType
+
+littlecms_version: str | None
+
+_Tuple3f = tuple[float, float, float]
+_Tuple2x3f = tuple[_Tuple3f, _Tuple3f]
+_Tuple3x3f = tuple[_Tuple3f, _Tuple3f, _Tuple3f]
+
+class _IccMeasurementCondition(TypedDict):
+    observer: int
+    backing: _Tuple3f
+    geo: str
+    flare: float
+    illuminant_type: str
+
+class _IccViewingCondition(TypedDict):
+    illuminant: _Tuple3f
+    surround: _Tuple3f
+    illuminant_type: str
+
+class CmsProfile:
+    @property
+    def rendering_intent(self) -> int: ...
+    @property
+    def creation_date(self) -> datetime.datetime | None: ...
+    @property
+    def copyright(self) -> str | None: ...
+    @property
+    def target(self) -> str | None: ...
+    @property
+    def manufacturer(self) -> str | None: ...
+    @property
+    def model(self) -> str | None: ...
+    @property
+    def profile_description(self) -> str | None: ...
+    @property
+    def screening_description(self) -> str | None: ...
+    @property
+    def viewing_condition(self) -> str | None: ...
+    @property
+    def version(self) -> float: ...
+    @property
+    def icc_version(self) -> int: ...
+    @property
+    def attributes(self) -> int: ...
+    @property
+    def header_flags(self) -> int: ...
+    @property
+    def header_manufacturer(self) -> str: ...
+    @property
+    def header_model(self) -> str: ...
+    @property
+    def device_class(self) -> str: ...
+    @property
+    def connection_space(self) -> str: ...
+    @property
+    def xcolor_space(self) -> str: ...
+    @property
+    def profile_id(self) -> bytes: ...
+    @property
+    def is_matrix_shaper(self) -> bool: ...
+    @property
+    def technology(self) -> str | None: ...
+    @property
+    def colorimetric_intent(self) -> str | None: ...
+    @property
+    def perceptual_rendering_intent_gamut(self) -> str | None: ...
+    @property
+    def saturation_rendering_intent_gamut(self) -> str | None: ...
+    @property
+    def red_colorant(self) -> _Tuple2x3f | None: ...
+    @property
+    def green_colorant(self) -> _Tuple2x3f | None: ...
+    @property
+    def blue_colorant(self) -> _Tuple2x3f | None: ...
+    @property
+    def red_primary(self) -> _Tuple2x3f | None: ...
+    @property
+    def green_primary(self) -> _Tuple2x3f | None: ...
+    @property
+    def blue_primary(self) -> _Tuple2x3f | None: ...
+    @property
+    def media_white_point_temperature(self) -> float | None: ...
+    @property
+    def media_white_point(self) -> _Tuple2x3f | None: ...
+    @property
+    def media_black_point(self) -> _Tuple2x3f | None: ...
+    @property
+    def luminance(self) -> _Tuple2x3f | None: ...
+    @property
+    def chromatic_adaptation(self) -> tuple[_Tuple3x3f, _Tuple3x3f] | None: ...
+    @property
+    def chromaticity(self) -> _Tuple3x3f | None: ...
+    @property
+    def colorant_table(self) -> list[str] | None: ...
+    @property
+    def colorant_table_out(self) -> list[str] | None: ...
+    @property
+    def intent_supported(self) -> dict[int, tuple[bool, bool, bool]] | None: ...
+    @property
+    def clut(self) -> dict[int, tuple[bool, bool, bool]] | None: ...
+    @property
+    def icc_measurement_condition(self) -> _IccMeasurementCondition | None: ...
+    @property
+    def icc_viewing_condition(self) -> _IccViewingCondition | None: ...
+    def is_intent_supported(self, intent: int, direction: int, /) -> int: ...
+
+class CmsTransform:
+    def apply(self, id_in: CapsuleType, id_out: CapsuleType) -> int: ...
+
+def profile_open(profile: str, /) -> CmsProfile: ...
+def profile_frombytes(profile: bytes, /) -> CmsProfile: ...
+def profile_tobytes(profile: CmsProfile, /) -> bytes: ...
+def buildTransform(
+    input_profile: CmsProfile,
+    output_profile: CmsProfile,
+    in_mode: str,
+    out_mode: str,
+    rendering_intent: int = 0,
+    cms_flags: int = 0,
+    /,
+) -> CmsTransform: ...
+def buildProofTransform(
+    input_profile: CmsProfile,
+    output_profile: CmsProfile,
+    proof_profile: CmsProfile,
+    in_mode: str,
+    out_mode: str,
+    rendering_intent: int = 0,
+    proof_intent: int = 0,
+    cms_flags: int = 0,
+    /,
+) -> CmsTransform: ...
+def createProfile(
+    color_space: Literal["LAB", "XYZ", "sRGB"], color_temp: SupportsFloat = 0.0, /
+) -> CmsProfile: ...
+
+if sys.platform == "win32":
+    def get_display_profile_win32(handle: int = 0, is_dc: int = 0, /) -> str | None: ...
diff --git a/src/PIL/_imagingft.pyi b/src/PIL/_imagingft.pyi
new file mode 100644
index 000000000..9cc9822f5
--- /dev/null
+++ b/src/PIL/_imagingft.pyi
@@ -0,0 +1,69 @@
+from typing import Any, Callable
+
+from . import ImageFont, _imaging
+
+class Font:
+    @property
+    def family(self) -> str | None: ...
+    @property
+    def style(self) -> str | None: ...
+    @property
+    def ascent(self) -> int: ...
+    @property
+    def descent(self) -> int: ...
+    @property
+    def height(self) -> int: ...
+    @property
+    def x_ppem(self) -> int: ...
+    @property
+    def y_ppem(self) -> int: ...
+    @property
+    def glyphs(self) -> int: ...
+    def render(
+        self,
+        string: str | bytes,
+        fill: Callable[[int, int], _imaging.ImagingCore],
+        mode: str,
+        dir: str | None,
+        features: list[str] | None,
+        lang: str | None,
+        stroke_width: float,
+        anchor: str | None,
+        foreground_ink_long: int,
+        x_start: float,
+        y_start: float,
+        /,
+    ) -> tuple[_imaging.ImagingCore, tuple[int, int]]: ...
+    def getsize(
+        self,
+        string: str | bytes | bytearray,
+        mode: str,
+        dir: str | None,
+        features: list[str] | None,
+        lang: str | None,
+        anchor: str | None,
+        /,
+    ) -> tuple[tuple[int, int], tuple[int, int]]: ...
+    def getlength(
+        self,
+        string: str | bytes,
+        mode: str,
+        dir: str | None,
+        features: list[str] | None,
+        lang: str | None,
+        /,
+    ) -> float: ...
+    def getvarnames(self) -> list[bytes]: ...
+    def getvaraxes(self) -> list[ImageFont.Axis]: ...
+    def setvarname(self, instance_index: int, /) -> None: ...
+    def setvaraxes(self, axes: list[float], /) -> None: ...
+
+def getfont(
+    filename: str | bytes,
+    size: float,
+    index: int,
+    encoding: str,
+    font_bytes: bytes,
+    layout_engine: int,
+) -> Font: ...
+def __getattr__(name: str) -> Any: ...
diff --git a/src/PIL/_imagingmath.pyi b/src/PIL/_imagingmath.pyi
new file mode 100644
index 000000000..e27843e53
--- /dev/null
+++ b/src/PIL/_imagingmath.pyi
@@ -0,0 +1,3 @@
+from typing import Any
+
+def __getattr__(name: str) -> Any: ...
diff --git a/src/PIL/_imagingmorph.pyi b/src/PIL/_imagingmorph.pyi
new file mode 100644
index 000000000..e27843e53
--- /dev/null
+++ b/src/PIL/_imagingmorph.pyi
@@ -0,0 +1,3 @@
+from typing import Any
+
+def __getattr__(name: str) -> Any: ...
diff --git a/src/PIL/_imagingtk.pyi b/src/PIL/_imagingtk.pyi
new file mode 100644
index 000000000..e27843e53
--- /dev/null
+++ b/src/PIL/_imagingtk.pyi
@@ -0,0 +1,3 @@
+from typing import Any
+
+def __getattr__(name: str) -> Any: ...
diff --git a/src/PIL/_tkinter_finder.py b/src/PIL/_tkinter_finder.py
index 597c21b5e..beddfb062 100644
--- a/src/PIL/_tkinter_finder.py
+++ b/src/PIL/_tkinter_finder.py
@@ -1,8 +1,12 @@
 """ Find compiled module linking to Tcl / Tk libraries
 """
+
+from __future__ import annotations
+
 import sys
 import tkinter
-from tkinter import _tkinter as tk
+
+tk = getattr(tkinter, "_tkinter")
 
 try:
     if hasattr(sys, "pypy_find_executable"):
diff --git a/src/PIL/_typing.py b/src/PIL/_typing.py
new file mode 100644
index 000000000..335804b79
--- /dev/null
+++ b/src/PIL/_typing.py
@@ -0,0 +1,53 @@
+from __future__ import annotations
+
+import os
+import sys
+from collections.abc import Sequence
+from typing import TYPE_CHECKING, Any, Protocol, TypeVar, Union
+
+if TYPE_CHECKING:
+    from numbers import _IntegralLike as IntegralLike
+
+    try:
+        import numpy.typing as npt
+
+        NumpyArray = npt.NDArray[Any]  # requires numpy>=1.21
+    except (ImportError, AttributeError):
+        pass
+
+if sys.version_info >= (3, 13):
+    from types import CapsuleType
+else:
+    CapsuleType = object
+
+if sys.version_info >= (3, 12):
+    from collections.abc import Buffer
+else:
+    Buffer = Any
+
+if sys.version_info >= (3, 10):
+    from typing import TypeGuard
+else:
+    try:
+        from typing_extensions import TypeGuard
+    except ImportError:
+
+        class TypeGuard:  # type: ignore[no-redef]
+            def __class_getitem__(cls, item: Any) -> type[bool]:
+                return bool
+
+
+Coords = Union[Sequence[float], Sequence[Sequence[float]]]
+
+
+_T_co = TypeVar("_T_co", covariant=True)
+
+
+class SupportsRead(Protocol[_T_co]):
+    def read(self, __length: int = ...) -> _T_co: ...
+
+
+StrOrBytesPath = Union[str, bytes, os.PathLike[str], os.PathLike[bytes]]
+
+
+__all__ = ["Buffer", "IntegralLike", "StrOrBytesPath", "SupportsRead", "TypeGuard"]
diff --git a/src/PIL/_util.py b/src/PIL/_util.py
index ba27b7e49..8ef0d36f7 100644
--- a/src/PIL/_util.py
+++ b/src/PIL/_util.py
@@ -1,19 +1,26 @@
+from __future__ import annotations
+
 import os
-from pathlib import Path
+from typing import Any, NoReturn
+
+from ._typing import StrOrBytesPath, TypeGuard
 
 
-def is_path(f):
-    return isinstance(f, (bytes, str, Path))
-
-
-def is_directory(f):
-    """Checks if an object is a string, and that it points to a directory."""
-    return is_path(f) and os.path.isdir(f)
+def is_path(f: Any) -> TypeGuard[StrOrBytesPath]:
+    return isinstance(f, (bytes, str, os.PathLike))
 
 
 class DeferredError:
-    def __init__(self, ex):
+    def __init__(self, ex: BaseException):
         self.ex = ex
 
-    def __getattr__(self, elt):
+    def __getattr__(self, elt: str) -> NoReturn:
         raise self.ex
+
+    @staticmethod
+    def new(ex: BaseException) -> Any:
+        """
+        Creates an object that raises the wrapped exception ``ex`` when used,
+        and casts it to :py:obj:`~typing.Any` type.
+        """
+        return DeferredError(ex)
diff --git a/src/PIL/_version.py b/src/PIL/_version.py
index 800203d51..0807f949c 100644
--- a/src/PIL/_version.py
+++ b/src/PIL/_version.py
@@ -1,2 +1,4 @@
 # Master version for Pillow
-__version__ = "10.0.0.dev0"
+from __future__ import annotations
+
+__version__ = "11.1.0.dev0"
diff --git a/src/PIL/_webp.pyi b/src/PIL/_webp.pyi
new file mode 100644
index 000000000..e27843e53
--- /dev/null
+++ b/src/PIL/_webp.pyi
@@ -0,0 +1,3 @@
+from typing import Any
+
+def __getattr__(name: str) -> Any: ...
diff --git a/src/PIL/features.py b/src/PIL/features.py
index f14e60cf5..75d59e01c 100644
--- a/src/PIL/features.py
+++ b/src/PIL/features.py
@@ -1,11 +1,15 @@
+from __future__ import annotations
+
 import collections
 import os
 import sys
 import warnings
+from typing import IO
 
 import PIL
 
 from . import Image
+from ._deprecate import deprecate
 
 modules = {
     "pil": ("PIL._imaging", "PILLOW_VERSION"),
@@ -16,7 +20,7 @@ modules = {
 }
 
 
-def check_module(feature):
+def check_module(feature: str) -> bool:
     """
     Checks if a module is available.
 
@@ -40,7 +44,7 @@ def check_module(feature):
         return False
 
 
-def version_module(feature):
+def version_module(feature: str) -> str | None:
     """
     :param feature: The module to check for.
     :returns:
@@ -52,13 +56,10 @@ def version_module(feature):
 
     module, ver = modules[feature]
 
-    if ver is None:
-        return None
-
     return getattr(__import__(module, fromlist=[ver]), ver)
 
 
-def get_supported_modules():
+def get_supported_modules() -> list[str]:
     """
     :returns: A list of all supported modules.
     """
@@ -73,7 +74,7 @@ codecs = {
 }
 
 
-def check_codec(feature):
+def check_codec(feature: str) -> bool:
     """
     Checks if a codec is available.
 
@@ -87,10 +88,10 @@ def check_codec(feature):
 
     codec, lib = codecs[feature]
 
-    return codec + "_encoder" in dir(Image.core)
+    return f"{codec}_encoder" in dir(Image.core)
 
 
-def version_codec(feature):
+def version_codec(feature: str) -> str | None:
     """
     :param feature: The codec to check for.
     :returns:
@@ -103,7 +104,7 @@ def version_codec(feature):
 
     codec, lib = codecs[feature]
 
-    version = getattr(Image.core, lib + "_version")
+    version = getattr(Image.core, f"{lib}_version")
 
     if feature == "libtiff":
         return version.split("\n")[0].split("Version ")[1]
@@ -111,17 +112,17 @@ def version_codec(feature):
     return version
 
 
-def get_supported_codecs():
+def get_supported_codecs() -> list[str]:
     """
     :returns: A list of all supported codecs.
     """
     return [f for f in codecs if check_codec(f)]
 
 
-features = {
-    "webp_anim": ("PIL._webp", "HAVE_WEBPANIM", None),
-    "webp_mux": ("PIL._webp", "HAVE_WEBPMUX", None),
-    "transp_webp": ("PIL._webp", "HAVE_TRANSPARENCY", None),
+features: dict[str, tuple[str, str | bool, str | None]] = {
+    "webp_anim": ("PIL._webp", True, None),
+    "webp_mux": ("PIL._webp", True, None),
+    "transp_webp": ("PIL._webp", True, None),
     "raqm": ("PIL._imagingft", "HAVE_RAQM", "raqm_version"),
     "fribidi": ("PIL._imagingft", "HAVE_FRIBIDI", "fribidi_version"),
     "harfbuzz": ("PIL._imagingft", "HAVE_HARFBUZZ", "harfbuzz_version"),
@@ -131,7 +132,7 @@ features = {
 }
 
 
-def check_feature(feature):
+def check_feature(feature: str) -> bool | None:
     """
     Checks if a feature is available.
 
@@ -145,8 +146,12 @@ def check_feature(feature):
 
     module, flag, ver = features[feature]
 
+    if isinstance(flag, bool):
+        deprecate(f'check_feature("{feature}")', 12)
     try:
         imported_module = __import__(module, fromlist=["PIL"])
+        if isinstance(flag, bool):
+            return flag
         return getattr(imported_module, flag)
     except ModuleNotFoundError:
         return None
@@ -155,7 +160,7 @@ def check_feature(feature):
         return None
 
 
-def version_feature(feature):
+def version_feature(feature: str) -> str | None:
     """
     :param feature: The feature to check for.
     :returns: The version number as a string, or ``None`` if not available.
@@ -172,14 +177,24 @@ def version_feature(feature):
     return getattr(__import__(module, fromlist=[ver]), ver)
 
 
-def get_supported_features():
+def get_supported_features() -> list[str]:
     """
     :returns: A list of all supported features.
     """
-    return [f for f in features if check_feature(f)]
+    supported_features = []
+    for f, (module, flag, _) in features.items():
+        if flag is True:
+            for feature, (feature_module, _) in modules.items():
+                if feature_module == module:
+                    if check_module(feature):
+                        supported_features.append(f)
+                    break
+        elif check_feature(f):
+            supported_features.append(f)
+    return supported_features
 
 
-def check(feature):
+def check(feature: str) -> bool | None:
     """
     :param feature: A module, codec, or feature name.
     :returns:
@@ -197,7 +212,7 @@ def check(feature):
     return False
 
 
-def version(feature):
+def version(feature: str) -> str | None:
     """
     :param feature:
         The module, codec, or feature to check for.
@@ -213,7 +228,7 @@ def version(feature):
     return None
 
 
-def get_supported():
+def get_supported() -> list[str]:
     """
     :returns: A list of all supported modules, features, and codecs.
     """
@@ -224,10 +239,13 @@ def get_supported():
     return ret
 
 
-def pilinfo(out=None, supported_formats=True):
+def pilinfo(out: IO[str] | None = None, supported_formats: bool = True) -> None:
     """
     Prints information about this installation of Pillow.
     This function can be called with ``python3 -m PIL``.
+    It can also be called with ``python3 -m PIL.report`` or ``python3 -m PIL --report``
+    to have "supported_formats" set to ``False``, omitting the list of all supported
+    image file formats.
 
     :param out:
         The output stream to print to. Defaults to ``sys.stdout`` if ``None``.
@@ -242,17 +260,22 @@ def pilinfo(out=None, supported_formats=True):
 
     print("-" * 68, file=out)
     print(f"Pillow {PIL.__version__}", file=out)
-    py_version = sys.version.splitlines()
-    print(f"Python {py_version[0].strip()}", file=out)
-    for py_version in py_version[1:]:
+    py_version_lines = sys.version.splitlines()
+    print(f"Python {py_version_lines[0].strip()}", file=out)
+    for py_version in py_version_lines[1:]:
         print(f"       {py_version.strip()}", file=out)
     print("-" * 68, file=out)
+    print(f"Python executable is {sys.executable or 'unknown'}", file=out)
+    if sys.prefix != sys.base_prefix:
+        print(f"Environment Python files loaded from {sys.prefix}", file=out)
+    print(f"System Python files loaded from {sys.base_prefix}", file=out)
+    print("-" * 68, file=out)
     print(
-        f"Python modules loaded from {os.path.dirname(Image.__file__)}",
+        f"Python Pillow modules loaded from {os.path.dirname(Image.__file__)}",
         file=out,
     )
     print(
-        f"Binary modules loaded from {os.path.dirname(Image.core.__file__)}",
+        f"Binary Pillow modules loaded from {os.path.dirname(Image.core.__file__)}",
         file=out,
     )
     print("-" * 68, file=out)
@@ -263,9 +286,6 @@ def pilinfo(out=None, supported_formats=True):
         ("freetype2", "FREETYPE2"),
         ("littlecms2", "LITTLECMS2"),
         ("webp", "WEBP"),
-        ("transp_webp", "WEBP Transparency"),
-        ("webp_mux", "WEBPMUX"),
-        ("webp_anim", "WEBP Animation"),
         ("jpg", "JPEG"),
         ("jpg_2000", "OPENJPEG (JPEG2000)"),
         ("zlib", "ZLIB (PNG/ZIP)"),
@@ -275,9 +295,12 @@ def pilinfo(out=None, supported_formats=True):
         ("xcb", "XCB (X protocol)"),
     ]:
         if check(name):
-            if name == "jpg" and check_feature("libjpeg_turbo"):
-                v = "libjpeg-turbo " + version_feature("libjpeg_turbo")
-            else:
+            v: str | None = None
+            if name == "jpg":
+                libjpeg_turbo_version = version_feature("libjpeg_turbo")
+                if libjpeg_turbo_version is not None:
+                    v = "libjpeg-turbo " + libjpeg_turbo_version
+            if v is None:
                 v = version(name)
             if v is not None:
                 version_static = name in ("pil", "jpg")
diff --git a/src/PIL/py.typed b/src/PIL/py.typed
new file mode 100644
index 000000000..e69de29bb
diff --git a/src/PIL/report.py b/src/PIL/report.py
new file mode 100644
index 000000000..d2815e845
--- /dev/null
+++ b/src/PIL/report.py
@@ -0,0 +1,5 @@
+from __future__ import annotations
+
+from .features import pilinfo
+
+pilinfo(supported_formats=False)
diff --git a/src/Tk/_tkmini.h b/src/Tk/_tkmini.h
index 68247bc47..a260fa0d1 100644
--- a/src/Tk/_tkmini.h
+++ b/src/Tk/_tkmini.h
@@ -80,7 +80,8 @@ typedef struct Tcl_Command_ *Tcl_Command;
 typedef void *ClientData;
 
 typedef int(Tcl_CmdProc)(
-    ClientData clientData, Tcl_Interp *interp, int argc, const char *argv[]);
+    ClientData clientData, Tcl_Interp *interp, int argc, const char *argv[]
+);
 typedef void(Tcl_CmdDeleteProc)(ClientData clientData);
 
 /* Typedefs derived from function signatures in Tcl header */
@@ -90,7 +91,8 @@ typedef Tcl_Command (*Tcl_CreateCommand_t)(
     const char *cmdName,
     Tcl_CmdProc *proc,
     ClientData clientData,
-    Tcl_CmdDeleteProc *deleteProc);
+    Tcl_CmdDeleteProc *deleteProc
+);
 /* Tcl_AppendResult */
 typedef void (*Tcl_AppendResult_t)(Tcl_Interp *interp, ...);
 
@@ -127,7 +129,8 @@ typedef int (*Tk_PhotoPutBlock_t)(
     int y,
     int width,
     int height,
-    int compRule);
+    int compRule
+);
 /* Tk_FindPhoto */
 typedef Tk_PhotoHandle (*Tk_FindPhoto_t)(Tcl_Interp *interp, const char *imageName);
 /* Tk_PhotoGetImage */
diff --git a/src/Tk/tkImaging.c b/src/Tk/tkImaging.c
index bd3cafe95..a36c3e0bd 100644
--- a/src/Tk/tkImaging.c
+++ b/src/Tk/tkImaging.c
@@ -56,31 +56,48 @@ static Tk_PhotoPutBlock_t TK_PHOTO_PUT_BLOCK;
 
 static Imaging
 ImagingFind(const char *name) {
-    Py_ssize_t id;
+    PyObject *capsule;
+    int direct_pointer = 0;
+    const char *expected = "capsule object \"" IMAGING_MAGIC "\" at 0x";
 
-    /* FIXME: use CObject instead? */
-#if defined(_WIN64)
-    id = _atoi64(name);
-#else
-    id = atol(name);
-#endif
-    if (!id) {
+    if (name[0] == '<') {
+        name++;
+    } else {
+        // Special case for PyPy, where the string representation of a Capsule
+        // refers directly to the pointer itself, not to the PyCapsule object.
+        direct_pointer = 1;
+    }
+
+    if (strncmp(name, expected, strlen(expected))) {
         return NULL;
     }
 
-    return (Imaging)id;
+    capsule = (PyObject *)strtoull(name + strlen(expected), NULL, 16);
+
+    if (direct_pointer) {
+        return (Imaging)capsule;
+    }
+
+    if (!PyCapsule_IsValid(capsule, IMAGING_MAGIC)) {
+        PyErr_Format(PyExc_TypeError, "Expected '%s' Capsule", IMAGING_MAGIC);
+        return NULL;
+    }
+
+    return (Imaging)PyCapsule_GetPointer(capsule, IMAGING_MAGIC);
 }
 
 static int
 PyImagingPhotoPut(
-    ClientData clientdata, Tcl_Interp *interp, int argc, const char **argv) {
+    ClientData clientdata, Tcl_Interp *interp, int argc, const char **argv
+) {
     Imaging im;
     Tk_PhotoHandle photo;
     Tk_PhotoImageBlock block;
 
     if (argc != 3) {
         TCL_APPEND_RESULT(
-            interp, "usage: ", argv[0], " destPhoto srcImage", (char *)NULL);
+            interp, "usage: ", argv[0], " destPhoto srcImage", (char *)NULL
+        );
         return TCL_ERROR;
     }
 
@@ -128,21 +145,16 @@ PyImagingPhotoPut(
     block.pixelPtr = (unsigned char *)im->block;
 
     TK_PHOTO_PUT_BLOCK(
-        interp,
-        photo,
-        &block,
-        0,
-        0,
-        block.width,
-        block.height,
-        TK_PHOTO_COMPOSITE_SET);
+        interp, photo, &block, 0, 0, block.width, block.height, TK_PHOTO_COMPOSITE_SET
+    );
 
     return TCL_OK;
 }
 
 static int
 PyImagingPhotoGet(
-    ClientData clientdata, Tcl_Interp *interp, int argc, const char **argv) {
+    ClientData clientdata, Tcl_Interp *interp, int argc, const char **argv
+) {
     Imaging im;
     Tk_PhotoHandle photo;
     Tk_PhotoImageBlock block;
@@ -150,7 +162,8 @@ PyImagingPhotoGet(
 
     if (argc != 3) {
         TCL_APPEND_RESULT(
-            interp, "usage: ", argv[0], " srcPhoto destImage", (char *)NULL);
+            interp, "usage: ", argv[0], " srcPhoto destImage", (char *)NULL
+        );
         return TCL_ERROR;
     }
 
@@ -190,13 +203,15 @@ TkImaging_Init(Tcl_Interp *interp) {
         "PyImagingPhoto",
         PyImagingPhotoPut,
         (ClientData)0,
-        (Tcl_CmdDeleteProc *)NULL);
+        (Tcl_CmdDeleteProc *)NULL
+    );
     TCL_CREATE_COMMAND(
         interp,
         "PyImagingPhotoGet",
         PyImagingPhotoGet,
         (ClientData)0,
-        (Tcl_CmdDeleteProc *)NULL);
+        (Tcl_CmdDeleteProc *)NULL
+    );
 }
 
 /*
@@ -287,7 +302,7 @@ load_tkinter_funcs(void) {
      * Return 0 for success, non-zero for failure.
      */
 
-    HMODULE* hMods = NULL;
+    HMODULE *hMods = NULL;
     HANDLE hProcess;
     DWORD cbNeeded;
     unsigned int i;
@@ -313,7 +328,7 @@ load_tkinter_funcs(void) {
 #endif
         return 1;
     }
-    if (!(hMods = (HMODULE*) malloc(cbNeeded))) {
+    if (!(hMods = (HMODULE *)malloc(cbNeeded))) {
         PyErr_NoMemory();
         return 1;
     }
@@ -345,7 +360,7 @@ load_tkinter_funcs(void) {
     } else if (found_tk == 0) {
         PyErr_SetString(PyExc_RuntimeError, "Could not find Tk routines");
     }
-    return (int) ((found_tcl != 1) || (found_tk != 1));
+    return (int)((found_tcl != 1) || (found_tk != 1));
 }
 
 #else /* not Windows */
@@ -400,8 +415,9 @@ _func_loader(void *lib) {
         return 1;
     }
     return (
-        (TK_PHOTO_PUT_BLOCK =
-             (Tk_PhotoPutBlock_t)_dfunc(lib, "Tk_PhotoPutBlock")) == NULL);
+        (TK_PHOTO_PUT_BLOCK = (Tk_PhotoPutBlock_t)_dfunc(lib, "Tk_PhotoPutBlock")) ==
+        NULL
+    );
 }
 
 int
diff --git a/src/_imaging.c b/src/_imaging.c
index 5c6380fee..2db4486b2 100644
--- a/src/_imaging.c
+++ b/src/_imaging.c
@@ -92,25 +92,13 @@
 
 #define _USE_MATH_DEFINES
 #include <math.h>
-
-/* Configuration stuff. Feel free to undef things you don't need. */
-#define WITH_IMAGECHOPS  /* ImageChops support */
-#define WITH_IMAGEDRAW   /* ImageDraw support */
-#define WITH_MAPPING     /* use memory mapping to read some file formats */
-#define WITH_IMAGEPATH   /* ImagePath stuff */
-#define WITH_ARROW       /* arrow graphics stuff (experimental) */
-#define WITH_EFFECTS     /* special effects */
-#define WITH_QUANTIZE    /* quantization support */
-#define WITH_RANKFILTER  /* rank filter */
-#define WITH_MODEFILTER  /* mode filter */
-#define WITH_THREADING   /* "friendly" threading support */
-#define WITH_UNSHARPMASK /* Kevin Cazabon's unsharpmask module */
+#include <stddef.h>
 
 #undef VERBOSE
 
 #define B16(p, i) ((((int)p[(i)]) << 8) + p[(i) + 1])
 #define L16(p, i) ((((int)p[(i) + 1]) << 8) + p[(i)])
-#define S16(v) ((v) < 32768 ? (v) : ((v)-65536))
+#define S16(v) ((v) < 32768 ? (v) : ((v) - 65536))
 
 /* -------------------------------------------------------------------- */
 /* OBJECT ADMINISTRATION                        */
@@ -123,8 +111,6 @@ typedef struct {
 
 static PyTypeObject Imaging_Type;
 
-#ifdef WITH_IMAGEDRAW
-
 typedef struct {
     /* to write a character, cut out sxy from glyph data, place
        at current position plus dxy, and advance by (dx, dy) */
@@ -151,8 +137,6 @@ typedef struct {
 
 static PyTypeObject ImagingDraw_Type;
 
-#endif
-
 typedef struct {
     PyObject_HEAD ImagingObject *image;
     int readonly;
@@ -215,16 +199,12 @@ PyImaging_AsImaging(PyObject *op) {
 
 void
 ImagingSectionEnter(ImagingSectionCookie *cookie) {
-#ifdef WITH_THREADING
     *cookie = (PyThreadState *)PyEval_SaveThread();
-#endif
 }
 
 void
 ImagingSectionLeave(ImagingSectionCookie *cookie) {
-#ifdef WITH_THREADING
     PyEval_RestoreThread((PyThreadState *)*cookie);
-#endif
 }
 
 /* -------------------------------------------------------------------- */
@@ -290,7 +270,8 @@ ImagingError_ModeError(void) {
 void *
 ImagingError_ValueError(const char *message) {
     PyErr_SetString(
-        PyExc_ValueError, (message) ? (char *)message : "unrecognized argument value");
+        PyExc_ValueError, (message) ? (char *)message : "unrecognized argument value"
+    );
     return NULL;
 }
 
@@ -467,7 +448,8 @@ getpixel(Imaging im, ImagingAccess access, int x, int y) {
                     return Py_BuildValue("BBB", pixel.b[0], pixel.b[1], pixel.b[2]);
                 case 4:
                     return Py_BuildValue(
-                        "BBBB", pixel.b[0], pixel.b[1], pixel.b[2], pixel.b[3]);
+                        "BBBB", pixel.b[0], pixel.b[1], pixel.b[2], pixel.b[3]
+                    );
             }
             break;
         case IMAGING_TYPE_INT32:
@@ -475,8 +457,10 @@ getpixel(Imaging im, ImagingAccess access, int x, int y) {
         case IMAGING_TYPE_FLOAT32:
             return PyFloat_FromDouble(pixel.f);
         case IMAGING_TYPE_SPECIAL:
-            if (strncmp(im->mode, "I;16", 4) == 0) {
+            if (im->bands == 1) {
                 return PyLong_FromLong(pixel.h);
+            } else {
+                return Py_BuildValue("BBB", pixel.b[0], pixel.b[1], pixel.b[2]);
             }
             break;
     }
@@ -516,7 +500,8 @@ getink(PyObject *color, Imaging im, char *ink) {
             rIsInt = 1;
         } else if (im->bands == 1) {
             PyErr_SetString(
-                PyExc_TypeError, "color must be int or single-element tuple");
+                PyExc_TypeError, "color must be int or single-element tuple"
+            );
             return NULL;
         } else if (tupleSize == -1) {
             PyErr_SetString(PyExc_TypeError, "color must be int or tuple");
@@ -531,7 +516,9 @@ getink(PyObject *color, Imaging im, char *ink) {
                 /* unsigned integer, single layer */
                 if (rIsInt != 1) {
                     if (tupleSize != 1) {
-                        PyErr_SetString(PyExc_TypeError, "color must be int or single-element tuple");
+                        PyErr_SetString(
+                            PyExc_TypeError, "color must be int or single-element tuple"
+                        );
                         return NULL;
                     } else if (!PyArg_ParseTuple(color, "L", &r)) {
                         return NULL;
@@ -550,7 +537,10 @@ getink(PyObject *color, Imaging im, char *ink) {
                     a = 255;
                     if (im->bands == 2) {
                         if (tupleSize != 1 && tupleSize != 2) {
-                            PyErr_SetString(PyExc_TypeError, "color must be int, or tuple of one or two elements");
+                            PyErr_SetString(
+                                PyExc_TypeError,
+                                "color must be int, or tuple of one or two elements"
+                            );
                             return NULL;
                         } else if (!PyArg_ParseTuple(color, "L|i", &r, &a)) {
                             return NULL;
@@ -558,7 +548,11 @@ getink(PyObject *color, Imaging im, char *ink) {
                         g = b = r;
                     } else {
                         if (tupleSize != 3 && tupleSize != 4) {
-                            PyErr_SetString(PyExc_TypeError, "color must be int, or tuple of one, three or four elements");
+                            PyErr_SetString(
+                                PyExc_TypeError,
+                                "color must be int, or tuple of one, three or four "
+                                "elements"
+                            );
                             return NULL;
                         } else if (!PyArg_ParseTuple(color, "Lii|i", &r, &g, &b, &a)) {
                             return NULL;
@@ -597,9 +591,12 @@ getink(PyObject *color, Imaging im, char *ink) {
                     g = (UINT8)(r >> 8);
                     r = (UINT8)r;
                 } else if (tupleSize != 3) {
-                    PyErr_SetString(PyExc_TypeError, "color must be int, or tuple of one or three elements");
+                    PyErr_SetString(
+                        PyExc_TypeError,
+                        "color must be int, or tuple of one or three elements"
+                    );
                     return NULL;
-                } else if (!PyArg_ParseTuple(color, "Lii", &r, &g, &b)) {
+                } else if (!PyArg_ParseTuple(color, "iiL", &b, &g, &r)) {
                     return NULL;
                 }
                 if (!strcmp(im->mode, "BGR;15")) {
@@ -722,7 +719,8 @@ _alpha_composite(ImagingObject *self, PyObject *args) {
     ImagingObject *imagep2;
 
     if (!PyArg_ParseTuple(
-            args, "O!O!", &Imaging_Type, &imagep1, &Imaging_Type, &imagep2)) {
+            args, "O!O!", &Imaging_Type, &imagep1, &Imaging_Type, &imagep2
+        )) {
         return NULL;
     }
 
@@ -737,7 +735,8 @@ _blend(ImagingObject *self, PyObject *args) {
 
     alpha = 0.5;
     if (!PyArg_ParseTuple(
-            args, "O!O!|d", &Imaging_Type, &imagep1, &Imaging_Type, &imagep2, &alpha)) {
+            args, "O!O!|d", &Imaging_Type, &imagep1, &Imaging_Type, &imagep2, &alpha
+        )) {
         return NULL;
     }
 
@@ -816,7 +815,8 @@ _prepare_lut_table(PyObject *table, Py_ssize_t table_size) {
                 break;
             case TYPE_FLOAT32:
                 memcpy(
-                    &item, ((char *)table_data) + i * sizeof(FLOAT32), sizeof(FLOAT32));
+                    &item, ((char *)table_data) + i * sizeof(FLOAT32), sizeof(FLOAT32)
+                );
                 break;
             case TYPE_DOUBLE:
                 memcpy(&dtmp, ((char *)table_data) + i * sizeof(dtmp), sizeof(dtmp));
@@ -867,7 +867,8 @@ _color_lut_3d(ImagingObject *self, PyObject *args) {
             &size1D,
             &size2D,
             &size3D,
-            &table)) {
+            &table
+        )) {
         return NULL;
     }
 
@@ -885,7 +886,8 @@ _color_lut_3d(ImagingObject *self, PyObject *args) {
     if (2 > size1D || size1D > 65 || 2 > size2D || size2D > 65 || 2 > size3D ||
         size3D > 65) {
         PyErr_SetString(
-            PyExc_ValueError, "Table size in any dimension should be from 2 to 65");
+            PyExc_ValueError, "Table size in any dimension should be from 2 to 65"
+        );
         return NULL;
     }
 
@@ -902,13 +904,8 @@ _color_lut_3d(ImagingObject *self, PyObject *args) {
     }
 
     if (!ImagingColorLUT3D_linear(
-            imOut,
-            self->image,
-            table_channels,
-            size1D,
-            size2D,
-            size3D,
-            prepared_table)) {
+            imOut, self->image, table_channels, size1D, size2D, size3D, prepared_table
+        )) {
         free(prepared_table);
         ImagingDelete(imOut);
         return NULL;
@@ -932,7 +929,8 @@ _convert(ImagingObject *self, PyObject *args) {
         if (!PyImaging_Check(paletteimage)) {
             PyObject_Print((PyObject *)paletteimage, stderr, 0);
             PyErr_SetString(
-                PyExc_ValueError, "palette argument must be image with mode 'P'");
+                PyExc_ValueError, "palette argument must be image with mode 'P'"
+            );
             return NULL;
         }
         if (paletteimage->image->palette == NULL) {
@@ -942,7 +940,8 @@ _convert(ImagingObject *self, PyObject *args) {
     }
 
     return PyImagingNew(ImagingConvert(
-        self->image, mode, paletteimage ? paletteimage->image->palette : NULL, dither));
+        self->image, mode, paletteimage ? paletteimage->image->palette : NULL, dither
+    ));
 }
 
 static PyObject *
@@ -950,7 +949,8 @@ _convert2(ImagingObject *self, PyObject *args) {
     ImagingObject *imagep1;
     ImagingObject *imagep2;
     if (!PyArg_ParseTuple(
-            args, "O!O!", &Imaging_Type, &imagep1, &Imaging_Type, &imagep2)) {
+            args, "O!O!", &Imaging_Type, &imagep1, &Imaging_Type, &imagep2
+        )) {
         return NULL;
     }
 
@@ -983,7 +983,8 @@ _convert_matrix(ImagingObject *self, PyObject *args) {
                 m + 8,
                 m + 9,
                 m + 10,
-                m + 11)) {
+                m + 11
+            )) {
             return NULL;
         }
     }
@@ -1044,7 +1045,8 @@ _filter(ImagingObject *self, PyObject *args) {
     float divisor, offset;
     PyObject *kernel = NULL;
     if (!PyArg_ParseTuple(
-            args, "(ii)ffO", &xsize, &ysize, &divisor, &offset, &kernel)) {
+            args, "(ii)ffO", &xsize, &ysize, &divisor, &offset, &kernel
+        )) {
         return NULL;
     }
 
@@ -1069,15 +1071,14 @@ _filter(ImagingObject *self, PyObject *args) {
     return imOut;
 }
 
-#ifdef WITH_UNSHARPMASK
 static PyObject *
 _gaussian_blur(ImagingObject *self, PyObject *args) {
     Imaging imIn;
     Imaging imOut;
 
-    float radius = 0;
+    float xradius, yradius;
     int passes = 3;
-    if (!PyArg_ParseTuple(args, "f|i", &radius, &passes)) {
+    if (!PyArg_ParseTuple(args, "(ff)|i", &xradius, &yradius, &passes)) {
         return NULL;
     }
 
@@ -1087,14 +1088,13 @@ _gaussian_blur(ImagingObject *self, PyObject *args) {
         return NULL;
     }
 
-    if (!ImagingGaussianBlur(imOut, imIn, radius, passes)) {
+    if (!ImagingGaussianBlur(imOut, imIn, xradius, yradius, passes)) {
         ImagingDelete(imOut);
         return NULL;
     }
 
     return PyImagingNew(imOut);
 }
-#endif
 
 static PyObject *
 _getpalette(ImagingObject *self, PyObject *args) {
@@ -1127,7 +1127,8 @@ _getpalette(ImagingObject *self, PyObject *args) {
     }
 
     pack(
-        (UINT8 *)PyBytes_AsString(palette), self->image->palette->palette, palettesize);
+        (UINT8 *)PyBytes_AsString(palette), self->image->palette->palette, palettesize
+    );
 
     return palette;
 }
@@ -1221,7 +1222,8 @@ union hist_extrema {
 
 static union hist_extrema *
 parse_histogram_extremap(
-    ImagingObject *self, PyObject *extremap, union hist_extrema *ep) {
+    ImagingObject *self, PyObject *extremap, union hist_extrema *ep
+) {
     int i0, i1;
     double f0, f1;
 
@@ -1350,7 +1352,6 @@ _entropy(ImagingObject *self, PyObject *args) {
     return PyFloat_FromDouble(-entropy);
 }
 
-#ifdef WITH_MODEFILTER
 static PyObject *
 _modefilter(ImagingObject *self, PyObject *args) {
     int size;
@@ -1360,7 +1361,6 @@ _modefilter(ImagingObject *self, PyObject *args) {
 
     return PyImagingNew(ImagingModeFilter(self->image, size));
 }
-#endif
 
 static PyObject *
 _offset(ImagingObject *self, PyObject *args) {
@@ -1381,7 +1381,8 @@ _paste(ImagingObject *self, PyObject *args) {
     int x0, y0, x1, y1;
     ImagingObject *maskp = NULL;
     if (!PyArg_ParseTuple(
-            args, "O(iiii)|O!", &source, &x0, &y0, &x1, &y1, &Imaging_Type, &maskp)) {
+            args, "O(iiii)|O!", &source, &x0, &y0, &x1, &y1, &Imaging_Type, &maskp
+        )) {
         return NULL;
     }
 
@@ -1393,14 +1394,16 @@ _paste(ImagingObject *self, PyObject *args) {
             x0,
             y0,
             x1,
-            y1);
+            y1
+        );
 
     } else {
         if (!getink(source, self->image, ink)) {
             return NULL;
         }
         status = ImagingFill2(
-            self->image, ink, (maskp) ? maskp->image : NULL, x0, y0, x1, y1);
+            self->image, ink, (maskp) ? maskp->image : NULL, x0, y0, x1, y1
+        );
     }
 
     if (status < 0) {
@@ -1535,14 +1538,14 @@ _putdata(ImagingObject *self, PyObject *args) {
         return NULL;
     }
 
-#define set_value_to_item(seq, i) \
-op = PySequence_Fast_GET_ITEM(seq, i); \
-if (PySequence_Check(op)) { \
-    PyErr_SetString(PyExc_TypeError, "sequence must be flattened"); \
-    return NULL; \
-} else { \
-    value = PyFloat_AsDouble(op); \
-}
+#define set_value_to_item(seq, i)                                       \
+    op = PySequence_Fast_GET_ITEM(seq, i);                              \
+    if (PySequence_Check(op)) {                                         \
+        PyErr_SetString(PyExc_TypeError, "sequence must be flattened"); \
+        return NULL;                                                    \
+    } else {                                                            \
+        value = PyFloat_AsDouble(op);                                   \
+    }
     if (image->image8) {
         if (PyBytes_Check(data)) {
             unsigned char *p;
@@ -1571,21 +1574,54 @@ if (PySequence_Check(op)) { \
                 PyErr_SetString(PyExc_TypeError, must_be_sequence);
                 return NULL;
             }
-            int endian = strncmp(image->mode, "I;16", 4) == 0 ? (strcmp(image->mode, "I;16B") == 0 ? 2 : 1) : 0;
             double value;
-            for (i = x = y = 0; i < n; i++) {
-                set_value_to_item(seq, i);
-                if (scale != 1.0 || offset != 0.0) {
-                    value = value * scale + offset;
+            if (image->bands == 1) {
+                int bigendian = 0;
+                if (image->type == IMAGING_TYPE_SPECIAL) {
+                    // I;16*
+                    if (strcmp(image->mode, "I;16B") == 0
+#ifdef WORDS_BIGENDIAN
+                        || strcmp(image->mode, "I;16N") == 0
+#endif
+                    ) {
+                        bigendian = 1;
+                    }
                 }
-                if (endian == 0) {
-                    image->image8[y][x] = (UINT8)CLIP8(value);
-                } else {
-                    image->image8[y][x * 2 + (endian == 2 ? 1 : 0)] = CLIP8((int)value % 256);
-                    image->image8[y][x * 2 + (endian == 2 ? 0 : 1)] = CLIP8((int)value >> 8);
+                for (i = x = y = 0; i < n; i++) {
+                    set_value_to_item(seq, i);
+                    if (scale != 1.0 || offset != 0.0) {
+                        value = value * scale + offset;
+                    }
+                    if (image->type == IMAGING_TYPE_SPECIAL) {
+                        image->image8[y][x * 2 + (bigendian ? 1 : 0)] =
+                            CLIP8((int)value % 256);
+                        image->image8[y][x * 2 + (bigendian ? 0 : 1)] =
+                            CLIP8((int)value >> 8);
+                    } else {
+                        image->image8[y][x] = (UINT8)CLIP8(value);
+                    }
+                    if (++x >= (int)image->xsize) {
+                        x = 0, y++;
+                    }
                 }
-                if (++x >= (int)image->xsize) {
-                    x = 0, y++;
+            } else {
+                // BGR;*
+                int b;
+                for (i = x = y = 0; i < n; i++) {
+                    char ink[4];
+
+                    op = PySequence_Fast_GET_ITEM(seq, i);
+                    if (!op || !getink(op, image, ink)) {
+                        Py_DECREF(seq);
+                        return NULL;
+                    }
+                    /* FIXME: what about scale and offset? */
+                    for (b = 0; b < image->pixelsize; b++) {
+                        image->image8[y][x * image->pixelsize + b] = ink[b];
+                    }
+                    if (++x >= (int)image->xsize) {
+                        x = 0, y++;
+                    }
                 }
             }
             PyErr_Clear(); /* Avoid weird exceptions */
@@ -1602,8 +1638,7 @@ if (PySequence_Check(op)) { \
                 for (i = x = y = 0; i < n; i++) {
                     double value;
                     set_value_to_item(seq, i);
-                    IMAGING_PIXEL_INT32(image, x, y) =
-                        (INT32)(value * scale + offset);
+                    IMAGING_PIXEL_INT32(image, x, y) = (INT32)(value * scale + offset);
                     if (++x >= (int)image->xsize) {
                         x = 0, y++;
                     }
@@ -1653,8 +1688,6 @@ if (PySequence_Check(op)) { \
     return Py_None;
 }
 
-#ifdef WITH_QUANTIZE
-
 static PyObject *
 _quantize(ImagingObject *self, PyObject *args) {
     int colours = 256;
@@ -1671,17 +1704,18 @@ _quantize(ImagingObject *self, PyObject *args) {
 
     return PyImagingNew(ImagingQuantize(self->image, colours, method, kmeans));
 }
-#endif
 
 static PyObject *
 _putpalette(ImagingObject *self, PyObject *args) {
     ImagingShuffler unpack;
     int bits;
 
-    char *rawmode, *palette_mode;
+    char *palette_mode, *rawmode;
     UINT8 *palette;
     Py_ssize_t palettesize;
-    if (!PyArg_ParseTuple(args, "sy#", &rawmode, &palette, &palettesize)) {
+    if (!PyArg_ParseTuple(
+            args, "ssy#", &palette_mode, &rawmode, &palette, &palettesize
+        )) {
         return NULL;
     }
 
@@ -1691,7 +1725,6 @@ _putpalette(ImagingObject *self, PyObject *args) {
         return NULL;
     }
 
-    palette_mode = strncmp("RGBA", rawmode, 4) == 0 ? "RGBA" : "RGB";
     unpack = ImagingFindUnpacker(palette_mode, rawmode, &bits);
     if (!unpack) {
         PyErr_SetString(PyExc_ValueError, wrong_raw_mode);
@@ -1806,7 +1839,6 @@ _putpixel(ImagingObject *self, PyObject *args) {
     return Py_None;
 }
 
-#ifdef WITH_RANKFILTER
 static PyObject *
 _rankfilter(ImagingObject *self, PyObject *args) {
     int size, rank;
@@ -1816,7 +1848,6 @@ _rankfilter(ImagingObject *self, PyObject *args) {
 
     return PyImagingNew(ImagingRankFilter(self->image, size, rank));
 }
-#endif
 
 static PyObject *
 _resize(ImagingObject *self, PyObject *args) {
@@ -1840,7 +1871,8 @@ _resize(ImagingObject *self, PyObject *args) {
             &box[0],
             &box[1],
             &box[2],
-            &box[3])) {
+            &box[3]
+        )) {
         return NULL;
     }
 
@@ -1876,7 +1908,8 @@ _resize(ImagingObject *self, PyObject *args) {
         imOut = ImagingNewDirty(imIn->mode, xsize, ysize);
 
         imOut = ImagingTransform(
-            imOut, imIn, IMAGING_TRANSFORM_AFFINE, 0, 0, xsize, ysize, a, filter, 1);
+            imOut, imIn, IMAGING_TRANSFORM_AFFINE, 0, 0, xsize, ysize, a, filter, 1
+        );
     } else {
         imOut = ImagingResample(imIn, xsize, ysize, filter, box);
     }
@@ -1897,14 +1930,8 @@ _reduce(ImagingObject *self, PyObject *args) {
     box[3] = imIn->ysize;
 
     if (!PyArg_ParseTuple(
-            args,
-            "(ii)|(iiii)",
-            &xscale,
-            &yscale,
-            &box[0],
-            &box[1],
-            &box[2],
-            &box[3])) {
+            args, "(ii)|(iiii)", &xscale, &yscale, &box[0], &box[1], &box[2], &box[3]
+        )) {
         return NULL;
     }
 
@@ -1981,7 +2008,7 @@ im_setmode(ImagingObject *self, PyObject *args) {
 }
 
 static PyObject *
-_transform2(ImagingObject *self, PyObject *args) {
+_transform(ImagingObject *self, PyObject *args) {
     static const char *wrong_number = "wrong number of matrix entries";
 
     Imaging imOut;
@@ -2006,7 +2033,8 @@ _transform2(ImagingObject *self, PyObject *args) {
             &method,
             &data,
             &filter,
-            &fill)) {
+            &fill
+        )) {
         return NULL;
     }
 
@@ -2030,7 +2058,8 @@ _transform2(ImagingObject *self, PyObject *args) {
     }
 
     imOut = ImagingTransform(
-        self->image, imagep->image, method, x0, y0, x1, y1, a, filter, fill);
+        self->image, imagep->image, method, x0, y0, x1, y1, a, filter, fill
+    );
 
     free(a);
 
@@ -2100,7 +2129,6 @@ _transpose(ImagingObject *self, PyObject *args) {
     return PyImagingNew(imOut);
 }
 
-#ifdef WITH_UNSHARPMASK
 static PyObject *
 _unsharp_mask(ImagingObject *self, PyObject *args) {
     Imaging imIn;
@@ -2124,16 +2152,15 @@ _unsharp_mask(ImagingObject *self, PyObject *args) {
 
     return PyImagingNew(imOut);
 }
-#endif
 
 static PyObject *
 _box_blur(ImagingObject *self, PyObject *args) {
     Imaging imIn;
     Imaging imOut;
 
-    float radius;
+    float xradius, yradius;
     int n = 1;
-    if (!PyArg_ParseTuple(args, "f|i", &radius, &n)) {
+    if (!PyArg_ParseTuple(args, "(ff)|i", &xradius, &yradius, &n)) {
         return NULL;
     }
 
@@ -2143,7 +2170,7 @@ _box_blur(ImagingObject *self, PyObject *args) {
         return NULL;
     }
 
-    if (!ImagingBoxBlur(imOut, imIn, radius, n)) {
+    if (!ImagingBoxBlur(imOut, imIn, xradius, yradius, n)) {
         ImagingDelete(imOut);
         return NULL;
     }
@@ -2159,9 +2186,15 @@ _isblock(ImagingObject *self) {
 }
 
 static PyObject *
-_getbbox(ImagingObject *self) {
+_getbbox(ImagingObject *self, PyObject *args) {
     int bbox[4];
-    if (!ImagingGetBBox(self->image, bbox)) {
+
+    int alpha_only = 1;
+    if (!PyArg_ParseTuple(args, "|i", &alpha_only)) {
+        return NULL;
+    }
+
+    if (!ImagingGetBBox(self->image, bbox, alpha_only)) {
         Py_INCREF(Py_None);
         return Py_None;
     }
@@ -2197,7 +2230,13 @@ _getcolors(ImagingObject *self, PyObject *args) {
         for (i = 0; i < colors; i++) {
             ImagingColorItem *v = &items[i];
             PyObject *item = Py_BuildValue(
-                "iN", v->count, getpixel(self->image, self->access, v->x, v->y));
+                "iN", v->count, getpixel(self->image, self->access, v->x, v->y)
+            );
+            if (item == NULL) {
+                Py_DECREF(out);
+                free(items);
+                return NULL;
+            }
             PyList_SetItem(out, i, item);
         }
     }
@@ -2258,14 +2297,16 @@ _getprojection(ImagingObject *self) {
     }
 
     ImagingGetProjection(
-        self->image, (unsigned char *)xprofile, (unsigned char *)yprofile);
+        self->image, (unsigned char *)xprofile, (unsigned char *)yprofile
+    );
 
     result = Py_BuildValue(
         "y#y#",
         xprofile,
         (Py_ssize_t)self->image->xsize,
         yprofile,
-        (Py_ssize_t)self->image->ysize);
+        (Py_ssize_t)self->image->ysize
+    );
 
     free(xprofile);
     free(yprofile);
@@ -2339,7 +2380,8 @@ _merge(PyObject *self, PyObject *args) {
             &Imaging_Type,
             &band2,
             &Imaging_Type,
-            &band3)) {
+            &band3
+        )) {
         return NULL;
     }
 
@@ -2386,9 +2428,7 @@ _split(ImagingObject *self) {
     return list;
 }
 
-/* -------------------------------------------------------------------- */
-
-#ifdef WITH_IMAGECHOPS
+/* Channel operations (ImageChops) ------------------------------------ */
 
 static PyObject *
 _chop_invert(ImagingObject *self) {
@@ -2569,11 +2609,8 @@ _chop_overlay(ImagingObject *self, PyObject *args) {
 
     return PyImagingNew(ImagingOverlay(self->image, imagep->image));
 }
-#endif
 
-/* -------------------------------------------------------------------- */
-
-#ifdef WITH_IMAGEDRAW
+/* Fonts (ImageDraw and ImageFont) ------------------------------------ */
 
 static PyObject *
 _font_new(PyObject *self_, PyObject *args) {
@@ -2585,7 +2622,8 @@ _font_new(PyObject *self_, PyObject *args) {
     unsigned char *glyphdata;
     Py_ssize_t glyphdata_length;
     if (!PyArg_ParseTuple(
-            args, "O!y#", &Imaging_Type, &imagep, &glyphdata, &glyphdata_length)) {
+            args, "O!y#", &Imaging_Type, &imagep, &glyphdata, &glyphdata_length
+        )) {
         return NULL;
     }
 
@@ -2616,6 +2654,26 @@ _font_new(PyObject *self_, PyObject *args) {
         self->glyphs[i].sy0 = S16(B16(glyphdata, 14));
         self->glyphs[i].sx1 = S16(B16(glyphdata, 16));
         self->glyphs[i].sy1 = S16(B16(glyphdata, 18));
+
+        // Do not allow glyphs to extend beyond bitmap image
+        // Helps prevent DOS by stopping cropped images being larger than the original
+        if (self->glyphs[i].sx0 < 0) {
+            self->glyphs[i].dx0 -= self->glyphs[i].sx0;
+            self->glyphs[i].sx0 = 0;
+        }
+        if (self->glyphs[i].sy0 < 0) {
+            self->glyphs[i].dy0 -= self->glyphs[i].sy0;
+            self->glyphs[i].sy0 = 0;
+        }
+        if (self->glyphs[i].sx1 > self->bitmap->xsize) {
+            self->glyphs[i].dx1 -= self->glyphs[i].sx1 - self->bitmap->xsize;
+            self->glyphs[i].sx1 = self->bitmap->xsize;
+        }
+        if (self->glyphs[i].sy1 > self->bitmap->ysize) {
+            self->glyphs[i].dy1 -= self->glyphs[i].sy1 - self->bitmap->ysize;
+            self->glyphs[i].sy1 = self->bitmap->ysize;
+        }
+
         if (self->glyphs[i].dy0 < y0) {
             y0 = self->glyphs[i].dy0;
         }
@@ -2688,7 +2746,7 @@ _font_text_asBytes(PyObject *encoded_string, unsigned char **text) {
 static PyObject *
 _font_getmask(ImagingFontObject *self, PyObject *args) {
     Imaging im;
-    Imaging bitmap;
+    Imaging bitmap = NULL;
     int x, b;
     int i = 0;
     int status;
@@ -2697,7 +2755,7 @@ _font_getmask(ImagingFontObject *self, PyObject *args) {
     PyObject *encoded_string;
 
     unsigned char *text;
-    char *mode = "";
+    char *mode;
 
     if (!PyArg_ParseTuple(args, "O|s:getmask", &encoded_string, &mode)) {
         return NULL;
@@ -2720,10 +2778,14 @@ _font_getmask(ImagingFontObject *self, PyObject *args) {
     b = self->baseline;
     for (x = 0; text[i]; i++) {
         glyph = &self->glyphs[text[i]];
-        bitmap =
-            ImagingCrop(self->bitmap, glyph->sx0, glyph->sy0, glyph->sx1, glyph->sy1);
-        if (!bitmap) {
-            goto failed;
+        if (i == 0 || text[i] != text[i - 1]) {
+            ImagingDelete(bitmap);
+            bitmap = ImagingCrop(
+                self->bitmap, glyph->sx0, glyph->sy0, glyph->sx1, glyph->sy1
+            );
+            if (!bitmap) {
+                goto failed;
+            }
         }
         status = ImagingPaste(
             im,
@@ -2732,18 +2794,20 @@ _font_getmask(ImagingFontObject *self, PyObject *args) {
             glyph->dx0 + x,
             glyph->dy0 + b,
             glyph->dx1 + x,
-            glyph->dy1 + b);
-        ImagingDelete(bitmap);
+            glyph->dy1 + b
+        );
         if (status < 0) {
             goto failed;
         }
         x = x + glyph->dx;
         b = b + glyph->dy;
     }
+    ImagingDelete(bitmap);
     free(text);
     return PyImagingNew(im);
 
 failed:
+    ImagingDelete(bitmap);
     free(text);
     ImagingDelete(im);
     Py_RETURN_NONE;
@@ -2775,7 +2839,7 @@ static struct PyMethodDef _font_methods[] = {
     {NULL, NULL} /* sentinel */
 };
 
-/* -------------------------------------------------------------------- */
+/* Graphics (ImageDraw) ----------------------------------------------- */
 
 static PyObject *
 _draw_new(PyObject *self_, PyObject *args) {
@@ -2870,7 +2934,8 @@ _draw_arc(ImagingDrawObject *self, PyObject *args) {
         end,
         &ink,
         width,
-        self->blend);
+        self->blend
+    );
 
     free(xy);
 
@@ -2900,13 +2965,15 @@ _draw_bitmap(ImagingDrawObject *self, PyObject *args) {
     }
     if (n != 1) {
         PyErr_SetString(
-            PyExc_TypeError, "coordinate list must contain exactly 1 coordinate");
+            PyExc_TypeError, "coordinate list must contain exactly 1 coordinate"
+        );
         free(xy);
         return NULL;
     }
 
     n = ImagingDrawBitmap(
-        self->image->image, (int)xy[0], (int)xy[1], bitmap->image, &ink, self->blend);
+        self->image->image, (int)xy[0], (int)xy[1], bitmap->image, &ink, self->blend
+    );
 
     free(xy);
 
@@ -2962,7 +3029,8 @@ _draw_chord(ImagingDrawObject *self, PyObject *args) {
         &ink,
         fill,
         width,
-        self->blend);
+        self->blend
+    );
 
     free(xy);
 
@@ -3016,7 +3084,8 @@ _draw_ellipse(ImagingDrawObject *self, PyObject *args) {
         &ink,
         fill,
         width,
-        self->blend);
+        self->blend
+    );
 
     free(xy);
 
@@ -3056,14 +3125,16 @@ _draw_lines(ImagingDrawObject *self, PyObject *args) {
                     (int)p[2],
                     (int)p[3],
                     &ink,
-                    self->blend) < 0) {
+                    self->blend
+                ) < 0) {
                 free(xy);
                 return NULL;
             }
         }
         if (p) { /* draw last point */
             ImagingDrawPoint(
-                self->image->image, (int)p[2], (int)p[3], &ink, self->blend);
+                self->image->image, (int)p[2], (int)p[3], &ink, self->blend
+            );
         }
     } else {
         for (i = 0; i < n - 1; i++) {
@@ -3076,7 +3147,8 @@ _draw_lines(ImagingDrawObject *self, PyObject *args) {
                     (int)p[3],
                     &ink,
                     width,
-                    self->blend) < 0) {
+                    self->blend
+                ) < 0) {
                 free(xy);
                 return NULL;
             }
@@ -3108,7 +3180,8 @@ _draw_points(ImagingDrawObject *self, PyObject *args) {
     for (i = 0; i < n; i++) {
         double *p = &xy[i + i];
         if (ImagingDrawPoint(
-                self->image->image, (int)p[0], (int)p[1], &ink, self->blend) < 0) {
+                self->image->image, (int)p[0], (int)p[1], &ink, self->blend
+            ) < 0) {
             free(xy);
             return NULL;
         }
@@ -3120,8 +3193,6 @@ _draw_points(ImagingDrawObject *self, PyObject *args) {
     return Py_None;
 }
 
-#ifdef WITH_ARROW
-
 /* from outline.c */
 extern ImagingOutline
 PyOutline_AsOutline(PyObject *outline);
@@ -3151,8 +3222,6 @@ _draw_outline(ImagingDrawObject *self, PyObject *args) {
     return Py_None;
 }
 
-#endif
-
 static PyObject *
 _draw_pieslice(ImagingDrawObject *self, PyObject *args) {
     double *xy;
@@ -3197,7 +3266,8 @@ _draw_pieslice(ImagingDrawObject *self, PyObject *args) {
         &ink,
         fill,
         width,
-        self->blend);
+        self->blend
+    );
 
     free(xy);
 
@@ -3229,7 +3299,8 @@ _draw_polygon(ImagingDrawObject *self, PyObject *args) {
     }
     if (n < 2) {
         PyErr_SetString(
-            PyExc_TypeError, "coordinate list must contain at least 2 coordinates");
+            PyExc_TypeError, "coordinate list must contain at least 2 coordinates"
+        );
         free(xy);
         return NULL;
     }
@@ -3248,7 +3319,8 @@ _draw_polygon(ImagingDrawObject *self, PyObject *args) {
 
     free(xy);
 
-    if (ImagingDrawPolygon(self->image->image, n, ixy, &ink, fill, width, self->blend) < 0) {
+    if (ImagingDrawPolygon(self->image->image, n, ixy, &ink, fill, width, self->blend) <
+        0) {
         free(ixy);
         return NULL;
     }
@@ -3301,7 +3373,8 @@ _draw_rectangle(ImagingDrawObject *self, PyObject *args) {
         &ink,
         fill,
         width,
-        self->blend);
+        self->blend
+    );
 
     free(xy);
 
@@ -3314,12 +3387,9 @@ _draw_rectangle(ImagingDrawObject *self, PyObject *args) {
 }
 
 static struct PyMethodDef _draw_methods[] = {
-#ifdef WITH_IMAGEDRAW
     /* Graphics (ImageDraw) */
     {"draw_lines", (PyCFunction)_draw_lines, METH_VARARGS},
-#ifdef WITH_ARROW
     {"draw_outline", (PyCFunction)_draw_outline, METH_VARARGS},
-#endif
     {"draw_polygon", (PyCFunction)_draw_polygon, METH_VARARGS},
     {"draw_rectangle", (PyCFunction)_draw_rectangle, METH_VARARGS},
     {"draw_points", (PyCFunction)_draw_points, METH_VARARGS},
@@ -3329,12 +3399,9 @@ static struct PyMethodDef _draw_methods[] = {
     {"draw_ellipse", (PyCFunction)_draw_ellipse, METH_VARARGS},
     {"draw_pieslice", (PyCFunction)_draw_pieslice, METH_VARARGS},
     {"draw_ink", (PyCFunction)_draw_ink, METH_VARARGS},
-#endif
     {NULL, NULL} /* sentinel */
 };
 
-#endif
-
 static PyObject *
 pixel_access_new(ImagingObject *imagep, PyObject *args) {
     PixelAccessObject *self;
@@ -3415,11 +3482,9 @@ pixel_access_setitem(PixelAccessObject *self, PyObject *xy, PyObject *color) {
 }
 
 /* -------------------------------------------------------------------- */
-/* EFFECTS (experimental)                            */
+/* EFFECTS (experimental)                                               */
 /* -------------------------------------------------------------------- */
 
-#ifdef WITH_EFFECTS
-
 static PyObject *
 _effect_mandelbrot(ImagingObject *self, PyObject *args) {
     int xsize = 512;
@@ -3441,7 +3506,8 @@ _effect_mandelbrot(ImagingObject *self, PyObject *args) {
             &extent[1],
             &extent[2],
             &extent[3],
-            &quality)) {
+            &quality
+        )) {
         return NULL;
     }
 
@@ -3470,8 +3536,6 @@ _effect_spread(ImagingObject *self, PyObject *args) {
     return PyImagingNew(ImagingEffectSpread(self->image, dist));
 }
 
-#endif
-
 /* -------------------------------------------------------------------- */
 /* UTILITIES                                */
 /* -------------------------------------------------------------------- */
@@ -3552,28 +3616,22 @@ static struct PyMethodDef methods[] = {
     {"filter", (PyCFunction)_filter, METH_VARARGS},
     {"histogram", (PyCFunction)_histogram, METH_VARARGS},
     {"entropy", (PyCFunction)_entropy, METH_VARARGS},
-#ifdef WITH_MODEFILTER
     {"modefilter", (PyCFunction)_modefilter, METH_VARARGS},
-#endif
     {"offset", (PyCFunction)_offset, METH_VARARGS},
     {"paste", (PyCFunction)_paste, METH_VARARGS},
     {"point", (PyCFunction)_point, METH_VARARGS},
     {"point_transform", (PyCFunction)_point_transform, METH_VARARGS},
     {"putdata", (PyCFunction)_putdata, METH_VARARGS},
-#ifdef WITH_QUANTIZE
     {"quantize", (PyCFunction)_quantize, METH_VARARGS},
-#endif
-#ifdef WITH_RANKFILTER
     {"rankfilter", (PyCFunction)_rankfilter, METH_VARARGS},
-#endif
     {"resize", (PyCFunction)_resize, METH_VARARGS},
     {"reduce", (PyCFunction)_reduce, METH_VARARGS},
     {"transpose", (PyCFunction)_transpose, METH_VARARGS},
-    {"transform2", (PyCFunction)_transform2, METH_VARARGS},
+    {"transform", (PyCFunction)_transform, METH_VARARGS},
 
     {"isblock", (PyCFunction)_isblock, METH_NOARGS},
 
-    {"getbbox", (PyCFunction)_getbbox, METH_NOARGS},
+    {"getbbox", (PyCFunction)_getbbox, METH_VARARGS},
     {"getcolors", (PyCFunction)_getcolors, METH_VARARGS},
     {"getextrema", (PyCFunction)_getextrema, METH_NOARGS},
     {"getprojection", (PyCFunction)_getprojection, METH_NOARGS},
@@ -3591,7 +3649,6 @@ static struct PyMethodDef methods[] = {
     {"putpalettealpha", (PyCFunction)_putpalettealpha, METH_VARARGS},
     {"putpalettealphas", (PyCFunction)_putpalettealphas, METH_VARARGS},
 
-#ifdef WITH_IMAGECHOPS
     /* Channel operations (ImageChops) */
     {"chop_invert", (PyCFunction)_chop_invert, METH_NOARGS},
     {"chop_lighter", (PyCFunction)_chop_lighter, METH_VARARGS},
@@ -3610,24 +3667,15 @@ static struct PyMethodDef methods[] = {
     {"chop_hard_light", (PyCFunction)_chop_hard_light, METH_VARARGS},
     {"chop_overlay", (PyCFunction)_chop_overlay, METH_VARARGS},
 
-#endif
-
-#ifdef WITH_UNSHARPMASK
-    /* Kevin Cazabon's unsharpmask extension */
+    /* Unsharpmask extension */
     {"gaussian_blur", (PyCFunction)_gaussian_blur, METH_VARARGS},
     {"unsharp_mask", (PyCFunction)_unsharp_mask, METH_VARARGS},
-#endif
-
     {"box_blur", (PyCFunction)_box_blur, METH_VARARGS},
 
-#ifdef WITH_EFFECTS
     /* Special effects */
     {"effect_spread", (PyCFunction)_effect_spread, METH_VARARGS},
-#endif
 
     /* Misc. */
-    {"new_block", (PyCFunction)_new_block, METH_VARARGS},
-
     {"save_ppm", (PyCFunction)_save_ppm, METH_VARARGS},
 
     {NULL, NULL} /* sentinel */
@@ -3652,16 +3700,40 @@ _getattr_bands(ImagingObject *self, void *closure) {
 
 static PyObject *
 _getattr_id(ImagingObject *self, void *closure) {
+    if (PyErr_WarnEx(
+            PyExc_DeprecationWarning,
+            "id property is deprecated and will be removed in Pillow 12 (2025-10-15)",
+            1
+        ) < 0) {
+        return NULL;
+    }
     return PyLong_FromSsize_t((Py_ssize_t)self->image);
 }
 
+static void
+_ptr_destructor(PyObject *capsule) {
+    PyObject *self = (PyObject *)PyCapsule_GetContext(capsule);
+    Py_DECREF(self);
+}
+
 static PyObject *
 _getattr_ptr(ImagingObject *self, void *closure) {
-    return PyCapsule_New(self->image, IMAGING_MAGIC, NULL);
+    PyObject *capsule = PyCapsule_New(self->image, IMAGING_MAGIC, _ptr_destructor);
+    Py_INCREF(self);
+    PyCapsule_SetContext(capsule, self);
+    return capsule;
 }
 
 static PyObject *
 _getattr_unsafe_ptrs(ImagingObject *self, void *closure) {
+    if (PyErr_WarnEx(
+            PyExc_DeprecationWarning,
+            "unsafe_ptrs property is deprecated and will be removed in Pillow 12 "
+            "(2025-10-15)",
+            1
+        ) < 0) {
+        return NULL;
+    }
     return Py_BuildValue(
         "(sn)(sn)(sn)",
         "image8",
@@ -3669,8 +3741,9 @@ _getattr_unsafe_ptrs(ImagingObject *self, void *closure) {
         "image32",
         self->image->image32,
         "image",
-        self->image->image);
-};
+        self->image->image
+    );
+}
 
 static struct PyGetSetDef getsetters[] = {
     {"mode", (getter)_getattr_mode},
@@ -3679,7 +3752,8 @@ static struct PyGetSetDef getsetters[] = {
     {"id", (getter)_getattr_id},
     {"ptr", (getter)_getattr_ptr},
     {"unsafe_ptrs", (getter)_getattr_unsafe_ptrs},
-    {NULL}};
+    {NULL}
+};
 
 /* basic sequence semantics */
 
@@ -3719,18 +3793,18 @@ static PySequenceMethods image_as_sequence = {
 
 static PyTypeObject Imaging_Type = {
     PyVarObject_HEAD_INIT(NULL, 0) "ImagingCore", /*tp_name*/
-    sizeof(ImagingObject),                        /*tp_size*/
+    sizeof(ImagingObject),                        /*tp_basicsize*/
     0,                                            /*tp_itemsize*/
     /* methods */
     (destructor)_dealloc, /*tp_dealloc*/
-    0,                    /*tp_print*/
+    0,                    /*tp_vectorcall_offset*/
     0,                    /*tp_getattr*/
     0,                    /*tp_setattr*/
-    0,                    /*tp_compare*/
+    0,                    /*tp_as_async*/
     0,                    /*tp_repr*/
-    0,                    /*tp_as_number */
-    &image_as_sequence,   /*tp_as_sequence */
-    0,                    /*tp_as_mapping */
+    0,                    /*tp_as_number*/
+    &image_as_sequence,   /*tp_as_sequence*/
+    0,                    /*tp_as_mapping*/
     0,                    /*tp_hash*/
     0,                    /*tp_call*/
     0,                    /*tp_str*/
@@ -3750,22 +3824,20 @@ static PyTypeObject Imaging_Type = {
     getsetters,           /*tp_getset*/
 };
 
-#ifdef WITH_IMAGEDRAW
-
 static PyTypeObject ImagingFont_Type = {
     PyVarObject_HEAD_INIT(NULL, 0) "ImagingFont", /*tp_name*/
-    sizeof(ImagingFontObject),                    /*tp_size*/
+    sizeof(ImagingFontObject),                    /*tp_basicsize*/
     0,                                            /*tp_itemsize*/
     /* methods */
     (destructor)_font_dealloc, /*tp_dealloc*/
-    0,                         /*tp_print*/
+    0,                         /*tp_vectorcall_offset*/
     0,                         /*tp_getattr*/
     0,                         /*tp_setattr*/
-    0,                         /*tp_compare*/
+    0,                         /*tp_as_async*/
     0,                         /*tp_repr*/
-    0,                         /*tp_as_number */
-    0,                         /*tp_as_sequence */
-    0,                         /*tp_as_mapping */
+    0,                         /*tp_as_number*/
+    0,                         /*tp_as_sequence*/
+    0,                         /*tp_as_mapping*/
     0,                         /*tp_hash*/
     0,                         /*tp_call*/
     0,                         /*tp_str*/
@@ -3787,18 +3859,18 @@ static PyTypeObject ImagingFont_Type = {
 
 static PyTypeObject ImagingDraw_Type = {
     PyVarObject_HEAD_INIT(NULL, 0) "ImagingDraw", /*tp_name*/
-    sizeof(ImagingDrawObject),                    /*tp_size*/
+    sizeof(ImagingDrawObject),                    /*tp_basicsize*/
     0,                                            /*tp_itemsize*/
     /* methods */
     (destructor)_draw_dealloc, /*tp_dealloc*/
-    0,                         /*tp_print*/
+    0,                         /*tp_vectorcall_offset*/
     0,                         /*tp_getattr*/
     0,                         /*tp_setattr*/
-    0,                         /*tp_compare*/
+    0,                         /*tp_as_async*/
     0,                         /*tp_repr*/
-    0,                         /*tp_as_number */
-    0,                         /*tp_as_sequence */
-    0,                         /*tp_as_mapping */
+    0,                         /*tp_as_number*/
+    0,                         /*tp_as_sequence*/
+    0,                         /*tp_as_mapping*/
     0,                         /*tp_hash*/
     0,                         /*tp_call*/
     0,                         /*tp_str*/
@@ -3818,8 +3890,6 @@ static PyTypeObject ImagingDraw_Type = {
     0,                         /*tp_getset*/
 };
 
-#endif
-
 static PyMappingMethods pixel_access_as_mapping = {
     (lenfunc)NULL,                       /*mp_length*/
     (binaryfunc)pixel_access_getitem,    /*mp_subscript*/
@@ -3829,19 +3899,19 @@ static PyMappingMethods pixel_access_as_mapping = {
 /* type description */
 
 static PyTypeObject PixelAccess_Type = {
-    PyVarObject_HEAD_INIT(NULL, 0) "PixelAccess",
-    sizeof(PixelAccessObject),
-    0,
+    PyVarObject_HEAD_INIT(NULL, 0) "PixelAccess", /*tp_name*/
+    sizeof(PixelAccessObject),                    /*tp_basicsize*/
+    0,                                            /*tp_itemsize*/
     /* methods */
     (destructor)pixel_access_dealloc, /*tp_dealloc*/
-    0,                                /*tp_print*/
+    0,                                /*tp_vectorcall_offset*/
     0,                                /*tp_getattr*/
     0,                                /*tp_setattr*/
-    0,                                /*tp_compare*/
+    0,                                /*tp_as_async*/
     0,                                /*tp_repr*/
-    0,                                /*tp_as_number */
-    0,                                /*tp_as_sequence */
-    &pixel_access_as_mapping,         /*tp_as_mapping */
+    0,                                /*tp_as_number*/
+    0,                                /*tp_as_sequence*/
+    &pixel_access_as_mapping,         /*tp_as_mapping*/
     0                                 /*tp_hash*/
 };
 
@@ -3851,7 +3921,6 @@ static PyObject *
 _get_stats(PyObject *self, PyObject *args) {
     PyObject *d;
     PyObject *v;
-    ImagingMemoryArena arena = &ImagingDefaultArena;
 
     if (!PyArg_ParseTuple(args, ":get_stats")) {
         return NULL;
@@ -3861,6 +3930,10 @@ _get_stats(PyObject *self, PyObject *args) {
     if (!d) {
         return NULL;
     }
+
+    MUTEX_LOCK(&ImagingDefaultArena.mutex);
+    ImagingMemoryArena arena = &ImagingDefaultArena;
+
     v = PyLong_FromLong(arena->stats_new_count);
     PyDict_SetItemString(d, "new_count", v ? v : Py_None);
     Py_XDECREF(v);
@@ -3884,22 +3957,25 @@ _get_stats(PyObject *self, PyObject *args) {
     v = PyLong_FromLong(arena->blocks_cached);
     PyDict_SetItemString(d, "blocks_cached", v ? v : Py_None);
     Py_XDECREF(v);
+
+    MUTEX_UNLOCK(&ImagingDefaultArena.mutex);
     return d;
 }
 
 static PyObject *
 _reset_stats(PyObject *self, PyObject *args) {
-    ImagingMemoryArena arena = &ImagingDefaultArena;
-
     if (!PyArg_ParseTuple(args, ":reset_stats")) {
         return NULL;
     }
 
+    MUTEX_LOCK(&ImagingDefaultArena.mutex);
+    ImagingMemoryArena arena = &ImagingDefaultArena;
     arena->stats_new_count = 0;
     arena->stats_allocated_blocks = 0;
     arena->stats_reused_blocks = 0;
     arena->stats_reallocated_blocks = 0;
     arena->stats_freed_blocks = 0;
+    MUTEX_UNLOCK(&ImagingDefaultArena.mutex);
 
     Py_INCREF(Py_None);
     return Py_None;
@@ -3911,7 +3987,10 @@ _get_alignment(PyObject *self, PyObject *args) {
         return NULL;
     }
 
-    return PyLong_FromLong(ImagingDefaultArena.alignment);
+    MUTEX_LOCK(&ImagingDefaultArena.mutex);
+    int alignment = ImagingDefaultArena.alignment;
+    MUTEX_UNLOCK(&ImagingDefaultArena.mutex);
+    return PyLong_FromLong(alignment);
 }
 
 static PyObject *
@@ -3920,7 +3999,10 @@ _get_block_size(PyObject *self, PyObject *args) {
         return NULL;
     }
 
-    return PyLong_FromLong(ImagingDefaultArena.block_size);
+    MUTEX_LOCK(&ImagingDefaultArena.mutex);
+    int block_size = ImagingDefaultArena.block_size;
+    MUTEX_UNLOCK(&ImagingDefaultArena.mutex);
+    return PyLong_FromLong(block_size);
 }
 
 static PyObject *
@@ -3929,7 +4011,10 @@ _get_blocks_max(PyObject *self, PyObject *args) {
         return NULL;
     }
 
-    return PyLong_FromLong(ImagingDefaultArena.blocks_max);
+    MUTEX_LOCK(&ImagingDefaultArena.mutex);
+    int blocks_max = ImagingDefaultArena.blocks_max;
+    MUTEX_UNLOCK(&ImagingDefaultArena.mutex);
+    return PyLong_FromLong(blocks_max);
 }
 
 static PyObject *
@@ -3949,7 +4034,9 @@ _set_alignment(PyObject *self, PyObject *args) {
         return NULL;
     }
 
+    MUTEX_LOCK(&ImagingDefaultArena.mutex);
     ImagingDefaultArena.alignment = alignment;
+    MUTEX_UNLOCK(&ImagingDefaultArena.mutex);
 
     Py_INCREF(Py_None);
     return Py_None;
@@ -3972,7 +4059,9 @@ _set_block_size(PyObject *self, PyObject *args) {
         return NULL;
     }
 
+    MUTEX_LOCK(&ImagingDefaultArena.mutex);
     ImagingDefaultArena.block_size = block_size;
+    MUTEX_UNLOCK(&ImagingDefaultArena.mutex);
 
     Py_INCREF(Py_None);
     return Py_None;
@@ -3988,14 +4077,18 @@ _set_blocks_max(PyObject *self, PyObject *args) {
     if (blocks_max < 0) {
         PyErr_SetString(PyExc_ValueError, "blocks_max should be greater than 0");
         return NULL;
-    } else if (
-        (unsigned long)blocks_max >
+    }
+
+    if ((unsigned long)blocks_max >
         SIZE_MAX / sizeof(ImagingDefaultArena.blocks_pool[0])) {
         PyErr_SetString(PyExc_ValueError, "blocks_max is too large");
         return NULL;
     }
 
-    if (!ImagingMemorySetBlocksMax(&ImagingDefaultArena, blocks_max)) {
+    MUTEX_LOCK(&ImagingDefaultArena.mutex);
+    int status = ImagingMemorySetBlocksMax(&ImagingDefaultArena, blocks_max);
+    MUTEX_UNLOCK(&ImagingDefaultArena.mutex);
+    if (!status) {
         return ImagingError_MemoryError();
     }
 
@@ -4011,7 +4104,9 @@ _clear_cache(PyObject *self, PyObject *args) {
         return NULL;
     }
 
+    MUTEX_LOCK(&ImagingDefaultArena.mutex);
     ImagingMemoryClearCache(&ImagingDefaultArena, i);
+    MUTEX_UNLOCK(&ImagingDefaultArena.mutex);
 
     Py_INCREF(Py_None);
     return Py_None;
@@ -4120,6 +4215,7 @@ static PyMethodDef functions[] = {
     {"blend", (PyCFunction)_blend, METH_VARARGS},
     {"fill", (PyCFunction)_fill, METH_VARARGS},
     {"new", (PyCFunction)_new, METH_VARARGS},
+    {"new_block", (PyCFunction)_new_block, METH_VARARGS},
     {"merge", (PyCFunction)_merge, METH_VARARGS},
 
     /* Functions */
@@ -4163,13 +4259,11 @@ static PyMethodDef functions[] = {
     {"zip_encoder", (PyCFunction)PyImaging_ZipEncoderNew, METH_VARARGS},
 #endif
 
-/* Memory mapping */
-#ifdef WITH_MAPPING
+    /* Memory mapping */
     {"map_buffer", (PyCFunction)PyImaging_MapBuffer, METH_VARARGS},
-#endif
 
-/* Display support */
 #ifdef _WIN32
+    /* Display support */
     {"display", (PyCFunction)PyImaging_DisplayWin32, METH_VARARGS},
     {"display_mode", (PyCFunction)PyImaging_DisplayModeWin32, METH_VARARGS},
     {"grabscreen_win32", (PyCFunction)PyImaging_GrabScreenWin32, METH_VARARGS},
@@ -4185,30 +4279,22 @@ static PyMethodDef functions[] = {
     /* Utilities */
     {"getcodecstatus", (PyCFunction)_getcodecstatus, METH_VARARGS},
 
-/* Special effects (experimental) */
-#ifdef WITH_EFFECTS
+    /* Special effects (experimental) */
     {"effect_mandelbrot", (PyCFunction)_effect_mandelbrot, METH_VARARGS},
     {"effect_noise", (PyCFunction)_effect_noise, METH_VARARGS},
     {"linear_gradient", (PyCFunction)_linear_gradient, METH_VARARGS},
     {"radial_gradient", (PyCFunction)_radial_gradient, METH_VARARGS},
     {"wedge", (PyCFunction)_linear_gradient, METH_VARARGS}, /* Compatibility */
-#endif
 
-/* Drawing support stuff */
-#ifdef WITH_IMAGEDRAW
+    /* Drawing support stuff */
     {"font", (PyCFunction)_font_new, METH_VARARGS},
     {"draw", (PyCFunction)_draw_new, METH_VARARGS},
-#endif
 
-/* Experimental path stuff */
-#ifdef WITH_IMAGEPATH
+    /* Experimental path stuff */
     {"path", (PyCFunction)PyPath_Create, METH_VARARGS},
-#endif
 
-/* Experimental arrow graphics stuff */
-#ifdef WITH_ARROW
+    /* Experimental arrow graphics stuff */
     {"outline", (PyCFunction)PyOutline_Create, METH_VARARGS},
-#endif
 
     /* Resource management */
     {"get_stats", (PyCFunction)_get_stats, METH_VARARGS},
@@ -4233,16 +4319,12 @@ setup_module(PyObject *m) {
     if (PyType_Ready(&Imaging_Type) < 0) {
         return -1;
     }
-
-#ifdef WITH_IMAGEDRAW
     if (PyType_Ready(&ImagingFont_Type) < 0) {
         return -1;
     }
-
     if (PyType_Ready(&ImagingDraw_Type) < 0) {
         return -1;
     }
-#endif
     if (PyType_Ready(&PixelAccess_Type) < 0) {
         return -1;
     }
@@ -4344,7 +4426,9 @@ setup_module(PyObject *m) {
     PyModule_AddObject(m, "HAVE_XCB", have_xcb);
 
     PyObject *pillow_version = PyUnicode_FromString(version);
-    PyDict_SetItemString(d, "PILLOW_VERSION", pillow_version ? pillow_version : Py_None);
+    PyDict_SetItemString(
+        d, "PILLOW_VERSION", pillow_version ? pillow_version : Py_None
+    );
     Py_XDECREF(pillow_version);
 
     return 0;
@@ -4369,5 +4453,9 @@ PyInit__imaging(void) {
         return NULL;
     }
 
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     return m;
 }
diff --git a/src/_imagingcms.c b/src/_imagingcms.c
index ddfe6ad64..1823bcf03 100644
--- a/src/_imagingcms.c
+++ b/src/_imagingcms.c
@@ -52,7 +52,7 @@ https://www.cazabon.com\n\
 
 */
 
-/* known to-do list with current version:
+/* known to-do list:
 
    Verify that PILmode->littleCMStype conversion in findLCMStype is correct for all
    PIL modes (it probably isn't for the more obscure ones)
@@ -143,7 +143,7 @@ cms_profile_tobytes(PyObject *self, PyObject *args) {
     cmsHPROFILE *profile;
 
     PyObject *ret;
-    if (!PyArg_ParseTuple(args, "O", &CmsProfile)) {
+    if (!PyArg_ParseTuple(args, "O!", &CmsProfile_Type, &CmsProfile)) {
         return NULL;
     }
 
@@ -181,9 +181,7 @@ cms_profile_dealloc(CmsProfileObject *self) {
 /* a transform represents the mapping between two profiles */
 
 typedef struct {
-    PyObject_HEAD char mode_in[8];
-    char mode_out[8];
-    cmsHTRANSFORM transform;
+    PyObject_HEAD cmsHTRANSFORM transform;
 } CmsTransformObject;
 
 static PyTypeObject CmsTransform_Type;
@@ -191,7 +189,7 @@ static PyTypeObject CmsTransform_Type;
 #define CmsTransform_Check(op) (Py_TYPE(op) == &CmsTransform_Type)
 
 static PyObject *
-cms_transform_new(cmsHTRANSFORM transform, char *mode_in, char *mode_out) {
+cms_transform_new(cmsHTRANSFORM transform) {
     CmsTransformObject *self;
 
     self = PyObject_New(CmsTransformObject, &CmsTransform_Type);
@@ -201,9 +199,6 @@ cms_transform_new(cmsHTRANSFORM transform, char *mode_in, char *mode_out) {
 
     self->transform = transform;
 
-    strcpy(self->mode_in, mode_in);
-    strcpy(self->mode_out, mode_out);
-
     return (PyObject *)self;
 }
 
@@ -218,35 +213,33 @@ cms_transform_dealloc(CmsTransformObject *self) {
 
 static cmsUInt32Number
 findLCMStype(char *PILmode) {
-    if (strcmp(PILmode, "RGB") == 0) {
+    if (strcmp(PILmode, "RGB") == 0 || strcmp(PILmode, "RGBA") == 0 ||
+        strcmp(PILmode, "RGBX") == 0) {
         return TYPE_RGBA_8;
-    } else if (strcmp(PILmode, "RGBA") == 0) {
-        return TYPE_RGBA_8;
-    } else if (strcmp(PILmode, "RGBX") == 0) {
-        return TYPE_RGBA_8;
-    } else if (strcmp(PILmode, "RGBA;16B") == 0) {
+    }
+    if (strcmp(PILmode, "RGBA;16B") == 0) {
         return TYPE_RGBA_16;
-    } else if (strcmp(PILmode, "CMYK") == 0) {
+    }
+    if (strcmp(PILmode, "CMYK") == 0) {
         return TYPE_CMYK_8;
-    } else if (strcmp(PILmode, "L") == 0) {
-        return TYPE_GRAY_8;
-    } else if (strcmp(PILmode, "L;16") == 0) {
+    }
+    if (strcmp(PILmode, "I;16") == 0 || strcmp(PILmode, "I;16L") == 0 ||
+        strcmp(PILmode, "L;16") == 0) {
         return TYPE_GRAY_16;
-    } else if (strcmp(PILmode, "L;16B") == 0) {
+    }
+    if (strcmp(PILmode, "I;16B") == 0 || strcmp(PILmode, "L;16B") == 0) {
         return TYPE_GRAY_16_SE;
-    } else if (strcmp(PILmode, "YCCA") == 0) {
+    }
+    if (strcmp(PILmode, "YCbCr") == 0 || strcmp(PILmode, "YCCA") == 0 ||
+        strcmp(PILmode, "YCC") == 0) {
         return TYPE_YCbCr_8;
-    } else if (strcmp(PILmode, "YCC") == 0) {
-        return TYPE_YCbCr_8;
-    } else if (strcmp(PILmode, "LAB") == 0) {
+    }
+    if (strcmp(PILmode, "LAB") == 0) {
         // LabX equivalent like ALab, but not reversed -- no #define in lcms2
         return (COLORSPACE_SH(PT_LabV2) | CHANNELS_SH(3) | BYTES_SH(1) | EXTRA_SH(1));
     }
-
-    else {
-        /* take a wild guess... but you probably should fail instead. */
-        return TYPE_GRAY_8; /* so there's no buffer overrun... */
-    }
+    /* presume "1" or "L" by default */
+    return TYPE_GRAY_8;
 }
 
 #define Cms_Min(a, b) ((a) < (b) ? (a) : (b))
@@ -338,7 +331,8 @@ pyCMScopyAux(cmsHTRANSFORM hTransform, Imaging imDst, const Imaging imSrc) {
                 memcpy(
                     pDstExtras + x * dstChunkSize,
                     pSrcExtras + x * srcChunkSize,
-                    channelSize);
+                    channelSize
+                );
             }
         }
     }
@@ -380,7 +374,8 @@ _buildTransform(
     char *sInMode,
     char *sOutMode,
     int iRenderingIntent,
-    cmsUInt32Number cmsFLAGS) {
+    cmsUInt32Number cmsFLAGS
+) {
     cmsHTRANSFORM hTransform;
 
     Py_BEGIN_ALLOW_THREADS
@@ -392,11 +387,12 @@ _buildTransform(
             hOutputProfile,
             findLCMStype(sOutMode),
             iRenderingIntent,
-            cmsFLAGS);
+            cmsFLAGS
+        );
 
-    Py_END_ALLOW_THREADS
+    Py_END_ALLOW_THREADS;
 
-        if (!hTransform) {
+    if (!hTransform) {
         PyErr_SetString(PyExc_ValueError, "cannot build transform");
     }
 
@@ -412,7 +408,8 @@ _buildProofTransform(
     char *sOutMode,
     int iRenderingIntent,
     int iProofIntent,
-    cmsUInt32Number cmsFLAGS) {
+    cmsUInt32Number cmsFLAGS
+) {
     cmsHTRANSFORM hTransform;
 
     Py_BEGIN_ALLOW_THREADS
@@ -426,11 +423,12 @@ _buildProofTransform(
             hProofProfile,
             iRenderingIntent,
             iProofIntent,
-            cmsFLAGS);
+            cmsFLAGS
+        );
 
-    Py_END_ALLOW_THREADS
+    Py_END_ALLOW_THREADS;
 
-        if (!hTransform) {
+    if (!hTransform) {
         PyErr_SetString(PyExc_ValueError, "cannot build proof transform");
     }
 
@@ -461,7 +459,8 @@ buildTransform(PyObject *self, PyObject *args) {
             &sInMode,
             &sOutMode,
             &iRenderingIntent,
-            &cmsFLAGS)) {
+            &cmsFLAGS
+        )) {
         return NULL;
     }
 
@@ -471,13 +470,14 @@ buildTransform(PyObject *self, PyObject *args) {
         sInMode,
         sOutMode,
         iRenderingIntent,
-        cmsFLAGS);
+        cmsFLAGS
+    );
 
     if (!transform) {
         return NULL;
     }
 
-    return cms_transform_new(transform, sInMode, sOutMode);
+    return cms_transform_new(transform);
 }
 
 static PyObject *
@@ -506,7 +506,8 @@ buildProofTransform(PyObject *self, PyObject *args) {
             &sOutMode,
             &iRenderingIntent,
             &iProofIntent,
-            &cmsFLAGS)) {
+            &cmsFLAGS
+        )) {
         return NULL;
     }
 
@@ -518,34 +519,36 @@ buildProofTransform(PyObject *self, PyObject *args) {
         sOutMode,
         iRenderingIntent,
         iProofIntent,
-        cmsFLAGS);
+        cmsFLAGS
+    );
 
     if (!transform) {
         return NULL;
     }
 
-    return cms_transform_new(transform, sInMode, sOutMode);
+    return cms_transform_new(transform);
 }
 
 static PyObject *
 cms_transform_apply(CmsTransformObject *self, PyObject *args) {
-    Py_ssize_t idIn;
-    Py_ssize_t idOut;
+    PyObject *i0, *i1;
     Imaging im;
     Imaging imOut;
 
-    int result;
-
-    if (!PyArg_ParseTuple(args, "nn:apply", &idIn, &idOut)) {
+    if (!PyArg_ParseTuple(args, "OO:apply", &i0, &i1)) {
         return NULL;
     }
 
-    im = (Imaging)idIn;
-    imOut = (Imaging)idOut;
+    if (!PyCapsule_IsValid(i0, IMAGING_MAGIC) ||
+        !PyCapsule_IsValid(i1, IMAGING_MAGIC)) {
+        PyErr_Format(PyExc_TypeError, "Expected '%s' Capsule", IMAGING_MAGIC);
+        return NULL;
+    }
 
-    result = pyCMSdoTransform(im, imOut, self->transform);
+    im = (Imaging)PyCapsule_GetPointer(i0, IMAGING_MAGIC);
+    imOut = (Imaging)PyCapsule_GetPointer(i1, IMAGING_MAGIC);
 
-    return Py_BuildValue("i", result);
+    return Py_BuildValue("i", pyCMSdoTransform(im, imOut, self->transform));
 }
 
 /* -------------------------------------------------------------------- */
@@ -570,7 +573,8 @@ createProfile(PyObject *self, PyObject *args) {
                 PyErr_SetString(
                     PyExc_ValueError,
                     "ERROR: Could not calculate white point from color temperature "
-                    "provided, must be float in degrees Kelvin");
+                    "provided, must be float in degrees Kelvin"
+                );
                 return NULL;
             }
             hProfile = cmsCreateLab2Profile(&whitePoint);
@@ -625,13 +629,14 @@ cms_profile_is_intent_supported(CmsProfileObject *self, PyObject *args) {
 static PyObject *
 cms_get_display_profile_win32(PyObject *self, PyObject *args) {
     char filename[MAX_PATH];
-    cmsUInt32Number filename_size;
+    DWORD filename_size;
     BOOL ok;
 
     HANDLE handle = 0;
     int is_dc = 0;
     if (!PyArg_ParseTuple(
-            args, "|" F_HANDLE "i:get_display_profile", &handle, &is_dc)) {
+            args, "|" F_HANDLE "i:get_display_profile", &handle, &is_dc
+        )) {
         return NULL;
     }
 
@@ -736,7 +741,8 @@ _xyz_py(cmsCIEXYZ *XYZ) {
     cmsCIExyY xyY;
     cmsXYZ2xyY(&xyY, XYZ);
     return Py_BuildValue(
-        "((d,d,d),(d,d,d))", XYZ->X, XYZ->Y, XYZ->Z, xyY.x, xyY.y, xyY.Y);
+        "((d,d,d),(d,d,d))", XYZ->X, XYZ->Y, XYZ->Z, xyY.x, xyY.y, xyY.Y
+    );
 }
 
 static PyObject *
@@ -765,7 +771,8 @@ _xyz3_py(cmsCIEXYZ *XYZ) {
         xyY[1].Y,
         xyY[2].x,
         xyY[2].y,
-        xyY[2].Y);
+        xyY[2].Y
+    );
 }
 
 static PyObject *
@@ -816,7 +823,8 @@ _profile_read_ciexyy_triple(CmsProfileObject *self, cmsTagSignature info) {
         triple->Green.Y,
         triple->Blue.x,
         triple->Blue.y,
-        triple->Blue.Y);
+        triple->Blue.Y
+    );
 }
 
 static PyObject *
@@ -880,7 +888,8 @@ _calculate_rgb_primaries(CmsProfileObject *self, cmsCIEXYZTRIPLE *result) {
         hXYZ,
         TYPE_XYZ_DBL,
         INTENT_RELATIVE_COLORIMETRIC,
-        cmsFLAGS_NOCACHE | cmsFLAGS_NOOPTIMIZE);
+        cmsFLAGS_NOCACHE | cmsFLAGS_NOOPTIMIZE
+    );
     cmsCloseProfile(hXYZ);
     if (hTransform == NULL) {
         return 0;
@@ -896,7 +905,8 @@ _check_intent(
     int clut,
     cmsHPROFILE hProfile,
     cmsUInt32Number Intent,
-    cmsUInt32Number UsedDirection) {
+    cmsUInt32Number UsedDirection
+) {
     if (clut) {
         return cmsIsCLUT(hProfile, Intent, UsedDirection);
     } else {
@@ -941,7 +951,8 @@ _is_intent_supported(CmsProfileObject *self, int clut) {
             _check_intent(clut, self->profile, intent, LCMS_USED_AS_OUTPUT) ? Py_True
                                                                             : Py_False,
             _check_intent(clut, self->profile, intent, LCMS_USED_AS_PROOF) ? Py_True
-                                                                           : Py_False);
+                                                                           : Py_False
+        );
         if (id == NULL || entry == NULL) {
             Py_XDECREF(id);
             Py_XDECREF(entry);
@@ -975,7 +986,8 @@ static PyMethodDef pyCMSdll_methods[] = {
     {"get_display_profile_win32", cms_get_display_profile_win32, METH_VARARGS},
 #endif
 
-    {NULL, NULL}};
+    {NULL, NULL}
+};
 
 static struct PyMethodDef cms_profile_methods[] = {
     {"is_intent_supported", (PyCFunction)cms_profile_is_intent_supported, METH_VARARGS},
@@ -1035,7 +1047,8 @@ cms_profile_getattr_creation_date(CmsProfileObject *self, void *closure) {
     }
 
     return PyDateTime_FromDateAndTime(
-        1900 + ct.tm_year, ct.tm_mon, ct.tm_mday, ct.tm_hour, ct.tm_min, ct.tm_sec, 0);
+        1900 + ct.tm_year, ct.tm_mon, ct.tm_mday, ct.tm_hour, ct.tm_min, ct.tm_sec, 0
+    );
 }
 
 static PyObject *
@@ -1113,13 +1126,15 @@ cms_profile_getattr_colorimetric_intent(CmsProfileObject *self, void *closure) {
 
 static PyObject *
 cms_profile_getattr_perceptual_rendering_intent_gamut(
-    CmsProfileObject *self, void *closure) {
+    CmsProfileObject *self, void *closure
+) {
     return _profile_read_signature(self, cmsSigPerceptualRenderingIntentGamutTag);
 }
 
 static PyObject *
 cms_profile_getattr_saturation_rendering_intent_gamut(
-    CmsProfileObject *self, void *closure) {
+    CmsProfileObject *self, void *closure
+) {
     return _profile_read_signature(self, cmsSigSaturationRenderingIntentGamutTag);
 }
 
@@ -1152,7 +1167,8 @@ cms_profile_getattr_blue_colorant(CmsProfileObject *self, void *closure) {
 
 static PyObject *
 cms_profile_getattr_media_white_point_temperature(
-    CmsProfileObject *self, void *closure) {
+    CmsProfileObject *self, void *closure
+) {
     cmsCIEXYZ *XYZ;
     cmsCIExyY xyY;
     cmsFloat64Number tempK;
@@ -1336,7 +1352,8 @@ cms_profile_getattr_icc_measurement_condition(CmsProfileObject *self, void *clos
         "flare",
         mc->Flare,
         "illuminant_type",
-        _illu_map(mc->IlluminantType));
+        _illu_map(mc->IlluminantType)
+    );
 }
 
 static PyObject *
@@ -1366,7 +1383,8 @@ cms_profile_getattr_icc_viewing_condition(CmsProfileObject *self, void *closure)
         vc->SurroundXYZ.Y,
         vc->SurroundXYZ.Z,
         "illuminant_type",
-        _illu_map(vc->IlluminantType));
+        _illu_map(vc->IlluminantType)
+    );
 }
 
 static struct PyGetSetDef cms_profile_getsetters[] = {
@@ -1414,26 +1432,27 @@ static struct PyGetSetDef cms_profile_getsetters[] = {
     {"colorant_table_out", (getter)cms_profile_getattr_colorant_table_out},
     {"intent_supported", (getter)cms_profile_getattr_is_intent_supported},
     {"clut", (getter)cms_profile_getattr_is_clut},
-    {"icc_measurement_condition",
-     (getter)cms_profile_getattr_icc_measurement_condition},
+    {"icc_measurement_condition", (getter)cms_profile_getattr_icc_measurement_condition
+    },
     {"icc_viewing_condition", (getter)cms_profile_getattr_icc_viewing_condition},
 
-    {NULL}};
+    {NULL}
+};
 
 static PyTypeObject CmsProfile_Type = {
-    PyVarObject_HEAD_INIT(NULL, 0) "PIL._imagingcms.CmsProfile", /*tp_name */
-    sizeof(CmsProfileObject),
-    0, /*tp_basicsize, tp_itemsize */
+    PyVarObject_HEAD_INIT(NULL, 0) "PIL.ImageCms.core.CmsProfile", /*tp_name*/
+    sizeof(CmsProfileObject),                                      /*tp_basicsize*/
+    0,                                                             /*tp_itemsize*/
     /* methods */
     (destructor)cms_profile_dealloc, /*tp_dealloc*/
-    0,                               /*tp_print*/
+    0,                               /*tp_vectorcall_offset*/
     0,                               /*tp_getattr*/
     0,                               /*tp_setattr*/
-    0,                               /*tp_compare*/
+    0,                               /*tp_as_async*/
     0,                               /*tp_repr*/
-    0,                               /*tp_as_number */
-    0,                               /*tp_as_sequence */
-    0,                               /*tp_as_mapping */
+    0,                               /*tp_as_number*/
+    0,                               /*tp_as_sequence*/
+    0,                               /*tp_as_mapping*/
     0,                               /*tp_hash*/
     0,                               /*tp_call*/
     0,                               /*tp_str*/
@@ -1457,35 +1476,20 @@ static struct PyMethodDef cms_transform_methods[] = {
     {"apply", (PyCFunction)cms_transform_apply, 1}, {NULL, NULL} /* sentinel */
 };
 
-static PyObject *
-cms_transform_getattr_inputMode(CmsTransformObject *self, void *closure) {
-    return PyUnicode_FromString(self->mode_in);
-}
-
-static PyObject *
-cms_transform_getattr_outputMode(CmsTransformObject *self, void *closure) {
-    return PyUnicode_FromString(self->mode_out);
-}
-
-static struct PyGetSetDef cms_transform_getsetters[] = {
-    {"inputMode", (getter)cms_transform_getattr_inputMode},
-    {"outputMode", (getter)cms_transform_getattr_outputMode},
-    {NULL}};
-
 static PyTypeObject CmsTransform_Type = {
-    PyVarObject_HEAD_INIT(NULL, 0) "CmsTransform",
-    sizeof(CmsTransformObject),
-    0,
+    PyVarObject_HEAD_INIT(NULL, 0) "PIL.ImageCms.core.CmsTransform", /*tp_name*/
+    sizeof(CmsTransformObject),                                      /*tp_basicsize*/
+    0,                                                               /*tp_itemsize*/
     /* methods */
     (destructor)cms_transform_dealloc, /*tp_dealloc*/
-    0,                                 /*tp_print*/
+    0,                                 /*tp_vectorcall_offset*/
     0,                                 /*tp_getattr*/
     0,                                 /*tp_setattr*/
-    0,                                 /*tp_compare*/
+    0,                                 /*tp_as_async*/
     0,                                 /*tp_repr*/
-    0,                                 /*tp_as_number */
-    0,                                 /*tp_as_sequence */
-    0,                                 /*tp_as_mapping */
+    0,                                 /*tp_as_number*/
+    0,                                 /*tp_as_sequence*/
+    0,                                 /*tp_as_mapping*/
     0,                                 /*tp_hash*/
     0,                                 /*tp_call*/
     0,                                 /*tp_str*/
@@ -1502,7 +1506,7 @@ static PyTypeObject CmsTransform_Type = {
     0,                                 /*tp_iternext*/
     cms_transform_methods,             /*tp_methods*/
     0,                                 /*tp_members*/
-    cms_transform_getsetters,          /*tp_getset*/
+    0,                                 /*tp_getset*/
 };
 
 static int
@@ -1511,8 +1515,6 @@ setup_module(PyObject *m) {
     PyObject *v;
     int vn;
 
-    CmsProfile_Type.tp_new = PyType_GenericNew;
-
     /* Ready object types */
     PyType_Ready(&CmsProfile_Type);
     PyType_Ready(&CmsTransform_Type);
@@ -1520,6 +1522,9 @@ setup_module(PyObject *m) {
     Py_INCREF(&CmsProfile_Type);
     PyModule_AddObject(m, "CmsProfile", (PyObject *)&CmsProfile_Type);
 
+    Py_INCREF(&CmsTransform_Type);
+    PyModule_AddObject(m, "CmsTransform", (PyObject *)&CmsTransform_Type);
+
     d = PyModule_GetDict(m);
 
     /* this check is also in PIL.features.pilinfo() */
@@ -1559,5 +1564,9 @@ PyInit__imagingcms(void) {
 
     PyDateTime_IMPORT;
 
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     return m;
 }
diff --git a/src/_imagingft.c b/src/_imagingft.c
index 6cee021d4..d38279f3e 100644
--- a/src/_imagingft.c
+++ b/src/_imagingft.c
@@ -20,6 +20,7 @@
 
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
+#include "thirdparty/pythoncapi_compat.h"
 #include "libImaging/Imaging.h"
 
 #include <ft2build.h>
@@ -47,17 +48,17 @@
     ;
 
 #ifdef HAVE_RAQM
-# ifdef HAVE_RAQM_SYSTEM
-#  include <raqm.h>
-# else
-#  include "thirdparty/raqm/raqm.h"
-#  ifdef HAVE_FRIBIDI_SYSTEM
-#   include <fribidi.h>
-#  else
-#   include "thirdparty/fribidi-shim/fribidi.h"
-#   include <hb.h>
-#  endif
-# endif
+#ifdef HAVE_RAQM_SYSTEM
+#include <raqm.h>
+#else
+#include "thirdparty/raqm/raqm.h"
+#ifdef HAVE_FRIBIDI_SYSTEM
+#include <fribidi.h>
+#else
+#include "thirdparty/fribidi-shim/fribidi.h"
+#include <hb.h>
+#endif
+#endif
 #endif
 
 static int have_raqm = 0;
@@ -81,6 +82,9 @@ struct {
     /* font objects */
 
     static FT_Library library;
+#ifdef Py_GIL_DISABLED
+static PyMutex ft_library_mutex;
+#endif
 
 typedef struct {
     PyObject_HEAD FT_Face face;
@@ -125,7 +129,8 @@ getfont(PyObject *self_, PyObject *args, PyObject *kw) {
     unsigned char *font_bytes;
     Py_ssize_t font_bytes_size = 0;
     static char *kwlist[] = {
-        "filename", "size", "index", "encoding", "font_bytes", "layout_engine", NULL};
+        "filename", "size", "index", "encoding", "font_bytes", "layout_engine", NULL
+    };
 
     if (!library) {
         PyErr_SetString(PyExc_OSError, "failed to initialize FreeType library");
@@ -147,7 +152,8 @@ getfont(PyObject *self_, PyObject *args, PyObject *kw) {
             &encoding,
             &font_bytes,
             &font_bytes_size,
-            &layout_engine)) {
+            &layout_engine
+        )) {
         PyConfig_Clear(&config);
         return NULL;
     }
@@ -165,7 +171,8 @@ getfont(PyObject *self_, PyObject *args, PyObject *kw) {
             &encoding,
             &font_bytes,
             &font_bytes_size,
-            &layout_engine)) {
+            &layout_engine
+        )) {
         return NULL;
     }
 #endif
@@ -183,7 +190,9 @@ getfont(PyObject *self_, PyObject *args, PyObject *kw) {
 
     if (filename && font_bytes_size <= 0) {
         self->font_bytes = NULL;
+        MUTEX_LOCK(&ft_library_mutex);
         error = FT_New_Face(library, filename, index, &self->face);
+        MUTEX_UNLOCK(&ft_library_mutex);
     } else {
         /* need to have allocated storage for font_bytes for the life of the object.*/
         /* Don't free this before FT_Done_Face */
@@ -193,12 +202,15 @@ getfont(PyObject *self_, PyObject *args, PyObject *kw) {
         }
         if (!error) {
             memcpy(self->font_bytes, font_bytes, (size_t)font_bytes_size);
+            MUTEX_LOCK(&ft_library_mutex);
             error = FT_New_Memory_Face(
                 library,
                 (FT_Byte *)self->font_bytes,
                 font_bytes_size,
                 index,
-                &self->face);
+                &self->face
+            );
+            MUTEX_UNLOCK(&ft_library_mutex);
         }
     }
 
@@ -233,18 +245,6 @@ getfont(PyObject *self_, PyObject *args, PyObject *kw) {
     return (PyObject *)self;
 }
 
-static int
-font_getchar(PyObject *string, int index, FT_ULong *char_out) {
-    if (PyUnicode_Check(string)) {
-        if (index >= PyUnicode_GET_LENGTH(string)) {
-            return 0;
-        }
-        *char_out = PyUnicode_READ_CHAR(string, index);
-        return 1;
-    }
-    return 0;
-}
-
 #ifdef HAVE_RAQM
 
 static size_t
@@ -254,7 +254,8 @@ text_layout_raqm(
     const char *dir,
     PyObject *features,
     const char *lang,
-    GlyphInfo **glyph_info) {
+    GlyphInfo **glyph_info
+) {
     size_t i = 0, count = 0, start = 0;
     raqm_t *rq;
     raqm_glyph_t *glyphs = NULL;
@@ -266,28 +267,37 @@ text_layout_raqm(
         goto failed;
     }
 
+    Py_ssize_t size;
+    int set_text;
     if (PyUnicode_Check(string)) {
         Py_UCS4 *text = PyUnicode_AsUCS4Copy(string);
-        Py_ssize_t size = PyUnicode_GET_LENGTH(string);
+        size = PyUnicode_GET_LENGTH(string);
         if (!text || !size) {
             /* return 0 and clean up, no glyphs==no size,
                and raqm fails with empty strings */
             goto failed;
         }
-        int set_text = raqm_set_text(rq, text, size);
+        set_text = raqm_set_text(rq, text, size);
         PyMem_Free(text);
-        if (!set_text) {
-            PyErr_SetString(PyExc_ValueError, "raqm_set_text() failed");
+    } else if (PyBytes_Check(string)) {
+        char *buffer;
+        PyBytes_AsStringAndSize(string, &buffer, &size);
+        if (!buffer || !size) {
+            /* return 0 and clean up, no glyphs==no size,
+               and raqm fails with empty strings */
             goto failed;
         }
-        if (lang) {
-            if (!raqm_set_language(rq, lang, start, size)) {
-                PyErr_SetString(PyExc_ValueError, "raqm_set_language() failed");
-                goto failed;
-            }
-        }
+        set_text = raqm_set_text_utf8(rq, buffer, size);
     } else {
-        PyErr_SetString(PyExc_TypeError, "expected string");
+        PyErr_SetString(PyExc_TypeError, "expected string or bytes");
+        goto failed;
+    }
+    if (!set_text) {
+        PyErr_SetString(PyExc_ValueError, "raqm_set_text() failed");
+        goto failed;
+    }
+    if (lang && !raqm_set_language(rq, lang, start, size)) {
+        PyErr_SetString(PyExc_ValueError, "raqm_set_language() failed");
         goto failed;
     }
 
@@ -302,13 +312,14 @@ text_layout_raqm(
 #if !defined(RAQM_VERSION_ATLEAST)
             /* RAQM_VERSION_ATLEAST was added in Raqm 0.7.0 */
             PyErr_SetString(
-                PyExc_ValueError,
-                "libraqm 0.7 or greater required for 'ttb' direction");
+                PyExc_ValueError, "libraqm 0.7 or greater required for 'ttb' direction"
+            );
             goto failed;
 #endif
         } else {
             PyErr_SetString(
-                PyExc_ValueError, "direction must be either 'rtl', 'ltr' or 'ttb'");
+                PyExc_ValueError, "direction must be either 'rtl', 'ltr' or 'ttb'"
+            );
             goto failed;
         }
     }
@@ -404,29 +415,31 @@ text_layout_fallback(
     const char *lang,
     GlyphInfo **glyph_info,
     int mask,
-    int color) {
-    int error, load_flags;
+    int color
+) {
+    int error, load_flags, i;
+    char *buffer = NULL;
     FT_ULong ch;
     Py_ssize_t count;
     FT_GlyphSlot glyph;
     FT_Bool kerning = FT_HAS_KERNING(self->face);
     FT_UInt last_index = 0;
-    int i;
 
     if (features != Py_None || dir != NULL || lang != NULL) {
         PyErr_SetString(
             PyExc_KeyError,
             "setting text direction, language or font features is not supported "
-            "without libraqm");
-    }
-    if (!PyUnicode_Check(string)) {
-        PyErr_SetString(PyExc_TypeError, "expected string");
-        return 0;
+            "without libraqm"
+        );
     }
 
-    count = 0;
-    while (font_getchar(string, count, &ch)) {
-        count++;
+    if (PyUnicode_Check(string)) {
+        count = PyUnicode_GET_LENGTH(string);
+    } else if (PyBytes_Check(string)) {
+        PyBytes_AsStringAndSize(string, &buffer, &count);
+    } else {
+        PyErr_SetString(PyExc_TypeError, "expected string or bytes");
+        return 0;
     }
     if (count == 0) {
         return 0;
@@ -445,7 +458,12 @@ text_layout_fallback(
     if (color) {
         load_flags |= FT_LOAD_COLOR;
     }
-    for (i = 0; font_getchar(string, i, &ch); i++) {
+    for (i = 0; i < count; i++) {
+        if (buffer) {
+            ch = buffer[i];
+        } else {
+            ch = PyUnicode_READ_CHAR(string, i);
+        }
         (*glyph_info)[i].index = FT_Get_Char_Index(self->face, ch);
         error = FT_Load_Glyph(self->face, (*glyph_info)[i].index, load_flags);
         if (error) {
@@ -462,7 +480,8 @@ text_layout_fallback(
                     last_index,
                     (*glyph_info)[i].index,
                     ft_kerning_default,
-                    &delta) == 0) {
+                    &delta
+                ) == 0) {
                 (*glyph_info)[i - 1].x_advance += PIXEL(delta.x);
                 (*glyph_info)[i - 1].y_advance += PIXEL(delta.y);
             }
@@ -486,17 +505,18 @@ text_layout(
     const char *lang,
     GlyphInfo **glyph_info,
     int mask,
-    int color) {
+    int color
+) {
     size_t count;
 #ifdef HAVE_RAQM
     if (have_raqm && self->layout_engine == LAYOUT_RAQM) {
-        count = text_layout_raqm(
-            string, self, dir, features, lang, glyph_info);
+        count = text_layout_raqm(string, self, dir, features, lang, glyph_info);
     } else
 #endif
     {
         count = text_layout_fallback(
-            string, self, dir, features, lang, glyph_info, mask, color);
+            string, self, dir, features, lang, glyph_info, mask, color
+        );
     }
     return count;
 }
@@ -518,7 +538,8 @@ font_getlength(FontObject *self, PyObject *args) {
     /* calculate size and bearing for a given string */
 
     if (!PyArg_ParseTuple(
-            args, "O|zzOz:getlength", &string, &mode, &dir, &features, &lang)) {
+            args, "O|zzOz:getlength", &string, &mode, &dir, &features, &lang
+        )) {
         return NULL;
     }
 
@@ -550,7 +571,18 @@ font_getlength(FontObject *self, PyObject *args) {
 }
 
 static int
-bounding_box_and_anchors(FT_Face face, const char *anchor, int horizontal_dir, GlyphInfo *glyph_info, size_t count, int load_flags, int *width, int *height, int *x_offset, int *y_offset) {
+bounding_box_and_anchors(
+    FT_Face face,
+    const char *anchor,
+    int horizontal_dir,
+    GlyphInfo *glyph_info,
+    size_t count,
+    int load_flags,
+    int *width,
+    int *height,
+    int *x_offset,
+    int *y_offset
+) {
     int position; /* pen position along primary axis, in 26.6 precision */
     int advanced; /* pen position along primary axis, in pixels */
     int px, py;   /* position of current glyph, in pixels */
@@ -558,8 +590,8 @@ bounding_box_and_anchors(FT_Face face, const char *anchor, int horizontal_dir, G
     int x_anchor, y_anchor;         /* offset of point drawn at (0, 0), in pixels */
     int error;
     FT_Glyph glyph;
-    FT_BBox bbox;                   /* glyph bounding box */
-    size_t i;                       /* glyph_info index */
+    FT_BBox bbox; /* glyph bounding box */
+    size_t i;     /* glyph_info index */
     /*
      * text bounds are given by:
      *   - bounding boxes of individual glyphs
@@ -654,9 +686,9 @@ bounding_box_and_anchors(FT_Face face, const char *anchor, int horizontal_dir, G
                     break;
                 case 'm':  // middle (ascender + descender) / 2
                     y_anchor = PIXEL(
-                        (face->size->metrics.ascender +
-                         face->size->metrics.descender) /
-                        2);
+                        (face->size->metrics.ascender + face->size->metrics.descender) /
+                        2
+                    );
                     break;
                 case 's':  // horizontal baseline
                     y_anchor = 0;
@@ -719,7 +751,7 @@ bad_anchor:
 static PyObject *
 font_getsize(FontObject *self, PyObject *args) {
     int width, height, x_offset, y_offset;
-    int load_flags;               /* FreeType load_flags parameter */
+    int load_flags; /* FreeType load_flags parameter */
     int error;
     GlyphInfo *glyph_info = NULL; /* computed text layout */
     size_t count;                 /* glyph_info length */
@@ -736,7 +768,8 @@ font_getsize(FontObject *self, PyObject *args) {
     /* calculate size and bearing for a given string */
 
     if (!PyArg_ParseTuple(
-            args, "O|zzOzz:getsize", &string, &mode, &dir, &features, &lang, &anchor)) {
+            args, "O|zzOzz:getsize", &string, &mode, &dir, &features, &lang, &anchor
+        )) {
         return NULL;
     }
 
@@ -758,7 +791,18 @@ font_getsize(FontObject *self, PyObject *args) {
         load_flags |= FT_LOAD_COLOR;
     }
 
-    error = bounding_box_and_anchors(self->face, anchor, horizontal_dir, glyph_info, count, load_flags, &width, &height, &x_offset, &y_offset);
+    error = bounding_box_and_anchors(
+        self->face,
+        anchor,
+        horizontal_dir,
+        glyph_info,
+        count,
+        load_flags,
+        &width,
+        &height,
+        &x_offset,
+        &y_offset
+    );
     if (glyph_info) {
         PyMem_Free(glyph_info);
         glyph_info = NULL;
@@ -767,12 +811,7 @@ font_getsize(FontObject *self, PyObject *args) {
         return NULL;
     }
 
-    return Py_BuildValue(
-        "(ii)(ii)",
-        width,
-        height,
-        x_offset,
-        y_offset);
+    return Py_BuildValue("(ii)(ii)", width, height, x_offset, y_offset);
 }
 
 static PyObject *
@@ -798,10 +837,9 @@ font_render(FontObject *self, PyObject *args) {
     unsigned char convert_scale;    /* scale factor for non-8bpp bitmaps */
     PyObject *image;
     Imaging im;
-    Py_ssize_t id;
     int mask = 0;  /* is FT_LOAD_TARGET_MONO enabled? */
     int color = 0; /* is FT_LOAD_COLOR enabled? */
-    int stroke_width = 0;
+    float stroke_width = 0;
     PY_LONG_LONG foreground_ink_long = 0;
     unsigned int foreground_ink;
     const char *mode = NULL;
@@ -815,14 +853,13 @@ font_render(FontObject *self, PyObject *args) {
     float y_start = 0;
     int width, height, x_offset, y_offset;
     int horizontal_dir; /* is primary axis horizontal? */
-    PyObject *max_image_pixels = Py_None;
 
     /* render string into given buffer (the buffer *must* have
        the right size, or this will crash) */
 
     if (!PyArg_ParseTuple(
             args,
-            "OO|zzOzizLffO:render",
+            "OO|zzOzfzLffO:render",
             &string,
             &fill,
             &mode,
@@ -833,8 +870,8 @@ font_render(FontObject *self, PyObject *args) {
             &anchor,
             &foreground_ink_long,
             &x_start,
-            &y_start,
-            &max_image_pixels)) {
+            &y_start
+        )) {
         return NULL;
     }
 
@@ -871,34 +908,39 @@ font_render(FontObject *self, PyObject *args) {
 
     horizontal_dir = dir && strcmp(dir, "ttb") == 0 ? 0 : 1;
 
-    error = bounding_box_and_anchors(self->face, anchor, horizontal_dir, glyph_info, count, load_flags, &width, &height, &x_offset, &y_offset);
+    error = bounding_box_and_anchors(
+        self->face,
+        anchor,
+        horizontal_dir,
+        glyph_info,
+        count,
+        load_flags,
+        &width,
+        &height,
+        &x_offset,
+        &y_offset
+    );
     if (error) {
         PyMem_Del(glyph_info);
         return NULL;
     }
 
-    width += stroke_width * 2 + ceil(x_start);
-    height += stroke_width * 2 + ceil(y_start);
-    if (max_image_pixels != Py_None) {
-        if ((long long)width * height > PyLong_AsLongLong(max_image_pixels) * 2) {
-            PyMem_Del(glyph_info);
-            return Py_BuildValue("O(ii)(ii)", Py_None, width, height, 0, 0);
-        }
-    }
-
-    image = PyObject_CallFunction(fill, "s(ii)", strcmp(mode, "RGBA") == 0 ? "RGBA" : "L", width, height);
+    width += ceil(stroke_width * 2 + x_start);
+    height += ceil(stroke_width * 2 + y_start);
+    image = PyObject_CallFunction(fill, "ii", width, height);
     if (image == NULL) {
         PyMem_Del(glyph_info);
         return NULL;
     }
-    id = PyLong_AsSsize_t(PyObject_GetAttrString(image, "id"));
-    im = (Imaging)id;
+    PyObject *imagePtr = PyObject_GetAttrString(image, "ptr");
+    im = (Imaging)PyCapsule_GetPointer(imagePtr, IMAGING_MAGIC);
+    Py_XDECREF(imagePtr);
 
-    x_offset -= stroke_width;
-    y_offset -= stroke_width;
+    x_offset = round(x_offset - stroke_width);
+    y_offset = round(y_offset - stroke_width);
     if (count == 0 || width == 0 || height == 0) {
         PyMem_Del(glyph_info);
-        return Py_BuildValue("O(ii)(ii)", image, width, height, x_offset, y_offset);
+        return Py_BuildValue("N(ii)", image, x_offset, y_offset);
     }
 
     if (stroke_width) {
@@ -910,10 +952,11 @@ font_render(FontObject *self, PyObject *args) {
 
         FT_Stroker_Set(
             stroker,
-            (FT_Fixed)stroke_width * 64,
+            (FT_Fixed)round(stroke_width * 64),
             FT_STROKER_LINECAP_ROUND,
             FT_STROKER_LINEJOIN_ROUND,
-            0);
+            0
+        );
     }
 
     /*
@@ -947,8 +990,8 @@ font_render(FontObject *self, PyObject *args) {
     }
 
     /* set pen position to text origin */
-    x = (-x_min + stroke_width + x_start) * 64;
-    y = (-y_max + (-stroke_width) - y_start) * 64;
+    x = round((-x_min + stroke_width + x_start) * 64);
+    y = round((-y_max + (-stroke_width) - y_start) * 64);
 
     if (stroker == NULL) {
         load_flags |= FT_LOAD_RENDER;
@@ -1053,8 +1096,8 @@ font_render(FontObject *self, PyObject *args) {
             if (yy >= 0 && yy < im->ysize) {
                 /* blend this glyph into the buffer */
                 int k;
-                unsigned char v;
                 unsigned char *target;
+                unsigned int tmp;
                 if (color) {
                     /* target[RGB] returns the color, target[A] returns the mask */
                     /* target bands get split again in ImageDraw.text */
@@ -1065,34 +1108,83 @@ font_render(FontObject *self, PyObject *args) {
                 if (color && bitmap.pixel_mode == FT_PIXEL_MODE_BGRA) {
                     /* paste color glyph */
                     for (k = x0; k < x1; k++) {
-                        if (target[k * 4 + 3] < source[k * 4 + 3]) {
-                            /* unpremultiply BGRa to RGBA */
-                            target[k * 4 + 0] = CLIP8(
-                                (255 * (int)source[k * 4 + 2]) / source[k * 4 + 3]);
-                            target[k * 4 + 1] = CLIP8(
-                                (255 * (int)source[k * 4 + 1]) / source[k * 4 + 3]);
-                            target[k * 4 + 2] = CLIP8(
-                                (255 * (int)source[k * 4 + 0]) / source[k * 4 + 3]);
-                            target[k * 4 + 3] = source[k * 4 + 3];
+                        unsigned int src_alpha = source[k * 4 + 3];
+
+                        /* paste only if source has data */
+                        if (src_alpha > 0) {
+                            /* unpremultiply BGRa */
+                            int src_red =
+                                CLIP8((255 * (int)source[k * 4 + 2]) / src_alpha);
+                            int src_green =
+                                CLIP8((255 * (int)source[k * 4 + 1]) / src_alpha);
+                            int src_blue =
+                                CLIP8((255 * (int)source[k * 4 + 0]) / src_alpha);
+
+                            /* blend required if target has data */
+                            if (target[k * 4 + 3] > 0) {
+                                /* blend RGBA colors */
+                                target[k * 4 + 0] =
+                                    BLEND(src_alpha, target[k * 4 + 0], src_red, tmp);
+                                target[k * 4 + 1] =
+                                    BLEND(src_alpha, target[k * 4 + 1], src_green, tmp);
+                                target[k * 4 + 2] =
+                                    BLEND(src_alpha, target[k * 4 + 2], src_blue, tmp);
+                                target[k * 4 + 3] = CLIP8(
+                                    src_alpha +
+                                    MULDIV255(target[k * 4 + 3], (255 - src_alpha), tmp)
+                                );
+                            } else {
+                                /* paste unpremultiplied RGBA values */
+                                target[k * 4 + 0] = src_red;
+                                target[k * 4 + 1] = src_green;
+                                target[k * 4 + 2] = src_blue;
+                                target[k * 4 + 3] = src_alpha;
+                            }
                         }
                     }
                 } else if (bitmap.pixel_mode == FT_PIXEL_MODE_GRAY) {
                     if (color) {
                         unsigned char *ink = (unsigned char *)&foreground_ink;
                         for (k = x0; k < x1; k++) {
-                            v = source[k] * convert_scale;
-                            if (target[k * 4 + 3] < v) {
-                                target[k * 4 + 0] = ink[0];
-                                target[k * 4 + 1] = ink[1];
-                                target[k * 4 + 2] = ink[2];
-                                target[k * 4 + 3] = v;
+                            unsigned int src_alpha = source[k] * convert_scale;
+                            if (src_alpha > 0) {
+                                if (target[k * 4 + 3] > 0) {
+                                    target[k * 4 + 0] = BLEND(
+                                        src_alpha, target[k * 4 + 0], ink[0], tmp
+                                    );
+                                    target[k * 4 + 1] = BLEND(
+                                        src_alpha, target[k * 4 + 1], ink[1], tmp
+                                    );
+                                    target[k * 4 + 2] = BLEND(
+                                        src_alpha, target[k * 4 + 2], ink[2], tmp
+                                    );
+                                    target[k * 4 + 3] = CLIP8(
+                                        src_alpha +
+                                        MULDIV255(
+                                            target[k * 4 + 3], (255 - src_alpha), tmp
+                                        )
+                                    );
+                                } else {
+                                    target[k * 4 + 0] = ink[0];
+                                    target[k * 4 + 1] = ink[1];
+                                    target[k * 4 + 2] = ink[2];
+                                    target[k * 4 + 3] = src_alpha;
+                                }
                             }
                         }
                     } else {
                         for (k = x0; k < x1; k++) {
-                            v = source[k] * convert_scale;
-                            if (target[k] < v) {
-                                target[k] = v;
+                            unsigned int src_alpha = source[k] * convert_scale;
+                            if (src_alpha > 0) {
+                                target[k] =
+                                    target[k] > 0
+                                        ? CLIP8(
+                                              src_alpha +
+                                              MULDIV255(
+                                                  target[k], (255 - src_alpha), tmp
+                                              )
+                                          )
+                                        : src_alpha;
                             }
                         }
                     }
@@ -1115,15 +1207,10 @@ font_render(FontObject *self, PyObject *args) {
     }
     FT_Stroker_Done(stroker);
     PyMem_Del(glyph_info);
-    return Py_BuildValue("O(ii)(ii)", image, width, height, x_offset, y_offset);
+    return Py_BuildValue("N(ii)", image, x_offset, y_offset);
 
 glyph_error:
-    if (im->destroy) {
-        im->destroy(im);
-    }
-    if (im->image) {
-        free(im->image);
-    }
+    Py_DECREF(image);
     if (stroker != NULL) {
         FT_Done_Glyph(glyph);
     }
@@ -1157,30 +1244,49 @@ font_getvarnames(FontObject *self) {
         return NULL;
     }
 
+    int *list_names_filled = PyMem_Malloc(num_namedstyles * sizeof(int));
+    if (list_names_filled == NULL) {
+        Py_DECREF(list_names);
+        FT_Done_MM_Var(library, master);
+        return PyErr_NoMemory();
+    }
+
+    for (unsigned int i = 0; i < num_namedstyles; i++) {
+        list_names_filled[i] = 0;
+    }
+
     name_count = FT_Get_Sfnt_Name_Count(self->face);
     for (i = 0; i < name_count; i++) {
         error = FT_Get_Sfnt_Name(self->face, i, &name);
         if (error) {
+            PyMem_Free(list_names_filled);
             Py_DECREF(list_names);
             FT_Done_MM_Var(library, master);
             return geterror(error);
         }
 
         for (j = 0; j < num_namedstyles; j++) {
-            if (PyList_GetItem(list_names, j) != NULL) {
+            if (list_names_filled[j]) {
                 continue;
             }
 
             if (master->namedstyle[j].strid == name.name_id) {
                 list_name = Py_BuildValue("y#", name.string, name.string_len);
+                if (list_name == NULL) {
+                    PyMem_Free(list_names_filled);
+                    Py_DECREF(list_names);
+                    FT_Done_MM_Var(library, master);
+                    return NULL;
+                }
                 PyList_SetItem(list_names, j, list_name);
+                list_names_filled[j] = 1;
                 break;
             }
         }
     }
 
+    PyMem_Free(list_names_filled);
     FT_Done_MM_Var(library, master);
-
     return list_names;
 }
 
@@ -1237,8 +1343,14 @@ font_getvaraxes(FontObject *self) {
 
             if (name.name_id == axis.strid) {
                 axis_name = Py_BuildValue("y#", name.string, name.string_len);
-                PyDict_SetItemString(list_axis, "name", axis_name ? axis_name : Py_None);
-                Py_XDECREF(axis_name);
+                if (axis_name == NULL) {
+                    Py_DECREF(list_axis);
+                    Py_DECREF(list_axes);
+                    FT_Done_MM_Var(library, master);
+                    return NULL;
+                }
+                PyDict_SetItemString(list_axis, "name", axis_name);
+                Py_DECREF(axis_name);
                 break;
             }
         }
@@ -1287,12 +1399,17 @@ font_setvaraxes(FontObject *self, PyObject *args) {
     }
 
     num_coords = PyObject_Length(axes);
-    coords = (FT_Fixed*)malloc(num_coords * sizeof(FT_Fixed));
+    coords = (FT_Fixed *)malloc(num_coords * sizeof(FT_Fixed));
     if (coords == NULL) {
         return PyErr_NoMemory();
     }
     for (i = 0; i < num_coords; i++) {
-        item = PyList_GET_ITEM(axes, i);
+        item = PyList_GetItemRef(axes, i);
+        if (item == NULL) {
+            free(coords);
+            return NULL;
+        }
+
         if (PyFloat_Check(item)) {
             coord = PyFloat_AS_DOUBLE(item);
         } else if (PyLong_Check(item)) {
@@ -1300,10 +1417,12 @@ font_setvaraxes(FontObject *self, PyObject *args) {
         } else if (PyNumber_Check(item)) {
             coord = PyFloat_AsDouble(item);
         } else {
+            Py_DECREF(item);
             free(coords);
             PyErr_SetString(PyExc_TypeError, "list must contain numbers");
             return NULL;
         }
+        Py_DECREF(item);
         coords[i] = coord * 65536;
     }
 
@@ -1321,7 +1440,9 @@ font_setvaraxes(FontObject *self, PyObject *args) {
 static void
 font_dealloc(FontObject *self) {
     if (self->face) {
+        MUTEX_LOCK(&ft_library_mutex);
         FT_Done_Face(self->face);
+        MUTEX_UNLOCK(&ft_library_mutex);
     }
     if (self->font_bytes) {
         PyMem_Free(self->font_bytes);
@@ -1340,7 +1461,8 @@ static PyMethodDef font_methods[] = {
     {"setvarname", (PyCFunction)font_setvarname, METH_VARARGS},
     {"setvaraxes", (PyCFunction)font_setvaraxes, METH_VARARGS},
 #endif
-    {NULL, NULL}};
+    {NULL, NULL}
+};
 
 static PyObject *
 font_getattr_family(FontObject *self, void *closure) {
@@ -1397,22 +1519,23 @@ static struct PyGetSetDef font_getsetters[] = {
     {"x_ppem", (getter)font_getattr_x_ppem},
     {"y_ppem", (getter)font_getattr_y_ppem},
     {"glyphs", (getter)font_getattr_glyphs},
-    {NULL}};
+    {NULL}
+};
 
 static PyTypeObject Font_Type = {
-    PyVarObject_HEAD_INIT(NULL, 0) "Font",
-    sizeof(FontObject),
-    0,
+    PyVarObject_HEAD_INIT(NULL, 0) "Font", /*tp_name*/
+    sizeof(FontObject),                    /*tp_basicsize*/
+    0,                                     /*tp_itemsize*/
     /* methods */
-    (destructor)font_dealloc, /* tp_dealloc */
-    0,                        /* tp_print */
+    (destructor)font_dealloc, /*tp_dealloc*/
+    0,                        /*tp_vectorcall_offset*/
     0,                        /*tp_getattr*/
     0,                        /*tp_setattr*/
-    0,                        /*tp_compare*/
+    0,                        /*tp_as_async*/
     0,                        /*tp_repr*/
-    0,                        /*tp_as_number */
-    0,                        /*tp_as_sequence */
-    0,                        /*tp_as_mapping */
+    0,                        /*tp_as_number*/
+    0,                        /*tp_as_sequence*/
+    0,                        /*tp_as_mapping*/
     0,                        /*tp_hash*/
     0,                        /*tp_call*/
     0,                        /*tp_str*/
@@ -1433,7 +1556,8 @@ static PyTypeObject Font_Type = {
 };
 
 static PyMethodDef _functions[] = {
-    {"getfont", (PyCFunction)getfont, METH_VARARGS | METH_KEYWORDS}, {NULL, NULL}};
+    {"getfont", (PyCFunction)getfont, METH_VARARGS | METH_KEYWORDS}, {NULL, NULL}
+};
 
 static int
 setup_module(PyObject *m) {
@@ -1523,5 +1647,9 @@ PyInit__imagingft(void) {
         return NULL;
     }
 
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     return m;
 }
diff --git a/src/_imagingmath.c b/src/_imagingmath.c
index 067c165b2..dbe636707 100644
--- a/src/_imagingmath.c
+++ b/src/_imagingmath.c
@@ -23,6 +23,9 @@
 #define MAX_INT32 2147483647.0
 #define MIN_INT32 -2147483648.0
 
+#define MATH_FUNC_UNOP_MAGIC "Pillow Math unary func"
+#define MATH_FUNC_BINOP_MAGIC "Pillow Math binary func"
+
 #define UNOP(name, op, type)                   \
     void name(Imaging out, Imaging im1) {      \
         int x, y;                              \
@@ -168,15 +171,24 @@ _unop(PyObject *self, PyObject *args) {
     Imaging im1;
     void (*unop)(Imaging, Imaging);
 
-    Py_ssize_t op, i0, i1;
-    if (!PyArg_ParseTuple(args, "nnn", &op, &i0, &i1)) {
+    PyObject *op, *i0, *i1;
+    if (!PyArg_ParseTuple(args, "OOO", &op, &i0, &i1)) {
         return NULL;
     }
 
-    out = (Imaging)i0;
-    im1 = (Imaging)i1;
+    if (!PyCapsule_IsValid(op, MATH_FUNC_UNOP_MAGIC)) {
+        PyErr_Format(PyExc_TypeError, "Expected '%s' Capsule", MATH_FUNC_UNOP_MAGIC);
+        return NULL;
+    }
+    if (!PyCapsule_IsValid(i0, IMAGING_MAGIC) ||
+        !PyCapsule_IsValid(i1, IMAGING_MAGIC)) {
+        PyErr_Format(PyExc_TypeError, "Expected '%s' Capsule", IMAGING_MAGIC);
+        return NULL;
+    }
 
-    unop = (void *)op;
+    unop = (void *)PyCapsule_GetPointer(op, MATH_FUNC_UNOP_MAGIC);
+    out = (Imaging)PyCapsule_GetPointer(i0, IMAGING_MAGIC);
+    im1 = (Imaging)PyCapsule_GetPointer(i1, IMAGING_MAGIC);
 
     unop(out, im1);
 
@@ -191,16 +203,26 @@ _binop(PyObject *self, PyObject *args) {
     Imaging im2;
     void (*binop)(Imaging, Imaging, Imaging);
 
-    Py_ssize_t op, i0, i1, i2;
-    if (!PyArg_ParseTuple(args, "nnnn", &op, &i0, &i1, &i2)) {
+    PyObject *op, *i0, *i1, *i2;
+    if (!PyArg_ParseTuple(args, "OOOO", &op, &i0, &i1, &i2)) {
         return NULL;
     }
 
-    out = (Imaging)i0;
-    im1 = (Imaging)i1;
-    im2 = (Imaging)i2;
+    if (!PyCapsule_IsValid(op, MATH_FUNC_BINOP_MAGIC)) {
+        PyErr_Format(PyExc_TypeError, "Expected '%s' Capsule", MATH_FUNC_BINOP_MAGIC);
+        return NULL;
+    }
+    if (!PyCapsule_IsValid(i0, IMAGING_MAGIC) ||
+        !PyCapsule_IsValid(i1, IMAGING_MAGIC) ||
+        !PyCapsule_IsValid(i2, IMAGING_MAGIC)) {
+        PyErr_Format(PyExc_TypeError, "Expected '%s' Capsule", IMAGING_MAGIC);
+        return NULL;
+    }
 
-    binop = (void *)op;
+    binop = (void *)PyCapsule_GetPointer(op, MATH_FUNC_BINOP_MAGIC);
+    out = (Imaging)PyCapsule_GetPointer(i0, IMAGING_MAGIC);
+    im1 = (Imaging)PyCapsule_GetPointer(i1, IMAGING_MAGIC);
+    im2 = (Imaging)PyCapsule_GetPointer(i2, IMAGING_MAGIC);
 
     binop(out, im1, im2);
 
@@ -209,11 +231,21 @@ _binop(PyObject *self, PyObject *args) {
 }
 
 static PyMethodDef _functions[] = {
-    {"unop", _unop, 1}, {"binop", _binop, 1}, {NULL, NULL}};
+    {"unop", _unop, 1}, {"binop", _binop, 1}, {NULL, NULL}
+};
 
 static void
-install(PyObject *d, char *name, void *value) {
-    PyObject *v = PyLong_FromSsize_t((Py_ssize_t)value);
+install_unary(PyObject *d, char *name, void *func) {
+    PyObject *v = PyCapsule_New(func, MATH_FUNC_UNOP_MAGIC, NULL);
+    if (!v || PyDict_SetItemString(d, name, v)) {
+        PyErr_Clear();
+    }
+    Py_XDECREF(v);
+}
+
+static void
+install_binary(PyObject *d, char *name, void *func) {
+    PyObject *v = PyCapsule_New(func, MATH_FUNC_BINOP_MAGIC, NULL);
     if (!v || PyDict_SetItemString(d, name, v)) {
         PyErr_Clear();
     }
@@ -224,50 +256,50 @@ static int
 setup_module(PyObject *m) {
     PyObject *d = PyModule_GetDict(m);
 
-    install(d, "abs_I", abs_I);
-    install(d, "neg_I", neg_I);
-    install(d, "add_I", add_I);
-    install(d, "sub_I", sub_I);
-    install(d, "diff_I", diff_I);
-    install(d, "mul_I", mul_I);
-    install(d, "div_I", div_I);
-    install(d, "mod_I", mod_I);
-    install(d, "min_I", min_I);
-    install(d, "max_I", max_I);
-    install(d, "pow_I", pow_I);
+    install_unary(d, "abs_I", abs_I);
+    install_unary(d, "neg_I", neg_I);
+    install_binary(d, "add_I", add_I);
+    install_binary(d, "sub_I", sub_I);
+    install_binary(d, "diff_I", diff_I);
+    install_binary(d, "mul_I", mul_I);
+    install_binary(d, "div_I", div_I);
+    install_binary(d, "mod_I", mod_I);
+    install_binary(d, "min_I", min_I);
+    install_binary(d, "max_I", max_I);
+    install_binary(d, "pow_I", pow_I);
 
-    install(d, "invert_I", invert_I);
-    install(d, "and_I", and_I);
-    install(d, "or_I", or_I);
-    install(d, "xor_I", xor_I);
-    install(d, "lshift_I", lshift_I);
-    install(d, "rshift_I", rshift_I);
+    install_unary(d, "invert_I", invert_I);
+    install_binary(d, "and_I", and_I);
+    install_binary(d, "or_I", or_I);
+    install_binary(d, "xor_I", xor_I);
+    install_binary(d, "lshift_I", lshift_I);
+    install_binary(d, "rshift_I", rshift_I);
 
-    install(d, "eq_I", eq_I);
-    install(d, "ne_I", ne_I);
-    install(d, "lt_I", lt_I);
-    install(d, "le_I", le_I);
-    install(d, "gt_I", gt_I);
-    install(d, "ge_I", ge_I);
+    install_binary(d, "eq_I", eq_I);
+    install_binary(d, "ne_I", ne_I);
+    install_binary(d, "lt_I", lt_I);
+    install_binary(d, "le_I", le_I);
+    install_binary(d, "gt_I", gt_I);
+    install_binary(d, "ge_I", ge_I);
 
-    install(d, "abs_F", abs_F);
-    install(d, "neg_F", neg_F);
-    install(d, "add_F", add_F);
-    install(d, "sub_F", sub_F);
-    install(d, "diff_F", diff_F);
-    install(d, "mul_F", mul_F);
-    install(d, "div_F", div_F);
-    install(d, "mod_F", mod_F);
-    install(d, "min_F", min_F);
-    install(d, "max_F", max_F);
-    install(d, "pow_F", pow_F);
+    install_unary(d, "abs_F", abs_F);
+    install_unary(d, "neg_F", neg_F);
+    install_binary(d, "add_F", add_F);
+    install_binary(d, "sub_F", sub_F);
+    install_binary(d, "diff_F", diff_F);
+    install_binary(d, "mul_F", mul_F);
+    install_binary(d, "div_F", div_F);
+    install_binary(d, "mod_F", mod_F);
+    install_binary(d, "min_F", min_F);
+    install_binary(d, "max_F", max_F);
+    install_binary(d, "pow_F", pow_F);
 
-    install(d, "eq_F", eq_F);
-    install(d, "ne_F", ne_F);
-    install(d, "lt_F", lt_F);
-    install(d, "le_F", le_F);
-    install(d, "gt_F", gt_F);
-    install(d, "ge_F", ge_F);
+    install_binary(d, "eq_F", eq_F);
+    install_binary(d, "ne_F", ne_F);
+    install_binary(d, "lt_F", lt_F);
+    install_binary(d, "le_F", le_F);
+    install_binary(d, "gt_F", gt_F);
+    install_binary(d, "ge_F", ge_F);
 
     return 0;
 }
@@ -290,5 +322,9 @@ PyInit__imagingmath(void) {
         return NULL;
     }
 
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     return m;
 }
diff --git a/src/_imagingmorph.c b/src/_imagingmorph.c
index 8815c2b7e..b763e3a6f 100644
--- a/src/_imagingmorph.c
+++ b/src/_imagingmorph.c
@@ -11,7 +11,6 @@
  * See the README file for information on usage and redistribution.
  */
 
-#include "Python.h"
 #include "libImaging/Imaging.h"
 
 #define LUT_SIZE (1 << 9)
@@ -30,43 +29,36 @@
 static PyObject *
 apply(PyObject *self, PyObject *args) {
     const char *lut;
-    PyObject *py_lut;
-    Py_ssize_t lut_len, i0, i1;
+    Py_ssize_t lut_len;
+    PyObject *i0, *i1;
     Imaging imgin, imgout;
     int width, height;
     int row_idx, col_idx;
     UINT8 **inrows, **outrows;
     int num_changed_pixels = 0;
 
-    if (!PyArg_ParseTuple(args, "Onn", &py_lut, &i0, &i1)) {
-        PyErr_SetString(PyExc_RuntimeError, "Argument parsing problem");
+    if (!PyArg_ParseTuple(args, "s#OO", &lut, &lut_len, &i0, &i1)) {
         return NULL;
     }
 
-    if (!PyBytes_Check(py_lut)) {
-        PyErr_SetString(PyExc_RuntimeError, "The morphology LUT is not a bytes object");
-        return NULL;
-    }
-
-    lut_len = PyBytes_Size(py_lut);
-
     if (lut_len < LUT_SIZE) {
         PyErr_SetString(PyExc_RuntimeError, "The morphology LUT has the wrong size");
         return NULL;
     }
 
-    lut = PyBytes_AsString(py_lut);
+    if (!PyCapsule_IsValid(i0, IMAGING_MAGIC) ||
+        !PyCapsule_IsValid(i1, IMAGING_MAGIC)) {
+        PyErr_Format(PyExc_TypeError, "Expected '%s' Capsule", IMAGING_MAGIC);
+        return NULL;
+    }
 
-    imgin = (Imaging)i0;
-    imgout = (Imaging)i1;
+    imgin = (Imaging)PyCapsule_GetPointer(i0, IMAGING_MAGIC);
+    imgout = (Imaging)PyCapsule_GetPointer(i1, IMAGING_MAGIC);
     width = imgin->xsize;
     height = imgin->ysize;
 
-    if (imgin->type != IMAGING_TYPE_UINT8 || imgin->bands != 1) {
-        PyErr_SetString(PyExc_RuntimeError, "Unsupported image type");
-        return NULL;
-    }
-    if (imgout->type != IMAGING_TYPE_UINT8 || imgout->bands != 1) {
+    if (imgin->type != IMAGING_TYPE_UINT8 || imgin->bands != 1 ||
+        imgout->type != IMAGING_TYPE_UINT8 || imgout->bands != 1) {
         PyErr_SetString(PyExc_RuntimeError, "Unsupported image type");
         return NULL;
     }
@@ -129,46 +121,39 @@ apply(PyObject *self, PyObject *args) {
 static PyObject *
 match(PyObject *self, PyObject *args) {
     const char *lut;
-    PyObject *py_lut;
-    Py_ssize_t lut_len, i0;
+    Py_ssize_t lut_len;
+    PyObject *i0;
     Imaging imgin;
     int width, height;
     int row_idx, col_idx;
     UINT8 **inrows;
-    PyObject *ret = PyList_New(0);
-    if (ret == NULL) {
+
+    if (!PyArg_ParseTuple(args, "s#O", &lut, &lut_len, &i0)) {
         return NULL;
     }
 
-    if (!PyArg_ParseTuple(args, "On", &py_lut, &i0)) {
-        Py_DECREF(ret);
-        PyErr_SetString(PyExc_RuntimeError, "Argument parsing problem");
-        return NULL;
-    }
-
-    if (!PyBytes_Check(py_lut)) {
-        Py_DECREF(ret);
-        PyErr_SetString(PyExc_RuntimeError, "The morphology LUT is not a bytes object");
-        return NULL;
-    }
-
-    lut_len = PyBytes_Size(py_lut);
-
     if (lut_len < LUT_SIZE) {
-        Py_DECREF(ret);
         PyErr_SetString(PyExc_RuntimeError, "The morphology LUT has the wrong size");
         return NULL;
     }
 
-    lut = PyBytes_AsString(py_lut);
-    imgin = (Imaging)i0;
+    if (!PyCapsule_IsValid(i0, IMAGING_MAGIC)) {
+        PyErr_Format(PyExc_TypeError, "Expected '%s' Capsule", IMAGING_MAGIC);
+        return NULL;
+    }
+
+    imgin = (Imaging)PyCapsule_GetPointer(i0, IMAGING_MAGIC);
 
     if (imgin->type != IMAGING_TYPE_UINT8 || imgin->bands != 1) {
-        Py_DECREF(ret);
         PyErr_SetString(PyExc_RuntimeError, "Unsupported image type");
         return NULL;
     }
 
+    PyObject *ret = PyList_New(0);
+    if (ret == NULL) {
+        return NULL;
+    }
+
     inrows = imgin->image8;
     width = imgin->xsize;
     height = imgin->ysize;
@@ -215,26 +200,31 @@ match(PyObject *self, PyObject *args) {
 */
 static PyObject *
 get_on_pixels(PyObject *self, PyObject *args) {
-    Py_ssize_t i0;
+    PyObject *i0;
     Imaging img;
     UINT8 **rows;
     int row_idx, col_idx;
     int width, height;
+
+    if (!PyArg_ParseTuple(args, "O", &i0)) {
+        return NULL;
+    }
+
+    if (!PyCapsule_IsValid(i0, IMAGING_MAGIC)) {
+        PyErr_Format(PyExc_TypeError, "Expected '%s' Capsule", IMAGING_MAGIC);
+        return NULL;
+    }
+
+    img = (Imaging)PyCapsule_GetPointer(i0, IMAGING_MAGIC);
+    rows = img->image8;
+    width = img->xsize;
+    height = img->ysize;
+
     PyObject *ret = PyList_New(0);
     if (ret == NULL) {
         return NULL;
     }
 
-    if (!PyArg_ParseTuple(args, "n", &i0)) {
-        Py_DECREF(ret);
-        PyErr_SetString(PyExc_RuntimeError, "Argument parsing problem");
-        return NULL;
-    }
-    img = (Imaging)i0;
-    rows = img->image8;
-    width = img->xsize;
-    height = img->ysize;
-
     for (row_idx = 0; row_idx < height; row_idx++) {
         UINT8 *row = rows[row_idx];
         for (col_idx = 0; col_idx < width; col_idx++) {
@@ -253,7 +243,8 @@ static PyMethodDef functions[] = {
     {"apply", (PyCFunction)apply, METH_VARARGS, NULL},
     {"get_on_pixels", (PyCFunction)get_on_pixels, METH_VARARGS, NULL},
     {"match", (PyCFunction)match, METH_VARARGS, NULL},
-    {NULL, NULL, 0, NULL}};
+    {NULL, NULL, 0, NULL}
+};
 
 PyMODINIT_FUNC
 PyInit__imagingmorph(void) {
@@ -269,5 +260,9 @@ PyInit__imagingmorph(void) {
 
     m = PyModule_Create(&module_def);
 
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     return m;
 }
diff --git a/src/_imagingtk.c b/src/_imagingtk.c
index efa7fc1b6..c70d044bb 100644
--- a/src/_imagingtk.c
+++ b/src/_imagingtk.c
@@ -62,5 +62,10 @@ PyInit__imagingtk(void) {
         Py_DECREF(m);
         return NULL;
     }
+
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     return m;
 }
diff --git a/src/_webp.c b/src/_webp.c
index fe63027fb..dfda7048d 100644
--- a/src/_webp.c
+++ b/src/_webp.c
@@ -4,8 +4,6 @@
 #include <webp/encode.h>
 #include <webp/decode.h>
 #include <webp/types.h>
-
-#ifdef HAVE_WEBPMUX
 #include <webp/mux.h>
 #include <webp/demux.h>
 
@@ -13,12 +11,10 @@
  * Check the versions from mux.h and demux.h, to ensure the WebPAnimEncoder and
  * WebPAnimDecoder APIs are present (initial support was added in 0.5.0). The
  * very early versions had some significant differences, so we require later
- * versions, before enabling animation support.
+ * versions.
  */
-#if WEBP_MUX_ABI_VERSION >= 0x0104 && WEBP_DEMUX_ABI_VERSION >= 0x0105
-#define HAVE_WEBPANIM
-#endif
-
+#if WEBP_MUX_ABI_VERSION < 0x0106 || WEBP_DEMUX_ABI_VERSION < 0x0107
+#error libwebp 0.5.0 and above is required. Upgrade libwebp or build Pillow with --disable-webp flag
 #endif
 
 void
@@ -35,14 +31,13 @@ ImagingSectionLeave(ImagingSectionCookie *cookie) {
 /* WebP Muxer Error Handling                                            */
 /* -------------------------------------------------------------------- */
 
-#ifdef HAVE_WEBPMUX
-
 static const char *const kErrorMessages[-WEBP_MUX_NOT_ENOUGH_DATA + 1] = {
     "WEBP_MUX_NOT_FOUND",
     "WEBP_MUX_INVALID_ARGUMENT",
     "WEBP_MUX_BAD_DATA",
     "WEBP_MUX_MEMORY_ERROR",
-    "WEBP_MUX_NOT_ENOUGH_DATA"};
+    "WEBP_MUX_NOT_ENOUGH_DATA"
+};
 
 PyObject *
 HandleMuxError(WebPMuxError err, char *chunk) {
@@ -61,7 +56,8 @@ HandleMuxError(WebPMuxError err, char *chunk) {
             sprintf(message, "could not assemble chunks: %s", kErrorMessages[-err]);
     } else {
         message_len = sprintf(
-            message, "could not set %.4s chunk: %s", chunk, kErrorMessages[-err]);
+            message, "could not set %.4s chunk: %s", chunk, kErrorMessages[-err]
+        );
     }
     if (message_len < 0) {
         PyErr_SetString(PyExc_RuntimeError, "failed to construct error message");
@@ -87,14 +83,53 @@ HandleMuxError(WebPMuxError err, char *chunk) {
     return NULL;
 }
 
-#endif
+/* -------------------------------------------------------------------- */
+/* Frame import                                                         */
+/* -------------------------------------------------------------------- */
+
+static int
+import_frame_libwebp(WebPPicture *frame, Imaging im) {
+    if (strcmp(im->mode, "RGBA") && strcmp(im->mode, "RGB") &&
+        strcmp(im->mode, "RGBX")) {
+        PyErr_SetString(PyExc_ValueError, "unsupported image mode");
+        return -1;
+    }
+
+    frame->width = im->xsize;
+    frame->height = im->ysize;
+    frame->use_argb = 1;  // Don't convert RGB pixels to YUV
+
+    if (!WebPPictureAlloc(frame)) {
+        PyErr_SetString(PyExc_MemoryError, "can't allocate picture frame");
+        return -2;
+    }
+
+    int ignore_fourth_channel = strcmp(im->mode, "RGBA");
+    for (int y = 0; y < im->ysize; ++y) {
+        UINT8 *src = (UINT8 *)im->image32[y];
+        UINT32 *dst = frame->argb + frame->argb_stride * y;
+        if (ignore_fourth_channel) {
+            for (int x = 0; x < im->xsize; ++x) {
+                dst[x] =
+                    ((UINT32)(src[x * 4 + 2]) | ((UINT32)(src[x * 4 + 1]) << 8) |
+                     ((UINT32)(src[x * 4]) << 16) | (0xff << 24));
+            }
+        } else {
+            for (int x = 0; x < im->xsize; ++x) {
+                dst[x] =
+                    ((UINT32)(src[x * 4 + 2]) | ((UINT32)(src[x * 4 + 1]) << 8) |
+                     ((UINT32)(src[x * 4]) << 16) | ((UINT32)(src[x * 4 + 3]) << 24));
+            }
+        }
+    }
+
+    return 0;
+}
 
 /* -------------------------------------------------------------------- */
 /* WebP Animation Support                                               */
 /* -------------------------------------------------------------------- */
 
-#ifdef HAVE_WEBPANIM
-
 // Encoder type
 typedef struct {
     PyObject_HEAD WebPAnimEncoder *enc;
@@ -138,7 +173,8 @@ _anim_encoder_new(PyObject *self, PyObject *args) {
             &kmin,
             &kmax,
             &allow_mixed,
-            &verbose)) {
+            &verbose
+        )) {
         return NULL;
     }
 
@@ -187,15 +223,14 @@ _anim_encoder_dealloc(PyObject *self) {
 
 PyObject *
 _anim_encoder_add(PyObject *self, PyObject *args) {
-    uint8_t *rgb;
-    Py_ssize_t size;
+    PyObject *i0;
+    Imaging im;
     int timestamp;
-    int width;
-    int height;
-    char *mode;
     int lossless;
     float quality_factor;
+    float alpha_quality_factor;
     int method;
+    ImagingSectionCookie cookie;
     WebPConfig config;
     WebPAnimEncoderObject *encp = (WebPAnimEncoderObject *)self;
     WebPAnimEncoder *enc = encp->enc;
@@ -203,25 +238,30 @@ _anim_encoder_add(PyObject *self, PyObject *args) {
 
     if (!PyArg_ParseTuple(
             args,
-            "z#iiisifi",
-            (char **)&rgb,
-            &size,
+            "Oiiffi",
+            &i0,
             &timestamp,
-            &width,
-            &height,
-            &mode,
             &lossless,
             &quality_factor,
-            &method)) {
+            &alpha_quality_factor,
+            &method
+        )) {
         return NULL;
     }
 
     // Check for NULL frame, which sets duration of final frame
-    if (!rgb) {
+    if (i0 == Py_None) {
         WebPAnimEncoderAdd(enc, NULL, timestamp, NULL);
         Py_RETURN_NONE;
     }
 
+    if (!PyCapsule_IsValid(i0, IMAGING_MAGIC)) {
+        PyErr_Format(PyExc_TypeError, "Expected '%s' Capsule", IMAGING_MAGIC);
+        return NULL;
+    }
+
+    im = (Imaging)PyCapsule_GetPointer(i0, IMAGING_MAGIC);
+
     // Setup config for this frame
     if (!WebPConfigInit(&config)) {
         PyErr_SetString(PyExc_RuntimeError, "failed to initialize config!");
@@ -229,6 +269,7 @@ _anim_encoder_add(PyObject *self, PyObject *args) {
     }
     config.lossless = lossless;
     config.quality = quality_factor;
+    config.alpha_quality = alpha_quality_factor;
     config.method = method;
 
     // Validate the config
@@ -237,20 +278,15 @@ _anim_encoder_add(PyObject *self, PyObject *args) {
         return NULL;
     }
 
-    // Populate the frame with raw bytes passed to us
-    frame->width = width;
-    frame->height = height;
-    frame->use_argb = 1;  // Don't convert RGB pixels to YUV
-    if (strcmp(mode, "RGBA") == 0) {
-        WebPPictureImportRGBA(frame, rgb, 4 * width);
-    } else if (strcmp(mode, "RGBX") == 0) {
-        WebPPictureImportRGBX(frame, rgb, 4 * width);
-    } else {
-        WebPPictureImportRGB(frame, rgb, 3 * width);
+    if (import_frame_libwebp(frame, im)) {
+        return NULL;
     }
 
-    // Add the frame to the encoder
-    if (!WebPAnimEncoderAdd(enc, frame, timestamp, &config)) {
+    ImagingSectionEnter(&cookie);
+    int ok = WebPAnimEncoderAdd(enc, frame, timestamp, &config);
+    ImagingSectionLeave(&cookie);
+
+    if (!ok) {
         PyErr_SetString(PyExc_RuntimeError, WebPAnimEncoderGetError(enc));
         return NULL;
     }
@@ -280,7 +316,8 @@ _anim_encoder_assemble(PyObject *self, PyObject *args) {
             &exif_bytes,
             &exif_size,
             &xmp_bytes,
-            &xmp_size)) {
+            &xmp_size
+        )) {
         return NULL;
     }
 
@@ -418,7 +455,8 @@ _anim_decoder_get_info(PyObject *self) {
         info->loop_count,
         info->bgcolor,
         info->frame_count,
-        decp->mode);
+        decp->mode
+    );
 }
 
 PyObject *
@@ -448,17 +486,23 @@ PyObject *
 _anim_decoder_get_next(PyObject *self) {
     uint8_t *buf;
     int timestamp;
+    int ok;
     PyObject *bytes;
     PyObject *ret;
+    ImagingSectionCookie cookie;
     WebPAnimDecoderObject *decp = (WebPAnimDecoderObject *)self;
 
-    if (!WebPAnimDecoderGetNext(decp->dec, &buf, &timestamp)) {
+    ImagingSectionEnter(&cookie);
+    ok = WebPAnimDecoderGetNext(decp->dec, &buf, &timestamp);
+    ImagingSectionLeave(&cookie);
+    if (!ok) {
         PyErr_SetString(PyExc_OSError, "failed to read next frame");
         return NULL;
     }
 
     bytes = PyBytes_FromStringAndSize(
-        (char *)buf, decp->info.canvas_width * 4 * decp->info.canvas_height);
+        (char *)buf, decp->info.canvas_width * 4 * decp->info.canvas_height
+    );
 
     ret = Py_BuildValue("Si", bytes, timestamp);
 
@@ -487,18 +531,18 @@ static struct PyMethodDef _anim_encoder_methods[] = {
 // WebPAnimEncoder type definition
 static PyTypeObject WebPAnimEncoder_Type = {
     PyVarObject_HEAD_INIT(NULL, 0) "WebPAnimEncoder", /*tp_name */
-    sizeof(WebPAnimEncoderObject),                    /*tp_size */
+    sizeof(WebPAnimEncoderObject),                    /*tp_basicsize */
     0,                                                /*tp_itemsize */
     /* methods */
     (destructor)_anim_encoder_dealloc, /*tp_dealloc*/
-    0,                                 /*tp_print*/
+    0,                                 /*tp_vectorcall_offset*/
     0,                                 /*tp_getattr*/
     0,                                 /*tp_setattr*/
-    0,                                 /*tp_compare*/
+    0,                                 /*tp_as_async*/
     0,                                 /*tp_repr*/
-    0,                                 /*tp_as_number */
-    0,                                 /*tp_as_sequence */
-    0,                                 /*tp_as_mapping */
+    0,                                 /*tp_as_number*/
+    0,                                 /*tp_as_sequence*/
+    0,                                 /*tp_as_mapping*/
     0,                                 /*tp_hash*/
     0,                                 /*tp_call*/
     0,                                 /*tp_str*/
@@ -530,18 +574,18 @@ static struct PyMethodDef _anim_decoder_methods[] = {
 // WebPAnimDecoder type definition
 static PyTypeObject WebPAnimDecoder_Type = {
     PyVarObject_HEAD_INIT(NULL, 0) "WebPAnimDecoder", /*tp_name */
-    sizeof(WebPAnimDecoderObject),                    /*tp_size */
+    sizeof(WebPAnimDecoderObject),                    /*tp_basicsize */
     0,                                                /*tp_itemsize */
     /* methods */
     (destructor)_anim_decoder_dealloc, /*tp_dealloc*/
-    0,                                 /*tp_print*/
+    0,                                 /*tp_vectorcall_offset*/
     0,                                 /*tp_getattr*/
     0,                                 /*tp_setattr*/
-    0,                                 /*tp_compare*/
+    0,                                 /*tp_as_async*/
     0,                                 /*tp_repr*/
-    0,                                 /*tp_as_number */
-    0,                                 /*tp_as_sequence */
-    0,                                 /*tp_as_mapping */
+    0,                                 /*tp_as_number*/
+    0,                                 /*tp_as_sequence*/
+    0,                                 /*tp_as_mapping*/
     0,                                 /*tp_hash*/
     0,                                 /*tp_call*/
     0,                                 /*tp_str*/
@@ -561,33 +605,27 @@ static PyTypeObject WebPAnimDecoder_Type = {
     0,                                 /*tp_getset*/
 };
 
-#endif
-
 /* -------------------------------------------------------------------- */
 /* Legacy WebP Support                                                  */
 /* -------------------------------------------------------------------- */
 
 PyObject *
 WebPEncode_wrapper(PyObject *self, PyObject *args) {
-    int width;
-    int height;
     int lossless;
     float quality_factor;
+    float alpha_quality_factor;
     int method;
     int exact;
-    uint8_t *rgb;
+    Imaging im;
+    PyObject *i0;
     uint8_t *icc_bytes;
     uint8_t *exif_bytes;
     uint8_t *xmp_bytes;
     uint8_t *output;
-    char *mode;
-    Py_ssize_t size;
     Py_ssize_t icc_size;
     Py_ssize_t exif_size;
     Py_ssize_t xmp_size;
     size_t ret_size;
-    int rgba_mode;
-    int channels;
     int ok;
     ImagingSectionCookie cookie;
     WebPConfig config;
@@ -596,14 +634,11 @@ WebPEncode_wrapper(PyObject *self, PyObject *args) {
 
     if (!PyArg_ParseTuple(
             args,
-            "y#iiifss#iis#s#",
-            (char **)&rgb,
-            &size,
-            &width,
-            &height,
+            "Oiffs#iis#s#",
+            &i0,
             &lossless,
             &quality_factor,
-            &mode,
+            &alpha_quality_factor,
             &icc_bytes,
             &icc_size,
             &method,
@@ -611,19 +646,17 @@ WebPEncode_wrapper(PyObject *self, PyObject *args) {
             &exif_bytes,
             &exif_size,
             &xmp_bytes,
-            &xmp_size)) {
+            &xmp_size
+        )) {
         return NULL;
     }
 
-    rgba_mode = strcmp(mode, "RGBA") == 0;
-    if (!rgba_mode && strcmp(mode, "RGB") != 0) {
-        Py_RETURN_NONE;
+    if (!PyCapsule_IsValid(i0, IMAGING_MAGIC)) {
+        PyErr_Format(PyExc_TypeError, "Expected '%s' Capsule", IMAGING_MAGIC);
+        return NULL;
     }
 
-    channels = rgba_mode ? 4 : 3;
-    if (size < width * height * channels) {
-        Py_RETURN_NONE;
-    }
+    im = (Imaging)PyCapsule_GetPointer(i0, IMAGING_MAGIC);
 
     // Setup config for this frame
     if (!WebPConfigInit(&config)) {
@@ -632,11 +665,9 @@ WebPEncode_wrapper(PyObject *self, PyObject *args) {
     }
     config.lossless = lossless;
     config.quality = quality_factor;
+    config.alpha_quality = alpha_quality_factor;
     config.method = method;
-#if WEBP_ENCODER_ABI_VERSION >= 0x0209
-    // the "exact" flag is only available in libwebp 0.5.0 and later
     config.exact = exact;
-#endif
 
     // Validate the config
     if (!WebPValidateConfig(&config)) {
@@ -648,14 +679,9 @@ WebPEncode_wrapper(PyObject *self, PyObject *args) {
         PyErr_SetString(PyExc_ValueError, "could not initialise picture");
         return NULL;
     }
-    pic.width = width;
-    pic.height = height;
-    pic.use_argb = 1;  // Don't convert RGB pixels to YUV
 
-    if (rgba_mode) {
-        WebPPictureImportRGBA(&pic, rgb, channels * width);
-    } else {
-        WebPPictureImportRGB(&pic, rgb, channels * width);
+    if (import_frame_libwebp(&pic, im)) {
+        return NULL;
     }
 
     WebPMemoryWriterInit(&writer);
@@ -668,19 +694,21 @@ WebPEncode_wrapper(PyObject *self, PyObject *args) {
 
     WebPPictureFree(&pic);
     if (!ok) {
-        PyErr_Format(PyExc_ValueError, "encoding error %d", (&pic)->error_code);
+        int error_code = (&pic)->error_code;
+        char message[50] = "";
+        if (error_code == VP8_ENC_ERROR_BAD_DIMENSION) {
+            sprintf(
+                message,
+                ": Image size exceeds WebP limit of %d pixels",
+                WEBP_MAX_DIMENSION
+            );
+        }
+        PyErr_Format(PyExc_ValueError, "encoding error %d%s", error_code, message);
         return NULL;
     }
     output = writer.mem;
     ret_size = writer.size;
 
-#ifndef HAVE_WEBPMUX
-    if (ret_size > 0) {
-        PyObject *ret = PyBytes_FromStringAndSize((char *)output, ret_size);
-        free(output);
-        return ret;
-    }
-#else
     {
         /* I want to truncate the *_size items that get passed into WebP
            data. Pypy2.1.0 had some issues where the Py_ssize_t items had
@@ -756,127 +784,9 @@ WebPEncode_wrapper(PyObject *self, PyObject *args) {
             return ret;
         }
     }
-#endif
     Py_RETURN_NONE;
 }
 
-PyObject *
-WebPDecode_wrapper(PyObject *self, PyObject *args) {
-    PyBytesObject *webp_string;
-    const uint8_t *webp;
-    Py_ssize_t size;
-    PyObject *ret = Py_None, *bytes = NULL, *pymode = NULL, *icc_profile = NULL,
-             *exif = NULL;
-    WebPDecoderConfig config;
-    VP8StatusCode vp8_status_code = VP8_STATUS_OK;
-    char *mode = "RGB";
-
-    if (!PyArg_ParseTuple(args, "S", &webp_string)) {
-        return NULL;
-    }
-
-    if (!WebPInitDecoderConfig(&config)) {
-        Py_RETURN_NONE;
-    }
-
-    PyBytes_AsStringAndSize((PyObject *)webp_string, (char **)&webp, &size);
-
-    vp8_status_code = WebPGetFeatures(webp, size, &config.input);
-    if (vp8_status_code == VP8_STATUS_OK) {
-        // If we don't set it, we don't get alpha.
-        // Initialized to MODE_RGB
-        if (config.input.has_alpha) {
-            config.output.colorspace = MODE_RGBA;
-            mode = "RGBA";
-        }
-
-#ifndef HAVE_WEBPMUX
-        vp8_status_code = WebPDecode(webp, size, &config);
-#else
-        {
-            int copy_data = 0;
-            WebPData data = {webp, size};
-            WebPMuxFrameInfo image;
-            WebPData icc_profile_data = {0};
-            WebPData exif_data = {0};
-
-            WebPMux *mux = WebPMuxCreate(&data, copy_data);
-            if (NULL == mux) {
-                goto end;
-            }
-
-            if (WEBP_MUX_OK != WebPMuxGetFrame(mux, 1, &image)) {
-                WebPMuxDelete(mux);
-                goto end;
-            }
-
-            webp = image.bitstream.bytes;
-            size = image.bitstream.size;
-
-            vp8_status_code = WebPDecode(webp, size, &config);
-
-            if (WEBP_MUX_OK == WebPMuxGetChunk(mux, "ICCP", &icc_profile_data)) {
-                icc_profile = PyBytes_FromStringAndSize(
-                    (const char *)icc_profile_data.bytes, icc_profile_data.size);
-            }
-
-            if (WEBP_MUX_OK == WebPMuxGetChunk(mux, "EXIF", &exif_data)) {
-                exif = PyBytes_FromStringAndSize(
-                    (const char *)exif_data.bytes, exif_data.size);
-            }
-
-            WebPDataClear(&image.bitstream);
-            WebPMuxDelete(mux);
-        }
-#endif
-    }
-
-    if (vp8_status_code != VP8_STATUS_OK) {
-        goto end;
-    }
-
-    if (config.output.colorspace < MODE_YUV) {
-        bytes = PyBytes_FromStringAndSize(
-            (char *)config.output.u.RGBA.rgba, config.output.u.RGBA.size);
-    } else {
-        // Skipping YUV for now. Need Test Images.
-        // UNDONE -- unclear if we'll ever get here if we set mode_rgb*
-        bytes = PyBytes_FromStringAndSize(
-            (char *)config.output.u.YUVA.y, config.output.u.YUVA.y_size);
-    }
-
-    pymode = PyUnicode_FromString(mode);
-    ret = Py_BuildValue(
-        "SiiSSS",
-        bytes,
-        config.output.width,
-        config.output.height,
-        pymode,
-        NULL == icc_profile ? Py_None : icc_profile,
-        NULL == exif ? Py_None : exif);
-
-end:
-    WebPFreeDecBuffer(&config.output);
-
-    Py_XDECREF(bytes);
-    Py_XDECREF(pymode);
-    Py_XDECREF(icc_profile);
-    Py_XDECREF(exif);
-
-    if (Py_None == ret) {
-        Py_RETURN_NONE;
-    }
-
-    return ret;
-}
-
-// Return the decoder's version number, packed in hexadecimal using 8bits for
-// each of major/minor/revision. E.g: v2.5.7 is 0x020507.
-PyObject *
-WebPDecoderVersion_wrapper() {
-    return Py_BuildValue("i", WebPGetDecoderVersion());
-}
-
 // Version as string
 const char *
 WebPDecoderVersion_str(void) {
@@ -887,88 +797,31 @@ WebPDecoderVersion_str(void) {
         "%d.%d.%d",
         version_number >> 16,
         (version_number >> 8) % 0x100,
-        version_number % 0x100);
+        version_number % 0x100
+    );
     return version;
 }
 
-/*
- * The version of webp that ships with (0.1.3) Ubuntu 12.04 doesn't handle alpha well.
- * Files that are valid with 0.3 are reported as being invalid.
- */
-int
-WebPDecoderBuggyAlpha(void) {
-    return WebPGetDecoderVersion() == 0x0103;
-}
-
-PyObject *
-WebPDecoderBuggyAlpha_wrapper() {
-    return Py_BuildValue("i", WebPDecoderBuggyAlpha());
-}
-
 /* -------------------------------------------------------------------- */
 /* Module Setup                                                         */
 /* -------------------------------------------------------------------- */
 
 static PyMethodDef webpMethods[] = {
-#ifdef HAVE_WEBPANIM
     {"WebPAnimDecoder", _anim_decoder_new, METH_VARARGS, "WebPAnimDecoder"},
     {"WebPAnimEncoder", _anim_encoder_new, METH_VARARGS, "WebPAnimEncoder"},
-#endif
     {"WebPEncode", WebPEncode_wrapper, METH_VARARGS, "WebPEncode"},
-    {"WebPDecode", WebPDecode_wrapper, METH_VARARGS, "WebPDecode"},
-    {"WebPDecoderVersion", WebPDecoderVersion_wrapper, METH_NOARGS, "WebPVersion"},
-    {"WebPDecoderBuggyAlpha",
-     WebPDecoderBuggyAlpha_wrapper,
-     METH_NOARGS,
-     "WebPDecoderBuggyAlpha"},
-    {NULL, NULL}};
-
-void
-addMuxFlagToModule(PyObject *m) {
-    PyObject *have_webpmux;
-#ifdef HAVE_WEBPMUX
-    have_webpmux = Py_True;
-#else
-    have_webpmux = Py_False;
-#endif
-    Py_INCREF(have_webpmux);
-    PyModule_AddObject(m, "HAVE_WEBPMUX", have_webpmux);
-}
-
-void
-addAnimFlagToModule(PyObject *m) {
-    PyObject *have_webpanim;
-#ifdef HAVE_WEBPANIM
-    have_webpanim = Py_True;
-#else
-    have_webpanim = Py_False;
-#endif
-    Py_INCREF(have_webpanim);
-    PyModule_AddObject(m, "HAVE_WEBPANIM", have_webpanim);
-}
-
-void
-addTransparencyFlagToModule(PyObject *m) {
-    PyObject *have_transparency = PyBool_FromLong(!WebPDecoderBuggyAlpha());
-    if (PyModule_AddObject(m, "HAVE_TRANSPARENCY", have_transparency)) {
-        Py_DECREF(have_transparency);
-    }
-}
+    {NULL, NULL}
+};
 
 static int
 setup_module(PyObject *m) {
-#ifdef HAVE_WEBPANIM
     /* Ready object types */
     if (PyType_Ready(&WebPAnimDecoder_Type) < 0 ||
         PyType_Ready(&WebPAnimEncoder_Type) < 0) {
         return -1;
     }
-#endif
-    PyObject *d = PyModule_GetDict(m);
-    addMuxFlagToModule(m);
-    addAnimFlagToModule(m);
-    addTransparencyFlagToModule(m);
 
+    PyObject *d = PyModule_GetDict(m);
     PyObject *v = PyUnicode_FromString(WebPDecoderVersion_str());
     PyDict_SetItemString(d, "webpdecoder_version", v ? v : Py_None);
     Py_XDECREF(v);
@@ -994,5 +847,9 @@ PyInit__webp(void) {
         return NULL;
     }
 
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     return m;
 }
diff --git a/src/decode.c b/src/decode.c
index 7e3fadc04..51d0aced2 100644
--- a/src/decode.c
+++ b/src/decode.c
@@ -46,7 +46,8 @@
 
 typedef struct {
     PyObject_HEAD int (*decode)(
-        Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes);
+        Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes
+    );
     int (*cleanup)(ImagingCodecState state);
     struct ImagingCodecStateInstance state;
     Imaging im;
@@ -258,18 +259,18 @@ static struct PyGetSetDef getseters[] = {
 
 static PyTypeObject ImagingDecoderType = {
     PyVarObject_HEAD_INIT(NULL, 0) "ImagingDecoder", /*tp_name*/
-    sizeof(ImagingDecoderObject),                    /*tp_size*/
+    sizeof(ImagingDecoderObject),                    /*tp_basicsize*/
     0,                                               /*tp_itemsize*/
     /* methods */
     (destructor)_dealloc, /*tp_dealloc*/
-    0,                    /*tp_print*/
+    0,                    /*tp_vectorcall_offset*/
     0,                    /*tp_getattr*/
     0,                    /*tp_setattr*/
-    0,                    /*tp_compare*/
+    0,                    /*tp_as_async*/
     0,                    /*tp_repr*/
-    0,                    /*tp_as_number */
-    0,                    /*tp_as_sequence */
-    0,                    /*tp_as_mapping */
+    0,                    /*tp_as_number*/
+    0,                    /*tp_as_sequence*/
+    0,                    /*tp_as_mapping*/
     0,                    /*tp_hash*/
     0,                    /*tp_call*/
     0,                    /*tp_str*/
@@ -889,7 +890,8 @@ PyImaging_Jpeg2KDecoderNew(PyObject *self, PyObject *args) {
     PY_LONG_LONG length = -1;
 
     if (!PyArg_ParseTuple(
-            args, "ss|iiiL", &mode, &format, &reduce, &layers, &fd, &length)) {
+            args, "ss|iiiL", &mode, &format, &reduce, &layers, &fd, &length
+        )) {
         return NULL;
     }
 
diff --git a/src/display.c b/src/display.c
index 754a6ae78..b4e2e3899 100644
--- a/src/display.c
+++ b/src/display.c
@@ -105,7 +105,8 @@ _draw(ImagingDisplayObject *display, PyObject *args) {
             src + 0,
             src + 1,
             src + 2,
-            src + 3)) {
+            src + 3
+        )) {
         return NULL;
     }
 
@@ -221,7 +222,8 @@ _tobytes(ImagingDisplayObject *display, PyObject *args) {
     }
 
     return PyBytes_FromStringAndSize(
-        display->dib->bits, display->dib->ysize * display->dib->linesize);
+        display->dib->bits, display->dib->ysize * display->dib->linesize
+    );
 }
 
 static struct PyMethodDef methods[] = {
@@ -247,22 +249,23 @@ _getattr_size(ImagingDisplayObject *self, void *closure) {
 }
 
 static struct PyGetSetDef getsetters[] = {
-    {"mode", (getter)_getattr_mode}, {"size", (getter)_getattr_size}, {NULL}};
+    {"mode", (getter)_getattr_mode}, {"size", (getter)_getattr_size}, {NULL}
+};
 
 static PyTypeObject ImagingDisplayType = {
     PyVarObject_HEAD_INIT(NULL, 0) "ImagingDisplay", /*tp_name*/
-    sizeof(ImagingDisplayObject),                    /*tp_size*/
+    sizeof(ImagingDisplayObject),                    /*tp_basicsize*/
     0,                                               /*tp_itemsize*/
     /* methods */
     (destructor)_delete, /*tp_dealloc*/
-    0,                   /*tp_print*/
+    0,                   /*tp_vectorcall_offset*/
     0,                   /*tp_getattr*/
     0,                   /*tp_setattr*/
-    0,                   /*tp_compare*/
+    0,                   /*tp_as_async*/
     0,                   /*tp_repr*/
-    0,                   /*tp_as_number */
-    0,                   /*tp_as_sequence */
-    0,                   /*tp_as_mapping */
+    0,                   /*tp_as_number*/
+    0,                   /*tp_as_sequence*/
+    0,                   /*tp_as_mapping*/
     0,                   /*tp_hash*/
     0,                   /*tp_call*/
     0,                   /*tp_str*/
@@ -341,9 +344,8 @@ PyImaging_GrabScreenWin32(PyObject *self, PyObject *args) {
     // added in Windows 10 (1607)
     // loaded dynamically to avoid link errors
     user32 = LoadLibraryA("User32.dll");
-    SetThreadDpiAwarenessContext_function =
-        (Func_SetThreadDpiAwarenessContext)GetProcAddress(
-            user32, "SetThreadDpiAwarenessContext");
+    SetThreadDpiAwarenessContext_function = (Func_SetThreadDpiAwarenessContext
+    )GetProcAddress(user32, "SetThreadDpiAwarenessContext");
     if (SetThreadDpiAwarenessContext_function != NULL) {
         // DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE = ((DPI_CONTEXT_HANDLE)-3)
         dpiAwareness = SetThreadDpiAwarenessContext_function((HANDLE)-3);
@@ -403,7 +405,8 @@ PyImaging_GrabScreenWin32(PyObject *self, PyObject *args) {
             height,
             PyBytes_AS_STRING(buffer),
             (BITMAPINFO *)&core,
-            DIB_RGB_COLORS)) {
+            DIB_RGB_COLORS
+        )) {
         goto error;
     }
 
@@ -427,7 +430,6 @@ error:
 
 PyObject *
 PyImaging_GrabClipboardWin32(PyObject *self, PyObject *args) {
-    int clip;
     HANDLE handle = NULL;
     int size;
     void *data;
@@ -548,7 +550,8 @@ windowCallback(HWND wnd, UINT message, WPARAM wParam, LPARAM lParam) {
                 ps.rcPaint.left,
                 ps.rcPaint.top,
                 ps.rcPaint.right,
-                ps.rcPaint.bottom);
+                ps.rcPaint.bottom
+            );
             if (result) {
                 Py_DECREF(result);
             } else {
@@ -563,7 +566,8 @@ windowCallback(HWND wnd, UINT message, WPARAM wParam, LPARAM lParam) {
                 0,
                 0,
                 rect.right - rect.left,
-                rect.bottom - rect.top);
+                rect.bottom - rect.top
+            );
             if (result) {
                 Py_DECREF(result);
             } else {
@@ -578,7 +582,8 @@ windowCallback(HWND wnd, UINT message, WPARAM wParam, LPARAM lParam) {
                 0,
                 0,
                 rect.right - rect.left,
-                rect.bottom - rect.top);
+                rect.bottom - rect.top
+            );
             if (result) {
                 Py_DECREF(result);
             } else {
@@ -592,7 +597,8 @@ windowCallback(HWND wnd, UINT message, WPARAM wParam, LPARAM lParam) {
         case WM_SIZE:
             /* resize window */
             result = PyObject_CallFunction(
-                callback, "sii", "resize", LOWORD(lParam), HIWORD(lParam));
+                callback, "sii", "resize", LOWORD(lParam), HIWORD(lParam)
+            );
             if (result) {
                 InvalidateRect(wnd, NULL, 1);
                 Py_DECREF(result);
@@ -619,7 +625,7 @@ windowCallback(HWND wnd, UINT message, WPARAM wParam, LPARAM lParam) {
     if (callback) {
         /* restore thread state */
         PyEval_SaveThread();
-        PyThreadState_Swap(threadstate);
+        PyThreadState_Swap(current_threadstate);
     }
 
     return status;
@@ -671,7 +677,8 @@ PyImaging_CreateWindowWin32(PyObject *self, PyObject *args) {
         HWND_DESKTOP,
         NULL,
         NULL,
-        NULL);
+        NULL
+    );
 
     if (!wnd) {
         PyErr_SetString(PyExc_OSError, "failed to create window");
@@ -717,7 +724,7 @@ PyImaging_DrawWmf(PyObject *self, PyObject *args) {
     HDC dc;
     RECT rect;
     PyObject *buffer = NULL;
-    char *ptr;
+    void *ptr;
 
     char *data;
     Py_ssize_t datasize;
@@ -733,7 +740,8 @@ PyImaging_DrawWmf(PyObject *self, PyObject *args) {
             &x0,
             &x1,
             &y0,
-            &y1)) {
+            &y1
+        )) {
         return NULL;
     }
 
@@ -845,7 +853,8 @@ PyImaging_GrabScreenX11(PyObject *self, PyObject *args) {
         PyErr_Format(
             PyExc_OSError,
             "X connection failed: error %i",
-            xcb_connection_has_error(connection));
+            xcb_connection_has_error(connection)
+        );
         xcb_disconnect(connection);
         return NULL;
     }
@@ -879,8 +888,10 @@ PyImaging_GrabScreenX11(PyObject *self, PyObject *args) {
             0,
             width,
             height,
-            0x00ffffff),
-        &error);
+            0x00ffffff
+        ),
+        &error
+    );
     if (reply == NULL) {
         PyErr_Format(
             PyExc_OSError,
@@ -888,7 +899,8 @@ PyImaging_GrabScreenX11(PyObject *self, PyObject *args) {
             error->error_code,
             error->major_code,
             error->minor_code,
-            error->resource_id);
+            error->resource_id
+        );
         free(error);
         xcb_disconnect(connection);
         return NULL;
@@ -898,7 +910,8 @@ PyImaging_GrabScreenX11(PyObject *self, PyObject *args) {
 
     if (reply->depth == 24) {
         buffer = PyBytes_FromStringAndSize(
-            (char *)xcb_get_image_data(reply), xcb_get_image_data_length(reply));
+            (char *)xcb_get_image_data(reply), xcb_get_image_data_length(reply)
+        );
     } else {
         PyErr_Format(PyExc_OSError, "unsupported bit depth: %i", reply->depth);
     }
diff --git a/src/encode.c b/src/encode.c
index 308bd2059..1a4cd489d 100644
--- a/src/encode.c
+++ b/src/encode.c
@@ -25,6 +25,7 @@
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
 
+#include "thirdparty/pythoncapi_compat.h"
 #include "libImaging/Imaging.h"
 #include "libImaging/Gif.h"
 
@@ -38,7 +39,8 @@
 
 typedef struct {
     PyObject_HEAD int (*encode)(
-        Imaging im, ImagingCodecState state, UINT8 *buffer, int bytes);
+        Imaging im, ImagingCodecState state, UINT8 *buffer, int bytes
+    );
     int (*cleanup)(ImagingCodecState state);
     struct ImagingCodecStateInstance state;
     Imaging im;
@@ -134,7 +136,8 @@ _encode(ImagingEncoderObject *encoder, PyObject *args) {
     }
 
     status = encoder->encode(
-        encoder->im, &encoder->state, (UINT8 *)PyBytes_AsString(buf), bufsize);
+        encoder->im, &encoder->state, (UINT8 *)PyBytes_AsString(buf), bufsize
+    );
 
     /* adjust string length to avoid slicing in encoder */
     if (_PyBytes_Resize(&buf, (status > 0) ? status : 0) < 0) {
@@ -323,18 +326,18 @@ static struct PyGetSetDef getseters[] = {
 
 static PyTypeObject ImagingEncoderType = {
     PyVarObject_HEAD_INIT(NULL, 0) "ImagingEncoder", /*tp_name*/
-    sizeof(ImagingEncoderObject),                    /*tp_size*/
+    sizeof(ImagingEncoderObject),                    /*tp_basicsize*/
     0,                                               /*tp_itemsize*/
     /* methods */
     (destructor)_dealloc, /*tp_dealloc*/
-    0,                    /*tp_print*/
+    0,                    /*tp_vectorcall_offset*/
     0,                    /*tp_getattr*/
     0,                    /*tp_setattr*/
-    0,                    /*tp_compare*/
+    0,                    /*tp_as_async*/
     0,                    /*tp_repr*/
-    0,                    /*tp_as_number */
-    0,                    /*tp_as_sequence */
-    0,                    /*tp_as_mapping */
+    0,                    /*tp_as_number*/
+    0,                    /*tp_as_sequence*/
+    0,                    /*tp_as_mapping*/
     0,                    /*tp_hash*/
     0,                    /*tp_call*/
     0,                    /*tp_str*/
@@ -571,7 +574,8 @@ PyImaging_ZipEncoderNew(PyObject *self, PyObject *args) {
             &compress_level,
             &compress_type,
             &dictionary,
-            &dictionary_size)) {
+            &dictionary_size
+        )) {
         return NULL;
     }
 
@@ -652,15 +656,8 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
     PyObject *item;
 
     if (!PyArg_ParseTuple(
-            args,
-            "sssnsOO",
-            &mode,
-            &rawmode,
-            &compname,
-            &fp,
-            &filename,
-            &tags,
-            &types)) {
+            args, "sssnsOO", &mode, &rawmode, &compname, &fp, &filename, &tags, &types
+        )) {
         return NULL;
     }
 
@@ -671,11 +668,17 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
         tags_size = PyList_Size(tags);
         TRACE(("tags size: %d\n", (int)tags_size));
         for (pos = 0; pos < tags_size; pos++) {
-            item = PyList_GetItem(tags, pos);
+            item = PyList_GetItemRef(tags, pos);
+            if (item == NULL) {
+                return NULL;
+            }
+
             if (!PyTuple_Check(item) || PyTuple_Size(item) != 2) {
+                Py_DECREF(item);
                 PyErr_SetString(PyExc_ValueError, "Invalid tags list");
                 return NULL;
             }
+            Py_DECREF(item);
         }
         pos = 0;
     }
@@ -703,11 +706,17 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
 
     num_core_tags = sizeof(core_tags) / sizeof(int);
     for (pos = 0; pos < tags_size; pos++) {
-        item = PyList_GetItem(tags, pos);
+        item = PyList_GetItemRef(tags, pos);
+        if (item == NULL) {
+            return NULL;
+        }
+
         // We already checked that tags is a 2-tuple list.
-        key = PyTuple_GetItem(item, 0);
+        key = PyTuple_GET_ITEM(item, 0);
         key_int = (int)PyLong_AsLong(key);
-        value = PyTuple_GetItem(item, 1);
+        value = PyTuple_GET_ITEM(item, 1);
+        Py_DECREF(item);
+
         status = 0;
         is_core_tag = 0;
         is_var_length = 0;
@@ -721,7 +730,10 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
         }
 
         if (!is_core_tag) {
-            PyObject *tag_type = PyDict_GetItem(types, key);
+            PyObject *tag_type;
+            if (PyDict_GetItemRef(types, key, &tag_type) < 0) {
+                return NULL;  // Exception has been already set
+            }
             if (tag_type) {
                 int type_int = PyLong_AsLong(tag_type);
                 if (type_int >= TIFF_BYTE && type_int <= TIFF_DOUBLE) {
@@ -769,7 +781,8 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
                 is_var_length = 1;
             }
             if (ImagingLibTiffMergeFieldInfo(
-                    &encoder->state, type, key_int, is_var_length)) {
+                    &encoder->state, type, key_int, is_var_length
+                )) {
                 continue;
             }
         }
@@ -779,7 +792,8 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
                 &encoder->state,
                 (ttag_t)key_int,
                 PyBytes_Size(value),
-                PyBytes_AsString(value));
+                PyBytes_AsString(value)
+            );
         } else if (is_var_length) {
             Py_ssize_t len, i;
             TRACE(("Setting from Tuple: %d \n", key_int));
@@ -789,7 +803,8 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
                 int stride = 256;
                 if (len != 768) {
                     PyErr_SetString(
-                        PyExc_ValueError, "Requiring 768 items for Colormap");
+                        PyExc_ValueError, "Requiring 768 items for Colormap"
+                    );
                     return NULL;
                 }
                 UINT16 *av;
@@ -804,7 +819,8 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
                         (ttag_t)key_int,
                         av,
                         av + stride,
-                        av + stride * 2);
+                        av + stride * 2
+                    );
                     free(av);
                 }
             } else if (key_int == TIFFTAG_YCBCRSUBSAMPLING) {
@@ -812,7 +828,8 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
                     &encoder->state,
                     (ttag_t)key_int,
                     (UINT16)PyLong_AsLong(PyTuple_GetItem(value, 0)),
-                    (UINT16)PyLong_AsLong(PyTuple_GetItem(value, 1)));
+                    (UINT16)PyLong_AsLong(PyTuple_GetItem(value, 1))
+                );
             } else if (type == TIFF_SHORT) {
                 UINT16 *av;
                 /* malloc check ok, calloc checks for overflow */
@@ -822,7 +839,8 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
                         av[i] = (UINT16)PyLong_AsLong(PyTuple_GetItem(value, i));
                     }
                     status = ImagingLibTiffSetField(
-                        &encoder->state, (ttag_t)key_int, len, av);
+                        &encoder->state, (ttag_t)key_int, len, av
+                    );
                     free(av);
                 }
             } else if (type == TIFF_LONG) {
@@ -834,7 +852,8 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
                         av[i] = (UINT32)PyLong_AsLong(PyTuple_GetItem(value, i));
                     }
                     status = ImagingLibTiffSetField(
-                        &encoder->state, (ttag_t)key_int, len, av);
+                        &encoder->state, (ttag_t)key_int, len, av
+                    );
                     free(av);
                 }
             } else if (type == TIFF_SBYTE) {
@@ -846,7 +865,8 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
                         av[i] = (INT8)PyLong_AsLong(PyTuple_GetItem(value, i));
                     }
                     status = ImagingLibTiffSetField(
-                        &encoder->state, (ttag_t)key_int, len, av);
+                        &encoder->state, (ttag_t)key_int, len, av
+                    );
                     free(av);
                 }
             } else if (type == TIFF_SSHORT) {
@@ -858,7 +878,8 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
                         av[i] = (INT16)PyLong_AsLong(PyTuple_GetItem(value, i));
                     }
                     status = ImagingLibTiffSetField(
-                        &encoder->state, (ttag_t)key_int, len, av);
+                        &encoder->state, (ttag_t)key_int, len, av
+                    );
                     free(av);
                 }
             } else if (type == TIFF_SLONG) {
@@ -870,7 +891,8 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
                         av[i] = (INT32)PyLong_AsLong(PyTuple_GetItem(value, i));
                     }
                     status = ImagingLibTiffSetField(
-                        &encoder->state, (ttag_t)key_int, len, av);
+                        &encoder->state, (ttag_t)key_int, len, av
+                    );
                     free(av);
                 }
             } else if (type == TIFF_FLOAT) {
@@ -882,7 +904,8 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
                         av[i] = (FLOAT32)PyFloat_AsDouble(PyTuple_GetItem(value, i));
                     }
                     status = ImagingLibTiffSetField(
-                        &encoder->state, (ttag_t)key_int, len, av);
+                        &encoder->state, (ttag_t)key_int, len, av
+                    );
                     free(av);
                 }
             } else if (type == TIFF_DOUBLE) {
@@ -894,43 +917,54 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
                         av[i] = PyFloat_AsDouble(PyTuple_GetItem(value, i));
                     }
                     status = ImagingLibTiffSetField(
-                        &encoder->state, (ttag_t)key_int, len, av);
+                        &encoder->state, (ttag_t)key_int, len, av
+                    );
                     free(av);
                 }
             }
         } else {
             if (type == TIFF_SHORT) {
                 status = ImagingLibTiffSetField(
-                    &encoder->state, (ttag_t)key_int, (UINT16)PyLong_AsLong(value));
+                    &encoder->state, (ttag_t)key_int, (UINT16)PyLong_AsLong(value)
+                );
             } else if (type == TIFF_LONG) {
                 status = ImagingLibTiffSetField(
-                    &encoder->state, (ttag_t)key_int, PyLong_AsLongLong(value));
+                    &encoder->state, (ttag_t)key_int, PyLong_AsLongLong(value)
+                );
             } else if (type == TIFF_SSHORT) {
                 status = ImagingLibTiffSetField(
-                    &encoder->state, (ttag_t)key_int, (INT16)PyLong_AsLong(value));
+                    &encoder->state, (ttag_t)key_int, (INT16)PyLong_AsLong(value)
+                );
             } else if (type == TIFF_SLONG) {
                 status = ImagingLibTiffSetField(
-                    &encoder->state, (ttag_t)key_int, (INT32)PyLong_AsLong(value));
+                    &encoder->state, (ttag_t)key_int, (INT32)PyLong_AsLong(value)
+                );
             } else if (type == TIFF_FLOAT) {
                 status = ImagingLibTiffSetField(
-                    &encoder->state, (ttag_t)key_int, (FLOAT32)PyFloat_AsDouble(value));
+                    &encoder->state, (ttag_t)key_int, (FLOAT32)PyFloat_AsDouble(value)
+                );
             } else if (type == TIFF_DOUBLE) {
                 status = ImagingLibTiffSetField(
-                    &encoder->state, (ttag_t)key_int, (FLOAT64)PyFloat_AsDouble(value));
+                    &encoder->state, (ttag_t)key_int, (FLOAT64)PyFloat_AsDouble(value)
+                );
             } else if (type == TIFF_SBYTE) {
                 status = ImagingLibTiffSetField(
-                    &encoder->state, (ttag_t)key_int, (INT8)PyLong_AsLong(value));
+                    &encoder->state, (ttag_t)key_int, (INT8)PyLong_AsLong(value)
+                );
             } else if (type == TIFF_ASCII) {
                 status = ImagingLibTiffSetField(
-                    &encoder->state, (ttag_t)key_int, PyBytes_AsString(value));
+                    &encoder->state, (ttag_t)key_int, PyBytes_AsString(value)
+                );
             } else if (type == TIFF_RATIONAL) {
                 status = ImagingLibTiffSetField(
-                    &encoder->state, (ttag_t)key_int, (FLOAT64)PyFloat_AsDouble(value));
+                    &encoder->state, (ttag_t)key_int, (FLOAT64)PyFloat_AsDouble(value)
+                );
             } else {
                 TRACE(
                     ("Unhandled type for key %d : %s \n",
                      key_int,
-                     PyBytes_AsString(PyObject_Str(value))));
+                     PyBytes_AsString(PyObject_Str(value)))
+                );
             }
         }
         if (!status) {
@@ -991,7 +1025,8 @@ get_qtables_arrays(PyObject *qtables, int *qtablesLen) {
     if (num_tables < 1 || num_tables > NUM_QUANT_TBLS) {
         PyErr_SetString(
             PyExc_ValueError,
-            "Not a valid number of quantization tables. Should be between 1 and 4.");
+            "Not a valid number of quantization tables. Should be between 1 and 4."
+        );
         Py_DECREF(tables);
         return NULL;
     }
@@ -1042,9 +1077,12 @@ PyImaging_JpegEncoderNew(PyObject *self, PyObject *args) {
     Py_ssize_t progressive = 0;
     Py_ssize_t smooth = 0;
     Py_ssize_t optimize = 0;
+    int keep_rgb = 0;
     Py_ssize_t streamtype = 0; /* 0=interchange, 1=tables only, 2=image only */
     Py_ssize_t xdpi = 0, ydpi = 0;
     Py_ssize_t subsampling = -1; /* -1=default, 0=none, 1=medium, 2=high */
+    Py_ssize_t restart_marker_blocks = 0;
+    Py_ssize_t restart_marker_rows = 0;
     PyObject *qtables = NULL;
     unsigned int *qarrays = NULL;
     int qtablesLen = 0;
@@ -1057,24 +1095,28 @@ PyImaging_JpegEncoderNew(PyObject *self, PyObject *args) {
 
     if (!PyArg_ParseTuple(
             args,
-            "ss|nnnnnnnnOz#y#y#",
+            "ss|nnnnpnnnnnnOz#y#y#",
             &mode,
             &rawmode,
             &quality,
             &progressive,
             &smooth,
             &optimize,
+            &keep_rgb,
             &streamtype,
             &xdpi,
             &ydpi,
             &subsampling,
+            &restart_marker_blocks,
+            &restart_marker_rows,
             &qtables,
             &comment,
             &comment_size,
             &extra,
             &extra_size,
             &rawExif,
-            &rawExifLen)) {
+            &rawExifLen
+        )) {
         return NULL;
     }
 
@@ -1144,24 +1186,27 @@ PyImaging_JpegEncoderNew(PyObject *self, PyObject *args) {
 
     encoder->encode = ImagingJpegEncode;
 
-    strncpy(((JPEGENCODERSTATE *)encoder->state.context)->rawmode, rawmode, 8);
-
-    ((JPEGENCODERSTATE *)encoder->state.context)->quality = quality;
-    ((JPEGENCODERSTATE *)encoder->state.context)->qtables = qarrays;
-    ((JPEGENCODERSTATE *)encoder->state.context)->qtablesLen = qtablesLen;
-    ((JPEGENCODERSTATE *)encoder->state.context)->subsampling = subsampling;
-    ((JPEGENCODERSTATE *)encoder->state.context)->progressive = progressive;
-    ((JPEGENCODERSTATE *)encoder->state.context)->smooth = smooth;
-    ((JPEGENCODERSTATE *)encoder->state.context)->optimize = optimize;
-    ((JPEGENCODERSTATE *)encoder->state.context)->streamtype = streamtype;
-    ((JPEGENCODERSTATE *)encoder->state.context)->xdpi = xdpi;
-    ((JPEGENCODERSTATE *)encoder->state.context)->ydpi = ydpi;
-    ((JPEGENCODERSTATE *)encoder->state.context)->comment = comment;
-    ((JPEGENCODERSTATE *)encoder->state.context)->comment_size = comment_size;
-    ((JPEGENCODERSTATE *)encoder->state.context)->extra = extra;
-    ((JPEGENCODERSTATE *)encoder->state.context)->extra_size = extra_size;
-    ((JPEGENCODERSTATE *)encoder->state.context)->rawExif = rawExif;
-    ((JPEGENCODERSTATE *)encoder->state.context)->rawExifLen = rawExifLen;
+    JPEGENCODERSTATE *jpeg_encoder_state = (JPEGENCODERSTATE *)encoder->state.context;
+    strncpy(jpeg_encoder_state->rawmode, rawmode, 8);
+    jpeg_encoder_state->keep_rgb = keep_rgb;
+    jpeg_encoder_state->quality = quality;
+    jpeg_encoder_state->qtables = qarrays;
+    jpeg_encoder_state->qtablesLen = qtablesLen;
+    jpeg_encoder_state->subsampling = subsampling;
+    jpeg_encoder_state->progressive = progressive;
+    jpeg_encoder_state->smooth = smooth;
+    jpeg_encoder_state->optimize = optimize;
+    jpeg_encoder_state->streamtype = streamtype;
+    jpeg_encoder_state->xdpi = xdpi;
+    jpeg_encoder_state->ydpi = ydpi;
+    jpeg_encoder_state->restart_marker_blocks = restart_marker_blocks;
+    jpeg_encoder_state->restart_marker_rows = restart_marker_rows;
+    jpeg_encoder_state->comment = comment;
+    jpeg_encoder_state->comment_size = comment_size;
+    jpeg_encoder_state->extra = extra;
+    jpeg_encoder_state->extra_size = extra_size;
+    jpeg_encoder_state->rawExif = rawExif;
+    jpeg_encoder_state->rawExifLen = rawExifLen;
 
     return (PyObject *)encoder;
 }
@@ -1239,7 +1284,8 @@ PyImaging_Jpeg2KEncoderNew(PyObject *self, PyObject *args) {
             &fd,
             &comment,
             &comment_size,
-            &plt)) {
+            &plt
+        )) {
         return NULL;
     }
 
@@ -1296,7 +1342,8 @@ PyImaging_Jpeg2KEncoderNew(PyObject *self, PyObject *args) {
 
     j2k_decode_coord_tuple(offset, &context->offset_x, &context->offset_y);
     j2k_decode_coord_tuple(
-        tile_offset, &context->tile_offset_x, &context->tile_offset_y);
+        tile_offset, &context->tile_offset_x, &context->tile_offset_y
+    );
     j2k_decode_coord_tuple(tile_size, &context->tile_size_x, &context->tile_size_y);
 
     /* Error on illegal tile offsets */
@@ -1306,7 +1353,8 @@ PyImaging_Jpeg2KEncoderNew(PyObject *self, PyObject *args) {
             PyErr_SetString(
                 PyExc_ValueError,
                 "JPEG 2000 tile offset too small; top left tile must "
-                "intersect image area");
+                "intersect image area"
+            );
             Py_DECREF(encoder);
             return NULL;
         }
@@ -1314,8 +1362,8 @@ PyImaging_Jpeg2KEncoderNew(PyObject *self, PyObject *args) {
         if (context->tile_offset_x > context->offset_x ||
             context->tile_offset_y > context->offset_y) {
             PyErr_SetString(
-                PyExc_ValueError,
-                "JPEG 2000 tile offset too large to cover image area");
+                PyExc_ValueError, "JPEG 2000 tile offset too large to cover image area"
+            );
             Py_DECREF(encoder);
             return NULL;
         }
@@ -1324,9 +1372,7 @@ PyImaging_Jpeg2KEncoderNew(PyObject *self, PyObject *args) {
     if (comment && comment_size > 0) {
         /* Size is stored as as an uint16, subtract 4 bytes for the header */
         if (comment_size >= 65532) {
-            PyErr_SetString(
-                PyExc_ValueError,
-                "JPEG 2000 comment is too long");
+            PyErr_SetString(PyExc_ValueError, "JPEG 2000 comment is too long");
             Py_DECREF(encoder);
             return NULL;
         }
@@ -1351,7 +1397,8 @@ PyImaging_Jpeg2KEncoderNew(PyObject *self, PyObject *args) {
 
     j2k_decode_coord_tuple(cblk_size, &context->cblk_width, &context->cblk_height);
     j2k_decode_coord_tuple(
-        precinct_size, &context->precinct_width, &context->precinct_height);
+        precinct_size, &context->precinct_width, &context->precinct_height
+    );
 
     context->irreversible = PyObject_IsTrue(irreversible);
     context->progression = prog_order;
@@ -1364,10 +1411,3 @@ PyImaging_Jpeg2KEncoderNew(PyObject *self, PyObject *args) {
 }
 
 #endif
-
-/*
- * Local Variables:
- * c-basic-offset: 4
- * End:
- *
- */
diff --git a/src/libImaging/Access.c b/src/libImaging/Access.c
index f00939da0..1c1937105 100644
--- a/src/libImaging/Access.c
+++ b/src/libImaging/Access.c
@@ -12,8 +12,8 @@
 #include "Imaging.h"
 
 /* use make_hash.py from the pillow-scripts repository to calculate these values */
-#define ACCESS_TABLE_SIZE 27
-#define ACCESS_TABLE_HASH 33051
+#define ACCESS_TABLE_SIZE 35
+#define ACCESS_TABLE_HASH 8940
 
 static struct ImagingAccessInstance access_table[ACCESS_TABLE_SIZE];
 
@@ -36,7 +36,8 @@ add_item(const char *mode) {
             "AccessInit: hash collision: %d for both %s and %s\n",
             i,
             mode,
-            access_table[i].mode);
+            access_table[i].mode
+        );
         exit(1);
     }
     access_table[i].mode = mode;
@@ -46,22 +47,11 @@ add_item(const char *mode) {
 /* fetch individual pixel */
 
 static void
-get_pixel(Imaging im, int x, int y, void *color) {
+get_pixel_32_2bands(Imaging im, int x, int y, void *color) {
     char *out = color;
-
-    /* generic pixel access*/
-
-    if (im->image8) {
-        out[0] = im->image8[y][x];
-    } else {
-        UINT8 *p = (UINT8 *)&im->image32[y][x];
-        if (im->type == IMAGING_TYPE_UINT8 && im->bands == 2) {
-            out[0] = p[0];
-            out[1] = p[3];
-            return;
-        }
-        memcpy(out, p, im->pixelsize);
-    }
+    UINT8 *p = (UINT8 *)&im->image32[y][x];
+    out[0] = p[0];
+    out[1] = p[3];
 }
 
 static void
@@ -93,9 +83,28 @@ get_pixel_16B(Imaging im, int x, int y, void *color) {
 }
 
 static void
-get_pixel_16(Imaging im, int x, int y, void *color) {
-    UINT8 *in = (UINT8 *)&im->image[y][x + x];
-    memcpy(color, in, sizeof(UINT16));
+get_pixel_BGR15(Imaging im, int x, int y, void *color) {
+    UINT8 *in = (UINT8 *)&im->image8[y][x * 2];
+    UINT16 pixel = in[0] + (in[1] << 8);
+    char *out = color;
+    out[0] = (pixel & 31) * 255 / 31;
+    out[1] = ((pixel >> 5) & 31) * 255 / 31;
+    out[2] = ((pixel >> 10) & 31) * 255 / 31;
+}
+
+static void
+get_pixel_BGR16(Imaging im, int x, int y, void *color) {
+    UINT8 *in = (UINT8 *)&im->image8[y][x * 2];
+    UINT16 pixel = in[0] + (in[1] << 8);
+    char *out = color;
+    out[0] = (pixel & 31) * 255 / 31;
+    out[1] = ((pixel >> 5) & 63) * 255 / 63;
+    out[2] = ((pixel >> 11) & 31) * 255 / 31;
+}
+
+static void
+get_pixel_BGR24(Imaging im, int x, int y, void *color) {
+    memcpy(color, &im->image8[y][x * 3], sizeof(UINT8) * 3);
 }
 
 static void
@@ -127,15 +136,6 @@ get_pixel_32B(Imaging im, int x, int y, void *color) {
 
 /* store individual pixel */
 
-static void
-put_pixel(Imaging im, int x, int y, const void *color) {
-    if (im->image8) {
-        im->image8[y][x] = *((UINT8 *)color);
-    } else {
-        memcpy(&im->image32[y][x], color, sizeof(INT32));
-    }
-}
-
 static void
 put_pixel_8(Imaging im, int x, int y, const void *color) {
     im->image8[y][x] = *((UINT8 *)color);
@@ -154,6 +154,16 @@ put_pixel_16B(Imaging im, int x, int y, const void *color) {
     out[1] = in[0];
 }
 
+static void
+put_pixel_BGR1516(Imaging im, int x, int y, const void *color) {
+    memcpy(&im->image8[y][x * 2], color, 2);
+}
+
+static void
+put_pixel_BGR24(Imaging im, int x, int y, const void *color) {
+    memcpy(&im->image8[y][x * 3], color, 3);
+}
+
 static void
 put_pixel_32L(Imaging im, int x, int y, const void *color) {
     memcpy(&im->image8[y][x * 4], color, 4);
@@ -175,29 +185,36 @@ put_pixel_32(Imaging im, int x, int y, const void *color) {
 }
 
 void
-ImagingAccessInit() {
-#define ADD(mode_, get_pixel_, put_pixel_)        \
-    {                                             \
-        ImagingAccess access = add_item(mode_);   \
-        access->get_pixel = get_pixel_;           \
-        access->put_pixel = put_pixel_;           \
+ImagingAccessInit(void) {
+#define ADD(mode_, get_pixel_, put_pixel_)      \
+    {                                           \
+        ImagingAccess access = add_item(mode_); \
+        access->get_pixel = get_pixel_;         \
+        access->put_pixel = put_pixel_;         \
     }
 
     /* populate access table */
     ADD("1", get_pixel_8, put_pixel_8);
     ADD("L", get_pixel_8, put_pixel_8);
-    ADD("LA", get_pixel, put_pixel);
-    ADD("La", get_pixel, put_pixel);
+    ADD("LA", get_pixel_32_2bands, put_pixel_32);
+    ADD("La", get_pixel_32_2bands, put_pixel_32);
     ADD("I", get_pixel_32, put_pixel_32);
     ADD("I;16", get_pixel_16L, put_pixel_16L);
     ADD("I;16L", get_pixel_16L, put_pixel_16L);
     ADD("I;16B", get_pixel_16B, put_pixel_16B);
-    ADD("I;16N", get_pixel_16, put_pixel_16L);
+#ifdef WORDS_BIGENDIAN
+    ADD("I;16N", get_pixel_16B, put_pixel_16B);
+#else
+    ADD("I;16N", get_pixel_16L, put_pixel_16L);
+#endif
     ADD("I;32L", get_pixel_32L, put_pixel_32L);
     ADD("I;32B", get_pixel_32B, put_pixel_32B);
     ADD("F", get_pixel_32, put_pixel_32);
     ADD("P", get_pixel_8, put_pixel_8);
-    ADD("PA", get_pixel, put_pixel);
+    ADD("PA", get_pixel_32_2bands, put_pixel_32);
+    ADD("BGR;15", get_pixel_BGR15, put_pixel_BGR1516);
+    ADD("BGR;16", get_pixel_BGR16, put_pixel_BGR1516);
+    ADD("BGR;24", get_pixel_BGR24, put_pixel_BGR24);
     ADD("RGB", get_pixel_32, put_pixel_32);
     ADD("RGBA", get_pixel_32, put_pixel_32);
     ADD("RGBa", get_pixel_32, put_pixel_32);
diff --git a/src/libImaging/BcnDecode.c b/src/libImaging/BcnDecode.c
index a57b74b61..9a41febc7 100644
--- a/src/libImaging/BcnDecode.c
+++ b/src/libImaging/BcnDecode.c
@@ -83,7 +83,6 @@ decode_bc1_color(rgba *dst, const UINT8 *src, int separate_alpha) {
     g1 = p[1].g;
     b1 = p[1].b;
 
-
     /* NOTE: BC2 and BC3 reuse BC1 color blocks but always act like c0 > c1 */
     if (col.c0 > col.c1 || separate_alpha) {
         p[2].r = (2 * r0 + 1 * r1) / 3;
@@ -118,8 +117,8 @@ decode_bc3_alpha(char *dst, const UINT8 *src, int stride, int o, int sign) {
     if (sign == 1) {
         bc5s_alpha b;
         memcpy(&b, src, sizeof(bc5s_alpha));
-        a0 = (b.a0 + 255) / 2;
-        a1 = (b.a1 + 255) / 2;
+        a0 = b.a0 + 128;
+        a1 = b.a1 + 128;
         lut1 = b.lut[0] | (b.lut[1] << 8) | (b.lut[2] << 16);
         lut2 = b.lut[3] | (b.lut[4] << 8) | (b.lut[5] << 16);
     } else {
@@ -244,7 +243,8 @@ static const bc7_mode_info bc7_modes[] = {
     {1, 0, 2, 1, 5, 6, 0, 0, 2, 3},
     {1, 0, 2, 0, 7, 8, 0, 0, 2, 2},
     {1, 0, 0, 0, 7, 7, 1, 0, 4, 0},
-    {2, 6, 0, 0, 5, 5, 1, 0, 2, 0}};
+    {2, 6, 0, 0, 5, 5, 1, 0, 2, 0}
+};
 
 /* Subset indices:
    Table.P2, 1 bit per index */
@@ -255,7 +255,8 @@ static const UINT16 bc7_si2[] = {
     0x718e, 0x399c, 0xaaaa, 0xf0f0, 0x5a5a, 0x33cc, 0x3c3c, 0x55aa, 0x9696, 0xa55a,
     0x73ce, 0x13c8, 0x324c, 0x3bdc, 0x6996, 0xc33c, 0x9966, 0x0660, 0x0272, 0x04e4,
     0x4e40, 0x2720, 0xc936, 0x936c, 0x39c6, 0x639c, 0x9336, 0x9cc6, 0x817e, 0xe718,
-    0xccf0, 0x0fcc, 0x7744, 0xee22};
+    0xccf0, 0x0fcc, 0x7744, 0xee22
+};
 
 /* Table.P3, 2 bits per index */
 static const UINT32 bc7_si3[] = {
@@ -268,20 +269,23 @@ static const UINT32 bc7_si3[] = {
     0x66660000, 0xa5a0a5a0, 0x50a050a0, 0x69286928, 0x44aaaa44, 0x66666600, 0xaa444444,
     0x54a854a8, 0x95809580, 0x96969600, 0xa85454a8, 0x80959580, 0xaa141414, 0x96960000,
     0xaaaa1414, 0xa05050a0, 0xa0a5a5a0, 0x96000000, 0x40804080, 0xa9a8a9a8, 0xaaaaaa44,
-    0x2a4a5254};
+    0x2a4a5254
+};
 
 /* Anchor indices:
    Table.A2 */
-static const char bc7_ai0[] = {
-    15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 2,  8, 2, 2, 8,
-    8,  15, 2,  8,  2,  2,  8,  8,  2,  2,  15, 15, 6,  8,  2,  8,  15, 15, 2, 8, 2, 2,
-    2,  15, 15, 6,  6,  2,  6,  8,  15, 15, 2,  2,  15, 15, 15, 15, 15, 2,  2, 15};
+static const char bc7_ai0[] = {15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+                               15, 15, 15, 15, 2,  8,  2,  2,  8,  8,  15, 2,  8,
+                               2,  2,  8,  8,  2,  2,  15, 15, 6,  8,  2,  8,  15,
+                               15, 2,  8,  2,  2,  2,  15, 15, 6,  6,  2,  6,  8,
+                               15, 15, 2,  2,  15, 15, 15, 15, 15, 2,  2,  15};
 
 /* Table.A3a */
-static const char bc7_ai1[] = {
-    3,  3,  15, 15, 8, 3,  15, 15, 8,  8,  6, 6,  6, 5,  3, 3,  3,  3,  8,  15, 3,  3,
-    6,  10, 5,  8,  8, 6,  8,  5,  15, 15, 8, 15, 3, 5,  6, 10, 8,  15, 15, 3,  15, 5,
-    15, 15, 15, 15, 3, 15, 5,  5,  5,  8,  5, 10, 5, 10, 8, 13, 15, 12, 3,  3};
+static const char bc7_ai1[] = {3,  3,  15, 15, 8,  3,  15, 15, 8,  8,  6,  6,  6,
+                               5,  3,  3,  3,  3,  8,  15, 3,  3,  6,  10, 5,  8,
+                               8,  6,  8,  5,  15, 15, 8,  15, 3,  5,  6,  10, 8,
+                               15, 15, 3,  15, 5,  15, 15, 15, 15, 3,  15, 5,  5,
+                               5,  8,  5,  10, 5,  10, 8,  13, 15, 12, 3,  3};
 
 /* Table.A3b */
 static const char bc7_ai2[] = {15, 8,  8,  3,  15, 15, 3,  8,  15, 15, 15, 15, 15,
@@ -294,7 +298,8 @@ static const char bc7_ai2[] = {15, 8,  8,  3,  15, 15, 3,  8,  15, 15, 15, 15, 1
 static const char bc7_weights2[] = {0, 21, 43, 64};
 static const char bc7_weights3[] = {0, 9, 18, 27, 37, 46, 55, 64};
 static const char bc7_weights4[] = {
-    0, 4, 9, 13, 17, 21, 26, 30, 34, 38, 43, 47, 51, 55, 60, 64};
+    0, 4, 9, 13, 17, 21, 26, 30, 34, 38, 43, 47, 51, 55, 60, 64
+};
 
 static const char *
 bc7_get_weights(int n) {
@@ -354,8 +359,7 @@ decode_bc7_block(rgba *col, const UINT8 *src) {
         }
         return;
     }
-    while (!(mode & (1 << bit++)))
-        ;
+    while (!(mode & (1 << bit++)));
     mode = bit - 1;
     info = &bc7_modes[mode];
     /* color selection bits: {subset}{endpoint} */
@@ -528,7 +532,8 @@ static const bc6_mode_info bc6_modes[] = {
     {1, 0, 0, 10, 10, 10, 10},
     {1, 1, 0, 11, 9, 9, 9},
     {1, 1, 0, 12, 8, 8, 8},
-    {1, 1, 0, 16, 4, 4, 4}};
+    {1, 1, 0, 16, 4, 4, 4}
+};
 
 /* Table.F, encoded as a sequence of bit indices */
 static const UINT8 bc6_bit_packings[][75] = {
@@ -546,7 +551,7 @@ static const UINT8 bc6_bit_packings[][75] = {
      21,  22,  23,  24,  25,  32,  33,  34,  35,  36,  37,  38,  39,  40,  41,
      48,  49,  50,  51,  52,  10,  112, 113, 114, 115, 64,  65,  66,  67,  26,
      176, 160, 161, 162, 163, 80,  81,  82,  83,  42,  177, 128, 129, 130, 131,
-     96,  97, 98,  99,  100, 178, 144, 145, 146, 147, 148, 179},
+     96,  97,  98,  99,  100, 178, 144, 145, 146, 147, 148, 179},
     {0,  1,   2,   3,   4,   5,   6,   7,   8,   9,   16,  17,  18,  19,  20,
      21, 22,  23,  24,  25,  32,  33,  34,  35,  36,  37,  38,  39,  40,  41,
      48, 49,  50,  51,  10,  164, 112, 113, 114, 115, 64,  65,  66,  67,  68,
@@ -593,7 +598,8 @@ static const UINT8 bc6_bit_packings[][75] = {
      64, 65, 66, 67, 68, 69, 70, 71, 27, 26, 80, 81, 82, 83, 84, 85, 86, 87, 43, 42},
     {0,  1,  2,  3,  4,  5,  6,  7,  8,  9,  16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
      32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 48, 49, 50, 51, 15, 14, 13, 12, 11, 10,
-     64, 65, 66, 67, 31, 30, 29, 28, 27, 26, 80, 81, 82, 83, 47, 46, 45, 44, 43, 42}};
+     64, 65, 66, 67, 31, 30, 29, 28, 27, 26, 80, 81, 82, 83, 47, 46, 45, 44, 43, 42}
+};
 
 static void
 bc6_sign_extend(UINT16 *v, int prec) {
@@ -684,7 +690,7 @@ bc6_clamp(float value) {
     } else if (value > 1.0f) {
         return 255;
     } else {
-        return (UINT8) (value * 255.0f);
+        return (UINT8)(value * 255.0f);
     }
 }
 
@@ -826,7 +832,14 @@ put_block(Imaging im, ImagingCodecState state, const char *col, int sz, int C) {
 
 static int
 decode_bcn(
-    Imaging im, ImagingCodecState state, const UINT8 *src, int bytes, int N, int C, char *pixel_format) {
+    Imaging im,
+    ImagingCodecState state,
+    const UINT8 *src,
+    int bytes,
+    int N,
+    int C,
+    char *pixel_format
+) {
     int ymax = state->ysize + state->yoff;
     const UINT8 *ptr = src;
     switch (N) {
@@ -849,11 +862,12 @@ decode_bcn(
         DECODE_LOOP(2, 16, rgba);
         DECODE_LOOP(3, 16, rgba);
         DECODE_LOOP(4, 8, lum);
-        case 5:
+        case 5: {
+            int sign = strcmp(pixel_format, "BC5S") == 0 ? 1 : 0;
             while (bytes >= 16) {
                 rgba col[16];
-                memset(col, 0, 16 * sizeof(col[0]));
-                decode_bc5_block(col, ptr, strcmp(pixel_format, "BC5S") == 0 ? 1 : 0);
+                memset(col, sign ? 128 : 0, 16 * sizeof(col[0]));
+                decode_bc5_block(col, ptr, sign);
                 put_block(im, state, (const char *)col, sizeof(col[0]), C);
                 ptr += 16;
                 bytes -= 16;
@@ -862,10 +876,12 @@ decode_bcn(
                 }
             }
             break;
-        case 6:
+        }
+        case 6: {
+            int sign = strcmp(pixel_format, "BC6HS") == 0 ? 1 : 0;
             while (bytes >= 16) {
                 rgba col[16];
-                decode_bc6_block(col, ptr, strcmp(pixel_format, "BC6HS") == 0 ? 1 : 0);
+                decode_bc6_block(col, ptr, sign);
                 put_block(im, state, (const char *)col, sizeof(col[0]), C);
                 ptr += 16;
                 bytes -= 16;
@@ -874,7 +890,8 @@ decode_bcn(
                 }
             }
             break;
-        DECODE_LOOP(7, 16, rgba);
+        }
+            DECODE_LOOP(7, 16, rgba);
 #undef DECODE_LOOP
     }
     return (int)(ptr - src);
diff --git a/src/libImaging/BoxBlur.c b/src/libImaging/BoxBlur.c
index 5afe7cf50..ed91541fe 100644
--- a/src/libImaging/BoxBlur.c
+++ b/src/libImaging/BoxBlur.c
@@ -13,7 +13,8 @@ void static inline ImagingLineBoxBlur32(
     int edgeA,
     int edgeB,
     UINT32 ww,
-    UINT32 fw) {
+    UINT32 fw
+) {
     int x;
     UINT32 acc[4];
     UINT32 bulk[4];
@@ -109,7 +110,8 @@ void static inline ImagingLineBoxBlur8(
     int edgeA,
     int edgeB,
     UINT32 ww,
-    UINT32 fw) {
+    UINT32 fw
+) {
     int x;
     UINT32 acc;
     UINT32 bulk;
@@ -198,7 +200,8 @@ ImagingHorizontalBoxBlur(Imaging imOut, Imaging imIn, float floatRadius) {
                 edgeA,
                 edgeB,
                 ww,
-                fw);
+                fw
+            );
             if (imIn == imOut) {
                 // Commit.
                 memcpy(imOut->image8[y], lineOut, imIn->xsize);
@@ -214,7 +217,8 @@ ImagingHorizontalBoxBlur(Imaging imOut, Imaging imIn, float floatRadius) {
                 edgeA,
                 edgeB,
                 ww,
-                fw);
+                fw
+            );
             if (imIn == imOut) {
                 // Commit.
                 memcpy(imOut->image32[y], lineOut, imIn->xsize * 4);
@@ -230,14 +234,17 @@ ImagingHorizontalBoxBlur(Imaging imOut, Imaging imIn, float floatRadius) {
 }
 
 Imaging
-ImagingBoxBlur(Imaging imOut, Imaging imIn, float radius, int n) {
+ImagingBoxBlur(Imaging imOut, Imaging imIn, float xradius, float yradius, int n) {
     int i;
     Imaging imTransposed;
 
+    if (imOut->xsize == 0 || imOut->ysize == 0) {
+        return imOut;
+    }
     if (n < 1) {
         return ImagingError_ValueError("number of passes must be greater than zero");
     }
-    if (radius < 0) {
+    if (xradius < 0 || yradius < 0) {
         return ImagingError_ValueError("radius must be >= 0");
     }
 
@@ -258,35 +265,45 @@ ImagingBoxBlur(Imaging imOut, Imaging imIn, float radius, int n) {
         return ImagingError_ModeError();
     }
 
-    imTransposed = ImagingNewDirty(imIn->mode, imIn->ysize, imIn->xsize);
-    if (!imTransposed) {
-        return NULL;
-    }
-
     /* Apply blur in one dimension.
        Use imOut as a destination at first pass,
        then use imOut as a source too. */
-    ImagingHorizontalBoxBlur(imOut, imIn, radius);
-    for (i = 1; i < n; i++) {
-        ImagingHorizontalBoxBlur(imOut, imOut, radius);
-    }
-    /* Transpose result for blur in another direction. */
-    ImagingTranspose(imTransposed, imOut);
 
-    /* Reuse imTransposed as a source and destination there. */
-    for (i = 0; i < n; i++) {
-        ImagingHorizontalBoxBlur(imTransposed, imTransposed, radius);
+    if (xradius != 0) {
+        ImagingHorizontalBoxBlur(imOut, imIn, xradius);
+        for (i = 1; i < n; i++) {
+            ImagingHorizontalBoxBlur(imOut, imOut, xradius);
+        }
     }
-    /* Restore original orientation. */
-    ImagingTranspose(imOut, imTransposed);
+    if (yradius != 0) {
+        imTransposed = ImagingNewDirty(imIn->mode, imIn->ysize, imIn->xsize);
+        if (!imTransposed) {
+            return NULL;
+        }
 
-    ImagingDelete(imTransposed);
+        /* Transpose result for blur in another direction. */
+        ImagingTranspose(imTransposed, xradius == 0 ? imIn : imOut);
+
+        /* Reuse imTransposed as a source and destination there. */
+        for (i = 0; i < n; i++) {
+            ImagingHorizontalBoxBlur(imTransposed, imTransposed, yradius);
+        }
+        /* Restore original orientation. */
+        ImagingTranspose(imOut, imTransposed);
+
+        ImagingDelete(imTransposed);
+    }
+    if (xradius == 0 && yradius == 0) {
+        if (!ImagingCopy2(imOut, imIn)) {
+            return NULL;
+        }
+    }
 
     return imOut;
 }
 
-Imaging
-ImagingGaussianBlur(Imaging imOut, Imaging imIn, float radius, int passes) {
+static float
+_gaussian_blur_radius(float radius, int passes) {
     float sigma2, L, l, a;
 
     sigma2 = radius * radius / passes;
@@ -299,5 +316,18 @@ ImagingGaussianBlur(Imaging imOut, Imaging imIn, float radius, int passes) {
     a = (2 * l + 1) * (l * (l + 1) - 3 * sigma2);
     a /= 6 * (sigma2 - (l + 1) * (l + 1));
 
-    return ImagingBoxBlur(imOut, imIn, l + a, passes);
+    return l + a;
+}
+
+Imaging
+ImagingGaussianBlur(
+    Imaging imOut, Imaging imIn, float xradius, float yradius, int passes
+) {
+    return ImagingBoxBlur(
+        imOut,
+        imIn,
+        _gaussian_blur_radius(xradius, passes),
+        _gaussian_blur_radius(yradius, passes),
+        passes
+    );
 }
diff --git a/src/libImaging/Chops.c b/src/libImaging/Chops.c
index f9c005efe..f326d402f 100644
--- a/src/libImaging/Chops.c
+++ b/src/libImaging/Chops.c
@@ -142,7 +142,8 @@ ImagingChopSoftLight(Imaging imIn1, Imaging imIn2) {
     CHOP2(
         (((255 - in1[x]) * (in1[x] * in2[x])) / 65536) +
             (in1[x] * (255 - ((255 - in1[x]) * (255 - in2[x]) / 255))) / 255,
-        NULL);
+        NULL
+    );
 }
 
 Imaging
@@ -150,7 +151,8 @@ ImagingChopHardLight(Imaging imIn1, Imaging imIn2) {
     CHOP2(
         (in2[x] < 128) ? ((in1[x] * in2[x]) / 127)
                        : 255 - (((255 - in2[x]) * (255 - in1[x])) / 127),
-        NULL);
+        NULL
+    );
 }
 
 Imaging
@@ -158,5 +160,6 @@ ImagingOverlay(Imaging imIn1, Imaging imIn2) {
     CHOP2(
         (in1[x] < 128) ? ((in1[x] * in2[x]) / 127)
                        : 255 - (((255 - in1[x]) * (255 - in2[x])) / 127),
-        NULL);
+        NULL
+    );
 }
diff --git a/src/libImaging/ColorLUT.c b/src/libImaging/ColorLUT.c
index aee7cda06..5559de689 100644
--- a/src/libImaging/ColorLUT.c
+++ b/src/libImaging/ColorLUT.c
@@ -63,7 +63,8 @@ ImagingColorLUT3D_linear(
     int size1D,
     int size2D,
     int size3D,
-    INT16 *table) {
+    INT16 *table
+) {
     /* This float to int conversion doesn't have rounding
        error compensation (+0.5) for two reasons:
        1. As we don't hit the highest value,
@@ -112,7 +113,8 @@ ImagingColorLUT3D_linear(
                                            index2D >> SCALE_BITS,
                                            index3D >> SCALE_BITS,
                                            size1D,
-                                           size1D_2D);
+                                           size1D_2D
+                                       );
             INT16 result[4], left[4], right[4];
             INT16 leftleft[4], leftright[4], rightleft[4], rightright[4];
 
@@ -123,19 +125,22 @@ ImagingColorLUT3D_linear(
                     leftright,
                     &table[idx + size1D * 3],
                     &table[idx + size1D * 3 + 3],
-                    shift1D);
+                    shift1D
+                );
                 interpolate3(left, leftleft, leftright, shift2D);
 
                 interpolate3(
                     rightleft,
                     &table[idx + size1D_2D * 3],
                     &table[idx + size1D_2D * 3 + 3],
-                    shift1D);
+                    shift1D
+                );
                 interpolate3(
                     rightright,
                     &table[idx + size1D_2D * 3 + size1D * 3],
                     &table[idx + size1D_2D * 3 + size1D * 3 + 3],
-                    shift1D);
+                    shift1D
+                );
                 interpolate3(right, rightleft, rightright, shift2D);
 
                 interpolate3(result, left, right, shift3D);
@@ -144,7 +149,8 @@ ImagingColorLUT3D_linear(
                     clip8(result[0]),
                     clip8(result[1]),
                     clip8(result[2]),
-                    rowIn[x * 4 + 3]);
+                    rowIn[x * 4 + 3]
+                );
                 memcpy(rowOut + x * sizeof(v), &v, sizeof(v));
             }
 
@@ -155,19 +161,22 @@ ImagingColorLUT3D_linear(
                     leftright,
                     &table[idx + size1D * 4],
                     &table[idx + size1D * 4 + 4],
-                    shift1D);
+                    shift1D
+                );
                 interpolate4(left, leftleft, leftright, shift2D);
 
                 interpolate4(
                     rightleft,
                     &table[idx + size1D_2D * 4],
                     &table[idx + size1D_2D * 4 + 4],
-                    shift1D);
+                    shift1D
+                );
                 interpolate4(
                     rightright,
                     &table[idx + size1D_2D * 4 + size1D * 4],
                     &table[idx + size1D_2D * 4 + size1D * 4 + 4],
-                    shift1D);
+                    shift1D
+                );
                 interpolate4(right, rightleft, rightright, shift2D);
 
                 interpolate4(result, left, right, shift3D);
@@ -176,7 +185,8 @@ ImagingColorLUT3D_linear(
                     clip8(result[0]),
                     clip8(result[1]),
                     clip8(result[2]),
-                    clip8(result[3]));
+                    clip8(result[3])
+                );
                 memcpy(rowOut + x * sizeof(v), &v, sizeof(v));
             }
         }
diff --git a/src/libImaging/Convert.c b/src/libImaging/Convert.c
index 7fe24a639..c8f234261 100644
--- a/src/libImaging/Convert.c
+++ b/src/libImaging/Convert.c
@@ -250,6 +250,24 @@ rgb2i(UINT8 *out_, const UINT8 *in, int xsize) {
     }
 }
 
+static void
+rgb2i16l(UINT8 *out_, const UINT8 *in, int xsize) {
+    int x;
+    for (x = 0; x < xsize; x++, in += 4) {
+        *out_++ = L24(in) >> 16;
+        *out_++ = 0;
+    }
+}
+
+static void
+rgb2i16b(UINT8 *out_, const UINT8 *in, int xsize) {
+    int x;
+    for (x = 0; x < xsize; x++, in += 4) {
+        *out_++ = 0;
+        *out_++ = L24(in) >> 16;
+    }
+}
+
 static void
 rgb2f(UINT8 *out_, const UINT8 *in, int xsize) {
     int x;
@@ -499,26 +517,27 @@ rgba2rgb_(UINT8 *out, const UINT8 *in, int xsize) {
 }
 
 /*
- * Conversion of RGB + single transparent color to RGBA,
- * where any pixel that matches the color will have the
- * alpha channel set to 0
+ * Conversion of RGB + single transparent color either to
+ * RGBA or LA, where any pixel matching the color will have the alpha channel set to 0,
+ * or RGBa or La, where any pixel matching the color will have all channels set to 0
  */
 
 static void
-rgbT2rgba(UINT8 *out, int xsize, int r, int g, int b) {
+rgbT2a(UINT8 *out, UINT8 *in, int xsize, int r, int g, int b, int premultiplied) {
 #ifdef WORDS_BIGENDIAN
     UINT32 trns = ((r & 0xff) << 24) | ((g & 0xff) << 16) | ((b & 0xff) << 8) | 0xff;
-    UINT32 repl = trns & 0xffffff00;
+    UINT32 repl = premultiplied ? 0 : (trns & 0xffffff00);
 #else
-    UINT32 trns = (0xff << 24) | ((b & 0xff) << 16) | ((g & 0xff) << 8) | (r & 0xff);
-    UINT32 repl = trns & 0x00ffffff;
+    UINT32 trns = (0xffU << 24) | ((b & 0xff) << 16) | ((g & 0xff) << 8) | (r & 0xff);
+    UINT32 repl = premultiplied ? 0 : (trns & 0x00ffffff);
 #endif
 
     int i;
 
-    for (i = 0; i < xsize; i++, out += sizeof(trns)) {
+    UINT8 *ref = in != NULL ? in : out;
+    for (i = 0; i < xsize; i++, ref += sizeof(trns), out += sizeof(trns)) {
         UINT32 v;
-        memcpy(&v, out, sizeof(v));
+        memcpy(&v, ref, sizeof(v));
         if (v == trns) {
             memcpy(out, &repl, sizeof(repl));
         }
@@ -564,7 +583,7 @@ rgb2cmyk(UINT8 *out, const UINT8 *in, int xsize) {
     }
 }
 
-static void
+void
 cmyk2rgb(UINT8 *out, const UINT8 *in, int xsize) {
     int x, nk, tmp;
     for (x = 0; x < xsize; x++) {
@@ -878,6 +897,18 @@ I16B_L(UINT8 *out, const UINT8 *in, int xsize) {
     }
 }
 
+static void
+I16_RGB(UINT8 *out, const UINT8 *in, int xsize) {
+    int x;
+    for (x = 0; x < xsize; x++, in += 2) {
+        UINT8 v = in[1] == 0 ? in[0] : 255;
+        *out++ = v;
+        *out++ = v;
+        *out++ = v;
+        *out++ = 255;
+    }
+}
+
 static struct {
     const char *from;
     const char *to;
@@ -929,12 +960,22 @@ static struct {
     {"RGB", "1", rgb2bit},
     {"RGB", "L", rgb2l},
     {"RGB", "LA", rgb2la},
+    {"RGB", "La", rgb2la},
     {"RGB", "I", rgb2i},
+    {"RGB", "I;16", rgb2i16l},
+    {"RGB", "I;16L", rgb2i16l},
+    {"RGB", "I;16B", rgb2i16b},
+#ifdef WORDS_BIGENDIAN
+    {"RGB", "I;16N", rgb2i16b},
+#else
+    {"RGB", "I;16N", rgb2i16l},
+#endif
     {"RGB", "F", rgb2f},
     {"RGB", "BGR;15", rgb2bgr15},
     {"RGB", "BGR;16", rgb2bgr16},
     {"RGB", "BGR;24", rgb2bgr24},
     {"RGB", "RGBA", rgb2rgba},
+    {"RGB", "RGBa", rgb2rgba},
     {"RGB", "RGBX", rgb2rgba},
     {"RGB", "CMYK", rgb2cmyk},
     {"RGB", "YCbCr", ImagingConvertRGB2YCbCr},
@@ -978,6 +1019,7 @@ static struct {
 
     {"I", "I;16", I_I16L},
     {"I;16", "I", I16L_I},
+    {"I;16", "RGB", I16_RGB},
     {"L", "I;16", L_I16L},
     {"I;16", "L", I16L_L},
 
@@ -1002,7 +1044,8 @@ static struct {
     {"I;16L", "F", I16L_F},
     {"I;16B", "F", I16B_F},
 
-    {NULL}};
+    {NULL}
+};
 
 /* FIXME: translate indexed versions to pointer versions below this line */
 
@@ -1013,7 +1056,7 @@ static struct {
 static void
 p2bit(UINT8 *out, const UINT8 *in, int xsize, ImagingPalette palette) {
     int x;
-    /* FIXME: precalculate greyscale palette? */
+    /* FIXME: precalculate grayscale palette? */
     for (x = 0; x < xsize; x++) {
         *out++ = (L(&palette->palette[in[x] * 4]) >= 128000) ? 255 : 0;
     }
@@ -1022,7 +1065,7 @@ p2bit(UINT8 *out, const UINT8 *in, int xsize, ImagingPalette palette) {
 static void
 pa2bit(UINT8 *out, const UINT8 *in, int xsize, ImagingPalette palette) {
     int x;
-    /* FIXME: precalculate greyscale palette? */
+    /* FIXME: precalculate grayscale palette? */
     for (x = 0; x < xsize; x++, in += 4) {
         *out++ = (L(&palette->palette[in[0] * 4]) >= 128000) ? 255 : 0;
     }
@@ -1031,7 +1074,7 @@ pa2bit(UINT8 *out, const UINT8 *in, int xsize, ImagingPalette palette) {
 static void
 p2l(UINT8 *out, const UINT8 *in, int xsize, ImagingPalette palette) {
     int x;
-    /* FIXME: precalculate greyscale palette? */
+    /* FIXME: precalculate grayscale palette? */
     for (x = 0; x < xsize; x++) {
         *out++ = L24(&palette->palette[in[x] * 4]) >> 16;
     }
@@ -1040,7 +1083,7 @@ p2l(UINT8 *out, const UINT8 *in, int xsize, ImagingPalette palette) {
 static void
 pa2l(UINT8 *out, const UINT8 *in, int xsize, ImagingPalette palette) {
     int x;
-    /* FIXME: precalculate greyscale palette? */
+    /* FIXME: precalculate grayscale palette? */
     for (x = 0; x < xsize; x++, in += 4) {
         *out++ = L24(&palette->palette[in[0] * 4]) >> 16;
     }
@@ -1070,7 +1113,7 @@ p2pa(UINT8 *out, const UINT8 *in, int xsize, ImagingPalette palette) {
 static void
 p2la(UINT8 *out, const UINT8 *in, int xsize, ImagingPalette palette) {
     int x;
-    /* FIXME: precalculate greyscale palette? */
+    /* FIXME: precalculate grayscale palette? */
     for (x = 0; x < xsize; x++, out += 4) {
         const UINT8 *rgba = &palette->palette[*in++ * 4];
         out[0] = out[1] = out[2] = L24(rgba) >> 16;
@@ -1081,7 +1124,7 @@ p2la(UINT8 *out, const UINT8 *in, int xsize, ImagingPalette palette) {
 static void
 pa2la(UINT8 *out, const UINT8 *in, int xsize, ImagingPalette palette) {
     int x;
-    /* FIXME: precalculate greyscale palette? */
+    /* FIXME: precalculate grayscale palette? */
     for (x = 0; x < xsize; x++, in += 4, out += 4) {
         out[0] = out[1] = out[2] = L24(&palette->palette[in[0] * 4]) >> 16;
         out[3] = in[3];
@@ -1274,7 +1317,8 @@ frompalette(Imaging imOut, Imaging imIn, const char *mode) {
             (UINT8 *)imOut->image[y],
             (UINT8 *)imIn->image[y],
             imIn->xsize,
-            imIn->palette);
+            imIn->palette
+        );
     }
     ImagingSectionLeave(&cookie);
 
@@ -1286,16 +1330,12 @@ frompalette(Imaging imOut, Imaging imIn, const char *mode) {
 #endif
 static Imaging
 topalette(
-    Imaging imOut,
-    Imaging imIn,
-    const char *mode,
-    ImagingPalette inpalette,
-    int dither) {
+    Imaging imOut, Imaging imIn, const char *mode, ImagingPalette inpalette, int dither
+) {
     ImagingSectionCookie cookie;
     int alpha;
     int x, y;
     ImagingPalette palette = inpalette;
-    ;
 
     /* Map L or RGB/RGBX/RGBA to palette image */
     if (strcmp(imIn->mode, "L") != 0 && strncmp(imIn->mode, "RGB", 3) != 0) {
@@ -1307,7 +1347,14 @@ topalette(
     if (palette == NULL) {
         /* FIXME: make user configurable */
         if (imIn->bands == 1) {
-            palette = ImagingPaletteNew("RGB"); /* Initialised to grey ramp */
+            palette = ImagingPaletteNew("RGB");
+
+            palette->size = 256;
+            int i;
+            for (i = 0; i < 256; i++) {
+                palette->palette[i * 4] = palette->palette[i * 4 + 1] =
+                    palette->palette[i * 4 + 2] = (UINT8)i;
+            }
         } else {
             palette = ImagingPaletteNewBrowser(); /* Standard colour cube */
         }
@@ -1329,9 +1376,9 @@ topalette(
     imOut->palette = ImagingPaletteDuplicate(palette);
 
     if (imIn->bands == 1) {
-        /* greyscale image */
+        /* grayscale image */
 
-        /* Greyscale palette: copy data as is */
+        /* Grayscale palette: copy data as is */
         ImagingSectionEnter(&cookie);
         for (y = 0; y < imIn->ysize; y++) {
             if (alpha) {
@@ -1575,7 +1622,8 @@ tobilevel(Imaging imOut, Imaging imIn) {
 
 static Imaging
 convert(
-    Imaging imOut, Imaging imIn, const char *mode, ImagingPalette palette, int dither) {
+    Imaging imOut, Imaging imIn, const char *mode, ImagingPalette palette, int dither
+) {
     ImagingSectionCookie cookie;
     ImagingShuffler convert;
     int y;
@@ -1628,7 +1676,9 @@ convert(
         return (Imaging)ImagingError_ValueError("conversion not supported");
 #else
         static char buf[100];
-        snprintf(buf, 100, "conversion from %.10s to %.10s not supported", imIn->mode, mode);
+        snprintf(
+            buf, 100, "conversion from %.10s to %.10s not supported", imIn->mode, mode
+        );
         return (Imaging)ImagingError_ValueError(buf);
 #endif
     }
@@ -1662,25 +1712,38 @@ ImagingConvertTransparent(Imaging imIn, const char *mode, int r, int g, int b) {
     ImagingSectionCookie cookie;
     ImagingShuffler convert;
     Imaging imOut = NULL;
+    int premultiplied = 0;
+    // If the transparency matches pixels in the source image, not the converted image
+    UINT8 *source;
+    int source_transparency = 0;
     int y;
 
     if (!imIn) {
         return (Imaging)ImagingError_ModeError();
     }
 
-    if (strcmp(imIn->mode, "RGB") == 0 && strcmp(mode, "RGBA") == 0) {
+    if (strcmp(imIn->mode, "RGB") == 0 &&
+        (strcmp(mode, "RGBA") == 0 || strcmp(mode, "RGBa") == 0)) {
         convert = rgb2rgba;
-    } else if ((strcmp(imIn->mode, "1") == 0 ||
-                strcmp(imIn->mode, "I") == 0 ||
-                strcmp(imIn->mode, "L") == 0
-               ) && (
-                strcmp(mode, "RGBA") == 0 ||
-                strcmp(mode, "LA") == 0
-               )) {
+        if (strcmp(mode, "RGBa") == 0) {
+            premultiplied = 1;
+        }
+    } else if (strcmp(imIn->mode, "RGB") == 0 &&
+               (strcmp(mode, "LA") == 0 || strcmp(mode, "La") == 0)) {
+        convert = rgb2la;
+        source_transparency = 1;
+        if (strcmp(mode, "La") == 0) {
+            premultiplied = 1;
+        }
+    } else if ((strcmp(imIn->mode, "1") == 0 || strcmp(imIn->mode, "I") == 0 ||
+                strcmp(imIn->mode, "I;16") == 0 || strcmp(imIn->mode, "L") == 0) &&
+               (strcmp(mode, "RGBA") == 0 || strcmp(mode, "LA") == 0)) {
         if (strcmp(imIn->mode, "1") == 0) {
             convert = bit2rgb;
         } else if (strcmp(imIn->mode, "I") == 0) {
             convert = i2rgb;
+        } else if (strcmp(imIn->mode, "I;16") == 0) {
+            convert = I16_RGB;
         } else {
             convert = l2rgb;
         }
@@ -1692,7 +1755,8 @@ ImagingConvertTransparent(Imaging imIn, const char *mode, int r, int g, int b) {
             100,
             "conversion from %.10s to %.10s not supported in convert_transparent",
             imIn->mode,
-            mode);
+            mode
+        );
         return (Imaging)ImagingError_ValueError(buf);
     }
 
@@ -1704,7 +1768,9 @@ ImagingConvertTransparent(Imaging imIn, const char *mode, int r, int g, int b) {
     ImagingSectionEnter(&cookie);
     for (y = 0; y < imIn->ysize; y++) {
         (*convert)((UINT8 *)imOut->image[y], (UINT8 *)imIn->image[y], imIn->xsize);
-        rgbT2rgba((UINT8 *)imOut->image[y], imIn->xsize, r, g, b);
+
+        source = source_transparency ? (UINT8 *)imIn->image[y] : NULL;
+        rgbT2a((UINT8 *)imOut->image[y], source, imIn->xsize, r, g, b, premultiplied);
     }
     ImagingSectionLeave(&cookie);
 
diff --git a/src/libImaging/Convert.h b/src/libImaging/Convert.h
new file mode 100644
index 000000000..e688e3018
--- /dev/null
+++ b/src/libImaging/Convert.h
@@ -0,0 +1,2 @@
+extern void
+cmyk2rgb(UINT8 *out, const UINT8 *in, int xsize);
diff --git a/src/libImaging/ConvertYCbCr.c b/src/libImaging/ConvertYCbCr.c
index 142f065e5..285b43327 100644
--- a/src/libImaging/ConvertYCbCr.c
+++ b/src/libImaging/ConvertYCbCr.c
@@ -47,7 +47,8 @@ static INT16 Y_R[] = {
     4019, 4038, 4057, 4076, 4095, 4114, 4133, 4153, 4172, 4191, 4210, 4229, 4248, 4267,
     4286, 4306, 4325, 4344, 4363, 4382, 4401, 4420, 4440, 4459, 4478, 4497, 4516, 4535,
     4554, 4574, 4593, 4612, 4631, 4650, 4669, 4688, 4707, 4727, 4746, 4765, 4784, 4803,
-    4822, 4841, 4861, 4880};
+    4822, 4841, 4861, 4880
+};
 
 static INT16 Y_G[] = {
     0,    38,   75,   113,  150,  188,  225,  263,  301,  338,  376,  413,  451,  488,
@@ -68,7 +69,8 @@ static INT16 Y_G[] = {
     7889, 7927, 7964, 8002, 8040, 8077, 8115, 8152, 8190, 8227, 8265, 8303, 8340, 8378,
     8415, 8453, 8490, 8528, 8566, 8603, 8641, 8678, 8716, 8753, 8791, 8828, 8866, 8904,
     8941, 8979, 9016, 9054, 9091, 9129, 9167, 9204, 9242, 9279, 9317, 9354, 9392, 9430,
-    9467, 9505, 9542, 9580};
+    9467, 9505, 9542, 9580
+};
 
 static INT16 Y_B[] = {
     0,    7,    15,   22,   29,   36,   44,   51,   58,   66,   73,   80,   88,   95,
@@ -89,7 +91,8 @@ static INT16 Y_B[] = {
     1532, 1539, 1547, 1554, 1561, 1569, 1576, 1583, 1591, 1598, 1605, 1612, 1620, 1627,
     1634, 1642, 1649, 1656, 1663, 1671, 1678, 1685, 1693, 1700, 1707, 1715, 1722, 1729,
     1736, 1744, 1751, 1758, 1766, 1773, 1780, 1788, 1795, 1802, 1809, 1817, 1824, 1831,
-    1839, 1846, 1853, 1860};
+    1839, 1846, 1853, 1860
+};
 
 static INT16 Cb_R[] = {
     0,     -10,   -21,   -31,   -42,   -53,   -64,   -75,   -85,   -96,   -107,  -118,
@@ -113,7 +116,8 @@ static INT16 Cb_R[] = {
     -2332, -2342, -2353, -2364, -2375, -2386, -2396, -2407, -2418, -2429, -2440, -2450,
     -2461, -2472, -2483, -2494, -2504, -2515, -2526, -2537, -2548, -2558, -2569, -2580,
     -2591, -2602, -2612, -2623, -2634, -2645, -2656, -2666, -2677, -2688, -2699, -2710,
-    -2720, -2731, -2742, -2753};
+    -2720, -2731, -2742, -2753
+};
 
 static INT16 Cb_G[] = {
     0,     -20,   -41,   -63,   -84,   -105,  -126,  -147,  -169,  -190,  -211,  -232,
@@ -137,7 +141,8 @@ static INT16 Cb_G[] = {
     -4578, -4600, -4621, -4642, -4663, -4684, -4706, -4727, -4748, -4769, -4790, -4812,
     -4833, -4854, -4875, -4896, -4918, -4939, -4960, -4981, -5002, -5024, -5045, -5066,
     -5087, -5108, -5130, -5151, -5172, -5193, -5214, -5236, -5257, -5278, -5299, -5320,
-    -5342, -5363, -5384, -5405};
+    -5342, -5363, -5384, -5405
+};
 
 static INT16 Cb_B[] = {
     0,    32,   64,   96,   128,  160,  192,  224,  256,  288,  320,  352,  384,  416,
@@ -158,7 +163,8 @@ static INT16 Cb_B[] = {
     6720, 6752, 6784, 6816, 6848, 6880, 6912, 6944, 6976, 7008, 7040, 7072, 7104, 7136,
     7168, 7200, 7232, 7264, 7296, 7328, 7360, 7392, 7424, 7456, 7488, 7520, 7552, 7584,
     7616, 7648, 7680, 7712, 7744, 7776, 7808, 7840, 7872, 7904, 7936, 7968, 8000, 8032,
-    8064, 8096, 8128, 8160};
+    8064, 8096, 8128, 8160
+};
 
 #define Cr_R Cb_B
 
@@ -184,7 +190,8 @@ static INT16 Cr_G[] = {
     -5787, -5814, -5841, -5867, -5894, -5921, -5948, -5975, -6001, -6028, -6055, -6082,
     -6109, -6135, -6162, -6189, -6216, -6243, -6269, -6296, -6323, -6350, -6376, -6403,
     -6430, -6457, -6484, -6510, -6537, -6564, -6591, -6618, -6644, -6671, -6698, -6725,
-    -6752, -6778, -6805, -6832};
+    -6752, -6778, -6805, -6832
+};
 
 static INT16 Cr_B[] = {
     0,     -4,    -9,    -15,   -20,   -25,   -30,   -35,   -41,   -46,   -51,   -56,
@@ -208,7 +215,8 @@ static INT16 Cr_B[] = {
     -1123, -1128, -1133, -1139, -1144, -1149, -1154, -1159, -1165, -1170, -1175, -1180,
     -1185, -1191, -1196, -1201, -1206, -1211, -1217, -1222, -1227, -1232, -1238, -1243,
     -1248, -1253, -1258, -1264, -1269, -1274, -1279, -1284, -1290, -1295, -1300, -1305,
-    -1310, -1316, -1321, -1326};
+    -1310, -1316, -1321, -1326
+};
 
 static INT16 R_Cr[] = {
     -11484, -11394, -11305, -11215, -11125, -11036, -10946, -10856, -10766, -10677,
@@ -236,7 +244,8 @@ static INT16 R_Cr[] = {
     8255,   8345,   8434,   8524,   8614,   8704,   8793,   8883,   8973,   9063,
     9152,   9242,   9332,   9421,   9511,   9601,   9691,   9780,   9870,   9960,
     10050,  10139,  10229,  10319,  10408,  10498,  10588,  10678,  10767,  10857,
-    10947,  11037,  11126,  11216,  11306,  11395};
+    10947,  11037,  11126,  11216,  11306,  11395
+};
 
 static INT16 G_Cb[] = {
     2819,  2797,  2775,  2753,  2731,  2709,  2687,  2665,  2643,  2621,  2599,  2577,
@@ -260,7 +269,8 @@ static INT16 G_Cb[] = {
     -1937, -1959, -1981, -2003, -2025, -2047, -2069, -2091, -2113, -2135, -2157, -2179,
     -2201, -2224, -2246, -2268, -2290, -2312, -2334, -2356, -2378, -2400, -2422, -2444,
     -2466, -2488, -2510, -2532, -2554, -2576, -2598, -2620, -2642, -2664, -2686, -2708,
-    -2730, -2752, -2774, -2796};
+    -2730, -2752, -2774, -2796
+};
 
 static INT16 G_Cr[] = {
     5850,  5805,  5759,  5713,  5667,  5622,  5576,  5530,  5485,  5439,  5393,  5347,
@@ -284,7 +294,8 @@ static INT16 G_Cr[] = {
     -4021, -4067, -4112, -4158, -4204, -4250, -4295, -4341, -4387, -4432, -4478, -4524,
     -4569, -4615, -4661, -4707, -4752, -4798, -4844, -4889, -4935, -4981, -5027, -5072,
     -5118, -5164, -5209, -5255, -5301, -5346, -5392, -5438, -5484, -5529, -5575, -5621,
-    -5666, -5712, -5758, -5804};
+    -5666, -5712, -5758, -5804
+};
 
 static INT16 B_Cb[] = {
     -14515, -14402, -14288, -14175, -14062, -13948, -13835, -13721, -13608, -13495,
@@ -312,7 +323,8 @@ static INT16 B_Cb[] = {
     10434,  10547,  10660,  10774,  10887,  11001,  11114,  11227,  11341,  11454,
     11568,  11681,  11794,  11908,  12021,  12135,  12248,  12361,  12475,  12588,
     12702,  12815,  12929,  13042,  13155,  13269,  13382,  13496,  13609,  13722,
-    13836,  13949,  14063,  14176,  14289,  14403};
+    13836,  13949,  14063,  14176,  14289,  14403
+};
 
 void
 ImagingConvertRGB2YCbCr(UINT8 *out, const UINT8 *in, int pixels) {
diff --git a/src/libImaging/Dib.c b/src/libImaging/Dib.c
index f8a2901b8..c69e9e552 100644
--- a/src/libImaging/Dib.c
+++ b/src/libImaging/Dib.c
@@ -94,8 +94,9 @@ ImagingNewDIB(const char *mode, int xsize, int ysize) {
         return (ImagingDIB)ImagingError_MemoryError();
     }
 
-    dib->bitmap =
-        CreateDIBSection(dib->dc, dib->info, DIB_RGB_COLORS, &dib->bits, NULL, 0);
+    dib->bitmap = CreateDIBSection(
+        dib->dc, dib->info, DIB_RGB_COLORS, (void **)&dib->bits, NULL, 0
+    );
     if (!dib->bitmap) {
         free(dib->info);
         free(dib);
@@ -142,9 +143,9 @@ ImagingNewDIB(const char *mode, int xsize, int ysize) {
         GetSystemPaletteEntries(dib->dc, 0, 256, pal->palPalEntry);
 
         if (strcmp(mode, "L") == 0) {
-            /* Greyscale DIB.  Fill all 236 slots with a greyscale ramp
+            /* Grayscale DIB.  Fill all 236 slots with a grayscale ramp
              * (this is usually overkill on Windows since VGA only offers
-             * 6 bits greyscale resolution).  Ignore the slots already
+             * 6 bits grayscale resolution).  Ignore the slots already
              * allocated by Windows */
 
             i = 10;
@@ -160,7 +161,7 @@ ImagingNewDIB(const char *mode, int xsize, int ysize) {
 #ifdef CUBE216
 
             /* Colour DIB.  Create a 6x6x6 colour cube (216 entries) and
-             * add 20 extra greylevels for best result with greyscale
+             * add 20 extra graylevels for best result with grayscale
              * images. */
 
             i = 10;
@@ -218,7 +219,8 @@ ImagingPasteDIB(ImagingDIB dib, Imaging im, int xy[4]) {
             dib->bits + dib->linesize * (dib->ysize - (xy[1] + y) - 1) +
                 xy[0] * dib->pixelsize,
             im->image[y],
-            im->xsize);
+            im->xsize
+        );
     }
 }
 
@@ -251,7 +253,8 @@ ImagingDrawDIB(ImagingDIB dib, void *dc, int dst[4], int src[4]) {
             dib->bits,
             dib->info,
             DIB_RGB_COLORS,
-            SRCCOPY);
+            SRCCOPY
+        );
     } else {
         /* stretchblt (displays) */
         if (dib->palette != 0) {
@@ -268,7 +271,8 @@ ImagingDrawDIB(ImagingDIB dib, void *dc, int dst[4], int src[4]) {
             src[1],
             src[2] - src[0],
             src[3] - src[1],
-            SRCCOPY);
+            SRCCOPY
+        );
     }
 }
 
diff --git a/src/libImaging/Draw.c b/src/libImaging/Draw.c
index 82f290bd0..f1c8ffcff 100644
--- a/src/libImaging/Draw.c
+++ b/src/libImaging/Draw.c
@@ -41,13 +41,14 @@
 #define FLOOR(v) ((v) >= 0.0 ? (int)(v) : (int)floor(v))
 
 #define INK8(ink) (*(UINT8 *)ink)
+#define INK16(ink) (*(UINT16 *)ink)
 
 /*
  * Rounds around zero (up=away from zero, down=towards zero)
  * This guarantees that ROUND_UP|DOWN(f) == -ROUND_UP|DOWN(-f)
  */
 #define ROUND_UP(f) ((int)((f) >= 0.0 ? floor((f) + 0.5F) : -floor(fabs(f) + 0.5F)))
-#define ROUND_DOWN(f) ((int)((f) >= 0.0 ? ceil((f)-0.5F) : -ceil(fabs(f) - 0.5F)))
+#define ROUND_DOWN(f) ((int)((f) >= 0.0 ? ceil((f) - 0.5F) : -ceil(fabs(f) - 0.5F)))
 
 /* -------------------------------------------------------------------- */
 /* Primitives                                                           */
@@ -68,8 +69,13 @@ static inline void
 point8(Imaging im, int x, int y, int ink) {
     if (x >= 0 && x < im->xsize && y >= 0 && y < im->ysize) {
         if (strncmp(im->mode, "I;16", 4) == 0) {
-            im->image8[y][x * 2] = (UINT8)ink;
+#ifdef WORDS_BIGENDIAN
+            im->image8[y][x * 2] = (UINT8)(ink >> 8);
             im->image8[y][x * 2 + 1] = (UINT8)ink;
+#else
+            im->image8[y][x * 2] = (UINT8)ink;
+            im->image8[y][x * 2 + 1] = (UINT8)(ink >> 8);
+#endif
         } else {
             im->image8[y][x] = (UINT8)ink;
         }
@@ -114,9 +120,8 @@ hline8(Imaging im, int x0, int y0, int x1, int ink) {
         if (x0 <= x1) {
             pixelwidth = strncmp(im->mode, "I;16", 4) == 0 ? 2 : 1;
             memset(
-                im->image8[y0] + x0 * pixelwidth,
-                (UINT8)ink,
-                (x1 - x0 + 1) * pixelwidth);
+                im->image8[y0] + x0 * pixelwidth, (UINT8)ink, (x1 - x0 + 1) * pixelwidth
+            );
         }
     }
 }
@@ -402,7 +407,8 @@ x_cmp(const void *x0, const void *x1) {
 
 static void
 draw_horizontal_lines(
-    Imaging im, int n, Edge *e, int ink, int *x_pos, int y, hline_handler hline) {
+    Imaging im, int n, Edge *e, int ink, int *x_pos, int y, hline_handler hline
+) {
     int i;
     for (i = 0; i < n; i++) {
         if (e[i].ymin == y && e[i].ymin == e[i].ymax) {
@@ -433,7 +439,9 @@ draw_horizontal_lines(
  * Filled polygon draw function using scan line algorithm.
  */
 static inline int
-polygon_generic(Imaging im, int n, Edge *e, int ink, int eofill, hline_handler hline, int hasAlpha) {
+polygon_generic(
+    Imaging im, int n, Edge *e, int ink, int eofill, hline_handler hline, int hasAlpha
+) {
     Edge **edge_table;
     float *xx;
     int edge_count = 0;
@@ -493,7 +501,7 @@ polygon_generic(Imaging im, int n, Edge *e, int ink, int eofill, hline_handler h
                     // Needed to draw consistent polygons
                     xx[j] = xx[j - 1];
                     j++;
-                } else if (current->dx != 0 && roundf(xx[j-1]) == xx[j-1]) {
+                } else if (current->dx != 0 && roundf(xx[j - 1]) == xx[j - 1]) {
                     // Connect discontiguous corners
                     for (k = 0; k < i; k++) {
                         Edge *other_edge = edge_table[k];
@@ -504,23 +512,42 @@ polygon_generic(Imaging im, int n, Edge *e, int ink, int eofill, hline_handler h
                         // Check if the two edges join to make a corner
                         if (((ymin == current->ymin && ymin == other_edge->ymin) ||
                              (ymin == current->ymax && ymin == other_edge->ymax)) &&
-                            xx[j-1] == (ymin - other_edge->y0) * other_edge->dx + other_edge->x0) {
+                            xx[j - 1] == (ymin - other_edge->y0) * other_edge->dx +
+                                             other_edge->x0) {
                             // Determine points from the edges on the next row
                             // Or if this is the last row, check the previous row
                             int offset = ymin == ymax ? -1 : 1;
-                            adjacent_line_x = (ymin + offset - current->y0) * current->dx + current->x0;
-                            adjacent_line_x_other_edge = (ymin + offset - other_edge->y0) * other_edge->dx + other_edge->x0;
+                            adjacent_line_x =
+                                (ymin + offset - current->y0) * current->dx +
+                                current->x0;
+                            adjacent_line_x_other_edge =
+                                (ymin + offset - other_edge->y0) * other_edge->dx +
+                                other_edge->x0;
                             if (ymin == current->ymax) {
                                 if (current->dx > 0) {
-                                    xx[k] = fmax(adjacent_line_x, adjacent_line_x_other_edge) + 1;
+                                    xx[k] =
+                                        fmax(
+                                            adjacent_line_x, adjacent_line_x_other_edge
+                                        ) +
+                                        1;
                                 } else {
-                                    xx[k] = fmin(adjacent_line_x, adjacent_line_x_other_edge) - 1;
+                                    xx[k] =
+                                        fmin(
+                                            adjacent_line_x, adjacent_line_x_other_edge
+                                        ) -
+                                        1;
                                 }
                             } else {
                                 if (current->dx > 0) {
-                                    xx[k] = fmin(adjacent_line_x, adjacent_line_x_other_edge);
+                                    xx[k] = fmin(
+                                        adjacent_line_x, adjacent_line_x_other_edge
+                                    );
                                 } else {
-                                    xx[k] = fmax(adjacent_line_x, adjacent_line_x_other_edge) + 1;
+                                    xx[k] =
+                                        fmax(
+                                            adjacent_line_x, adjacent_line_x_other_edge
+                                        ) +
+                                        1;
                                 }
                             }
                             break;
@@ -546,7 +573,8 @@ polygon_generic(Imaging im, int n, Edge *e, int ink, int eofill, hline_handler h
 
                 int x_start = ROUND_UP(xx[i - 1]);
                 if (x_pos > x_start) {
-                    // Line would be partway through x_pos, so increase the starting point
+                    // Line would be partway through x_pos, so increase the starting
+                    // point
                     x_start = x_pos;
                     if (x_end < x_start) {
                         // Line would now end before it started
@@ -631,13 +659,17 @@ DRAW draw32rgba = {point32rgba, hline32rgba, line32rgba, polygon32rgba};
 /* Interface                                                            */
 /* -------------------------------------------------------------------- */
 
-#define DRAWINIT()                           \
-    if (im->image8) {                        \
-        draw = &draw8;                       \
-        ink = INK8(ink_);                    \
-    } else {                                 \
-        draw = (op) ? &draw32rgba : &draw32; \
-        memcpy(&ink, ink_, sizeof(ink));     \
+#define DRAWINIT()                               \
+    if (im->image8) {                            \
+        draw = &draw8;                           \
+        if (strncmp(im->mode, "I;16", 4) == 0) { \
+            ink = INK16(ink_);                   \
+        } else {                                 \
+            ink = INK8(ink_);                    \
+        }                                        \
+    } else {                                     \
+        draw = (op) ? &draw32rgba : &draw32;     \
+        memcpy(&ink, ink_, sizeof(ink));         \
     }
 
 int
@@ -666,7 +698,8 @@ ImagingDrawLine(Imaging im, int x0, int y0, int x1, int y1, const void *ink_, in
 
 int
 ImagingDrawWideLine(
-    Imaging im, int x0, int y0, int x1, int y1, const void *ink_, int width, int op) {
+    Imaging im, int x0, int y0, int x1, int y1, const void *ink_, int width, int op
+) {
     DRAW *draw;
     INT32 ink;
     int dx, dy;
@@ -697,7 +730,8 @@ ImagingDrawWideLine(
             {x0 - dxmin, y0 + dymax},
             {x1 - dxmin, y1 + dymax},
             {x1 + dxmax, y1 - dymin},
-            {x0 + dxmax, y0 - dymin}};
+            {x0 + dxmax, y0 - dymin}
+        };
 
         add_edge(e + 0, vertices[0][0], vertices[0][1], vertices[1][0], vertices[1][1]);
         add_edge(e + 1, vertices[1][0], vertices[1][1], vertices[2][0], vertices[2][1]);
@@ -719,7 +753,8 @@ ImagingDrawRectangle(
     const void *ink_,
     int fill,
     int width,
-    int op) {
+    int op
+) {
     int i;
     int y;
     int tmp;
@@ -766,7 +801,9 @@ ImagingDrawRectangle(
 }
 
 int
-ImagingDrawPolygon(Imaging im, int count, int *xy, const void *ink_, int fill, int width, int op) {
+ImagingDrawPolygon(
+    Imaging im, int count, int *xy, const void *ink_, int fill, int width, int op
+) {
     int i, n, x0, y0, x1, y1;
     DRAW *draw;
     INT32 ink;
@@ -793,7 +830,7 @@ ImagingDrawPolygon(Imaging im, int count, int *xy, const void *ink_, int fill, i
             if (y0 == y1 && i != 0 && y0 == xy[i * 2 - 1]) {
                 // This is a horizontal line,
                 // that immediately follows another horizontal line
-                Edge *last_e = &e[n-1];
+                Edge *last_e = &e[n - 1];
                 if (x1 > x0 && x0 > xy[i * 2 - 2]) {
                     // They are both increasing in x
                     last_e->xmax = x1;
@@ -816,14 +853,27 @@ ImagingDrawPolygon(Imaging im, int count, int *xy, const void *ink_, int fill, i
         /* Outline */
         if (width == 1) {
             for (i = 0; i < count - 1; i++) {
-                draw->line(im, xy[i * 2], xy[i * 2 + 1], xy[i * 2 + 2], xy[i * 2 + 3], ink);
+                draw->line(
+                    im, xy[i * 2], xy[i * 2 + 1], xy[i * 2 + 2], xy[i * 2 + 3], ink
+                );
             }
             draw->line(im, xy[i * 2], xy[i * 2 + 1], xy[0], xy[1], ink);
         } else {
             for (i = 0; i < count - 1; i++) {
-                ImagingDrawWideLine(im, xy[i * 2], xy[i * 2 + 1], xy[i * 2 + 2], xy[i * 2 + 3], ink_, width, op);
+                ImagingDrawWideLine(
+                    im,
+                    xy[i * 2],
+                    xy[i * 2 + 1],
+                    xy[i * 2 + 2],
+                    xy[i * 2 + 3],
+                    ink_,
+                    width,
+                    op
+                );
             }
-            ImagingDrawWideLine(im, xy[i * 2], xy[i * 2 + 1], xy[0], xy[1], ink_, width, op);
+            ImagingDrawWideLine(
+                im, xy[i * 2], xy[i * 2 + 1], xy[0], xy[1], ink_, width, op
+            );
         }
     }
 
@@ -833,7 +883,8 @@ ImagingDrawPolygon(Imaging im, int count, int *xy, const void *ink_, int fill, i
 int
 ImagingDrawBitmap(Imaging im, int x0, int y0, Imaging bitmap, const void *ink, int op) {
     return ImagingFill2(
-        im, ink, bitmap, x0, y0, x0 + bitmap->xsize, y0 + bitmap->ysize);
+        im, ink, bitmap, x0, y0, x0 + bitmap->xsize, y0 + bitmap->ysize
+    );
 }
 
 /* -------------------------------------------------------------------- */
@@ -1042,7 +1093,8 @@ clip_tree_transpose(clip_node *root) {
 // segments, i.e. something like correct bracket sequences.
 int
 clip_tree_do_clip(
-    clip_node *root, int32_t x0, int32_t y, int32_t x1, event_list **ret) {
+    clip_node *root, int32_t x0, int32_t y, int32_t x1, event_list **ret
+) {
     if (root == NULL) {
         event_list *start = malloc(sizeof(event_list));
         if (!start) {
@@ -1179,7 +1231,8 @@ typedef struct {
 } clip_ellipse_state;
 
 typedef void (*clip_ellipse_init)(
-    clip_ellipse_state *, int32_t, int32_t, int32_t, float, float);
+    clip_ellipse_state *, int32_t, int32_t, int32_t, float, float
+);
 
 void
 debug_clip_tree(clip_node *root, int space) {
@@ -1291,7 +1344,8 @@ arc_init(clip_ellipse_state *s, int32_t a, int32_t b, int32_t w, float al, float
 // A chord line.
 void
 chord_line_init(
-    clip_ellipse_state *s, int32_t a, int32_t b, int32_t w, float al, float ar) {
+    clip_ellipse_state *s, int32_t a, int32_t b, int32_t w, float al, float ar
+) {
     ellipse_init(&s->st, a, b, a + b + 1);
 
     s->head = NULL;
@@ -1318,7 +1372,8 @@ chord_line_init(
 // Pie side.
 void
 pie_side_init(
-    clip_ellipse_state *s, int32_t a, int32_t b, int32_t w, float al, float _) {
+    clip_ellipse_state *s, int32_t a, int32_t b, int32_t w, float al, float _
+) {
     ellipse_init(&s->st, a, b, a + b + 1);
 
     s->head = NULL;
@@ -1434,7 +1489,8 @@ clip_ellipse_free(clip_ellipse_state *s) {
 
 int8_t
 clip_ellipse_next(
-    clip_ellipse_state *s, int32_t *ret_x0, int32_t *ret_y, int32_t *ret_x1) {
+    clip_ellipse_state *s, int32_t *ret_x0, int32_t *ret_y, int32_t *ret_x1
+) {
     int32_t x0, y, x1;
     while (s->head == NULL && ellipse_next(&s->st, &x0, &y, &x1) >= 0) {
         if (clip_tree_do_clip(s->root, x0, y, x1, &s->head) < 0) {
@@ -1468,7 +1524,8 @@ ellipseNew(
     const void *ink_,
     int fill,
     int width,
-    int op) {
+    int op
+) {
     DRAW *draw;
     INT32 ink;
     DRAWINIT();
@@ -1503,7 +1560,8 @@ clipEllipseNew(
     const void *ink_,
     int width,
     int op,
-    clip_ellipse_init init) {
+    clip_ellipse_init init
+) {
     DRAW *draw;
     INT32 ink;
     DRAWINIT();
@@ -1536,7 +1594,8 @@ arcNew(
     float end,
     const void *ink_,
     int width,
-    int op) {
+    int op
+) {
     return clipEllipseNew(im, x0, y0, x1, y1, start, end, ink_, width, op, arc_init);
 }
 
@@ -1551,7 +1610,8 @@ chordNew(
     float end,
     const void *ink_,
     int width,
-    int op) {
+    int op
+) {
     return clipEllipseNew(im, x0, y0, x1, y1, start, end, ink_, width, op, chord_init);
 }
 
@@ -1566,9 +1626,11 @@ chordLineNew(
     float end,
     const void *ink_,
     int width,
-    int op) {
+    int op
+) {
     return clipEllipseNew(
-        im, x0, y0, x1, y1, start, end, ink_, width, op, chord_line_init);
+        im, x0, y0, x1, y1, start, end, ink_, width, op, chord_line_init
+    );
 }
 
 static int
@@ -1582,7 +1644,8 @@ pieNew(
     float end,
     const void *ink_,
     int width,
-    int op) {
+    int op
+) {
     return clipEllipseNew(im, x0, y0, x1, y1, start, end, ink_, width, op, pie_init);
 }
 
@@ -1596,7 +1659,8 @@ pieSideNew(
     float start,
     const void *ink_,
     int width,
-    int op) {
+    int op
+) {
     return clipEllipseNew(im, x0, y0, x1, y1, start, 0, ink_, width, op, pie_side_init);
 }
 
@@ -1610,7 +1674,8 @@ ImagingDrawEllipse(
     const void *ink,
     int fill,
     int width,
-    int op) {
+    int op
+) {
     return ellipseNew(im, x0, y0, x1, y1, ink, fill, width, op);
 }
 
@@ -1625,7 +1690,8 @@ ImagingDrawArc(
     float end,
     const void *ink,
     int width,
-    int op) {
+    int op
+) {
     normalize_angles(&start, &end);
     if (start + 360 == end) {
         return ImagingDrawEllipse(im, x0, y0, x1, y1, ink, 0, width, op);
@@ -1648,7 +1714,8 @@ ImagingDrawChord(
     const void *ink,
     int fill,
     int width,
-    int op) {
+    int op
+) {
     normalize_angles(&start, &end);
     if (start + 360 == end) {
         return ImagingDrawEllipse(im, x0, y0, x1, y1, ink, fill, width, op);
@@ -1678,7 +1745,8 @@ ImagingDrawPieslice(
     const void *ink,
     int fill,
     int width,
-    int op) {
+    int op
+) {
     normalize_angles(&start, &end);
     if (start + 360 == end) {
         return ellipseNew(im, x0, y0, x1, y1, ink, fill, width, op);
@@ -1806,13 +1874,8 @@ ImagingOutlineLine(ImagingOutline outline, float x1, float y1) {
 
 int
 ImagingOutlineCurve(
-    ImagingOutline outline,
-    float x1,
-    float y1,
-    float x2,
-    float y2,
-    float x3,
-    float y3) {
+    ImagingOutline outline, float x1, float y1, float x2, float y2, float x3, float y3
+) {
     Edge *e;
     int i;
     float xo, yo;
@@ -1926,7 +1989,8 @@ ImagingOutlineTransform(ImagingOutline outline, double a[6]) {
 
 int
 ImagingDrawOutline(
-    Imaging im, ImagingOutline outline, const void *ink_, int fill, int op) {
+    Imaging im, ImagingOutline outline, const void *ink_, int fill, int op
+) {
     DRAW *draw;
     INT32 ink;
 
diff --git a/src/libImaging/Fill.c b/src/libImaging/Fill.c
index 5b6bfb89c..8fb481e7e 100644
--- a/src/libImaging/Fill.c
+++ b/src/libImaging/Fill.c
@@ -118,8 +118,8 @@ ImagingFillRadialGradient(const char *mode) {
 
     for (y = 0; y < 256; y++) {
         for (x = 0; x < 256; x++) {
-            d = (int)sqrt(
-                (double)((x - 128) * (x - 128) + (y - 128) * (y - 128)) * 2.0);
+            d = (int
+            )sqrt((double)((x - 128) * (x - 128) + (y - 128) * (y - 128)) * 2.0);
             if (d >= 255) {
                 d = 255;
             }
diff --git a/src/libImaging/Filter.c b/src/libImaging/Filter.c
index 4dcd368ca..7b7b2e429 100644
--- a/src/libImaging/Filter.c
+++ b/src/libImaging/Filter.c
@@ -26,6 +26,8 @@
 
 #include "Imaging.h"
 
+#define ROUND_UP(f) ((int)((f) >= 0.0 ? (f) + 0.5F : (f) - 0.5F))
+
 static inline UINT8
 clip8(float in) {
     if (in <= 0.0) {
@@ -59,7 +61,8 @@ ImagingExpand(Imaging imIn, int xmargin, int ymargin) {
     }
 
     imOut = ImagingNewDirty(
-        imIn->mode, imIn->xsize + 2 * xmargin, imIn->ysize + 2 * ymargin);
+        imIn->mode, imIn->xsize + 2 * xmargin, imIn->ysize + 2 * ymargin
+    );
     if (!imOut) {
         return NULL;
     }
@@ -104,9 +107,25 @@ ImagingExpand(Imaging imIn, int xmargin, int ymargin) {
     return imOut;
 }
 
+float
+kernel_i16(int size, UINT8 *in0, int x, const float *kernel, int bigendian) {
+    int i;
+    float result = 0;
+    int half_size = (size - 1) / 2;
+    for (i = 0; i < size; i++) {
+        int x1 = x + i - half_size;
+        result += _i2f(
+                      in0[x1 * 2 + (bigendian ? 1 : 0)] +
+                      (in0[x1 * 2 + (bigendian ? 0 : 1)] >> 8)
+                  ) *
+                  kernel[i];
+    }
+    return result;
+}
+
 void
 ImagingFilter3x3(Imaging imOut, Imaging im, const float *kernel, float offset) {
-#define KERNEL1x3(in0, x, kernel, d)                                             \
+#define KERNEL1x3(in0, x, kernel, d)                               \
     (_i2f(in0[x - d]) * (kernel)[0] + _i2f(in0[x]) * (kernel)[1] + \
      _i2f(in0[x + d]) * (kernel)[2])
 
@@ -134,6 +153,16 @@ ImagingFilter3x3(Imaging imOut, Imaging im, const float *kernel, float offset) {
                 out[x] = in0[x];
             }
         } else {
+            int bigendian = 0;
+            if (im->type == IMAGING_TYPE_SPECIAL) {
+                if (strcmp(im->mode, "I;16B") == 0
+#ifdef WORDS_BIGENDIAN
+                    || strcmp(im->mode, "I;16N") == 0
+#endif
+                ) {
+                    bigendian = 1;
+                }
+            }
             for (y = 1; y < im->ysize - 1; y++) {
                 UINT8 *in_1 = (UINT8 *)im->image[y - 1];
                 UINT8 *in0 = (UINT8 *)im->image[y];
@@ -141,14 +170,31 @@ ImagingFilter3x3(Imaging imOut, Imaging im, const float *kernel, float offset) {
                 UINT8 *out = (UINT8 *)imOut->image[y];
 
                 out[0] = in0[0];
+                if (im->type == IMAGING_TYPE_SPECIAL) {
+                    out[1] = in0[1];
+                }
                 for (x = 1; x < im->xsize - 1; x++) {
                     float ss = offset;
-                    ss += KERNEL1x3(in1, x, &kernel[0], 1);
-                    ss += KERNEL1x3(in0, x, &kernel[3], 1);
-                    ss += KERNEL1x3(in_1, x, &kernel[6], 1);
-                    out[x] = clip8(ss);
+                    if (im->type == IMAGING_TYPE_SPECIAL) {
+                        ss += kernel_i16(3, in1, x, &kernel[0], bigendian);
+                        ss += kernel_i16(3, in0, x, &kernel[3], bigendian);
+                        ss += kernel_i16(3, in_1, x, &kernel[6], bigendian);
+                        int ss_int = ROUND_UP(ss);
+                        out[x * 2 + (bigendian ? 1 : 0)] = clip8(ss_int % 256);
+                        out[x * 2 + (bigendian ? 0 : 1)] = clip8(ss_int >> 8);
+                    } else {
+                        ss += KERNEL1x3(in1, x, &kernel[0], 1);
+                        ss += KERNEL1x3(in0, x, &kernel[3], 1);
+                        ss += KERNEL1x3(in_1, x, &kernel[6], 1);
+                        out[x] = clip8(ss);
+                    }
+                }
+                if (im->type == IMAGING_TYPE_SPECIAL) {
+                    out[x * 2] = in0[x * 2];
+                    out[x * 2 + 1] = in0[x * 2 + 1];
+                } else {
+                    out[x] = in0[x];
                 }
-                out[x] = in0[x];
             }
         }
     } else {
@@ -224,10 +270,9 @@ ImagingFilter3x3(Imaging imOut, Imaging im, const float *kernel, float offset) {
 
 void
 ImagingFilter5x5(Imaging imOut, Imaging im, const float *kernel, float offset) {
-#define KERNEL1x5(in0, x, kernel, d)                                             \
-    (_i2f(in0[x - d - d]) * (kernel)[0] +                                 \
-     _i2f(in0[x - d]) * (kernel)[1] + _i2f(in0[x]) * (kernel)[2] + \
-     _i2f(in0[x + d]) * (kernel)[3] +                                     \
+#define KERNEL1x5(in0, x, kernel, d)                                       \
+    (_i2f(in0[x - d - d]) * (kernel)[0] + _i2f(in0[x - d]) * (kernel)[1] + \
+     _i2f(in0[x]) * (kernel)[2] + _i2f(in0[x + d]) * (kernel)[3] +         \
      _i2f(in0[x + d + d]) * (kernel)[4])
 
     int x = 0, y = 0;
@@ -261,6 +306,16 @@ ImagingFilter5x5(Imaging imOut, Imaging im, const float *kernel, float offset) {
                 out[x + 1] = in0[x + 1];
             }
         } else {
+            int bigendian = 0;
+            if (im->type == IMAGING_TYPE_SPECIAL) {
+                if (strcmp(im->mode, "I;16B") == 0
+#ifdef WORDS_BIGENDIAN
+                    || strcmp(im->mode, "I;16N") == 0
+#endif
+                ) {
+                    bigendian = 1;
+                }
+            }
             for (y = 2; y < im->ysize - 2; y++) {
                 UINT8 *in_2 = (UINT8 *)im->image[y - 2];
                 UINT8 *in_1 = (UINT8 *)im->image[y - 1];
@@ -271,17 +326,39 @@ ImagingFilter5x5(Imaging imOut, Imaging im, const float *kernel, float offset) {
 
                 out[0] = in0[0];
                 out[1] = in0[1];
+                if (im->type == IMAGING_TYPE_SPECIAL) {
+                    out[2] = in0[2];
+                    out[3] = in0[3];
+                }
                 for (x = 2; x < im->xsize - 2; x++) {
                     float ss = offset;
-                    ss += KERNEL1x5(in2, x, &kernel[0], 1);
-                    ss += KERNEL1x5(in1, x, &kernel[5], 1);
-                    ss += KERNEL1x5(in0, x, &kernel[10], 1);
-                    ss += KERNEL1x5(in_1, x, &kernel[15], 1);
-                    ss += KERNEL1x5(in_2, x, &kernel[20], 1);
-                    out[x] = clip8(ss);
+                    if (im->type == IMAGING_TYPE_SPECIAL) {
+                        ss += kernel_i16(5, in2, x, &kernel[0], bigendian);
+                        ss += kernel_i16(5, in1, x, &kernel[5], bigendian);
+                        ss += kernel_i16(5, in0, x, &kernel[10], bigendian);
+                        ss += kernel_i16(5, in_1, x, &kernel[15], bigendian);
+                        ss += kernel_i16(5, in_2, x, &kernel[20], bigendian);
+                        int ss_int = ROUND_UP(ss);
+                        out[x * 2 + (bigendian ? 1 : 0)] = clip8(ss_int % 256);
+                        out[x * 2 + (bigendian ? 0 : 1)] = clip8(ss_int >> 8);
+                    } else {
+                        ss += KERNEL1x5(in2, x, &kernel[0], 1);
+                        ss += KERNEL1x5(in1, x, &kernel[5], 1);
+                        ss += KERNEL1x5(in0, x, &kernel[10], 1);
+                        ss += KERNEL1x5(in_1, x, &kernel[15], 1);
+                        ss += KERNEL1x5(in_2, x, &kernel[20], 1);
+                        out[x] = clip8(ss);
+                    }
+                }
+                if (im->type == IMAGING_TYPE_SPECIAL) {
+                    out[x * 2 + 0] = in0[x * 2 + 0];
+                    out[x * 2 + 1] = in0[x * 2 + 1];
+                    out[x * 2 + 2] = in0[x * 2 + 2];
+                    out[x * 2 + 3] = in0[x * 2 + 3];
+                } else {
+                    out[x + 0] = in0[x + 0];
+                    out[x + 1] = in0[x + 1];
                 }
-                out[x + 0] = in0[x + 0];
-                out[x + 1] = in0[x + 1];
             }
         }
     } else {
@@ -370,7 +447,8 @@ ImagingFilter5x5(Imaging imOut, Imaging im, const float *kernel, float offset) {
                 }
             }
             memcpy(
-                out + x * sizeof(UINT32), in0 + x * sizeof(UINT32), sizeof(UINT32) * 2);
+                out + x * sizeof(UINT32), in0 + x * sizeof(UINT32), sizeof(UINT32) * 2
+            );
         }
     }
     memcpy(imOut->image[y], im->image[y], im->linesize);
@@ -382,7 +460,8 @@ ImagingFilter(Imaging im, int xsize, int ysize, const FLOAT32 *kernel, FLOAT32 o
     Imaging imOut;
     ImagingSectionCookie cookie;
 
-    if (im->type != IMAGING_TYPE_UINT8 && im->type != IMAGING_TYPE_INT32) {
+    if (im->type == IMAGING_TYPE_FLOAT32 ||
+        (im->type == IMAGING_TYPE_SPECIAL && im->bands != 1)) {
         return (Imaging)ImagingError_ModeError();
     }
 
diff --git a/src/libImaging/FliDecode.c b/src/libImaging/FliDecode.c
index d6e4ea0ff..130ecb7f7 100644
--- a/src/libImaging/FliDecode.c
+++ b/src/libImaging/FliDecode.c
@@ -224,15 +224,16 @@ ImagingFliDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t byt
                 break;
             case 16:
                 /* COPY chunk */
-                if (INT32_MAX / state->xsize < state->ysize) {
+                if (INT32_MAX < (uint64_t)state->xsize * state->ysize) {
                     /* Integer overflow, bail */
                     state->errcode = IMAGING_CODEC_OVERRUN;
                     return -1;
                 }
                 /* Note, have to check Data + size, not just ptr + size) */
                 if (data + (state->xsize * state->ysize) > ptr + bytes) {
-                    /* not enough data for frame */
-                    /* UNDONE Unclear that we're actually going to leave the buffer at the right place. */
+                    // not enough data for frame
+                    // UNDONE Unclear that we're actually going to leave the buffer at
+                    // the right place.
                     return ptr - buf; /* bytes consumed */
                 }
                 for (y = 0; y < state->ysize; y++) {
@@ -251,7 +252,7 @@ ImagingFliDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t byt
                 return -1;
         }
         advance = I32(ptr);
-        if (advance == 0 ) {
+        if (advance == 0) {
             // If there's no advance, we're in an infinite loop
             state->errcode = IMAGING_CODEC_BROKEN;
             return -1;
diff --git a/src/libImaging/Geometry.c b/src/libImaging/Geometry.c
index 0c5915792..1e2abd7e7 100644
--- a/src/libImaging/Geometry.c
+++ b/src/libImaging/Geometry.c
@@ -565,13 +565,13 @@ bilinear_filter32RGB(void *out, Imaging im, double xin, double yin) {
 #undef BILINEAR_HEAD
 #undef BILINEAR_BODY
 
-#define BICUBIC(v, v1, v2, v3, v4, d)              \
-    {                                              \
-        double p1 = v2;                            \
-        double p2 = -v1 + v3;                      \
-        double p3 = 2 * (v1 - v2) + v3 - v4;       \
-        double p4 = -v1 + v2 - v3 + v4;            \
-        v = p1 + (d) * (p2 + (d) * (p3 + (d)*p4)); \
+#define BICUBIC(v, v1, v2, v3, v4, d)                \
+    {                                                \
+        double p1 = v2;                              \
+        double p2 = -v1 + v3;                        \
+        double p3 = 2 * (v1 - v2) + v3 - v4;         \
+        double p4 = -v1 + v2 - v3 + v4;              \
+        v = p1 + (d) * (p2 + (d) * (p3 + (d) * p4)); \
     }
 
 #define BICUBIC_HEAD(type)                                                \
@@ -781,7 +781,8 @@ ImagingGenericTransform(
     ImagingTransformMap transform,
     void *transform_data,
     int filterid,
-    int fill) {
+    int fill
+) {
     /* slow generic transformation.  use ImagingTransformAffine or
        ImagingScaleAffine where possible. */
 
@@ -790,15 +791,15 @@ ImagingGenericTransform(
     char *out;
     double xx, yy;
 
+    if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0) {
+        return (Imaging)ImagingError_ModeError();
+    }
+
     ImagingTransformFilter filter = getfilter(imIn, filterid);
     if (!filter) {
         return (Imaging)ImagingError_ValueError("bad filter number");
     }
 
-    if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0) {
-        return (Imaging)ImagingError_ModeError();
-    }
-
     ImagingCopyPalette(imOut, imIn);
 
     ImagingSectionEnter(&cookie);
@@ -836,14 +837,8 @@ ImagingGenericTransform(
 
 static Imaging
 ImagingScaleAffine(
-    Imaging imOut,
-    Imaging imIn,
-    int x0,
-    int y0,
-    int x1,
-    int y1,
-    double a[6],
-    int fill) {
+    Imaging imOut, Imaging imIn, int x0, int y0, int x1, int y1, double a[6], int fill
+) {
     /* scale, nearest neighbour resampling */
 
     ImagingSectionCookie cookie;
@@ -936,7 +931,8 @@ static inline int
 check_fixed(double a[6], int x, int y) {
     return (
         fabs(x * a[0] + y * a[1] + a[2]) < 32768.0 &&
-        fabs(x * a[3] + y * a[4] + a[5]) < 32768.0);
+        fabs(x * a[3] + y * a[4] + a[5]) < 32768.0
+    );
 }
 
 static inline Imaging
@@ -949,7 +945,8 @@ affine_fixed(
     int y1,
     double a[6],
     int filterid,
-    int fill) {
+    int fill
+) {
     /* affine transform, nearest neighbour resampling, fixed point
        arithmetics */
 
@@ -966,7 +963,7 @@ affine_fixed(
     ysize = (int)imIn->ysize;
 
 /* use 16.16 fixed point arithmetics */
-#define FIX(v) FLOOR((v)*65536.0 + 0.5)
+#define FIX(v) FLOOR((v) * 65536.0 + 0.5)
 
     a0 = FIX(a[0]);
     a1 = FIX(a[1]);
@@ -1026,7 +1023,8 @@ ImagingTransformAffine(
     int y1,
     double a[6],
     int filterid,
-    int fill) {
+    int fill
+) {
     /* affine transform, nearest neighbour resampling, floating point
        arithmetics*/
 
@@ -1037,9 +1035,14 @@ ImagingTransformAffine(
     double xx, yy;
     double xo, yo;
 
+    if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0) {
+        return (Imaging)ImagingError_ModeError();
+    }
+
     if (filterid || imIn->type == IMAGING_TYPE_SPECIAL) {
         return ImagingGenericTransform(
-            imOut, imIn, x0, y0, x1, y1, affine_transform, a, filterid, fill);
+            imOut, imIn, x0, y0, x1, y1, affine_transform, a, filterid, fill
+        );
     }
 
     if (a[1] == 0 && a[3] == 0) {
@@ -1047,10 +1050,6 @@ ImagingTransformAffine(
         return ImagingScaleAffine(imOut, imIn, x0, y0, x1, y1, a, fill);
     }
 
-    if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0) {
-        return (Imaging)ImagingError_ModeError();
-    }
-
     if (x0 < 0) {
         x0 = 0;
     }
@@ -1134,13 +1133,15 @@ ImagingTransform(
     int y1,
     double a[8],
     int filterid,
-    int fill) {
+    int fill
+) {
     ImagingTransformMap transform;
 
     switch (method) {
         case IMAGING_TRANSFORM_AFFINE:
             return ImagingTransformAffine(
-                imOut, imIn, x0, y0, x1, y1, a, filterid, fill);
+                imOut, imIn, x0, y0, x1, y1, a, filterid, fill
+            );
             break;
         case IMAGING_TRANSFORM_PERSPECTIVE:
             transform = perspective_transform;
@@ -1153,5 +1154,6 @@ ImagingTransform(
     }
 
     return ImagingGenericTransform(
-        imOut, imIn, x0, y0, x1, y1, transform, a, filterid, fill);
+        imOut, imIn, x0, y0, x1, y1, transform, a, filterid, fill
+    );
 }
diff --git a/src/libImaging/GetBBox.c b/src/libImaging/GetBBox.c
index e73153600..d430893dd 100644
--- a/src/libImaging/GetBBox.c
+++ b/src/libImaging/GetBBox.c
@@ -19,7 +19,7 @@
 #include "Imaging.h"
 
 int
-ImagingGetBBox(Imaging im, int bbox[4]) {
+ImagingGetBBox(Imaging im, int bbox[4], int alpha_only) {
     /* Get the bounding box for any non-zero data in the image.*/
 
     int x, y;
@@ -30,26 +30,57 @@ ImagingGetBBox(Imaging im, int bbox[4]) {
     bbox[1] = -1;
     bbox[2] = bbox[3] = 0;
 
-#define GETBBOX(image, mask)              \
-    for (y = 0; y < im->ysize; y++) {     \
-        has_data = 0;                     \
-        for (x = 0; x < im->xsize; x++) { \
-            if (im->image[y][x] & mask) { \
-                has_data = 1;             \
-                if (x < bbox[0]) {        \
-                    bbox[0] = x;          \
-                }                         \
-                if (x >= bbox[2]) {       \
-                    bbox[2] = x + 1;      \
-                }                         \
-            }                             \
-        }                                 \
-        if (has_data) {                   \
-            if (bbox[1] < 0) {            \
-                bbox[1] = y;              \
-            }                             \
-            bbox[3] = y + 1;              \
-        }                                 \
+#define GETBBOX(image, mask)                                 \
+    /* first stage: looking for any pixels from top */       \
+    for (y = 0; y < im->ysize; y++) {                        \
+        has_data = 0;                                        \
+        for (x = 0; x < im->xsize; x++) {                    \
+            if (im->image[y][x] & mask) {                    \
+                has_data = 1;                                \
+                bbox[0] = x;                                 \
+                bbox[1] = y;                                 \
+                break;                                       \
+            }                                                \
+        }                                                    \
+        if (has_data) {                                      \
+            break;                                           \
+        }                                                    \
+    }                                                        \
+    /* Check that we have a box */                           \
+    if (bbox[1] < 0) {                                       \
+        return 0; /* no data */                              \
+    }                                                        \
+    /* second stage: looking for any pixels from bottom */   \
+    for (y = im->ysize - 1; y >= bbox[1]; y--) {             \
+        has_data = 0;                                        \
+        for (x = 0; x < im->xsize; x++) {                    \
+            if (im->image[y][x] & mask) {                    \
+                has_data = 1;                                \
+                if (x < bbox[0]) {                           \
+                    bbox[0] = x;                             \
+                }                                            \
+                bbox[3] = y + 1;                             \
+                break;                                       \
+            }                                                \
+        }                                                    \
+        if (has_data) {                                      \
+            break;                                           \
+        }                                                    \
+    }                                                        \
+    /* third stage: looking for left and right boundaries */ \
+    for (y = bbox[1]; y < bbox[3]; y++) {                    \
+        for (x = 0; x < bbox[0]; x++) {                      \
+            if (im->image[y][x] & mask) {                    \
+                bbox[0] = x;                                 \
+                break;                                       \
+            }                                                \
+        }                                                    \
+        for (x = im->xsize - 1; x >= bbox[2]; x--) {         \
+            if (im->image[y][x] & mask) {                    \
+                bbox[2] = x + 1;                             \
+                break;                                       \
+            }                                                \
+        }                                                    \
     }
 
     if (im->image8) {
@@ -58,10 +89,10 @@ ImagingGetBBox(Imaging im, int bbox[4]) {
         INT32 mask = 0xffffffff;
         if (im->bands == 3) {
             ((UINT8 *)&mask)[3] = 0;
-        } else if (
-            strcmp(im->mode, "RGBa") == 0 || strcmp(im->mode, "RGBA") == 0 ||
-            strcmp(im->mode, "La") == 0 || strcmp(im->mode, "LA") == 0 ||
-            strcmp(im->mode, "PA") == 0) {
+        } else if (alpha_only &&
+                   (strcmp(im->mode, "RGBa") == 0 || strcmp(im->mode, "RGBA") == 0 ||
+                    strcmp(im->mode, "La") == 0 || strcmp(im->mode, "LA") == 0 ||
+                    strcmp(im->mode, "PA") == 0)) {
 #ifdef WORDS_BIGENDIAN
             mask = 0x000000ff;
 #else
@@ -71,11 +102,6 @@ ImagingGetBBox(Imaging im, int bbox[4]) {
         GETBBOX(image32, mask);
     }
 
-    /* Check that we got a box */
-    if (bbox[1] < 0) {
-        return 0; /* no data */
-    }
-
     return 1; /* ok */
 }
 
@@ -144,6 +170,9 @@ ImagingGetExtrema(Imaging im, void *extrema) {
                         imax = in[x];
                     }
                 }
+                if (imin == 0 && imax == 255) {
+                    break;
+                }
             }
             ((UINT8 *)extrema)[0] = (UINT8)imin;
             ((UINT8 *)extrema)[1] = (UINT8)imax;
@@ -245,13 +274,14 @@ getcolors32(Imaging im, int maxcolors, int *size) {
        code in Python 2.1.3; the exact implementation is borrowed from
        Python's Unicode property database (written by yours truly) /F */
 
-    static int SIZES[] = {
-        4,         3,  8,         3,  16,        3,  32,         5,  64,       3,
-        128,       3,  256,       29, 512,       17, 1024,       9,  2048,     5,
-        4096,      83, 8192,      27, 16384,     43, 32768,      3,  65536,    45,
-        131072,    9,  262144,    39, 524288,    39, 1048576,    9,  2097152,  5,
-        4194304,   3,  8388608,   33, 16777216,  27, 33554432,   9,  67108864, 71,
-        134217728, 39, 268435456, 9,  536870912, 5,  1073741824, 83, 0};
+    static int SIZES[] = {4,          3,  8,         3,  16,        3,  32,        5,
+                          64,         3,  128,       3,  256,       29, 512,       17,
+                          1024,       9,  2048,      5,  4096,      83, 8192,      27,
+                          16384,      43, 32768,     3,  65536,     45, 131072,    9,
+                          262144,     39, 524288,    39, 1048576,   9,  2097152,   5,
+                          4194304,    3,  8388608,   33, 16777216,  27, 33554432,  9,
+                          67108864,   71, 134217728, 39, 268435456, 9,  536870912, 5,
+                          1073741824, 83, 0};
 
     code_size = code_poly = code_mask = 0;
 
diff --git a/src/libImaging/Gif.h b/src/libImaging/Gif.h
index 5d7e2bdaa..8edfbc2ed 100644
--- a/src/libImaging/Gif.h
+++ b/src/libImaging/Gif.h
@@ -9,10 +9,10 @@
 
 /* Max size for a LZW code word. */
 
-#define GIFBITS     12
+#define GIFBITS 12
 
-#define GIFTABLE    (1<<GIFBITS)
-#define GIFBUFFER   (1<<GIFBITS)
+#define GIFTABLE (1 << GIFBITS)
+#define GIFBUFFER (1 << GIFBITS)
 
 typedef struct {
     /* CONFIGURATION */
@@ -66,7 +66,7 @@ typedef struct {
 } GIFDECODERSTATE;
 
 /* For GIF LZW encoder. */
-#define TABLE_SIZE  8192
+#define TABLE_SIZE 8192
 
 typedef struct {
     /* CONFIGURATION */
diff --git a/src/libImaging/GifEncode.c b/src/libImaging/GifEncode.c
index f23245405..203fb9d0a 100644
--- a/src/libImaging/GifEncode.c
+++ b/src/libImaging/GifEncode.c
@@ -34,28 +34,36 @@ enum { INIT, ENCODE, FINISH };
  */
 
 /* Return values */
-#define GLZW_OK                 0
-#define GLZW_NO_INPUT_AVAIL     1
-#define GLZW_NO_OUTPUT_AVAIL    2
-#define GLZW_INTERNAL_ERROR     3
+#define GLZW_OK 0
+#define GLZW_NO_INPUT_AVAIL 1
+#define GLZW_NO_OUTPUT_AVAIL 2
+#define GLZW_INTERNAL_ERROR 3
 
-#define CODE_LIMIT              4096
+#define CODE_LIMIT 4096
 
 /* Values of entry_state */
-enum { LZW_INITIAL, LZW_TRY_IN1, LZW_TRY_IN2, LZW_TRY_OUT1, LZW_TRY_OUT2,
-    LZW_FINISHED };
+enum {
+    LZW_INITIAL,
+    LZW_TRY_IN1,
+    LZW_TRY_IN2,
+    LZW_TRY_OUT1,
+    LZW_TRY_OUT2,
+    LZW_FINISHED
+};
 
 /* Values of control_state */
 enum { PUT_HEAD, PUT_INIT_CLEAR, PUT_CLEAR, PUT_LAST_HEAD, PUT_END };
 
-static void glzwe_reset(GIFENCODERSTATE *st) {
+static void
+glzwe_reset(GIFENCODERSTATE *st) {
     st->next_code = st->end_code + 1;
     st->max_code = 2 * st->clear_code - 1;
     st->code_width = st->bits + 1;
     memset(st->codes, 0, sizeof(st->codes));
 }
 
-static void glzwe_init(GIFENCODERSTATE *st) {
+static void
+glzwe_init(GIFENCODERSTATE *st) {
     st->clear_code = 1 << st->bits;
     st->end_code = st->clear_code + 1;
     glzwe_reset(st);
@@ -64,156 +72,158 @@ static void glzwe_init(GIFENCODERSTATE *st) {
     st->code_buffer = 0;
 }
 
-static int glzwe(GIFENCODERSTATE *st, const UINT8 *in_ptr, UINT8 *out_ptr,
-        UINT32 *in_avail, UINT32 *out_avail,
-        UINT32 end_of_data) {
+static int
+glzwe(
+    GIFENCODERSTATE *st,
+    const UINT8 *in_ptr,
+    UINT8 *out_ptr,
+    UINT32 *in_avail,
+    UINT32 *out_avail,
+    UINT32 end_of_data
+) {
     switch (st->entry_state) {
-
-    case LZW_TRY_IN1:
+        case LZW_TRY_IN1:
 get_first_byte:
-        if (!*in_avail) {
-            if (end_of_data) {
-                goto end_of_data;
+            if (!*in_avail) {
+                if (end_of_data) {
+                    goto end_of_data;
+                }
+                st->entry_state = LZW_TRY_IN1;
+                return GLZW_NO_INPUT_AVAIL;
             }
-            st->entry_state = LZW_TRY_IN1;
-            return GLZW_NO_INPUT_AVAIL;
-        }
-        st->head = *in_ptr++;
-        (*in_avail)--;
+            st->head = *in_ptr++;
+            (*in_avail)--;
 
-    case LZW_TRY_IN2:
+        case LZW_TRY_IN2:
 encode_loop:
-        if (!*in_avail) {
-            if (end_of_data) {
-                st->code = st->head;
-                st->put_state = PUT_LAST_HEAD;
-                goto put_code;
+            if (!*in_avail) {
+                if (end_of_data) {
+                    st->code = st->head;
+                    st->put_state = PUT_LAST_HEAD;
+                    goto put_code;
+                }
+                st->entry_state = LZW_TRY_IN2;
+                return GLZW_NO_INPUT_AVAIL;
             }
-            st->entry_state = LZW_TRY_IN2;
-            return GLZW_NO_INPUT_AVAIL;
-        }
-        st->tail = *in_ptr++;
-        (*in_avail)--;
+            st->tail = *in_ptr++;
+            (*in_avail)--;
 
-        /* Knuth TAOCP vol 3 sec. 6.4 algorithm D. */
-        /* Hash found experimentally to be pretty good. */
-        /* This works ONLY with TABLE_SIZE a power of 2. */
-        st->probe = ((st->head ^ (st->tail << 6)) * 31) & (TABLE_SIZE - 1);
-        while (st->codes[st->probe]) {
-            if ((st->codes[st->probe] & 0xFFFFF) ==
-                                        ((st->head << 8) | st->tail)) {
-                st->head = st->codes[st->probe] >> 20;
-                goto encode_loop;
-            } else {
-        /* Reprobe decrement must be nonzero and relatively prime to table
-         * size. So, any odd positive number for power-of-2 size. */
-                if ((st->probe -= ((st->tail << 2) | 1)) < 0) {
-                    st->probe += TABLE_SIZE;
+            /* Knuth TAOCP vol 3 sec. 6.4 algorithm D. */
+            /* Hash found experimentally to be pretty good. */
+            /* This works ONLY with TABLE_SIZE a power of 2. */
+            st->probe = ((st->head ^ (st->tail << 6)) * 31) & (TABLE_SIZE - 1);
+            while (st->codes[st->probe]) {
+                if ((st->codes[st->probe] & 0xFFFFF) == ((st->head << 8) | st->tail)) {
+                    st->head = st->codes[st->probe] >> 20;
+                    goto encode_loop;
+                } else {
+                    // Reprobe decrement must be non-zero and relatively prime to table
+                    // size. So, any odd positive number for power-of-2 size.
+                    if ((st->probe -= ((st->tail << 2) | 1)) < 0) {
+                        st->probe += TABLE_SIZE;
+                    }
                 }
             }
-        }
-        /* Key not found, probe is at empty slot. */
-        st->code = st->head;
-        st->put_state = PUT_HEAD;
-        goto put_code;
-insert_code_or_clear: /* jump here after put_code */
-        if (st->next_code < CODE_LIMIT) {
-            st->codes[st->probe] = (st->next_code << 20) |
-                                    (st->head << 8) | st->tail;
-            if (st->next_code > st->max_code) {
-                st->max_code = st->max_code * 2 + 1;
-                st->code_width++;
-            }
-            st->next_code++;
-        } else {
-            st->code = st->clear_code;
-            st->put_state = PUT_CLEAR;
+            /* Key not found, probe is at empty slot. */
+            st->code = st->head;
+            st->put_state = PUT_HEAD;
             goto put_code;
+insert_code_or_clear: /* jump here after put_code */
+            if (st->next_code < CODE_LIMIT) {
+                st->codes[st->probe] =
+                    (st->next_code << 20) | (st->head << 8) | st->tail;
+                if (st->next_code > st->max_code) {
+                    st->max_code = st->max_code * 2 + 1;
+                    st->code_width++;
+                }
+                st->next_code++;
+            } else {
+                st->code = st->clear_code;
+                st->put_state = PUT_CLEAR;
+                goto put_code;
 reset_after_clear: /* jump here after put_code */
-            glzwe_reset(st);
-        }
-        st->head = st->tail;
-        goto encode_loop;
-
-    case LZW_INITIAL:
-        glzwe_reset(st);
-        st->code = st->clear_code;
-        st->put_state = PUT_INIT_CLEAR;
-put_code:
-        st->code_bits_left = st->code_width;
-check_buf_bits:
-        if (!st->buf_bits_left) {   /* out buffer full */
-
-    case LZW_TRY_OUT1:
-            if (!*out_avail) {
-                st->entry_state = LZW_TRY_OUT1;
-                return GLZW_NO_OUTPUT_AVAIL;
+                glzwe_reset(st);
+            }
+            st->head = st->tail;
+            goto encode_loop;
+
+        case LZW_INITIAL:
+            glzwe_reset(st);
+            st->code = st->clear_code;
+            st->put_state = PUT_INIT_CLEAR;
+put_code:
+            st->code_bits_left = st->code_width;
+check_buf_bits:
+            if (!st->buf_bits_left) { /* out buffer full */
+
+                case LZW_TRY_OUT1:
+                    if (!*out_avail) {
+                        st->entry_state = LZW_TRY_OUT1;
+                        return GLZW_NO_OUTPUT_AVAIL;
+                    }
+                    *out_ptr++ = st->code_buffer;
+                    (*out_avail)--;
+                    st->code_buffer = 0;
+                    st->buf_bits_left = 8;
+            }
+            /* code bits to pack */
+            UINT32 n = st->buf_bits_left < st->code_bits_left ? st->buf_bits_left
+                                                              : st->code_bits_left;
+            st->code_buffer |= (st->code & ((1 << n) - 1)) << (8 - st->buf_bits_left);
+            st->code >>= n;
+            st->buf_bits_left -= n;
+            st->code_bits_left -= n;
+            if (st->code_bits_left) {
+                goto check_buf_bits;
+            }
+            switch (st->put_state) {
+                case PUT_INIT_CLEAR:
+                    goto get_first_byte;
+                case PUT_HEAD:
+                    goto insert_code_or_clear;
+                case PUT_CLEAR:
+                    goto reset_after_clear;
+                case PUT_LAST_HEAD:
+                    goto end_of_data;
+                case PUT_END:
+                    goto flush_code_buffer;
+                default:
+                    return GLZW_INTERNAL_ERROR;
             }
-            *out_ptr++ = st->code_buffer;
-            (*out_avail)--;
-            st->code_buffer = 0;
-            st->buf_bits_left = 8;
-        }
-        /* code bits to pack */
-        UINT32 n = st->buf_bits_left < st->code_bits_left
-                        ? st->buf_bits_left : st->code_bits_left;
-        st->code_buffer |=
-                        (st->code & ((1 << n) - 1)) << (8 - st->buf_bits_left);
-        st->code >>= n;
-        st->buf_bits_left -= n;
-        st->code_bits_left -= n;
-        if (st->code_bits_left) {
-            goto check_buf_bits;
-        }
-        switch (st->put_state) {
-        case PUT_INIT_CLEAR:
-            goto get_first_byte;
-        case PUT_HEAD:
-            goto insert_code_or_clear;
-        case PUT_CLEAR:
-            goto reset_after_clear;
-        case PUT_LAST_HEAD:
-            goto end_of_data;
-        case PUT_END:
-            goto flush_code_buffer;
-        default:
-            return GLZW_INTERNAL_ERROR;
-        }
 
 end_of_data:
-        st->code = st->end_code;
-        st->put_state = PUT_END;
-        goto put_code;
+            st->code = st->end_code;
+            st->put_state = PUT_END;
+            goto put_code;
 flush_code_buffer: /* jump here after put_code */
-        if (st->buf_bits_left < 8) {
-
-    case LZW_TRY_OUT2:
-            if (!*out_avail) {
-                st->entry_state = LZW_TRY_OUT2;
-                return GLZW_NO_OUTPUT_AVAIL;
+            if (st->buf_bits_left < 8) {
+                case LZW_TRY_OUT2:
+                    if (!*out_avail) {
+                        st->entry_state = LZW_TRY_OUT2;
+                        return GLZW_NO_OUTPUT_AVAIL;
+                    }
+                    *out_ptr++ = st->code_buffer;
+                    (*out_avail)--;
             }
-            *out_ptr++ = st->code_buffer;
-            (*out_avail)--;
-        }
-        st->entry_state = LZW_FINISHED;
-        return GLZW_OK;
+            st->entry_state = LZW_FINISHED;
+            return GLZW_OK;
 
-    case LZW_FINISHED:
-        return GLZW_OK;
+        case LZW_FINISHED:
+            return GLZW_OK;
 
-    default:
-        return GLZW_INTERNAL_ERROR;
+        default:
+            return GLZW_INTERNAL_ERROR;
     }
 }
 /* -END- GIF LZW encoder. */
 
 int
-ImagingGifEncode(Imaging im, ImagingCodecState state, UINT8* buf, int bytes) {
-    UINT8* ptr;
-    UINT8* sub_block_ptr;
-    UINT8* sub_block_limit;
-    UINT8* buf_limit;
-    GIFENCODERSTATE *context = (GIFENCODERSTATE*) state->context;
+ImagingGifEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
+    UINT8 *ptr;
+    UINT8 *sub_block_ptr;
+    UINT8 *sub_block_limit;
+    UINT8 *buf_limit;
+    GIFENCODERSTATE *context = (GIFENCODERSTATE *)state->context;
     int r;
 
     UINT32 in_avail, in_used;
@@ -278,9 +288,9 @@ ImagingGifEncode(Imaging im, ImagingCodecState state, UINT8* buf, int bytes) {
                 return ptr - buf;
             }
             sub_block_ptr = ptr;
-            sub_block_limit = sub_block_ptr +
-                (256 < buf_limit - sub_block_ptr ?
-                 256 : buf_limit - sub_block_ptr);
+            sub_block_limit =
+                sub_block_ptr +
+                (256 < buf_limit - sub_block_ptr ? 256 : buf_limit - sub_block_ptr);
             *ptr++ = 0;
         }
 
@@ -301,8 +311,9 @@ ImagingGifEncode(Imaging im, ImagingCodecState state, UINT8* buf, int bytes) {
             /* get another line of data */
             state->shuffle(
                 state->buffer,
-                (UINT8*) im->image[state->y + state->yoff] +
-                state->xoff * im->pixelsize, state->xsize
+                (UINT8 *)im->image[state->y + state->yoff] +
+                    state->xoff * im->pixelsize,
+                state->xsize
             );
             state->x = 0;
 
@@ -331,10 +342,16 @@ ImagingGifEncode(Imaging im, ImagingCodecState state, UINT8* buf, int bytes) {
             }
         }
 
-        in_avail = state->xsize - state->x;   /* bytes left in line */
+        in_avail = state->xsize - state->x; /* bytes left in line */
         out_avail = sub_block_limit - ptr;  /* bytes left in sub-block */
-        r = glzwe(context, &state->buffer[state->x], ptr, &in_avail,
-                &out_avail, state->state == FINISH);
+        r = glzwe(
+            context,
+            &state->buffer[state->x],
+            ptr,
+            &in_avail,
+            &out_avail,
+            state->state == FINISH
+        );
         out_used = sub_block_limit - ptr - out_avail;
         *sub_block_ptr += out_used;
         ptr += out_used;
diff --git a/src/libImaging/HexDecode.c b/src/libImaging/HexDecode.c
index bd16cdbe1..e26c0e9b3 100644
--- a/src/libImaging/HexDecode.c
+++ b/src/libImaging/HexDecode.c
@@ -49,7 +49,8 @@ ImagingHexDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t byt
             if (++state->x >= state->bytes) {
                 /* Got a full line, unpack it */
                 state->shuffle(
-                    (UINT8 *)im->image[state->y], state->buffer, state->xsize);
+                    (UINT8 *)im->image[state->y], state->buffer, state->xsize
+                );
 
                 state->x = 0;
 
diff --git a/src/libImaging/ImPlatform.h b/src/libImaging/ImPlatform.h
index f6e7fb6b9..c9b7e43b4 100644
--- a/src/libImaging/ImPlatform.h
+++ b/src/libImaging/ImPlatform.h
@@ -7,6 +7,7 @@
  * Copyright (c) Fredrik Lundh 1995-2003.
  */
 
+#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 
 /* Check that we have an ANSI compliant compiler */
diff --git a/src/libImaging/Imaging.h b/src/libImaging/Imaging.h
index beec8a8f2..31052c68a 100644
--- a/src/libImaging/Imaging.h
+++ b/src/libImaging/Imaging.h
@@ -60,8 +60,8 @@ typedef struct ImagingHistogramInstance *ImagingHistogram;
 typedef struct ImagingOutlineInstance *ImagingOutline;
 typedef struct ImagingPaletteInstance *ImagingPalette;
 
-/* handle magics (used with PyCObject). */
-#define IMAGING_MAGIC "PIL Imaging"
+/* handle magics (used with PyCapsule). */
+#define IMAGING_MAGIC "Pillow Imaging"
 
 /* pixel types */
 #define IMAGING_TYPE_UINT8 0
@@ -108,15 +108,15 @@ struct ImagingMemoryInstance {
 
 #define IMAGING_PIXEL_1(im, x, y) ((im)->image8[(y)][(x)])
 #define IMAGING_PIXEL_L(im, x, y) ((im)->image8[(y)][(x)])
-#define IMAGING_PIXEL_LA(im, x, y) ((im)->image[(y)][(x)*4])
+#define IMAGING_PIXEL_LA(im, x, y) ((im)->image[(y)][(x) * 4])
 #define IMAGING_PIXEL_P(im, x, y) ((im)->image8[(y)][(x)])
-#define IMAGING_PIXEL_PA(im, x, y) ((im)->image[(y)][(x)*4])
+#define IMAGING_PIXEL_PA(im, x, y) ((im)->image[(y)][(x) * 4])
 #define IMAGING_PIXEL_I(im, x, y) ((im)->image32[(y)][(x)])
 #define IMAGING_PIXEL_F(im, x, y) (((FLOAT32 *)(im)->image32[y])[x])
-#define IMAGING_PIXEL_RGB(im, x, y) ((im)->image[(y)][(x)*4])
-#define IMAGING_PIXEL_RGBA(im, x, y) ((im)->image[(y)][(x)*4])
-#define IMAGING_PIXEL_CMYK(im, x, y) ((im)->image[(y)][(x)*4])
-#define IMAGING_PIXEL_YCbCr(im, x, y) ((im)->image[(y)][(x)*4])
+#define IMAGING_PIXEL_RGB(im, x, y) ((im)->image[(y)][(x) * 4])
+#define IMAGING_PIXEL_RGBA(im, x, y) ((im)->image[(y)][(x) * 4])
+#define IMAGING_PIXEL_CMYK(im, x, y) ((im)->image[(y)][(x) * 4])
+#define IMAGING_PIXEL_YCbCr(im, x, y) ((im)->image[(y)][(x) * 4])
 
 #define IMAGING_PIXEL_UINT8(im, x, y) ((im)->image8[(y)][(x)])
 #define IMAGING_PIXEL_INT32(im, x, y) ((im)->image32[(y)][(x)])
@@ -161,7 +161,10 @@ typedef struct ImagingMemoryArena {
     int stats_reallocated_blocks; /* Number of blocks which were actually reallocated
                                      after retrieving */
     int stats_freed_blocks;       /* Number of freed blocks */
-} * ImagingMemoryArena;
+#ifdef Py_GIL_DISABLED
+    PyMutex mutex;
+#endif
+} *ImagingMemoryArena;
 
 /* Objects */
 /* ------- */
@@ -295,7 +298,8 @@ extern Imaging
 ImagingFill(Imaging im, const void *ink);
 extern int
 ImagingFill2(
-    Imaging into, const void *ink, Imaging mask, int x0, int y0, int x1, int y1);
+    Imaging into, const void *ink, Imaging mask, int x0, int y0, int x1, int y1
+);
 extern Imaging
 ImagingFillBand(Imaging im, int band, int color);
 extern Imaging
@@ -309,7 +313,9 @@ ImagingFlipLeftRight(Imaging imOut, Imaging imIn);
 extern Imaging
 ImagingFlipTopBottom(Imaging imOut, Imaging imIn);
 extern Imaging
-ImagingGaussianBlur(Imaging imOut, Imaging imIn, float radius, int passes);
+ImagingGaussianBlur(
+    Imaging imOut, Imaging imIn, float xradius, float yradius, int passes
+);
 extern Imaging
 ImagingGetBand(Imaging im, int band);
 extern Imaging
@@ -317,7 +323,7 @@ ImagingMerge(const char *mode, Imaging bands[4]);
 extern int
 ImagingSplit(Imaging im, Imaging bands[4]);
 extern int
-ImagingGetBBox(Imaging im, int bbox[4]);
+ImagingGetBBox(Imaging im, int bbox[4], int alpha_only);
 typedef struct {
     int x, y;
     INT32 count;
@@ -372,11 +378,12 @@ ImagingTransform(
     int y1,
     double a[8],
     int filter,
-    int fill);
+    int fill
+);
 extern Imaging
 ImagingUnsharpMask(Imaging imOut, Imaging im, float radius, int percent, int threshold);
 extern Imaging
-ImagingBoxBlur(Imaging imOut, Imaging imIn, float radius, int n);
+ImagingBoxBlur(Imaging imOut, Imaging imIn, float xradius, float yradius, int n);
 extern Imaging
 ImagingColorLUT3D_linear(
     Imaging imOut,
@@ -385,7 +392,8 @@ ImagingColorLUT3D_linear(
     int size1D,
     int size2D,
     int size3D,
-    INT16 *table);
+    INT16 *table
+);
 
 extern Imaging
 ImagingCopy2(Imaging imOut, Imaging imIn);
@@ -439,7 +447,8 @@ ImagingDrawArc(
     float end,
     const void *ink,
     int width,
-    int op);
+    int op
+);
 extern int
 ImagingDrawBitmap(Imaging im, int x0, int y0, Imaging bitmap, const void *ink, int op);
 extern int
@@ -454,7 +463,8 @@ ImagingDrawChord(
     const void *ink,
     int fill,
     int width,
-    int op);
+    int op
+);
 extern int
 ImagingDrawEllipse(
     Imaging im,
@@ -465,12 +475,14 @@ ImagingDrawEllipse(
     const void *ink,
     int fill,
     int width,
-    int op);
+    int op
+);
 extern int
 ImagingDrawLine(Imaging im, int x0, int y0, int x1, int y1, const void *ink, int op);
 extern int
 ImagingDrawWideLine(
-    Imaging im, int x0, int y0, int x1, int y1, const void *ink, int width, int op);
+    Imaging im, int x0, int y0, int x1, int y1, const void *ink, int width, int op
+);
 extern int
 ImagingDrawPieslice(
     Imaging im,
@@ -483,11 +495,14 @@ ImagingDrawPieslice(
     const void *ink,
     int fill,
     int width,
-    int op);
+    int op
+);
 extern int
 ImagingDrawPoint(Imaging im, int x, int y, const void *ink, int op);
 extern int
-ImagingDrawPolygon(Imaging im, int points, int *xy, const void *ink, int fill, int width, int op);
+ImagingDrawPolygon(
+    Imaging im, int points, int *xy, const void *ink, int fill, int width, int op
+);
 extern int
 ImagingDrawRectangle(
     Imaging im,
@@ -498,7 +513,8 @@ ImagingDrawRectangle(
     const void *ink,
     int fill,
     int width,
-    int op);
+    int op
+);
 
 /* Level 2 graphics (WORK IN PROGRESS) */
 extern ImagingOutline
@@ -508,7 +524,8 @@ ImagingOutlineDelete(ImagingOutline outline);
 
 extern int
 ImagingDrawOutline(
-    Imaging im, ImagingOutline outline, const void *ink, int fill, int op);
+    Imaging im, ImagingOutline outline, const void *ink, int fill, int op
+);
 
 extern int
 ImagingOutlineMove(ImagingOutline outline, float x, float y);
@@ -516,7 +533,8 @@ extern int
 ImagingOutlineLine(ImagingOutline outline, float x, float y);
 extern int
 ImagingOutlineCurve(
-    ImagingOutline outline, float x1, float y1, float x2, float y2, float x3, float y3);
+    ImagingOutline outline, float x1, float y1, float x2, float y2, float x3, float y3
+);
 extern int
 ImagingOutlineTransform(ImagingOutline outline, double a[6]);
 
@@ -543,7 +561,8 @@ ImagingSavePPM(Imaging im, const char *filename);
 /* Codecs */
 typedef struct ImagingCodecStateInstance *ImagingCodecState;
 typedef int (*ImagingCodec)(
-    Imaging im, ImagingCodecState state, UINT8 *buffer, int bytes);
+    Imaging im, ImagingCodecState state, UINT8 *buffer, int bytes
+);
 
 extern int
 ImagingBcnDecode(Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes);
@@ -573,7 +592,8 @@ ImagingJpegEncode(Imaging im, ImagingCodecState state, UINT8 *buffer, int bytes)
 #ifdef HAVE_OPENJPEG
 extern int
 ImagingJpeg2KDecode(
-    Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes);
+    Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes
+);
 extern int
 ImagingJpeg2KDecodeCleanup(ImagingCodecState state);
 extern int
@@ -584,7 +604,8 @@ ImagingJpeg2KEncodeCleanup(ImagingCodecState state);
 #ifdef HAVE_LIBTIFF
 extern int
 ImagingLibTiffDecode(
-    Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes);
+    Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes
+);
 extern int
 ImagingLibTiffEncode(Imaging im, ImagingCodecState state, UINT8 *buffer, int bytes);
 #endif
@@ -596,7 +617,8 @@ extern int
 ImagingMspDecode(Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes);
 extern int
 ImagingPackbitsDecode(
-    Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes);
+    Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes
+);
 extern int
 ImagingPcdDecode(Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes);
 extern int
@@ -609,13 +631,16 @@ extern int
 ImagingRawEncode(Imaging im, ImagingCodecState state, UINT8 *buffer, int bytes);
 extern int
 ImagingSgiRleDecode(
-    Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes);
+    Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes
+);
 extern int
 ImagingSunRleDecode(
-    Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes);
+    Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes
+);
 extern int
 ImagingTgaRleDecode(
-    Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes);
+    Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes
+);
 extern int
 ImagingTgaRleEncode(Imaging im, ImagingCodecState state, UINT8 *buffer, int bytes);
 extern int
@@ -688,6 +713,15 @@ _imaging_tell_pyFd(PyObject *fd);
 #include "ImagingUtils.h"
 extern UINT8 *clip8_lookups;
 
+/* Mutex lock/unlock helpers */
+#ifdef Py_GIL_DISABLED
+#define MUTEX_LOCK(m) PyMutex_Lock(m)
+#define MUTEX_UNLOCK(m) PyMutex_Unlock(m)
+#else
+#define MUTEX_LOCK(m)
+#define MUTEX_UNLOCK(m)
+#endif
+
 #if defined(__cplusplus)
 }
 #endif
diff --git a/src/libImaging/ImagingUtils.h b/src/libImaging/ImagingUtils.h
index f2acabeac..714458ad0 100644
--- a/src/libImaging/ImagingUtils.h
+++ b/src/libImaging/ImagingUtils.h
@@ -21,7 +21,7 @@
 
 #define DIV255(a, tmp) (tmp = (a) + 128, SHIFTFORDIV255(tmp))
 
-#define BLEND(mask, in1, in2, tmp1) DIV255(in1 *(255 - mask) + in2 * mask, tmp1)
+#define BLEND(mask, in1, in2, tmp1) DIV255(in1 * (255 - mask) + in2 * mask, tmp1)
 
 #define PREBLEND(mask, in1, in2, tmp1) (MULDIV255(in1, (255 - mask), tmp1) + in2)
 
@@ -30,7 +30,7 @@
 /* This is to work around a bug in GCC prior 4.9 in 64 bit mode.
    GCC generates code with partial dependency which is 3 times slower.
    See: https://stackoverflow.com/a/26588074/253146 */
-#if defined(__SSE__) && !defined(__NO_INLINE__) && \
+#if defined(__x86_64__) && defined(__SSE__) && !defined(__NO_INLINE__) && \
     !defined(__clang__) && defined(GCC_VERSION) && (GCC_VERSION < 40900)
 static float __attribute__((always_inline)) inline _i2f(int v) {
     float x;
diff --git a/src/libImaging/Jpeg.h b/src/libImaging/Jpeg.h
index 1d7550818..7cdba9022 100644
--- a/src/libImaging/Jpeg.h
+++ b/src/libImaging/Jpeg.h
@@ -74,6 +74,9 @@ typedef struct {
     /* Optimize Huffman tables (slow) */
     int optimize;
 
+    /* Disable automatic conversion of RGB images to YCbCr if non-zero */
+    int keep_rgb;
+
     /* Stream type (0=full, 1=tables only, 2=image only) */
     int streamtype;
 
@@ -83,6 +86,10 @@ typedef struct {
     /* Chroma Subsampling (-1=default, 0=none, 1=medium, 2=high) */
     int subsampling;
 
+    /* Restart marker interval, in MCU blocks or MCU rows, or 0 for none */
+    unsigned int restart_marker_blocks;
+    unsigned int restart_marker_rows;
+
     /* Converter input mode (input to the shuffler) */
     char rawmode[8 + 1];
 
diff --git a/src/libImaging/Jpeg2K.h b/src/libImaging/Jpeg2K.h
index e8d92f7b6..6fbbf7311 100644
--- a/src/libImaging/Jpeg2K.h
+++ b/src/libImaging/Jpeg2K.h
@@ -104,10 +104,3 @@ typedef struct {
     int plt;
 
 } JPEG2KENCODESTATE;
-
-/*
- * Local Variables:
- * c-basic-offset: 4
- * End:
- *
- */
diff --git a/src/libImaging/Jpeg2KDecode.c b/src/libImaging/Jpeg2KDecode.c
index cff30e2d0..fc927d2f0 100644
--- a/src/libImaging/Jpeg2KDecode.c
+++ b/src/libImaging/Jpeg2KDecode.c
@@ -67,7 +67,8 @@ j2k_skip(OPJ_OFF_T p_nb_bytes, void *p_user_data) {
 /* -------------------------------------------------------------------- */
 
 typedef void (*j2k_unpacker_t)(
-    opj_image_t *in, const JPEG2KTILEINFO *tileInfo, const UINT8 *data, Imaging im);
+    opj_image_t *in, const JPEG2KTILEINFO *tileInfo, const UINT8 *data, Imaging im
+);
 
 struct j2k_decode_unpacker {
     const char *mode;
@@ -89,10 +90,8 @@ j2ku_shift(unsigned x, int n) {
 
 static void
 j2ku_gray_l(
-    opj_image_t *in,
-    const JPEG2KTILEINFO *tileinfo,
-    const UINT8 *tiledata,
-    Imaging im) {
+    opj_image_t *in, const JPEG2KTILEINFO *tileinfo, const UINT8 *tiledata, Imaging im
+) {
     unsigned x0 = tileinfo->x0 - in->x0, y0 = tileinfo->y0 - in->y0;
     unsigned w = tileinfo->x1 - tileinfo->x0;
     unsigned h = tileinfo->y1 - tileinfo->y0;
@@ -145,10 +144,8 @@ j2ku_gray_l(
 
 static void
 j2ku_gray_i(
-    opj_image_t *in,
-    const JPEG2KTILEINFO *tileinfo,
-    const UINT8 *tiledata,
-    Imaging im) {
+    opj_image_t *in, const JPEG2KTILEINFO *tileinfo, const UINT8 *tiledata, Imaging im
+) {
     unsigned x0 = tileinfo->x0 - in->x0, y0 = tileinfo->y0 - in->y0;
     unsigned w = tileinfo->x1 - tileinfo->x0;
     unsigned h = tileinfo->y1 - tileinfo->y0;
@@ -183,9 +180,9 @@ j2ku_gray_i(
                 UINT16 *row = (UINT16 *)im->image[y0 + y] + x0;
                 for (x = 0; x < w; ++x) {
                     UINT16 pixel = j2ku_shift(offset + *data++, shift);
-                    #ifdef WORDS_BIGENDIAN
-                        pixel = (pixel >> 8) | (pixel << 8);
-                    #endif
+#ifdef WORDS_BIGENDIAN
+                    pixel = (pixel >> 8) | (pixel << 8);
+#endif
                     *row++ = pixel;
                 }
             }
@@ -204,10 +201,8 @@ j2ku_gray_i(
 
 static void
 j2ku_gray_rgb(
-    opj_image_t *in,
-    const JPEG2KTILEINFO *tileinfo,
-    const UINT8 *tiledata,
-    Imaging im) {
+    opj_image_t *in, const JPEG2KTILEINFO *tileinfo, const UINT8 *tiledata, Imaging im
+) {
     unsigned x0 = tileinfo->x0 - in->x0, y0 = tileinfo->y0 - in->y0;
     unsigned w = tileinfo->x1 - tileinfo->x0;
     unsigned h = tileinfo->y1 - tileinfo->y0;
@@ -268,10 +263,8 @@ j2ku_gray_rgb(
 
 static void
 j2ku_graya_la(
-    opj_image_t *in,
-    const JPEG2KTILEINFO *tileinfo,
-    const UINT8 *tiledata,
-    Imaging im) {
+    opj_image_t *in, const JPEG2KTILEINFO *tileinfo, const UINT8 *tiledata, Imaging im
+) {
     unsigned x0 = tileinfo->x0 - in->x0, y0 = tileinfo->y0 - in->y0;
     unsigned w = tileinfo->x1 - tileinfo->x0;
     unsigned h = tileinfo->y1 - tileinfo->y0;
@@ -347,10 +340,8 @@ j2ku_graya_la(
 
 static void
 j2ku_srgb_rgb(
-    opj_image_t *in,
-    const JPEG2KTILEINFO *tileinfo,
-    const UINT8 *tiledata,
-    Imaging im) {
+    opj_image_t *in, const JPEG2KTILEINFO *tileinfo, const UINT8 *tiledata, Imaging im
+) {
     unsigned x0 = tileinfo->x0 - in->x0, y0 = tileinfo->y0 - in->y0;
     unsigned w = tileinfo->x1 - tileinfo->x0;
     unsigned h = tileinfo->y1 - tileinfo->y0;
@@ -413,10 +404,8 @@ j2ku_srgb_rgb(
 
 static void
 j2ku_sycc_rgb(
-    opj_image_t *in,
-    const JPEG2KTILEINFO *tileinfo,
-    const UINT8 *tiledata,
-    Imaging im) {
+    opj_image_t *in, const JPEG2KTILEINFO *tileinfo, const UINT8 *tiledata, Imaging im
+) {
     unsigned x0 = tileinfo->x0 - in->x0, y0 = tileinfo->y0 - in->y0;
     unsigned w = tileinfo->x1 - tileinfo->x0;
     unsigned h = tileinfo->y1 - tileinfo->y0;
@@ -482,10 +471,8 @@ j2ku_sycc_rgb(
 
 static void
 j2ku_srgba_rgba(
-    opj_image_t *in,
-    const JPEG2KTILEINFO *tileinfo,
-    const UINT8 *tiledata,
-    Imaging im) {
+    opj_image_t *in, const JPEG2KTILEINFO *tileinfo, const UINT8 *tiledata, Imaging im
+) {
     unsigned x0 = tileinfo->x0 - in->x0, y0 = tileinfo->y0 - in->y0;
     unsigned w = tileinfo->x1 - tileinfo->x0;
     unsigned h = tileinfo->y1 - tileinfo->y0;
@@ -547,10 +534,8 @@ j2ku_srgba_rgba(
 
 static void
 j2ku_sycca_rgba(
-    opj_image_t *in,
-    const JPEG2KTILEINFO *tileinfo,
-    const UINT8 *tiledata,
-    Imaging im) {
+    opj_image_t *in, const JPEG2KTILEINFO *tileinfo, const UINT8 *tiledata, Imaging im
+) {
     unsigned x0 = tileinfo->x0 - in->x0, y0 = tileinfo->y0 - in->y0;
     unsigned w = tileinfo->x1 - tileinfo->x0;
     unsigned h = tileinfo->y1 - tileinfo->y0;
@@ -615,6 +600,8 @@ j2ku_sycca_rgba(
 
 static const struct j2k_decode_unpacker j2k_unpackers[] = {
     {"L", OPJ_CLRSPC_GRAY, 1, 0, j2ku_gray_l},
+    {"P", OPJ_CLRSPC_SRGB, 1, 0, j2ku_gray_l},
+    {"PA", OPJ_CLRSPC_SRGB, 2, 0, j2ku_graya_la},
     {"I;16", OPJ_CLRSPC_GRAY, 1, 0, j2ku_gray_i},
     {"I;16B", OPJ_CLRSPC_GRAY, 1, 0, j2ku_gray_i},
     {"LA", OPJ_CLRSPC_GRAY, 2, 0, j2ku_graya_la},
@@ -630,6 +617,7 @@ static const struct j2k_decode_unpacker j2k_unpackers[] = {
     {"RGBA", OPJ_CLRSPC_SYCC, 3, 1, j2ku_sycc_rgb},
     {"RGBA", OPJ_CLRSPC_SRGB, 4, 1, j2ku_srgba_rgba},
     {"RGBA", OPJ_CLRSPC_SYCC, 4, 1, j2ku_sycca_rgba},
+    {"CMYK", OPJ_CLRSPC_CMYK, 4, 1, j2ku_srgba_rgba},
 };
 
 /* -------------------------------------------------------------------- */
@@ -710,8 +698,7 @@ j2k_decode_entry(Imaging im, ImagingCodecState state) {
     }
 
     /* Check that this image is something we can handle */
-    if (image->numcomps < 1 || image->numcomps > 4 ||
-        image->color_space == OPJ_CLRSPC_UNKNOWN) {
+    if (image->numcomps < 1 || image->numcomps > 4) {
         state->errcode = IMAGING_CODEC_BROKEN;
         state->state = J2K_STATE_FAILED;
         goto quick_exit;
@@ -756,7 +743,7 @@ j2k_decode_entry(Imaging im, ImagingCodecState state) {
     /* Find the correct unpacker */
     color_space = image->color_space;
 
-    if (color_space == OPJ_CLRSPC_UNSPECIFIED) {
+    if (color_space == OPJ_CLRSPC_UNKNOWN || color_space == OPJ_CLRSPC_UNSPECIFIED) {
         switch (image->numcomps) {
             case 1:
             case 2:
@@ -775,7 +762,7 @@ j2k_decode_entry(Imaging im, ImagingCodecState state) {
                         color_space = OPJ_CLRSPC_SYCC;
                         break;
                 }
-            break;
+                break;
         }
     }
 
@@ -812,7 +799,8 @@ j2k_decode_entry(Imaging im, ImagingCodecState state) {
                 &tile_info.x1,
                 &tile_info.y1,
                 &tile_info.nb_comps,
-                &should_continue)) {
+                &should_continue
+            )) {
             state->errcode = IMAGING_CODEC_BROKEN;
             state->state = J2K_STATE_FAILED;
             goto quick_exit;
@@ -861,7 +849,7 @@ j2k_decode_entry(Imaging im, ImagingCodecState state) {
          a, and then a malicious file could have a smaller tile_bytes
         */
 
-        for (n=0; n < tile_info.nb_comps; n++) {
+        for (n = 0; n < tile_info.nb_comps; n++) {
             // see csize /acsize calcs
             int csize = (image->comps[n].prec + 7) >> 3;
             csize = (csize == 3) ? 4 : csize;
@@ -903,7 +891,8 @@ j2k_decode_entry(Imaging im, ImagingCodecState state) {
                 tile_info.tile_index,
                 (OPJ_BYTE *)state->buffer,
                 tile_info.data_size,
-                stream)) {
+                stream
+            )) {
             state->errcode = IMAGING_CODEC_BROKEN;
             state->state = J2K_STATE_FAILED;
             goto quick_exit;
@@ -990,10 +979,3 @@ ImagingJpeg2KVersion(void) {
 }
 
 #endif /* HAVE_OPENJPEG */
-
-/*
- * Local Variables:
- * c-basic-offset: 4
- * End:
- *
- */
diff --git a/src/libImaging/Jpeg2KEncode.c b/src/libImaging/Jpeg2KEncode.c
index de8586706..d30ccde60 100644
--- a/src/libImaging/Jpeg2KEncode.c
+++ b/src/libImaging/Jpeg2KEncode.c
@@ -89,7 +89,8 @@ j2k_seek(OPJ_OFF_T p_nb_bytes, void *p_user_data) {
 /* -------------------------------------------------------------------- */
 
 typedef void (*j2k_pack_tile_t)(
-    Imaging im, UINT8 *buf, unsigned x0, unsigned y0, unsigned w, unsigned h);
+    Imaging im, UINT8 *buf, unsigned x0, unsigned y0, unsigned w, unsigned h
+);
 
 static void
 j2k_pack_l(Imaging im, UINT8 *buf, unsigned x0, unsigned y0, unsigned w, unsigned h) {
@@ -157,7 +158,8 @@ j2k_pack_rgb(Imaging im, UINT8 *buf, unsigned x0, unsigned y0, unsigned w, unsig
 
 static void
 j2k_pack_rgba(
-    Imaging im, UINT8 *buf, unsigned x0, unsigned y0, unsigned w, unsigned h) {
+    Imaging im, UINT8 *buf, unsigned x0, unsigned y0, unsigned w, unsigned h
+) {
     UINT8 *pr = buf;
     UINT8 *pg = pr + w * h;
     UINT8 *pb = pg + w * h;
@@ -205,8 +207,8 @@ j2k_set_cinema_params(Imaging im, int components, opj_cparameters_t *params) {
 
     if (params->cp_cinema == OPJ_CINEMA4K_24) {
         float max_rate =
-            ((float)(components * im->xsize * im->ysize * 8) /
-             (CINEMA_24_CS_LENGTH * 8));
+            ((float)(components * im->xsize * im->ysize * 8) / (CINEMA_24_CS_LENGTH * 8)
+            );
 
         params->POC[0].tile = 1;
         params->POC[0].resno0 = 0;
@@ -241,8 +243,8 @@ j2k_set_cinema_params(Imaging im, int components, opj_cparameters_t *params) {
         params->max_comp_size = COMP_24_CS_MAX_LENGTH;
     } else {
         float max_rate =
-            ((float)(components * im->xsize * im->ysize * 8) /
-             (CINEMA_48_CS_LENGTH * 8));
+            ((float)(components * im->xsize * im->ysize * 8) / (CINEMA_48_CS_LENGTH * 8)
+            );
 
         for (n = 0; n < params->tcp_numlayers; ++n) {
             rate = 0;
@@ -383,8 +385,7 @@ j2k_encode_entry(Imaging im, ImagingCodecState state) {
         float *pq;
 
         if (len > 0) {
-            if ((size_t)len >
-                sizeof(params.tcp_rates) / sizeof(params.tcp_rates[0])) {
+            if ((size_t)len > sizeof(params.tcp_rates) / sizeof(params.tcp_rates[0])) {
                 len = sizeof(params.tcp_rates) / sizeof(params.tcp_rates[0]);
             }
 
@@ -464,7 +465,8 @@ j2k_encode_entry(Imaging im, ImagingCodecState state) {
     }
 
     if (!context->num_resolutions) {
-        while (tile_width < (1U << (params.numresolution - 1U)) || tile_height < (1U << (params.numresolution - 1U))) {
+        while (tile_width < (1U << (params.numresolution - 1U)) ||
+               tile_height < (1U << (params.numresolution - 1U))) {
             params.numresolution -= 1;
         }
     }
@@ -490,6 +492,8 @@ j2k_encode_entry(Imaging im, ImagingCodecState state) {
 
     if (strcmp(im->mode, "RGBA") == 0) {
         image->comps[3].alpha = 1;
+    } else if (strcmp(im->mode, "LA") == 0) {
+        image->comps[1].alpha = 1;
     }
 
     opj_set_error_handler(codec, j2k_error, context);
@@ -648,10 +652,3 @@ ImagingJpeg2KEncodeCleanup(ImagingCodecState state) {
 }
 
 #endif /* HAVE_OPENJPEG */
-
-/*
- * Local Variables:
- * c-basic-offset: 4
- * End:
- *
- */
diff --git a/src/libImaging/JpegDecode.c b/src/libImaging/JpegDecode.c
index 55d10a81a..2970f56d1 100644
--- a/src/libImaging/JpegDecode.c
+++ b/src/libImaging/JpegDecode.c
@@ -48,7 +48,7 @@ char *libjpeg_turbo_version = NULL;
 #endif
 
 int
-ImagingJpegUseJCSExtensions() {
+ImagingJpegUseJCSExtensions(void) {
     int use_jcs_extensions = 0;
 #ifdef JCS_EXTENSIONS
 #if defined(LIBJPEG_TURBO_VERSION_NUMBER)
@@ -180,7 +180,7 @@ ImagingJpegDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t by
 
             /* Decoder settings */
 
-            /* jpegmode indicates whats in the file; if not set, we'll
+            /* jpegmode indicates what's in the file; if not set, we'll
                trust the decoder */
             if (strcmp(context->jpegmode, "L") == 0) {
                 context->cinfo.jpeg_color_space = JCS_GRAYSCALE;
@@ -206,9 +206,8 @@ ImagingJpegDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t by
                 context->cinfo.out_color_space = JCS_EXT_RGBX;
             }
 #endif
-            else if (
-                strcmp(context->rawmode, "CMYK") == 0 ||
-                strcmp(context->rawmode, "CMYK;I") == 0) {
+            else if (strcmp(context->rawmode, "CMYK") == 0 ||
+                     strcmp(context->rawmode, "CMYK;I") == 0) {
                 context->cinfo.out_color_space = JCS_CMYK;
             } else if (strcmp(context->rawmode, "YCbCr") == 0) {
                 context->cinfo.out_color_space = JCS_YCbCr;
@@ -256,7 +255,8 @@ ImagingJpegDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t by
                     (UINT8 *)im->image[state->y + state->yoff] +
                         state->xoff * im->pixelsize,
                     state->buffer,
-                    state->xsize);
+                    state->xsize
+                );
                 state->y++;
             }
             if (ok != 1) {
diff --git a/src/libImaging/JpegEncode.c b/src/libImaging/JpegEncode.c
index 2a24eff39..4372d51d5 100644
--- a/src/libImaging/JpegEncode.c
+++ b/src/libImaging/JpegEncode.c
@@ -137,6 +137,30 @@ ImagingJpegEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
             /* Compressor configuration */
             jpeg_set_defaults(&context->cinfo);
 
+            /* Prevent RGB -> YCbCr conversion */
+            if (context->keep_rgb) {
+                switch (context->cinfo.in_color_space) {
+                    case JCS_RGB:
+#ifdef JCS_EXTENSIONS
+                    case JCS_EXT_RGBX:
+#endif
+                        switch (context->subsampling) {
+                            case -1: /* Default */
+                            case 0:  /* No subsampling */
+                                break;
+                            default:
+                                /* Would subsample the green and blue
+                                   channels, which doesn't make sense */
+                                state->errcode = IMAGING_CODEC_CONFIG;
+                                return -1;
+                        }
+                        jpeg_set_colorspace(&context->cinfo, JCS_RGB);
+                        break;
+                    default:
+                        break;
+                }
+            }
+
             /* Use custom quantization tables */
             if (context->qtables) {
                 int i;
@@ -151,7 +175,8 @@ ImagingJpegEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
                         i,
                         &context->qtables[i * DCTSIZE2],
                         quality,
-                        FALSE);
+                        FALSE
+                    );
                     context->cinfo.comp_info[i].quant_tbl_no = i;
                     last_q = i;
                 }
@@ -159,7 +184,8 @@ ImagingJpegEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
                     // jpeg_set_defaults created two qtables internally, but we only
                     // wanted one.
                     jpeg_add_quant_table(
-                        &context->cinfo, 1, &context->qtables[0], quality, FALSE);
+                        &context->cinfo, 1, &context->qtables[0], quality, FALSE
+                    );
                 }
                 for (i = last_q; i < context->cinfo.num_components; i++) {
                     context->cinfo.comp_info[i].quant_tbl_no = last_q;
@@ -210,6 +236,8 @@ ImagingJpegEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
             }
             context->cinfo.smoothing_factor = context->smooth;
             context->cinfo.optimize_coding = (boolean)context->optimize;
+            context->cinfo.restart_interval = context->restart_marker_blocks;
+            context->cinfo.restart_in_rows = context->restart_marker_rows;
             if (context->xdpi > 0 && context->ydpi > 0) {
                 context->cinfo.write_JFIF_header = TRUE;
                 context->cinfo.density_unit = 1; /* dots per inch */
@@ -218,9 +246,9 @@ ImagingJpegEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
             }
             switch (context->streamtype) {
                 case 1:
-                    /* tables only -- not yet implemented */
-                    state->errcode = IMAGING_CODEC_CONFIG;
-                    return -1;
+                    /* tables only */
+                    jpeg_write_tables(&context->cinfo);
+                    goto cleanup;
                 case 2:
                     /* image only */
                     jpeg_suppress_tables(&context->cinfo, TRUE);
@@ -247,7 +275,8 @@ ImagingJpegEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
                     &context->cinfo,
                     JPEG_APP0 + 1,
                     (unsigned char *)context->rawExif,
-                    context->rawExifLen);
+                    context->rawExifLen
+                );
             }
 
             state->state++;
@@ -263,7 +292,8 @@ ImagingJpegEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
                 memcpy(
                     context->destination.pub.next_output_byte,
                     context->extra + context->extra_offset,
-                    n);
+                    n
+                );
                 context->destination.pub.next_output_byte += n;
                 context->destination.pub.free_in_buffer -= n;
                 context->extra_offset += n;
@@ -279,7 +309,12 @@ ImagingJpegEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
         case 4:
 
             if (context->comment) {
-                jpeg_write_marker(&context->cinfo, JPEG_COM, (unsigned char *)context->comment, context->comment_size);
+                jpeg_write_marker(
+                    &context->cinfo,
+                    JPEG_COM,
+                    (unsigned char *)context->comment,
+                    context->comment_size
+                );
             }
             state->state++;
 
@@ -294,7 +329,8 @@ ImagingJpegEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
                     state->buffer,
                     (UINT8 *)im->image[state->y + state->yoff] +
                         state->xoff * im->pixelsize,
-                    state->xsize);
+                    state->xsize
+                );
                 ok = jpeg_write_scanlines(&context->cinfo, &state->buffer, 1);
                 if (ok != 1) {
                     break;
@@ -316,6 +352,7 @@ ImagingJpegEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
             }
             jpeg_finish_compress(&context->cinfo);
 
+cleanup:
             /* Clean up */
             if (context->comment) {
                 free(context->comment);
diff --git a/src/libImaging/Matrix.c b/src/libImaging/Matrix.c
index 182eb62a7..ec7f4d93e 100644
--- a/src/libImaging/Matrix.c
+++ b/src/libImaging/Matrix.c
@@ -24,11 +24,11 @@ ImagingConvertMatrix(Imaging im, const char *mode, float m[]) {
     ImagingSectionCookie cookie;
 
     /* Assume there's enough data in the buffer */
-    if (!im) {
+    if (!im || im->bands != 3) {
         return (Imaging)ImagingError_ModeError();
     }
 
-    if (strcmp(mode, "L") == 0 && im->bands == 3) {
+    if (strcmp(mode, "L") == 0) {
         imOut = ImagingNewDirty("L", im->xsize, im->ysize);
         if (!imOut) {
             return NULL;
@@ -47,7 +47,7 @@ ImagingConvertMatrix(Imaging im, const char *mode, float m[]) {
         }
         ImagingSectionLeave(&cookie);
 
-    } else if (strlen(mode) == 3 && im->bands == 3) {
+    } else if (strlen(mode) == 3) {
         imOut = ImagingNewDirty(mode, im->xsize, im->ysize);
         if (!imOut) {
             return NULL;
diff --git a/src/libImaging/Pack.c b/src/libImaging/Pack.c
index 14c8f1461..c29473d90 100644
--- a/src/libImaging/Pack.c
+++ b/src/libImaging/Pack.c
@@ -258,16 +258,6 @@ void
 ImagingPackRGB(UINT8 *out, const UINT8 *in, int pixels) {
     int i = 0;
     /* RGB triplets */
-#ifdef __sparc
-    /* SPARC CPUs cannot read integers from nonaligned addresses. */
-    for (; i < pixels; i++) {
-        out[0] = in[R];
-        out[1] = in[G];
-        out[2] = in[B];
-        out += 3;
-        in += 4;
-    }
-#else
     for (; i < pixels - 1; i++) {
         memcpy(out, in + i * 4, 4);
         out += 3;
@@ -278,7 +268,6 @@ ImagingPackRGB(UINT8 *out, const UINT8 *in, int pixels) {
         out[2] = in[i * 4 + B];
         out += 3;
     }
-#endif
 }
 
 void
@@ -339,7 +328,7 @@ ImagingPackXBGR(UINT8 *out, const UINT8 *in, int pixels) {
 void
 ImagingPackBGRA(UINT8 *out, const UINT8 *in, int pixels) {
     int i;
-    /* BGRX, reversed bytes with right padding */
+    /* BGRA, reversed bytes with right alpha */
     for (i = 0; i < pixels; i++) {
         out[0] = in[B];
         out[1] = in[G];
@@ -353,7 +342,7 @@ ImagingPackBGRA(UINT8 *out, const UINT8 *in, int pixels) {
 void
 ImagingPackABGR(UINT8 *out, const UINT8 *in, int pixels) {
     int i;
-    /* XBGR, reversed bytes with left padding */
+    /* ABGR, reversed bytes with left alpha */
     for (i = 0; i < pixels; i++) {
         out[0] = in[A];
         out[1] = in[B];
@@ -549,16 +538,16 @@ static struct {
     {"1", "1;IR", 1, pack1IR},
     {"1", "L", 8, pack1L},
 
-    /* greyscale */
+    /* grayscale */
     {"L", "L", 8, copy1},
     {"L", "L;16", 16, packL16},
     {"L", "L;16B", 16, packL16B},
 
-    /* greyscale w. alpha */
+    /* grayscale w. alpha */
     {"LA", "LA", 16, packLA},
     {"LA", "LA;L", 16, packLAL},
 
-    /* greyscale w. alpha premultiplied */
+    /* grayscale w. alpha premultiplied */
     {"La", "La", 16, packLA},
 
     /* palette */
diff --git a/src/libImaging/PackDecode.c b/src/libImaging/PackDecode.c
index 7dd432b91..52f1ac502 100644
--- a/src/libImaging/PackDecode.c
+++ b/src/libImaging/PackDecode.c
@@ -17,7 +17,8 @@
 
 int
 ImagingPackbitsDecode(
-    Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t bytes) {
+    Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t bytes
+) {
     UINT8 n;
     UINT8 *ptr;
     int i;
@@ -79,7 +80,8 @@ ImagingPackbitsDecode(
                 (UINT8 *)im->image[state->y + state->yoff] +
                     state->xoff * im->pixelsize,
                 state->buffer,
-                state->xsize);
+                state->xsize
+            );
 
             state->x = 0;
 
diff --git a/src/libImaging/Palette.c b/src/libImaging/Palette.c
index 71a095c2c..78916bca5 100644
--- a/src/libImaging/Palette.c
+++ b/src/libImaging/Palette.c
@@ -39,11 +39,8 @@ ImagingPaletteNew(const char *mode) {
     strncpy(palette->mode, mode, IMAGING_MODE_LENGTH - 1);
     palette->mode[IMAGING_MODE_LENGTH - 1] = 0;
 
-    /* Initialize to ramp */
-    palette->size = 256;
+    palette->size = 0;
     for (i = 0; i < 256; i++) {
-        palette->palette[i * 4 + 0] = palette->palette[i * 4 + 1] =
-            palette->palette[i * 4 + 2] = (UINT8)i;
         palette->palette[i * 4 + 3] = 255; /* opaque */
     }
 
@@ -62,16 +59,10 @@ ImagingPaletteNewBrowser(void) {
         return NULL;
     }
 
-    /* Blank out unused entries */
     /* FIXME: Add 10-level windows palette here? */
 
-    for (i = 0; i < 10; i++) {
-        palette->palette[i * 4 + 0] = palette->palette[i * 4 + 1] =
-            palette->palette[i * 4 + 2] = 0;
-    }
-
     /* Simple 6x6x6 colour cube */
-
+    i = 10;
     for (b = 0; b < 256; b += 51) {
         for (g = 0; g < 256; g += 51) {
             for (r = 0; r < 256; r += 51) {
@@ -82,14 +73,9 @@ ImagingPaletteNewBrowser(void) {
             }
         }
     }
+    palette->size = i;
 
-    /* Blank out unused entries */
-    /* FIXME: add 30-level greyscale wedge here? */
-
-    for (; i < 256; i++) {
-        palette->palette[i * 4 + 0] = palette->palette[i * 4 + 1] =
-            palette->palette[i * 4 + 2] = 0;
-    }
+    /* FIXME: add 30-level grayscale wedge here? */
 
     return palette;
 }
diff --git a/src/libImaging/Paste.c b/src/libImaging/Paste.c
index acf5202e5..86085942a 100644
--- a/src/libImaging/Paste.c
+++ b/src/libImaging/Paste.c
@@ -33,7 +33,8 @@ paste(
     int sy,
     int xsize,
     int ysize,
-    int pixelsize) {
+    int pixelsize
+) {
     /* paste opaque region */
 
     int y;
@@ -59,21 +60,39 @@ paste_mask_1(
     int sy,
     int xsize,
     int ysize,
-    int pixelsize) {
+    int pixelsize
+) {
     /* paste with mode "1" mask */
 
     int x, y;
 
     if (imOut->image8) {
+        int in_i16 = strncmp(imIn->mode, "I;16", 4) == 0;
+        int out_i16 = strncmp(imOut->mode, "I;16", 4) == 0;
         for (y = 0; y < ysize; y++) {
             UINT8 *out = imOut->image8[y + dy] + dx;
+            if (out_i16) {
+                out += dx;
+            }
             UINT8 *in = imIn->image8[y + sy] + sx;
+            if (in_i16) {
+                in += sx;
+            }
             UINT8 *mask = imMask->image8[y + sy] + sx;
             for (x = 0; x < xsize; x++) {
-                if (*mask++) {
+                if (*mask) {
                     *out = *in;
                 }
-                out++, in++;
+                if (in_i16) {
+                    in++;
+                }
+                if (out_i16) {
+                    out++;
+                    if (*mask) {
+                        *out = *in;
+                    }
+                }
+                out++, in++, mask++;
             }
         }
 
@@ -103,7 +122,8 @@ paste_mask_L(
     int sy,
     int xsize,
     int ysize,
-    int pixelsize) {
+    int pixelsize
+) {
     /* paste with mode "L" matte */
 
     int x, y;
@@ -150,7 +170,8 @@ paste_mask_RGBA(
     int sy,
     int xsize,
     int ysize,
-    int pixelsize) {
+    int pixelsize
+) {
     /* paste with mode "RGBA" matte */
 
     int x, y;
@@ -197,7 +218,8 @@ paste_mask_RGBa(
     int sy,
     int xsize,
     int ysize,
-    int pixelsize) {
+    int pixelsize
+) {
     /* paste with mode "RGBa" matte */
 
     int x, y;
@@ -235,7 +257,8 @@ paste_mask_RGBa(
 
 int
 ImagingPaste(
-    Imaging imOut, Imaging imIn, Imaging imMask, int dx0, int dy0, int dx1, int dy1) {
+    Imaging imOut, Imaging imIn, Imaging imMask, int dx0, int dy0, int dx1, int dy1
+) {
     int xsize, ysize;
     int pixelsize;
     int sx0, sy0;
@@ -298,13 +321,15 @@ ImagingPaste(
     } else if (strcmp(imMask->mode, "LA") == 0 || strcmp(imMask->mode, "RGBA") == 0) {
         ImagingSectionEnter(&cookie);
         paste_mask_RGBA(
-            imOut, imIn, imMask, dx0, dy0, sx0, sy0, xsize, ysize, pixelsize);
+            imOut, imIn, imMask, dx0, dy0, sx0, sy0, xsize, ysize, pixelsize
+        );
         ImagingSectionLeave(&cookie);
 
     } else if (strcmp(imMask->mode, "RGBa") == 0) {
         ImagingSectionEnter(&cookie);
         paste_mask_RGBa(
-            imOut, imIn, imMask, dx0, dy0, sx0, sy0, xsize, ysize, pixelsize);
+            imOut, imIn, imMask, dx0, dy0, sx0, sy0, xsize, ysize, pixelsize
+        );
         ImagingSectionLeave(&cookie);
 
     } else {
@@ -317,13 +342,8 @@ ImagingPaste(
 
 static inline void
 fill(
-    Imaging imOut,
-    const void *ink_,
-    int dx,
-    int dy,
-    int xsize,
-    int ysize,
-    int pixelsize) {
+    Imaging imOut, const void *ink_, int dx, int dy, int xsize, int ysize, int pixelsize
+) {
     /* fill opaque region */
 
     int x, y;
@@ -361,7 +381,8 @@ fill_mask_1(
     int sy,
     int xsize,
     int ysize,
-    int pixelsize) {
+    int pixelsize
+) {
     /* fill with mode "1" mask */
 
     int x, y;
@@ -408,35 +429,36 @@ fill_mask_L(
     int sy,
     int xsize,
     int ysize,
-    int pixelsize) {
+    int pixelsize
+) {
     /* fill with mode "L" matte */
 
     int x, y, i;
     unsigned int tmp1;
 
     if (imOut->image8) {
+        int i16 = strncmp(imOut->mode, "I;16", 4) == 0;
         for (y = 0; y < ysize; y++) {
             UINT8 *out = imOut->image8[y + dy] + dx;
-            if (strncmp(imOut->mode, "I;16", 4) == 0) {
+            if (i16) {
                 out += dx;
             }
             UINT8 *mask = imMask->image8[y + sy] + sx;
             for (x = 0; x < xsize; x++) {
                 *out = BLEND(*mask, *out, ink[0], tmp1);
-                if (strncmp(imOut->mode, "I;16", 4) == 0) {
+                if (i16) {
                     out++;
-                    *out = BLEND(*mask, *out, ink[0], tmp1);
+                    *out = BLEND(*mask, *out, ink[1], tmp1);
                 }
                 out++, mask++;
             }
         }
 
     } else {
-        int alpha_channel = strcmp(imOut->mode, "RGBa") == 0 ||
-                            strcmp(imOut->mode, "RGBA") == 0 ||
-                            strcmp(imOut->mode, "La") == 0 ||
-                            strcmp(imOut->mode, "LA") == 0 ||
-                            strcmp(imOut->mode, "PA") == 0;
+        int alpha_channel =
+            strcmp(imOut->mode, "RGBa") == 0 || strcmp(imOut->mode, "RGBA") == 0 ||
+            strcmp(imOut->mode, "La") == 0 || strcmp(imOut->mode, "LA") == 0 ||
+            strcmp(imOut->mode, "PA") == 0;
         for (y = 0; y < ysize; y++) {
             UINT8 *out = (UINT8 *)imOut->image[y + dy] + dx * pixelsize;
             UINT8 *mask = (UINT8 *)imMask->image[y + sy] + sx;
@@ -467,7 +489,8 @@ fill_mask_RGBA(
     int sy,
     int xsize,
     int ysize,
-    int pixelsize) {
+    int pixelsize
+) {
     /* fill with mode "RGBA" matte */
 
     int x, y, i;
@@ -512,7 +535,8 @@ fill_mask_RGBa(
     int sy,
     int xsize,
     int ysize,
-    int pixelsize) {
+    int pixelsize
+) {
     /* fill with mode "RGBa" matte */
 
     int x, y, i;
@@ -548,13 +572,8 @@ fill_mask_RGBa(
 
 int
 ImagingFill2(
-    Imaging imOut,
-    const void *ink,
-    Imaging imMask,
-    int dx0,
-    int dy0,
-    int dx1,
-    int dy1) {
+    Imaging imOut, const void *ink, Imaging imMask, int dx0, int dy0, int dx1, int dy1
+) {
     ImagingSectionCookie cookie;
     int xsize, ysize;
     int pixelsize;
diff --git a/src/libImaging/PcxDecode.c b/src/libImaging/PcxDecode.c
index c95ffc869..942c8dc22 100644
--- a/src/libImaging/PcxDecode.c
+++ b/src/libImaging/PcxDecode.c
@@ -68,7 +68,8 @@ ImagingPcxDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t byt
                     memmove(
                         &state->buffer[i * state->xsize],
                         &state->buffer[i * stride],
-                        state->xsize);
+                        state->xsize
+                    );
                 }
             }
             /* Got a full line, unpack it */
@@ -76,7 +77,8 @@ ImagingPcxDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t byt
                 (UINT8 *)im->image[state->y + state->yoff] +
                     state->xoff * im->pixelsize,
                 state->buffer,
-                state->xsize);
+                state->xsize
+            );
 
             state->x = 0;
 
diff --git a/src/libImaging/PcxEncode.c b/src/libImaging/PcxEncode.c
index 549614bfd..625cf7ffa 100644
--- a/src/libImaging/PcxEncode.c
+++ b/src/libImaging/PcxEncode.c
@@ -71,7 +71,8 @@ ImagingPcxEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
                     state->buffer,
                     (UINT8 *)im->image[state->y + state->yoff] +
                         state->xoff * im->pixelsize,
-                    state->xsize);
+                    state->xsize
+                );
 
                 state->y += 1;
 
diff --git a/src/libImaging/Point.c b/src/libImaging/Point.c
index 8883578cb..6a4060b4b 100644
--- a/src/libImaging/Point.c
+++ b/src/libImaging/Point.c
@@ -134,7 +134,7 @@ ImagingPoint(Imaging imIn, const char *mode, const void *table) {
     ImagingSectionCookie cookie;
     Imaging imOut;
     im_point_context context;
-    void (*point)(Imaging imIn, Imaging imOut, im_point_context * context);
+    void (*point)(Imaging imIn, Imaging imOut, im_point_context *context);
 
     if (!imIn) {
         return (Imaging)ImagingError_ModeError();
@@ -197,8 +197,8 @@ ImagingPoint(Imaging imIn, const char *mode, const void *table) {
     return imOut;
 
 mode_mismatch:
-    return (Imaging)ImagingError_ValueError(
-        "point operation not supported for this mode");
+    return (Imaging
+    )ImagingError_ValueError("point operation not supported for this mode");
 }
 
 Imaging
diff --git a/src/libImaging/Quant.c b/src/libImaging/Quant.c
index 02a4a5c76..a489a882d 100644
--- a/src/libImaging/Quant.c
+++ b/src/libImaging/Quant.c
@@ -36,7 +36,8 @@
 #define UINT32_MAX 0xffffffff
 #endif
 
-#define NO_OUTPUT
+// #define DEBUG
+// #define TEST_NEAREST_NEIGHBOUR
 
 typedef struct {
     uint32_t scale;
@@ -103,7 +104,8 @@ static uint32_t
 pixel_hash(const HashTable *h, const Pixel pixel) {
     PixelHashData *d = (PixelHashData *)hashtable_get_user_data(h);
     return PIXEL_HASH(
-        pixel.c.r >> d->scale, pixel.c.g >> d->scale, pixel.c.b >> d->scale);
+        pixel.c.r >> d->scale, pixel.c.g >> d->scale, pixel.c.b >> d->scale
+    );
 }
 
 static int
@@ -111,9 +113,11 @@ pixel_cmp(const HashTable *h, const Pixel pixel1, const Pixel pixel2) {
     PixelHashData *d = (PixelHashData *)hashtable_get_user_data(h);
     uint32_t A, B;
     A = PIXEL_HASH(
-        pixel1.c.r >> d->scale, pixel1.c.g >> d->scale, pixel1.c.b >> d->scale);
+        pixel1.c.r >> d->scale, pixel1.c.g >> d->scale, pixel1.c.b >> d->scale
+    );
     B = PIXEL_HASH(
-        pixel2.c.r >> d->scale, pixel2.c.g >> d->scale, pixel2.c.b >> d->scale);
+        pixel2.c.r >> d->scale, pixel2.c.g >> d->scale, pixel2.c.b >> d->scale
+    );
     return (A == B) ? 0 : ((A < B) ? -1 : 1);
 }
 
@@ -129,7 +133,8 @@ new_count_func(const HashTable *h, const Pixel key, uint32_t *val) {
 
 static void
 rehash_collide(
-    const HashTable *h, Pixel *keyp, uint32_t *valp, Pixel newkey, uint32_t newval) {
+    const HashTable *h, Pixel *keyp, uint32_t *valp, Pixel newkey, uint32_t newval
+) {
     *valp += newval;
 }
 
@@ -140,7 +145,7 @@ create_pixel_hash(Pixel *pixelData, uint32_t nPixels) {
     PixelHashData *d;
     HashTable *hash;
     uint32_t i;
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     uint32_t timer, timer2, timer3;
 #endif
 
@@ -152,32 +157,33 @@ create_pixel_hash(Pixel *pixelData, uint32_t nPixels) {
     hash = hashtable_new(pixel_hash, pixel_cmp);
     hashtable_set_user_data(hash, d);
     d->scale = 0;
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     timer = timer3 = clock();
 #endif
     for (i = 0; i < nPixels; i++) {
         if (!hashtable_insert_or_update_computed(
-                hash, pixelData[i], new_count_func, exists_count_func)) {
+                hash, pixelData[i], new_count_func, exists_count_func
+            )) {
             ;
         }
         while (hashtable_get_count(hash) > MAX_HASH_ENTRIES) {
             d->scale++;
-#ifndef NO_OUTPUT
+#ifdef DEBUG
             printf("rehashing - new scale: %d\n", (int)d->scale);
             timer2 = clock();
 #endif
             hashtable_rehash_compute(hash, rehash_collide);
-#ifndef NO_OUTPUT
+#ifdef DEBUG
             timer2 = clock() - timer2;
             printf("rehash took %f sec\n", timer2 / (double)CLOCKS_PER_SEC);
             timer += timer2;
 #endif
         }
     }
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("inserts took %f sec\n", (clock() - timer) / (double)CLOCKS_PER_SEC);
 #endif
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("total        %f sec\n", (clock() - timer3) / (double)CLOCKS_PER_SEC);
 #endif
     return hash;
@@ -260,8 +266,7 @@ mergesort_pixels(PixelList *head, int i) {
         return head;
     }
     for (c = t = head; c && t;
-         c = c->next[i], t = (t->next[i]) ? t->next[i]->next[i] : NULL)
-        ;
+         c = c->next[i], t = (t->next[i]) ? t->next[i]->next[i] : NULL);
     if (c) {
         if (c->prev[i]) {
             c->prev[i]->next[i] = NULL;
@@ -300,18 +305,18 @@ mergesort_pixels(PixelList *head, int i) {
     return head;
 }
 
-#if defined(TEST_MERGESORT) || defined(TEST_SORTED)
+#ifdef DEBUG
 static int
 test_sorted(PixelList *pl[3]) {
-    int i, n, l;
+    int i, l;
     PixelList *t;
 
     for (i = 0; i < 3; i++) {
-        n = 0;
         l = 256;
         for (t = pl[i]; t; t = t->next[i]) {
-            if (l < t->p.a.v[i])
+            if (l < t->p.a.v[i]) {
                 return 0;
+            }
             l = t->p.a.v[i];
         }
     }
@@ -336,30 +341,29 @@ splitlists(
     PixelList *nt[2][3],
     uint32_t nCount[2],
     int axis,
-    uint32_t pixelCount) {
+    uint32_t pixelCount
+) {
     uint32_t left;
 
     PixelList *l, *r, *c, *n;
     int i;
     int nRight;
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     int nLeft;
 #endif
     int splitColourVal;
 
-#ifdef TEST_SPLIT
+#ifdef DEBUG
     {
         PixelList *_prevTest, *_nextTest;
         int _i, _nextCount[3], _prevCount[3];
         for (_i = 0; _i < 3; _i++) {
             for (_nextCount[_i] = 0, _nextTest = h[_i];
                  _nextTest && _nextTest->next[_i];
-                 _nextTest = _nextTest->next[_i], _nextCount[_i]++)
-                ;
+                 _nextTest = _nextTest->next[_i], _nextCount[_i]++);
             for (_prevCount[_i] = 0, _prevTest = t[_i];
                  _prevTest && _prevTest->prev[_i];
-                 _prevTest = _prevTest->prev[_i], _prevCount[_i]++)
-                ;
+                 _prevTest = _prevTest->prev[_i], _prevCount[_i]++);
             if (_nextTest != t[_i]) {
                 printf("next-list of axis %d does not end at tail\n", _i);
                 exit(1);
@@ -368,10 +372,8 @@ splitlists(
                 printf("prev-list of axis %d does not end at head\n", _i);
                 exit(1);
             }
-            for (; _nextTest && _nextTest->prev[_i]; _nextTest = _nextTest->prev[_i])
-                ;
-            for (; _prevTest && _prevTest->next[_i]; _prevTest = _prevTest->next[_i])
-                ;
+            for (; _nextTest && _nextTest->prev[_i]; _nextTest = _nextTest->prev[_i]);
+            for (; _prevTest && _prevTest->next[_i]; _prevTest = _prevTest->next[_i]);
             if (_nextTest != h[_i]) {
                 printf("next-list of axis %d does not loop back to head\n", _i);
                 exit(1);
@@ -392,7 +394,8 @@ splitlists(
                     _prevCount[2],
                     _nextCount[0],
                     _nextCount[1],
-                    _nextCount[2]);
+                    _nextCount[2]
+                );
                 exit(1);
             }
         }
@@ -400,14 +403,14 @@ splitlists(
 #endif
     nCount[0] = nCount[1] = 0;
     nRight = 0;
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     nLeft = 0;
 #endif
     for (left = 0, c = h[axis]; c;) {
         left = left + c->count;
         nCount[0] += c->count;
         c->flag = 0;
-#ifndef NO_OUTPUT
+#ifdef DEBUG
         nLeft++;
 #endif
         c = c->next[axis];
@@ -422,7 +425,7 @@ splitlists(
                 break;
             }
             c->flag = 0;
-#ifndef NO_OUTPUT
+#ifdef DEBUG
             nLeft++;
 #endif
             nCount[0] += c->count;
@@ -440,14 +443,14 @@ splitlists(
             }
             c->flag = 1;
             nRight++;
-#ifndef NO_OUTPUT
+#ifdef DEBUG
             nLeft--;
 #endif
             nCount[0] -= c->count;
             nCount[1] += c->count;
         }
     }
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     if (!nLeft) {
         for (c = h[axis]; c; c = c->next[axis]) {
             printf("[%d %d %d]\n", c->p.c.r, c->p.c.g, c->p.c.b);
@@ -509,7 +512,7 @@ split(BoxNode *node) {
     gl = node->tail[1]->p.c.g;
     bh = node->head[2]->p.c.b;
     bl = node->tail[2]->p.c.b;
-#ifdef TEST_SPLIT
+#ifdef DEBUG
     printf("splitting node [%d %d %d] [%d %d %d] ", rl, gl, bl, rh, gh, bh);
 #endif
     f[0] = (rh - rl) * 77;
@@ -524,11 +527,8 @@ split(BoxNode *node) {
             axis = i;
         }
     }
-#ifdef TEST_SPLIT
+#ifdef DEBUG
     printf("along axis %d\n", axis + 1);
-#endif
-
-#ifdef TEST_SPLIT
     {
         PixelList *_prevTest, *_nextTest;
         int _i, _nextCount[3], _prevCount[3];
@@ -536,34 +536,32 @@ split(BoxNode *node) {
             if (node->tail[_i]->next[_i]) {
                 printf("tail is not tail\n");
                 printf(
-                    "node->tail[%d]->next[%d]=%p\n", _i, _i, node->tail[_i]->next[_i]);
+                    "node->tail[%d]->next[%d]=%p\n", _i, _i, node->tail[_i]->next[_i]
+                );
             }
             if (node->head[_i]->prev[_i]) {
                 printf("head is not head\n");
                 printf(
-                    "node->head[%d]->prev[%d]=%p\n", _i, _i, node->head[_i]->prev[_i]);
+                    "node->head[%d]->prev[%d]=%p\n", _i, _i, node->head[_i]->prev[_i]
+                );
             }
         }
 
         for (_i = 0; _i < 3; _i++) {
             for (_nextCount[_i] = 0, _nextTest = node->head[_i];
                  _nextTest && _nextTest->next[_i];
-                 _nextTest = _nextTest->next[_i], _nextCount[_i]++)
-                ;
+                 _nextTest = _nextTest->next[_i], _nextCount[_i]++);
             for (_prevCount[_i] = 0, _prevTest = node->tail[_i];
                  _prevTest && _prevTest->prev[_i];
-                 _prevTest = _prevTest->prev[_i], _prevCount[_i]++)
-                ;
+                 _prevTest = _prevTest->prev[_i], _prevCount[_i]++);
             if (_nextTest != node->tail[_i]) {
                 printf("next-list of axis %d does not end at tail\n", _i);
             }
             if (_prevTest != node->head[_i]) {
                 printf("prev-list of axis %d does not end at head\n", _i);
             }
-            for (; _nextTest && _nextTest->prev[_i]; _nextTest = _nextTest->prev[_i])
-                ;
-            for (; _prevTest && _prevTest->next[_i]; _prevTest = _prevTest->next[_i])
-                ;
+            for (; _nextTest && _nextTest->prev[_i]; _nextTest = _nextTest->prev[_i]);
+            for (; _prevTest && _prevTest->next[_i]; _prevTest = _prevTest->next[_i]);
             if (_nextTest != node->head[_i]) {
                 printf("next-list of axis %d does not loop back to head\n", _i);
             }
@@ -582,20 +580,22 @@ split(BoxNode *node) {
                     _prevCount[2],
                     _nextCount[0],
                     _nextCount[1],
-                    _nextCount[2]);
+                    _nextCount[2]
+                );
             }
         }
     }
 #endif
     node->axis = axis;
     if (!splitlists(
-            node->head, node->tail, heads, tails, newCounts, axis, node->pixelCount)) {
-#ifndef NO_OUTPUT
+            node->head, node->tail, heads, tails, newCounts, axis, node->pixelCount
+        )) {
+#ifdef DEBUG
         printf("list split failed.\n");
 #endif
         return 0;
     }
-#ifdef TEST_SPLIT
+#ifdef DEBUG
     if (!test_sorted(heads[0])) {
         printf("bug in split");
         exit(1);
@@ -621,7 +621,7 @@ split(BoxNode *node) {
         node->head[i] = NULL;
         node->tail[i] = NULL;
     }
-#ifdef TEST_SPLIT
+#ifdef DEBUG
     if (left->head[0]) {
         rh = left->head[0]->p.c.r;
         rl = left->tail[0]->p.c.r;
@@ -668,8 +668,7 @@ median_cut(PixelList *hl[3], uint32_t imPixelCount, int nPixels) {
         return NULL;
     }
     for (i = 0; i < 3; i++) {
-        for (tl[i] = hl[i]; tl[i] && tl[i]->next[i]; tl[i] = tl[i]->next[i])
-            ;
+        for (tl[i] = hl[i]; tl[i] && tl[i]->next[i]; tl[i] = tl[i]->next[i]);
         root->head[i] = hl[i];
         root->tail[i] = tl[i];
     }
@@ -686,7 +685,7 @@ median_cut(PixelList *hl[3], uint32_t imPixelCount, int nPixels) {
             }
         } while (compute_box_volume(thisNode) == 1);
         if (!split(thisNode)) {
-#ifndef NO_OUTPUT
+#ifdef DEBUG
             printf("Oops, split failed...\n");
 #endif
             exit(1);
@@ -715,16 +714,14 @@ free_box_tree(BoxNode *n) {
     free(n);
 }
 
-#ifdef TEST_SPLIT_INTEGRITY
+#ifdef DEBUG
 static int
 checkContained(BoxNode *n, Pixel *pp) {
     if (n->l && n->r) {
         return checkContained(n->l, pp) + checkContained(n->r, pp);
     }
     if (n->l || n->r) {
-#ifndef NO_OUTPUT
         printf("box tree is dead\n");
-#endif
         return 0;
     }
     if (pp->c.r <= n->head[0]->p.c.r && pp->c.r >= n->tail[0]->p.c.r &&
@@ -745,7 +742,7 @@ annotate_hash_table(BoxNode *n, HashTable *h, uint32_t *box) {
         return annotate_hash_table(n->l, h, box) && annotate_hash_table(n->r, h, box);
     }
     if (n->l || n->r) {
-#ifndef NO_OUTPUT
+#ifdef DEBUG
         printf("box tree is dead\n");
 #endif
         return 0;
@@ -753,7 +750,7 @@ annotate_hash_table(BoxNode *n, HashTable *h, uint32_t *box) {
     for (p = n->head[0]; p; p = p->next[0]) {
         PIXEL_UNSCALE(&(p->p), &q, d->scale);
         if (!hashtable_insert(h, q, *box)) {
-#ifndef NO_OUTPUT
+#ifdef DEBUG
             printf("hashtable insert failed\n");
 #endif
             return 0;
@@ -782,7 +779,8 @@ _distance_index_cmp(const void *a, const void *b) {
 
 static int
 resort_distance_tables(
-    uint32_t *avgDist, uint32_t **avgDistSortKey, Pixel *p, uint32_t nEntries) {
+    uint32_t *avgDist, uint32_t **avgDistSortKey, Pixel *p, uint32_t nEntries
+) {
     uint32_t i, j, k;
     uint32_t **skRow;
     uint32_t *skElt;
@@ -811,7 +809,8 @@ resort_distance_tables(
 
 static int
 build_distance_tables(
-    uint32_t *avgDist, uint32_t **avgDistSortKey, Pixel *p, uint32_t nEntries) {
+    uint32_t *avgDist, uint32_t **avgDistSortKey, Pixel *p, uint32_t nEntries
+) {
     uint32_t i, j;
     DistanceWithIndex *dwi;
 
@@ -832,16 +831,9 @@ build_distance_tables(
     }
     for (i = 0; i < nEntries; i++) {
         for (j = 0; j < nEntries; j++) {
-            dwi[j] = (DistanceWithIndex){
-                &(avgDist[i * nEntries + j]),
-                j
-            };
+            dwi[j] = (DistanceWithIndex){&(avgDist[i * nEntries + j]), j};
         }
-        qsort(
-            dwi,
-            nEntries,
-            sizeof(DistanceWithIndex),
-            _distance_index_cmp);
+        qsort(dwi, nEntries, sizeof(DistanceWithIndex), _distance_index_cmp);
         for (j = 0; j < nEntries; j++) {
             avgDistSortKey[i * nEntries + j] = dwi[j].distance;
         }
@@ -858,7 +850,8 @@ map_image_pixels(
     uint32_t nPaletteEntries,
     uint32_t *avgDist,
     uint32_t **avgDistSortKey,
-    uint32_t *pixelArray) {
+    uint32_t *pixelArray
+) {
     uint32_t *aD, **aDSK;
     uint32_t idx;
     uint32_t i, j;
@@ -905,7 +898,8 @@ map_image_pixels_from_quantized_pixels(
     uint32_t **avgDistSortKey,
     uint32_t *pixelArray,
     uint32_t *avg[3],
-    uint32_t *count) {
+    uint32_t *count
+) {
     uint32_t *aD, **aDSK;
     uint32_t idx;
     uint32_t i, j;
@@ -963,7 +957,8 @@ map_image_pixels_from_median_box(
     HashTable *medianBoxHash,
     uint32_t *avgDist,
     uint32_t **avgDistSortKey,
-    uint32_t *pixelArray) {
+    uint32_t *pixelArray
+) {
     uint32_t *aD, **aDSK;
     uint32_t idx;
     uint32_t i, j;
@@ -979,7 +974,7 @@ map_image_pixels_from_median_box(
             continue;
         }
         if (!hashtable_lookup(medianBoxHash, pixelData[i], &pixelVal)) {
-#ifndef NO_OUTPUT
+#ifdef DEBUG
             printf("pixel lookup failed\n");
 #endif
             return 0;
@@ -1015,7 +1010,9 @@ compute_palette_from_median_cut(
     uint32_t nPixels,
     HashTable *medianBoxHash,
     Pixel **palette,
-    uint32_t nPaletteEntries) {
+    uint32_t nPaletteEntries,
+    BoxNode *root
+) {
     uint32_t i;
     uint32_t paletteEntry;
     Pixel *p;
@@ -1043,7 +1040,7 @@ compute_palette_from_median_cut(
         }
     }
     for (i = 0; i < nPixels; i++) {
-#ifdef TEST_SPLIT_INTEGRITY
+#ifdef DEBUG
         if (!(i % 100)) {
             printf("%05d\r", i);
             fflush(stdout);
@@ -1058,7 +1055,7 @@ compute_palette_from_median_cut(
         }
 #endif
         if (!hashtable_lookup(medianBoxHash, pixelData[i], &paletteEntry)) {
-#ifndef NO_OUTPUT
+#ifdef DEBUG
             printf("pixel lookup failed\n");
 #endif
             for (i = 0; i < 3; i++) {
@@ -1068,11 +1065,12 @@ compute_palette_from_median_cut(
             return 0;
         }
         if (paletteEntry >= nPaletteEntries) {
-#ifndef NO_OUTPUT
+#ifdef DEBUG
             printf(
                 "panic - paletteEntry>=nPaletteEntries (%d>=%d)\n",
                 (int)paletteEntry,
-                (int)nPaletteEntries);
+                (int)nPaletteEntries
+            );
 #endif
             for (i = 0; i < 3; i++) {
                 free(avg[i]);
@@ -1109,7 +1107,8 @@ compute_palette_from_median_cut(
 
 static int
 recompute_palette_from_averages(
-    Pixel *palette, uint32_t nPaletteEntries, uint32_t *avg[3], uint32_t *count) {
+    Pixel *palette, uint32_t nPaletteEntries, uint32_t *avg[3], uint32_t *count
+) {
     uint32_t i;
 
     for (i = 0; i < nPaletteEntries; i++) {
@@ -1128,7 +1127,8 @@ compute_palette_from_quantized_pixels(
     uint32_t nPaletteEntries,
     uint32_t *avg[3],
     uint32_t *count,
-    uint32_t *qp) {
+    uint32_t *qp
+) {
     uint32_t i;
 
     memset(count, 0, sizeof(uint32_t) * nPaletteEntries);
@@ -1137,7 +1137,7 @@ compute_palette_from_quantized_pixels(
     }
     for (i = 0; i < nPixels; i++) {
         if (qp[i] >= nPaletteEntries) {
-#ifndef NO_OUTPUT
+#ifdef DEBUG
             printf("scream\n");
 #endif
             return 0;
@@ -1162,7 +1162,8 @@ k_means(
     Pixel *paletteData,
     uint32_t nPaletteEntries,
     uint32_t *qp,
-    int threshold) {
+    int threshold
+) {
     uint32_t *avg[3];
     uint32_t *count;
     uint32_t i;
@@ -1204,23 +1205,26 @@ k_means(
         goto error_2;
     }
 
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("[");
     fflush(stdout);
 #endif
     while (1) {
         if (!built) {
             compute_palette_from_quantized_pixels(
-                pixelData, nPixels, paletteData, nPaletteEntries, avg, count, qp);
+                pixelData, nPixels, paletteData, nPaletteEntries, avg, count, qp
+            );
             if (!build_distance_tables(
-                avgDist, avgDistSortKey, paletteData, nPaletteEntries)) {
+                    avgDist, avgDistSortKey, paletteData, nPaletteEntries
+                )) {
                 goto error_3;
             }
             built = 1;
         } else {
             recompute_palette_from_averages(paletteData, nPaletteEntries, avg, count);
             resort_distance_tables(
-                avgDist, avgDistSortKey, paletteData, nPaletteEntries);
+                avgDist, avgDistSortKey, paletteData, nPaletteEntries
+            );
         }
         changes = map_image_pixels_from_quantized_pixels(
             pixelData,
@@ -1231,11 +1235,12 @@ k_means(
             avgDistSortKey,
             qp,
             avg,
-            count);
+            count
+        );
         if (changes < 0) {
             goto error_3;
         }
-#ifndef NO_OUTPUT
+#ifdef DEBUG
         printf(".(%d)", changes);
         fflush(stdout);
 #endif
@@ -1243,7 +1248,7 @@ k_means(
             break;
         }
     }
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("]\n");
 #endif
     if (avgDistSortKey) {
@@ -1290,7 +1295,8 @@ quantize(
     Pixel **palette,
     uint32_t *paletteLength,
     uint32_t **quantizedPixels,
-    int kmeans) {
+    int kmeans
+) {
     PixelList *hl[3];
     HashTable *h;
     BoxNode *root;
@@ -1302,32 +1308,32 @@ quantize(
     uint32_t **avgDistSortKey;
     Pixel *p;
 
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     uint32_t timer, timer2;
 #endif
 
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     timer2 = clock();
     printf("create hash table...");
     fflush(stdout);
     timer = clock();
 #endif
     h = create_pixel_hash(pixelData, nPixels);
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("done (%f)\n", (clock() - timer) / (double)CLOCKS_PER_SEC);
 #endif
     if (!h) {
         goto error_0;
     }
 
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("create lists from hash table...");
     fflush(stdout);
     timer = clock();
 #endif
     hl[0] = hl[1] = hl[2] = NULL;
     hashtable_foreach(h, hash_to_list, hl);
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("done (%f)\n", (clock() - timer) / (double)CLOCKS_PER_SEC);
 #endif
 
@@ -1335,7 +1341,7 @@ quantize(
         goto error_1;
     }
 
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("mergesort lists...");
     fflush(stdout);
     timer = clock();
@@ -1343,47 +1349,47 @@ quantize(
     for (i = 0; i < 3; i++) {
         hl[i] = mergesort_pixels(hl[i], i);
     }
-#ifdef TEST_MERGESORT
+#ifdef DEBUG
     if (!test_sorted(hl)) {
         printf("bug in mergesort\n");
         goto error_1;
     }
-#endif
-#ifndef NO_OUTPUT
     printf("done (%f)\n", (clock() - timer) / (double)CLOCKS_PER_SEC);
 #endif
 
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("median cut...");
     fflush(stdout);
     timer = clock();
 #endif
     root = median_cut(hl, nPixels, nQuantPixels);
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("done (%f)\n", (clock() - timer) / (double)CLOCKS_PER_SEC);
 #endif
     if (!root) {
         goto error_1;
     }
     nPaletteEntries = 0;
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("median cut tree to hash table...");
     fflush(stdout);
     timer = clock();
 #endif
     annotate_hash_table(root, h, &nPaletteEntries);
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("done (%f)\n", (clock() - timer) / (double)CLOCKS_PER_SEC);
 #endif
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("compute palette...\n");
     fflush(stdout);
     timer = clock();
 #endif
-    if (!compute_palette_from_median_cut(pixelData, nPixels, h, &p, nPaletteEntries)) {
+    if (!compute_palette_from_median_cut(
+            pixelData, nPixels, h, &p, nPaletteEntries, root
+        )) {
         goto error_3;
     }
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("done (%f)\n", (clock() - timer) / (double)CLOCKS_PER_SEC);
 #endif
 
@@ -1416,7 +1422,8 @@ quantize(
     }
 
     if (!map_image_pixels_from_median_box(
-            pixelData, nPixels, p, nPaletteEntries, h, avgDist, avgDistSortKey, qp)) {
+            pixelData, nPixels, p, nPaletteEntries, h, avgDist, avgDistSortKey, qp
+        )) {
         goto error_7;
     }
 
@@ -1452,29 +1459,32 @@ quantize(
                 hashtable_insert(h2, pixelData[i], bestmatch);
             }
             if (qp[i] != bestmatch) {
-                printf ("discrepancy in matching algorithms pixel %d [%d %d] %f %f\n",
-                    i,qp[i],bestmatch,
-                    sqrt((double)(_SQR(pixelData[i].c.r-p[qp[i]].c.r)+
-                                  _SQR(pixelData[i].c.g-p[qp[i]].c.g)+
-                                  _SQR(pixelData[i].c.b-p[qp[i]].c.b))),
-                    sqrt((double)(_SQR(pixelData[i].c.r-p[bestmatch].c.r)+
-                                  _SQR(pixelData[i].c.g-p[bestmatch].c.g)+
-                                  _SQR(pixelData[i].c.b-p[bestmatch].c.b)))
-                   );
+                printf(
+                    "discrepancy in matching algorithms pixel %d [%d %d] %f %f\n",
+                    i,
+                    qp[i],
+                    bestmatch,
+                    sqrt((double)(_SQR(pixelData[i].c.r - p[qp[i]].c.r) +
+                                  _SQR(pixelData[i].c.g - p[qp[i]].c.g) +
+                                  _SQR(pixelData[i].c.b - p[qp[i]].c.b))),
+                    sqrt((double)(_SQR(pixelData[i].c.r - p[bestmatch].c.r) +
+                                  _SQR(pixelData[i].c.g - p[bestmatch].c.g) +
+                                  _SQR(pixelData[i].c.b - p[bestmatch].c.b)))
+                );
             }
         }
         hashtable_free(h2);
     }
 #endif
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("k means...\n");
     fflush(stdout);
     timer = clock();
 #endif
-    if (kmeans) {
+    if (kmeans > 0) {
         k_means(pixelData, nPixels, p, nPaletteEntries, qp, kmeans - 1);
     }
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("done (%f)\n", (clock() - timer) / (double)CLOCKS_PER_SEC);
 #endif
 
@@ -1482,7 +1492,7 @@ quantize(
     *palette = p;
     *paletteLength = nPaletteEntries;
 
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("cleanup...");
     fflush(stdout);
     timer = clock();
@@ -1494,7 +1504,7 @@ quantize(
         free(avgDistSortKey);
     }
     destroy_pixel_hash(h);
-#ifndef NO_OUTPUT
+#ifdef DEBUG
     printf("done (%f)\n", (clock() - timer) / (double)CLOCKS_PER_SEC);
     printf("-----\ntotal time %f\n", (clock() - timer2) / (double)CLOCKS_PER_SEC);
 #endif
@@ -1560,7 +1570,8 @@ quantize2(
     Pixel **palette,
     uint32_t *paletteLength,
     uint32_t **quantizedPixels,
-    int kmeans) {
+    int kmeans
+) {
     HashTable *h;
     uint32_t i;
     uint32_t mean[3];
@@ -1624,10 +1635,11 @@ quantize2(
     }
 
     if (!map_image_pixels(
-            pixelData, nPixels, p, nQuantPixels, avgDist, avgDistSortKey, qp)) {
+            pixelData, nPixels, p, nQuantPixels, avgDist, avgDistSortKey, qp
+        )) {
         goto error_4;
     }
-    if (kmeans) {
+    if (kmeans > 0) {
         k_means(pixelData, nPixels, p, nQuantPixels, qp, kmeans - 1);
     }
 
@@ -1697,7 +1709,7 @@ ImagingQuantize(Imaging im, int colors, int mode, int kmeans) {
        image data? */
 
     if (!strcmp(im->mode, "L")) {
-        /* greyscale */
+        /* grayscale */
 
         /* FIXME: converting a "L" image to "P" with 256 colors
            should be done by a simple copy... */
@@ -1767,7 +1779,8 @@ ImagingQuantize(Imaging im, int colors, int mode, int kmeans) {
                 &palette,
                 &paletteLength,
                 &newData,
-                kmeans);
+                kmeans
+            );
             break;
         case 1:
             /* maximum coverage */
@@ -1778,7 +1791,8 @@ ImagingQuantize(Imaging im, int colors, int mode, int kmeans) {
                 &palette,
                 &paletteLength,
                 &newData,
-                kmeans);
+                kmeans
+            );
             break;
         case 2:
             result = quantize_octree(
@@ -1788,7 +1802,8 @@ ImagingQuantize(Imaging im, int colors, int mode, int kmeans) {
                 &palette,
                 &paletteLength,
                 &newData,
-                withAlpha);
+                withAlpha
+            );
             break;
         case 3:
 #ifdef HAVE_LIBIMAGEQUANT
@@ -1800,7 +1815,8 @@ ImagingQuantize(Imaging im, int colors, int mode, int kmeans) {
                 &palette,
                 &paletteLength,
                 &newData,
-                withAlpha);
+                withAlpha
+            );
 #else
             result = -1;
 #endif
@@ -1825,6 +1841,7 @@ ImagingQuantize(Imaging im, int colors, int mode, int kmeans) {
 
         free(newData);
 
+        imOut->palette->size = (int)paletteLength;
         pp = imOut->palette->palette;
 
         for (i = j = 0; i < (int)paletteLength; i++) {
@@ -1832,16 +1849,9 @@ ImagingQuantize(Imaging im, int colors, int mode, int kmeans) {
             *pp++ = palette[i].c.g;
             *pp++ = palette[i].c.b;
             if (withAlpha) {
-                *pp++ = palette[i].c.a;
-            } else {
-                *pp++ = 255;
+                *pp = palette[i].c.a;
             }
-        }
-        for (; i < 256; i++) {
-            *pp++ = 0;
-            *pp++ = 0;
-            *pp++ = 0;
-            *pp++ = 255;
+            pp++;
         }
 
         if (withAlpha) {
@@ -1857,7 +1867,8 @@ ImagingQuantize(Imaging im, int colors, int mode, int kmeans) {
         if (result == -1) {
             return (Imaging)ImagingError_ValueError(
                 "dependency required by this method was not "
-                "enabled at compile time");
+                "enabled at compile time"
+            );
         }
 
         return (Imaging)ImagingError_ValueError("quantization error");
diff --git a/src/libImaging/QuantHash.c b/src/libImaging/QuantHash.c
index ea75d6037..bf2f29fde 100644
--- a/src/libImaging/QuantHash.c
+++ b/src/libImaging/QuantHash.c
@@ -132,7 +132,8 @@ _hashtable_resize(HashTable *h) {
 
 static int
 _hashtable_insert_node(
-    HashTable *h, HashNode *node, int resize, int update, CollisionFunc cf) {
+    HashTable *h, HashNode *node, int resize, int update, CollisionFunc cf
+) {
     uint32_t hash = h->hashFunc(h, node->key) % h->length;
     HashNode **n, *nv;
     int i;
@@ -207,7 +208,8 @@ _hashtable_insert(HashTable *h, HashKey_t key, HashVal_t val, int resize, int up
 
 int
 hashtable_insert_or_update_computed(
-    HashTable *h, HashKey_t key, ComputeFunc newFunc, ComputeFunc existsFunc) {
+    HashTable *h, HashKey_t key, ComputeFunc newFunc, ComputeFunc existsFunc
+) {
     HashNode **n, *nv;
     HashNode *t;
     int i;
diff --git a/src/libImaging/QuantHash.h b/src/libImaging/QuantHash.h
index fc1a99003..0462cfd49 100644
--- a/src/libImaging/QuantHash.h
+++ b/src/libImaging/QuantHash.h
@@ -20,13 +20,12 @@ typedef uint32_t HashVal_t;
 
 typedef uint32_t (*HashFunc)(const HashTable *, const HashKey_t);
 typedef int (*HashCmpFunc)(const HashTable *, const HashKey_t, const HashKey_t);
-typedef void (*IteratorFunc)(
-    const HashTable *, const HashKey_t, const HashVal_t, void *);
-typedef void (*IteratorUpdateFunc)(
-    const HashTable *, const HashKey_t, HashVal_t *, void *);
+typedef void (*IteratorFunc)(const HashTable *, const HashKey_t, const HashVal_t, void *);
+typedef void (*IteratorUpdateFunc)(const HashTable *, const HashKey_t, HashVal_t *, void *);
 typedef void (*ComputeFunc)(const HashTable *, const HashKey_t, HashVal_t *);
 typedef void (*CollisionFunc)(
-    const HashTable *, HashKey_t *, HashVal_t *, HashKey_t, HashVal_t);
+    const HashTable *, HashKey_t *, HashVal_t *, HashKey_t, HashVal_t
+);
 
 HashTable *
 hashtable_new(HashFunc hf, HashCmpFunc cf);
@@ -42,7 +41,8 @@ int
 hashtable_lookup(const HashTable *h, const HashKey_t key, HashVal_t *valp);
 int
 hashtable_insert_or_update_computed(
-    HashTable *h, HashKey_t key, ComputeFunc newFunc, ComputeFunc existsFunc);
+    HashTable *h, HashKey_t key, ComputeFunc newFunc, ComputeFunc existsFunc
+);
 void *
 hashtable_set_user_data(HashTable *h, void *data);
 void *
diff --git a/src/libImaging/QuantOctree.c b/src/libImaging/QuantOctree.c
index 5e79bce35..ec60b214e 100644
--- a/src/libImaging/QuantOctree.c
+++ b/src/libImaging/QuantOctree.c
@@ -38,7 +38,7 @@ typedef struct _ColorBucket {
     uint64_t g;
     uint64_t b;
     uint64_t a;
-} * ColorBucket;
+} *ColorBucket;
 
 typedef struct _ColorCube {
     unsigned int rBits, gBits, bBits, aBits;
@@ -47,7 +47,7 @@ typedef struct _ColorCube {
 
     unsigned long size;
     ColorBucket buckets;
-} * ColorCube;
+} *ColorCube;
 
 #define MAX(a, b) (a) > (b) ? (a) : (b)
 
@@ -107,11 +107,8 @@ free_color_cube(ColorCube cube) {
 
 static long
 color_bucket_offset_pos(
-    const ColorCube cube,
-    unsigned int r,
-    unsigned int g,
-    unsigned int b,
-    unsigned int a) {
+    const ColorCube cube, unsigned int r, unsigned int g, unsigned int b, unsigned int a
+) {
     return r << cube->rOffset | g << cube->gOffset | b << cube->bOffset |
            a << cube->aOffset;
 }
@@ -191,7 +188,8 @@ create_sorted_color_palette(const ColorCube cube) {
         buckets,
         cube->size,
         sizeof(struct _ColorBucket),
-        (int (*)(void const *, void const *)) & compare_bucket_count);
+        (int (*)(void const *, void const *))&compare_bucket_count
+    );
 
     return buckets;
 }
@@ -212,7 +210,8 @@ copy_color_cube(
     unsigned int rBits,
     unsigned int gBits,
     unsigned int bBits,
-    unsigned int aBits) {
+    unsigned int aBits
+) {
     unsigned int r, g, b, a;
     long src_pos, dst_pos;
     unsigned int src_reduce[4] = {0}, dst_reduce[4] = {0};
@@ -262,15 +261,18 @@ copy_color_cube(
                         r >> src_reduce[0],
                         g >> src_reduce[1],
                         b >> src_reduce[2],
-                        a >> src_reduce[3]);
+                        a >> src_reduce[3]
+                    );
                     dst_pos = color_bucket_offset_pos(
                         result,
                         r >> dst_reduce[0],
                         g >> dst_reduce[1],
                         b >> dst_reduce[2],
-                        a >> dst_reduce[3]);
+                        a >> dst_reduce[3]
+                    );
                     add_bucket_values(
-                        &cube->buckets[src_pos], &result->buckets[dst_pos]);
+                        &cube->buckets[src_pos], &result->buckets[dst_pos]
+                    );
                 }
             }
         }
@@ -328,7 +330,8 @@ combined_palette(
     ColorBucket bucketsA,
     unsigned long nBucketsA,
     ColorBucket bucketsB,
-    unsigned long nBucketsB) {
+    unsigned long nBucketsB
+) {
     ColorBucket result;
     if (nBucketsA > LONG_MAX - nBucketsB ||
         (nBucketsA + nBucketsB) > LONG_MAX / sizeof(struct _ColorBucket)) {
@@ -366,7 +369,8 @@ map_image_pixels(
     const Pixel *pixelData,
     uint32_t nPixels,
     const ColorCube lookupCube,
-    uint32_t *pixelArray) {
+    uint32_t *pixelArray
+) {
     long i;
     for (i = 0; i < nPixels; i++) {
         pixelArray[i] = lookup_color(lookupCube, &pixelData[i]);
@@ -384,7 +388,8 @@ quantize_octree(
     Pixel **palette,
     uint32_t *paletteLength,
     uint32_t **quantizedPixels,
-    int withAlpha) {
+    int withAlpha
+) {
     ColorCube fineCube = NULL;
     ColorCube coarseCube = NULL;
     ColorCube lookupCube = NULL;
@@ -461,7 +466,8 @@ quantize_octree(
         subtract_color_buckets(
             coarseCube,
             &paletteBucketsFine[nAlreadySubtracted],
-            nFineColors - nAlreadySubtracted);
+            nFineColors - nAlreadySubtracted
+        );
     }
 
     /* create our palette buckets with fine and coarse combined */
@@ -470,7 +476,8 @@ quantize_octree(
         goto error;
     }
     paletteBuckets = combined_palette(
-        paletteBucketsCoarse, nCoarseColors, paletteBucketsFine, nFineColors);
+        paletteBucketsCoarse, nCoarseColors, paletteBucketsFine, nFineColors
+    );
 
     free(paletteBucketsFine);
     paletteBucketsFine = NULL;
@@ -491,7 +498,8 @@ quantize_octree(
     /* expand coarse cube (64) to larger fine cube (4k). the value of each
        coarse bucket is then present in the according 64 fine buckets. */
     lookupCube = copy_color_cube(
-        coarseLookupCube, cubeBits[0], cubeBits[1], cubeBits[2], cubeBits[3]);
+        coarseLookupCube, cubeBits[0], cubeBits[1], cubeBits[2], cubeBits[3]
+    );
     if (!lookupCube) {
         goto error;
     }
diff --git a/src/libImaging/QuantPngQuant.c b/src/libImaging/QuantPngQuant.c
index 7a36300e4..a2258c3a2 100644
--- a/src/libImaging/QuantPngQuant.c
+++ b/src/libImaging/QuantPngQuant.c
@@ -26,7 +26,8 @@ quantize_pngquant(
     Pixel **palette,
     uint32_t *paletteLength,
     uint32_t **quantizedPixels,
-    int withAlpha) {
+    int withAlpha
+) {
     int result = 0;
     liq_image *image = NULL;
     liq_attr *attr = NULL;
diff --git a/src/libImaging/QuantPngQuant.h b/src/libImaging/QuantPngQuant.h
index d65e42590..ae96a52f3 100644
--- a/src/libImaging/QuantPngQuant.h
+++ b/src/libImaging/QuantPngQuant.h
@@ -12,6 +12,7 @@ quantize_pngquant(
     Pixel **,
     uint32_t *,
     uint32_t **,
-    int);
+    int
+);
 
 #endif
diff --git a/src/libImaging/RankFilter.c b/src/libImaging/RankFilter.c
index 73a6baecb..899b1fd3a 100644
--- a/src/libImaging/RankFilter.c
+++ b/src/libImaging/RankFilter.c
@@ -102,7 +102,8 @@ MakeRankFunction(UINT8) MakeRankFunction(INT32) MakeRankFunction(FLOAT32)
                     memcpy(                                                       \
                         buf + i * size,                                           \
                         &IMAGING_PIXEL_##type(im, x, y + i),                      \
-                        size * sizeof(type));                                     \
+                        size * sizeof(type)                                       \
+                    );                                                            \
                 }                                                                 \
                 IMAGING_PIXEL_##type(imOut, x, y) = Rank##type(buf, size2, rank); \
             }                                                                     \
diff --git a/src/libImaging/RawDecode.c b/src/libImaging/RawDecode.c
index 24abe4804..80ed0d688 100644
--- a/src/libImaging/RawDecode.c
+++ b/src/libImaging/RawDecode.c
@@ -74,7 +74,8 @@ ImagingRawDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t byt
         state->shuffle(
             (UINT8 *)im->image[state->y + state->yoff] + state->xoff * im->pixelsize,
             ptr,
-            state->xsize);
+            state->xsize
+        );
 
         ptr += state->bytes;
         bytes -= state->bytes;
diff --git a/src/libImaging/RawEncode.c b/src/libImaging/RawEncode.c
index 50de8d982..5e60e1106 100644
--- a/src/libImaging/RawEncode.c
+++ b/src/libImaging/RawEncode.c
@@ -65,7 +65,8 @@ ImagingRawEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
         state->shuffle(
             ptr,
             (UINT8 *)im->image[state->y + state->yoff] + state->xoff * im->pixelsize,
-            state->xsize);
+            state->xsize
+        );
 
         if (state->bytes > state->count) {
             /* zero-pad the buffer, if necessary */
diff --git a/src/libImaging/Reduce.c b/src/libImaging/Reduce.c
index 60928d2bc..022daa000 100644
--- a/src/libImaging/Reduce.c
+++ b/src/libImaging/Reduce.c
@@ -2,7 +2,7 @@
 
 #include <math.h>
 
-#define ROUND_UP(f) ((int)((f) >= 0.0 ? (f) + 0.5F : (f)-0.5F))
+#define ROUND_UP(f) ((int)((f) >= 0.0 ? (f) + 0.5F : (f) - 0.5F))
 
 UINT32
 division_UINT32(int divider, int result_bits) {
@@ -82,7 +82,8 @@ ImagingReduceNxN(Imaging imOut, Imaging imIn, int box[4], int xscale, int yscale
                         }
                     }
                     v = MAKE_UINT32(
-                        (ss0 * multiplier) >> 24, 0, 0, (ss3 * multiplier) >> 24);
+                        (ss0 * multiplier) >> 24, 0, 0, (ss3 * multiplier) >> 24
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else if (imIn->bands == 3) {
@@ -124,7 +125,8 @@ ImagingReduceNxN(Imaging imOut, Imaging imIn, int box[4], int xscale, int yscale
                         (ss0 * multiplier) >> 24,
                         (ss1 * multiplier) >> 24,
                         (ss2 * multiplier) >> 24,
-                        0);
+                        0
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else {  // bands == 4
@@ -171,7 +173,8 @@ ImagingReduceNxN(Imaging imOut, Imaging imIn, int box[4], int xscale, int yscale
                         (ss0 * multiplier) >> 24,
                         (ss1 * multiplier) >> 24,
                         (ss2 * multiplier) >> 24,
-                        (ss3 * multiplier) >> 24);
+                        (ss3 * multiplier) >> 24
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             }
@@ -226,7 +229,8 @@ ImagingReduce1xN(Imaging imOut, Imaging imIn, int box[4], int yscale) {
                         ss3 += line[xx * 4 + 3];
                     }
                     v = MAKE_UINT32(
-                        (ss0 * multiplier) >> 24, 0, 0, (ss3 * multiplier) >> 24);
+                        (ss0 * multiplier) >> 24, 0, 0, (ss3 * multiplier) >> 24
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else if (imIn->bands == 3) {
@@ -251,7 +255,8 @@ ImagingReduce1xN(Imaging imOut, Imaging imIn, int box[4], int yscale) {
                         (ss0 * multiplier) >> 24,
                         (ss1 * multiplier) >> 24,
                         (ss2 * multiplier) >> 24,
-                        0);
+                        0
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else {  // bands == 4
@@ -278,7 +283,8 @@ ImagingReduce1xN(Imaging imOut, Imaging imIn, int box[4], int yscale) {
                         (ss0 * multiplier) >> 24,
                         (ss1 * multiplier) >> 24,
                         (ss2 * multiplier) >> 24,
-                        (ss3 * multiplier) >> 24);
+                        (ss3 * multiplier) >> 24
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             }
@@ -329,7 +335,8 @@ ImagingReduceNx1(Imaging imOut, Imaging imIn, int box[4], int xscale) {
                         ss3 += line[xx * 4 + 3];
                     }
                     v = MAKE_UINT32(
-                        (ss0 * multiplier) >> 24, 0, 0, (ss3 * multiplier) >> 24);
+                        (ss0 * multiplier) >> 24, 0, 0, (ss3 * multiplier) >> 24
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else if (imIn->bands == 3) {
@@ -351,7 +358,8 @@ ImagingReduceNx1(Imaging imOut, Imaging imIn, int box[4], int xscale) {
                         (ss0 * multiplier) >> 24,
                         (ss1 * multiplier) >> 24,
                         (ss2 * multiplier) >> 24,
-                        0);
+                        0
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else {  // bands == 4
@@ -375,7 +383,8 @@ ImagingReduceNx1(Imaging imOut, Imaging imIn, int box[4], int xscale) {
                         (ss0 * multiplier) >> 24,
                         (ss1 * multiplier) >> 24,
                         (ss2 * multiplier) >> 24,
-                        (ss3 * multiplier) >> 24);
+                        (ss3 * multiplier) >> 24
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             }
@@ -425,7 +434,8 @@ ImagingReduce1x2(Imaging imOut, Imaging imIn, int box[4]) {
                     ss1 = line0[xx * 4 + 1] + line1[xx * 4 + 1];
                     ss2 = line0[xx * 4 + 2] + line1[xx * 4 + 2];
                     v = MAKE_UINT32(
-                        (ss0 + amend) >> 1, (ss1 + amend) >> 1, (ss2 + amend) >> 1, 0);
+                        (ss0 + amend) >> 1, (ss1 + amend) >> 1, (ss2 + amend) >> 1, 0
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else {  // bands == 4
@@ -440,7 +450,8 @@ ImagingReduce1x2(Imaging imOut, Imaging imIn, int box[4]) {
                         (ss0 + amend) >> 1,
                         (ss1 + amend) >> 1,
                         (ss2 + amend) >> 1,
-                        (ss3 + amend) >> 1);
+                        (ss3 + amend) >> 1
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             }
@@ -488,7 +499,8 @@ ImagingReduce2x1(Imaging imOut, Imaging imIn, int box[4]) {
                     ss1 = line0[xx * 4 + 1] + line0[xx * 4 + 5];
                     ss2 = line0[xx * 4 + 2] + line0[xx * 4 + 6];
                     v = MAKE_UINT32(
-                        (ss0 + amend) >> 1, (ss1 + amend) >> 1, (ss2 + amend) >> 1, 0);
+                        (ss0 + amend) >> 1, (ss1 + amend) >> 1, (ss2 + amend) >> 1, 0
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else {  // bands == 4
@@ -503,7 +515,8 @@ ImagingReduce2x1(Imaging imOut, Imaging imIn, int box[4]) {
                         (ss0 + amend) >> 1,
                         (ss1 + amend) >> 1,
                         (ss2 + amend) >> 1,
-                        (ss3 + amend) >> 1);
+                        (ss3 + amend) >> 1
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             }
@@ -558,7 +571,8 @@ ImagingReduce2x2(Imaging imOut, Imaging imIn, int box[4]) {
                     ss2 = line0[xx * 4 + 2] + line0[xx * 4 + 6] + line1[xx * 4 + 2] +
                           line1[xx * 4 + 6];
                     v = MAKE_UINT32(
-                        (ss0 + amend) >> 2, (ss1 + amend) >> 2, (ss2 + amend) >> 2, 0);
+                        (ss0 + amend) >> 2, (ss1 + amend) >> 2, (ss2 + amend) >> 2, 0
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else {  // bands == 4
@@ -577,7 +591,8 @@ ImagingReduce2x2(Imaging imOut, Imaging imIn, int box[4]) {
                         (ss0 + amend) >> 2,
                         (ss1 + amend) >> 2,
                         (ss2 + amend) >> 2,
-                        (ss3 + amend) >> 2);
+                        (ss3 + amend) >> 2
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             }
@@ -623,7 +638,8 @@ ImagingReduce1x3(Imaging imOut, Imaging imIn, int box[4]) {
                         ((ss0 + amend) * multiplier) >> 24,
                         0,
                         0,
-                        ((ss3 + amend) * multiplier) >> 24);
+                        ((ss3 + amend) * multiplier) >> 24
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else if (imIn->bands == 3) {
@@ -637,7 +653,8 @@ ImagingReduce1x3(Imaging imOut, Imaging imIn, int box[4]) {
                         ((ss0 + amend) * multiplier) >> 24,
                         ((ss1 + amend) * multiplier) >> 24,
                         ((ss2 + amend) * multiplier) >> 24,
-                        0);
+                        0
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else {  // bands == 4
@@ -652,7 +669,8 @@ ImagingReduce1x3(Imaging imOut, Imaging imIn, int box[4]) {
                         ((ss0 + amend) * multiplier) >> 24,
                         ((ss1 + amend) * multiplier) >> 24,
                         ((ss2 + amend) * multiplier) >> 24,
-                        ((ss3 + amend) * multiplier) >> 24);
+                        ((ss3 + amend) * multiplier) >> 24
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             }
@@ -694,7 +712,8 @@ ImagingReduce3x1(Imaging imOut, Imaging imIn, int box[4]) {
                         ((ss0 + amend) * multiplier) >> 24,
                         0,
                         0,
-                        ((ss3 + amend) * multiplier) >> 24);
+                        ((ss3 + amend) * multiplier) >> 24
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else if (imIn->bands == 3) {
@@ -708,7 +727,8 @@ ImagingReduce3x1(Imaging imOut, Imaging imIn, int box[4]) {
                         ((ss0 + amend) * multiplier) >> 24,
                         ((ss1 + amend) * multiplier) >> 24,
                         ((ss2 + amend) * multiplier) >> 24,
-                        0);
+                        0
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else {  // bands == 4
@@ -723,7 +743,8 @@ ImagingReduce3x1(Imaging imOut, Imaging imIn, int box[4]) {
                         ((ss0 + amend) * multiplier) >> 24,
                         ((ss1 + amend) * multiplier) >> 24,
                         ((ss2 + amend) * multiplier) >> 24,
-                        ((ss3 + amend) * multiplier) >> 24);
+                        ((ss3 + amend) * multiplier) >> 24
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             }
@@ -775,7 +796,8 @@ ImagingReduce3x3(Imaging imOut, Imaging imIn, int box[4]) {
                         ((ss0 + amend) * multiplier) >> 24,
                         0,
                         0,
-                        ((ss3 + amend) * multiplier) >> 24);
+                        ((ss3 + amend) * multiplier) >> 24
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else if (imIn->bands == 3) {
@@ -795,7 +817,8 @@ ImagingReduce3x3(Imaging imOut, Imaging imIn, int box[4]) {
                         ((ss0 + amend) * multiplier) >> 24,
                         ((ss1 + amend) * multiplier) >> 24,
                         ((ss2 + amend) * multiplier) >> 24,
-                        0);
+                        0
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else {  // bands == 4
@@ -818,7 +841,8 @@ ImagingReduce3x3(Imaging imOut, Imaging imIn, int box[4]) {
                         ((ss0 + amend) * multiplier) >> 24,
                         ((ss1 + amend) * multiplier) >> 24,
                         ((ss2 + amend) * multiplier) >> 24,
-                        ((ss3 + amend) * multiplier) >> 24);
+                        ((ss3 + amend) * multiplier) >> 24
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             }
@@ -900,7 +924,8 @@ ImagingReduce4x4(Imaging imOut, Imaging imIn, int box[4]) {
                           line3[xx * 4 + 2] + line3[xx * 4 + 6] + line3[xx * 4 + 10] +
                           line3[xx * 4 + 14];
                     v = MAKE_UINT32(
-                        (ss0 + amend) >> 4, (ss1 + amend) >> 4, (ss2 + amend) >> 4, 0);
+                        (ss0 + amend) >> 4, (ss1 + amend) >> 4, (ss2 + amend) >> 4, 0
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else {  // bands == 4
@@ -935,7 +960,8 @@ ImagingReduce4x4(Imaging imOut, Imaging imIn, int box[4]) {
                         (ss0 + amend) >> 4,
                         (ss1 + amend) >> 4,
                         (ss2 + amend) >> 4,
-                        (ss3 + amend) >> 4);
+                        (ss3 + amend) >> 4
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             }
@@ -1007,7 +1033,8 @@ ImagingReduce5x5(Imaging imOut, Imaging imIn, int box[4]) {
                         ((ss0 + amend) * multiplier) >> 24,
                         0,
                         0,
-                        ((ss3 + amend) * multiplier) >> 24);
+                        ((ss3 + amend) * multiplier) >> 24
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else if (imIn->bands == 3) {
@@ -1045,7 +1072,8 @@ ImagingReduce5x5(Imaging imOut, Imaging imIn, int box[4]) {
                         ((ss0 + amend) * multiplier) >> 24,
                         ((ss1 + amend) * multiplier) >> 24,
                         ((ss2 + amend) * multiplier) >> 24,
-                        0);
+                        0
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             } else {  // bands == 4
@@ -1092,7 +1120,8 @@ ImagingReduce5x5(Imaging imOut, Imaging imIn, int box[4]) {
                         ((ss0 + amend) * multiplier) >> 24,
                         ((ss1 + amend) * multiplier) >> 24,
                         ((ss2 + amend) * multiplier) >> 24,
-                        ((ss3 + amend) * multiplier) >> 24);
+                        ((ss3 + amend) * multiplier) >> 24
+                    );
                     memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
                 }
             }
@@ -1181,7 +1210,8 @@ ImagingReduceCorners(Imaging imOut, Imaging imIn, int box[4], int xscale, int ys
                     (ss0 * multiplier) >> 24,
                     (ss1 * multiplier) >> 24,
                     (ss2 * multiplier) >> 24,
-                    (ss3 * multiplier) >> 24);
+                    (ss3 * multiplier) >> 24
+                );
                 memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
             }
         }
@@ -1207,7 +1237,8 @@ ImagingReduceCorners(Imaging imOut, Imaging imIn, int box[4], int xscale, int ys
                     (ss0 * multiplier) >> 24,
                     (ss1 * multiplier) >> 24,
                     (ss2 * multiplier) >> 24,
-                    (ss3 * multiplier) >> 24);
+                    (ss3 * multiplier) >> 24
+                );
                 memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
             }
         }
@@ -1232,7 +1263,8 @@ ImagingReduceCorners(Imaging imOut, Imaging imIn, int box[4], int xscale, int ys
                 (ss0 * multiplier) >> 24,
                 (ss1 * multiplier) >> 24,
                 (ss2 * multiplier) >> 24,
-                (ss3 * multiplier) >> 24);
+                (ss3 * multiplier) >> 24
+            );
             memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
         }
     }
@@ -1240,7 +1272,8 @@ ImagingReduceCorners(Imaging imOut, Imaging imIn, int box[4], int xscale, int ys
 
 void
 ImagingReduceNxN_32bpc(
-    Imaging imOut, Imaging imIn, int box[4], int xscale, int yscale) {
+    Imaging imOut, Imaging imIn, int box[4], int xscale, int yscale
+) {
     /* The most general implementation for any xscale and yscale
      */
     int x, y, xx, yy;
@@ -1313,7 +1346,8 @@ ImagingReduceNxN_32bpc(
 
 void
 ImagingReduceCorners_32bpc(
-    Imaging imOut, Imaging imIn, int box[4], int xscale, int yscale) {
+    Imaging imOut, Imaging imIn, int box[4], int xscale, int yscale
+) {
     /* Fill the last row and the last column for any xscale and yscale.
      */
     int x, y, xx, yy;
@@ -1427,7 +1461,8 @@ ImagingReduce(Imaging imIn, int xscale, int yscale, int box[4]) {
     }
 
     imOut = ImagingNewDirty(
-        imIn->mode, (box[2] + xscale - 1) / xscale, (box[3] + yscale - 1) / yscale);
+        imIn->mode, (box[2] + xscale - 1) / xscale, (box[3] + yscale - 1) / yscale
+    );
     if (!imOut) {
         return NULL;
     }
diff --git a/src/libImaging/Resample.c b/src/libImaging/Resample.c
index cf79d8a4e..f5e386dc2 100644
--- a/src/libImaging/Resample.c
+++ b/src/libImaging/Resample.c
@@ -2,7 +2,7 @@
 
 #include <math.h>
 
-#define ROUND_UP(f) ((int)((f) >= 0.0 ? (f) + 0.5F : (f)-0.5F))
+#define ROUND_UP(f) ((int)((f) >= 0.0 ? (f) + 0.5F : (f) - 0.5F))
 
 struct filter {
     double (*filter)(double x);
@@ -186,7 +186,8 @@ precompute_coeffs(
     int outSize,
     struct filter *filterp,
     int **boundsp,
-    double **kkp) {
+    double **kkp
+) {
     double support, scale, filterscale;
     double center, ww, ss;
     int xx, x, ksize, xmin, xmax;
@@ -284,7 +285,8 @@ normalize_coeffs_8bpc(int outSize, int ksize, double *prekk) {
 
 void
 ImagingResampleHorizontal_8bpc(
-    Imaging imOut, Imaging imIn, int offset, int ksize, int *bounds, double *prekk) {
+    Imaging imOut, Imaging imIn, int offset, int ksize, int *bounds, double *prekk
+) {
     ImagingSectionCookie cookie;
     int ss0, ss1, ss2, ss3;
     int xx, yy, x, xmin, xmax;
@@ -376,7 +378,8 @@ ImagingResampleHorizontal_8bpc(
 
 void
 ImagingResampleVertical_8bpc(
-    Imaging imOut, Imaging imIn, int offset, int ksize, int *bounds, double *prekk) {
+    Imaging imOut, Imaging imIn, int offset, int ksize, int *bounds, double *prekk
+) {
     ImagingSectionCookie cookie;
     int ss0, ss1, ss2, ss3;
     int xx, yy, y, ymin, ymax;
@@ -457,9 +460,87 @@ ImagingResampleVertical_8bpc(
     ImagingSectionLeave(&cookie);
 }
 
+void
+ImagingResampleHorizontal_16bpc(
+    Imaging imOut, Imaging imIn, int offset, int ksize, int *bounds, double *kk
+) {
+    ImagingSectionCookie cookie;
+    double ss;
+    int xx, yy, x, xmin, xmax, ss_int;
+    double *k;
+
+    int bigendian = 0;
+    if (strcmp(imIn->mode, "I;16N") == 0
+#ifdef WORDS_BIGENDIAN
+        || strcmp(imIn->mode, "I;16B") == 0
+#endif
+    ) {
+        bigendian = 1;
+    }
+
+    ImagingSectionEnter(&cookie);
+    for (yy = 0; yy < imOut->ysize; yy++) {
+        for (xx = 0; xx < imOut->xsize; xx++) {
+            xmin = bounds[xx * 2 + 0];
+            xmax = bounds[xx * 2 + 1];
+            k = &kk[xx * ksize];
+            ss = 0.0;
+            for (x = 0; x < xmax; x++) {
+                ss += (imIn->image8[yy + offset][(x + xmin) * 2 + (bigendian ? 1 : 0)] +
+                       (imIn->image8[yy + offset][(x + xmin) * 2 + (bigendian ? 0 : 1)]
+                        << 8)) *
+                      k[x];
+            }
+            ss_int = ROUND_UP(ss);
+            imOut->image8[yy][xx * 2 + (bigendian ? 1 : 0)] = CLIP8(ss_int % 256);
+            imOut->image8[yy][xx * 2 + (bigendian ? 0 : 1)] = CLIP8(ss_int >> 8);
+        }
+    }
+    ImagingSectionLeave(&cookie);
+}
+
+void
+ImagingResampleVertical_16bpc(
+    Imaging imOut, Imaging imIn, int offset, int ksize, int *bounds, double *kk
+) {
+    ImagingSectionCookie cookie;
+    double ss;
+    int xx, yy, y, ymin, ymax, ss_int;
+    double *k;
+
+    int bigendian = 0;
+    if (strcmp(imIn->mode, "I;16N") == 0
+#ifdef WORDS_BIGENDIAN
+        || strcmp(imIn->mode, "I;16B") == 0
+#endif
+    ) {
+        bigendian = 1;
+    }
+
+    ImagingSectionEnter(&cookie);
+    for (yy = 0; yy < imOut->ysize; yy++) {
+        ymin = bounds[yy * 2 + 0];
+        ymax = bounds[yy * 2 + 1];
+        k = &kk[yy * ksize];
+        for (xx = 0; xx < imOut->xsize; xx++) {
+            ss = 0.0;
+            for (y = 0; y < ymax; y++) {
+                ss += (imIn->image8[y + ymin][xx * 2 + (bigendian ? 1 : 0)] +
+                       (imIn->image8[y + ymin][xx * 2 + (bigendian ? 0 : 1)] << 8)) *
+                      k[y];
+            }
+            ss_int = ROUND_UP(ss);
+            imOut->image8[yy][xx * 2 + (bigendian ? 1 : 0)] = CLIP8(ss_int % 256);
+            imOut->image8[yy][xx * 2 + (bigendian ? 0 : 1)] = CLIP8(ss_int >> 8);
+        }
+    }
+    ImagingSectionLeave(&cookie);
+}
+
 void
 ImagingResampleHorizontal_32bpc(
-    Imaging imOut, Imaging imIn, int offset, int ksize, int *bounds, double *kk) {
+    Imaging imOut, Imaging imIn, int offset, int ksize, int *bounds, double *kk
+) {
     ImagingSectionCookie cookie;
     double ss;
     int xx, yy, x, xmin, xmax;
@@ -502,7 +583,8 @@ ImagingResampleHorizontal_32bpc(
 
 void
 ImagingResampleVertical_32bpc(
-    Imaging imOut, Imaging imIn, int offset, int ksize, int *bounds, double *kk) {
+    Imaging imOut, Imaging imIn, int offset, int ksize, int *bounds, double *kk
+) {
     ImagingSectionCookie cookie;
     double ss;
     int xx, yy, y, ymin, ymax;
@@ -544,7 +626,8 @@ ImagingResampleVertical_32bpc(
 }
 
 typedef void (*ResampleFunction)(
-    Imaging imOut, Imaging imIn, int offset, int ksize, int *bounds, double *kk);
+    Imaging imOut, Imaging imIn, int offset, int ksize, int *bounds, double *kk
+);
 
 Imaging
 ImagingResampleInner(
@@ -554,7 +637,8 @@ ImagingResampleInner(
     struct filter *filterp,
     float box[4],
     ResampleFunction ResampleHorizontal,
-    ResampleFunction ResampleVertical);
+    ResampleFunction ResampleVertical
+);
 
 Imaging
 ImagingResample(Imaging imIn, int xsize, int ysize, int filter, float box[4]) {
@@ -567,7 +651,12 @@ ImagingResample(Imaging imIn, int xsize, int ysize, int filter, float box[4]) {
     }
 
     if (imIn->type == IMAGING_TYPE_SPECIAL) {
-        return (Imaging)ImagingError_ModeError();
+        if (strncmp(imIn->mode, "I;16", 4) == 0) {
+            ResampleHorizontal = ImagingResampleHorizontal_16bpc;
+            ResampleVertical = ImagingResampleVertical_16bpc;
+        } else {
+            return (Imaging)ImagingError_ModeError();
+        }
     } else if (imIn->image8) {
         ResampleHorizontal = ImagingResampleHorizontal_8bpc;
         ResampleVertical = ImagingResampleVertical_8bpc;
@@ -609,7 +698,8 @@ ImagingResample(Imaging imIn, int xsize, int ysize, int filter, float box[4]) {
     }
 
     return ImagingResampleInner(
-        imIn, xsize, ysize, filterp, box, ResampleHorizontal, ResampleVertical);
+        imIn, xsize, ysize, filterp, box, ResampleHorizontal, ResampleVertical
+    );
 }
 
 Imaging
@@ -620,7 +710,8 @@ ImagingResampleInner(
     struct filter *filterp,
     float box[4],
     ResampleFunction ResampleHorizontal,
-    ResampleFunction ResampleVertical) {
+    ResampleFunction ResampleVertical
+) {
     Imaging imTemp = NULL;
     Imaging imOut = NULL;
 
@@ -634,13 +725,15 @@ ImagingResampleInner(
     need_vertical = ysize != imIn->ysize || box[1] || box[3] != ysize;
 
     ksize_horiz = precompute_coeffs(
-        imIn->xsize, box[0], box[2], xsize, filterp, &bounds_horiz, &kk_horiz);
+        imIn->xsize, box[0], box[2], xsize, filterp, &bounds_horiz, &kk_horiz
+    );
     if (!ksize_horiz) {
         return NULL;
     }
 
     ksize_vert = precompute_coeffs(
-        imIn->ysize, box[1], box[3], ysize, filterp, &bounds_vert, &kk_vert);
+        imIn->ysize, box[1], box[3], ysize, filterp, &bounds_vert, &kk_vert
+    );
     if (!ksize_vert) {
         free(bounds_horiz);
         free(kk_horiz);
@@ -662,7 +755,8 @@ ImagingResampleInner(
         imTemp = ImagingNewDirty(imIn->mode, xsize, ybox_last - ybox_first);
         if (imTemp) {
             ResampleHorizontal(
-                imTemp, imIn, ybox_first, ksize_horiz, bounds_horiz, kk_horiz);
+                imTemp, imIn, ybox_first, ksize_horiz, bounds_horiz, kk_horiz
+            );
         }
         free(bounds_horiz);
         free(kk_horiz);
diff --git a/src/libImaging/Sgi.h b/src/libImaging/Sgi.h
index 39dd68825..797e5cbf9 100644
--- a/src/libImaging/Sgi.h
+++ b/src/libImaging/Sgi.h
@@ -36,4 +36,4 @@ typedef struct {
     /* image data size from file descriptor */
     long bufsize;
 
-} SGISTATE;
\ No newline at end of file
+} SGISTATE;
diff --git a/src/libImaging/SgiRleDecode.c b/src/libImaging/SgiRleDecode.c
index 4eef44ba5..e60468990 100644
--- a/src/libImaging/SgiRleDecode.c
+++ b/src/libImaging/SgiRleDecode.c
@@ -113,7 +113,9 @@ expandrow(UINT8 *dest, UINT8 *src, int n, int z, int xsize, UINT8 *end_of_buffer
 }
 
 static int
-expandrow2(UINT8 *dest, const UINT8 *src, int n, int z, int xsize, UINT8 *end_of_buffer) {
+expandrow2(
+    UINT8 *dest, const UINT8 *src, int n, int z, int xsize, UINT8 *end_of_buffer
+) {
     UINT8 pixel, count;
     int x = 0;
 
@@ -181,7 +183,7 @@ ImagingSgiRleDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t
        each with 4 bytes per element of tablen
        Check here before we allocate any memory
     */
-    if (c->bufsize < 8 * c->tablen) {
+    if (c->bufsize < 8 * (int64_t)c->tablen) {
         state->errcode = IMAGING_CODEC_OVERRUN;
         return -1;
     }
@@ -193,11 +195,11 @@ ImagingSgiRleDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t
     }
     _imaging_seek_pyFd(state->fd, SGI_HEADER_SIZE, SEEK_SET);
     if (_imaging_read_pyFd(state->fd, (char *)ptr, c->bufsize) != c->bufsize) {
+        free(ptr);
         state->errcode = IMAGING_CODEC_UNKNOWN;
         return -1;
     }
 
-
     /* decoder initialization */
     state->count = 0;
     state->y = 0;
@@ -252,7 +254,8 @@ ImagingSgiRleDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t
                     c->rlelength,
                     im->bands,
                     im->xsize,
-                    &ptr[c->bufsize-1]);
+                    &ptr[c->bufsize - 1]
+                );
             } else {
                 status = expandrow2(
                     &state->buffer[c->channo * 2],
@@ -260,7 +263,8 @@ ImagingSgiRleDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t
                     c->rlelength,
                     im->bands,
                     im->xsize,
-                    &ptr[c->bufsize-1]);
+                    &ptr[c->bufsize - 1]
+                );
             }
             if (status == -1) {
                 state->errcode = IMAGING_CODEC_OVERRUN;
@@ -268,7 +272,6 @@ ImagingSgiRleDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t
             } else if (status == 1) {
                 goto sgi_finish_decode;
             }
-
         }
 
         /* store decompressed data in image */
diff --git a/src/libImaging/Storage.c b/src/libImaging/Storage.c
index 128595f65..522e9f375 100644
--- a/src/libImaging/Storage.c
+++ b/src/libImaging/Storage.c
@@ -80,18 +80,18 @@ ImagingNewPrologueSubtype(const char *mode, int xsize, int ysize, int size) {
         im->palette = ImagingPaletteNew("RGB");
 
     } else if (strcmp(mode, "L") == 0) {
-        /* 8-bit greyscale (luminance) images */
+        /* 8-bit grayscale (luminance) images */
         im->bands = im->pixelsize = 1;
         im->linesize = xsize;
 
     } else if (strcmp(mode, "LA") == 0) {
-        /* 8-bit greyscale (luminance) with alpha */
+        /* 8-bit grayscale (luminance) with alpha */
         im->bands = 2;
         im->pixelsize = 4; /* store in image32 memory */
         im->linesize = xsize * 4;
 
     } else if (strcmp(mode, "La") == 0) {
-        /* 8-bit greyscale (luminance) with premultiplied alpha */
+        /* 8-bit grayscale (luminance) with premultiplied alpha */
         im->bands = 2;
         im->pixelsize = 4; /* store in image32 memory */
         im->linesize = xsize * 4;
@@ -110,9 +110,8 @@ ImagingNewPrologueSubtype(const char *mode, int xsize, int ysize, int size) {
         im->linesize = xsize * 4;
         im->type = IMAGING_TYPE_INT32;
 
-    } else if (
-        strcmp(mode, "I;16") == 0 || strcmp(mode, "I;16L") == 0 ||
-        strcmp(mode, "I;16B") == 0 || strcmp(mode, "I;16N") == 0) {
+    } else if (strcmp(mode, "I;16") == 0 || strcmp(mode, "I;16L") == 0 ||
+               strcmp(mode, "I;16B") == 0 || strcmp(mode, "I;16N") == 0) {
         /* EXPERIMENTAL */
         /* 16-bit raw integer images */
         im->bands = 1;
@@ -219,7 +218,9 @@ ImagingNewPrologueSubtype(const char *mode, int xsize, int ysize, int size) {
             break;
     }
 
+    MUTEX_LOCK(&ImagingDefaultArena.mutex);
     ImagingDefaultArena.stats_new_count += 1;
+    MUTEX_UNLOCK(&ImagingDefaultArena.mutex);
 
     return im;
 }
@@ -227,7 +228,8 @@ ImagingNewPrologueSubtype(const char *mode, int xsize, int ysize, int size) {
 Imaging
 ImagingNewPrologue(const char *mode, int xsize, int ysize) {
     return ImagingNewPrologueSubtype(
-        mode, xsize, ysize, sizeof(struct ImagingMemoryInstance));
+        mode, xsize, ysize, sizeof(struct ImagingMemoryInstance)
+    );
 }
 
 void
@@ -267,7 +269,10 @@ struct ImagingMemoryArena ImagingDefaultArena = {
     0,
     0,
     0,
-    0  // Stats
+    0,  // Stats
+#ifdef Py_GIL_DISABLED
+    {0},
+#endif
 };
 
 int
@@ -364,18 +369,19 @@ ImagingDestroyArray(Imaging im) {
     int y = 0;
 
     if (im->blocks) {
+        MUTEX_LOCK(&ImagingDefaultArena.mutex);
         while (im->blocks[y].ptr) {
             memory_return_block(&ImagingDefaultArena, im->blocks[y]);
             y += 1;
         }
+        MUTEX_UNLOCK(&ImagingDefaultArena.mutex);
         free(im->blocks);
     }
 }
 
 Imaging
-ImagingAllocateArray(Imaging im, int dirty, int block_size) {
+ImagingAllocateArray(Imaging im, ImagingMemoryArena arena, int dirty, int block_size) {
     int y, line_in_block, current_block;
-    ImagingMemoryArena arena = &ImagingDefaultArena;
     ImagingMemoryBlock block = {NULL, 0};
     int aligned_linesize, lines_per_block, blocks_count;
     char *aligned_ptr = NULL;
@@ -418,9 +424,8 @@ ImagingAllocateArray(Imaging im, int dirty, int block_size) {
             }
             im->blocks[current_block] = block;
             /* Bulletproof code from libc _int_memalign */
-            aligned_ptr = (char *)(
-                ((size_t) (block.ptr + arena->alignment - 1)) &
-                -((Py_ssize_t) arena->alignment));
+            aligned_ptr = (char *)(((size_t)(block.ptr + arena->alignment - 1)) &
+                                   -((Py_ssize_t)arena->alignment));
         }
 
         im->image[y] = aligned_ptr + aligned_linesize * line_in_block;
@@ -499,14 +504,22 @@ ImagingNewInternal(const char *mode, int xsize, int ysize, int dirty) {
         return NULL;
     }
 
-    if (ImagingAllocateArray(im, dirty, ImagingDefaultArena.block_size)) {
+    MUTEX_LOCK(&ImagingDefaultArena.mutex);
+    Imaging tmp = ImagingAllocateArray(
+        im, &ImagingDefaultArena, dirty, ImagingDefaultArena.block_size
+    );
+    MUTEX_UNLOCK(&ImagingDefaultArena.mutex);
+    if (tmp) {
         return im;
     }
 
     ImagingError_Clear();
 
     // Try to allocate the image once more with smallest possible block size
-    if (ImagingAllocateArray(im, dirty, IMAGING_PAGE_SIZE)) {
+    MUTEX_LOCK(&ImagingDefaultArena.mutex);
+    tmp = ImagingAllocateArray(im, &ImagingDefaultArena, dirty, IMAGING_PAGE_SIZE);
+    MUTEX_UNLOCK(&ImagingDefaultArena.mutex);
+    if (tmp) {
         return im;
     }
 
diff --git a/src/libImaging/SunRleDecode.c b/src/libImaging/SunRleDecode.c
index 9d8e1292a..d3231ad90 100644
--- a/src/libImaging/SunRleDecode.c
+++ b/src/libImaging/SunRleDecode.c
@@ -107,7 +107,8 @@ ImagingSunRleDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t
                     (UINT8 *)im->image[state->y + state->yoff] +
                         state->xoff * im->pixelsize,
                     state->buffer,
-                    state->xsize);
+                    state->xsize
+                );
 
                 state->x = 0;
 
diff --git a/src/libImaging/TgaRleDecode.c b/src/libImaging/TgaRleDecode.c
index 95ae9b622..fbf29452c 100644
--- a/src/libImaging/TgaRleDecode.c
+++ b/src/libImaging/TgaRleDecode.c
@@ -93,7 +93,8 @@ ImagingTgaRleDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t
                     (UINT8 *)im->image[state->y + state->yoff] +
                         state->xoff * im->pixelsize,
                     state->buffer,
-                    state->xsize);
+                    state->xsize
+                );
 
                 state->x = 0;
 
diff --git a/src/libImaging/TgaRleEncode.c b/src/libImaging/TgaRleEncode.c
index aa7e7b96d..dde476614 100644
--- a/src/libImaging/TgaRleEncode.c
+++ b/src/libImaging/TgaRleEncode.c
@@ -63,7 +63,8 @@ ImagingTgaRleEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes)
                     state->buffer,
                     (UINT8 *)im->image[state->y + state->yoff] +
                         state->xoff * im->pixelsize,
-                    state->xsize);
+                    state->xsize
+                );
             }
 
             row = state->buffer;
@@ -146,7 +147,8 @@ ImagingTgaRleEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes)
         }
 
         memcpy(
-            dst, state->buffer + (state->x * bytesPerPixel - state->count), flushCount);
+            dst, state->buffer + (state->x * bytesPerPixel - state->count), flushCount
+        );
         dst += flushCount;
         bytes -= flushCount;
 
diff --git a/src/libImaging/TiffDecode.c b/src/libImaging/TiffDecode.c
index 428cd93d2..e4da9162d 100644
--- a/src/libImaging/TiffDecode.c
+++ b/src/libImaging/TiffDecode.c
@@ -14,6 +14,10 @@
 
 #ifdef HAVE_LIBTIFF
 
+#ifdef HAVE_UNISTD_H
+#include <unistd.h> /* lseek */
+#endif
+
 #ifndef uint
 #define uint uint32
 #endif
@@ -40,7 +44,8 @@ dump_state(const TIFFSTATE *state) {
          (int)state->size,
          (uint)state->eof,
          state->data,
-         state->ifd));
+         state->ifd)
+    );
 }
 
 /*
@@ -56,7 +61,12 @@ _tiffReadProc(thandle_t hdata, tdata_t buf, tsize_t size) {
     dump_state(state);
 
     if (state->loc > state->eof) {
-        TIFFError("_tiffReadProc", "Invalid Read at loc %" PRIu64 ", eof: %" PRIu64, state->loc, state->eof);
+        TIFFError(
+            "_tiffReadProc",
+            "Invalid Read at loc %" PRIu64 ", eof: %" PRIu64,
+            state->loc,
+            state->eof
+        );
         return 0;
     }
     to_read = min(size, min(state->size, (tsize_t)state->eof) - (tsize_t)state->loc);
@@ -192,13 +202,15 @@ ImagingLibTiffInit(ImagingCodecState state, int fp, uint32_t offset) {
          state->state,
          state->x,
          state->y,
-         state->ystep));
+         state->ystep)
+    );
     TRACE(
         ("State: xsize %d, ysize %d, xoff %d, yoff %d \n",
          state->xsize,
          state->ysize,
          state->xoff,
-         state->yoff));
+         state->yoff)
+    );
     TRACE(("State: bits %d, bytes %d \n", state->bits, state->bytes));
     TRACE(("State: context %p \n", state->context));
 
@@ -213,7 +225,13 @@ ImagingLibTiffInit(ImagingCodecState state, int fp, uint32_t offset) {
 }
 
 int
-_pickUnpackers(Imaging im, ImagingCodecState state, TIFF *tiff, uint16_t planarconfig, ImagingShuffler *unpackers) {
+_pickUnpackers(
+    Imaging im,
+    ImagingCodecState state,
+    TIFF *tiff,
+    uint16_t planarconfig,
+    ImagingShuffler *unpackers
+) {
     // if number of bands is 1, there is no difference with contig case
     if (planarconfig == PLANARCONFIG_SEPARATE && im->bands > 1) {
         uint16_t bits_per_sample = 8;
@@ -228,10 +246,14 @@ _pickUnpackers(Imaging im, ImagingCodecState state, TIFF *tiff, uint16_t planarc
         // We'll pick appropriate set of unpackers depending on planar_configuration
         // It does not matter if data is RGB(A), CMYK or LUV really,
         // we just copy it plane by plane
-        unpackers[0] = ImagingFindUnpacker("RGBA", bits_per_sample == 16 ? "R;16N" : "R", NULL);
-        unpackers[1] = ImagingFindUnpacker("RGBA", bits_per_sample == 16 ? "G;16N" : "G", NULL);
-        unpackers[2] = ImagingFindUnpacker("RGBA", bits_per_sample == 16 ? "B;16N" : "B", NULL);
-        unpackers[3] = ImagingFindUnpacker("RGBA", bits_per_sample == 16 ? "A;16N" : "A", NULL);
+        unpackers[0] =
+            ImagingFindUnpacker("RGBA", bits_per_sample == 16 ? "R;16N" : "R", NULL);
+        unpackers[1] =
+            ImagingFindUnpacker("RGBA", bits_per_sample == 16 ? "G;16N" : "G", NULL);
+        unpackers[2] =
+            ImagingFindUnpacker("RGBA", bits_per_sample == 16 ? "B;16N" : "B", NULL);
+        unpackers[3] =
+            ImagingFindUnpacker("RGBA", bits_per_sample == 16 ? "A;16N" : "A", NULL);
 
         return im->bands;
     } else {
@@ -243,10 +265,10 @@ _pickUnpackers(Imaging im, ImagingCodecState state, TIFF *tiff, uint16_t planarc
 
 int
 _decodeAsRGBA(Imaging im, ImagingCodecState state, TIFF *tiff) {
-    // To avoid dealing with YCbCr subsampling and other complications, let libtiff handle it
-    // Use a TIFFRGBAImage wrapping the tiff image, and let libtiff handle
-    // all of the conversion. Metadata read from the TIFFRGBAImage could
-    // be different from the metadata that the base tiff returns.
+    // To avoid dealing with YCbCr subsampling and other complications, let libtiff
+    // handle it Use a TIFFRGBAImage wrapping the tiff image, and let libtiff handle all
+    // of the conversion. Metadata read from the TIFFRGBAImage could be different from
+    // the metadata that the base tiff returns.
 
     INT32 current_row;
     UINT8 *new_data;
@@ -255,17 +277,16 @@ _decodeAsRGBA(Imaging im, ImagingCodecState state, TIFF *tiff) {
     TIFFRGBAImage img;
     char emsg[1024] = "";
 
-    // Since using TIFFRGBAImage* functions, we can read whole tiff into rastrr in one call
-    // Let's select smaller block size. Multiplying image width by (tile length OR rows per strip)
-    // gives us manageable block size in pixels
+    // Since using TIFFRGBAImage* functions, we can read whole tiff into rastrr in one
+    // call Let's select smaller block size. Multiplying image width by (tile length OR
+    // rows per strip) gives us manageable block size in pixels
     if (TIFFIsTiled(tiff)) {
         ret = TIFFGetFieldDefaulted(tiff, TIFFTAG_TILELENGTH, &rows_per_block);
-    }
-    else {
+    } else {
         ret = TIFFGetFieldDefaulted(tiff, TIFFTAG_ROWSPERSTRIP, &rows_per_block);
     }
 
-    if (ret != 1 || rows_per_block==(UINT32)(-1)) {
+    if (ret != 1 || rows_per_block == (UINT32)(-1)) {
         rows_per_block = state->ysize;
     }
 
@@ -340,7 +361,8 @@ _decodeAsRGBA(Imaging im, ImagingCodecState state, TIFF *tiff) {
                 (UINT8 *)im->image[state->y + state->yoff + current_row] +
                     state->xoff * im->pixelsize,
                 state->buffer + current_row * row_byte_size,
-                state->xsize);
+                state->xsize
+            );
         }
     }
 
@@ -353,7 +375,13 @@ decodergba_err:
 }
 
 int
-_decodeTile(Imaging im, ImagingCodecState state, TIFF *tiff, int planes, ImagingShuffler *unpackers) {
+_decodeTile(
+    Imaging im,
+    ImagingCodecState state,
+    TIFF *tiff,
+    int planes,
+    ImagingShuffler *unpackers
+) {
     INT32 x, y, tile_y, current_tile_length, current_tile_width;
     UINT32 tile_width, tile_length;
     tsize_t tile_bytes_size, row_byte_size;
@@ -392,8 +420,8 @@ _decodeTile(Imaging im, ImagingCodecState state, TIFF *tiff, int planes, Imaging
 
     if (tile_bytes_size > ((tile_length * state->bits / planes + 7) / 8) * tile_width) {
         // If the tile size as expected by LibTiff isn't what we're expecting, abort.
-        // man:   TIFFTileSize returns the equivalent size for a tile of data as it would be returned in a
-        //        call to TIFFReadTile ...
+        // man:   TIFFTileSize returns the equivalent size for a tile of data as it
+        // would be returned in a call to TIFFReadTile ...
         state->errcode = IMAGING_CODEC_BROKEN;
         return -1;
     }
@@ -424,19 +452,26 @@ _decodeTile(Imaging im, ImagingCodecState state, TIFF *tiff, int planes, Imaging
 
                 TRACE(("Read tile at %dx%d; \n\n", x, y));
 
-                current_tile_width = min((INT32) tile_width, state->xsize - x);
-                current_tile_length =  min((INT32) tile_length, state->ysize - y);
+                current_tile_width = min((INT32)tile_width, state->xsize - x);
+                current_tile_length = min((INT32)tile_length, state->ysize - y);
                 // iterate over each line in the tile and stuff data into image
                 for (tile_y = 0; tile_y < current_tile_length; tile_y++) {
-                    TRACE(("Writing tile data at %dx%d using tile_width: %d; \n", tile_y + y, x, current_tile_width));
+                    TRACE(
+                        ("Writing tile data at %dx%d using tile_width: %d; \n",
+                         tile_y + y,
+                         x,
+                         current_tile_width)
+                    );
 
                     // UINT8 * bbb = state->buffer + tile_y * row_byte_size;
-                    // TRACE(("chars: %x%x%x%x\n", ((UINT8 *)bbb)[0], ((UINT8 *)bbb)[1], ((UINT8 *)bbb)[2], ((UINT8 *)bbb)[3]));
+                    // TRACE(("chars: %x%x%x%x\n", ((UINT8 *)bbb)[0], ((UINT8 *)bbb)[1],
+                    // ((UINT8 *)bbb)[2], ((UINT8 *)bbb)[3]));
 
-                    shuffler((UINT8*) im->image[tile_y + y] + x * im->pixelsize,
-                             state->buffer + tile_y * row_byte_size,
-                             current_tile_width
-                             );
+                    shuffler(
+                        (UINT8 *)im->image[tile_y + y] + x * im->pixelsize,
+                        state->buffer + tile_y * row_byte_size,
+                        current_tile_width
+                    );
                 }
             }
         }
@@ -446,7 +481,13 @@ _decodeTile(Imaging im, ImagingCodecState state, TIFF *tiff, int planes, Imaging
 }
 
 int
-_decodeStrip(Imaging im, ImagingCodecState state, TIFF *tiff, int planes, ImagingShuffler *unpackers) {
+_decodeStrip(
+    Imaging im,
+    ImagingCodecState state,
+    TIFF *tiff,
+    int planes,
+    ImagingShuffler *unpackers
+) {
     INT32 strip_row = 0;
     UINT8 *new_data;
     UINT32 rows_per_strip;
@@ -454,7 +495,7 @@ _decodeStrip(Imaging im, ImagingCodecState state, TIFF *tiff, int planes, Imagin
     tsize_t strip_size, row_byte_size, unpacker_row_byte_size;
 
     ret = TIFFGetField(tiff, TIFFTAG_ROWSPERSTRIP, &rows_per_strip);
-    if (ret != 1 || rows_per_strip==(UINT32)(-1)) {
+    if (ret != 1 || rows_per_strip == (UINT32)(-1)) {
         rows_per_strip = state->ysize;
     }
 
@@ -474,8 +515,8 @@ _decodeStrip(Imaging im, ImagingCodecState state, TIFF *tiff, int planes, Imagin
     unpacker_row_byte_size = (state->xsize * state->bits / planes + 7) / 8;
     if (strip_size > (unpacker_row_byte_size * rows_per_strip)) {
         // If the strip size as expected by LibTiff isn't what we're expecting, abort.
-        // man:   TIFFStripSize returns the equivalent size for a strip of data as it would be returned in a
-        //        call to TIFFReadEncodedStrip ...
+        // man:   TIFFStripSize returns the equivalent size for a strip of data as it
+        // would be returned in a call to TIFFReadEncodedStrip ...
         state->errcode = IMAGING_CODEC_BROKEN;
         return -1;
     }
@@ -509,8 +550,14 @@ _decodeStrip(Imaging im, ImagingCodecState state, TIFF *tiff, int planes, Imagin
         int plane;
         for (plane = 0; plane < planes; plane++) {
             ImagingShuffler shuffler = unpackers[plane];
-            if (TIFFReadEncodedStrip(tiff, TIFFComputeStrip(tiff, state->y, plane), (tdata_t)state->buffer, strip_size) == -1) {
-                TRACE(("Decode Error, strip %d\n", TIFFComputeStrip(tiff, state->y, 0)));
+            if (TIFFReadEncodedStrip(
+                    tiff,
+                    TIFFComputeStrip(tiff, state->y, plane),
+                    (tdata_t)state->buffer,
+                    strip_size
+                ) == -1) {
+                TRACE(("Decode Error, strip %d\n", TIFFComputeStrip(tiff, state->y, 0))
+                );
                 state->errcode = IMAGING_CODEC_BROKEN;
                 return -1;
             }
@@ -519,18 +566,20 @@ _decodeStrip(Imaging im, ImagingCodecState state, TIFF *tiff, int planes, Imagin
 
             // iterate over each row in the strip and stuff data into image
             for (strip_row = 0;
-                 strip_row < min((INT32) rows_per_strip, state->ysize - state->y);
+                 strip_row < min((INT32)rows_per_strip, state->ysize - state->y);
                  strip_row++) {
                 TRACE(("Writing data into line %d ; \n", state->y + strip_row));
 
-                // UINT8 * bbb = state->buffer + strip_row * (state->bytes / rows_per_strip);
-                // TRACE(("chars: %x %x %x %x\n", ((UINT8 *)bbb)[0], ((UINT8 *)bbb)[1], ((UINT8 *)bbb)[2], ((UINT8 *)bbb)[3]));
+                // UINT8 * bbb = state->buffer + strip_row * (state->bytes /
+                // rows_per_strip); TRACE(("chars: %x %x %x %x\n", ((UINT8 *)bbb)[0],
+                // ((UINT8 *)bbb)[1], ((UINT8 *)bbb)[2], ((UINT8 *)bbb)[3]));
 
                 shuffler(
-                    (UINT8*) im->image[state->y + state->yoff + strip_row] +
-                    state->xoff * im->pixelsize,
+                    (UINT8 *)im->image[state->y + state->yoff + strip_row] +
+                        state->xoff * im->pixelsize,
                     state->buffer + strip_row * row_byte_size,
-                    state->xsize);
+                    state->xsize
+                );
             }
         }
     }
@@ -540,7 +589,8 @@ _decodeStrip(Imaging im, ImagingCodecState state, TIFF *tiff, int planes, Imagin
 
 int
 ImagingLibTiffDecode(
-    Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes) {
+    Imaging im, ImagingCodecState state, UINT8 *buffer, Py_ssize_t bytes
+) {
     TIFFSTATE *clientstate = (TIFFSTATE *)state->context;
     char *filename = "tempfile.tif";
     char *mode = "rC";
@@ -565,13 +615,15 @@ ImagingLibTiffDecode(
          state->state,
          state->x,
          state->y,
-         state->ystep));
+         state->ystep)
+    );
     TRACE(
         ("State: xsize %d, ysize %d, xoff %d, yoff %d \n",
          state->xsize,
          state->ysize,
          state->xoff,
-         state->yoff));
+         state->yoff)
+    );
     TRACE(("State: bits %d, bytes %d \n", state->bits, state->bytes));
     TRACE(
         ("Buffer: %p: %c%c%c%c\n",
@@ -579,26 +631,30 @@ ImagingLibTiffDecode(
          (char)buffer[0],
          (char)buffer[1],
          (char)buffer[2],
-         (char)buffer[3]));
+         (char)buffer[3])
+    );
     TRACE(
         ("State->Buffer: %c%c%c%c\n",
          (char)state->buffer[0],
          (char)state->buffer[1],
          (char)state->buffer[2],
-         (char)state->buffer[3]));
+         (char)state->buffer[3])
+    );
     TRACE(
         ("Image: mode %s, type %d, bands: %d, xsize %d, ysize %d \n",
          im->mode,
          im->type,
          im->bands,
          im->xsize,
-         im->ysize));
+         im->ysize)
+    );
     TRACE(
         ("Image: image8 %p, image32 %p, image %p, block %p \n",
          im->image8,
          im->image32,
          im->image,
-         im->block));
+         im->block)
+    );
     TRACE(("Image: pixelsize: %d, linesize %d \n", im->pixelsize, im->linesize));
 
     dump_state(clientstate);
@@ -628,7 +684,8 @@ ImagingLibTiffDecode(
             _tiffCloseProc,
             _tiffSizeProc,
             _tiffMapProc,
-            _tiffUnmapProc);
+            _tiffUnmapProc
+        );
     }
 
     if (!tiff) {
@@ -657,12 +714,12 @@ ImagingLibTiffDecode(
              state->xsize,
              img_width,
              state->ysize,
-             img_height));
+             img_height)
+        );
         state->errcode = IMAGING_CODEC_BROKEN;
         goto decode_err;
     }
 
-
     TIFFGetField(tiff, TIFFTAG_PHOTOMETRIC, &photometric);
     TIFFGetField(tiff, TIFFTAG_COMPRESSION, &compression);
     TIFFGetFieldDefaulted(tiff, TIFFTAG_PLANARCONFIG, &planarconfig);
@@ -671,16 +728,17 @@ ImagingLibTiffDecode(
     // Let LibTiff read them as RGBA
     readAsRGBA = photometric == PHOTOMETRIC_YCBCR;
 
-    if (readAsRGBA && compression == COMPRESSION_JPEG && planarconfig == PLANARCONFIG_CONTIG) {
-        // If using new JPEG compression, let libjpeg do RGB conversion for performance reasons
+    if (readAsRGBA && compression == COMPRESSION_JPEG &&
+        planarconfig == PLANARCONFIG_CONTIG) {
+        // If using new JPEG compression, let libjpeg do RGB conversion for performance
+        // reasons
         TIFFSetField(tiff, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB);
         readAsRGBA = 0;
     }
 
     if (readAsRGBA) {
         _decodeAsRGBA(im, state, tiff);
-    }
-    else {
+    } else {
         planes = _pickUnpackers(im, state, tiff, planarconfig, unpackers);
         if (planes <= 0) {
             goto decode_err;
@@ -688,8 +746,7 @@ ImagingLibTiffDecode(
 
         if (TIFFIsTiled(tiff)) {
             _decodeTile(im, state, tiff, planes, unpackers);
-        }
-        else {
+        } else {
             _decodeStrip(im, state, tiff, planes, unpackers);
         }
 
@@ -698,20 +755,21 @@ ImagingLibTiffDecode(
             // so we have to convert it to RGBA
             if (planes > 3 && strcmp(im->mode, "RGBA") == 0) {
                 uint16_t extrasamples;
-                uint16_t* sampleinfo;
+                uint16_t *sampleinfo;
                 ImagingShuffler shuffle;
                 INT32 y;
 
-                TIFFGetFieldDefaulted(tiff, TIFFTAG_EXTRASAMPLES, &extrasamples, &sampleinfo);
+                TIFFGetFieldDefaulted(
+                    tiff, TIFFTAG_EXTRASAMPLES, &extrasamples, &sampleinfo
+                );
 
-                if (extrasamples >= 1 &&
-                    (sampleinfo[0] == EXTRASAMPLE_UNSPECIFIED || sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA)
-                    ) {
+                if (extrasamples >= 1 && (sampleinfo[0] == EXTRASAMPLE_UNSPECIFIED ||
+                                          sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA)) {
                     shuffle = ImagingFindUnpacker("RGBA", "RGBa", NULL);
 
                     for (y = state->yoff; y < state->ysize; y++) {
-                        UINT8* ptr = (UINT8*) im->image[y + state->yoff] +
-                            state->xoff * im->pixelsize;
+                        UINT8 *ptr = (UINT8 *)im->image[y + state->yoff] +
+                                     state->xoff * im->pixelsize;
                         shuffle(ptr, ptr, state->xsize);
                     }
                 }
@@ -719,8 +777,17 @@ ImagingLibTiffDecode(
         }
     }
 
- decode_err:
-    TIFFClose(tiff);
+decode_err:
+    // TIFFClose in libtiff calls tif_closeproc and TIFFCleanup
+    if (clientstate->fp) {
+        // Python will manage the closing of the file rather than libtiff
+        // So only call TIFFCleanup
+        TIFFCleanup(tiff);
+    } else {
+        // When tif_closeproc refers to our custom _tiffCloseProc though,
+        // that is fine, as it does not close the file
+        TIFFClose(tiff);
+    }
     TRACE(("Done Decoding, Returning \n"));
     // Returning -1 here to force ImageFile.load to break, rather than
     // even think about looping back around.
@@ -748,13 +815,15 @@ ImagingLibTiffEncodeInit(ImagingCodecState state, char *filename, int fp) {
          state->state,
          state->x,
          state->y,
-         state->ystep));
+         state->ystep)
+    );
     TRACE(
         ("State: xsize %d, ysize %d, xoff %d, yoff %d \n",
          state->xsize,
          state->ysize,
          state->xoff,
-         state->yoff));
+         state->yoff)
+    );
     TRACE(("State: bits %d, bytes %d \n", state->bits, state->bytes));
     TRACE(("State: context %p \n", state->context));
 
@@ -794,7 +863,8 @@ ImagingLibTiffEncodeInit(ImagingCodecState state, char *filename, int fp) {
             _tiffCloseProc,
             _tiffSizeProc,
             _tiffNullMapProc,
-            _tiffUnmapProc); /*force no mmap*/
+            _tiffUnmapProc
+        ); /*force no mmap*/
     }
 
     if (!clientstate->tiff) {
@@ -807,7 +877,8 @@ ImagingLibTiffEncodeInit(ImagingCodecState state, char *filename, int fp) {
 
 int
 ImagingLibTiffMergeFieldInfo(
-    ImagingCodecState state, TIFFDataType field_type, int key, int is_var_length) {
+    ImagingCodecState state, TIFFDataType field_type, int key, int is_var_length
+) {
     // Refer to libtiff docs (http://www.simplesystems.org/libtiff/addingtags.html)
     TIFFSTATE *clientstate = (TIFFSTATE *)state->context;
     uint32_t n;
@@ -829,7 +900,8 @@ ImagingLibTiffMergeFieldInfo(
          FIELD_CUSTOM,
          1,
          passcount,
-         "CustomField"}};
+         "CustomField"}
+    };
 
     n = sizeof(info) / sizeof(info[0]);
 
@@ -877,13 +949,15 @@ ImagingLibTiffEncode(Imaging im, ImagingCodecState state, UINT8 *buffer, int byt
          state->state,
          state->x,
          state->y,
-         state->ystep));
+         state->ystep)
+    );
     TRACE(
         ("State: xsize %d, ysize %d, xoff %d, yoff %d \n",
          state->xsize,
          state->ysize,
          state->xoff,
-         state->yoff));
+         state->yoff)
+    );
     TRACE(("State: bits %d, bytes %d \n", state->bits, state->bytes));
     TRACE(
         ("Buffer: %p: %c%c%c%c\n",
@@ -891,26 +965,30 @@ ImagingLibTiffEncode(Imaging im, ImagingCodecState state, UINT8 *buffer, int byt
          (char)buffer[0],
          (char)buffer[1],
          (char)buffer[2],
-         (char)buffer[3]));
+         (char)buffer[3])
+    );
     TRACE(
         ("State->Buffer: %c%c%c%c\n",
          (char)state->buffer[0],
          (char)state->buffer[1],
          (char)state->buffer[2],
-         (char)state->buffer[3]));
+         (char)state->buffer[3])
+    );
     TRACE(
         ("Image: mode %s, type %d, bands: %d, xsize %d, ysize %d \n",
          im->mode,
          im->type,
          im->bands,
          im->xsize,
-         im->ysize));
+         im->ysize)
+    );
     TRACE(
         ("Image: image8 %p, image32 %p, image %p, block %p \n",
          im->image8,
          im->image32,
          im->image,
-         im->block));
+         im->block)
+    );
     TRACE(("Image: pixelsize: %d, linesize %d \n", im->pixelsize, im->linesize));
 
     dump_state(clientstate);
@@ -922,13 +1000,25 @@ ImagingLibTiffEncode(Imaging im, ImagingCodecState state, UINT8 *buffer, int byt
                 state->buffer,
                 (UINT8 *)im->image[state->y + state->yoff] +
                     state->xoff * im->pixelsize,
-                state->xsize);
+                state->xsize
+            );
 
             if (TIFFWriteScanline(
-                    tiff, (tdata_t)(state->buffer), (uint32_t)state->y, 0) == -1) {
+                    tiff, (tdata_t)(state->buffer), (uint32_t)state->y, 0
+                ) == -1) {
                 TRACE(("Encode Error, row %d\n", state->y));
                 state->errcode = IMAGING_CODEC_BROKEN;
-                TIFFClose(tiff);
+
+                // TIFFClose in libtiff calls tif_closeproc and TIFFCleanup
+                if (clientstate->fp) {
+                    // Python will manage the closing of the file rather than libtiff
+                    // So only call TIFFCleanup
+                    TIFFCleanup(tiff);
+                } else {
+                    // When tif_closeproc refers to our custom _tiffCloseProc though,
+                    // that is fine, as it does not close the file
+                    TIFFClose(tiff);
+                }
                 if (!clientstate->fp) {
                     free(clientstate->data);
                 }
@@ -945,14 +1035,22 @@ ImagingLibTiffEncode(Imaging im, ImagingCodecState state, UINT8 *buffer, int byt
                 TRACE(("Error flushing the tiff"));
                 // likely reason is memory.
                 state->errcode = IMAGING_CODEC_MEMORY;
-                TIFFClose(tiff);
+                if (clientstate->fp) {
+                    TIFFCleanup(tiff);
+                } else {
+                    TIFFClose(tiff);
+                }
                 if (!clientstate->fp) {
                     free(clientstate->data);
                 }
                 return -1;
             }
             TRACE(("Closing \n"));
-            TIFFClose(tiff);
+            if (clientstate->fp) {
+                TIFFCleanup(tiff);
+            } else {
+                TIFFClose(tiff);
+            }
             // reset the clientstate metadata to use it to read out the buffer.
             clientstate->loc = 0;
             clientstate->size = clientstate->eof;  // redundant?
@@ -960,14 +1058,16 @@ ImagingLibTiffEncode(Imaging im, ImagingCodecState state, UINT8 *buffer, int byt
     }
 
     if (state->state == 1 && !clientstate->fp) {
-        int read = (int)_tiffReadProc(clientstate, (tdata_t)buffer, (tsize_t)bytes);
+        int read =
+            (int)_tiffReadProc((thandle_t)clientstate, (tdata_t)buffer, (tsize_t)bytes);
         TRACE(
             ("Buffer: %p: %c%c%c%c\n",
              buffer,
              (char)buffer[0],
              (char)buffer[1],
              (char)buffer[2],
-             (char)buffer[3]));
+             (char)buffer[3])
+        );
         if (clientstate->loc == clientstate->eof) {
             TRACE(("Hit EOF, calling an end, freeing data"));
             state->errcode = IMAGING_CODEC_END;
diff --git a/src/libImaging/TiffDecode.h b/src/libImaging/TiffDecode.h
index c7c7d48ed..22361210d 100644
--- a/src/libImaging/TiffDecode.h
+++ b/src/libImaging/TiffDecode.h
@@ -13,12 +13,6 @@
 #include <tiff.h>
 #endif
 
-/* UNDONE -- what are we using from this? */
-/*#ifndef _UNISTD_H
-  # include <unistd.h>
-  # endif
-*/
-
 #ifndef min
 #define min(x, y) ((x > y) ? y : x)
 #define max(x, y) ((x < y) ? y : x)
@@ -36,7 +30,7 @@ typedef struct {
                    * Should be uint32 for libtiff 3.9.x
                    * uint64 for libtiff 4.0.x
                    */
-    TIFF *tiff; /* Used in write */
+    TIFF *tiff;   /* Used in write */
     toff_t eof;
     int flrealloc; /* may we realloc */
 } TIFFSTATE;
@@ -47,7 +41,8 @@ extern int
 ImagingLibTiffEncodeInit(ImagingCodecState state, char *filename, int fp);
 extern int
 ImagingLibTiffMergeFieldInfo(
-    ImagingCodecState state, TIFFDataType field_type, int key, int is_var_length);
+    ImagingCodecState state, TIFFDataType field_type, int key, int is_var_length
+);
 extern int
 ImagingLibTiffSetField(ImagingCodecState state, ttag_t tag, ...);
 
diff --git a/src/libImaging/Unpack.c b/src/libImaging/Unpack.c
index 206403ba6..c23d5d889 100644
--- a/src/libImaging/Unpack.c
+++ b/src/libImaging/Unpack.c
@@ -31,6 +31,7 @@
  */
 
 #include "Imaging.h"
+#include "Convert.h"
 
 #define R 0
 #define G 1
@@ -103,7 +104,8 @@ static UINT8 BITFLIP[] = {
     3,  131, 67, 195, 35, 163, 99,  227, 19, 147, 83, 211, 51, 179, 115, 243,
     11, 139, 75, 203, 43, 171, 107, 235, 27, 155, 91, 219, 59, 187, 123, 251,
     7,  135, 71, 199, 39, 167, 103, 231, 23, 151, 87, 215, 55, 183, 119, 247,
-    15, 143, 79, 207, 47, 175, 111, 239, 31, 159, 95, 223, 63, 191, 127, 255};
+    15, 143, 79, 207, 47, 175, 111, 239, 31, 159, 95, 223, 63, 191, 127, 255
+};
 
 /* Unpack to "1" image */
 
@@ -717,6 +719,21 @@ ImagingUnpackBGRA15(UINT8 *out, const UINT8 *in, int pixels) {
     }
 }
 
+void
+ImagingUnpackBGRA15Z(UINT8 *out, const UINT8 *in, int pixels) {
+    int i, pixel;
+    /* RGB, rearranged channels, 5/5/5/1 bits per pixel, inverted alpha */
+    for (i = 0; i < pixels; i++) {
+        pixel = in[0] + (in[1] << 8);
+        out[B] = (pixel & 31) * 255 / 31;
+        out[G] = ((pixel >> 5) & 31) * 255 / 31;
+        out[R] = ((pixel >> 10) & 31) * 255 / 31;
+        out[A] = ~((pixel >> 15) * 255);
+        out += 4;
+        in += 2;
+    }
+}
+
 void
 ImagingUnpackRGB16(UINT8 *out, const UINT8 *in, int pixels) {
     int i, pixel;
@@ -789,6 +806,17 @@ ImagingUnpackBGRX(UINT8 *_out, const UINT8 *in, int pixels) {
     }
 }
 
+static void
+ImagingUnpackBGXR(UINT8 *_out, const UINT8 *in, int pixels) {
+    int i;
+    for (i = 0; i < pixels; i++) {
+        UINT32 iv = MAKE_UINT32(in[3], in[1], in[0], 255);
+        memcpy(_out, &iv, sizeof(iv));
+        in += 4;
+        _out += 4;
+    }
+}
+
 static void
 ImagingUnpackXRGB(UINT8 *_out, const UINT8 *in, int pixels) {
     int i;
@@ -818,7 +846,7 @@ ImagingUnpackXBGR(UINT8 *_out, const UINT8 *in, int pixels) {
 static void
 unpackRGBALA(UINT8 *_out, const UINT8 *in, int pixels) {
     int i;
-    /* greyscale with alpha */
+    /* grayscale with alpha */
     for (i = 0; i < pixels; i++) {
         UINT32 iv = MAKE_UINT32(in[0], in[0], in[0], in[1]);
         memcpy(_out, &iv, sizeof(iv));
@@ -830,7 +858,7 @@ unpackRGBALA(UINT8 *_out, const UINT8 *in, int pixels) {
 static void
 unpackRGBALA16B(UINT8 *_out, const UINT8 *in, int pixels) {
     int i;
-    /* 16-bit greyscale with alpha, big-endian */
+    /* 16-bit grayscale with alpha, big-endian */
     for (i = 0; i < pixels; i++) {
         UINT32 iv = MAKE_UINT32(in[0], in[0], in[0], in[2]);
         memcpy(_out, &iv, sizeof(iv));
@@ -855,7 +883,8 @@ unpackRGBa16L(UINT8 *_out, const UINT8 *in, int pixels) {
                 CLIP8(in[1] * 255 / a),
                 CLIP8(in[3] * 255 / a),
                 CLIP8(in[5] * 255 / a),
-                a);
+                a
+            );
         }
         memcpy(_out, &iv, sizeof(iv));
         in += 8;
@@ -879,7 +908,8 @@ unpackRGBa16B(UINT8 *_out, const UINT8 *in, int pixels) {
                 CLIP8(in[0] * 255 / a),
                 CLIP8(in[2] * 255 / a),
                 CLIP8(in[4] * 255 / a),
-                a);
+                a
+            );
         }
         memcpy(_out, &iv, sizeof(iv));
         in += 8;
@@ -903,7 +933,8 @@ unpackRGBa(UINT8 *_out, const UINT8 *in, int pixels) {
                 CLIP8(in[0] * 255 / a),
                 CLIP8(in[1] * 255 / a),
                 CLIP8(in[2] * 255 / a),
-                a);
+                a
+            );
         }
         memcpy(_out, &iv, sizeof(iv));
         in += 4;
@@ -927,7 +958,8 @@ unpackRGBaskip1(UINT8 *_out, const UINT8 *in, int pixels) {
                 CLIP8(in[0] * 255 / a),
                 CLIP8(in[1] * 255 / a),
                 CLIP8(in[2] * 255 / a),
-                a);
+                a
+            );
         }
         in += 5;
     }
@@ -949,7 +981,8 @@ unpackRGBaskip2(UINT8 *_out, const UINT8 *in, int pixels) {
                 CLIP8(in[0] * 255 / a),
                 CLIP8(in[1] * 255 / a),
                 CLIP8(in[2] * 255 / a),
-                a);
+                a
+            );
         }
         in += 6;
     }
@@ -971,7 +1004,8 @@ unpackBGRa(UINT8 *_out, const UINT8 *in, int pixels) {
                 CLIP8(in[2] * 255 / a),
                 CLIP8(in[1] * 255 / a),
                 CLIP8(in[0] * 255 / a),
-                a);
+                a
+            );
         }
         memcpy(_out, &iv, sizeof(iv));
         in += 4;
@@ -1002,7 +1036,8 @@ unpackRGBAL(UINT8 *_out, const UINT8 *in, int pixels) {
             in[i],
             in[i + pixels],
             in[i + pixels + pixels],
-            in[i + pixels + pixels + pixels]);
+            in[i + pixels + pixels + pixels]
+        );
         memcpy(_out, &iv, sizeof(iv));
     }
 }
@@ -1089,6 +1124,17 @@ unpackBGRA16B(UINT8 *_out, const UINT8 *in, int pixels) {
     }
 }
 
+static void
+unpackBGAR(UINT8 *_out, const UINT8 *in, int pixels) {
+    int i;
+    for (i = 0; i < pixels; i++) {
+        UINT32 iv = MAKE_UINT32(in[3], in[1], in[0], in[2]);
+        memcpy(_out, &iv, sizeof(iv));
+        in += 4;
+        _out += 4;
+    }
+}
+
 /* Unpack to "CMYK" image */
 
 static void
@@ -1107,7 +1153,7 @@ unpackCMYKI(UINT8 *_out, const UINT8 *in, int pixels) {
 /* There are two representations of LAB images for whatever precision:
    L: Uint (in PS, it's 0-100)
    A: Int (in ps, -128 .. 128, or elsewhere 0..255, with 128 as middle.
-           Channels in PS display a 0 value as middle grey,
+           Channels in PS display a 0 value as middle gray,
            LCMS appears to use 128 as the 0 value for these channels)
    B: Int (as above)
 
@@ -1171,7 +1217,7 @@ unpackI16R_I16(UINT8 *out, const UINT8 *in, int pixels) {
 
 static void
 unpackI12_I16(UINT8 *out, const UINT8 *in, int pixels) {
-    /*  Fillorder 1/MSB -> LittleEndian, for 12bit integer greyscale tiffs.
+    /*  Fillorder 1/MSB -> LittleEndian, for 12bit integer grayscale tiffs.
 
         According to the TIFF spec:
 
@@ -1238,6 +1284,12 @@ copy2(UINT8 *out, const UINT8 *in, int pixels) {
     memcpy(out, in, pixels * 2);
 }
 
+static void
+copy3(UINT8 *out, const UINT8 *in, int pixels) {
+    /* BGR;24 */
+    memcpy(out, in, pixels * 3);
+}
+
 static void
 copy4(UINT8 *out, const UINT8 *in, int pixels) {
     /* RGBA, CMYK quadruples */
@@ -1408,90 +1460,90 @@ band3I(UINT8 *out, const UINT8 *in, int pixels) {
 }
 
 static void
-band016B(UINT8* out, const UINT8* in, int pixels)
-{
+band016B(UINT8 *out, const UINT8 *in, int pixels) {
     int i;
     /* band 0 only, big endian */
     for (i = 0; i < pixels; i++) {
         out[0] = in[0];
-        out += 4; in += 2;
+        out += 4;
+        in += 2;
     }
 }
 
 static void
-band116B(UINT8* out, const UINT8* in, int pixels)
-{
+band116B(UINT8 *out, const UINT8 *in, int pixels) {
     int i;
     /* band 1 only, big endian */
     for (i = 0; i < pixels; i++) {
         out[1] = in[0];
-        out += 4; in += 2;
+        out += 4;
+        in += 2;
     }
 }
 
 static void
-band216B(UINT8* out, const UINT8* in, int pixels)
-{
+band216B(UINT8 *out, const UINT8 *in, int pixels) {
     int i;
     /* band 2 only, big endian */
     for (i = 0; i < pixels; i++) {
         out[2] = in[0];
-        out += 4; in += 2;
+        out += 4;
+        in += 2;
     }
 }
 
 static void
-band316B(UINT8* out, const UINT8* in, int pixels)
-{
+band316B(UINT8 *out, const UINT8 *in, int pixels) {
     int i;
     /* band 3 only, big endian */
     for (i = 0; i < pixels; i++) {
         out[3] = in[0];
-        out += 4; in += 2;
+        out += 4;
+        in += 2;
     }
 }
 
 static void
-band016L(UINT8* out, const UINT8* in, int pixels)
-{
+band016L(UINT8 *out, const UINT8 *in, int pixels) {
     int i;
     /* band 0 only, little endian */
     for (i = 0; i < pixels; i++) {
         out[0] = in[1];
-        out += 4; in += 2;
+        out += 4;
+        in += 2;
     }
 }
 
 static void
-band116L(UINT8* out, const UINT8* in, int pixels)
-{
+band116L(UINT8 *out, const UINT8 *in, int pixels) {
     int i;
     /* band 1 only, little endian */
     for (i = 0; i < pixels; i++) {
         out[1] = in[1];
-        out += 4; in += 2;
+        out += 4;
+        in += 2;
     }
 }
 
 static void
-band216L(UINT8* out, const UINT8* in, int pixels)
-{
+band216L(UINT8 *out, const UINT8 *in, int pixels) {
     int i;
     /* band 2 only, little endian */
     for (i = 0; i < pixels; i++) {
         out[2] = in[1];
-        out += 4; in += 2;
+        out += 4;
+        in += 2;
     }
 }
 
 static void
-band316L(UINT8* out, const UINT8* in, int pixels)
-{
+band316L(UINT8 *out, const UINT8 *in, int pixels) {
     int i;
     /* band 3 only, little endian */
     for (i = 0; i < pixels; i++) {
         out[3] = in[1];
-        out += 4; in += 2;
+        out += 4;
+        in += 2;
     }
 }
 
@@ -1509,7 +1561,7 @@ static struct {
 
     /* flags: "I" inverted data; "R" reversed bit order; "B" big
        endian byte order (default is little endian); "L" line
-       interleave, "S" signed, "F" floating point */
+       interleave, "S" signed, "F" floating point, "Z" inverted alpha */
 
     /* exception: rawmodes "I" and "F" are always native endian byte order */
 
@@ -1520,7 +1572,7 @@ static struct {
     {"1", "1;IR", 1, unpack1IR},
     {"1", "1;8", 8, unpack18},
 
-    /* greyscale */
+    /* grayscale */
     {"L", "L;2", 2, unpackL2},
     {"L", "L;2I", 2, unpackL2I},
     {"L", "L;2R", 2, unpackL2R},
@@ -1537,11 +1589,11 @@ static struct {
     {"L", "L;16", 16, unpackL16},
     {"L", "L;16B", 16, unpackL16B},
 
-    /* greyscale w. alpha */
+    /* grayscale w. alpha */
     {"LA", "LA", 16, unpackLA},
     {"LA", "LA;L", 16, unpackLAL},
 
-    /* greyscale w. alpha premultiplied */
+    /* grayscale w. alpha premultiplied */
     {"La", "La", 16, unpackLA},
 
     /* palette */
@@ -1553,6 +1605,7 @@ static struct {
     {"P", "P", 8, copy1},
     {"P", "P;R", 8, unpackLR},
     {"P", "L", 8, copy1},
+    {"P", "PX", 16, unpackL16B},
 
     /* palette w. alpha */
     {"PA", "PA", 16, unpackLA},
@@ -1570,13 +1623,18 @@ static struct {
     {"RGB", "BGR;15", 16, ImagingUnpackBGR15},
     {"RGB", "RGB;16", 16, ImagingUnpackRGB16},
     {"RGB", "BGR;16", 16, ImagingUnpackBGR16},
+    {"RGB", "RGBX;16L", 64, unpackRGBA16L},
+    {"RGB", "RGBX;16B", 64, unpackRGBA16B},
     {"RGB", "RGB;4B", 16, ImagingUnpackRGB4B},
     {"RGB", "BGR;5", 16, ImagingUnpackBGR15}, /* compat */
     {"RGB", "RGBX", 32, copy4},
     {"RGB", "RGBX;L", 32, unpackRGBAL},
+    {"RGB", "RGBXX", 40, copy4skip1},
+    {"RGB", "RGBXXX", 48, copy4skip2},
     {"RGB", "RGBA;L", 32, unpackRGBAL},
     {"RGB", "RGBA;15", 16, ImagingUnpackRGBA15},
     {"RGB", "BGRX", 32, ImagingUnpackBGRX},
+    {"RGB", "BGXR", 32, ImagingUnpackBGXR},
     {"RGB", "XRGB", 32, ImagingUnpackXRGB},
     {"RGB", "XBGR", 32, ImagingUnpackXBGR},
     {"RGB", "YCC;P", 24, ImagingUnpackYCC},
@@ -1589,6 +1647,11 @@ static struct {
     {"RGB", "R;16B", 16, band016B},
     {"RGB", "G;16B", 16, band116B},
     {"RGB", "B;16B", 16, band216B},
+    {"RGB", "CMYK", 32, cmyk2rgb},
+
+    {"BGR;15", "BGR;15", 16, copy2},
+    {"BGR;16", "BGR;16", 16, copy2},
+    {"BGR;24", "BGR;24", 24, copy3},
 
     /* true colour w. alpha */
     {"RGBA", "LA", 16, unpackRGBALA},
@@ -1606,12 +1669,14 @@ static struct {
     {"RGBA", "RGBA;L", 32, unpackRGBAL},
     {"RGBA", "RGBA;15", 16, ImagingUnpackRGBA15},
     {"RGBA", "BGRA;15", 16, ImagingUnpackBGRA15},
+    {"RGBA", "BGRA;15Z", 16, ImagingUnpackBGRA15Z},
     {"RGBA", "RGBA;4B", 16, ImagingUnpackRGBA4B},
     {"RGBA", "RGBA;16L", 64, unpackRGBA16L},
     {"RGBA", "RGBA;16B", 64, unpackRGBA16B},
     {"RGBA", "BGRA", 32, unpackBGRA},
     {"RGBA", "BGRA;16L", 64, unpackBGRA16L},
     {"RGBA", "BGRA;16B", 64, unpackBGRA16B},
+    {"RGBA", "BGAR", 32, unpackBGAR},
     {"RGBA", "ARGB", 32, unpackARGB},
     {"RGBA", "ABGR", 32, unpackABGR},
     {"RGBA", "YCCA;P", 32, ImagingUnpackYCCA},
@@ -1650,7 +1715,6 @@ static struct {
     {"RGB", "G;16N", 16, band116L},
     {"RGB", "B;16N", 16, band216L},
 
-
     {"RGBA", "R;16N", 16, band016L},
     {"RGBA", "G;16N", 16, band116L},
     {"RGBA", "B;16N", 16, band216L},
diff --git a/src/libImaging/UnpackYCC.c b/src/libImaging/UnpackYCC.c
index 0b177bdd4..35b0c3b69 100644
--- a/src/libImaging/UnpackYCC.c
+++ b/src/libImaging/UnpackYCC.c
@@ -34,7 +34,8 @@ static INT16 L[] = {
     261, 262, 264, 265, 266, 268, 269, 270, 272, 273, 274, 276, 277, 278, 280, 281,
     283, 284, 285, 287, 288, 289, 291, 292, 293, 295, 296, 297, 299, 300, 302, 303,
     304, 306, 307, 308, 310, 311, 312, 314, 315, 317, 318, 319, 321, 322, 323, 325,
-    326, 327, 329, 330, 331, 333, 334, 336, 337, 338, 340, 341, 342, 344, 345, 346};
+    326, 327, 329, 330, 331, 333, 334, 336, 337, 338, 340, 341, 342, 344, 345, 346
+};
 
 static INT16 CB[] = {
     -345, -343, -341, -338, -336, -334, -332, -329, -327, -325, -323, -321, -318, -316,
@@ -55,7 +56,8 @@ static INT16 CB[] = {
     120,  122,  124,  126,  129,  131,  133,  135,  138,  140,  142,  144,  146,  149,
     151,  153,  155,  157,  160,  162,  164,  166,  169,  171,  173,  175,  177,  180,
     182,  184,  186,  189,  191,  193,  195,  197,  200,  202,  204,  206,  208,  211,
-    213,  215,  217,  220};
+    213,  215,  217,  220
+};
 
 static INT16 GB[] = {
     67,  67,  66,  66,  65,  65,  65,  64,  64,  63,  63,  62,  62,  62,  61,  61,
@@ -73,7 +75,8 @@ static INT16 GB[] = {
     -14, -15, -15, -16, -16, -17, -17, -18, -18, -18, -19, -19, -20, -20, -21, -21,
     -21, -22, -22, -23, -23, -24, -24, -24, -25, -25, -26, -26, -27, -27, -27, -28,
     -28, -29, -29, -30, -30, -30, -31, -31, -32, -32, -33, -33, -33, -34, -34, -35,
-    -35, -36, -36, -36, -37, -37, -38, -38, -39, -39, -39, -40, -40, -41, -41, -42};
+    -35, -36, -36, -36, -37, -37, -38, -38, -39, -39, -39, -40, -40, -41, -41, -42
+};
 
 static INT16 CR[] = {
     -249, -247, -245, -243, -241, -239, -238, -236, -234, -232, -230, -229, -227, -225,
@@ -94,7 +97,8 @@ static INT16 CR[] = {
     133,  135,  137,  138,  140,  142,  144,  146,  148,  149,  151,  153,  155,  157,
     158,  160,  162,  164,  166,  168,  169,  171,  173,  175,  177,  179,  180,  182,
     184,  186,  188,  189,  191,  193,  195,  197,  199,  200,  202,  204,  206,  208,
-    209,  211,  213,  215};
+    209,  211,  213,  215
+};
 
 static INT16 GR[] = {
     127, 126, 125, 124, 123, 122, 121,  121,  120,  119,  118,  117,  116,  115,  114,
@@ -114,7 +118,8 @@ static INT16 GR[] = {
     -67, -68, -69, -69, -70, -71, -72,  -73,  -74,  -75,  -76,  -77,  -78,  -79,  -80,
     -81, -82, -82, -83, -84, -85, -86,  -87,  -88,  -89,  -90,  -91,  -92,  -93,  -94,
     -94, -95, -96, -97, -98, -99, -100, -101, -102, -103, -104, -105, -106, -107, -107,
-    -108};
+    -108
+};
 
 #define R 0
 #define G 1
diff --git a/src/libImaging/UnsharpMask.c b/src/libImaging/UnsharpMask.c
index 643ced49f..e714749ef 100644
--- a/src/libImaging/UnsharpMask.c
+++ b/src/libImaging/UnsharpMask.c
@@ -23,7 +23,8 @@ clip8(int in) {
 
 Imaging
 ImagingUnsharpMask(
-    Imaging imOut, Imaging imIn, float radius, int percent, int threshold) {
+    Imaging imOut, Imaging imIn, float radius, int percent, int threshold
+) {
     ImagingSectionCookie cookie;
     Imaging result;
 
@@ -36,7 +37,7 @@ ImagingUnsharpMask(
 
     /* First, do a gaussian blur on the image, putting results in imOut
        temporarily. All format checks are in gaussian blur. */
-    result = ImagingGaussianBlur(imOut, imIn, radius, 3);
+    result = ImagingGaussianBlur(imOut, imIn, radius, radius, 3);
     if (!result) {
         return NULL;
     }
diff --git a/src/libImaging/XbmEncode.c b/src/libImaging/XbmEncode.c
index eec4c0d84..65cc3c633 100644
--- a/src/libImaging/XbmEncode.c
+++ b/src/libImaging/XbmEncode.c
@@ -40,7 +40,8 @@ ImagingXbmEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
         state->shuffle(
             state->buffer,
             (UINT8 *)im->image[state->y + state->yoff] + state->xoff * im->pixelsize,
-            state->xsize);
+            state->xsize
+        );
 
         if (state->y < state->ysize - 1) {
             /* any line but the last */
diff --git a/src/libImaging/ZipDecode.c b/src/libImaging/ZipDecode.c
index 874967834..d964ff2ca 100644
--- a/src/libImaging/ZipDecode.c
+++ b/src/libImaging/ZipDecode.c
@@ -217,7 +217,8 @@ ImagingZipDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t byt
                     state->shuffle(
                         (UINT8 *)im->image[state->y] + col * im->pixelsize,
                         state->buffer + context->prefix + i,
-                        1);
+                        1
+                    );
                     col += COL_INCREMENT[context->pass];
                 }
             } else {
@@ -229,7 +230,8 @@ ImagingZipDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t byt
                     UINT8 byte = *(state->buffer + context->prefix + (i / 8));
                     byte <<= (i % 8);
                     state->shuffle(
-                        (UINT8 *)im->image[state->y] + col * im->pixelsize, &byte, 1);
+                        (UINT8 *)im->image[state->y] + col * im->pixelsize, &byte, 1
+                    );
                     col += COL_INCREMENT[context->pass];
                 }
             }
@@ -253,7 +255,8 @@ ImagingZipDecode(Imaging im, ImagingCodecState state, UINT8 *buf, Py_ssize_t byt
                 (UINT8 *)im->image[state->y + state->yoff] +
                     state->xoff * im->pixelsize,
                 state->buffer + context->prefix,
-                state->xsize);
+                state->xsize
+            );
             state->y++;
         }
 
diff --git a/src/libImaging/ZipEncode.c b/src/libImaging/ZipEncode.c
index edbce3682..44f2629cc 100644
--- a/src/libImaging/ZipEncode.c
+++ b/src/libImaging/ZipEncode.c
@@ -98,7 +98,8 @@ ImagingZipEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
             15,
             9,
             /* compression strategy (image data are filtered)*/
-            compress_type);
+            compress_type
+        );
         if (err < 0) {
             state->errcode = IMAGING_CODEC_CONFIG;
             return -1;
@@ -108,7 +109,8 @@ ImagingZipEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
             err = deflateSetDictionary(
                 &context->z_stream,
                 (unsigned char *)context->dictionary,
-                context->dictionary_size);
+                context->dictionary_size
+            );
             if (err < 0) {
                 state->errcode = IMAGING_CODEC_CONFIG;
                 return -1;
@@ -163,7 +165,8 @@ ImagingZipEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
                         state->buffer + 1,
                         (UINT8 *)im->image[state->y + state->yoff] +
                             state->xoff * im->pixelsize,
-                        state->xsize);
+                        state->xsize
+                    );
 
                     state->y++;
 
diff --git a/src/map.c b/src/map.c
index c298bd148..c66702981 100644
--- a/src/map.c
+++ b/src/map.c
@@ -72,7 +72,8 @@ PyImaging_MapBuffer(PyObject *self, PyObject *args) {
             &offset,
             &mode,
             &stride,
-            &ystep)) {
+            &ystep
+        )) {
         return NULL;
     }
 
diff --git a/src/outline.c b/src/outline.c
index 0a9a3646e..27cc255cf 100644
--- a/src/outline.c
+++ b/src/outline.c
@@ -155,18 +155,18 @@ static struct PyMethodDef _outline_methods[] = {
 
 static PyTypeObject OutlineType = {
     PyVarObject_HEAD_INIT(NULL, 0) "Outline", /*tp_name*/
-    sizeof(OutlineObject),                    /*tp_size*/
+    sizeof(OutlineObject),                    /*tp_basicsize*/
     0,                                        /*tp_itemsize*/
     /* methods */
     (destructor)_outline_dealloc, /*tp_dealloc*/
-    0,                            /*tp_print*/
+    0,                            /*tp_vectorcall_offset*/
     0,                            /*tp_getattr*/
     0,                            /*tp_setattr*/
-    0,                            /*tp_compare*/
+    0,                            /*tp_as_async*/
     0,                            /*tp_repr*/
-    0,                            /*tp_as_number */
-    0,                            /*tp_as_sequence */
-    0,                            /*tp_as_mapping */
+    0,                            /*tp_as_number*/
+    0,                            /*tp_as_sequence*/
+    0,                            /*tp_as_mapping*/
     0,                            /*tp_hash*/
     0,                            /*tp_call*/
     0,                            /*tp_str*/
diff --git a/src/path.c b/src/path.c
index e17580fa2..067f42f62 100644
--- a/src/path.c
+++ b/src/path.c
@@ -26,6 +26,7 @@
  */
 
 #include "Python.h"
+#include "thirdparty/pythoncapi_compat.h"
 #include "libImaging/Imaging.h"
 
 #include <math.h>
@@ -43,7 +44,7 @@ PyImaging_GetBuffer(PyObject *buffer, Py_buffer *view);
 typedef struct {
     PyObject_HEAD Py_ssize_t count;
     double *xy;
-    int index; /* temporary use, e.g. in decimate */
+    int mapping;
 } PyPathObject;
 
 static PyTypeObject PyPathType;
@@ -91,6 +92,7 @@ path_new(Py_ssize_t count, double *xy, int duplicate) {
 
     path->count = count;
     path->xy = xy;
+    path->mapping = 0;
 
     return path;
 }
@@ -162,31 +164,38 @@ PyPath_Flatten(PyObject *data, double **pxy) {
         return -1;
     }
 
-#define assign_item_to_array(op, decref) \
-if (PyFloat_Check(op)) { \
-    xy[j++] = PyFloat_AS_DOUBLE(op); \
-} else if (PyLong_Check(op)) { \
-    xy[j++] = (float)PyLong_AS_LONG(op); \
-} else if (PyNumber_Check(op)) { \
-    xy[j++] = PyFloat_AsDouble(op); \
-} else if (PyArg_ParseTuple(op, "dd", &x, &y)) { \
-    xy[j++] = x; \
-    xy[j++] = y; \
-} else { \
-    PyErr_SetString(PyExc_ValueError, "incorrect coordinate type"); \
-    if (decref) { \
-        Py_DECREF(op); \
-    } \
-    free(xy); \
-    return -1; \
-}
+#define assign_item_to_array(op, decref)                                \
+    if (PyFloat_Check(op)) {                                            \
+        xy[j++] = PyFloat_AS_DOUBLE(op);                                \
+    } else if (PyLong_Check(op)) {                                      \
+        xy[j++] = (float)PyLong_AS_LONG(op);                            \
+    } else if (PyNumber_Check(op)) {                                    \
+        xy[j++] = PyFloat_AsDouble(op);                                 \
+    } else if (PyArg_ParseTuple(op, "dd", &x, &y)) {                    \
+        xy[j++] = x;                                                    \
+        xy[j++] = y;                                                    \
+    } else {                                                            \
+        PyErr_SetString(PyExc_ValueError, "incorrect coordinate type"); \
+        if (decref) {                                                   \
+            Py_DECREF(op);                                              \
+        }                                                               \
+        free(xy);                                                       \
+        return -1;                                                      \
+    }                                                                   \
+    if (decref) {                                                       \
+        Py_DECREF(op);                                                  \
+    }
 
     /* Copy table to path array */
     if (PyList_Check(data)) {
         for (i = 0; i < n; i++) {
             double x, y;
-            PyObject *op = PyList_GET_ITEM(data, i);
-            assign_item_to_array(op, 0);
+            PyObject *op = PyList_GetItemRef(data, i);
+            if (op == NULL) {
+                free(xy);
+                return -1;
+            }
+            assign_item_to_array(op, 1);
         }
     } else if (PyTuple_Check(data)) {
         for (i = 0; i < n; i++) {
@@ -209,7 +218,6 @@ if (PyFloat_Check(op)) { \
                 }
             }
             assign_item_to_array(op, 1);
-            Py_DECREF(op);
         }
     }
 
@@ -270,6 +278,10 @@ path_compact(PyPathObject *self, PyObject *args) {
 
     double cityblock = 2.0;
 
+    if (self->mapping) {
+        PyErr_SetString(PyExc_ValueError, "Path compacted during mapping");
+        return NULL;
+    }
     if (!PyArg_ParseTuple(args, "|d:compact", &cityblock)) {
         return NULL;
     }
@@ -387,11 +399,13 @@ path_map(PyPathObject *self, PyObject *args) {
     xy = self->xy;
 
     /* apply function to coordinate set */
+    self->mapping = 1;
     for (i = 0; i < self->count; i++) {
         double x = xy[i + i];
         double y = xy[i + i + 1];
         PyObject *item = PyObject_CallFunction(function, "dd", x, y);
         if (!item || !PyArg_ParseTuple(item, "dd", &x, &y)) {
+            self->mapping = 0;
             Py_XDECREF(item);
             return NULL;
         }
@@ -399,6 +413,7 @@ path_map(PyPathObject *self, PyObject *args) {
         xy[i + i + 1] = y;
         Py_DECREF(item);
     }
+    self->mapping = 0;
 
     Py_INCREF(Py_None);
     return Py_None;
@@ -482,7 +497,8 @@ path_transform(PyPathObject *self, PyObject *args) {
     double wrap = 0.0;
 
     if (!PyArg_ParseTuple(
-            args, "(dddddd)|d:transform", &a, &b, &c, &d, &e, &f, &wrap)) {
+            args, "(dddddd)|d:transform", &a, &b, &c, &d, &e, &f, &wrap
+        )) {
         return NULL;
     }
 
@@ -563,7 +579,8 @@ path_subscript(PyPathObject *self, PyObject *item) {
         PyErr_Format(
             PyExc_TypeError,
             "Path indices must be integers, not %.200s",
-            Py_TYPE(item)->tp_name);
+            Py_TYPE(item)->tp_name
+        );
         return NULL;
     }
 }
@@ -579,22 +596,23 @@ static PySequenceMethods path_as_sequence = {
 };
 
 static PyMappingMethods path_as_mapping = {
-    (lenfunc)path_len, (binaryfunc)path_subscript, NULL};
+    (lenfunc)path_len, (binaryfunc)path_subscript, NULL
+};
 
 static PyTypeObject PyPathType = {
     PyVarObject_HEAD_INIT(NULL, 0) "Path", /*tp_name*/
-    sizeof(PyPathObject),                  /*tp_size*/
+    sizeof(PyPathObject),                  /*tp_basicsize*/
     0,                                     /*tp_itemsize*/
     /* methods */
     (destructor)path_dealloc, /*tp_dealloc*/
-    0,                        /*tp_print*/
+    0,                        /*tp_vectorcall_offset*/
     0,                        /*tp_getattr*/
     0,                        /*tp_setattr*/
-    0,                        /*tp_compare*/
+    0,                        /*tp_as_async*/
     0,                        /*tp_repr*/
-    0,                        /*tp_as_number */
-    &path_as_sequence,        /*tp_as_sequence */
-    &path_as_mapping,         /*tp_as_mapping */
+    0,                        /*tp_as_number*/
+    &path_as_sequence,        /*tp_as_sequence*/
+    &path_as_mapping,         /*tp_as_mapping*/
     0,                        /*tp_hash*/
     0,                        /*tp_call*/
     0,                        /*tp_str*/
diff --git a/src/thirdparty/pythoncapi_compat.h b/src/thirdparty/pythoncapi_compat.h
new file mode 100644
index 000000000..ca23d5ffa
--- /dev/null
+++ b/src/thirdparty/pythoncapi_compat.h
@@ -0,0 +1,1699 @@
+// Header file providing new C API functions to old Python versions.
+//
+// File distributed under the Zero Clause BSD (0BSD) license.
+// Copyright Contributors to the pythoncapi_compat project.
+//
+// Homepage:
+// https://github.com/python/pythoncapi_compat
+//
+// Latest version:
+// https://raw.githubusercontent.com/python/pythoncapi-compat/main/pythoncapi_compat.h
+//
+// This file was vendored from the following commit:
+// https://github.com/python/pythoncapi-compat/commit/0041177c4f348c8952b4c8980b2c90856e61c7c7
+//
+// SPDX-License-Identifier: 0BSD
+
+#ifndef PYTHONCAPI_COMPAT
+#define PYTHONCAPI_COMPAT
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <Python.h>
+
+// Python 3.11.0b4 added PyFrame_Back() to Python.h
+#if PY_VERSION_HEX < 0x030b00B4 && !defined(PYPY_VERSION)
+#  include "frameobject.h"        // PyFrameObject, PyFrame_GetBack()
+#endif
+
+
+#ifndef _Py_CAST
+#  define _Py_CAST(type, expr) ((type)(expr))
+#endif
+
+// Static inline functions should use _Py_NULL rather than using directly NULL
+// to prevent C++ compiler warnings. On C23 and newer and on C++11 and newer,
+// _Py_NULL is defined as nullptr.
+#if (defined (__STDC_VERSION__) && __STDC_VERSION__ > 201710L) \
+        || (defined(__cplusplus) && __cplusplus >= 201103)
+#  define _Py_NULL nullptr
+#else
+#  define _Py_NULL NULL
+#endif
+
+// Cast argument to PyObject* type.
+#ifndef _PyObject_CAST
+#  define _PyObject_CAST(op) _Py_CAST(PyObject*, op)
+#endif
+
+#ifndef Py_BUILD_ASSERT
+#  define Py_BUILD_ASSERT(cond) \
+        do { \
+            (void)sizeof(char [1 - 2 * !(cond)]); \
+        } while(0)
+#endif
+
+
+// bpo-42262 added Py_NewRef() to Python 3.10.0a3
+#if PY_VERSION_HEX < 0x030A00A3 && !defined(Py_NewRef)
+static inline PyObject* _Py_NewRef(PyObject *obj)
+{
+    Py_INCREF(obj);
+    return obj;
+}
+#define Py_NewRef(obj) _Py_NewRef(_PyObject_CAST(obj))
+#endif
+
+
+// bpo-42262 added Py_XNewRef() to Python 3.10.0a3
+#if PY_VERSION_HEX < 0x030A00A3 && !defined(Py_XNewRef)
+static inline PyObject* _Py_XNewRef(PyObject *obj)
+{
+    Py_XINCREF(obj);
+    return obj;
+}
+#define Py_XNewRef(obj) _Py_XNewRef(_PyObject_CAST(obj))
+#endif
+
+
+// bpo-39573 added Py_SET_REFCNT() to Python 3.9.0a4
+#if PY_VERSION_HEX < 0x030900A4 && !defined(Py_SET_REFCNT)
+static inline void _Py_SET_REFCNT(PyObject *ob, Py_ssize_t refcnt)
+{
+    ob->ob_refcnt = refcnt;
+}
+#define Py_SET_REFCNT(ob, refcnt) _Py_SET_REFCNT(_PyObject_CAST(ob), refcnt)
+#endif
+
+
+// Py_SETREF() and Py_XSETREF() were added to Python 3.5.2.
+// It is excluded from the limited C API.
+#if (PY_VERSION_HEX < 0x03050200 && !defined(Py_SETREF)) && !defined(Py_LIMITED_API)
+#define Py_SETREF(dst, src)                                     \
+    do {                                                        \
+        PyObject **_tmp_dst_ptr = _Py_CAST(PyObject**, &(dst)); \
+        PyObject *_tmp_dst = (*_tmp_dst_ptr);                   \
+        *_tmp_dst_ptr = _PyObject_CAST(src);                    \
+        Py_DECREF(_tmp_dst);                                    \
+    } while (0)
+
+#define Py_XSETREF(dst, src)                                    \
+    do {                                                        \
+        PyObject **_tmp_dst_ptr = _Py_CAST(PyObject**, &(dst)); \
+        PyObject *_tmp_dst = (*_tmp_dst_ptr);                   \
+        *_tmp_dst_ptr = _PyObject_CAST(src);                    \
+        Py_XDECREF(_tmp_dst);                                   \
+    } while (0)
+#endif
+
+
+// bpo-43753 added Py_Is(), Py_IsNone(), Py_IsTrue() and Py_IsFalse()
+// to Python 3.10.0b1.
+#if PY_VERSION_HEX < 0x030A00B1 && !defined(Py_Is)
+#  define Py_Is(x, y) ((x) == (y))
+#endif
+#if PY_VERSION_HEX < 0x030A00B1 && !defined(Py_IsNone)
+#  define Py_IsNone(x) Py_Is(x, Py_None)
+#endif
+#if (PY_VERSION_HEX < 0x030A00B1 || defined(PYPY_VERSION)) && !defined(Py_IsTrue)
+#  define Py_IsTrue(x) Py_Is(x, Py_True)
+#endif
+#if (PY_VERSION_HEX < 0x030A00B1 || defined(PYPY_VERSION)) && !defined(Py_IsFalse)
+#  define Py_IsFalse(x) Py_Is(x, Py_False)
+#endif
+
+
+// bpo-39573 added Py_SET_TYPE() to Python 3.9.0a4
+#if PY_VERSION_HEX < 0x030900A4 && !defined(Py_SET_TYPE)
+static inline void _Py_SET_TYPE(PyObject *ob, PyTypeObject *type)
+{
+    ob->ob_type = type;
+}
+#define Py_SET_TYPE(ob, type) _Py_SET_TYPE(_PyObject_CAST(ob), type)
+#endif
+
+
+// bpo-39573 added Py_SET_SIZE() to Python 3.9.0a4
+#if PY_VERSION_HEX < 0x030900A4 && !defined(Py_SET_SIZE)
+static inline void _Py_SET_SIZE(PyVarObject *ob, Py_ssize_t size)
+{
+    ob->ob_size = size;
+}
+#define Py_SET_SIZE(ob, size) _Py_SET_SIZE((PyVarObject*)(ob), size)
+#endif
+
+
+// bpo-40421 added PyFrame_GetCode() to Python 3.9.0b1
+#if PY_VERSION_HEX < 0x030900B1 || defined(PYPY_VERSION)
+static inline PyCodeObject* PyFrame_GetCode(PyFrameObject *frame)
+{
+    assert(frame != _Py_NULL);
+    assert(frame->f_code != _Py_NULL);
+    return _Py_CAST(PyCodeObject*, Py_NewRef(frame->f_code));
+}
+#endif
+
+static inline PyCodeObject* _PyFrame_GetCodeBorrow(PyFrameObject *frame)
+{
+    PyCodeObject *code = PyFrame_GetCode(frame);
+    Py_DECREF(code);
+    return code;
+}
+
+
+// bpo-40421 added PyFrame_GetBack() to Python 3.9.0b1
+#if PY_VERSION_HEX < 0x030900B1 && !defined(PYPY_VERSION)
+static inline PyFrameObject* PyFrame_GetBack(PyFrameObject *frame)
+{
+    assert(frame != _Py_NULL);
+    return _Py_CAST(PyFrameObject*, Py_XNewRef(frame->f_back));
+}
+#endif
+
+#if !defined(PYPY_VERSION)
+static inline PyFrameObject* _PyFrame_GetBackBorrow(PyFrameObject *frame)
+{
+    PyFrameObject *back = PyFrame_GetBack(frame);
+    Py_XDECREF(back);
+    return back;
+}
+#endif
+
+
+// bpo-40421 added PyFrame_GetLocals() to Python 3.11.0a7
+#if PY_VERSION_HEX < 0x030B00A7 && !defined(PYPY_VERSION)
+static inline PyObject* PyFrame_GetLocals(PyFrameObject *frame)
+{
+#if PY_VERSION_HEX >= 0x030400B1
+    if (PyFrame_FastToLocalsWithError(frame) < 0) {
+        return NULL;
+    }
+#else
+    PyFrame_FastToLocals(frame);
+#endif
+    return Py_NewRef(frame->f_locals);
+}
+#endif
+
+
+// bpo-40421 added PyFrame_GetGlobals() to Python 3.11.0a7
+#if PY_VERSION_HEX < 0x030B00A7 && !defined(PYPY_VERSION)
+static inline PyObject* PyFrame_GetGlobals(PyFrameObject *frame)
+{
+    return Py_NewRef(frame->f_globals);
+}
+#endif
+
+
+// bpo-40421 added PyFrame_GetBuiltins() to Python 3.11.0a7
+#if PY_VERSION_HEX < 0x030B00A7 && !defined(PYPY_VERSION)
+static inline PyObject* PyFrame_GetBuiltins(PyFrameObject *frame)
+{
+    return Py_NewRef(frame->f_builtins);
+}
+#endif
+
+
+// bpo-40421 added PyFrame_GetLasti() to Python 3.11.0b1
+#if PY_VERSION_HEX < 0x030B00B1 && !defined(PYPY_VERSION)
+static inline int PyFrame_GetLasti(PyFrameObject *frame)
+{
+#if PY_VERSION_HEX >= 0x030A00A7
+    // bpo-27129: Since Python 3.10.0a7, f_lasti is an instruction offset,
+    // not a bytes offset anymore. Python uses 16-bit "wordcode" (2 bytes)
+    // instructions.
+    if (frame->f_lasti < 0) {
+        return -1;
+    }
+    return frame->f_lasti * 2;
+#else
+    return frame->f_lasti;
+#endif
+}
+#endif
+
+
+// gh-91248 added PyFrame_GetVar() to Python 3.12.0a2
+#if PY_VERSION_HEX < 0x030C00A2 && !defined(PYPY_VERSION)
+static inline PyObject* PyFrame_GetVar(PyFrameObject *frame, PyObject *name)
+{
+    PyObject *locals, *value;
+
+    locals = PyFrame_GetLocals(frame);
+    if (locals == NULL) {
+        return NULL;
+    }
+#if PY_VERSION_HEX >= 0x03000000
+    value = PyDict_GetItemWithError(locals, name);
+#else
+    value = _PyDict_GetItemWithError(locals, name);
+#endif
+    Py_DECREF(locals);
+
+    if (value == NULL) {
+        if (PyErr_Occurred()) {
+            return NULL;
+        }
+#if PY_VERSION_HEX >= 0x03000000
+        PyErr_Format(PyExc_NameError, "variable %R does not exist", name);
+#else
+        PyErr_SetString(PyExc_NameError, "variable does not exist");
+#endif
+        return NULL;
+    }
+    return Py_NewRef(value);
+}
+#endif
+
+
+// gh-91248 added PyFrame_GetVarString() to Python 3.12.0a2
+#if PY_VERSION_HEX < 0x030C00A2 && !defined(PYPY_VERSION)
+static inline PyObject*
+PyFrame_GetVarString(PyFrameObject *frame, const char *name)
+{
+    PyObject *name_obj, *value;
+#if PY_VERSION_HEX >= 0x03000000
+    name_obj = PyUnicode_FromString(name);
+#else
+    name_obj = PyString_FromString(name);
+#endif
+    if (name_obj == NULL) {
+        return NULL;
+    }
+    value = PyFrame_GetVar(frame, name_obj);
+    Py_DECREF(name_obj);
+    return value;
+}
+#endif
+
+
+// bpo-39947 added PyThreadState_GetInterpreter() to Python 3.9.0a5
+#if PY_VERSION_HEX < 0x030900A5 || defined(PYPY_VERSION)
+static inline PyInterpreterState *
+PyThreadState_GetInterpreter(PyThreadState *tstate)
+{
+    assert(tstate != _Py_NULL);
+    return tstate->interp;
+}
+#endif
+
+
+// bpo-40429 added PyThreadState_GetFrame() to Python 3.9.0b1
+#if PY_VERSION_HEX < 0x030900B1 && !defined(PYPY_VERSION)
+static inline PyFrameObject* PyThreadState_GetFrame(PyThreadState *tstate)
+{
+    assert(tstate != _Py_NULL);
+    return _Py_CAST(PyFrameObject *, Py_XNewRef(tstate->frame));
+}
+#endif
+
+#if !defined(PYPY_VERSION)
+static inline PyFrameObject*
+_PyThreadState_GetFrameBorrow(PyThreadState *tstate)
+{
+    PyFrameObject *frame = PyThreadState_GetFrame(tstate);
+    Py_XDECREF(frame);
+    return frame;
+}
+#endif
+
+
+// bpo-39947 added PyInterpreterState_Get() to Python 3.9.0a5
+#if PY_VERSION_HEX < 0x030900A5 || defined(PYPY_VERSION)
+static inline PyInterpreterState* PyInterpreterState_Get(void)
+{
+    PyThreadState *tstate;
+    PyInterpreterState *interp;
+
+    tstate = PyThreadState_GET();
+    if (tstate == _Py_NULL) {
+        Py_FatalError("GIL released (tstate is NULL)");
+    }
+    interp = tstate->interp;
+    if (interp == _Py_NULL) {
+        Py_FatalError("no current interpreter");
+    }
+    return interp;
+}
+#endif
+
+
+// bpo-39947 added PyInterpreterState_Get() to Python 3.9.0a6
+#if 0x030700A1 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x030900A6 && !defined(PYPY_VERSION)
+static inline uint64_t PyThreadState_GetID(PyThreadState *tstate)
+{
+    assert(tstate != _Py_NULL);
+    return tstate->id;
+}
+#endif
+
+// bpo-43760 added PyThreadState_EnterTracing() to Python 3.11.0a2
+#if PY_VERSION_HEX < 0x030B00A2 && !defined(PYPY_VERSION)
+static inline void PyThreadState_EnterTracing(PyThreadState *tstate)
+{
+    tstate->tracing++;
+#if PY_VERSION_HEX >= 0x030A00A1
+    tstate->cframe->use_tracing = 0;
+#else
+    tstate->use_tracing = 0;
+#endif
+}
+#endif
+
+// bpo-43760 added PyThreadState_LeaveTracing() to Python 3.11.0a2
+#if PY_VERSION_HEX < 0x030B00A2 && !defined(PYPY_VERSION)
+static inline void PyThreadState_LeaveTracing(PyThreadState *tstate)
+{
+    int use_tracing = (tstate->c_tracefunc != _Py_NULL
+                       || tstate->c_profilefunc != _Py_NULL);
+    tstate->tracing--;
+#if PY_VERSION_HEX >= 0x030A00A1
+    tstate->cframe->use_tracing = use_tracing;
+#else
+    tstate->use_tracing = use_tracing;
+#endif
+}
+#endif
+
+
+// bpo-37194 added PyObject_CallNoArgs() to Python 3.9.0a1
+// PyObject_CallNoArgs() added to PyPy 3.9.16-v7.3.11
+#if !defined(PyObject_CallNoArgs) && PY_VERSION_HEX < 0x030900A1
+static inline PyObject* PyObject_CallNoArgs(PyObject *func)
+{
+    return PyObject_CallFunctionObjArgs(func, NULL);
+}
+#endif
+
+
+// bpo-39245 made PyObject_CallOneArg() public (previously called
+// _PyObject_CallOneArg) in Python 3.9.0a4
+// PyObject_CallOneArg() added to PyPy 3.9.16-v7.3.11
+#if !defined(PyObject_CallOneArg) && PY_VERSION_HEX < 0x030900A4
+static inline PyObject* PyObject_CallOneArg(PyObject *func, PyObject *arg)
+{
+    return PyObject_CallFunctionObjArgs(func, arg, NULL);
+}
+#endif
+
+
+// bpo-1635741 added PyModule_AddObjectRef() to Python 3.10.0a3
+#if PY_VERSION_HEX < 0x030A00A3
+static inline int
+PyModule_AddObjectRef(PyObject *module, const char *name, PyObject *value)
+{
+    int res;
+
+    if (!value && !PyErr_Occurred()) {
+        // PyModule_AddObject() raises TypeError in this case
+        PyErr_SetString(PyExc_SystemError,
+                        "PyModule_AddObjectRef() must be called "
+                        "with an exception raised if value is NULL");
+        return -1;
+    }
+
+    Py_XINCREF(value);
+    res = PyModule_AddObject(module, name, value);
+    if (res < 0) {
+        Py_XDECREF(value);
+    }
+    return res;
+}
+#endif
+
+
+// bpo-40024 added PyModule_AddType() to Python 3.9.0a5
+#if PY_VERSION_HEX < 0x030900A5
+static inline int PyModule_AddType(PyObject *module, PyTypeObject *type)
+{
+    const char *name, *dot;
+
+    if (PyType_Ready(type) < 0) {
+        return -1;
+    }
+
+    // inline _PyType_Name()
+    name = type->tp_name;
+    assert(name != _Py_NULL);
+    dot = strrchr(name, '.');
+    if (dot != _Py_NULL) {
+        name = dot + 1;
+    }
+
+    return PyModule_AddObjectRef(module, name, _PyObject_CAST(type));
+}
+#endif
+
+
+// bpo-40241 added PyObject_GC_IsTracked() to Python 3.9.0a6.
+// bpo-4688 added _PyObject_GC_IS_TRACKED() to Python 2.7.0a2.
+#if PY_VERSION_HEX < 0x030900A6 && !defined(PYPY_VERSION)
+static inline int PyObject_GC_IsTracked(PyObject* obj)
+{
+    return (PyObject_IS_GC(obj) && _PyObject_GC_IS_TRACKED(obj));
+}
+#endif
+
+// bpo-40241 added PyObject_GC_IsFinalized() to Python 3.9.0a6.
+// bpo-18112 added _PyGCHead_FINALIZED() to Python 3.4.0 final.
+#if PY_VERSION_HEX < 0x030900A6 && PY_VERSION_HEX >= 0x030400F0 && !defined(PYPY_VERSION)
+static inline int PyObject_GC_IsFinalized(PyObject *obj)
+{
+    PyGC_Head *gc = _Py_CAST(PyGC_Head*, obj) - 1;
+    return (PyObject_IS_GC(obj) && _PyGCHead_FINALIZED(gc));
+}
+#endif
+
+
+// bpo-39573 added Py_IS_TYPE() to Python 3.9.0a4
+#if PY_VERSION_HEX < 0x030900A4 && !defined(Py_IS_TYPE)
+static inline int _Py_IS_TYPE(PyObject *ob, PyTypeObject *type) {
+    return Py_TYPE(ob) == type;
+}
+#define Py_IS_TYPE(ob, type) _Py_IS_TYPE(_PyObject_CAST(ob), type)
+#endif
+
+
+// bpo-46906 added PyFloat_Pack2() and PyFloat_Unpack2() to Python 3.11a7.
+// bpo-11734 added _PyFloat_Pack2() and _PyFloat_Unpack2() to Python 3.6.0b1.
+// Python 3.11a2 moved _PyFloat_Pack2() and _PyFloat_Unpack2() to the internal
+// C API: Python 3.11a2-3.11a6 versions are not supported.
+#if 0x030600B1 <= PY_VERSION_HEX && PY_VERSION_HEX <= 0x030B00A1 && !defined(PYPY_VERSION)
+static inline int PyFloat_Pack2(double x, char *p, int le)
+{ return _PyFloat_Pack2(x, (unsigned char*)p, le); }
+
+static inline double PyFloat_Unpack2(const char *p, int le)
+{ return _PyFloat_Unpack2((const unsigned char *)p, le); }
+#endif
+
+
+// bpo-46906 added PyFloat_Pack4(), PyFloat_Pack8(), PyFloat_Unpack4() and
+// PyFloat_Unpack8() to Python 3.11a7.
+// Python 3.11a2 moved _PyFloat_Pack4(), _PyFloat_Pack8(), _PyFloat_Unpack4()
+// and _PyFloat_Unpack8() to the internal C API: Python 3.11a2-3.11a6 versions
+// are not supported.
+#if PY_VERSION_HEX <= 0x030B00A1 && !defined(PYPY_VERSION)
+static inline int PyFloat_Pack4(double x, char *p, int le)
+{ return _PyFloat_Pack4(x, (unsigned char*)p, le); }
+
+static inline int PyFloat_Pack8(double x, char *p, int le)
+{ return _PyFloat_Pack8(x, (unsigned char*)p, le); }
+
+static inline double PyFloat_Unpack4(const char *p, int le)
+{ return _PyFloat_Unpack4((const unsigned char *)p, le); }
+
+static inline double PyFloat_Unpack8(const char *p, int le)
+{ return _PyFloat_Unpack8((const unsigned char *)p, le); }
+#endif
+
+
+// gh-92154 added PyCode_GetCode() to Python 3.11.0b1
+#if PY_VERSION_HEX < 0x030B00B1 && !defined(PYPY_VERSION)
+static inline PyObject* PyCode_GetCode(PyCodeObject *code)
+{
+    return Py_NewRef(code->co_code);
+}
+#endif
+
+
+// gh-95008 added PyCode_GetVarnames() to Python 3.11.0rc1
+#if PY_VERSION_HEX < 0x030B00C1 && !defined(PYPY_VERSION)
+static inline PyObject* PyCode_GetVarnames(PyCodeObject *code)
+{
+    return Py_NewRef(code->co_varnames);
+}
+#endif
+
+// gh-95008 added PyCode_GetFreevars() to Python 3.11.0rc1
+#if PY_VERSION_HEX < 0x030B00C1 && !defined(PYPY_VERSION)
+static inline PyObject* PyCode_GetFreevars(PyCodeObject *code)
+{
+    return Py_NewRef(code->co_freevars);
+}
+#endif
+
+// gh-95008 added PyCode_GetCellvars() to Python 3.11.0rc1
+#if PY_VERSION_HEX < 0x030B00C1 && !defined(PYPY_VERSION)
+static inline PyObject* PyCode_GetCellvars(PyCodeObject *code)
+{
+    return Py_NewRef(code->co_cellvars);
+}
+#endif
+
+
+// Py_UNUSED() was added to Python 3.4.0b2.
+#if PY_VERSION_HEX < 0x030400B2 && !defined(Py_UNUSED)
+#  if defined(__GNUC__) || defined(__clang__)
+#    define Py_UNUSED(name) _unused_ ## name __attribute__((unused))
+#  else
+#    define Py_UNUSED(name) _unused_ ## name
+#  endif
+#endif
+
+
+// gh-105922 added PyImport_AddModuleRef() to Python 3.13.0a1
+#if PY_VERSION_HEX < 0x030D00A0
+static inline PyObject* PyImport_AddModuleRef(const char *name)
+{
+    return Py_XNewRef(PyImport_AddModule(name));
+}
+#endif
+
+
+// gh-105927 added PyWeakref_GetRef() to Python 3.13.0a1
+#if PY_VERSION_HEX < 0x030D0000
+static inline int PyWeakref_GetRef(PyObject *ref, PyObject **pobj)
+{
+    PyObject *obj;
+    if (ref != NULL && !PyWeakref_Check(ref)) {
+        *pobj = NULL;
+        PyErr_SetString(PyExc_TypeError, "expected a weakref");
+        return -1;
+    }
+    obj = PyWeakref_GetObject(ref);
+    if (obj == NULL) {
+        // SystemError if ref is NULL
+        *pobj = NULL;
+        return -1;
+    }
+    if (obj == Py_None) {
+        *pobj = NULL;
+        return 0;
+    }
+    *pobj = Py_NewRef(obj);
+    return (*pobj != NULL);
+}
+#endif
+
+
+// bpo-36974 added PY_VECTORCALL_ARGUMENTS_OFFSET to Python 3.8b1
+#ifndef PY_VECTORCALL_ARGUMENTS_OFFSET
+#  define PY_VECTORCALL_ARGUMENTS_OFFSET (_Py_CAST(size_t, 1) << (8 * sizeof(size_t) - 1))
+#endif
+
+// bpo-36974 added PyVectorcall_NARGS() to Python 3.8b1
+#if PY_VERSION_HEX < 0x030800B1
+static inline Py_ssize_t PyVectorcall_NARGS(size_t n)
+{
+    return n & ~PY_VECTORCALL_ARGUMENTS_OFFSET;
+}
+#endif
+
+
+// gh-105922 added PyObject_Vectorcall() to Python 3.9.0a4
+#if PY_VERSION_HEX < 0x030900A4
+static inline PyObject*
+PyObject_Vectorcall(PyObject *callable, PyObject *const *args,
+                     size_t nargsf, PyObject *kwnames)
+{
+#if PY_VERSION_HEX >= 0x030800B1 && !defined(PYPY_VERSION)
+    // bpo-36974 added _PyObject_Vectorcall() to Python 3.8.0b1
+    return _PyObject_Vectorcall(callable, args, nargsf, kwnames);
+#else
+    PyObject *posargs = NULL, *kwargs = NULL;
+    PyObject *res;
+    Py_ssize_t nposargs, nkwargs, i;
+
+    if (nargsf != 0 && args == NULL) {
+        PyErr_BadInternalCall();
+        goto error;
+    }
+    if (kwnames != NULL && !PyTuple_Check(kwnames)) {
+        PyErr_BadInternalCall();
+        goto error;
+    }
+
+    nposargs = (Py_ssize_t)PyVectorcall_NARGS(nargsf);
+    if (kwnames) {
+        nkwargs = PyTuple_GET_SIZE(kwnames);
+    }
+    else {
+        nkwargs = 0;
+    }
+
+    posargs = PyTuple_New(nposargs);
+    if (posargs == NULL) {
+        goto error;
+    }
+    if (nposargs) {
+        for (i=0; i < nposargs; i++) {
+            PyTuple_SET_ITEM(posargs, i, Py_NewRef(*args));
+            args++;
+        }
+    }
+
+    if (nkwargs) {
+        kwargs = PyDict_New();
+        if (kwargs == NULL) {
+            goto error;
+        }
+
+        for (i = 0; i < nkwargs; i++) {
+            PyObject *key = PyTuple_GET_ITEM(kwnames, i);
+            PyObject *value = *args;
+            args++;
+            if (PyDict_SetItem(kwargs, key, value) < 0) {
+                goto error;
+            }
+        }
+    }
+    else {
+        kwargs = NULL;
+    }
+
+    res = PyObject_Call(callable, posargs, kwargs);
+    Py_DECREF(posargs);
+    Py_XDECREF(kwargs);
+    return res;
+
+error:
+    Py_DECREF(posargs);
+    Py_XDECREF(kwargs);
+    return NULL;
+#endif
+}
+#endif
+
+
+// gh-106521 added PyObject_GetOptionalAttr() and
+// PyObject_GetOptionalAttrString() to Python 3.13.0a1
+#if PY_VERSION_HEX < 0x030D00A1
+static inline int
+PyObject_GetOptionalAttr(PyObject *obj, PyObject *attr_name, PyObject **result)
+{
+    // bpo-32571 added _PyObject_LookupAttr() to Python 3.7.0b1
+#if PY_VERSION_HEX >= 0x030700B1 && !defined(PYPY_VERSION)
+    return _PyObject_LookupAttr(obj, attr_name, result);
+#else
+    *result = PyObject_GetAttr(obj, attr_name);
+    if (*result != NULL) {
+        return 1;
+    }
+    if (!PyErr_Occurred()) {
+        return 0;
+    }
+    if (PyErr_ExceptionMatches(PyExc_AttributeError)) {
+        PyErr_Clear();
+        return 0;
+    }
+    return -1;
+#endif
+}
+
+static inline int
+PyObject_GetOptionalAttrString(PyObject *obj, const char *attr_name, PyObject **result)
+{
+    PyObject *name_obj;
+    int rc;
+#if PY_VERSION_HEX >= 0x03000000
+    name_obj = PyUnicode_FromString(attr_name);
+#else
+    name_obj = PyString_FromString(attr_name);
+#endif
+    if (name_obj == NULL) {
+        *result = NULL;
+        return -1;
+    }
+    rc = PyObject_GetOptionalAttr(obj, name_obj, result);
+    Py_DECREF(name_obj);
+    return rc;
+}
+#endif
+
+
+// gh-106307 added PyObject_GetOptionalAttr() and
+// PyMapping_GetOptionalItemString() to Python 3.13.0a1
+#if PY_VERSION_HEX < 0x030D00A1
+static inline int
+PyMapping_GetOptionalItem(PyObject *obj, PyObject *key, PyObject **result)
+{
+    *result = PyObject_GetItem(obj, key);
+    if (*result) {
+        return 1;
+    }
+    if (!PyErr_ExceptionMatches(PyExc_KeyError)) {
+        return -1;
+    }
+    PyErr_Clear();
+    return 0;
+}
+
+static inline int
+PyMapping_GetOptionalItemString(PyObject *obj, const char *key, PyObject **result)
+{
+    PyObject *key_obj;
+    int rc;
+#if PY_VERSION_HEX >= 0x03000000
+    key_obj = PyUnicode_FromString(key);
+#else
+    key_obj = PyString_FromString(key);
+#endif
+    if (key_obj == NULL) {
+        *result = NULL;
+        return -1;
+    }
+    rc = PyMapping_GetOptionalItem(obj, key_obj, result);
+    Py_DECREF(key_obj);
+    return rc;
+}
+#endif
+
+// gh-108511 added PyMapping_HasKeyWithError() and
+// PyMapping_HasKeyStringWithError() to Python 3.13.0a1
+#if PY_VERSION_HEX < 0x030D00A1
+static inline int
+PyMapping_HasKeyWithError(PyObject *obj, PyObject *key)
+{
+    PyObject *res;
+    int rc = PyMapping_GetOptionalItem(obj, key, &res);
+    Py_XDECREF(res);
+    return rc;
+}
+
+static inline int
+PyMapping_HasKeyStringWithError(PyObject *obj, const char *key)
+{
+    PyObject *res;
+    int rc = PyMapping_GetOptionalItemString(obj, key, &res);
+    Py_XDECREF(res);
+    return rc;
+}
+#endif
+
+
+// gh-108511 added PyObject_HasAttrWithError() and
+// PyObject_HasAttrStringWithError() to Python 3.13.0a1
+#if PY_VERSION_HEX < 0x030D00A1
+static inline int
+PyObject_HasAttrWithError(PyObject *obj, PyObject *attr)
+{
+    PyObject *res;
+    int rc = PyObject_GetOptionalAttr(obj, attr, &res);
+    Py_XDECREF(res);
+    return rc;
+}
+
+static inline int
+PyObject_HasAttrStringWithError(PyObject *obj, const char *attr)
+{
+    PyObject *res;
+    int rc = PyObject_GetOptionalAttrString(obj, attr, &res);
+    Py_XDECREF(res);
+    return rc;
+}
+#endif
+
+
+// gh-106004 added PyDict_GetItemRef() and PyDict_GetItemStringRef()
+// to Python 3.13.0a1
+#if PY_VERSION_HEX < 0x030D00A1
+static inline int
+PyDict_GetItemRef(PyObject *mp, PyObject *key, PyObject **result)
+{
+#if PY_VERSION_HEX >= 0x03000000
+    PyObject *item = PyDict_GetItemWithError(mp, key);
+#else
+    PyObject *item = _PyDict_GetItemWithError(mp, key);
+#endif
+    if (item != NULL) {
+        *result = Py_NewRef(item);
+        return 1;  // found
+    }
+    if (!PyErr_Occurred()) {
+        *result = NULL;
+        return 0;  // not found
+    }
+    *result = NULL;
+    return -1;
+}
+
+static inline int
+PyDict_GetItemStringRef(PyObject *mp, const char *key, PyObject **result)
+{
+    int res;
+#if PY_VERSION_HEX >= 0x03000000
+    PyObject *key_obj = PyUnicode_FromString(key);
+#else
+    PyObject *key_obj = PyString_FromString(key);
+#endif
+    if (key_obj == NULL) {
+        *result = NULL;
+        return -1;
+    }
+    res = PyDict_GetItemRef(mp, key_obj, result);
+    Py_DECREF(key_obj);
+    return res;
+}
+#endif
+
+
+// gh-106307 added PyModule_Add() to Python 3.13.0a1
+#if PY_VERSION_HEX < 0x030D00A1
+static inline int
+PyModule_Add(PyObject *mod, const char *name, PyObject *value)
+{
+    int res = PyModule_AddObjectRef(mod, name, value);
+    Py_XDECREF(value);
+    return res;
+}
+#endif
+
+
+// gh-108014 added Py_IsFinalizing() to Python 3.13.0a1
+// bpo-1856 added _Py_Finalizing to Python 3.2.1b1.
+// _Py_IsFinalizing() was added to PyPy 7.3.0.
+#if (0x030201B1 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x030D00A1) \
+        && (!defined(PYPY_VERSION_NUM) || PYPY_VERSION_NUM >= 0x7030000)
+static inline int Py_IsFinalizing(void)
+{
+#if PY_VERSION_HEX >= 0x030700A1
+    // _Py_IsFinalizing() was added to Python 3.7.0a1.
+    return _Py_IsFinalizing();
+#else
+    return (_Py_Finalizing != NULL);
+#endif
+}
+#endif
+
+
+// gh-108323 added PyDict_ContainsString() to Python 3.13.0a1
+#if PY_VERSION_HEX < 0x030D00A1
+static inline int PyDict_ContainsString(PyObject *op, const char *key)
+{
+    PyObject *key_obj = PyUnicode_FromString(key);
+    if (key_obj == NULL) {
+        return -1;
+    }
+    int res = PyDict_Contains(op, key_obj);
+    Py_DECREF(key_obj);
+    return res;
+}
+#endif
+
+
+// gh-108445 added PyLong_AsInt() to Python 3.13.0a1
+#if PY_VERSION_HEX < 0x030D00A1
+static inline int PyLong_AsInt(PyObject *obj)
+{
+#ifdef PYPY_VERSION
+    long value = PyLong_AsLong(obj);
+    if (value == -1 && PyErr_Occurred()) {
+        return -1;
+    }
+    if (value < (long)INT_MIN || (long)INT_MAX < value) {
+        PyErr_SetString(PyExc_OverflowError,
+                        "Python int too large to convert to C int");
+        return -1;
+    }
+    return (int)value;
+#else
+    return _PyLong_AsInt(obj);
+#endif
+}
+#endif
+
+
+// gh-107073 added PyObject_VisitManagedDict() to Python 3.13.0a1
+#if PY_VERSION_HEX < 0x030D00A1
+static inline int
+PyObject_VisitManagedDict(PyObject *obj, visitproc visit, void *arg)
+{
+    PyObject **dict = _PyObject_GetDictPtr(obj);
+    if (*dict == NULL) {
+        return -1;
+    }
+    Py_VISIT(*dict);
+    return 0;
+}
+
+static inline void
+PyObject_ClearManagedDict(PyObject *obj)
+{
+    PyObject **dict = _PyObject_GetDictPtr(obj);
+    if (*dict == NULL) {
+        return;
+    }
+    Py_CLEAR(*dict);
+}
+#endif
+
+// gh-108867 added PyThreadState_GetUnchecked() to Python 3.13.0a1
+// Python 3.5.2 added _PyThreadState_UncheckedGet().
+#if PY_VERSION_HEX >= 0x03050200 && PY_VERSION_HEX < 0x030D00A1
+static inline PyThreadState*
+PyThreadState_GetUnchecked(void)
+{
+    return _PyThreadState_UncheckedGet();
+}
+#endif
+
+// gh-110289 added PyUnicode_EqualToUTF8() and PyUnicode_EqualToUTF8AndSize()
+// to Python 3.13.0a1
+#if PY_VERSION_HEX < 0x030D00A1
+static inline int
+PyUnicode_EqualToUTF8AndSize(PyObject *unicode, const char *str, Py_ssize_t str_len)
+{
+    Py_ssize_t len;
+    const void *utf8;
+    PyObject *exc_type, *exc_value, *exc_tb;
+    int res;
+
+    // API cannot report errors so save/restore the exception
+    PyErr_Fetch(&exc_type, &exc_value, &exc_tb);
+
+    // Python 3.3.0a1 added PyUnicode_AsUTF8AndSize()
+#if PY_VERSION_HEX >= 0x030300A1
+    if (PyUnicode_IS_ASCII(unicode)) {
+        utf8 = PyUnicode_DATA(unicode);
+        len = PyUnicode_GET_LENGTH(unicode);
+    }
+    else {
+        utf8 = PyUnicode_AsUTF8AndSize(unicode, &len);
+        if (utf8 == NULL) {
+            // Memory allocation failure. The API cannot report error,
+            // so ignore the exception and return 0.
+            res = 0;
+            goto done;
+        }
+    }
+
+    if (len != str_len) {
+        res = 0;
+        goto done;
+    }
+    res = (memcmp(utf8, str, (size_t)len) == 0);
+#else
+    PyObject *bytes = PyUnicode_AsUTF8String(unicode);
+    if (bytes == NULL) {
+        // Memory allocation failure. The API cannot report error,
+        // so ignore the exception and return 0.
+        res = 0;
+        goto done;
+    }
+
+#if PY_VERSION_HEX >= 0x03000000
+    len = PyBytes_GET_SIZE(bytes);
+    utf8 = PyBytes_AS_STRING(bytes);
+#else
+    len = PyString_GET_SIZE(bytes);
+    utf8 = PyString_AS_STRING(bytes);
+#endif
+    if (len != str_len) {
+        Py_DECREF(bytes);
+        res = 0;
+        goto done;
+    }
+
+    res = (memcmp(utf8, str, (size_t)len) == 0);
+    Py_DECREF(bytes);
+#endif
+
+done:
+    PyErr_Restore(exc_type, exc_value, exc_tb);
+    return res;
+}
+
+static inline int
+PyUnicode_EqualToUTF8(PyObject *unicode, const char *str)
+{
+    return PyUnicode_EqualToUTF8AndSize(unicode, str, (Py_ssize_t)strlen(str));
+}
+#endif
+
+
+// gh-111138 added PyList_Extend() and PyList_Clear() to Python 3.13.0a2
+#if PY_VERSION_HEX < 0x030D00A2
+static inline int
+PyList_Extend(PyObject *list, PyObject *iterable)
+{
+    return PyList_SetSlice(list, PY_SSIZE_T_MAX, PY_SSIZE_T_MAX, iterable);
+}
+
+static inline int
+PyList_Clear(PyObject *list)
+{
+    return PyList_SetSlice(list, 0, PY_SSIZE_T_MAX, NULL);
+}
+#endif
+
+// gh-111262 added PyDict_Pop() and PyDict_PopString() to Python 3.13.0a2
+#if PY_VERSION_HEX < 0x030D00A2
+static inline int
+PyDict_Pop(PyObject *dict, PyObject *key, PyObject **result)
+{
+    PyObject *value;
+
+    if (!PyDict_Check(dict)) {
+        PyErr_BadInternalCall();
+        if (result) {
+            *result = NULL;
+        }
+        return -1;
+    }
+
+    // bpo-16991 added _PyDict_Pop() to Python 3.5.0b2.
+    // Python 3.6.0b3 changed _PyDict_Pop() first argument type to PyObject*.
+    // Python 3.13.0a1 removed _PyDict_Pop().
+#if defined(PYPY_VERSION) || PY_VERSION_HEX < 0x030500b2 || PY_VERSION_HEX >= 0x030D0000
+    value = PyObject_CallMethod(dict, "pop", "O", key);
+#elif PY_VERSION_HEX < 0x030600b3
+    value = _PyDict_Pop(_Py_CAST(PyDictObject*, dict), key, NULL);
+#else
+    value = _PyDict_Pop(dict, key, NULL);
+#endif
+    if (value == NULL) {
+        if (result) {
+            *result = NULL;
+        }
+        if (PyErr_Occurred() && !PyErr_ExceptionMatches(PyExc_KeyError)) {
+            return -1;
+        }
+        PyErr_Clear();
+        return 0;
+    }
+    if (result) {
+        *result = value;
+    }
+    else {
+        Py_DECREF(value);
+    }
+    return 1;
+}
+
+static inline int
+PyDict_PopString(PyObject *dict, const char *key, PyObject **result)
+{
+    PyObject *key_obj = PyUnicode_FromString(key);
+    if (key_obj == NULL) {
+        if (result != NULL) {
+            *result = NULL;
+        }
+        return -1;
+    }
+
+    int res = PyDict_Pop(dict, key_obj, result);
+    Py_DECREF(key_obj);
+    return res;
+}
+#endif
+
+
+#if PY_VERSION_HEX < 0x030200A4
+// Python 3.2.0a4 added Py_hash_t type
+typedef Py_ssize_t Py_hash_t;
+#endif
+
+
+// gh-111545 added Py_HashPointer() to Python 3.13.0a3
+#if PY_VERSION_HEX < 0x030D00A3
+static inline Py_hash_t Py_HashPointer(const void *ptr)
+{
+#if PY_VERSION_HEX >= 0x030900A4 && !defined(PYPY_VERSION)
+    return _Py_HashPointer(ptr);
+#else
+    return _Py_HashPointer(_Py_CAST(void*, ptr));
+#endif
+}
+#endif
+
+
+// Python 3.13a4 added a PyTime API.
+// Use the private API added to Python 3.5.
+#if PY_VERSION_HEX < 0x030D00A4 && PY_VERSION_HEX  >= 0x03050000
+typedef _PyTime_t PyTime_t;
+#define PyTime_MIN _PyTime_MIN
+#define PyTime_MAX _PyTime_MAX
+
+static inline double PyTime_AsSecondsDouble(PyTime_t t)
+{ return _PyTime_AsSecondsDouble(t); }
+
+static inline int PyTime_Monotonic(PyTime_t *result)
+{ return _PyTime_GetMonotonicClockWithInfo(result, NULL); }
+
+static inline int PyTime_Time(PyTime_t *result)
+{ return _PyTime_GetSystemClockWithInfo(result, NULL); }
+
+static inline int PyTime_PerfCounter(PyTime_t *result)
+{
+#if PY_VERSION_HEX >= 0x03070000 && !defined(PYPY_VERSION)
+    return _PyTime_GetPerfCounterWithInfo(result, NULL);
+#elif PY_VERSION_HEX >= 0x03070000
+    // Call time.perf_counter_ns() and convert Python int object to PyTime_t.
+    // Cache time.perf_counter_ns() function for best performance.
+    static PyObject *func = NULL;
+    if (func == NULL) {
+        PyObject *mod = PyImport_ImportModule("time");
+        if (mod == NULL) {
+            return -1;
+        }
+
+        func = PyObject_GetAttrString(mod, "perf_counter_ns");
+        Py_DECREF(mod);
+        if (func == NULL) {
+            return -1;
+        }
+    }
+
+    PyObject *res = PyObject_CallNoArgs(func);
+    if (res == NULL) {
+        return -1;
+    }
+    long long value = PyLong_AsLongLong(res);
+    Py_DECREF(res);
+
+    if (value == -1 && PyErr_Occurred()) {
+        return -1;
+    }
+
+    Py_BUILD_ASSERT(sizeof(value) >= sizeof(PyTime_t));
+    *result = (PyTime_t)value;
+    return 0;
+#else
+    // Call time.perf_counter() and convert C double to PyTime_t.
+    // Cache time.perf_counter() function for best performance.
+    static PyObject *func = NULL;
+    if (func == NULL) {
+        PyObject *mod = PyImport_ImportModule("time");
+        if (mod == NULL) {
+            return -1;
+        }
+
+        func = PyObject_GetAttrString(mod, "perf_counter");
+        Py_DECREF(mod);
+        if (func == NULL) {
+            return -1;
+        }
+    }
+
+    PyObject *res = PyObject_CallNoArgs(func);
+    if (res == NULL) {
+        return -1;
+    }
+    double d = PyFloat_AsDouble(res);
+    Py_DECREF(res);
+
+    if (d == -1.0 && PyErr_Occurred()) {
+        return -1;
+    }
+
+    // Avoid floor() to avoid having to link to libm
+    *result = (PyTime_t)(d * 1e9);
+    return 0;
+#endif
+}
+
+#endif
+
+// gh-111389 added hash constants to Python 3.13.0a5. These constants were
+// added first as private macros to Python 3.4.0b1 and PyPy 7.3.9.
+#if (!defined(PyHASH_BITS) \
+     && ((!defined(PYPY_VERSION) && PY_VERSION_HEX >= 0x030400B1) \
+         || (defined(PYPY_VERSION) && PY_VERSION_HEX >= 0x03070000 \
+             && PYPY_VERSION_NUM >= 0x07090000)))
+#  define PyHASH_BITS _PyHASH_BITS
+#  define PyHASH_MODULUS _PyHASH_MODULUS
+#  define PyHASH_INF _PyHASH_INF
+#  define PyHASH_IMAG _PyHASH_IMAG
+#endif
+
+
+// gh-111545 added Py_GetConstant() and Py_GetConstantBorrowed()
+// to Python 3.13.0a6
+#if PY_VERSION_HEX < 0x030D00A6 && !defined(Py_CONSTANT_NONE)
+
+#define Py_CONSTANT_NONE 0
+#define Py_CONSTANT_FALSE 1
+#define Py_CONSTANT_TRUE 2
+#define Py_CONSTANT_ELLIPSIS 3
+#define Py_CONSTANT_NOT_IMPLEMENTED 4
+#define Py_CONSTANT_ZERO 5
+#define Py_CONSTANT_ONE 6
+#define Py_CONSTANT_EMPTY_STR 7
+#define Py_CONSTANT_EMPTY_BYTES 8
+#define Py_CONSTANT_EMPTY_TUPLE 9
+
+static inline PyObject* Py_GetConstant(unsigned int constant_id)
+{
+    static PyObject* constants[Py_CONSTANT_EMPTY_TUPLE + 1] = {NULL};
+
+    if (constants[Py_CONSTANT_NONE] == NULL) {
+        constants[Py_CONSTANT_NONE] = Py_None;
+        constants[Py_CONSTANT_FALSE] = Py_False;
+        constants[Py_CONSTANT_TRUE] = Py_True;
+        constants[Py_CONSTANT_ELLIPSIS] = Py_Ellipsis;
+        constants[Py_CONSTANT_NOT_IMPLEMENTED] = Py_NotImplemented;
+
+        constants[Py_CONSTANT_ZERO] = PyLong_FromLong(0);
+        if (constants[Py_CONSTANT_ZERO] == NULL) {
+            goto fatal_error;
+        }
+
+        constants[Py_CONSTANT_ONE] = PyLong_FromLong(1);
+        if (constants[Py_CONSTANT_ONE] == NULL) {
+            goto fatal_error;
+        }
+
+        constants[Py_CONSTANT_EMPTY_STR] = PyUnicode_FromStringAndSize("", 0);
+        if (constants[Py_CONSTANT_EMPTY_STR] == NULL) {
+            goto fatal_error;
+        }
+
+        constants[Py_CONSTANT_EMPTY_BYTES] = PyBytes_FromStringAndSize("", 0);
+        if (constants[Py_CONSTANT_EMPTY_BYTES] == NULL) {
+            goto fatal_error;
+        }
+
+        constants[Py_CONSTANT_EMPTY_TUPLE] = PyTuple_New(0);
+        if (constants[Py_CONSTANT_EMPTY_TUPLE] == NULL) {
+            goto fatal_error;
+        }
+        // goto dance to avoid compiler warnings about Py_FatalError()
+        goto init_done;
+
+fatal_error:
+        // This case should never happen
+        Py_FatalError("Py_GetConstant() failed to get constants");
+    }
+
+init_done:
+    if (constant_id <= Py_CONSTANT_EMPTY_TUPLE) {
+        return Py_NewRef(constants[constant_id]);
+    }
+    else {
+        PyErr_BadInternalCall();
+        return NULL;
+    }
+}
+
+static inline PyObject* Py_GetConstantBorrowed(unsigned int constant_id)
+{
+    PyObject *obj = Py_GetConstant(constant_id);
+    Py_XDECREF(obj);
+    return obj;
+}
+#endif
+
+
+// gh-114329 added PyList_GetItemRef() to Python 3.13.0a4
+#if PY_VERSION_HEX < 0x030D00A4
+static inline PyObject *
+PyList_GetItemRef(PyObject *op, Py_ssize_t index)
+{
+    PyObject *item = PyList_GetItem(op, index);
+    Py_XINCREF(item);
+    return item;
+}
+#endif
+
+
+// gh-114329 added PyList_GetItemRef() to Python 3.13.0a4
+#if PY_VERSION_HEX < 0x030D00A4
+static inline int
+PyDict_SetDefaultRef(PyObject *d, PyObject *key, PyObject *default_value,
+                     PyObject **result)
+{
+    PyObject *value;
+    if (PyDict_GetItemRef(d, key, &value) < 0) {
+        // get error
+        if (result) {
+            *result = NULL;
+        }
+        return -1;
+    }
+    if (value != NULL) {
+        // present
+        if (result) {
+            *result = value;
+        }
+        else {
+            Py_DECREF(value);
+        }
+        return 1;
+    }
+
+    // missing: set the item
+    if (PyDict_SetItem(d, key, default_value) < 0) {
+        // set error
+        if (result) {
+            *result = NULL;
+        }
+        return -1;
+    }
+    if (result) {
+        *result = Py_NewRef(default_value);
+    }
+    return 0;
+}
+#endif
+
+#if PY_VERSION_HEX < 0x030D00B3
+#  define Py_BEGIN_CRITICAL_SECTION(op) {
+#  define Py_END_CRITICAL_SECTION() }
+#  define Py_BEGIN_CRITICAL_SECTION2(a, b) {
+#  define Py_END_CRITICAL_SECTION2() }
+#endif
+
+#if PY_VERSION_HEX < 0x030E0000 && PY_VERSION_HEX >= 0x03060000 && !defined(PYPY_VERSION)
+typedef struct PyUnicodeWriter PyUnicodeWriter;
+
+static inline void PyUnicodeWriter_Discard(PyUnicodeWriter *writer)
+{
+    _PyUnicodeWriter_Dealloc((_PyUnicodeWriter*)writer);
+    PyMem_Free(writer);
+}
+
+static inline PyUnicodeWriter* PyUnicodeWriter_Create(Py_ssize_t length)
+{
+    if (length < 0) {
+        PyErr_SetString(PyExc_ValueError,
+                        "length must be positive");
+        return NULL;
+    }
+
+    const size_t size = sizeof(_PyUnicodeWriter);
+    PyUnicodeWriter *pub_writer = (PyUnicodeWriter *)PyMem_Malloc(size);
+    if (pub_writer == _Py_NULL) {
+        PyErr_NoMemory();
+        return _Py_NULL;
+    }
+    _PyUnicodeWriter *writer = (_PyUnicodeWriter *)pub_writer;
+
+    _PyUnicodeWriter_Init(writer);
+    if (_PyUnicodeWriter_Prepare(writer, length, 127) < 0) {
+        PyUnicodeWriter_Discard(pub_writer);
+        return NULL;
+    }
+    writer->overallocate = 1;
+    return pub_writer;
+}
+
+static inline PyObject* PyUnicodeWriter_Finish(PyUnicodeWriter *writer)
+{
+    PyObject *str = _PyUnicodeWriter_Finish((_PyUnicodeWriter*)writer);
+    assert(((_PyUnicodeWriter*)writer)->buffer == NULL);
+    PyMem_Free(writer);
+    return str;
+}
+
+static inline int
+PyUnicodeWriter_WriteChar(PyUnicodeWriter *writer, Py_UCS4 ch)
+{
+    if (ch > 0x10ffff) {
+        PyErr_SetString(PyExc_ValueError,
+                        "character must be in range(0x110000)");
+        return -1;
+    }
+
+    return _PyUnicodeWriter_WriteChar((_PyUnicodeWriter*)writer, ch);
+}
+
+static inline int
+PyUnicodeWriter_WriteStr(PyUnicodeWriter *writer, PyObject *obj)
+{
+    PyObject *str = PyObject_Str(obj);
+    if (str == NULL) {
+        return -1;
+    }
+
+    int res = _PyUnicodeWriter_WriteStr((_PyUnicodeWriter*)writer, str);
+    Py_DECREF(str);
+    return res;
+}
+
+static inline int
+PyUnicodeWriter_WriteRepr(PyUnicodeWriter *writer, PyObject *obj)
+{
+    PyObject *str = PyObject_Repr(obj);
+    if (str == NULL) {
+        return -1;
+    }
+
+    int res = _PyUnicodeWriter_WriteStr((_PyUnicodeWriter*)writer, str);
+    Py_DECREF(str);
+    return res;
+}
+
+static inline int
+PyUnicodeWriter_WriteUTF8(PyUnicodeWriter *writer,
+                          const char *str, Py_ssize_t size)
+{
+    if (size < 0) {
+        size = (Py_ssize_t)strlen(str);
+    }
+
+    PyObject *str_obj = PyUnicode_FromStringAndSize(str, size);
+    if (str_obj == _Py_NULL) {
+        return -1;
+    }
+
+    int res = _PyUnicodeWriter_WriteStr((_PyUnicodeWriter*)writer, str_obj);
+    Py_DECREF(str_obj);
+    return res;
+}
+
+static inline int
+PyUnicodeWriter_WriteWideChar(PyUnicodeWriter *writer,
+                              const wchar_t *str, Py_ssize_t size)
+{
+    if (size < 0) {
+        size = (Py_ssize_t)wcslen(str);
+    }
+
+    PyObject *str_obj = PyUnicode_FromWideChar(str, size);
+    if (str_obj == _Py_NULL) {
+        return -1;
+    }
+
+    int res = _PyUnicodeWriter_WriteStr((_PyUnicodeWriter*)writer, str_obj);
+    Py_DECREF(str_obj);
+    return res;
+}
+
+static inline int
+PyUnicodeWriter_WriteSubstring(PyUnicodeWriter *writer, PyObject *str,
+                               Py_ssize_t start, Py_ssize_t end)
+{
+    if (!PyUnicode_Check(str)) {
+        PyErr_Format(PyExc_TypeError, "expect str, not %T", str);
+        return -1;
+    }
+    if (start < 0 || start > end) {
+        PyErr_Format(PyExc_ValueError, "invalid start argument");
+        return -1;
+    }
+    if (end > PyUnicode_GET_LENGTH(str)) {
+        PyErr_Format(PyExc_ValueError, "invalid end argument");
+        return -1;
+    }
+
+    return _PyUnicodeWriter_WriteSubstring((_PyUnicodeWriter*)writer, str,
+                                           start, end);
+}
+
+static inline int
+PyUnicodeWriter_Format(PyUnicodeWriter *writer, const char *format, ...)
+{
+    va_list vargs;
+    va_start(vargs, format);
+    PyObject *str = PyUnicode_FromFormatV(format, vargs);
+    va_end(vargs);
+    if (str == _Py_NULL) {
+        return -1;
+    }
+
+    int res = _PyUnicodeWriter_WriteStr((_PyUnicodeWriter*)writer, str);
+    Py_DECREF(str);
+    return res;
+}
+#endif  // PY_VERSION_HEX < 0x030E0000
+
+// gh-116560 added PyLong_GetSign() to Python 3.14.0a0
+#if PY_VERSION_HEX < 0x030E00A0
+static inline int PyLong_GetSign(PyObject *obj, int *sign)
+{
+    if (!PyLong_Check(obj)) {
+        PyErr_Format(PyExc_TypeError, "expect int, got %s", Py_TYPE(obj)->tp_name);
+        return -1;
+    }
+
+    *sign = _PyLong_Sign(obj);
+    return 0;
+}
+#endif
+
+
+// gh-124502 added PyUnicode_Equal() to Python 3.14.0a0
+#if PY_VERSION_HEX < 0x030E00A0
+static inline int PyUnicode_Equal(PyObject *str1, PyObject *str2)
+{
+    if (!PyUnicode_Check(str1)) {
+        PyErr_Format(PyExc_TypeError, "first argument must be str, not %s",
+                     Py_TYPE(str1)->tp_name);
+        return -1;
+    }
+    if (!PyUnicode_Check(str2)) {
+        PyErr_Format(PyExc_TypeError, "second argument must be str, not %s",
+                     Py_TYPE(str2)->tp_name);
+        return -1;
+    }
+
+#if PY_VERSION_HEX >= 0x030d0000 && !defined(PYPY_VERSION)
+    PyAPI_FUNC(int) _PyUnicode_Equal(PyObject *str1, PyObject *str2);
+
+    return _PyUnicode_Equal(str1, str2);
+#elif PY_VERSION_HEX >= 0x03060000 && !defined(PYPY_VERSION)
+    return _PyUnicode_EQ(str1, str2);
+#elif PY_VERSION_HEX >= 0x03090000 && defined(PYPY_VERSION)
+    return _PyUnicode_EQ(str1, str2);
+#else
+    return (PyUnicode_Compare(str1, str2) == 0);
+#endif
+}
+#endif
+
+
+// gh-121645 added PyBytes_Join() to Python 3.14.0a0
+#if PY_VERSION_HEX < 0x030E00A0
+static inline PyObject* PyBytes_Join(PyObject *sep, PyObject *iterable)
+{
+    return _PyBytes_Join(sep, iterable);
+}
+#endif
+
+
+#if PY_VERSION_HEX < 0x030E00A0
+static inline Py_hash_t Py_HashBuffer(const void *ptr, Py_ssize_t len)
+{
+#if PY_VERSION_HEX >= 0x03000000 && !defined(PYPY_VERSION)
+    PyAPI_FUNC(Py_hash_t) _Py_HashBytes(const void *src, Py_ssize_t len);
+
+    return _Py_HashBytes(ptr, len);
+#else
+    Py_hash_t hash;
+    PyObject *bytes = PyBytes_FromStringAndSize((const char*)ptr, len);
+    if (bytes == NULL) {
+        return -1;
+    }
+    hash = PyObject_Hash(bytes);
+    Py_DECREF(bytes);
+    return hash;
+#endif
+}
+#endif
+
+
+#if PY_VERSION_HEX < 0x030E00A0
+static inline int PyIter_NextItem(PyObject *iter, PyObject **item)
+{
+    iternextfunc tp_iternext;
+
+    assert(iter != NULL);
+    assert(item != NULL);
+
+    tp_iternext = Py_TYPE(iter)->tp_iternext;
+    if (tp_iternext == NULL) {
+        *item = NULL;
+        PyErr_Format(PyExc_TypeError, "expected an iterator, got '%s'",
+                     Py_TYPE(iter)->tp_name);
+        return -1;
+    }
+
+    if ((*item = tp_iternext(iter))) {
+        return 1;
+    }
+    if (!PyErr_Occurred()) {
+        return 0;
+    }
+    if (PyErr_ExceptionMatches(PyExc_StopIteration)) {
+        PyErr_Clear();
+        return 0;
+    }
+    return -1;
+}
+#endif
+
+
+#if PY_VERSION_HEX < 0x030E00A0
+static inline PyObject* PyLong_FromInt32(int32_t value)
+{
+    Py_BUILD_ASSERT(sizeof(long) >= 4);
+    return PyLong_FromLong(value);
+}
+
+static inline PyObject* PyLong_FromInt64(int64_t value)
+{
+    Py_BUILD_ASSERT(sizeof(long long) >= 8);
+    return PyLong_FromLongLong(value);
+}
+
+static inline PyObject* PyLong_FromUInt32(uint32_t value)
+{
+    Py_BUILD_ASSERT(sizeof(unsigned long) >= 4);
+    return PyLong_FromUnsignedLong(value);
+}
+
+static inline PyObject* PyLong_FromUInt64(uint64_t value)
+{
+    Py_BUILD_ASSERT(sizeof(unsigned long long) >= 8);
+    return PyLong_FromUnsignedLongLong(value);
+}
+
+static inline int PyLong_AsInt32(PyObject *obj, int32_t *pvalue)
+{
+    Py_BUILD_ASSERT(sizeof(int) == 4);
+    int value = PyLong_AsInt(obj);
+    if (value == -1 && PyErr_Occurred()) {
+        return -1;
+    }
+    *pvalue = (int32_t)value;
+    return 0;
+}
+
+static inline int PyLong_AsInt64(PyObject *obj, int64_t *pvalue)
+{
+    Py_BUILD_ASSERT(sizeof(long long) == 8);
+    long long value = PyLong_AsLongLong(obj);
+    if (value == -1 && PyErr_Occurred()) {
+        return -1;
+    }
+    *pvalue = (int64_t)value;
+    return 0;
+}
+
+static inline int PyLong_AsUInt32(PyObject *obj, uint32_t *pvalue)
+{
+    Py_BUILD_ASSERT(sizeof(long) >= 4);
+    unsigned long value = PyLong_AsUnsignedLong(obj);
+    if (value == (unsigned long)-1 && PyErr_Occurred()) {
+        return -1;
+    }
+#if SIZEOF_LONG > 4
+    if ((unsigned long)UINT32_MAX < value) {
+        PyErr_SetString(PyExc_OverflowError,
+                        "Python int too large to convert to C uint32_t");
+        return -1;
+    }
+#endif
+    *pvalue = (uint32_t)value;
+    return 0;
+}
+
+static inline int PyLong_AsUInt64(PyObject *obj, uint64_t *pvalue)
+{
+    Py_BUILD_ASSERT(sizeof(long long) == 8);
+    unsigned long long value = PyLong_AsUnsignedLongLong(obj);
+    if (value == (unsigned long long)-1 && PyErr_Occurred()) {
+        return -1;
+    }
+    *pvalue = (uint64_t)value;
+    return 0;
+}
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif  // PYTHONCAPI_COMPAT
diff --git a/tox.ini b/tox.ini
index a79089f51..e79d88500 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,11 +3,10 @@ requires =
     tox>=4.2
 env_list =
     lint
-    py{py3, 311, 310, 39, 38}
+    py{py3, 313, 312, 311, 310, 39}
 
 [testenv]
 deps =
-    cffi
     numpy
 extras =
     tests
@@ -29,3 +28,12 @@ pass_env =
 commands =
     pre-commit run --all-files --show-diff-on-failure
     check-manifest
+
+[testenv:mypy]
+skip_install = true
+deps =
+    -r .ci/requirements-mypy.txt
+extras =
+    typing
+commands =
+    mypy conftest.py selftest.py setup.py docs src winbuild Tests {posargs}
diff --git a/wheels/README.md b/wheels/README.md
new file mode 100644
index 000000000..1175616e1
--- /dev/null
+++ b/wheels/README.md
@@ -0,0 +1,32 @@
+README
+------
+
+[cibuildwheel](https://github.com/pypa/cibuildwheel) is used to build wheels for tagged
+versions of Pillow.
+
+This directory contains [multibuild](https://github.com/multi-build/multibuild) to
+build dependencies for macOS and Linux wheels, and dependency licenses to be included.
+
+Archives
+--------
+
+https://github.com/python-pillow/pillow-depends contains archives for libraries
+that will be built as part of the Pillow build.
+
+In general, there is no need to put library archives there, because the
+`multibuild` scripts will download them from their respective URLs.
+
+But, the build will look in that repository before downloading from the
+URL, so if there is a library that often fails to download, or you think might
+fail to download, then download it and add it to the Git repository.
+
+See `build` in `.github/workflows/wheels-dependencies.sh` and the `fetch_unpack`
+routine in `multibuild/common_utils.sh` for the logic, and the build recipes in
+`multibuild/library_builders.sh` for the filename to give to the downloaded
+archive.
+
+Wheels
+------
+
+Wheels are
+[GitHub Actions artifacts created for tags, relevant changes or manual builds](https://github.com/python-pillow/Pillow/actions/workflows/wheels.yml).
diff --git a/wheels/dependency_licenses/BROTLI.txt b/wheels/dependency_licenses/BROTLI.txt
new file mode 100644
index 000000000..33b7cdd2d
--- /dev/null
+++ b/wheels/dependency_licenses/BROTLI.txt
@@ -0,0 +1,19 @@
+Copyright (c) 2009, 2010, 2013-2016 by the Brotli Authors.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/wheels/dependency_licenses/BZIP2.txt b/wheels/dependency_licenses/BZIP2.txt
new file mode 100644
index 000000000..d3edf477d
--- /dev/null
+++ b/wheels/dependency_licenses/BZIP2.txt
@@ -0,0 +1,42 @@
+
+--------------------------------------------------------------------------
+
+This program, "bzip2", the associated library "libbzip2", and all
+documentation, are copyright (C) 1996-2019 Julian R Seward.  All
+rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+2. The origin of this software must not be misrepresented; you must
+   not claim that you wrote the original software.  If you use this
+   software in a product, an acknowledgment in the product
+   documentation would be appreciated but is not required.
+
+3. Altered source versions must be plainly marked as such, and must
+   not be misrepresented as being the original software.
+
+4. The name of the author may not be used to endorse or promote
+   products derived from this software without specific prior written
+   permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Julian Seward, jseward@acm.org
+bzip2/libbzip2 version 1.0.8 of 13 July 2019
+
+--------------------------------------------------------------------------
diff --git a/wheels/dependency_licenses/FREETYPE2.txt b/wheels/dependency_licenses/FREETYPE2.txt
new file mode 100644
index 000000000..93efc6126
--- /dev/null
+++ b/wheels/dependency_licenses/FREETYPE2.txt
@@ -0,0 +1,652 @@
+The FreeType  2 font  engine is  copyrighted work  and cannot  be used
+legally without  a software  license.  In order  to make  this project
+usable to  a vast majority of  developers, we distribute it  under two
+mutually exclusive open-source licenses.
+
+This means that *you* must choose  *one* of the two licenses described
+below, then obey all its terms and conditions when using FreeType 2 in
+any of your projects or products.
+
+  - The FreeType License,  found in the file  `docs/FTL.TXT`, which is
+    similar to the  original BSD license *with*  an advertising clause
+    that forces  you to explicitly  cite the FreeType project  in your
+    product's  documentation.  All  details are  in the  license file.
+    This license is suited to products which don't use the GNU General
+    Public License.
+
+    Note that  this license  is compatible to  the GNU  General Public
+    License version 3, but not version 2.
+
+  - The   GNU   General   Public   License   version   2,   found   in
+    `docs/GPLv2.TXT`  (any  later  version  can  be  used  also),  for
+    programs  which  already  use  the  GPL.  Note  that  the  FTL  is
+    incompatible with GPLv2 due to its advertisement clause.
+
+The contributed  BDF and PCF  drivers come  with a license  similar to
+that  of the  X Window  System.   It is  compatible to  the above  two
+licenses (see files `src/bdf/README`  and `src/pcf/README`).  The same
+holds   for   the   source    code   files   `src/base/fthash.c`   and
+`include/freetype/internal/fthash.h`; they were part of the BDF driver
+in earlier FreeType versions.
+
+The gzip  module uses the  zlib license (see  `src/gzip/zlib.h`) which
+too is compatible to the above two licenses.
+
+The files `src/autofit/ft-hb.c` and `src/autofit/ft-hb.h` contain code
+taken almost  verbatim from the  HarfBuzz file `hb-ft.cc`,  which uses
+the 'Old MIT' license, compatible to the above two licenses.
+
+The  MD5 checksum  support  (only used  for  debugging in  development
+builds) is in the public domain.
+
+--------------------------------------------------------------------------
+
+                    The FreeType Project LICENSE
+                    ----------------------------
+
+                            2006-Jan-27
+
+                    Copyright 1996-2002, 2006 by
+          David Turner, Robert Wilhelm, and Werner Lemberg
+
+
+
+Introduction
+============
+
+  The FreeType  Project is distributed in  several archive packages;
+  some of them may contain, in addition to the FreeType font engine,
+  various tools and  contributions which rely on, or  relate to, the
+  FreeType Project.
+
+  This  license applies  to all  files found  in such  packages, and
+  which do not  fall under their own explicit  license.  The license
+  affects  thus  the  FreeType   font  engine,  the  test  programs,
+  documentation and makefiles, at the very least.
+
+  This  license   was  inspired  by  the  BSD,   Artistic,  and  IJG
+  (Independent JPEG  Group) licenses, which  all encourage inclusion
+  and  use of  free  software in  commercial  and freeware  products
+  alike.  As a consequence, its main points are that:
+
+    o We don't promise that this software works. However, we will be
+      interested in any kind of bug reports. (`as is' distribution)
+
+    o You can  use this software for whatever you  want, in parts or
+      full form, without having to pay us. (`royalty-free' usage)
+
+    o You may not pretend that  you wrote this software.  If you use
+      it, or  only parts of it,  in a program,  you must acknowledge
+      somewhere  in  your  documentation  that  you  have  used  the
+      FreeType code. (`credits')
+
+  We  specifically  permit  and  encourage  the  inclusion  of  this
+  software, with  or without modifications,  in commercial products.
+  We  disclaim  all warranties  covering  The  FreeType Project  and
+  assume no liability related to The FreeType Project.
+
+
+  Finally,  many  people  asked  us  for  a  preferred  form  for  a
+  credit/disclaimer to use in compliance with this license.  We thus
+  encourage you to use the following text:
+
+   """
+    Portions of this software are copyright © <year> The FreeType
+    Project (www.freetype.org).  All rights reserved.
+   """
+
+  Please replace <year> with the value from the FreeType version you
+  actually use.
+
+
+Legal Terms
+===========
+
+0. Definitions
+--------------
+
+  Throughout this license,  the terms `package', `FreeType Project',
+  and  `FreeType  archive' refer  to  the  set  of files  originally
+  distributed  by the  authors  (David Turner,  Robert Wilhelm,  and
+  Werner Lemberg) as the `FreeType Project', be they named as alpha,
+  beta or final release.
+
+  `You' refers to  the licensee, or person using  the project, where
+  `using' is a generic term including compiling the project's source
+  code as  well as linking it  to form a  `program' or `executable'.
+  This  program is  referred to  as  `a program  using the  FreeType
+  engine'.
+
+  This  license applies  to all  files distributed  in  the original
+  FreeType  Project,   including  all  source   code,  binaries  and
+  documentation,  unless  otherwise  stated   in  the  file  in  its
+  original, unmodified form as  distributed in the original archive.
+  If you are  unsure whether or not a particular  file is covered by
+  this license, you must contact us to verify this.
+
+  The FreeType  Project is copyright (C) 1996-2000  by David Turner,
+  Robert Wilhelm, and Werner Lemberg.  All rights reserved except as
+  specified below.
+
+1. No Warranty
+--------------
+
+  THE FREETYPE PROJECT  IS PROVIDED `AS IS' WITHOUT  WARRANTY OF ANY
+  KIND, EITHER  EXPRESS OR IMPLIED,  INCLUDING, BUT NOT  LIMITED TO,
+  WARRANTIES  OF  MERCHANTABILITY   AND  FITNESS  FOR  A  PARTICULAR
+  PURPOSE.  IN NO EVENT WILL ANY OF THE AUTHORS OR COPYRIGHT HOLDERS
+  BE LIABLE  FOR ANY DAMAGES CAUSED  BY THE USE OR  THE INABILITY TO
+  USE, OF THE FREETYPE PROJECT.
+
+2. Redistribution
+-----------------
+
+  This  license  grants  a  worldwide, royalty-free,  perpetual  and
+  irrevocable right  and license to use,  execute, perform, compile,
+  display,  copy,   create  derivative  works   of,  distribute  and
+  sublicense the  FreeType Project (in  both source and  object code
+  forms)  and  derivative works  thereof  for  any  purpose; and  to
+  authorize others  to exercise  some or all  of the  rights granted
+  herein, subject to the following conditions:
+
+    o Redistribution of  source code  must retain this  license file
+      (`FTL.TXT') unaltered; any  additions, deletions or changes to
+      the original  files must be clearly  indicated in accompanying
+      documentation.   The  copyright   notices  of  the  unaltered,
+      original  files must  be  preserved in  all  copies of  source
+      files.
+
+    o Redistribution in binary form must provide a  disclaimer  that
+      states  that  the software is based in part of the work of the
+      FreeType Team,  in  the  distribution  documentation.  We also
+      encourage you to put an URL to the FreeType web page  in  your
+      documentation, though this isn't mandatory.
+
+  These conditions  apply to any  software derived from or  based on
+  the FreeType Project,  not just the unmodified files.   If you use
+  our work, you  must acknowledge us.  However, no  fee need be paid
+  to us.
+
+3. Advertising
+--------------
+
+  Neither the  FreeType authors and  contributors nor you  shall use
+  the name of the  other for commercial, advertising, or promotional
+  purposes without specific prior written permission.
+
+  We suggest,  but do not require, that  you use one or  more of the
+  following phrases to refer  to this software in your documentation
+  or advertising  materials: `FreeType Project',  `FreeType Engine',
+  `FreeType library', or `FreeType Distribution'.
+
+  As  you have  not signed  this license,  you are  not  required to
+  accept  it.   However,  as  the FreeType  Project  is  copyrighted
+  material, only  this license, or  another one contracted  with the
+  authors, grants you  the right to use, distribute,  and modify it.
+  Therefore,  by  using,  distributing,  or modifying  the  FreeType
+  Project, you indicate that you understand and accept all the terms
+  of this license.
+
+4. Contacts
+-----------
+
+  There are two mailing lists related to FreeType:
+
+    o freetype@nongnu.org
+
+      Discusses general use and applications of FreeType, as well as
+      future and  wanted additions to the  library and distribution.
+      If  you are looking  for support,  start in  this list  if you
+      haven't found anything to help you in the documentation.
+
+    o freetype-devel@nongnu.org
+
+      Discusses bugs,  as well  as engine internals,  design issues,
+      specific licenses, porting, etc.
+
+  Our home page can be found at
+
+    https://www.freetype.org
+
+
+--- end of FTL.TXT ---
+
+--------------------------------------------------------------------------
+
+            GNU GENERAL PUBLIC LICENSE
+               Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+     51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+            GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+             END OF TERMS AND CONDITIONS
+
+        How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year  name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
+
+--------------------------------------------------------------------------
+
+The following license details are part of `src/bdf/README`:
+
+```
+License
+*******
+
+Copyright (C) 2001-2002 by Francesco Zappa Nardelli
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*** Portions of the driver (that is, bdflib.c and bdf.h):
+
+Copyright 2000 Computing Research Labs, New Mexico State University
+Copyright 2001-2002, 2011 Francesco Zappa Nardelli
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE COMPUTING RESEARCH LAB OR NEW MEXICO STATE UNIVERSITY BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
+OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
+THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+Credits
+*******
+
+This driver is based on excellent Mark Leisher's bdf library.  If you
+find something good in this driver you should probably thank him, not
+me.
+```
+
+The following license details are part of `src/pcf/README`:
+
+```
+License
+*******
+
+Copyright (C) 2000 by Francesco Zappa Nardelli
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+Credits
+*******
+
+Keith Packard wrote the pcf driver found in XFree86.  His work is at
+the same time the specification and the sample implementation of the
+PCF format.  Undoubtedly, this driver is inspired from his work.
+```
diff --git a/wheels/dependency_licenses/HARFBUZZ.txt b/wheels/dependency_licenses/HARFBUZZ.txt
new file mode 100644
index 000000000..1dd917e9f
--- /dev/null
+++ b/wheels/dependency_licenses/HARFBUZZ.txt
@@ -0,0 +1,42 @@
+HarfBuzz is licensed under the so-called "Old MIT" license.  Details follow.
+For parts of HarfBuzz that are licensed under different licenses see individual
+files names COPYING in subdirectories where applicable.
+
+Copyright © 2010-2022  Google, Inc.
+Copyright © 2015-2020  Ebrahim Byagowi
+Copyright © 2019,2020  Facebook, Inc.
+Copyright © 2012,2015  Mozilla Foundation
+Copyright © 2011  Codethink Limited
+Copyright © 2008,2010  Nokia Corporation and/or its subsidiary(-ies)
+Copyright © 2009  Keith Stribley
+Copyright © 2011  Martin Hosken and SIL International
+Copyright © 2007  Chris Wilson
+Copyright © 2005,2006,2020,2021,2022,2023  Behdad Esfahbod
+Copyright © 2004,2007,2008,2009,2010,2013,2021,2022,2023  Red Hat, Inc.
+Copyright © 1998-2005  David Turner and Werner Lemberg
+Copyright © 2016  Igalia S.L.
+Copyright © 2022  Matthias Clasen
+Copyright © 2018,2021  Khaled Hosny
+Copyright © 2018,2019,2020  Adobe, Inc
+Copyright © 2013-2015  Alexei Podtelezhnikov
+
+For full copyright notices consult the individual files in the package.
+
+
+Permission is hereby granted, without written agreement and without
+license or royalty fees, to use, copy, modify, and distribute this
+software and its documentation for any purpose, provided that the
+above copyright notice and the following two paragraphs appear in
+all copies of this software.
+
+IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGE.
+
+THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
diff --git a/wheels/dependency_licenses/LCMS2.txt b/wheels/dependency_licenses/LCMS2.txt
new file mode 100644
index 000000000..21ed6fb86
--- /dev/null
+++ b/wheels/dependency_licenses/LCMS2.txt
@@ -0,0 +1,8 @@
+Little CMS
+Copyright (c) 1998-2020 Marti Maria Saguer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/wheels/dependency_licenses/LIBJPEG.txt b/wheels/dependency_licenses/LIBJPEG.txt
new file mode 100644
index 000000000..b5451f405
--- /dev/null
+++ b/wheels/dependency_licenses/LIBJPEG.txt
@@ -0,0 +1,43 @@
+1. We don't promise that this software works.  (But if you find any bugs,
+   please let us know!)
+2. You can use this software for whatever you want.  You don't have to pay us.
+3. You may not pretend that you wrote this software.  If you use it in a
+   program, you must acknowledge somewhere in your documentation that
+   you've used the IJG code.
+
+In legalese:
+
+The authors make NO WARRANTY or representation, either express or implied,
+with respect to this software, its quality, accuracy, merchantability, or
+fitness for a particular purpose.  This software is provided "AS IS", and you,
+its user, assume the entire risk as to its quality and accuracy.
+
+This software is copyright (C) 1991-2020, Thomas G. Lane, Guido Vollbeding.
+All Rights Reserved except as specified below.
+
+Permission is hereby granted to use, copy, modify, and distribute this
+software (or portions thereof) for any purpose, without fee, subject to these
+conditions:
+(1) If any part of the source code for this software is distributed, then this
+README file must be included, with this copyright and no-warranty notice
+unaltered; and any additions, deletions, or changes to the original files
+must be clearly indicated in accompanying documentation.
+(2) If only executable code is distributed, then the accompanying
+documentation must state that "this software is based in part on the work of
+the Independent JPEG Group".
+(3) Permission for use of this software is granted only if the user accepts
+full responsibility for any undesirable consequences; the authors accept
+NO LIABILITY for damages of any kind.
+
+These conditions apply to any software derived from or based on the IJG code,
+not just to the unmodified library.  If you use our work, you ought to
+acknowledge us.
+
+Permission is NOT granted for the use of any IJG author's name or company name
+in advertising or publicity relating to this software or products derived from
+it.  This software may be referred to only as "the Independent JPEG Group's
+software".
+
+We specifically permit and encourage the use of this software as the basis of
+commercial products, provided that all warranty or liability claims are
+assumed by the product vendor.
diff --git a/wheels/dependency_licenses/LIBLZMA.txt b/wheels/dependency_licenses/LIBLZMA.txt
new file mode 100644
index 000000000..43c7a23ba
--- /dev/null
+++ b/wheels/dependency_licenses/LIBLZMA.txt
@@ -0,0 +1,63 @@
+XZ Utils Licensing
+==================
+
+    Different licenses apply to different files in this package. Here
+    is a rough summary of which licenses apply to which parts of this
+    package (but check the individual files to be sure!):
+
+      - liblzma is in the public domain.
+
+      - xz, xzdec, and lzmadec command line tools are in the public
+        domain unless GNU getopt_long had to be compiled and linked
+        in from the lib directory. The getopt_long code is under
+        GNU LGPLv2.1+.
+
+      - The scripts to grep, diff, and view compressed files have been
+        adapted from gzip. These scripts and their documentation are
+        under GNU GPLv2+.
+
+      - All the documentation in the doc directory and most of the
+        XZ Utils specific documentation files in other directories
+        are in the public domain.
+
+      - Translated messages are in the public domain.
+
+      - The build system contains public domain files, and files that
+        are under GNU GPLv2+ or GNU GPLv3+. None of these files end up
+        in the binaries being built.
+
+      - Test files and test code in the tests directory, and debugging
+        utilities in the debug directory are in the public domain.
+
+      - The extra directory may contain public domain files, and files
+        that are under various free software licenses.
+
+    You can do whatever you want with the files that have been put into
+    the public domain. If you find public domain legally problematic,
+    take the previous sentence as a license grant. If you still find
+    the lack of copyright legally problematic, you have too many
+    lawyers.
+
+    As usual, this software is provided "as is", without any warranty.
+
+    If you copy significant amounts of public domain code from XZ Utils
+    into your project, acknowledging this somewhere in your software is
+    polite (especially if it is proprietary, non-free software), but
+    naturally it is not legally required. Here is an example of a good
+    notice to put into "about box" or into documentation:
+
+        This software includes code from XZ Utils <http://tukaani.org/xz/>.
+
+    The following license texts are included in the following files:
+      - COPYING.LGPLv2.1: GNU Lesser General Public License version 2.1
+      - COPYING.GPLv2: GNU General Public License version 2
+      - COPYING.GPLv3: GNU General Public License version 3
+
+    Note that the toolchain (compiler, linker etc.) may add some code
+    pieces that are copyrighted. Thus, it is possible that e.g. liblzma
+    binary wouldn't actually be in the public domain in its entirety
+    even though it contains no copyrighted code from the XZ Utils source
+    package.
+
+    If you have questions, don't hesitate to ask the author(s) for more
+    information.
diff --git a/wheels/dependency_licenses/LIBPNG.txt b/wheels/dependency_licenses/LIBPNG.txt
new file mode 100644
index 000000000..c8ad24eec
--- /dev/null
+++ b/wheels/dependency_licenses/LIBPNG.txt
@@ -0,0 +1,134 @@
+COPYRIGHT NOTICE, DISCLAIMER, and LICENSE
+=========================================
+
+PNG Reference Library License version 2
+---------------------------------------
+
+ * Copyright (c) 1995-2022 The PNG Reference Library Authors.
+ * Copyright (c) 2018-2022 Cosmin Truta.
+ * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
+ * Copyright (c) 1996-1997 Andreas Dilger.
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
+
+The software is supplied "as is", without warranty of any kind,
+express or implied, including, without limitation, the warranties
+of merchantability, fitness for a particular purpose, title, and
+non-infringement.  In no event shall the Copyright owners, or
+anyone distributing the software, be liable for any damages or
+other liability, whether in contract, tort or otherwise, arising
+from, out of, or in connection with the software, or the use or
+other dealings in the software, even if advised of the possibility
+of such damage.
+
+Permission is hereby granted to use, copy, modify, and distribute
+this software, or portions hereof, for any purpose, without fee,
+subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you
+    must not claim that you wrote the original software.  If you
+    use this software in a product, an acknowledgment in the product
+    documentation would be appreciated, but is not required.
+
+ 2. Altered source versions must be plainly marked as such, and must
+    not be misrepresented as being the original software.
+
+ 3. This Copyright notice may not be removed or altered from any
+    source or altered source distribution.
+
+
+PNG Reference Library License version 1 (for libpng 0.5 through 1.6.35)
+-----------------------------------------------------------------------
+
+libpng versions 1.0.7, July 1, 2000, through 1.6.35, July 15, 2018 are
+Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson, are
+derived from libpng-1.0.6, and are distributed according to the same
+disclaimer and license as libpng-1.0.6 with the following individuals
+added to the list of Contributing Authors:
+
+    Simon-Pierre Cadieux
+    Eric S. Raymond
+    Mans Rullgard
+    Cosmin Truta
+    Gilles Vollant
+    James Yu
+    Mandar Sahastrabuddhe
+    Google Inc.
+    Vadim Barkov
+
+and with the following additions to the disclaimer:
+
+    There is no warranty against interference with your enjoyment of
+    the library or against infringement.  There is no warranty that our
+    efforts or the library will fulfill any of your particular purposes
+    or needs.  This library is provided with all faults, and the entire
+    risk of satisfactory quality, performance, accuracy, and effort is
+    with the user.
+
+Some files in the "contrib" directory and some configure-generated
+files that are distributed with libpng have other copyright owners, and
+are released under other open source licenses.
+
+libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
+Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
+libpng-0.96, and are distributed according to the same disclaimer and
+license as libpng-0.96, with the following individuals added to the
+list of Contributing Authors:
+
+    Tom Lane
+    Glenn Randers-Pehrson
+    Willem van Schaik
+
+libpng versions 0.89, June 1996, through 0.96, May 1997, are
+Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88,
+and are distributed according to the same disclaimer and license as
+libpng-0.88, with the following individuals added to the list of
+Contributing Authors:
+
+    John Bowler
+    Kevin Bracey
+    Sam Bushell
+    Magnus Holmgren
+    Greg Roelofs
+    Tom Tanner
+
+Some files in the "scripts" directory have other copyright owners,
+but are released under this license.
+
+libpng versions 0.5, May 1995, through 0.88, January 1996, are
+Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
+
+For the purposes of this copyright and license, "Contributing Authors"
+is defined as the following set of individuals:
+
+    Andreas Dilger
+    Dave Martindale
+    Guy Eric Schalnat
+    Paul Schmidt
+    Tim Wegner
+
+The PNG Reference Library is supplied "AS IS".  The Contributing
+Authors and Group 42, Inc. disclaim all warranties, expressed or
+implied, including, without limitation, the warranties of
+merchantability and of fitness for any purpose.  The Contributing
+Authors and Group 42, Inc. assume no liability for direct, indirect,
+incidental, special, exemplary, or consequential damages, which may
+result from the use of the PNG Reference Library, even if advised of
+the possibility of such damage.
+
+Permission is hereby granted to use, copy, modify, and distribute this
+source code, or portions hereof, for any purpose, without fee, subject
+to the following restrictions:
+
+ 1. The origin of this source code must not be misrepresented.
+
+ 2. Altered versions must be plainly marked as such and must not
+    be misrepresented as being the original source.
+
+ 3. This Copyright notice may not be removed or altered from any
+    source or altered source distribution.
+
+The Contributing Authors and Group 42, Inc. specifically permit,
+without fee, and encourage the use of this source code as a component
+to supporting the PNG file format in commercial products.  If you use
+this source code in a product, acknowledgment is not required but would
+be appreciated.
diff --git a/wheels/dependency_licenses/LIBTIFF.txt b/wheels/dependency_licenses/LIBTIFF.txt
new file mode 100644
index 000000000..dc255dec6
--- /dev/null
+++ b/wheels/dependency_licenses/LIBTIFF.txt
@@ -0,0 +1,21 @@
+Copyright (c) 1988-1997 Sam Leffler
+Copyright (c) 1991-1997 Silicon Graphics, Inc.
+
+Permission to use, copy, modify, distribute, and sell this software and
+its documentation for any purpose is hereby granted without fee, provided
+that (i) the above copyright notices and this permission notice appear in
+all copies of the software and related documentation, and (ii) the names of
+Sam Leffler and Silicon Graphics may not be used in any advertising or
+publicity relating to the software without the specific, prior written
+permission of Sam Leffler and Silicon Graphics.
+
+THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+
+IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+OF THIS SOFTWARE.
diff --git a/wheels/dependency_licenses/LIBWEBP.txt b/wheels/dependency_licenses/LIBWEBP.txt
new file mode 100644
index 000000000..83e4e6f6d
--- /dev/null
+++ b/wheels/dependency_licenses/LIBWEBP.txt
@@ -0,0 +1,29 @@
+Copyright (c) 2010, Google Inc. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+  * Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+  * Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+  * Neither the name of Google nor the names of its contributors may
+    be used to endorse or promote products derived from this software
+    without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/wheels/dependency_licenses/OPENJPEG.txt b/wheels/dependency_licenses/OPENJPEG.txt
new file mode 100644
index 000000000..c41fc21d8
--- /dev/null
+++ b/wheels/dependency_licenses/OPENJPEG.txt
@@ -0,0 +1,39 @@
+*
+ * The copyright in this software is being made available under the 2-clauses
+ * BSD License, included below. This software may be subject to other third
+ * party and contributor rights, including patent rights, and no such rights
+ * are granted under this license.
+ *
+ * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
+ * Copyright (c) 2002-2014, Professor Benoit Macq
+ * Copyright (c) 2003-2014, Antonin Descampe
+ * Copyright (c) 2003-2009, Francois-Olivier Devaux
+ * Copyright (c) 2005, Herve Drolon, FreeImage Team
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2001-2003, David Janssens
+ * Copyright (c) 2011-2012, Centre National d'Etudes Spatiales (CNES), France
+ * Copyright (c) 2012, CS Systemes d'Information, France
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
diff --git a/wheels/dependency_licenses/RAQM.txt b/wheels/dependency_licenses/RAQM.txt
new file mode 100644
index 000000000..196511ef6
--- /dev/null
+++ b/wheels/dependency_licenses/RAQM.txt
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright © 2015 Information Technology Authority (ITA) <foss@ita.gov.om>
+Copyright © 2016 Khaled Hosny <khaledhosny@eglug.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/wheels/dependency_licenses/XAU.txt b/wheels/dependency_licenses/XAU.txt
new file mode 100644
index 000000000..64492ad80
--- /dev/null
+++ b/wheels/dependency_licenses/XAU.txt
@@ -0,0 +1,21 @@
+Copyright 1988, 1993, 1994, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
diff --git a/wheels/dependency_licenses/XCB.txt b/wheels/dependency_licenses/XCB.txt
new file mode 100644
index 000000000..54bfbe5b0
--- /dev/null
+++ b/wheels/dependency_licenses/XCB.txt
@@ -0,0 +1,30 @@
+Copyright (C) 2001-2006 Bart Massey, Jamey Sharp, and Josh Triplett.
+All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute,
+sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall
+be included in all copies or substantial portions of the
+Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
+BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the names of the authors
+or their institutions shall not be used in advertising or
+otherwise to promote the sale, use or other dealings in this
+Software without prior written authorization from the
+authors.
diff --git a/wheels/dependency_licenses/XDMCP.txt b/wheels/dependency_licenses/XDMCP.txt
new file mode 100644
index 000000000..5532d143c
--- /dev/null
+++ b/wheels/dependency_licenses/XDMCP.txt
@@ -0,0 +1,23 @@
+Copyright 1989, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+Author:  Keith Packard, MIT X Consortium
diff --git a/wheels/dependency_licenses/ZLIB.txt b/wheels/dependency_licenses/ZLIB.txt
new file mode 100644
index 000000000..84def6dc6
--- /dev/null
+++ b/wheels/dependency_licenses/ZLIB.txt
@@ -0,0 +1,29 @@
+ (C) 1995-2017 Jean-loup Gailly and Mark Adler
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  Jean-loup Gailly        Mark Adler
+  jloup@gzip.org          madler@alumni.caltech.edu
+
+If you use the zlib library in a product, we would appreciate *not* receiving
+lengthy legal documents to sign.  The sources are provided for free but without
+warranty of any kind.  The library has been entirely written by Jean-loup
+Gailly and Mark Adler; it does not include third-party code.
+
+If you redistribute modified sources, we would appreciate that you include in
+the file ChangeLog history information documenting your changes.  Please read
+the FAQ for more information on the distribution of modified source versions.
diff --git a/wheels/multibuild b/wheels/multibuild
new file mode 160000
index 000000000..9a9d1275f
--- /dev/null
+++ b/wheels/multibuild
@@ -0,0 +1 @@
+Subproject commit 9a9d1275f025f737cdaa3c451ba07129dd95f361
diff --git a/winbuild/README.md b/winbuild/README.md
index 2975acf28..f6111c79b 100644
--- a/winbuild/README.md
+++ b/winbuild/README.md
@@ -11,19 +11,19 @@ For more extensive info, see the [Windows build instructions](build.rst).
 * Requires Microsoft Visual Studio 2017 or newer with C++ component.
 * Requires NASM for libjpeg-turbo, a required dependency when using this script.
 * Requires CMake 3.15 or newer (available as Visual Studio component).
-* Tested on Windows Server 2016 with Visual Studio 2017 Community, and Windows Server 2019 with Visual Studio 2022 Community (AppVeyor).
+* Tested on Windows Server 2019 with Visual Studio 2019 Community and Visual Studio 2022 Community (AppVeyor).
 * Tested on Windows Server 2022 with Visual Studio 2022 Enterprise (GitHub Actions).
 
 The following is a simplified version of the script used on AppVeyor:
 ```
-set PYTHON=C:\Python38\bin
+set PYTHON=C:\Python39\bin
 cd /D C:\Pillow\winbuild
-C:\Python39\bin\python.exe build_prepare.py -v --depends=C:\pillow-depends
+%PYTHON%\python.exe build_prepare.py -v --depends=C:\pillow-depends
 build\build_dep_all.cmd
-build\build_pillow.cmd install
 cd ..
+%PYTHON%\python.exe -m pip install -v -C raqm=vendor -C fribidi=vendor .
 path C:\Pillow\winbuild\build\bin;%PATH%
 %PYTHON%\python.exe selftest.py
 %PYTHON%\python.exe -m pytest -vx --cov PIL --cov Tests --cov-report term --cov-report xml Tests
-build\build_pillow.cmd bdist_wheel
+%PYTHON%\python.exe -m pip wheel -v -C raqm=vendor -C fribidi=vendor .
 ```
diff --git a/winbuild/build.rst b/winbuild/build.rst
index 97df950b3..96b8803b4 100644
--- a/winbuild/build.rst
+++ b/winbuild/build.rst
@@ -27,7 +27,7 @@ Download and install:
 * `Ninja <https://ninja-build.org/>`_
   (optional, use ``--nmake`` if not available; bundled in Visual Studio CMake component)
 
-* x64: `Netwide Assembler (NASM) <https://www.nasm.us/pub/nasm/releasebuilds/?C=M;O=D>`_
+* x86/AMD64: `Netwide Assembler (NASM) <https://www.nasm.us/pub/nasm/releasebuilds/?C=M;O=D>`_
 
 Any version of Visual Studio 2017 or newer should be supported,
 including Visual Studio 2017 Community, or Build Tools for Visual Studio 2019.
@@ -42,11 +42,10 @@ Run ``build_prepare.py`` to configure the build::
 
     usage: winbuild\build_prepare.py [-h] [-v] [-d PILLOW_BUILD]
                                      [--depends PILLOW_DEPS]
-                                     [--architecture {x64,ARM64}]
-                                     [--python PYTHON] [--executable EXECUTABLE]
-                                     [--nmake] [--no-imagequant] [--no-fribidi]
+                                     [--architecture {x86,AMD64,ARM64}] [--nmake]
+                                     [--no-imagequant] [--no-fribidi]
 
-    Download dependencies and generate build scripts for Pillow.
+    Download and generate build scripts for Pillow dependencies.
 
     options:
       -h, --help            show this help message and exit
@@ -56,19 +55,15 @@ Run ``build_prepare.py`` to configure the build::
       --depends PILLOW_DEPS
                             directory used to store cached dependencies (default:
                             'winbuild\depends')
-      --architecture {x64,ARM64}
+      --architecture {x86,AMD64,ARM64}
                             build architecture (default: same as host Python)
-      --python PYTHON       Python install directory (default: use host Python)
-      --executable EXECUTABLE
-                            Python executable (default: use host Python)
       --nmake               build dependencies using NMake instead of Ninja
       --no-imagequant       skip GPL-licensed optional dependency libimagequant
       --no-fribidi, --no-raqm
                             skip LGPL-licensed optional dependency FriBiDi
 
     Arguments can also be supplied using the environment variables PILLOW_BUILD,
-    PILLOW_DEPS, ARCHITECTURE, PYTHON, EXECUTABLE. See winbuild\build.rst for more
-    information.
+    PILLOW_DEPS, ARCHITECTURE. See winbuild\build.rst for more information.
 
 **Warning:** The build directory is wiped when ``build_prepare.py`` is run.
 
@@ -86,14 +81,23 @@ or run the individual scripts in order to build each dependency separately.
 Building Pillow
 ---------------
 
-Once the dependencies are built, run
-``winbuild\build\build_pillow.cmd install`` to build and install
-Pillow for the selected version of Python.
-``winbuild\build\build_pillow.cmd bdist_wheel`` will build wheels
-instead of installing Pillow.
+Once the dependencies are built, make sure the required environment variables
+are set by running ``winbuild\build\build_env.cmd`` and install Pillow with pip::
 
-You can also use ``winbuild\build\build_pillow.cmd --inplace develop`` to build
-and install Pillow in develop mode (instead of ``python3 -m pip install --editable``).
+    winbuild\build\build_env.cmd
+    python.exe -m pip install -v -C raqm=vendor -C fribidi=vendor .
+
+You can also install Pillow in `editable mode`_::
+
+    winbuild\build\build_env.cmd
+    python.exe -m pip install -v -C raqm=vendor -C fribidi=vendor -e .
+
+To build a binary wheel instead, run::
+
+    winbuild\build\build_env.cmd
+    python.exe -m pip wheel -v -C raqm=vendor -C fribidi=vendor .
+
+.. _editable mode: https://setuptools.pypa.io/en/stable/userguide/development_mode.html
 
 Testing Pillow
 --------------
@@ -110,13 +114,14 @@ Example
 
 The following is a simplified version of the script used on AppVeyor::
 
-    set PYTHON=C:\Python38\bin
+    set PYTHON=C:\Python39\bin
     cd /D C:\Pillow\winbuild
-    C:\Python39\bin\python.exe build_prepare.py -v --depends C:\pillow-depends
+    %PYTHON%\python.exe build_prepare.py -v --depends C:\pillow-depends
     build\build_dep_all.cmd
-    build\build_pillow.cmd install
+    build\build_env.cmd
     cd ..
+    %PYTHON%\python.exe -m pip install -v -C raqm=vendor -C fribidi=vendor .
     path C:\Pillow\winbuild\build\bin;%PATH%
     %PYTHON%\python.exe selftest.py
     %PYTHON%\python.exe -m pytest -vx --cov PIL --cov Tests --cov-report term --cov-report xml Tests
-    build\build_pillow.cmd bdist_wheel
+    %PYTHON%\python.exe -m pip wheel -v -C raqm=vendor -C fribidi=vendor .
diff --git a/winbuild/build_prepare.py b/winbuild/build_prepare.py
index d8212ee51..c8332d11c 100644
--- a/winbuild/build_prepare.py
+++ b/winbuild/build_prepare.py
@@ -1,61 +1,63 @@
+from __future__ import annotations
+
 import argparse
 import os
 import platform
 import re
 import shutil
+import struct
 import subprocess
-import sys
+from typing import Any
 
 
-def cmd_cd(path):
+def cmd_cd(path: str) -> str:
     return f"cd /D {path}"
 
 
-def cmd_set(name, value):
+def cmd_set(name: str, value: str) -> str:
     return f"set {name}={value}"
 
 
-def cmd_append(name, value):
+def cmd_append(name: str, value: str) -> str:
     op = "path " if name == "PATH" else f"set {name}="
     return op + f"%{name}%;{value}"
 
 
-def cmd_copy(src, tgt):
+def cmd_copy(src: str, tgt: str) -> str:
     return f'copy /Y /B "{src}" "{tgt}"'
 
 
-def cmd_xcopy(src, tgt):
+def cmd_xcopy(src: str, tgt: str) -> str:
     return f'xcopy /Y /E "{src}" "{tgt}"'
 
 
-def cmd_mkdir(path):
+def cmd_mkdir(path: str) -> str:
     return f'mkdir "{path}"'
 
 
-def cmd_rmdir(path):
+def cmd_rmdir(path: str) -> str:
     return f'rmdir /S /Q "{path}"'
 
 
-def cmd_nmake(makefile=None, target="", params=None):
-    if params is None:
-        params = ""
-    elif isinstance(params, (list, tuple)):
-        params = " ".join(params)
-    else:
-        params = str(params)
-
+def cmd_nmake(
+    makefile: str | None = None,
+    target: str = "",
+    params: list[str] | None = None,
+) -> str:
     return " ".join(
         [
             "{nmake}",
             "-nologo",
             f'-f "{makefile}"' if makefile is not None else "",
-            f"{params}",
+            f'{" ".join(params)}' if params is not None else "",
             f'"{target}"',
         ]
     )
 
 
-def cmds_cmake(target, *params):
+def cmds_cmake(
+    target: str | tuple[str, ...] | list[str], *params: str, build_dir: str = "."
+) -> list[str]:
     if not isinstance(target, str):
         target = " ".join(target)
 
@@ -72,23 +74,27 @@ def cmds_cmake(target, *params):
                 "-DCMAKE_CXX_FLAGS=-nologo",
                 *params,
                 '-G "{cmake_generator}"',
-                ".",
+                f'-B "{build_dir}"',
+                "-S .",
             ]
         ),
-        f"{{cmake}} --build . --clean-first --parallel --target {target}",
+        f'{{cmake}} --build "{build_dir}" --clean-first --parallel --target {target}',
     ]
 
 
 def cmd_msbuild(
-    file, configuration="Release", target="Build", platform="{msbuild_arch}"
-):
+    file: str,
+    configuration: str = "Release",
+    target: str = "Build",
+    plat: str = "{msbuild_arch}",
+) -> str:
     return " ".join(
         [
             "{msbuild}",
             f"{file}",
             f'/t:"{target}"',
             f'/p:Configuration="{configuration}"',
-            f"/p:Platform={platform}",
+            f"/p:Platform={plat}",
             "/m",
         ]
     )
@@ -96,30 +102,48 @@ def cmd_msbuild(
 
 SF_PROJECTS = "https://sourceforge.net/projects"
 
-architectures = {
-    "x64": {"vcvars_arch": "x86_amd64", "msbuild_arch": "x64"},
+ARCHITECTURES = {
+    "x86": {"vcvars_arch": "x86", "msbuild_arch": "Win32"},
+    "AMD64": {"vcvars_arch": "x86_amd64", "msbuild_arch": "x64"},
     "ARM64": {"vcvars_arch": "x86_arm64", "msbuild_arch": "ARM64"},
 }
 
-header = [
-    cmd_set("INCLUDE", "{inc_dir}"),
-    cmd_set("INCLIB", "{lib_dir}"),
-    cmd_set("LIB", "{lib_dir}"),
-    cmd_append("PATH", "{bin_dir}"),
-]
+V = {
+    "BROTLI": "1.1.0",
+    "FREETYPE": "2.13.3",
+    "FRIBIDI": "1.0.16",
+    "HARFBUZZ": "10.0.1",
+    "JPEGTURBO": "3.0.4",
+    "LCMS2": "2.16",
+    "LIBPNG": "1.6.44",
+    "LIBWEBP": "1.4.0",
+    "OPENJPEG": "2.5.2",
+    "TIFF": "4.6.0",
+    "XZ": "5.6.3",
+    "ZLIB": "1.3.1",
+}
+V["LIBPNG_DOTLESS"] = V["LIBPNG"].replace(".", "")
+V["LIBPNG_XY"] = "".join(V["LIBPNG"].split(".")[:2])
+V["ZLIB_DOTLESS"] = V["ZLIB"].replace(".", "")
+
 
 # dependencies, listed in order of compilation
-deps = {
+DEPS: dict[str, dict[str, Any]] = {
     "libjpeg": {
-        "url": SF_PROJECTS
-        + "/libjpeg-turbo/files/2.1.5.1/libjpeg-turbo-2.1.5.1.tar.gz/download",
-        "filename": "libjpeg-turbo-2.1.5.1.tar.gz",
-        "dir": "libjpeg-turbo-2.1.5.1",
+        "url": f"{SF_PROJECTS}/libjpeg-turbo/files/{V['JPEGTURBO']}/FILENAME/download",
+        "filename": f"libjpeg-turbo-{V['JPEGTURBO']}.tar.gz",
+        "dir": f"libjpeg-turbo-{V['JPEGTURBO']}",
         "license": ["README.ijg", "LICENSE.md"],
         "license_pattern": (
             "(LEGAL ISSUES\n============\n\n.+?)\n\nREFERENCES\n=========="
             ".+(libjpeg-turbo Licenses\n======================\n\n.+)$"
         ),
+        "patch": {
+            r"CMakeLists.txt": {
+                # libjpeg-turbo does not detect MSVC x86_arm64 cross-compiler correctly
+                'if(MSVC_IDE AND CMAKE_GENERATOR_PLATFORM MATCHES "arm64")': "if({architecture} STREQUAL ARM64)",  # noqa: E501
+            },
+        },
         "build": [
             *cmds_cmake(
                 ("jpeg-static", "cjpeg-static", "djpeg-static"),
@@ -136,9 +160,9 @@ deps = {
         "bins": ["cjpeg.exe", "djpeg.exe"],
     },
     "zlib": {
-        "url": "https://zlib.net/zlib1213.zip",
-        "filename": "zlib1213.zip",
-        "dir": "zlib-1.2.13",
+        "url": "https://zlib.net/FILENAME",
+        "filename": f"zlib{V['ZLIB_DOTLESS']}.zip",
+        "dir": f"zlib-{V['ZLIB']}",
         "license": "README",
         "license_pattern": "Copyright notice:\n\n(.+)$",
         "build": [
@@ -150,9 +174,9 @@ deps = {
         "libs": [r"*.lib"],
     },
     "xz": {
-        "url": SF_PROJECTS + "/lzmautils/files/xz-5.4.3.tar.gz/download",
-        "filename": "xz-5.4.3.tar.gz",
-        "dir": "xz-5.4.3",
+        "url": f"https://github.com/tukaani-project/xz/releases/download/v{V['XZ']}/FILENAME",
+        "filename": f"xz-{V['XZ']}.tar.gz",
+        "dir": f"xz-{V['XZ']}",
         "license": "COPYING",
         "build": [
             *cmds_cmake("liblzma", "-DBUILD_SHARED_LIBS:BOOL=OFF"),
@@ -160,84 +184,92 @@ deps = {
             cmd_copy(r"src\liblzma\api\lzma\*.h", r"{inc_dir}\lzma"),
         ],
         "headers": [r"src\liblzma\api\lzma.h"],
-        "libs": [r"liblzma.lib"],
+        "libs": [r"lzma.lib"],
     },
     "libwebp": {
-        "url": "http://downloads.webmproject.org/releases/webp/libwebp-1.3.0.tar.gz",
-        "filename": "libwebp-1.3.0.tar.gz",
-        "dir": "libwebp-1.3.0",
+        "url": "http://downloads.webmproject.org/releases/webp/FILENAME",
+        "filename": f"libwebp-{V['LIBWEBP']}.tar.gz",
+        "dir": f"libwebp-{V['LIBWEBP']}",
         "license": "COPYING",
+        "patch": {
+            r"src\enc\picture_csp_enc.c": {
+                # link against libsharpyuv.lib
+                '#include "sharpyuv/sharpyuv.h"': '#include "sharpyuv/sharpyuv.h"\n#pragma comment(lib, "libsharpyuv.lib")',  # noqa: E501
+            }
+        },
         "build": [
-            cmd_rmdir(r"output\release-static"),  # clean
-            cmd_nmake(
-                "Makefile.vc",
-                "all",
-                [
-                    "CFG=release-static",
-                    "RTLIBCFG=dynamic",
-                    "OBJDIR=output",
-                    "ARCH={architecture}",
-                    "LIBWEBP_BASENAME=webp",
-                ],
+            *cmds_cmake(
+                "webp webpmux webpdemux",
+                "-DBUILD_SHARED_LIBS:BOOL=OFF",
+                "-DWEBP_LINK_STATIC:BOOL=OFF",
             ),
             cmd_mkdir(r"{inc_dir}\webp"),
             cmd_copy(r"src\webp\*.h", r"{inc_dir}\webp"),
         ],
-        "libs": [r"output\release-static\{architecture}\lib\*.lib"],
+        "libs": [r"libsharpyuv.lib", r"libwebp*.lib"],
     },
     "libtiff": {
-        "url": "https://download.osgeo.org/libtiff/tiff-4.5.0.tar.gz",
-        "filename": "tiff-4.5.0.tar.gz",
-        "dir": "tiff-4.5.0",
+        "url": "https://download.osgeo.org/libtiff/FILENAME",
+        "filename": f"tiff-{V['TIFF']}.tar.gz",
+        "dir": f"tiff-{V['TIFF']}",
         "license": "LICENSE.md",
         "patch": {
             r"libtiff\tif_lzma.c": {
-                # link against liblzma.lib
-                "#ifdef LZMA_SUPPORT": '#ifdef LZMA_SUPPORT\n#pragma comment(lib, "liblzma.lib")',  # noqa: E501
+                # link against lzma.lib
+                "#ifdef LZMA_SUPPORT": '#ifdef LZMA_SUPPORT\n#pragma comment(lib, "lzma.lib")',  # noqa: E501
             },
             r"libtiff\tif_webp.c": {
-                # link against webp.lib
-                "#ifdef WEBP_SUPPORT": '#ifdef WEBP_SUPPORT\n#pragma comment(lib, "webp.lib")',  # noqa: E501
+                # link against libwebp.lib
+                "#ifdef WEBP_SUPPORT": '#ifdef WEBP_SUPPORT\n#pragma comment(lib, "libwebp.lib")',  # noqa: E501
+            },
+            r"test\CMakeLists.txt": {
+                "add_executable(test_write_read_tags ../placeholder.h)": "",
+                "target_sources(test_write_read_tags PRIVATE test_write_read_tags.c)": "",  # noqa: E501
+                "target_link_libraries(test_write_read_tags PRIVATE tiff)": "",
+                "list(APPEND simple_tests test_write_read_tags)": "",
             },
         },
         "build": [
             *cmds_cmake(
                 "tiff",
                 "-DBUILD_SHARED_LIBS:BOOL=OFF",
+                "-DWebP_LIBRARY=libwebp",
                 '-DCMAKE_C_FLAGS="-nologo -DLZMA_API_STATIC"',
             )
         ],
         "headers": [r"libtiff\tiff*.h"],
         "libs": [r"libtiff\*.lib"],
-        # "bins": [r"libtiff\*.dll"],
     },
     "libpng": {
-        "url": SF_PROJECTS + "/libpng/files/libpng16/1.6.39/lpng1639.zip/download",
-        "filename": "lpng1639.zip",
-        "dir": "lpng1639",
+        "url": f"{SF_PROJECTS}/libpng/files/libpng{V['LIBPNG_XY']}/{V['LIBPNG']}/"
+        f"lpng{V['LIBPNG_DOTLESS']}.zip/download",
+        "filename": f"lpng{V['LIBPNG_DOTLESS']}.zip",
+        "dir": f"lpng{V['LIBPNG_DOTLESS']}",
         "license": "LICENSE",
         "build": [
             *cmds_cmake("png_static", "-DPNG_SHARED:BOOL=OFF", "-DPNG_TESTS:BOOL=OFF"),
-            cmd_copy("libpng16_static.lib", "libpng16.lib"),
+            cmd_copy(
+                f"libpng{V['LIBPNG_XY']}_static.lib", f"libpng{V['LIBPNG_XY']}.lib"
+            ),
         ],
         "headers": [r"png*.h"],
-        "libs": [r"libpng16.lib"],
+        "libs": [f"libpng{V['LIBPNG_XY']}.lib"],
     },
     "brotli": {
-        "url": "https://github.com/google/brotli/archive/refs/tags/v1.0.9.tar.gz",
-        "filename": "brotli-1.0.9.tar.gz",
-        "dir": "brotli-1.0.9",
+        "url": f"https://github.com/google/brotli/archive/refs/tags/v{V['BROTLI']}.tar.gz",
+        "filename": f"brotli-{V['BROTLI']}.tar.gz",
+        "dir": f"brotli-{V['BROTLI']}",
         "license": "LICENSE",
         "build": [
-            *cmds_cmake(("brotlicommon-static", "brotlidec-static")),
+            *cmds_cmake(("brotlicommon", "brotlidec"), "-DBUILD_SHARED_LIBS:BOOL=OFF"),
             cmd_xcopy(r"c\include", "{inc_dir}"),
         ],
         "libs": ["*.lib"],
     },
     "freetype": {
-        "url": "https://download.savannah.gnu.org/releases/freetype/freetype-2.13.0.tar.gz",  # noqa: E501
-        "filename": "freetype-2.13.0.tar.gz",
-        "dir": "freetype-2.13.0",
+        "url": "https://download.savannah.gnu.org/releases/freetype/FILENAME",
+        "filename": f"freetype-{V['FREETYPE']}.tar.gz",
+        "dir": f"freetype-{V['FREETYPE']}",
         "license": ["LICENSE.TXT", r"docs\FTL.TXT", r"docs\GPLv2.TXT"],
         "patch": {
             r"builds\windows\vc2010\freetype.vcxproj": {
@@ -250,7 +282,7 @@ deps = {
                 "<UserDefines></UserDefines>": "<UserDefines>FT_CONFIG_OPTION_SYSTEM_ZLIB;FT_CONFIG_OPTION_USE_PNG;FT_CONFIG_OPTION_USE_HARFBUZZ;FT_CONFIG_OPTION_USE_BROTLI</UserDefines>",  # noqa: E501
                 "<UserIncludeDirectories></UserIncludeDirectories>": r"<UserIncludeDirectories>{dir_harfbuzz}\src;{inc_dir}</UserIncludeDirectories>",  # noqa: E501
                 "<UserLibraryDirectories></UserLibraryDirectories>": "<UserLibraryDirectories>{lib_dir}</UserLibraryDirectories>",  # noqa: E501
-                "<UserDependencies></UserDependencies>": "<UserDependencies>zlib.lib;libpng16.lib;brotlicommon-static.lib;brotlidec-static.lib</UserDependencies>",  # noqa: E501
+                "<UserDependencies></UserDependencies>": f"<UserDependencies>zlib.lib;libpng{V['LIBPNG_XY']}.lib;brotlicommon.lib;brotlidec.lib</UserDependencies>",  # noqa: E501
             },
             r"src/autofit/afshaper.c": {
                 # link against harfbuzz.lib
@@ -260,21 +292,20 @@ deps = {
         "build": [
             cmd_rmdir("objs"),
             cmd_msbuild(
-                r"builds\windows\vc2010\freetype.sln", "Release Static", "Clean"
+                r"builds\windows\vc2010\freetype.vcxproj", "Release Static", "Clean"
             ),
             cmd_msbuild(
-                r"builds\windows\vc2010\freetype.sln", "Release Static", "Build"
+                r"builds\windows\vc2010\freetype.vcxproj", "Release Static", "Build"
             ),
             cmd_xcopy("include", "{inc_dir}"),
         ],
         "libs": [r"objs\{msbuild_arch}\Release Static\freetype.lib"],
-        # "bins": [r"objs\{msbuild_arch}\Release\freetype.dll"],
     },
     "lcms2": {
-        "url": SF_PROJECTS + "/lcms/files/lcms/2.15/lcms2-2.15.tar.gz/download",
-        "filename": "lcms2-2.15.tar.gz",
-        "dir": "lcms2-2.15",
-        "license": "COPYING",
+        "url": f"{SF_PROJECTS}/lcms/files/lcms/{V['LCMS2']}/FILENAME/download",
+        "filename": f"lcms2-{V['LCMS2']}.tar.gz",
+        "dir": f"lcms2-{V['LCMS2']}",
+        "license": "LICENSE",
         "patch": {
             r"Projects\VC2022\lcms2_static\lcms2_static.vcxproj": {
                 # default is /MD for x86 and /MT for x64, we need /MD always
@@ -297,27 +328,22 @@ deps = {
         "libs": [r"Lib\MS\*.lib"],
     },
     "openjpeg": {
-        "url": "https://github.com/uclouvain/openjpeg/archive/v2.5.0.tar.gz",
-        "filename": "openjpeg-2.5.0.tar.gz",
-        "dir": "openjpeg-2.5.0",
+        "url": f"https://github.com/uclouvain/openjpeg/archive/v{V['OPENJPEG']}.tar.gz",
+        "filename": f"openjpeg-{V['OPENJPEG']}.tar.gz",
+        "dir": f"openjpeg-{V['OPENJPEG']}",
         "license": "LICENSE",
-        "patch": {
-            r"src\lib\openjp2\ht_dec.c": {
-                "#ifdef OPJ_COMPILER_MSVC\n    return (OPJ_UINT32)__popcnt(val);": "#if defined(OPJ_COMPILER_MSVC) && (defined(_M_IX86) || defined(_M_AMD64))\n    return (OPJ_UINT32)__popcnt(val);",  # noqa: E501
-            }
-        },
         "build": [
             *cmds_cmake(
                 "openjp2", "-DBUILD_CODEC:BOOL=OFF", "-DBUILD_SHARED_LIBS:BOOL=OFF"
             ),
-            cmd_mkdir(r"{inc_dir}\openjpeg-2.5.0"),
-            cmd_copy(r"src\lib\openjp2\*.h", r"{inc_dir}\openjpeg-2.5.0"),
+            cmd_mkdir(rf"{{inc_dir}}\openjpeg-{V['OPENJPEG']}"),
+            cmd_copy(r"src\lib\openjp2\*.h", rf"{{inc_dir}}\openjpeg-{V['OPENJPEG']}"),
         ],
         "libs": [r"bin\*.lib"],
     },
     "libimagequant": {
         # commit: Merge branch 'master' into msvc (matches 2.17.0 tag)
-        "url": "https://github.com/ImageOptim/libimagequant/archive/e4c1334be0eff290af5e2b4155057c2953a313ab.zip",  # noqa: E501
+        "url": "https://github.com/ImageOptim/libimagequant/archive/e4c1334be0eff290af5e2b4155057c2953a313ab.zip",
         "filename": "libimagequant-e4c1334be0eff290af5e2b4155057c2953a313ab.zip",
         "dir": "libimagequant-e4c1334be0eff290af5e2b4155057c2953a313ab",
         "license": "COPYRIGHT",
@@ -325,6 +351,8 @@ deps = {
             "CMakeLists.txt": {
                 "if(OPENMP_FOUND)": "if(false)",
                 "install": "#install",
+                # libimagequant does not detect MSVC x86_arm64 cross-compiler correctly
+                "if(${{CMAKE_SYSTEM_PROCESSOR}} STREQUAL ARM64)": "if({architecture} STREQUAL ARM64)",  # noqa: E501
             }
         },
         "build": [
@@ -335,9 +363,9 @@ deps = {
         "libs": [r"imagequant.lib"],
     },
     "harfbuzz": {
-        "url": "https://github.com/harfbuzz/harfbuzz/archive/7.3.0.zip",
-        "filename": "harfbuzz-7.3.0.zip",
-        "dir": "harfbuzz-7.3.0",
+        "url": f"https://github.com/harfbuzz/harfbuzz/archive/{V['HARFBUZZ']}.zip",
+        "filename": f"harfbuzz-{V['HARFBUZZ']}.zip",
+        "dir": f"harfbuzz-{V['HARFBUZZ']}",
         "license": "COPYING",
         "build": [
             *cmds_cmake(
@@ -350,14 +378,21 @@ deps = {
         "libs": [r"*.lib"],
     },
     "fribidi": {
-        "url": "https://github.com/fribidi/fribidi/archive/v1.0.13.zip",
-        "filename": "fribidi-1.0.13.zip",
-        "dir": "fribidi-1.0.13",
+        "url": f"https://github.com/fribidi/fribidi/archive/v{V['FRIBIDI']}.zip",
+        "filename": f"fribidi-{V['FRIBIDI']}.zip",
+        "dir": f"fribidi-{V['FRIBIDI']}",
         "license": "COPYING",
         "build": [
-            cmd_copy(r"COPYING", r"{bin_dir}\fribidi-1.0.13-COPYING"),
+            cmd_copy(r"COPYING", rf"{{bin_dir}}\fribidi-{V['FRIBIDI']}-COPYING"),
             cmd_copy(r"{winbuild_dir}\fribidi.cmake", r"CMakeLists.txt"),
-            *cmds_cmake("fribidi"),
+            # generated tab.i files cannot be cross-compiled
+            " ^&^& ".join(
+                [
+                    "if {architecture}==ARM64 cmd /c call {vcvarsall} x86",
+                    *cmds_cmake("fribidi-gen", "-DARCH=x86", build_dir="build_x86"),
+                ]
+            ),
+            *cmds_cmake("fribidi", "-DARCH={architecture}"),
         ],
         "bins": [r"*.dll"],
     },
@@ -365,12 +400,16 @@ deps = {
 
 
 # based on distutils._msvccompiler from CPython 3.7.4
-def find_msvs():
+def find_msvs(architecture: str) -> dict[str, str] | None:
     root = os.environ.get("ProgramFiles(x86)") or os.environ.get("ProgramFiles")
     if not root:
         print("Program Files not found")
         return None
 
+    requires = ["-requires", "Microsoft.VisualStudio.Component.VC.Tools.x86.x64"]
+    if architecture == "ARM64":
+        requires += ["-requires", "Microsoft.VisualStudio.Component.VC.Tools.ARM64"]
+
     try:
         vspath = (
             subprocess.check_output(
@@ -380,8 +419,7 @@ def find_msvs():
                     ),
                     "-latest",
                     "-prerelease",
-                    "-requires",
-                    "Microsoft.VisualStudio.Component.VC.Tools.x86.x64",
+                    *requires,
                     "-property",
                     "installationPath",
                     "-products",
@@ -399,23 +437,12 @@ def find_msvs():
         print("Visual Studio seems to be missing C compiler")
         return None
 
-    vs = {
-        "header": [],
-        # nmake selected by vcvarsall
-        "nmake": "nmake.exe",
-        "vs_dir": vspath,
-    }
-
     # vs2017
     msbuild = os.path.join(vspath, "MSBuild", "15.0", "Bin", "MSBuild.exe")
-    if os.path.isfile(msbuild):
-        vs["msbuild"] = f'"{msbuild}"'
-    else:
+    if not os.path.isfile(msbuild):
         # vs2019
         msbuild = os.path.join(vspath, "MSBuild", "Current", "Bin", "MSBuild.exe")
-        if os.path.isfile(msbuild):
-            vs["msbuild"] = f'"{msbuild}"'
-        else:
+        if not os.path.isfile(msbuild):
             print("Visual Studio MSBuild not found")
             return None
 
@@ -423,30 +450,53 @@ def find_msvs():
     if not os.path.isfile(vcvarsall):
         print("Visual Studio vcvarsall not found")
         return None
-    vs["header"].append(f'call "{vcvarsall}" {{vcvars_arch}}')
 
-    return vs
+    return {
+        "vs_dir": vspath,
+        "msbuild": f'"{msbuild}"',
+        "vcvarsall": f'"{vcvarsall}"',
+        "nmake": "nmake.exe",  # nmake selected by vcvarsall
+    }
 
 
-def extract_dep(url, filename):
-    import tarfile
+def download_dep(url: str, file: str) -> None:
+    import urllib.error
     import urllib.request
+
+    ex = None
+    for i in range(3):
+        try:
+            print(f"Fetching {url} (attempt {i + 1})...")
+            content = urllib.request.urlopen(url).read()
+            with open(file, "wb") as f:
+                f.write(content)
+            break
+        except urllib.error.URLError as e:
+            ex = e
+    else:
+        raise RuntimeError(ex)
+
+
+def extract_dep(url: str, filename: str, prefs: dict[str, str]) -> None:
+    import tarfile
     import zipfile
 
-    file = os.path.join(args.depends_dir, filename)
+    depends_dir = prefs["depends_dir"]
+    sources_dir = prefs["src_dir"]
+
+    file = os.path.join(depends_dir, filename)
     if not os.path.exists(file):
-        ex = None
-        for i in range(3):
-            try:
-                print("Fetching %s (attempt %d)..." % (url, i + 1))
-                content = urllib.request.urlopen(url).read()
-                with open(file, "wb") as f:
-                    f.write(content)
-                break
-            except urllib.error.URLError as e:
-                ex = e
-        else:
-            raise RuntimeError(ex)
+        # First try our mirror
+        mirror_url = (
+            f"https://raw.githubusercontent.com/"
+            f"python-pillow/pillow-depends/main/{filename}"
+        )
+        try:
+            download_dep(mirror_url, file)
+        except RuntimeError as exc:
+            # Otherwise try upstream
+            print(exc)
+            download_dep(url.replace("FILENAME", filename), file)
 
     print("Extracting " + filename)
     sources_dir_abs = os.path.abspath(sources_dir)
@@ -459,7 +509,7 @@ def extract_dep(url, filename):
                     msg = "Attempted Path Traversal in Zip File"
                     raise RuntimeError(msg)
             zf.extractall(sources_dir)
-    elif filename.endswith(".tar.gz") or filename.endswith(".tgz"):
+    elif filename.endswith((".tar.gz", ".tgz")):
         with tarfile.open(file, "r:gz") as tgz:
             for member in tgz.getnames():
                 member_abspath = os.path.abspath(os.path.join(sources_dir, member))
@@ -473,18 +523,20 @@ def extract_dep(url, filename):
         raise RuntimeError(msg)
 
 
-def write_script(name, lines):
-    name = os.path.join(args.build_dir, name)
+def write_script(
+    name: str, lines: list[str], prefs: dict[str, str], verbose: bool
+) -> None:
+    name = os.path.join(prefs["build_dir"], name)
     lines = [line.format(**prefs) for line in lines]
     print("Writing " + name)
     with open(name, "w", newline="") as f:
         f.write(os.linesep.join(lines))
-    if args.verbose:
+    if verbose:
         for line in lines:
             print("    " + line)
 
 
-def get_footer(dep):
+def get_footer(dep: dict[str, Any]) -> list[str]:
     lines = []
     for out in dep.get("headers", []):
         lines.append(cmd_copy(out, "{inc_dir}"))
@@ -495,30 +547,49 @@ def get_footer(dep):
     return lines
 
 
-def build_dep(name):
-    dep = deps[name]
-    dir = dep["dir"]
-    file = f"build_dep_{name}.cmd"
+def build_env(prefs: dict[str, str], verbose: bool) -> None:
+    lines = [
+        "if defined DISTUTILS_USE_SDK goto end",
+        cmd_set("INCLUDE", "{inc_dir}"),
+        cmd_set("INCLIB", "{lib_dir}"),
+        cmd_set("LIB", "{lib_dir}"),
+        cmd_append("PATH", "{bin_dir}"),
+        "call {vcvarsall} {vcvars_arch}",
+        cmd_set("DISTUTILS_USE_SDK", "1"),  # use same compiler to build Pillow
+        cmd_set("py_vcruntime_redist", "true"),  # always use /MD, never /MT
+        ":end",
+        "@echo on",
+    ]
+    write_script("build_env.cmd", lines, prefs, verbose)
 
-    extract_dep(dep["url"], dep["filename"])
+
+def build_dep(name: str, prefs: dict[str, str], verbose: bool) -> str:
+    dep = DEPS[name]
+    directory = dep["dir"]
+    file = f"build_dep_{name}.cmd"
+    license_dir = prefs["license_dir"]
+    sources_dir = prefs["src_dir"]
+
+    extract_dep(dep["url"], dep["filename"], prefs)
 
     licenses = dep["license"]
     if isinstance(licenses, str):
         licenses = [licenses]
     license_text = ""
     for license_file in licenses:
-        with open(os.path.join(sources_dir, dir, license_file)) as f:
+        with open(os.path.join(sources_dir, directory, license_file)) as f:
             license_text += f.read()
     if "license_pattern" in dep:
         match = re.search(dep["license_pattern"], license_text, re.DOTALL)
+        assert match is not None
         license_text = "\n".join(match.groups())
     assert len(license_text) > 50
-    with open(os.path.join(license_dir, f"{dir}.txt"), "w") as f:
-        print(f"Writing license {dir}.txt")
+    with open(os.path.join(license_dir, f"{directory}.txt"), "w") as f:
+        print(f"Writing license {directory}.txt")
         f.write(license_text)
 
     for patch_file, patch_list in dep.get("patch", {}).items():
-        patch_file = os.path.join(sources_dir, dir, patch_file.format(**prefs))
+        patch_file = os.path.join(sources_dir, directory, patch_file.format(**prefs))
         with open(patch_file) as f:
             text = f.read()
         for patch_from, patch_to in patch_list.items():
@@ -530,59 +601,50 @@ def build_dep(name):
             print(f"Patching {patch_file}")
             f.write(text)
 
-    banner = f"Building {name} ({dir})"
+    banner = f"Building {name} ({directory})"
     lines = [
+        r'call "{build_dir}\build_env.cmd"',
         "@echo " + ("=" * 70),
         f"@echo ==== {banner:<60} ====",
         "@echo " + ("=" * 70),
-        "cd /D %s" % os.path.join(sources_dir, dir),
-        *prefs["header"],
+        cmd_cd(os.path.join(sources_dir, directory)),
         *dep.get("build", []),
         *get_footer(dep),
     ]
 
-    write_script(file, lines)
+    write_script(file, lines, prefs, verbose)
     return file
 
 
-def build_dep_all():
-    lines = ["@echo on"]
-    for dep_name in deps:
+def build_dep_all(disabled: list[str], prefs: dict[str, str], verbose: bool) -> None:
+    lines = [r'call "{build_dir}\build_env.cmd"']
+    gha_groups = "GITHUB_ACTIONS" in os.environ
+    for dep_name in DEPS:
         print()
         if dep_name in disabled:
             print(f"Skipping disabled dependency {dep_name}")
             continue
-        script = build_dep(dep_name)
+        script = build_dep(dep_name, prefs, verbose)
+        if gha_groups:
+            lines.append(f"@echo ::group::Running {script}")
         lines.append(rf'cmd.exe /c "{{build_dir}}\{script}"')
         lines.append("if errorlevel 1 echo Build failed! && exit /B 1")
+        if gha_groups:
+            lines.append("@echo ::endgroup::")
     print()
     lines.append("@echo All Pillow dependencies built successfully!")
-    write_script("build_dep_all.cmd", lines)
+    write_script("build_dep_all.cmd", lines, prefs, verbose)
 
 
-def build_pillow():
-    lines = [
-        "@echo ---- Building Pillow (build_ext %*) ----",
-        cmd_cd("{pillow_dir}"),
-        *prefs["header"],
-        cmd_set("DISTUTILS_USE_SDK", "1"),  # use same compiler to build Pillow
-        cmd_set("py_vcruntime_redist", "true"),  # always use /MD, never /MT
-        r'"{python_dir}\{python_exe}" setup.py build_ext --vendor-raqm --vendor-fribidi %*',  # noqa: E501
-    ]
-
-    write_script("build_pillow.cmd", lines)
-
-
-if __name__ == "__main__":
+def main() -> None:
     winbuild_dir = os.path.dirname(os.path.realpath(__file__))
-    pillow_dir = os.path.realpath(os.path.join(winbuild_dir, ".."))
 
     parser = argparse.ArgumentParser(
         prog="winbuild\\build_prepare.py",
-        description="Download dependencies and generate build scripts for Pillow.",
+        description="Download and generate build scripts for Pillow dependencies.",
         epilog="""Arguments can also be supplied using the environment variables
-                  PILLOW_BUILD, PILLOW_DEPS, ARCHITECTURE, PYTHON, EXECUTABLE.
-                  See winbuild\\build.rst for more information.""",
+                  PILLOW_BUILD, PILLOW_DEPS, ARCHITECTURE. See winbuild\\build.rst
+                  for more information.""",
     )
     parser.add_argument(
         "-v", "--verbose", action="store_true", help="print generated scripts"
@@ -606,27 +668,17 @@ if __name__ == "__main__":
     )
     parser.add_argument(
         "--architecture",
-        choices=architectures,
+        choices=ARCHITECTURES,
         default=os.environ.get(
             "ARCHITECTURE",
-            "ARM64" if platform.machine() == "ARM64" else "x64",
+            (
+                "ARM64"
+                if platform.machine() == "ARM64"
+                else ("x86" if struct.calcsize("P") == 4 else "AMD64")
+            ),
         ),
         help="build architecture (default: same as host Python)",
     )
-    parser.add_argument(
-        "--python",
-        dest="python_dir",
-        metavar="PYTHON",
-        default=os.environ.get("PYTHON"),
-        help="Python install directory (default: use host Python)",
-    )
-    parser.add_argument(
-        "--executable",
-        dest="python_exe",
-        metavar="EXECUTABLE",
-        default=os.environ.get("EXECUTABLE", "python.exe"),
-        help="Python executable (default: use host Python)",
-    )
     parser.add_argument(
         "--nmake",
         dest="cmake_generator",
@@ -648,15 +700,10 @@ if __name__ == "__main__":
     )
     args = parser.parse_args()
 
-    arch_prefs = architectures[args.architecture]
+    arch_prefs = ARCHITECTURES[args.architecture]
     print("Target architecture:", args.architecture)
 
-    if args.python_dir is None:
-        args.python_dir = os.path.dirname(os.path.realpath(sys.executable))
-        args.python_exe = os.path.basename(sys.executable)
-    print("Target Python:", os.path.join(args.python_dir, args.python_exe))
-
-    msvs = find_msvs()
+    msvs = find_msvs(args.architecture)
     if msvs is None:
         msg = "Visual Studio not found. Please install Visual Studio 2017 or newer."
         raise RuntimeError(msg)
@@ -693,37 +740,34 @@ if __name__ == "__main__":
         disabled += ["fribidi"]
 
     prefs = {
-        # Python paths / preferences
-        "python_dir": args.python_dir,
-        "python_exe": args.python_exe,
         "architecture": args.architecture,
         **arch_prefs,
         # Pillow paths
-        "pillow_dir": pillow_dir,
         "winbuild_dir": winbuild_dir,
         # Build paths
+        "bin_dir": bin_dir,
         "build_dir": args.build_dir,
+        "depends_dir": args.depends_dir,
         "inc_dir": inc_dir,
         "lib_dir": lib_dir,
-        "bin_dir": bin_dir,
-        "src_dir": sources_dir,
         "license_dir": license_dir,
+        "src_dir": sources_dir,
         # Compilers / Tools
         **msvs,
         "cmake": "cmake.exe",  # TODO find CMAKE automatically
         "cmake_generator": args.cmake_generator,
         # TODO find NASM automatically
-        # script header
-        "header": sum([header, msvs["header"], ["@echo on"]], []),
     }
 
-    for k, v in deps.items():
+    for k, v in DEPS.items():
         prefs[f"dir_{k}"] = os.path.join(sources_dir, v["dir"])
 
     print()
 
-    write_script(".gitignore", ["*"])
-    build_dep_all()
-    if args.verbose:
-        print()
-    build_pillow()
+    write_script(".gitignore", ["*"], prefs, args.verbose)
+    build_env(prefs, args.verbose)
+    build_dep_all(disabled, prefs, args.verbose)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/winbuild/fribidi.cmake b/winbuild/fribidi.cmake
index 27b8d17a8..b16e0784c 100644
--- a/winbuild/fribidi.cmake
+++ b/winbuild/fribidi.cmake
@@ -2,9 +2,9 @@ cmake_minimum_required(VERSION 3.12)
 
 project(fribidi)
 
+
 add_definitions(-D_CRT_SECURE_NO_WARNINGS)
 
-include_directories(${CMAKE_CURRENT_BINARY_DIR})
 include_directories(lib)
 
 function(extract_regex_1 var text regex)
@@ -27,12 +27,20 @@ function(fribidi_conf)
 	set(PACKAGE_BUGREPORT "https://github.com/fribidi/fribidi/issues/new")
 	set(SIZEOF_INT 4)
 	set(FRIBIDI_MSVC_BUILD_PLACEHOLDER "#define FRIBIDI_BUILT_WITH_MSVC")
-	message("detected ${PACKAGE_NAME} version ${FRIBIDI_VERSION}")
-	configure_file(lib/fribidi-config.h.in lib/fribidi-config.h @ONLY)
+	message("Detected ${PACKAGE_NAME} version ${FRIBIDI_VERSION}")
+	configure_file(lib/fribidi-config.h.in ${CMAKE_CURRENT_SOURCE_DIR}/lib/fribidi-config.h @ONLY)
 endfunction()
 fribidi_conf()
 
 
+option(ARCH "Target architecture")
+if(${ARCH} STREQUAL ARM64)
+    set(GEN FALSE)
+else()
+    set(GEN TRUE)
+endif()
+message("Generate tab.i files: " ${GEN})
+
 function(prepend var prefix)
 	set(out "")
 	foreach(f ${ARGN})
@@ -56,18 +64,20 @@ macro(fribidi_definitions _TGT)
 endmacro()
 
 function(fribidi_gen _NAME _OUTNAME _PARAM)
-	set(_OUT lib/${_OUTNAME})
-	prepend(_DEP "${CMAKE_CURRENT_SOURCE_DIR}/gen.tab/" ${ARGN})
-	add_executable(gen-${_NAME}
-		gen.tab/gen-${_NAME}.c
-		gen.tab/packtab.c)
-	fribidi_definitions(gen-${_NAME})
-	target_compile_definitions(gen-${_NAME}
-		PUBLIC DONT_HAVE_FRIBIDI_CONFIG_H)
-	add_custom_command(
-		COMMAND gen-${_NAME} ${_PARAM} ${_DEP} > ${_OUT}
-		DEPENDS ${_DEP}
-		OUTPUT ${_OUT})
+	set(_OUT ${CMAKE_CURRENT_SOURCE_DIR}/lib/${_OUTNAME})
+	if(GEN)
+        prepend(_DEP "${CMAKE_CURRENT_SOURCE_DIR}/gen.tab/" ${ARGN})
+        add_executable(gen-${_NAME}
+            gen.tab/gen-${_NAME}.c
+            gen.tab/packtab.c)
+        fribidi_definitions(gen-${_NAME})
+        target_compile_definitions(gen-${_NAME}
+            PUBLIC DONT_HAVE_FRIBIDI_CONFIG_H)
+        add_custom_command(
+            COMMAND gen-${_NAME} ${_PARAM} ${_DEP} > ${_OUT}
+            DEPENDS ${_DEP}
+            OUTPUT ${_OUT})
+    endif(GEN)
 	list(APPEND FRIBIDI_SOURCES_GENERATED "${_OUT}")
 	set(FRIBIDI_SOURCES_GENERATED ${FRIBIDI_SOURCES_GENERATED} PARENT_SCOPE)
 endfunction()
@@ -78,8 +88,10 @@ fribidi_gen(unicode-version fribidi-unicode-version.h ""
 
 macro(fribidi_tab _NAME)
 	fribidi_gen(${_NAME}-tab ${_NAME}.tab.i 2 ${ARGN})
-	target_sources(gen-${_NAME}-tab
-		PRIVATE lib/fribidi-unicode-version.h)
+	if(GEN)
+        target_sources(gen-${_NAME}-tab
+            PRIVATE lib/fribidi-unicode-version.h)
+	endif(GEN)
 endmacro()
 
 fribidi_tab(bidi-type unidata/UnicodeData.txt)
@@ -89,14 +101,16 @@ fribidi_tab(mirroring unidata/BidiMirroring.txt)
 fribidi_tab(brackets unidata/BidiBrackets.txt unidata/UnicodeData.txt)
 fribidi_tab(brackets-type unidata/BidiBrackets.txt)
 
+add_custom_target(fribidi-gen DEPENDS ${FRIBIDI_SOURCES_GENERATED})
+
 
 file(GLOB FRIBIDI_SOURCES lib/*.c)
 file(GLOB FRIBIDI_HEADERS lib/*.h)
 
 add_library(fribidi SHARED
-	${FRIBIDI_SOURCES}
-	${FRIBIDI_HEADERS}
-	${FRIBIDI_SOURCES_GENERATED})
+    ${FRIBIDI_SOURCES}
+    ${FRIBIDI_HEADERS}
+    ${FRIBIDI_SOURCES_GENERATED})
 fribidi_definitions(fribidi)
 target_compile_definitions(fribidi
-	PUBLIC "-DFRIBIDI_BUILD")
+    PUBLIC "-DFRIBIDI_BUILD")