Merge branch 'main' into build-editable

.appveyor.yml

@@ -6,6 +6,7 @@ init:
 # Uncomment previous line to get RDP access during the build.
 
 environment:
+  COVERAGE_CORE: sysmon
   EXECUTABLE: python.exe
   TEST_OPTIONS:
   DEPLOY: YES

.ci/requirements-mypy.txt

@@ -0,0 +1 @@
+mypy==1.8.0

.github/FUNDING.yml

@@ -1 +1 @@
-tidelift: "pypi/Pillow"
+tidelift: "pypi/pillow"

.github/workflows/docs.yml

@@ -7,10 +7,12 @@ on:
     paths:
       - ".github/workflows/docs.yml"
       - "docs/**"
+      - "src/PIL/**"
   pull_request:
     paths:
       - ".github/workflows/docs.yml"
       - "docs/**"
+      - "src/PIL/**"
   workflow_dispatch:
 
 permissions:

.github/workflows/test-cygwin.yml

@@ -26,6 +26,9 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  COVERAGE_CORE: sysmon
+
 jobs:
   build:
     runs-on: windows-latest

.github/workflows/test-mingw.yml

@@ -26,6 +26,9 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  COVERAGE_CORE: sysmon
+
 jobs:
   build:
     runs-on: windows-latest
@@ -64,10 +67,10 @@ jobs:
               mingw-w64-x86_64-python3-cffi \
               mingw-w64-x86_64-python3-numpy \
               mingw-w64-x86_64-python3-olefile \
-              mingw-w64-x86_64-python3-pip \
               mingw-w64-x86_64-python3-setuptools \
               mingw-w64-x86_64-python-pyqt6
 
+          python3 -m ensurepip
           python3 -m pip install pyroma pytest pytest-cov pytest-timeout
 
           pushd depends && ./install_extra_test_images.sh && popd

.github/workflows/test-windows.yml

@@ -26,13 +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", "3.13"]
+        python-version: ["pypy3.10", "pypy3.9", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13.0-alpha.3"]
 
     timeout-minutes: 30
 
@@ -66,8 +69,16 @@ jobs:
     - name: Print build system information
       run: python3 .github/workflows/system-info.py
 
-    - name: python3 -m pip install pytest pytest-cov pytest-timeout defusedxml olefile pyroma
-      run: python3 -m pip install pytest pytest-cov pytest-timeout defusedxml olefile pyroma
+    - name: Install Python dependencies
+      run: >
+        python3 -m pip install
+        coverage>=7.4.2
+        defusedxml
+        olefile
+        pyroma
+        pytest
+        pytest-cov
+        pytest-timeout
 
     - name: Install dependencies
       id: install

.github/workflows/test.yml

@@ -27,6 +27,7 @@ concurrency:
   cancel-in-progress: true
 
 env:
+  COVERAGE_CORE: sysmon
   FORCE_COLOR: 1
 
 jobs:

.github/workflows/wheels-dependencies.sh

@@ -19,7 +19,7 @@ FREETYPE_VERSION=2.13.2
 HARFBUZZ_VERSION=8.3.0
 LIBPNG_VERSION=1.6.40
 JPEGTURBO_VERSION=3.0.1
-OPENJPEG_VERSION=2.5.0
+OPENJPEG_VERSION=2.5.2
 XZ_VERSION=5.4.5
 TIFF_VERSION=4.6.0
 LCMS2_VERSION=2.16
@@ -40,7 +40,7 @@ BROTLI_VERSION=1.1.0
 
 if [[ -n "$IS_MACOS" ]] && [[ "$CIBW_ARCHS" == "x86_64" ]]; then
     function build_openjpeg {
-        local out_dir=$(fetch_unpack https://github.com/uclouvain/openjpeg/archive/v${OPENJPEG_VERSION}.tar.gz openjpeg-2.5.0.tar.gz)
+        local out_dir=$(fetch_unpack https://github.com/uclouvain/openjpeg/archive/v${OPENJPEG_VERSION}.tar.gz openjpeg-${OPENJPEG_VERSION}.tar.gz)
         (cd $out_dir \
             && cmake -DCMAKE_INSTALL_PREFIX=$BUILD_PREFIX -DCMAKE_INSTALL_NAME_DIR=$BUILD_PREFIX/lib . \
             && make install)
@@ -62,7 +62,7 @@ function build_brotli {
 
 function build {
     if [[ -n "$IS_MACOS" ]] && [[ "$CIBW_ARCHS" == "arm64" ]]; then
-        export BUILD_PREFIX="/usr/local"
+        sudo chown -R runner /usr/local
     fi
     build_xz
     if [ -z "$IS_ALPINE" ] && [ -z "$IS_MACOS" ]; then
@@ -75,8 +75,8 @@ function build {
         build_simple xorgproto 2023.2 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
-        if [ -f /Library/Frameworks/Python.framework/Versions/Current/share/pkgconfig/xcb-proto.pc ]; then
-            cp /Library/Frameworks/Python.framework/Versions/Current/share/pkgconfig/xcb-proto.pc /Library/Frameworks/Python.framework/Versions/Current/lib/pkgconfig/xcb-proto.pc
+        if [[ "$CIBW_ARCHS" == "arm64" ]]; then
+            cp /usr/local/share/pkgconfig/xcb-proto.pc /usr/local/lib/pkgconfig
         fi
     else
         sed s/\${pc_sysrootdir\}// /usr/local/share/pkgconfig/xcb-proto.pc > /usr/local/lib/pkgconfig/xcb-proto.pc
@@ -87,12 +87,10 @@ function build {
     build_tiff
     build_libpng
     build_lcms2
-    if [[ -n "$IS_MACOS" ]] && [[ "$CIBW_ARCHS" == "arm64" ]]; then
-        for dylib in libjpeg.dylib libtiff.dylib liblcms2.dylib; do
-            cp $BUILD_PREFIX/lib/$dylib /opt/arm64-builds/lib
-        done
-    fi
     build_openjpeg
+    if [ -f /usr/local/lib64/libopenjp2.so ]; then
+        cp /usr/local/lib64/libopenjp2.so /usr/local/lib
+    fi
 
     ORIGINAL_CFLAGS=$CFLAGS
     CFLAGS="$CFLAGS -O3 -DNDEBUG"
@@ -128,14 +126,19 @@ curl -fsSL -o pillow-depends-main.zip https://github.com/python-pillow/pillow-de
 untar pillow-depends-main.zip
 
 if [[ -n "$IS_MACOS" ]]; then
-  # webp, libtiff, libxcb cause a conflict with building webp, libtiff, libxcb
+  # libtiff and libxcb cause a conflict with building libtiff and libxcb
   # libxau and libxdmcp cause an issue on macOS < 11
-  # if php is installed, brew tries to reinstall these after installing openblas
   # remove cairo to fix building harfbuzz on arm64
   # remove lcms2 and libpng to fix building openjpeg on arm64
-  # remove zstd to avoid inclusion on x86_64
+  # remove jpeg-turbo to avoid inclusion on arm64
+  # remove webp and zstd to avoid inclusion on x86_64
   # curl from brew requires zstd, use system curl
-  brew remove --ignore-dependencies webp libpng libtiff libxcb libxau libxdmcp curl php cairo lcms2 ghostscript zstd
+  brew remove --ignore-dependencies libpng libtiff libxcb libxau libxdmcp curl cairo lcms2 zstd
+  if [[ "$CIBW_ARCHS" == "arm64" ]]; then
+    brew remove --ignore-dependencies jpeg-turbo
+  else
+    brew remove --ignore-dependencies webp
+  fi
 
   brew install pkg-config
 fi

.github/workflows/wheels-test.sh

@@ -4,6 +4,9 @@ set -e
 if [[ "$OSTYPE" == "darwin"* ]]; then
     brew install fribidi
     export PKG_CONFIG_PATH="/usr/local/opt/openblas/lib/pkgconfig"
+    if [ -f /opt/homebrew/lib/libfribidi.dylib ]; then
+        sudo cp /opt/homebrew/lib/libfribidi.dylib /usr/local/lib
+    fi
 elif [ "${AUDITWHEEL_POLICY::9}" == "musllinux" ]; then
     apk add curl fribidi
 else

.github/workflows/wheels.yml

@@ -101,7 +101,7 @@ jobs:
             cibw_arch: x86_64
             macosx_deployment_target: "10.10"
           - name: "macOS arm64"
-            os: macos-latest
+            os: macos-14
             cibw_arch: arm64
             macosx_deployment_target: "11.0"
           - name: "manylinux2014 and musllinux x86_64"
@@ -134,7 +134,7 @@ jobs:
           CIBW_MANYLINUX_PYPY_X86_64_IMAGE: ${{ matrix.manylinux }}
           CIBW_MANYLINUX_X86_64_IMAGE: ${{ matrix.manylinux }}
           CIBW_SKIP: pp38-*
-          CIBW_TEST_SKIP: "*-macosx_arm64"
+          CIBW_TEST_SKIP: cp38-macosx_arm64
           MACOSX_DEPLOYMENT_TARGET: ${{ matrix.macosx_deployment_target }}
 
       - uses: actions/upload-artifact@v4

CHANGES.rst

@@ -5,6 +5,21 @@ Changelog (Pillow)
 10.3.0 (unreleased)
 -------------------
 
+- 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]
 

README.md

@@ -64,7 +64,7 @@ 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>
+                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>
@@ -82,9 +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"

RELEASING.md

@@ -86,7 +86,7 @@ Released as needed privately to individual vendors for critical security-related
 
 ## 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
 

Tests/check_imaging_leaks.py

@@ -23,7 +23,10 @@ def _get_mem_usage() -> float:
 
 
 def _test_leak(
-    min_iterations: int, max_iterations: int, fn: Callable[..., None], *args: Any
+    min_iterations: int,
+    max_iterations: int,
+    fn: Callable[..., Image.Image | None],
+    *args: Any,
 ) -> None:
     mem_limit = None
     for i in range(max_iterations):

Tests/check_png_dos.py

@@ -17,6 +17,7 @@ def test_ignore_dos_text() -> None:
     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"
 
@@ -32,6 +33,7 @@ def test_dos_text() -> None:
         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"
 
@@ -57,6 +59,7 @@ def test_dos_total_memory() -> None:
         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"

Tests/helper.py

@@ -351,7 +351,7 @@ def is_mingw() -> bool:
 
 
 class CachedProperty:
-    def __init__(self, func: Callable[[Any], None]) -> None:
+    def __init__(self, func: Callable[[Any], Any]) -> None:
         self.func = func
 
     def __get__(self, instance: Any, cls: type[Any] | None = None) -> Any:

Tests/test_deprecate.py

@@ -20,7 +20,7 @@ from PIL import _deprecate
         ),
     ],
 )
-def test_version(version, expected) -> None:
+def test_version(version: int | None, expected: str) -> None:
     with pytest.warns(DeprecationWarning, match=expected):
         _deprecate.deprecate("Old thing", version, "new thing")
 
@@ -46,7 +46,7 @@ def test_unknown_version() -> None:
         ),
     ],
 )
-def test_old_version(deprecated, plural, expected) -> None:
+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)
@@ -76,7 +76,7 @@ def test_replacement_and_action() -> None:
         "Upgrade to new thing.",
     ],
 )
-def test_action(action) -> None:
+def test_action(action: str) -> None:
     expected = (
         r"Old thing is deprecated and will be removed in Pillow 11 \(2024-10-15\)\. "
         r"Upgrade to new thing\."

Tests/test_features.py

@@ -2,6 +2,7 @@ from __future__ import annotations
 
 import io
 import re
+from typing import Callable
 
 import pytest
 
@@ -29,7 +30,7 @@ def test_version() -> None:
     # Check the correctness of the convenience function
     # and the format of version numbers
 
-    def test(name, function) -> None:
+    def test(name: str, function: Callable[[str], bool]) -> None:
         version = features.version(name)
         if not features.check(name):
             assert version is None
@@ -73,12 +74,12 @@ def test_libimagequant_version() -> None:
 
 
 @pytest.mark.parametrize("feature", features.modules)
-def test_check_modules(feature) -> None:
+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) -> None:
+def test_check_codecs(feature: str) -> None:
     assert features.check_codec(feature) in [True, False]
 
 

Tests/test_file_blp.py

@@ -71,7 +71,7 @@ def test_save(tmp_path: Path) -> None:
         "Tests/images/timeout-ef9112a065e7183fa7faa2e18929b03e44ee16bf.blp",
     ],
 )
-def test_crashes(test_file) -> None:
+def test_crashes(test_file: str) -> None:
     with open(test_file, "rb") as f:
         with Image.open(f) as im:
             with pytest.raises(OSError):

Tests/test_file_bmp.py

@@ -16,7 +16,7 @@ from .helper import (
 
 
 def test_sanity(tmp_path: Path) -> None:
-    def roundtrip(im) -> None:
+    def roundtrip(im: Image.Image) -> None:
         outfile = str(tmp_path / "temp.bmp")
 
         im.save(outfile, "BMP")
@@ -194,7 +194,7 @@ def test_rle4() -> None:
         ("Tests/images/bmp/g/pal8rle.bmp", 1064),
     ),
 )
-def test_rle8_eof(file_name, length) -> None:
+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:

Tests/test_file_container.py

@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+from typing import Literal
+
 import pytest
 
 from PIL import ContainerIO, Image
@@ -21,9 +23,16 @@ def test_isatty() -> None:
     assert container.isatty() is False
 
 
-def test_seek_mode_0() -> None:
+@pytest.mark.parametrize(
+    "mode, expected_position",
+    (
+        (0, 33),
+        (1, 66),
+        (2, 100),
+    ),
+)
+def test_seek_mode(mode: Literal[0, 1, 2], expected_position: int) -> None:
     # Arrange
-    mode = 0
     with open(TEST_FILE, "rb") as fh:
         container = ContainerIO.ContainerIO(fh, 22, 100)
 
@@ -32,35 +41,7 @@ def test_seek_mode_0() -> None:
         container.seek(33, mode)
 
         # Assert
-        assert container.tell() == 33
-
-
-def test_seek_mode_1() -> None:
-    # 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() -> None:
-    # 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))

Tests/test_file_fli.py

@@ -4,7 +4,7 @@ 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
 
@@ -12,9 +12,12 @@ 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() -> None:
     with Image.open(static_test_file) as im:
@@ -32,6 +35,24 @@ def test_sanity() -> None:
         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() -> None:
     def open() -> None:

Tests/test_file_gif.py

@@ -1113,6 +1113,21 @@ def test_append_images(tmp_path: Path) -> None:
         assert reread.n_frames == 10
 
 
+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.

Tests/test_file_ico.py

@@ -135,7 +135,7 @@ def test_different_bit_depths(tmp_path: Path) -> None:
 
 
 @pytest.mark.parametrize("mode", ("1", "L", "P", "RGB", "RGBA"))
-def test_save_to_bytes_bmp(mode) -> None:
+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)])

Tests/test_file_im.py

@@ -82,7 +82,7 @@ def test_eoferror() -> None:
 
 
 @pytest.mark.parametrize("mode", ("RGB", "P", "PA"))
-def test_roundtrip(mode, tmp_path: Path) -> None:
+def test_roundtrip(mode: str, tmp_path: Path) -> None:
     out = str(tmp_path / "temp.im")
     im = hopper(mode)
     im.save(out)

Tests/test_file_iptc.py

@@ -98,7 +98,7 @@ def test_i() -> None:
     assert ret == 97
 
 
-def test_dump(monkeypatch) -> None:
+def test_dump(monkeypatch: pytest.MonkeyPatch) -> None:
     # Arrange
     c = b"abc"
     # Temporarily redirect stdout

Tests/test_file_jpeg.py

@@ -6,7 +6,7 @@ import warnings
 from io import BytesIO
 from pathlib import Path
 from types import ModuleType
-from typing import Any
+from typing import Any, cast
 
 import pytest
 
@@ -45,14 +45,20 @@ TEST_FILE = "Tests/images/hopper.jpg"
 
 @skip_unless_feature("jpg")
 class TestFileJpeg:
-    def roundtrip(self, im: Image.Image, **options: Any) -> Image.Image:
+    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 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
@@ -246,13 +252,13 @@ class TestFileJpeg:
             im.save(f, progressive=True, quality=94, exif=b" " * 43668)
 
     def test_optimize(self) -> None:
-        im1 = self.roundtrip(hopper())
-        im2 = self.roundtrip(hopper(), optimize=0)
-        im3 = self.roundtrip(hopper(), optimize=1)
+        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: Path) -> None:
         # https://github.com/python-pillow/Pillow/issues/148
@@ -262,15 +268,15 @@ class TestFileJpeg:
         im.save(f, format="JPEG", optimize=True)
 
     def test_progressive(self) -> None:
-        im1 = self.roundtrip(hopper())
+        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: Path) -> None:
         f = str(tmp_path / "temp.jpg")
@@ -341,6 +347,7 @@ 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) == {}
 
@@ -419,14 +426,14 @@ class TestFileJpeg:
         assert im3.info.get("progression")
 
     def test_quality(self) -> None:
-        im1 = self.roundtrip(hopper())
-        im2 = self.roundtrip(hopper(), quality=50)
+        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) -> None:
         im1 = self.roundtrip(hopper())

Tests/test_file_jpeg2k.py

@@ -40,10 +40,8 @@ test_card.load()
 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
 
@@ -77,7 +75,9 @@ def test_invalid_file() -> None:
 def test_bytesio() -> 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, test_card, 1.0e-3)
 
 
 # These two test pre-written JPEG 2000 files that were not written with
@@ -340,6 +340,7 @@ def test_parser_feed() -> None:
     p.feed(data)
 
     # Assert
+    assert p.image is not None
     assert p.image.size == (640, 480)
 
 

Tests/test_file_libtiff.py

@@ -27,7 +27,7 @@ from .helper import (
 
 @skip_unless_feature("libtiff")
 class LibTiffTestCase:
-    def _assert_noerr(self, tmp_path: Path, im: Image.Image) -> None:
+    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"
@@ -524,7 +524,8 @@ class TestFileLibTiff(LibTiffTestCase):
             im.save(out, compression=compression)
 
     def test_fp_leak(self) -> None:
-        im = Image.open("Tests/images/hopper_g4_500.tif")
+        im: Image.Image | None = Image.open("Tests/images/hopper_g4_500.tif")
+        assert im is not None
         fn = im.fp.fileno()
 
         os.fstat(fn)
@@ -716,6 +717,7 @@ 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.
@@ -1097,6 +1099,7 @@ class TestFileLibTiff(LibTiffTestCase):
 
         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))
@@ -1113,6 +1116,7 @@ class TestFileLibTiff(LibTiffTestCase):
             im.save(out, **arguments)
 
             with Image.open(out) as im:
+                assert isinstance(im, TiffImagePlugin.TiffImageFile)
                 assert len(im.tag_v2[STRIPOFFSETS]) == 1
         finally:
             TiffImagePlugin.STRIP_SIZE = 65536

Tests/test_file_mcidas.py

@@ -19,7 +19,7 @@ def test_valid_file() -> None:
     # 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:

Tests/test_file_mpo.py

@@ -2,11 +2,11 @@ from __future__ import annotations
 
 import warnings
 from io import BytesIO
-from typing import Any
+from typing import Any, cast
 
 import pytest
 
-from PIL import Image
+from PIL import Image, MpoImagePlugin
 
 from .helper import (
     assert_image_equal,
@@ -20,14 +20,11 @@ test_files = ["Tests/images/sugarshack.mpo", "Tests/images/frozenpond.mpo"]
 pytestmark = skip_unless_feature("jpg")
 
 
-def roundtrip(im: Image.Image, **options: Any) -> Image.Image:
+def roundtrip(im: Image.Image, **options: Any) -> MpoImagePlugin.MpoImageFile:
     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 cast(MpoImagePlugin.MpoImageFile, Image.open(out))
 
 
 @pytest.mark.parametrize("test_file", test_files)

Tests/test_file_msp.py

@@ -52,7 +52,7 @@ def test_open_windows_v1() -> None:
         assert isinstance(im, MspImagePlugin.MspImageFile)
 
 
-def _assert_file_image_equal(source_path, target_path) -> None:
+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)
 

Tests/test_file_pcx.py

@@ -9,7 +9,7 @@ from PIL import Image, ImageFile, PcxImagePlugin
 from .helper import assert_image_equal, hopper
 
 
-def _roundtrip(tmp_path: Path, im) -> None:
+def _roundtrip(tmp_path: Path, im: Image.Image) -> None:
     f = str(tmp_path / "temp.pcx")
     im.save(f)
     with Image.open(f) as im2:
@@ -44,7 +44,7 @@ def test_invalid_file() -> None:
 
 
 @pytest.mark.parametrize("mode", ("1", "L", "P", "RGB"))
-def test_odd(tmp_path: Path, mode) -> None:
+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.
@@ -89,7 +89,7 @@ def test_large_count(tmp_path: Path) -> None:
     _roundtrip(tmp_path, im)
 
 
-def _test_buffer_overflow(tmp_path: Path, im, size: int = 1024) -> None:
+def _test_buffer_overflow(tmp_path: Path, im: Image.Image, size: int = 1024) -> None:
     _last = ImageFile.MAXBLOCK
     ImageFile.MAXBLOCK = size
     try:

Tests/test_file_pdf.py

@@ -6,6 +6,7 @@ import os.path
 import tempfile
 import time
 from pathlib import Path
+from typing import Any, Generator
 
 import pytest
 
@@ -14,7 +15,7 @@ from PIL import Image, PdfParser, features
 from .helper import hopper, mark_if_feature_version, skip_unless_feature
 
 
-def helper_save_as_pdf(tmp_path: 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"))
@@ -41,13 +42,13 @@ def helper_save_as_pdf(tmp_path: Path, mode, **kwargs):
 
 
 @pytest.mark.parametrize("mode", ("L", "P", "RGB", "CMYK"))
-def test_save(tmp_path: Path, mode) -> None:
+def test_save(tmp_path: Path, mode: str) -> None:
     helper_save_as_pdf(tmp_path, mode)
 
 
 @skip_unless_feature("jpg_2000")
 @pytest.mark.parametrize("mode", ("LA", "RGBA"))
-def test_save_alpha(tmp_path: Path, mode) -> None:
+def test_save_alpha(tmp_path: Path, mode: str) -> None:
     helper_save_as_pdf(tmp_path, mode)
 
 
@@ -112,7 +113,7 @@ def test_resolution(tmp_path: Path) -> None:
         {"dpi": (75, 150), "resolution": 200},
     ),
 )
-def test_dpi(params, tmp_path: Path) -> None:
+def test_dpi(params: dict[str, int | tuple[int, int]], tmp_path: Path) -> None:
     im = hopper()
 
     outfile = str(tmp_path / "temp.pdf")
@@ -156,7 +157,7 @@ def test_save_all(tmp_path: Path) -> None:
         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))
@@ -226,7 +227,7 @@ def test_pdf_append_fails_on_nonexistent_file() -> None:
             im.save(os.path.join(temp_dir, "nonexistent.pdf"), append=True)
 
 
-def check_pdf_pages_consistency(pdf) -> None:
+def check_pdf_pages_consistency(pdf: PdfParser.PdfParser) -> None:
     pages_info = pdf.read_indirect(pdf.pages_ref)
     assert b"Parent" not in pages_info
     assert b"Kids" in pages_info
@@ -339,7 +340,7 @@ def test_pdf_append_to_bytesio() -> None:
 @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) -> None:
+def test_redos(newline: bytes) -> None:
     malicious = b" trailer<<>>" + newline * 3456
 
     # This particular exception isn't relevant here.

Tests/test_file_png.py

@@ -6,7 +6,8 @@ import warnings
 import zlib
 from io import BytesIO
 from pathlib import Path
-from typing import Any
+from types import ModuleType
+from typing import Any, cast
 
 import pytest
 
@@ -23,6 +24,7 @@ from .helper import (
     skip_unless_feature,
 )
 
+ElementTree: ModuleType | None
 try:
     from defusedxml import ElementTree
 except ImportError:
@@ -57,11 +59,11 @@ def load(data: bytes) -> Image.Image:
     return Image.open(BytesIO(data))
 
 
-def roundtrip(im: Image.Image, **options: Any) -> Image.Image:
+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")
@@ -100,7 +102,7 @@ class TestFilePng:
             im = hopper(mode)
             im.save(test_file)
             with Image.open(test_file) as reloaded:
-                if mode in ("I;16", "I;16B"):
+                if mode in ("I", "I;16B"):
                     reloaded = reloaded.convert(mode)
                 assert_image_equal(reloaded, im)
 
@@ -302,8 +304,8 @@ class TestFilePng:
         assert im.getcolors() == [(100, (0, 0, 0, 0))]
 
     def test_save_grayscale_transparency(self, tmp_path: Path) -> None:
-        for mode, num_transparent in {"1": 1994, "L": 559, "I": 559}.items():
-            in_file = "Tests/images/" + mode.lower() + "_trns.png"
+        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
@@ -781,6 +783,18 @@ class TestFilePng:
         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")

Tests/test_file_ppm.py

@@ -88,7 +88,7 @@ def test_16bit_pgm() -> None:
         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: Path) -> None:

Tests/test_file_psd.py

@@ -157,7 +157,7 @@ def test_combined_larger_than_size() -> None:
         ("Tests/images/timeout-dedc7a4ebd856d79b4359bbcc79e8ef231ce38f6.psd", OSError),
     ],
 )
-def test_crashes(test_file, raises) -> None:
+def test_crashes(test_file: str, raises) -> None:
     with open(test_file, "rb") as f:
         with pytest.raises(raises):
             with Image.open(f):

Tests/test_file_spider.py

@@ -9,7 +9,7 @@ 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"
 
@@ -160,4 +160,5 @@ def test_odd_size() -> None:
     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)

Tests/test_file_tga.py

@@ -22,8 +22,8 @@ _ORIGIN_TO_ORIENTATION = {"tl": 1, "bl": -1}
 
 
 @pytest.mark.parametrize("mode", _MODES)
-def test_sanity(mode, tmp_path: Path) -> None:
-    def roundtrip(original_im) -> None:
+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)

Tests/test_file_tiff.py

@@ -4,6 +4,8 @@ import os
 import warnings
 from io import BytesIO
 from pathlib import Path
+from types import ModuleType
+from typing import Generator
 
 import pytest
 
@@ -20,6 +22,7 @@ from .helper import (
     is_win32,
 )
 
+ElementTree: ModuleType | None
 try:
     from defusedxml import ElementTree
 except ImportError:
@@ -156,7 +159,7 @@ class TestFileTiff:
         "resolution_unit, dpi",
         [(None, 72.8), (2, 72.8), (3, 184.912)],
     )
-    def test_load_float_dpi(self, resolution_unit, dpi) -> None:
+    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:
@@ -284,7 +287,7 @@ class TestFileTiff:
             ("Tests/images/multipage.tiff", 3),
         ),
     )
-    def test_n_frames(self, path, n_frames) -> None:
+    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)
@@ -402,7 +405,7 @@ class TestFileTiff:
             assert len_before == len_after + 1
 
     @pytest.mark.parametrize("legacy_api", (False, True))
-    def test_load_byte(self, legacy_api) -> None:
+    def test_load_byte(self, legacy_api: bool) -> None:
         ifd = TiffImagePlugin.ImageFileDirectory_v2()
         data = b"abc"
         ret = ifd.load_byte(data, legacy_api)
@@ -431,7 +434,7 @@ class TestFileTiff:
             assert 0x8825 in im.tag_v2
 
     def test_exif(self, tmp_path: Path) -> None:
-        def check_exif(exif) -> None:
+        def check_exif(exif: Image.Exif) -> None:
             assert sorted(exif.keys()) == [
                 256,
                 257,
@@ -511,7 +514,7 @@ class TestFileTiff:
             assert im.getexif()[273] == (1408, 1907)
 
     @pytest.mark.parametrize("mode", ("1", "L"))
-    def test_photometric(self, mode, tmp_path: Path) -> None:
+    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})
@@ -620,6 +623,7 @@ class TestFileTiff:
         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:
@@ -660,7 +664,7 @@ class TestFileTiff:
                 assert_image_equal_tofile(reloaded, infile)
 
     @pytest.mark.parametrize("mode", ("P", "PA"))
-    def test_palette(self, mode, tmp_path: Path) -> None:
+    def test_palette(self, mode: str, tmp_path: Path) -> None:
         outfile = str(tmp_path / "temp.tif")
 
         im = hopper(mode)
@@ -689,7 +693,7 @@ 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()
@@ -860,7 +864,7 @@ class TestFileTiff:
         ],
     )
     @pytest.mark.timeout(2)
-    def test_oom(self, test_file) -> None:
+    def test_oom(self, test_file: str) -> None:
         with pytest.raises(UnidentifiedImageError):
             with pytest.warns(UserWarning):
                 with Image.open(test_file):

Tests/test_file_tiff_metadata.py

@@ -189,7 +189,9 @@ def test_iptc(tmp_path: Path) -> None:
 
 
 @pytest.mark.parametrize("value, expected", ((b"test", "test"), (1, "1")))
-def test_writing_other_types_to_ascii(value, expected, tmp_path: Path) -> None:
+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]
@@ -206,7 +208,7 @@ def test_writing_other_types_to_ascii(value, expected, tmp_path: Path) -> None:
 
 
 @pytest.mark.parametrize("value", (1, IFDRational(1)))
-def test_writing_other_types_to_bytes(value, tmp_path: Path) -> None:
+def test_writing_other_types_to_bytes(value: int | IFDRational, tmp_path: Path) -> None:
     im = hopper()
     info = TiffImagePlugin.ImageFileDirectory_v2()
 

Tests/test_format_hsv.py

@@ -2,21 +2,18 @@ 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)
 
@@ -25,7 +22,7 @@ def test_sanity() -> None:
     Image.new("HSV", (100, 100))
 
 
-def wedge():
+def wedge() -> Image.Image:
     w = Image._wedge()
     w90 = w.rotate(90)
 
@@ -49,7 +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()
@@ -70,11 +71,11 @@ 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")
 
 

Tests/test_image.py

@@ -138,13 +138,13 @@ class TestImage:
         assert im.height == 2
 
         with pytest.raises(AttributeError):
-            im.size = (3, 4)
+            im.size = (3, 4)  # type: ignore[misc]
 
     def test_set_mode(self) -> None:
         im = Image.new("RGB", (1, 1))
 
         with pytest.raises(AttributeError):
-            im.mode = "P"
+            im.mode = "P"  # type: ignore[misc]
 
     def test_invalid_image(self) -> None:
         im = io.BytesIO(b"")
@@ -685,15 +685,18 @@ class TestImage:
         _make_new(im, blank_p, ImagePalette.ImagePalette())
         _make_new(im, blank_pa, ImagePalette.ImagePalette())
 
-    def test_p_from_rgb_rgba(self) -> None:
-        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: Path) -> None:
         # https://github.com/python-pillow/Pillow/issues/835

Tests/test_image_access.py

@@ -14,6 +14,7 @@ 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
+cffi: ModuleType | None
 if os.environ.get("PYTHONOPTIMIZE") == "2":
     cffi = None
 else:

Tests/test_image_filter.py

@@ -148,9 +148,7 @@ def test_kernel_not_enough_coefficients() -> None:
 @pytest.mark.parametrize("mode", ("L", "LA", "I", "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
@@ -160,23 +158,13 @@ def test_consistency_3x3(mode: str) -> None:
                 # 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: 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
@@ -188,14 +176,6 @@ def test_consistency_5x5(mode: str) -> None:
                 # 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)
 
 

Tests/test_image_fromqimage.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 import warnings
-from typing import Generator
 
 import pytest
 
@@ -17,19 +16,16 @@ pytestmark = pytest.mark.skipif(
     not ImageQt.qt_is_installed, reason="Qt bindings are not installed"
 )
 
+ims = [
+    hopper(),
+    Image.open("Tests/images/transparent.png"),
+    Image.open("Tests/images/7x13.png"),
+]
 
-@pytest.fixture
-def test_images() -> Generator[Image.Image, None, None]:
-    ims = [
-        hopper(),
-        Image.open("Tests/images/transparent.png"),
-        Image.open("Tests/images/7x13.png"),
-    ]
-    try:
-        yield ims
-    finally:
-        for im in ims:
-            im.close()
+
+def teardown_module() -> None:
+    for im in ims:
+        im.close()
 
 
 def roundtrip(expected: Image.Image) -> None:
@@ -44,26 +40,26 @@ def roundtrip(expected: Image.Image) -> None:
         assert_image_equal(result, expected.convert("RGB"))
 
 
-def test_sanity_1(test_images: Generator[Image.Image, None, None]) -> None:
-    for im in test_images:
+def test_sanity_1() -> None:
+    for im in ims:
         roundtrip(im.convert("1"))
 
 
-def test_sanity_rgb(test_images: Generator[Image.Image, None, None]) -> None:
-    for im in test_images:
+def test_sanity_rgb() -> None:
+    for im in ims:
         roundtrip(im.convert("RGB"))
 
 
-def test_sanity_rgba(test_images: Generator[Image.Image, None, None]) -> None:
-    for im in test_images:
+def test_sanity_rgba() -> None:
+    for im in ims:
         roundtrip(im.convert("RGBA"))
 
 
-def test_sanity_l(test_images: Generator[Image.Image, None, None]) -> None:
-    for im in test_images:
+def test_sanity_l() -> None:
+    for im in ims:
         roundtrip(im.convert("L"))
 
 
-def test_sanity_p(test_images: Generator[Image.Image, None, None]) -> None:
-    for im in test_images:
+def test_sanity_p() -> None:
+    for im in ims:
         roundtrip(im.convert("P"))

Tests/test_image_paste.py

@@ -8,7 +8,6 @@ from .helper import CachedProperty, assert_image_equal
 
 
 class TestImagingPaste:
-    masks = {}
     size = 128
 
     def assert_9points_image(
@@ -33,7 +32,7 @@ class TestImagingPaste:
     def assert_9points_paste(
         self,
         im: Image.Image,
-        im2: Image.Image,
+        im2: Image.Image | str | tuple[int, ...],
         mask: Image.Image,
         expected: list[tuple[int, int, int, int]],
     ) -> None:

Tests/test_image_resample.py

@@ -237,7 +237,7 @@ class TestCoreResampleConsistency:
         im = Image.new(mode, (512, 9), fill)
         return im.resize((9, 512), Image.Resampling.LANCZOS), im.load()[0, 0]
 
-    def run_case(self, case: tuple[Image.Image, Image.Image]) -> None:
+    def run_case(self, case: tuple[Image.Image, int | tuple[int, ...]]) -> None:
         channel, color = case
         px = channel.load()
         for x in range(channel.size[0]):

Tests/test_image_resize.py

@@ -154,7 +154,7 @@ class TestImagingCoreResize:
 
     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: Path) -> None:
         # This test is intended for only check for consistent behaviour across

Tests/test_imagechops.py

@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+from typing import Callable
+
 from PIL import Image, ImageChops
 
 from .helper import assert_image_equal, hopper
@@ -387,7 +389,9 @@ def test_overlay() -> None:
 
 
 def test_logical() -> None:
-    def table(op, a, b):
+    def table(
+        op: Callable[[Image.Image, Image.Image], Image.Image], a: int, b: int
+    ) -> tuple[int, int, int, int]:
         out = []
         for x in (a, b):
             imx = Image.new("1", (1, 1), x)

Tests/test_imagecms.py

@@ -6,6 +6,7 @@ import re
 import shutil
 from io import BytesIO
 from pathlib import Path
+from typing import Any
 
 import pytest
 
@@ -237,7 +238,7 @@ def test_invalid_color_temperature() -> None:
 
 
 @pytest.mark.parametrize("flag", ("my string", -1))
-def test_invalid_flag(flag) -> None:
+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 "
@@ -335,19 +336,21 @@ def test_extended_information() -> None:
     o = ImageCms.getOpenProfile(SRGB)
     p = o.profile
 
-    def assert_truncated_tuple_equal(tup1, tup2, digits: int = 10) -> None:
+    def assert_truncated_tuple_equal(
+        tup1: tuple[Any, ...], 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
+                for val in tuple_value
             )
 
         assert truncate_tuple(tup1) == truncate_tuple(tup2)
@@ -504,8 +507,10 @@ def test_profile_typesafety() -> None:
         ImageCms.ImageCmsProfile(1).tobytes()
 
 
-def assert_aux_channel_preserved(mode, transform_in_place, preserved_channel) -> None:
-    def create_test_image():
+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 = [
@@ -633,7 +638,7 @@ def test_auxiliary_channels_isolated() -> None:
 
 
 @pytest.mark.parametrize("mode", ("RGB", "RGBA", "RGBX"))
-def test_rgb_lab(mode) -> None:
+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)

Tests/test_imagedraw.py

@@ -753,7 +753,7 @@ def test_rectangle_I16(bbox: Coords) -> None:
     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)

Tests/test_imagedraw2.py

@@ -5,6 +5,7 @@ import os.path
 import pytest
 
 from PIL import Image, ImageDraw, ImageDraw2, features
+from PIL._typing import Coords
 
 from .helper import (
     assert_image_equal,
@@ -56,7 +57,7 @@ def test_sanity() -> None:
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_ellipse(bbox) -> None:
+def test_ellipse(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)
@@ -84,7 +85,7 @@ def test_ellipse_edge() -> None:
 
 
 @pytest.mark.parametrize("points", POINTS)
-def test_line(points) -> None:
+def test_line(points: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)
@@ -98,7 +99,7 @@ def test_line(points) -> None:
 
 
 @pytest.mark.parametrize("points", POINTS)
-def test_line_pen_as_brush(points) -> None:
+def test_line_pen_as_brush(points: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)
@@ -114,7 +115,7 @@ def test_line_pen_as_brush(points) -> None:
 
 
 @pytest.mark.parametrize("points", POINTS)
-def test_polygon(points) -> None:
+def test_polygon(points: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)
@@ -129,7 +130,7 @@ def test_polygon(points) -> None:
 
 
 @pytest.mark.parametrize("bbox", BBOX)
-def test_rectangle(bbox) -> None:
+def test_rectangle(bbox: Coords) -> None:
     # Arrange
     im = Image.new("RGB", (W, H))
     draw = ImageDraw2.Draw(im)

Tests/test_imageenhance.py

@@ -22,7 +22,7 @@ def test_crash() -> None:
     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")
 
@@ -34,7 +34,9 @@ def _half_transparent_image():
     return im
 
 
-def _check_alpha(im, original, op, amount) -> None:
+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"),
@@ -44,7 +46,7 @@ def _check_alpha(im, original, op, amount) -> None:
 
 
 @pytest.mark.parametrize("op", ("Color", "Brightness", "Contrast", "Sharpness"))
-def test_alpha(op) -> None:
+def test_alpha(op: str) -> None:
     # Issue https://github.com/python-pillow/Pillow/issues/899
     # Is alpha preserved through image enhancement?
 

Tests/test_imagefile.py

@@ -31,7 +31,7 @@ SAFEBLOCK = ImageFile.SAFEBLOCK
 
 class TestImageFile:
     def test_parser(self) -> None:
-        def roundtrip(format):
+        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")

Tests/test_imagefont.py

@@ -7,11 +7,13 @@ import shutil
 import sys
 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,
@@ -42,16 +44,16 @@ def test_sanity() -> None:
         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) -> None:
+def test_font_properties(font: ImageFont.FreeTypeFont) -> None:
     assert font.path == FONT_PATH
     assert font.size == FONT_SIZE
 
@@ -67,7 +69,9 @@ def test_font_properties(font) -> None:
     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)
@@ -80,12 +84,12 @@ def _render(font, layout_engine):
 
 
 @pytest.mark.parametrize("font", (FONT_PATH, Path(FONT_PATH)))
-def test_font_with_name(layout_engine, font) -> None:
+def test_font_with_name(layout_engine: ImageFont.Layout, font: str | Path) -> None:
     _render(font, layout_engine)
 
 
-def test_font_with_filelike(layout_engine) -> None:
-    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
@@ -102,12 +106,12 @@ def test_font_with_filelike(layout_engine) -> None:
     #   _render(shared_bytes)
 
 
-def test_font_with_open_file(layout_engine) -> None:
+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) -> None:
+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())
@@ -116,7 +120,7 @@ def test_render_equal(layout_engine) -> None:
     assert_image_equal(img_path, img_filelike)
 
 
-def test_non_ascii_path(tmp_path: Path, layout_engine) -> None:
+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)
@@ -126,7 +130,7 @@ def test_non_ascii_path(tmp_path: Path, layout_engine) -> None:
     ImageFont.truetype(tempfile, FONT_SIZE, layout_engine=layout_engine)
 
 
-def test_transparent_background(font) -> None:
+def test_transparent_background(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new(mode="RGBA", size=(300, 100))
     draw = ImageDraw.Draw(im)
 
@@ -140,7 +144,7 @@ def test_transparent_background(font) -> None:
     assert_image_similar_tofile(im.convert("L"), target, 0.01)
 
 
-def test_I16(font) -> None:
+def test_I16(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new(mode="I;16", size=(300, 100))
     draw = ImageDraw.Draw(im)
 
@@ -153,7 +157,7 @@ def test_I16(font) -> None:
     assert_image_similar_tofile(im.convert("L"), target, 0.01)
 
 
-def test_textbbox_equal(font) -> None:
+def test_textbbox_equal(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new(mode="RGB", size=(300, 100))
     draw = ImageDraw.Draw(im)
 
@@ -181,7 +185,13 @@ def test_textbbox_equal(font) -> None:
     ),
 )
 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)
 
@@ -207,7 +217,7 @@ def test_float_size() -> None:
     assert lengths[0] != lengths[1] != lengths[2]
 
 
-def test_render_multiline(font) -> None:
+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
@@ -223,7 +233,7 @@ def test_render_multiline(font) -> None:
     assert_image_similar_tofile(im, "Tests/images/multiline_text.png", 6.2)
 
 
-def test_render_multiline_text(font) -> None:
+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))
@@ -243,7 +253,9 @@ def test_render_multiline_text(font) -> None:
 @pytest.mark.parametrize(
     "align, ext", (("left", ""), ("center", "_center"), ("right", "_right"))
 )
-def test_render_multiline_text_align(font, align, ext) -> None:
+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)
@@ -251,7 +263,7 @@ def test_render_multiline_text_align(font, align, ext) -> None:
     assert_image_similar_tofile(im, f"Tests/images/multiline_text{ext}.png", 0.01)
 
 
-def test_unknown_align(font) -> None:
+def test_unknown_align(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new(mode="RGB", size=(300, 100))
     draw = ImageDraw.Draw(im)
 
@@ -260,14 +272,14 @@ def test_unknown_align(font) -> None:
         draw.multiline_text((0, 0), TEST_TEXT, font=font, align="unknown")
 
 
-def test_draw_align(font) -> None:
+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) -> None:
+def test_multiline_bbox(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new(mode="RGB", size=(300, 100))
     draw = ImageDraw.Draw(im)
 
@@ -285,7 +297,7 @@ def test_multiline_bbox(font) -> None:
     draw.textbbox((0, 0), TEST_TEXT, font=font, spacing=4)
 
 
-def test_multiline_width(font) -> None:
+def test_multiline_width(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new(mode="RGB", size=(300, 100))
     draw = ImageDraw.Draw(im)
 
@@ -295,7 +307,7 @@ def test_multiline_width(font) -> None:
     )
 
 
-def test_multiline_spacing(font) -> None:
+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)
@@ -306,7 +318,9 @@ def test_multiline_spacing(font) -> None:
 @pytest.mark.parametrize(
     "orientation", (Image.Transpose.ROTATE_90, Image.Transpose.ROTATE_270)
 )
-def test_rotated_transposed_font(font, orientation) -> None:
+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"
@@ -347,7 +361,9 @@ def test_rotated_transposed_font(font, orientation) -> None:
         Image.Transpose.FLIP_TOP_BOTTOM,
     ),
 )
-def test_unrotated_transposed_font(font, orientation) -> None:
+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"
@@ -382,7 +398,9 @@ def test_unrotated_transposed_font(font, orientation) -> None:
 @pytest.mark.parametrize(
     "orientation", (Image.Transpose.ROTATE_90, Image.Transpose.ROTATE_270)
 )
-def test_rotated_transposed_font_get_mask(font, orientation) -> None:
+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)
@@ -403,7 +421,9 @@ def test_rotated_transposed_font_get_mask(font, orientation) -> None:
         Image.Transpose.FLIP_TOP_BOTTOM,
     ),
 )
-def test_unrotated_transposed_font_get_mask(font, orientation) -> None:
+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)
@@ -415,11 +435,11 @@ def test_unrotated_transposed_font_get_mask(font, orientation) -> None:
     assert mask.size == (108, 13)
 
 
-def test_free_type_font_get_name(font) -> None:
+def test_free_type_font_get_name(font: ImageFont.FreeTypeFont) -> None:
     assert ("FreeMono", "Regular") == font.getname()
 
 
-def test_free_type_font_get_metrics(font) -> None:
+def test_free_type_font_get_metrics(font: ImageFont.FreeTypeFont) -> None:
     ascent, descent = font.getmetrics()
 
     assert isinstance(ascent, int)
@@ -427,7 +447,7 @@ def test_free_type_font_get_metrics(font) -> None:
     assert (ascent, descent) == (16, 4)
 
 
-def test_free_type_font_get_mask(font) -> None:
+def test_free_type_font_get_mask(font: ImageFont.FreeTypeFont) -> None:
     # Arrange
     text = "mask this"
 
@@ -473,16 +493,16 @@ def test_default_font() -> None:
 
 
 @pytest.mark.parametrize("mode", (None, "1", "RGBA"))
-def test_getbbox(font, mode) -> None:
+def test_getbbox(font: ImageFont.FreeTypeFont, mode: str | None) -> None:
     assert (0, 4, 12, 16) == font.getbbox("A", mode)
 
 
-def test_getbbox_empty(font) -> None:
+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) -> None:
+def test_render_empty(font: ImageFont.FreeTypeFont) -> None:
     # issue 2666
     im = Image.new(mode="RGB", size=(300, 100))
     target = im.copy()
@@ -492,7 +512,7 @@ def test_render_empty(font) -> None:
     assert_image_equal(im, target)
 
 
-def test_unicode_extended(layout_engine) -> None:
+def test_unicode_extended(layout_engine: ImageFont.Layout) -> None:
     # issue #3777
     text = "A\u278A\U0001F12B"
     target = "Tests/images/unicode_extended.png"
@@ -515,21 +535,23 @@ def test_unicode_extended(layout_engine) -> None:
     (("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) -> None:
-    def _test_fake_loading_font(path_to_fake, fontname) -> None:
+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
+            ):
                 if filepath == path_to_fake:
                     return ImageFont._FreeTypeFont(
-                        FONT_PATH, size, index, encoding, *args, **kwargs
+                        FONT_PATH, size, index, encoding, *args
                     )
-                return ImageFont._FreeTypeFont(
-                    filepath, size, index, encoding, *args, **kwargs
-                )
+                return ImageFont._FreeTypeFont(filepath, size, index, encoding, *args)
 
             m.setattr(ImageFont, "FreeTypeFont", loadable_font)
             font = ImageFont.truetype(fontname)
@@ -543,7 +565,7 @@ def test_find_font(monkeypatch, platform, font_directory) -> None:
     if platform == "linux":
         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 [
                 (
@@ -567,7 +589,7 @@ def test_find_font(monkeypatch, platform, font_directory) -> None:
     _test_fake_loading_font(font_directory + "/Duplicate.ttf", "Duplicate")
 
 
-def test_imagefont_getters(font) -> None:
+def test_imagefont_getters(font: ImageFont.FreeTypeFont) -> None:
     assert font.getmetrics() == (16, 4)
     assert font.font.ascent == 16
     assert font.font.descent == 4
@@ -588,7 +610,7 @@ def test_imagefont_getters(font) -> None:
 
 
 @pytest.mark.parametrize("stroke_width", (0, 2))
-def test_getsize_stroke(font, stroke_width) -> None:
+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,
@@ -607,7 +629,7 @@ def test_complex_font_settings() -> None:
         t.getmask("абвг", language="sr")
 
 
-def test_variation_get(font) -> None:
+def test_variation_get(font: ImageFont.FreeTypeFont) -> None:
     freetype = parse_version(features.version_module("freetype2"))
     if freetype < parse_version("2.9.1"):
         with pytest.raises(NotImplementedError):
@@ -662,7 +684,7 @@ def test_variation_get(font) -> None:
     ]
 
 
-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")
@@ -677,7 +699,7 @@ def _check_text(font, path, epsilon):
             raise
 
 
-def test_variation_set_by_name(font) -> None:
+def test_variation_set_by_name(font: ImageFont.FreeTypeFont) -> None:
     freetype = parse_version(features.version_module("freetype2"))
     if freetype < parse_version("2.9.1"):
         with pytest.raises(NotImplementedError):
@@ -702,7 +724,7 @@ def test_variation_set_by_name(font) -> None:
     _check_text(font, "Tests/images/variation_tiny_name.png", 40)
 
 
-def test_variation_set_by_axes(font) -> None:
+def test_variation_set_by_axes(font: ImageFont.FreeTypeFont) -> None:
     freetype = parse_version(features.version_module("freetype2"))
     if freetype < parse_version("2.9.1"):
         with pytest.raises(NotImplementedError):
@@ -737,7 +759,9 @@ def test_variation_set_by_axes(font) -> None:
     ),
     ids=("ls", "ms", "rs", "ma", "mt", "mm", "mb", "md"),
 )
-def test_anchor(layout_engine, anchor, left, top) -> None:
+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"
 
@@ -782,7 +806,9 @@ def test_anchor(layout_engine, anchor, left, top) -> None:
         ("md", "center"),
     ),
 )
-def test_anchor_multiline(layout_engine, anchor, align) -> None:
+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"
 
@@ -800,7 +826,7 @@ def test_anchor_multiline(layout_engine, anchor, align) -> None:
     assert_image_similar_tofile(im, target, 4)
 
 
-def test_anchor_invalid(font) -> None:
+def test_anchor_invalid(font: ImageFont.FreeTypeFont) -> None:
     im = Image.new("RGB", (100, 100), "white")
     d = ImageDraw.Draw(im)
     d.font = font
@@ -826,7 +852,7 @@ def test_anchor_invalid(font) -> None:
 
 
 @pytest.mark.parametrize("bpp", (1, 2, 4, 8))
-def test_bitmap_font(layout_engine, bpp) -> None:
+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"
@@ -843,7 +869,7 @@ def test_bitmap_font(layout_engine, bpp) -> None:
     assert_image_equal_tofile(im, target)
 
 
-def test_bitmap_font_stroke(layout_engine) -> None:
+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"
@@ -861,7 +887,7 @@ def test_bitmap_font_stroke(layout_engine) -> None:
 
 
 @pytest.mark.parametrize("embedded_color", (False, True))
-def test_bitmap_blend(layout_engine, embedded_color) -> None:
+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
     )
@@ -873,7 +899,7 @@ def test_bitmap_blend(layout_engine, embedded_color) -> None:
     assert_image_equal_tofile(im, "Tests/images/bitmap_font_blend.png")
 
 
-def test_standard_embedded_color(layout_engine) -> None:
+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)
@@ -886,7 +912,7 @@ def test_standard_embedded_color(layout_engine) -> None:
 
 
 @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)
 
@@ -908,7 +934,7 @@ def test_float_coord(layout_engine, fontmode):
             raise
 
 
-def test_cbdt(layout_engine) -> None:
+def test_cbdt(layout_engine: ImageFont.Layout) -> None:
     try:
         font = ImageFont.truetype(
             "Tests/fonts/CBDTTestFont.ttf", size=64, layout_engine=layout_engine
@@ -925,7 +951,7 @@ def test_cbdt(layout_engine) -> None:
         pytest.skip("freetype compiled without libpng or CBDT support")
 
 
-def test_cbdt_mask(layout_engine) -> None:
+def test_cbdt_mask(layout_engine: ImageFont.Layout) -> None:
     try:
         font = ImageFont.truetype(
             "Tests/fonts/CBDTTestFont.ttf", size=64, layout_engine=layout_engine
@@ -942,7 +968,7 @@ def test_cbdt_mask(layout_engine) -> None:
         pytest.skip("freetype compiled without libpng or CBDT support")
 
 
-def test_sbix(layout_engine) -> None:
+def test_sbix(layout_engine: ImageFont.Layout) -> None:
     try:
         font = ImageFont.truetype(
             "Tests/fonts/chromacheck-sbix.woff", size=300, layout_engine=layout_engine
@@ -959,7 +985,7 @@ def test_sbix(layout_engine) -> None:
         pytest.skip("freetype compiled without libpng or SBIX support")
 
 
-def test_sbix_mask(layout_engine) -> None:
+def test_sbix_mask(layout_engine: ImageFont.Layout) -> None:
     try:
         font = ImageFont.truetype(
             "Tests/fonts/chromacheck-sbix.woff", size=300, layout_engine=layout_engine
@@ -977,7 +1003,7 @@ def test_sbix_mask(layout_engine) -> None:
 
 
 @skip_unless_feature_version("freetype2", "2.10.0")
-def test_colr(layout_engine) -> None:
+def test_colr(layout_engine: ImageFont.Layout) -> None:
     font = ImageFont.truetype(
         "Tests/fonts/BungeeColor-Regular_colr_Windows.ttf",
         size=64,
@@ -993,7 +1019,7 @@ def test_colr(layout_engine) -> None:
 
 
 @skip_unless_feature_version("freetype2", "2.10.0")
-def test_colr_mask(layout_engine) -> None:
+def test_colr_mask(layout_engine: ImageFont.Layout) -> None:
     font = ImageFont.truetype(
         "Tests/fonts/BungeeColor-Regular_colr_Windows.ttf",
         size=64,
@@ -1008,7 +1034,7 @@ def test_colr_mask(layout_engine) -> None:
     assert_image_similar_tofile(im, "Tests/images/colr_bungee_mask.png", 22)
 
 
-def test_woff2(layout_engine) -> None:
+def test_woff2(layout_engine: ImageFont.Layout) -> None:
     try:
         font = ImageFont.truetype(
             "Tests/fonts/OpenSans.woff2",
@@ -1042,7 +1068,7 @@ def test_render_mono_size() -> None:
     assert_image_equal_tofile(im, "Tests/images/text_mono.gif")
 
 
-def test_too_many_characters(font) -> None:
+def test_too_many_characters(font: ImageFont.FreeTypeFont) -> None:
     with pytest.raises(ValueError):
         font.getlength("A" * 1_000_001)
     with pytest.raises(ValueError):
@@ -1070,14 +1096,14 @@ def test_too_many_characters(font) -> None:
         "Tests/fonts/oom-4da0210eb7081b0bf15bf16cc4c52ce02c1e1bbc.ttf",
     ],
 )
-def test_oom(test_file) -> None:
+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) -> None:
+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(
@@ -1091,6 +1117,8 @@ def test_raqm_missing_warning(monkeypatch) -> None:
 
 
 @pytest.mark.parametrize("size", [-1, 0])
-def test_invalid_truetype_sizes_raise_valueerror(layout_engine, size) -> None:
+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)

Tests/test_imagegrab.py

@@ -84,6 +84,7 @@ $bmp = New-Object Drawing.Bitmap 200, 200
     @pytest.mark.skipif(sys.platform != "win32", reason="Windows only")
     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()
 
@@ -94,6 +95,7 @@ $bmp = New-Object Drawing.Bitmap 200, 200
     @pytest.mark.skipif(sys.platform != "win32", reason="Windows only")
     def test_grabclipboard_png(self) -> None:
         p = subprocess.Popen(["powershell", "-command", "-"], stdin=subprocess.PIPE)
+        assert p.stdin is not None
         p.stdin.write(
             rb"""$bytes = [System.IO.File]::ReadAllBytes("Tests\images\hopper.png")
 $ms = new-object System.IO.MemoryStream(, $bytes)
@@ -113,7 +115,7 @@ $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) -> None:
+    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)
@@ -128,6 +130,6 @@ $ms = new-object System.IO.MemoryStream(, $bytes)
         reason="Linux with wl-clipboard only",
     )
     @pytest.mark.parametrize("arg", ("text", "--clear"))
-    def test_grabclipboard_wl_clipboard_errors(self, arg):
+    def test_grabclipboard_wl_clipboard_errors(self, arg: str) -> None:
         subprocess.call(["wl-copy", arg])
         assert ImageGrab.grabclipboard() is None

Tests/test_imagemorph.py

@@ -73,15 +73,16 @@ def test_lut(op: str) -> None:
 
 
 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"
 
 

Tests/test_imageops.py

@@ -13,8 +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))]
 
@@ -108,7 +112,7 @@ def test_fit_same_ratio() -> None:
 
 
 @pytest.mark.parametrize("new_size", ((256, 256), (512, 256), (256, 512)))
-def test_contain(new_size) -> None:
+def test_contain(new_size: tuple[int, int]) -> None:
     im = hopper()
     new_im = ImageOps.contain(im, new_size)
     assert new_im.size == (256, 256)
@@ -132,7 +136,7 @@ def test_contain_round() -> None:
         ("hopper.png", (256, 256)),  # square
     ),
 )
-def test_cover(image_name, expected_size) -> None:
+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
@@ -168,7 +172,7 @@ def test_pad_round() -> None:
 
 
 @pytest.mark.parametrize("mode", ("P", "PA"))
-def test_palette(mode) -> None:
+def test_palette(mode: str) -> None:
     im = hopper(mode)
 
     # Expand
@@ -210,7 +214,7 @@ def test_scale() -> None:
 
 
 @pytest.mark.parametrize("border", (10, (1, 2, 3, 4)))
-def test_expand_palette(border) -> None:
+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))
 
@@ -366,7 +370,7 @@ def test_exif_transpose() -> None:
     for ext in exts:
         with Image.open("Tests/images/hopper" + ext) as base_im:
 
-            def check(orientation_im) -> None:
+            def check(orientation_im: Image.Image) -> None:
                 for im in [
                     orientation_im,
                     orientation_im.copy(),
@@ -376,6 +380,7 @@ def test_exif_transpose() -> None:
                     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
@@ -387,6 +392,7 @@ def test_exif_transpose() -> None:
 
                     # 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)
@@ -402,6 +408,7 @@ def test_exif_transpose() -> None:
             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()
@@ -414,12 +421,14 @@ def test_exif_transpose() -> None:
         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()
 
 
@@ -445,7 +454,7 @@ 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]):
             return ImageOps.autocontrast(img, cutoff).histogram()
 
         assert autocontrast(10) == autocontrast((10, 10))
@@ -486,20 +495,20 @@ def test_autocontrast_mask_real_input() -> None:
         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() -> None:
-    def autocontrast(mode, preserve_tone):
+    def autocontrast(mode: str, preserve_tone: bool) -> list[int]:
         im = hopper(mode)
         return ImageOps.autocontrast(im, preserve_tone=preserve_tone).histogram()
 
@@ -533,7 +542,7 @@ def test_autocontrast_preserve_gradient() -> None:
 @pytest.mark.parametrize(
     "color", ((255, 255, 255), (127, 255, 0), (127, 127, 127), (0, 0, 0))
 )
-def test_autocontrast_preserve_one_color(color) -> None:
+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

Tests/test_imageops_usm.py

@@ -1,12 +1,14 @@
 from __future__ import annotations
 
+from typing import Generator
+
 import pytest
 
 from PIL import Image, ImageFilter
 
 
 @pytest.fixture
-def test_images():
+def test_images() -> Generator[dict[str, Image.Image], None, None]:
     ims = {
         "im": Image.open("Tests/images/hopper.ppm"),
         "snakes": Image.open("Tests/images/color_snakes.png"),
@@ -18,7 +20,7 @@ def test_images():
             im.close()
 
 
-def test_filter_api(test_images) -> None:
+def test_filter_api(test_images: dict[str, Image.Image]) -> None:
     im = test_images["im"]
 
     test_filter = ImageFilter.GaussianBlur(2.0)
@@ -26,13 +28,13 @@ def test_filter_api(test_images) -> None:
     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) -> None:
+def test_usm_formats(test_images: dict[str, Image.Image]) -> None:
     im = test_images["im"]
 
     usm = ImageFilter.UnsharpMask
@@ -50,7 +52,7 @@ def test_usm_formats(test_images) -> None:
         im.convert("YCbCr").filter(usm)
 
 
-def test_blur_formats(test_images) -> None:
+def test_blur_formats(test_images: dict[str, Image.Image]) -> None:
     im = test_images["im"]
 
     blur = ImageFilter.GaussianBlur
@@ -68,7 +70,7 @@ def test_blur_formats(test_images) -> None:
         im.convert("YCbCr").filter(blur)
 
 
-def test_usm_accuracy(test_images) -> None:
+def test_usm_accuracy(test_images: dict[str, Image.Image]) -> None:
     snakes = test_images["snakes"]
 
     src = snakes.convert("RGB")
@@ -77,7 +79,7 @@ def test_usm_accuracy(test_images) -> None:
     assert i.tobytes() == src.tobytes()
 
 
-def test_blur_accuracy(test_images) -> None:
+def test_blur_accuracy(test_images: dict[str, Image.Image]) -> None:
     snakes = test_images["snakes"]
 
     i = snakes.filter(ImageFilter.GaussianBlur(0.4))

Tests/test_imagepath.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 import array
 import math
 import struct
+from typing import Sequence
 
 import pytest
 
@@ -57,7 +58,9 @@ def test_path() -> None:
         ImagePath.Path((0, 1)),
     ),
 )
-def test_path_constructors(coords) -> None:
+def test_path_constructors(
+    coords: Sequence[float] | array.array[float] | ImagePath.Path,
+) -> None:
     # Arrange / Act
     p = ImagePath.Path(coords)
 
@@ -75,7 +78,9 @@ def test_path_constructors(coords) -> None:
         [[0.0, 1.0]],
     ),
 )
-def test_invalid_path_constructors(coords) -> None:
+def test_invalid_path_constructors(
+    coords: tuple[str, str] | Sequence[Sequence[int]]
+) -> None:
     # Act
     with pytest.raises(ValueError) as e:
         ImagePath.Path(coords)
@@ -93,7 +98,7 @@ def test_invalid_path_constructors(coords) -> None:
         [0, 1, 2],
     ),
 )
-def test_path_odd_number_of_coordinates(coords) -> None:
+def test_path_odd_number_of_coordinates(coords: Sequence[int]) -> None:
     # Act
     with pytest.raises(ValueError) as e:
         ImagePath.Path(coords)
@@ -111,7 +116,9 @@ def test_path_odd_number_of_coordinates(coords) -> None:
         (1, (0.0, 0.0, 0.0, 0.0)),
     ],
 )
-def test_getbbox(coords, expected) -> None:
+def test_getbbox(
+    coords: int | list[int], expected: tuple[float, float, float, float]
+) -> None:
     # Arrange
     p = ImagePath.Path(coords)
 
@@ -135,7 +142,7 @@ def test_getbbox_no_args() -> None:
         (list(range(6)), [(0.0, 3.0), (4.0, 9.0), (8.0, 15.0)]),
     ],
 )
-def test_map(coords, expected) -> None:
+def test_map(coords: int | list[int], expected: list[tuple[float, float]]) -> None:
     # Arrange
     p = ImagePath.Path(coords)
 
@@ -201,9 +208,9 @@ class Evil:
     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) -> None:
+    def __setitem__(self, i: int, x: bytes) -> None:
         self.corrupt[i] = struct.unpack("dd", x)

Tests/test_imageqt.py

@@ -28,7 +28,7 @@ def test_rgb() -> None:
 
     assert qRgb(0, 0, 0) == qRgba(0, 0, 0, 255)
 
-    def checkrgb(r, g, b) -> None:
+    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

Tests/test_imagesequence.py

@@ -26,7 +26,7 @@ def test_sanity(tmp_path: Path) -> None:
     assert index == 1
 
     with pytest.raises(AttributeError):
-        ImageSequence.Iterator(0)
+        ImageSequence.Iterator(0)  # type: ignore[arg-type]
 
 
 def test_iterator() -> None:
@@ -72,6 +72,7 @@ def test_consecutive() -> 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

Tests/test_imageshow.py

@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+from typing import Any
+
 import pytest
 
 from PIL import Image, ImageShow
@@ -24,9 +26,9 @@ def test_register() -> None:
     "order",
     [-1, 0],
 )
-def test_viewer_show(order) -> None:
+def test_viewer_show(order: int) -> None:
     class TestViewer(ImageShow.Viewer):
-        def show_image(self, image, **options) -> bool:
+        def show_image(self, image: Image.Image, **options: Any) -> bool:
             self.methodCalled = True
             return True
 
@@ -48,7 +50,7 @@ def test_viewer_show(order) -> None:
     reason="Only run on CIs; hangs on Windows CIs",
 )
 @pytest.mark.parametrize("mode", ("1", "I;16", "LA", "RGB", "RGBA"))
-def test_show(mode) -> None:
+def test_show(mode: str) -> None:
     im = hopper(mode)
     assert ImageShow.show(im)
 
@@ -66,14 +68,15 @@ def test_show_without_viewers() -> None:
 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) -> None:
+def test_viewers(viewer: ImageShow.Viewer) -> None:
     try:
         viewer.get_command("test.jpg")
     except NotImplementedError:

Tests/test_imagewin_pointers.py

@@ -70,7 +70,7 @@ if is_win32():
     ]
     CreateDIBSection.restype = ctypes.wintypes.HBITMAP
 
-    def serialize_dib(bi, pixels):
+    def serialize_dib(bi, pixels) -> bytearray:
         bf = BITMAPFILEHEADER()
         bf.bfType = 0x4D42
         bf.bfOffBits = ctypes.sizeof(bf) + bi.biSize

Tests/test_mode_i16.py

@@ -78,7 +78,7 @@ def test_basic(tmp_path: Path, mode: str) -> None:
 
 
 def test_tobytes() -> None:
-    def tobytes(mode: str) -> Image.Image:
+    def tobytes(mode: str) -> bytes:
         return Image.new(mode, (1, 1), 1).tobytes()
 
     order = 1 if Image._ENDIAN == "<" else -1

Tests/test_numpy.py

@@ -14,7 +14,7 @@ TEST_IMAGE_SIZE = (10, 10)
 
 
 def test_numpy_to_image() -> None:
-    def to_image(dtype, bands: int = 1, boolean: int = 0):
+    def to_image(dtype, bands: int = 1, boolean: int = 0) -> Image.Image:
         if bands == 1:
             if boolean:
                 data = [0, 255] * 50
@@ -99,7 +99,7 @@ def test_1d_array() -> None:
     assert_image(Image.fromarray(a), "L", (1, 5))
 
 
-def _test_img_equals_nparray(img, np) -> None:
+def _test_img_equals_nparray(img: Image.Image, np) -> None:
     assert len(np.shape) >= 2
     np_size = np.shape[1], np.shape[0]
     assert img.size == np_size
@@ -157,7 +157,7 @@ def test_save_tiff_uint16() -> None:
         ("HSV", numpy.uint8),
     ),
 )
-def test_to_array(mode, dtype) -> None:
+def test_to_array(mode: str, dtype) -> None:
     img = hopper(mode)
 
     # Resize to non-square

Tests/test_qt_image_qapplication.py

@@ -4,7 +4,7 @@ from pathlib import Path
 
 import pytest
 
-from PIL import ImageQt
+from PIL import Image, ImageQt
 
 from .helper import assert_image_equal_tofile, assert_image_similar, hopper
 
@@ -37,7 +37,7 @@ if ImageQt.qt_is_installed:
             lbl.setPixmap(pixmap1.copy())
 
 
-def roundtrip(expected) -> None:
+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)

Tests/test_qt_image_toqimage.py

@@ -17,7 +17,7 @@ if ImageQt.qt_is_installed:
 
 
 @pytest.mark.parametrize("mode", ("RGB", "RGBA", "L", "P", "1"))
-def test_sanity(mode, tmp_path: Path) -> None:
+def test_sanity(mode: str, tmp_path: Path) -> None:
     src = hopper(mode)
     data = ImageQt.toqimage(src)
 

Tests/test_tiff_crashes.py

@@ -47,9 +47,8 @@ def test_tiff_crashes(test_file: str) -> None:
         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

Tests/test_util.py

@@ -10,7 +10,7 @@ from PIL import _util
 @pytest.mark.parametrize(
     "test_path", ["filename.ext", Path("filename.ext"), PurePath("filename.ext")]
 )
-def test_is_path(test_path) -> None:
+def test_is_path(test_path: str | Path | PurePath) -> None:
     # Act
     it_is = _util.is_path(test_path)
 

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
 

docs/conf.py

@@ -326,7 +326,7 @@ linkcheck_allowed_redirects = {
     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/.*",
+    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]+",
 }

docs/deprecations.rst

@@ -504,3 +504,27 @@ PIL.OleFileIO
 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.

docs/index.rst

@@ -49,7 +49,7 @@ 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
 
@@ -73,10 +73,6 @@ Pillow for enterprise is available via the Tidelift Subscription. `Learn more <h
    :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
@@ -97,7 +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

docs/installation.rst

@@ -1,606 +1,29 @@
+:orphan:
+
 Installation
 ============
 
-.. raw:: html
-
-    <script>
-    document.addEventListener('DOMContentLoaded', function() {
-      activateTab(getOS());
-    });
-    </script>
-
-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
-
-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
-    (with the exception of Python 3.8 on arm64). 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. 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.
-
-  * Pillow has been tested with version **0.1.3**, which does not read
-    transparent WebP files. Versions **0.3.0** and above support
-    transparency.
-
-* **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 **2.6-4.2.2**
-  * 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
-
-    To build Pillow using MSYS2, make sure you run the **MSYS2 MinGW 32-bit** or
-    **MSYS2 MinGW 64-bit** console, *not* **MSYS2** directly.
-
-    The following instructions target the 64-bit build, for 32-bit
-    replace all occurrences of ``mingw-w64-x86_64-`` with ``mingw-w64-i686-``.
-
-    Make sure you have Python and GCC installed::
-
-        pacman -S \
-            mingw-w64-x86_64-gcc \
-            mingw-w64-x86_64-python3 \
-            mingw-w64-x86_64-python3-pip \
-            mingw-w64-x86_64-python3-setuptools
-
-    Prerequisites are installed on **MSYS2 MinGW 64-bit** with::
-
-        pacman -S \
-            mingw-w64-x86_64-libjpeg-turbo \
-            mingw-w64-x86_64-zlib \
-            mingw-w64-x86_64-libtiff \
-            mingw-w64-x86_64-freetype \
-            mingw-w64-x86_64-lcms2 \
-            mingw-w64-x86_64-libwebp \
-            mingw-w64-x86_64-openjpeg2 \
-            mingw-w64-x86_64-libimagequant \
-            mingw-w64-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
-
-    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 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.
-
-* 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
+.. 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, x86-64         |
-+----------------------------------+----------------------------+---------------------+
-| Fedora 38                        | 3.11                       | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| Fedora 39                        | 3.12                       | 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                |                     |
-|                                  +----------------------------+---------------------+
-|                                  | 3.12                       | x86                 |
-|                                  +----------------------------+---------------------+
-|                                  | 3.9 (MinGW)                | 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 14 Sonoma                  | 3.8, 3.9, 3.10, 3.11, 3.12 | 10.2.0           |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                       | 3.9, 3.10, 3.11, 3.12      | 10.2.0           |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        |
-+----------------------------------+----------------------------+------------------+--------------+
+.. 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.

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
+    (with the exception of Python 3.8 on arm64). 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.

docs/installation/building-from-source.rst

@@ -0,0 +1,317 @@
+.. 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.
+
+  * Pillow has been tested with version **0.1.3**, which does not read
+    transparent WebP files. Versions **0.3.0** and above support
+    transparency.
+
+* **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 **2.6-4.2.2**
+  * 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
+
+    To build Pillow using MSYS2, make sure you run the **MSYS2 MinGW 32-bit** or
+    **MSYS2 MinGW 64-bit** console, *not* **MSYS2** directly.
+
+    The following instructions target the 64-bit build, for 32-bit
+    replace all occurrences of ``mingw-w64-x86_64-`` with ``mingw-w64-i686-``.
+
+    Make sure you have Python and GCC installed::
+
+        pacman -S \
+            mingw-w64-x86_64-gcc \
+            mingw-w64-x86_64-python3 \
+            mingw-w64-x86_64-python3-pip \
+            mingw-w64-x86_64-python3-setuptools
+
+    Prerequisites are installed on **MSYS2 MinGW 64-bit** with::
+
+        pacman -S \
+            mingw-w64-x86_64-libjpeg-turbo \
+            mingw-w64-x86_64-zlib \
+            mingw-w64-x86_64-libtiff \
+            mingw-w64-x86_64-freetype \
+            mingw-w64-x86_64-lcms2 \
+            mingw-w64-x86_64-libwebp \
+            mingw-w64-x86_64-openjpeg2 \
+            mingw-w64-x86_64-libimagequant \
+            mingw-w64-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
+
+    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 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.
+
+* 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/.

docs/installation/index.rst

@@ -0,0 +1,10 @@
+Installation
+============
+
+.. toctree::
+  :maxdepth: 2
+
+  basic-installation
+  python-support
+  platform-support
+  building-from-source

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                           | 3.9                        | 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, x86-64         |
++----------------------------------+----------------------------+---------------------+
+| Fedora 38                        | 3.11                       | x86-64              |
++----------------------------------+----------------------------+---------------------+
+| Fedora 39                        | 3.12                       | 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                |                     |
+|                                  +----------------------------+---------------------+
+|                                  | 3.12                       | x86                 |
+|                                  +----------------------------+---------------------+
+|                                  | 3.9 (MinGW)                | 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 14 Sonoma                  | 3.8, 3.9, 3.10, 3.11, 3.12 | 10.2.0           |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                       | 3.9, 3.10, 3.11, 3.12      | 10.2.0           |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        |
++----------------------------------+----------------------------+------------------+--------------+

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

docs/reference/ImageOps.rst

@@ -14,6 +14,8 @@ only work on L and RGB images.
 .. autofunction:: colorize
 .. autofunction:: crop
 .. autofunction:: scale
+.. autoclass:: SupportsGetMesh
+    :show-inheritance:
 .. autofunction:: deform
 .. autofunction:: equalize
 .. autofunction:: expand

docs/releasenotes/10.3.0.rst

@@ -79,3 +79,9 @@ 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.

pyproject.toml

@@ -33,6 +33,7 @@ classifiers = [
   "Topic :: Multimedia :: Graphics :: Capture :: Screen Capture",
   "Topic :: Multimedia :: Graphics :: Graphics Conversion",
   "Topic :: Multimedia :: Graphics :: Viewers",
+  "Typing :: Typed",
 ]
 dynamic = [
   "version",
@@ -79,7 +80,6 @@ Homepage = "https://python-pillow.org"
 Mastodon = "https://fosstodon.org/@pillow"
 "Release notes" = "https://pillow.readthedocs.io/en/stable/releasenotes/index.html"
 Source = "https://github.com/python-pillow/Pillow"
-Twitter = "https://twitter.com/PythonPillow"
 
 [tool.setuptools]
 packages = ["PIL"]
@@ -140,7 +140,3 @@ follow_imports = "silent"
 warn_redundant_casts = true
 warn_unreachable = true
 warn_unused_ignores = true
-exclude = [
-  '^src/PIL/FpxImagePlugin.py$',
-  '^src/PIL/MicImagePlugin.py$',
-]

src/PIL/EpsImagePlugin.py

@@ -38,7 +38,7 @@ from ._deprecate import deprecate
 split = re.compile(r"^%%([^:]*):[ \t]*(.*)[ \t]*$")
 field = re.compile(r"^%[%!\w]([^:]*)[ \t]*$")
 
-gs_binary = None
+gs_binary: str | bool | None = None
 gs_windows_binary = None