diff --git a/.github/workflows/macos-install.sh b/.github/workflows/macos-install.sh
index 6cd9dadf3..76a3ef2b7 100755
--- a/.github/workflows/macos-install.sh
+++ b/.github/workflows/macos-install.sh
@@ -2,7 +2,7 @@
 
 set -e
 
-brew install libtiff libjpeg openjpeg libimagequant webp little-cms2 freetype
+brew install libtiff libjpeg openjpeg libimagequant webp little-cms2 freetype openblas
 
 PYTHONOPTIMIZE=0 pip install cffi
 pip install coverage
@@ -11,6 +11,8 @@ pip install -U pytest
 pip install -U pytest-cov
 pip install pyroma
 pip install test-image-results
+
+echo -e "[openblas]\nlibraries = openblas\nlibrary_dirs = /usr/local/opt/openblas/lib" >> ~/.numpy-site.cfg
 pip install numpy
 
 # extra test images
diff --git a/.github/workflows/test-windows.yml b/.github/workflows/test-windows.yml
index 7ae26b883..83dc5748b 100644
--- a/.github/workflows/test-windows.yml
+++ b/.github/workflows/test-windows.yml
@@ -52,6 +52,11 @@ jobs:
         python-version: ${{ matrix.python-version }}
         architecture: ${{ matrix.architecture }}
 
+    - name: Set up TCL
+      if: "contains(matrix.python-version, 'pypy')"
+      run: Write-Host "::set-env name=TCL_LIBRARY::$env:pythonLocation\tcl\tcl8.5"
+      shell: pwsh
+
     - name: Print build system information
       run: python .github/workflows/system-info.py
 
diff --git a/CHANGES.rst b/CHANGES.rst
index 566e055a4..96239a6e2 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -5,6 +5,24 @@ Changelog (Pillow)
 7.2.0 (unreleased)
 ------------------
 
+- Change STRIPBYTECOUNTS to LONG if necessary when saving #4626
+  [radarhere, hugovk]
+
+- Write JFIF header when saving JPEG #4639
+  [radarhere]
+
+- Replaced tiff_jpeg with jpeg compression when saving TIFF images #4627
+  [radarhere]
+
+- Writing TIFF tags: improved BYTE, added UNDEFINED #4605
+  [radarhere]
+
+- Consider transparency when pasting text on an RGBA image #4566
+  [radarhere]
+
+- Added method argument to single frame WebP saving #4547
+  [radarhere]
+
 - Use ImageFileDirectory_v2 in Image.Exif #4637
   [radarhere]
 
@@ -44,6 +62,9 @@ Changelog (Pillow)
 - Fix pickling WebP #4561
   [hugovk, radarhere]
 
+- Replace IOError and WindowsError aliases with OSError #4536
+  [hugovk, radarhere]
+
 7.1.2 (2020-04-25)
 ------------------
 
diff --git a/Tests/images/text_mono.gif b/Tests/images/text_mono.gif
new file mode 100644
index 000000000..b350c10e6
Binary files /dev/null and b/Tests/images/text_mono.gif differ
diff --git a/Tests/images/transparent_background_text.png b/Tests/images/transparent_background_text.png
new file mode 100644
index 000000000..40acd92b6
Binary files /dev/null and b/Tests/images/transparent_background_text.png differ
diff --git a/Tests/test_features.py b/Tests/test_features.py
index 7cfa08071..1e7692204 100644
--- a/Tests/test_features.py
+++ b/Tests/test_features.py
@@ -1,4 +1,5 @@
 import io
+import re
 
 import pytest
 from PIL import features
@@ -21,6 +22,27 @@ def test_check():
         assert features.check_feature(feature) == features.check(feature)
 
 
+def test_version():
+    # Check the correctness of the convenience function
+    # and the format of version numbers
+
+    def test(name, function):
+        version = features.version(name)
+        if not features.check(name):
+            assert version is None
+        else:
+            assert function(name) == version
+            if name != "PIL":
+                assert version is None or re.search(r"\d+(\.\d+)*$", version)
+
+    for module in features.modules:
+        test(module, features.version_module)
+    for codec in features.codecs:
+        test(codec, features.version_codec)
+    for feature in features.features:
+        test(feature, features.version_feature)
+
+
 @skip_unless_feature("webp")
 def test_webp_transparency():
     assert features.check("transp_webp") != _webp.WebPDecoderBuggyAlpha()
@@ -37,9 +59,22 @@ def test_webp_anim():
     assert features.check("webp_anim") == _webp.HAVE_WEBPANIM
 
 
+@skip_unless_feature("libjpeg_turbo")
+def test_libjpeg_turbo_version():
+    assert re.search(r"\d+\.\d+\.\d+$", features.version("libjpeg_turbo"))
+
+
+@skip_unless_feature("libimagequant")
+def test_libimagequant_version():
+    assert re.search(r"\d+\.\d+\.\d+$", features.version("libimagequant"))
+
+
 def test_check_modules():
     for feature in features.modules:
         assert features.check_module(feature) in [True, False]
+
+
+def test_check_codecs():
     for feature in features.codecs:
         assert features.check_codec(feature) in [True, False]
 
@@ -64,6 +99,8 @@ def test_unsupported_codec():
     # Act / Assert
     with pytest.raises(ValueError):
         features.check_codec(codec)
+    with pytest.raises(ValueError):
+        features.version_codec(codec)
 
 
 def test_unsupported_module():
@@ -72,6 +109,8 @@ def test_unsupported_module():
     # Act / Assert
     with pytest.raises(ValueError):
         features.check_module(module)
+    with pytest.raises(ValueError):
+        features.version_module(module)
 
 
 def test_pilinfo():
diff --git a/Tests/test_file_icns.py b/Tests/test_file_icns.py
index aeb146f7e..7bf7b72ec 100644
--- a/Tests/test_file_icns.py
+++ b/Tests/test_file_icns.py
@@ -2,14 +2,14 @@ import io
 import sys
 
 import pytest
-from PIL import IcnsImagePlugin, Image
+from PIL import IcnsImagePlugin, Image, features
 
 from .helper import assert_image_equal, assert_image_similar
 
 # sample icon file
 TEST_FILE = "Tests/images/pillow.icns"
 
-ENABLE_JPEG2K = hasattr(Image.core, "jp2klib_version")
+ENABLE_JPEG2K = features.check_codec("jpg_2000")
 
 
 def test_sanity():
diff --git a/Tests/test_file_jpeg.py b/Tests/test_file_jpeg.py
index 5573086cb..74ea32b0b 100644
--- a/Tests/test_file_jpeg.py
+++ b/Tests/test_file_jpeg.py
@@ -3,7 +3,7 @@ import re
 from io import BytesIO
 
 import pytest
-from PIL import ExifTags, Image, ImageFile, JpegImagePlugin, UnidentifiedImageError
+from PIL import ExifTags, Image, ImageFile, JpegImagePlugin, UnidentifiedImageError, features
 
 from .helper import (
     assert_image,
@@ -41,7 +41,7 @@ class TestFileJpeg:
     def test_sanity(self):
 
         # internal version number
-        assert re.search(r"\d+\.\d+$", Image.core.jpeglib_version)
+        assert re.search(r"\d+\.\d+$", features.version_codec("jpg"))
 
         with Image.open(TEST_FILE) as im:
             im.load()
@@ -90,9 +90,12 @@ class TestFileJpeg:
             ]
             assert k > 0.9
 
-    def test_dpi(self):
+    @pytest.mark.parametrize(
+        "test_image_path", [TEST_FILE, "Tests/images/pil_sample_cmyk.jpg"],
+    )
+    def test_dpi(self, test_image_path):
         def test(xdpi, ydpi=None):
-            with Image.open(TEST_FILE) as im:
+            with Image.open(test_image_path) as im:
                 im = self.roundtrip(im, dpi=(xdpi, ydpi or xdpi))
             return im.info.get("dpi")
 
diff --git a/Tests/test_file_jpeg2k.py b/Tests/test_file_jpeg2k.py
index 7b8b7a04a..07f8e8e05 100644
--- a/Tests/test_file_jpeg2k.py
+++ b/Tests/test_file_jpeg2k.py
@@ -2,7 +2,7 @@ import re
 from io import BytesIO
 
 import pytest
-from PIL import Image, ImageFile, Jpeg2KImagePlugin
+from PIL import Image, ImageFile, Jpeg2KImagePlugin, features
 
 from .helper import (
     assert_image_equal,
@@ -35,7 +35,7 @@ def roundtrip(im, **options):
 
 def test_sanity():
     # Internal version number
-    assert re.search(r"\d+\.\d+\.\d+$", Image.core.jp2klib_version)
+    assert re.search(r"\d+\.\d+\.\d+$", features.version_codec("jpg_2000"))
 
     with Image.open("Tests/images/test-card-lossless.jp2") as im:
         px = im.load()
diff --git a/Tests/test_file_libtiff.py b/Tests/test_file_libtiff.py
index 9523e5901..c30eb54eb 100644
--- a/Tests/test_file_libtiff.py
+++ b/Tests/test_file_libtiff.py
@@ -3,11 +3,12 @@ import io
 import itertools
 import logging
 import os
+import re
 from collections import namedtuple
 from ctypes import c_float
 
 import pytest
-from PIL import Image, ImageFilter, TiffImagePlugin, TiffTags
+from PIL import Image, ImageFilter, TiffImagePlugin, TiffTags, features
 
 from .helper import (
     assert_image_equal,
@@ -47,6 +48,9 @@ class LibTiffTestCase:
 
 
 class TestFileLibTiff(LibTiffTestCase):
+    def test_version(self):
+        assert re.search(r"\d+\.\d+\.\d+$", features.version_codec("libtiff"))
+
     def test_g4_tiff(self, tmp_path):
         """Test the ordinary file path load path"""
 
@@ -299,9 +303,6 @@ class TestFileLibTiff(LibTiffTestCase):
                             )
                             continue
 
-                        if libtiff and isinstance(value, bytes):
-                            value = value.decode()
-
                         assert reloaded_value == value
 
             # Test with types
@@ -322,6 +323,17 @@ class TestFileLibTiff(LibTiffTestCase):
             )
         TiffImagePlugin.WRITE_LIBTIFF = False
 
+    def test_xmlpacket_tag(self, tmp_path):
+        TiffImagePlugin.WRITE_LIBTIFF = True
+
+        out = str(tmp_path / "temp.tif")
+        hopper().save(out, tiffinfo={700: b"xmlpacket tag"})
+        TiffImagePlugin.WRITE_LIBTIFF = False
+
+        with Image.open(out) as reloaded:
+            if 700 in reloaded.tag_v2:
+                assert reloaded.tag_v2[700] == b"xmlpacket tag"
+
     def test_int_dpi(self, tmp_path):
         # issue #1765
         im = hopper("RGB")
@@ -448,6 +460,14 @@ class TestFileLibTiff(LibTiffTestCase):
         assert size_compressed > size_jpeg
         assert size_jpeg > size_jpeg_30
 
+    def test_tiff_jpeg_compression(self, tmp_path):
+        im = hopper("RGB")
+        out = str(tmp_path / "temp.tif")
+        im.save(out, compression="tiff_jpeg")
+
+        with Image.open(out) as reloaded:
+            assert reloaded.info["compression"] == "jpeg"
+
     def test_quality(self, tmp_path):
         im = hopper("RGB")
         out = str(tmp_path / "temp.tif")
@@ -667,6 +687,26 @@ class TestFileLibTiff(LibTiffTestCase):
         TiffImagePlugin.READ_LIBTIFF = False
         assert icc == icc_libtiff
 
+    def test_write_icc(self, tmp_path):
+        def check_write(libtiff):
+            TiffImagePlugin.WRITE_LIBTIFF = libtiff
+
+            with Image.open("Tests/images/hopper.iccprofile.tif") as img:
+                icc_profile = img.info["icc_profile"]
+
+                out = str(tmp_path / "temp.tif")
+                img.save(out, icc_profile=icc_profile)
+            with Image.open(out) as reloaded:
+                assert icc_profile == reloaded.info["icc_profile"]
+
+        libtiffs = []
+        if Image.core.libtiff_support_custom_tags:
+            libtiffs.append(True)
+        libtiffs.append(False)
+
+        for libtiff in libtiffs:
+            check_write(libtiff)
+
     def test_multipage_compression(self):
         with Image.open("Tests/images/compression.tif") as im:
 
diff --git a/Tests/test_file_png.py b/Tests/test_file_png.py
index a44bdecf8..9bd8507d9 100644
--- a/Tests/test_file_png.py
+++ b/Tests/test_file_png.py
@@ -3,7 +3,7 @@ import zlib
 from io import BytesIO
 
 import pytest
-from PIL import Image, ImageFile, PngImagePlugin
+from PIL import Image, ImageFile, PngImagePlugin, features
 
 from .helper import (
     PillowLeakTestCase,
@@ -73,7 +73,7 @@ class TestFilePng:
     def test_sanity(self, tmp_path):
 
         # internal version number
-        assert re.search(r"\d+\.\d+\.\d+(\.\d+)?$", Image.core.zlib_version)
+        assert re.search(r"\d+\.\d+\.\d+(\.\d+)?$", features.version_codec("zlib"))
 
         test_file = str(tmp_path / "temp.png")
 
diff --git a/Tests/test_file_tiff_metadata.py b/Tests/test_file_tiff_metadata.py
index 9fe601bd6..d57f63717 100644
--- a/Tests/test_file_tiff_metadata.py
+++ b/Tests/test_file_tiff_metadata.py
@@ -156,6 +156,23 @@ def test_write_metadata(tmp_path):
             assert value == reloaded[tag], "%s didn't roundtrip" % tag
 
 
+def test_change_stripbytecounts_tag_type(tmp_path):
+    out = str(tmp_path / "temp.tiff")
+    with Image.open("Tests/images/hopper.tif") as im:
+        info = im.tag_v2
+
+        # Resize the image so that STRIPBYTECOUNTS will be larger than a SHORT
+        im = im.resize((500, 500))
+
+        # STRIPBYTECOUNTS can be a SHORT or a LONG
+        info.tagtype[TiffImagePlugin.STRIPBYTECOUNTS] = TiffTags.SHORT
+
+        im.save(out, tiffinfo=info)
+
+    with Image.open(out) as reloaded:
+        assert reloaded.tag_v2.tagtype[TiffImagePlugin.STRIPBYTECOUNTS] == TiffTags.LONG
+
+
 def test_no_duplicate_50741_tag():
     assert TAG_IDS["MakerNoteSafety"] == 50741
     assert TAG_IDS["BestQualityScale"] == 50780
@@ -319,13 +336,13 @@ def test_empty_values():
 
 def test_PhotoshopInfo(tmp_path):
     with Image.open("Tests/images/issue_2278.tif") as im:
-        assert len(im.tag_v2[34377]) == 1
-        assert isinstance(im.tag_v2[34377][0], bytes)
+        assert len(im.tag_v2[34377]) == 70
+        assert isinstance(im.tag_v2[34377], bytes)
         out = str(tmp_path / "temp.tiff")
         im.save(out)
     with Image.open(out) as reloaded:
-        assert len(reloaded.tag_v2[34377]) == 1
-        assert isinstance(reloaded.tag_v2[34377][0], bytes)
+        assert len(reloaded.tag_v2[34377]) == 70
+        assert isinstance(reloaded.tag_v2[34377], bytes)
 
 
 def test_too_many_entries():
diff --git a/Tests/test_file_webp.py b/Tests/test_file_webp.py
index 1b8aa9f8a..25a4bb8da 100644
--- a/Tests/test_file_webp.py
+++ b/Tests/test_file_webp.py
@@ -1,5 +1,8 @@
+import io
+import re
+
 import pytest
-from PIL import Image, WebPImagePlugin
+from PIL import Image, WebPImagePlugin, features
 
 from .helper import (
     assert_image_similar,
@@ -36,6 +39,7 @@ class TestFileWebp:
     def test_version(self):
         _webp.WebPDecoderVersion()
         _webp.WebPDecoderBuggyAlpha()
+        assert re.search(r"\d+\.\d+\.\d+$", features.version_module("webp"))
 
     def test_read_rgb(self):
         """
@@ -54,15 +58,10 @@ class TestFileWebp:
             # dwebp -ppm ../../Tests/images/hopper.webp -o hopper_webp_bits.ppm
             assert_image_similar_tofile(image, "Tests/images/hopper_webp_bits.ppm", 1.0)
 
-    def test_write_rgb(self, tmp_path):
-        """
-        Can we write a RGB mode file to webp without error.
-        Does it have the bits we expect?
-        """
-
+    def _roundtrip(self, tmp_path, mode, epsilon, args={}):
         temp_file = str(tmp_path / "temp.webp")
 
-        hopper(self.rgb_mode).save(temp_file)
+        hopper(mode).save(temp_file, **args)
         with Image.open(temp_file) as image:
             assert image.mode == self.rgb_mode
             assert image.size == (128, 128)
@@ -70,18 +69,38 @@ class TestFileWebp:
             image.load()
             image.getdata()
 
-            # generated with: dwebp -ppm temp.webp -o hopper_webp_write.ppm
-            assert_image_similar_tofile(
-                image, "Tests/images/hopper_webp_write.ppm", 12.0
-            )
+            if mode == self.rgb_mode:
+                # generated with: dwebp -ppm temp.webp -o hopper_webp_write.ppm
+                assert_image_similar_tofile(
+                    image, "Tests/images/hopper_webp_write.ppm", 12.0
+                )
 
             # This test asserts that the images are similar. If the average pixel
             # difference between the two images is less than the epsilon value,
             # then we're going to accept that it's a reasonable lossy version of
-            # the image. The old lena images for WebP are showing ~16 on
-            # Ubuntu, the jpegs are showing ~18.
-            target = hopper(self.rgb_mode)
-            assert_image_similar(image, target, 12.0)
+            # the image.
+            target = hopper(mode)
+            if mode != self.rgb_mode:
+                target = target.convert(self.rgb_mode)
+            assert_image_similar(image, target, epsilon)
+
+    def test_write_rgb(self, tmp_path):
+        """
+        Can we write a RGB mode file to webp without error?
+        Does it have the bits we expect?
+        """
+
+        self._roundtrip(tmp_path, self.rgb_mode, 12.5)
+
+    def test_write_method(self, tmp_path):
+        self._roundtrip(tmp_path, self.rgb_mode, 12.0, {"method": 6})
+
+        buffer_no_args = io.BytesIO()
+        hopper().save(buffer_no_args, format="WEBP")
+
+        buffer_method = io.BytesIO()
+        hopper().save(buffer_method, format="WEBP", method=6)
+        assert buffer_no_args.getbuffer() != buffer_method.getbuffer()
 
     def test_write_unsupported_mode_L(self, tmp_path):
         """
@@ -89,18 +108,7 @@ class TestFileWebp:
         similar to the original file.
         """
 
-        temp_file = str(tmp_path / "temp.webp")
-        hopper("L").save(temp_file)
-        with Image.open(temp_file) as image:
-            assert image.mode == self.rgb_mode
-            assert image.size == (128, 128)
-            assert image.format == "WEBP"
-
-            image.load()
-            image.getdata()
-            target = hopper("L").convert(self.rgb_mode)
-
-            assert_image_similar(image, target, 10.0)
+        self._roundtrip(tmp_path, "L", 10.0)
 
     def test_write_unsupported_mode_P(self, tmp_path):
         """
@@ -108,18 +116,7 @@ class TestFileWebp:
         similar to the original file.
         """
 
-        temp_file = str(tmp_path / "temp.webp")
-        hopper("P").save(temp_file)
-        with Image.open(temp_file) as image:
-            assert image.mode == self.rgb_mode
-            assert image.size == (128, 128)
-            assert image.format == "WEBP"
-
-            image.load()
-            image.getdata()
-            target = hopper("P").convert(self.rgb_mode)
-
-            assert_image_similar(image, target, 50.0)
+        self._roundtrip(tmp_path, "P", 50.0)
 
     def test_WebPEncode_with_invalid_args(self):
         """
diff --git a/Tests/test_image_paste.py b/Tests/test_image_paste.py
index 1d3ca8135..3740fbcdc 100644
--- a/Tests/test_image_paste.py
+++ b/Tests/test_image_paste.py
@@ -236,7 +236,7 @@ class TestImagingPaste:
                 [
                     (127, 191, 254, 191),
                     (111, 207, 206, 110),
-                    (127, 254, 127, 0),
+                    (255, 255, 255, 0) if mode == "RGBA" else (127, 254, 127, 0),
                     (207, 207, 239, 239),
                     (191, 191, 190, 191),
                     (207, 206, 111, 112),
diff --git a/Tests/test_imagecms.py b/Tests/test_imagecms.py
index 921fdc369..953731215 100644
--- a/Tests/test_imagecms.py
+++ b/Tests/test_imagecms.py
@@ -4,7 +4,7 @@ import re
 from io import BytesIO
 
 import pytest
-from PIL import Image, ImageMode
+from PIL import Image, ImageMode, features
 
 from .helper import assert_image, assert_image_equal, assert_image_similar, hopper
 
@@ -46,7 +46,7 @@ def test_sanity():
     assert list(map(type, v)) == [str, str, str, str]
 
     # internal version number
-    assert re.search(r"\d+\.\d+$", ImageCms.core.littlecms_version)
+    assert re.search(r"\d+\.\d+$", features.version_module("littlecms2"))
 
     skip_missing()
     i = ImageCms.profileToProfile(hopper(), SRGB, SRGB)
diff --git a/Tests/test_imagefont.py b/Tests/test_imagefont.py
index e20950ca6..df03ac6b7 100644
--- a/Tests/test_imagefont.py
+++ b/Tests/test_imagefont.py
@@ -7,10 +7,11 @@ import sys
 from io import BytesIO
 
 import pytest
-from PIL import Image, ImageDraw, ImageFont
+from PIL import Image, ImageDraw, ImageFont, features
 
 from .helper import (
     assert_image_equal,
+    assert_image_equal_tofile,
     assert_image_similar,
     assert_image_similar_tofile,
     is_pypy,
@@ -40,7 +41,7 @@ class TestImageFont:
 
     @classmethod
     def setup_class(self):
-        freetype = distutils.version.StrictVersion(ImageFont.core.freetype2_version)
+        freetype = distutils.version.StrictVersion(features.version_module("freetype2"))
 
         self.metrics = self.METRICS["Default"]
         for conditions, metrics in self.METRICS.items():
@@ -67,7 +68,7 @@ class TestImageFont:
         )
 
     def test_sanity(self):
-        assert re.search(r"\d+\.\d+\.\d+$", ImageFont.core.freetype2_version)
+        assert re.search(r"\d+\.\d+\.\d+$", features.version_module("freetype2"))
 
     def test_font_properties(self):
         ttf = self.get_font()
@@ -150,6 +151,18 @@ class TestImageFont:
 
         assert_image_equal(img_path, img_filelike)
 
+    def test_transparent_background(self):
+        im = Image.new(mode="RGBA", size=(300, 100))
+        draw = ImageDraw.Draw(im)
+        ttf = self.get_font()
+
+        txt = "Hello World!"
+        draw.text((10, 10), txt, font=ttf)
+
+        target = "Tests/images/transparent_background_text.png"
+        with Image.open(target) as target_img:
+            assert_image_similar(im, target_img, 4.09)
+
     def test_textsize_equal(self):
         im = Image.new(mode="RGB", size=(300, 100))
         draw = ImageDraw.Draw(im)
@@ -607,7 +620,7 @@ class TestImageFont:
     def test_variation_get(self):
         font = self.get_font()
 
-        freetype = distutils.version.StrictVersion(ImageFont.core.freetype2_version)
+        freetype = distutils.version.StrictVersion(features.version_module("freetype2"))
         if freetype < "2.9.1":
             with pytest.raises(NotImplementedError):
                 font.get_variation_names()
@@ -679,7 +692,7 @@ class TestImageFont:
     def test_variation_set_by_name(self):
         font = self.get_font()
 
-        freetype = distutils.version.StrictVersion(ImageFont.core.freetype2_version)
+        freetype = distutils.version.StrictVersion(features.version_module("freetype2"))
         if freetype < "2.9.1":
             with pytest.raises(NotImplementedError):
                 font.set_variation_by_name("Bold")
@@ -703,7 +716,7 @@ class TestImageFont:
     def test_variation_set_by_axes(self):
         font = self.get_font()
 
-        freetype = distutils.version.StrictVersion(ImageFont.core.freetype2_version)
+        freetype = distutils.version.StrictVersion(features.version_module("freetype2"))
         if freetype < "2.9.1":
             with pytest.raises(NotImplementedError):
                 font.set_variation_by_axes([100])
@@ -724,3 +737,19 @@ class TestImageFont:
 @skip_unless_feature("raqm")
 class TestImageFont_RaqmLayout(TestImageFont):
     LAYOUT_ENGINE = ImageFont.LAYOUT_RAQM
+
+
+def test_render_mono_size():
+    # issue 4177
+
+    if distutils.version.StrictVersion(ImageFont.core.freetype2_version) < "2.4":
+        pytest.skip("Different metrics")
+
+    im = Image.new("P", (100, 30), "white")
+    draw = ImageDraw.Draw(im)
+    ttf = ImageFont.truetype(
+        "Tests/fonts/DejaVuSans.ttf", 18, layout_engine=ImageFont.LAYOUT_BASIC
+    )
+
+    draw.text((10, 10), "r" * 10, "black", ttf)
+    assert_image_equal_tofile(im, "Tests/images/text_mono.gif")
diff --git a/Tests/test_imagegrab.py b/Tests/test_imagegrab.py
index 82e746fda..23eee2445 100644
--- a/Tests/test_imagegrab.py
+++ b/Tests/test_imagegrab.py
@@ -1,10 +1,11 @@
+import os
 import subprocess
 import sys
 
 import pytest
 from PIL import Image, ImageGrab
 
-from .helper import assert_image
+from .helper import assert_image, assert_image_equal_tofile
 
 
 class TestImageGrab:
@@ -71,3 +72,27 @@ $bmp = New-Object Drawing.Bitmap 200, 200
 
         im = ImageGrab.grabclipboard()
         assert_image(im, im.mode, im.size)
+
+    @pytest.mark.skipif(sys.platform != "win32", reason="Windows only")
+    def test_grabclipboard_file(self):
+        p = subprocess.Popen(["powershell", "-command", "-"], stdin=subprocess.PIPE)
+        p.stdin.write(rb'Set-Clipboard -Path "Tests\images\hopper.gif"')
+        p.communicate()
+
+        im = ImageGrab.grabclipboard()
+        assert len(im) == 1
+        assert os.path.samefile(im[0], "Tests/images/hopper.gif")
+
+    @pytest.mark.skipif(sys.platform != "win32", reason="Windows only")
+    def test_grabclipboard_png(self):
+        p = subprocess.Popen(["powershell", "-command", "-"], stdin=subprocess.PIPE)
+        p.stdin.write(
+            rb"""$bytes = [System.IO.File]::ReadAllBytes("Tests\images\hopper.png")
+$ms = new-object System.IO.MemoryStream(, $bytes)
+[Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
+[Windows.Forms.Clipboard]::SetData("PNG", $ms)"""
+        )
+        p.communicate()
+
+        im = ImageGrab.grabclipboard()
+        assert_image_equal_tofile(im, "Tests/images/hopper.png")
diff --git a/Tests/test_imageshow.py b/Tests/test_imageshow.py
index 64f15326b..fddc73bd1 100644
--- a/Tests/test_imageshow.py
+++ b/Tests/test_imageshow.py
@@ -17,19 +17,21 @@ def test_register():
     ImageShow._viewers.pop()
 
 
-def test_viewer_show():
+@pytest.mark.parametrize(
+    "order", [-1, 0],
+)
+def test_viewer_show(order):
     class TestViewer(ImageShow.Viewer):
-        methodCalled = False
-
         def show_image(self, image, **options):
             self.methodCalled = True
             return True
 
     viewer = TestViewer()
-    ImageShow.register(viewer, -1)
+    ImageShow.register(viewer, order)
 
     for mode in ("1", "I;16", "LA", "RGB", "RGBA"):
-        with hopper() as im:
+        viewer.methodCalled = False
+        with hopper(mode) as im:
             assert ImageShow.show(im)
         assert viewer.methodCalled
 
diff --git a/docs/deprecations.rst b/docs/deprecations.rst
index 203921c0b..885fba4cd 100644
--- a/docs/deprecations.rst
+++ b/docs/deprecations.rst
@@ -18,7 +18,7 @@ ImageFile.raise_ioerror
 .. deprecated:: 7.2.0
 
 ``IOError`` was merged into ``OSError`` in Python 3.3. So, ``ImageFile.raise_ioerror``
-is now deprecated and will be removed in a future released. Use
+is now deprecated and will be removed in a future release. Use
 ``ImageFile.raise_oserror`` instead.
 
 PILLOW_VERSION constant
diff --git a/docs/installation.rst b/docs/installation.rst
index 1b5f2e056..e46bdf56c 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -156,7 +156,7 @@ Many of Pillow's features require external libraries:
 * **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 **2.7-2.9**.
+    above uses liblcms2. Tested with **1.19** and **2.7-2.11**.
 
 * **libwebp** provides the WebP format.
 
diff --git a/docs/reference/features.rst b/docs/reference/features.rst
index 196f938ed..47e9a6d63 100644
--- a/docs/reference/features.rst
+++ b/docs/reference/features.rst
@@ -8,6 +8,7 @@ The :py:mod:`PIL.features` module can be used to detect which Pillow features ar
 
 .. autofunction:: PIL.features.pilinfo
 .. autofunction:: PIL.features.check
+.. autofunction:: PIL.features.version
 .. autofunction:: PIL.features.get_supported
 
 Modules
@@ -16,28 +17,31 @@ Modules
 Support for the following modules can be checked:
 
 * ``pil``: The Pillow core module, required for all functionality.
-* ``tkinter``: Tkinter support.
+* ``tkinter``: Tkinter support. Version number not available.
 * ``freetype2``: FreeType font support via :py:func:`PIL.ImageFont.truetype`.
 * ``littlecms2``: LittleCMS 2 support via :py:mod:`PIL.ImageCms`.
 * ``webp``: WebP image support.
 
 .. autofunction:: PIL.features.check_module
+.. autofunction:: PIL.features.version_module
 .. autofunction:: PIL.features.get_supported_modules
 
 Codecs
 ------
 
-These are only checked during Pillow compilation.
+Support for these is only checked during Pillow compilation.
 If the required library was uninstalled from the system, the ``pil`` core module may fail to load instead.
+Except for ``jpg``, the version number is checked at run-time.
 
 Support for the following codecs can be checked:
 
-* ``jpg``: (compile time) Libjpeg support, required for JPEG based image formats.
+* ``jpg``: (compile time) Libjpeg support, required for JPEG based image formats. Only compile time version number is available.
 * ``jpg_2000``: (compile time) OpenJPEG support, required for JPEG 2000 image formats.
 * ``zlib``: (compile time) Zlib support, required for zlib compressed formats, such as PNG.
 * ``libtiff``: (compile time) LibTIFF support, required for TIFF based image formats.
 
 .. autofunction:: PIL.features.check_codec
+.. autofunction:: PIL.features.version_codec
 .. autofunction:: PIL.features.get_supported_codecs
 
 Features
@@ -45,16 +49,18 @@ Features
 
 Some of these are only checked during Pillow compilation.
 If the required library was uninstalled from the system, the relevant module may fail to load instead.
+Feature version numbers are available only where stated.
 
 Support for the following features can be checked:
 
-* ``libjpeg_turbo``: (compile time) Whether Pillow was compiled against the libjpeg-turbo version of libjpeg.
+* ``libjpeg_turbo``: (compile time) Whether Pillow was compiled against the libjpeg-turbo version of libjpeg. Compile-time version number is available.
 * ``transp_webp``: Support for transparency in WebP images.
 * ``webp_mux``: (compile time) Support for EXIF data in WebP images.
 * ``webp_anim``: (compile time) Support for animated WebP images.
-* ``raqm``: Raqm library, required for ``ImageFont.LAYOUT_RAQM`` in :py:func:`PIL.ImageFont.truetype`.
-* ``libimagequant``: (compile time) ImageQuant quantization support in :py:func:`PIL.Image.Image.quantize`.
+* ``raqm``: Raqm library, required for ``ImageFont.LAYOUT_RAQM`` in :py:func:`PIL.ImageFont.truetype`. Run-time version number is available for Raqm 0.7.0 or newer.
+* ``libimagequant``: (compile time) ImageQuant quantization support in :py:func:`PIL.Image.Image.quantize`. Run-time version number is available.
 * ``xcb``: (compile time) Support for X11 in :py:func:`PIL.ImageGrab.grab` via the XCB library.
 
 .. autofunction:: PIL.features.check_feature
+.. autofunction:: PIL.features.version_feature
 .. autofunction:: PIL.features.get_supported_features
diff --git a/docs/releasenotes/7.2.0.rst b/docs/releasenotes/7.2.0.rst
index 904e9d5ab..26a1464a4 100644
--- a/docs/releasenotes/7.2.0.rst
+++ b/docs/releasenotes/7.2.0.rst
@@ -27,3 +27,19 @@ Moved from the legacy :py:class:`PIL.TiffImagePlugin.ImageFileDirectory_v1` to
 :py:class:`PIL.Image.Exif`. This means that Exif RATIONALs and SIGNED_RATIONALs
 are now read as :py:class:`PIL.TiffImagePlugin.IFDRational`, instead of as a
 tuple with a numerator and a denominator.
+
+TIFF BYTE tags format
+^^^^^^^^^^^^^^^^^^^^^
+
+TIFF BYTE tags were previously read as a tuple containing a bytestring. They
+are now read as just a single bytestring.
+
+Deprecations
+^^^^^^^^^^^^
+
+ImageFile.raise_ioerror
+~~~~~~~~~~~~~~~~~~~~~~~
+
+``IOError`` was merged into ``OSError`` in Python 3.3. So, ``ImageFile.raise_ioerror``
+is now deprecated and will be removed in a future release. Use
+``ImageFile.raise_oserror`` instead.
diff --git a/src/PIL/IcnsImagePlugin.py b/src/PIL/IcnsImagePlugin.py
index c00392615..9de7d8dfe 100644
--- a/src/PIL/IcnsImagePlugin.py
+++ b/src/PIL/IcnsImagePlugin.py
@@ -23,10 +23,10 @@ import subprocess
 import sys
 import tempfile
 
-from PIL import Image, ImageFile, PngImagePlugin
+from PIL import Image, ImageFile, PngImagePlugin, features
 from PIL._binary import i8
 
-enable_jpeg2k = hasattr(Image.core, "jp2klib_version")
+enable_jpeg2k = features.check_codec("jpg_2000")
 if enable_jpeg2k:
     from PIL import Jpeg2KImagePlugin
 
diff --git a/src/PIL/Image.py b/src/PIL/Image.py
index 9d94bce0e..2fc37d9ce 100644
--- a/src/PIL/Image.py
+++ b/src/PIL/Image.py
@@ -3139,11 +3139,10 @@ def register_encoder(name, encoder):
 
 
 # --------------------------------------------------------------------
-# Simple display support.  User code may override this.
+# Simple display support.
 
 
 def _show(image, **options):
-    # override me, as necessary
     _showxv(image, **options)
 
 
diff --git a/src/PIL/ImageFont.py b/src/PIL/ImageFont.py
index 79c161713..617a7e5a7 100644
--- a/src/PIL/ImageFont.py
+++ b/src/PIL/ImageFont.py
@@ -259,7 +259,7 @@ class FreeTypeFont:
 
         :return: (width, height)
         """
-        size, offset = self.font.getsize(text, direction, features, language)
+        size, offset = self.font.getsize(text, False, direction, features, language)
         return (
             size[0] + stroke_width * 2 + offset[0],
             size[1] + stroke_width * 2 + offset[1],
@@ -468,7 +468,9 @@ class FreeTypeFont:
                  :py:mod:`PIL.Image.core` interface module, and the text offset, the
                  gap between the starting coordinate and the first marking
         """
-        size, offset = self.font.getsize(text, direction, features, language)
+        size, offset = self.font.getsize(
+            text, mode == "1", direction, features, language
+        )
         size = size[0] + stroke_width * 2, size[1] + stroke_width * 2
         im = fill("L", size, 0)
         self.font.render(
diff --git a/src/PIL/ImageGrab.py b/src/PIL/ImageGrab.py
index 8b38df323..3fa338b0a 100644
--- a/src/PIL/ImageGrab.py
+++ b/src/PIL/ImageGrab.py
@@ -93,12 +93,28 @@ def grabclipboard():
         os.unlink(filepath)
         return im
     elif sys.platform == "win32":
-        data = Image.core.grabclipboard_win32()
+        fmt, data = Image.core.grabclipboard_win32()
+        if fmt == "file":  # CF_HDROP
+            import struct
+
+            o = struct.unpack_from("I", data)[0]
+            if data[16] != 0:
+                files = data[o:].decode("utf-16le").split("\0")
+            else:
+                files = data[o:].decode("mbcs").split("\0")
+            return files[: files.index("")]
         if isinstance(data, bytes):
-            from . import BmpImagePlugin
             import io
 
-            return BmpImagePlugin.DibImageFile(io.BytesIO(data))
-        return data
+            data = io.BytesIO(data)
+            if fmt == "png":
+                from . import PngImagePlugin
+
+                return PngImagePlugin.PngImageFile(data)
+            elif fmt == "DIB":
+                from . import BmpImagePlugin
+
+                return BmpImagePlugin.DibImageFile(data)
+        return None
     else:
         raise NotImplementedError("ImageGrab.grabclipboard() is macOS and Windows only")
diff --git a/src/PIL/ImageShow.py b/src/PIL/ImageShow.py
index fc5089423..cd85e81b4 100644
--- a/src/PIL/ImageShow.py
+++ b/src/PIL/ImageShow.py
@@ -31,7 +31,7 @@ def register(viewer, order=1):
         pass  # raised if viewer wasn't a class
     if order > 0:
         _viewers.append(viewer)
-    elif order < 0:
+    else:
         _viewers.insert(0, viewer)
 
 
diff --git a/src/PIL/PdfParser.py b/src/PIL/PdfParser.py
index fdb35eded..3c343c5e8 100644
--- a/src/PIL/PdfParser.py
+++ b/src/PIL/PdfParser.py
@@ -251,8 +251,8 @@ class PdfDict(collections.UserDict):
     def __getattr__(self, key):
         try:
             value = self[key.encode("us-ascii")]
-        except KeyError:
-            raise AttributeError(key)
+        except KeyError as e:
+            raise AttributeError(key) from e
         if isinstance(value, bytes):
             value = decode_text(value)
         if key.endswith("Date"):
@@ -811,11 +811,11 @@ class PdfParser:
             if m:
                 try:
                     stream_len = int(result[b"Length"])
-                except (TypeError, KeyError, ValueError):
+                except (TypeError, KeyError, ValueError) as e:
                     raise PdfFormatError(
                         "bad or missing Length in stream dict (%r)"
                         % result.get(b"Length", None)
-                    )
+                    ) from e
                 stream_data = data[m.end() : m.end() + stream_len]
                 m = cls.re_stream_end.match(data, m.end() + stream_len)
                 check_format_condition(m, "stream end not found")
diff --git a/src/PIL/TiffImagePlugin.py b/src/PIL/TiffImagePlugin.py
index 8e7570062..bee05e6ed 100644
--- a/src/PIL/TiffImagePlugin.py
+++ b/src/PIL/TiffImagePlugin.py
@@ -553,9 +553,10 @@ class ImageFileDirectory_v2(MutableMapping):
                         )
                 elif all(isinstance(v, float) for v in values):
                     self.tagtype[tag] = TiffTags.DOUBLE
-                else:
-                    if all(isinstance(v, str) for v in values):
-                        self.tagtype[tag] = TiffTags.ASCII
+                elif all(isinstance(v, str) for v in values):
+                    self.tagtype[tag] = TiffTags.ASCII
+                elif all(isinstance(v, bytes) for v in values):
+                    self.tagtype[tag] = TiffTags.BYTE
 
         if self.tagtype[tag] == TiffTags.UNDEFINED:
             values = [
@@ -573,8 +574,10 @@ class ImageFileDirectory_v2(MutableMapping):
         # Spec'd length == 1, Actual > 1, Warn and truncate. Formerly barfed.
         # No Spec, Actual length 1, Formerly (<4.2) returned a 1 element tuple.
         # Don't mess with the legacy api, since it's frozen.
-        if (info.length == 1) or (
-            info.length is None and len(values) == 1 and not legacy_api
+        if (
+            (info.length == 1)
+            or self.tagtype[tag] == TiffTags.BYTE
+            or (info.length is None and len(values) == 1 and not legacy_api)
         ):
             # Don't mess with the legacy api, since it's frozen.
             if legacy_api and self.tagtype[tag] in [
@@ -1405,6 +1408,9 @@ def _save(im, fp, filename):
     compression = im.encoderinfo.get("compression", im.info.get("compression"))
     if compression is None:
         compression = "raw"
+    elif compression == "tiff_jpeg":
+        # OJPEG is obsolete, so use new-style JPEG compression instead
+        compression = "jpeg"
 
     libtiff = WRITE_LIBTIFF or compression != "raw"
 
@@ -1485,7 +1491,10 @@ def _save(im, fp, filename):
     # data orientation
     stride = len(bits) * ((im.size[0] * bits[0] + 7) // 8)
     ifd[ROWSPERSTRIP] = im.size[1]
-    ifd[STRIPBYTECOUNTS] = stride * im.size[1]
+    strip_byte_counts = stride * im.size[1]
+    if strip_byte_counts >= 2 ** 16:
+        ifd.tagtype[STRIPBYTECOUNTS] = TiffTags.LONG
+    ifd[STRIPBYTECOUNTS] = strip_byte_counts
     ifd[STRIPOFFSETS] = 0  # this is adjusted by IFD writer
     # no compression by default:
     ifd[COMPRESSION] = COMPRESSION_INFO_REV.get(compression, 1)
@@ -1546,16 +1555,17 @@ def _save(im, fp, filename):
             # Custom items are supported for int, float, unicode, string and byte
             # values. Other types and tuples require a tagtype.
             if tag not in TiffTags.LIBTIFF_CORE:
-                if (
-                    TiffTags.lookup(tag).type == TiffTags.UNDEFINED
-                    or not Image.core.libtiff_support_custom_tags
-                ):
+                if not Image.core.libtiff_support_custom_tags:
                     continue
 
                 if tag in ifd.tagtype:
                     types[tag] = ifd.tagtype[tag]
                 elif not (isinstance(value, (int, float, str, bytes))):
                     continue
+                else:
+                    type = TiffTags.lookup(tag).type
+                    if type:
+                        types[tag] = type
             if tag not in atts and tag not in blocklist:
                 if isinstance(value, str):
                     atts[tag] = value.encode("ascii", "replace") + b"\0"
diff --git a/src/PIL/WebPImagePlugin.py b/src/PIL/WebPImagePlugin.py
index 3b9fe8f75..2e9746fa3 100644
--- a/src/PIL/WebPImagePlugin.py
+++ b/src/PIL/WebPImagePlugin.py
@@ -314,6 +314,7 @@ def _save(im, fp, filename):
     if isinstance(exif, Image.Exif):
         exif = exif.tobytes()
     xmp = im.encoderinfo.get("xmp", "")
+    method = im.encoderinfo.get("method", 0)
 
     if im.mode not in _VALID_WEBP_LEGACY_MODES:
         alpha = (
@@ -331,6 +332,7 @@ def _save(im, fp, filename):
         float(quality),
         im.mode,
         icc_profile,
+        method,
         exif,
         xmp,
     )
diff --git a/src/PIL/features.py b/src/PIL/features.py
index 33e89cf24..66b093350 100644
--- a/src/PIL/features.py
+++ b/src/PIL/features.py
@@ -8,11 +8,11 @@ import PIL
 from . import Image
 
 modules = {
-    "pil": "PIL._imaging",
-    "tkinter": "PIL._tkinter_finder",
-    "freetype2": "PIL._imagingft",
-    "littlecms2": "PIL._imagingcms",
-    "webp": "PIL._webp",
+    "pil": ("PIL._imaging", "PILLOW_VERSION"),
+    "tkinter": ("PIL._tkinter_finder", None),
+    "freetype2": ("PIL._imagingft", "freetype2_version"),
+    "littlecms2": ("PIL._imagingcms", "littlecms_version"),
+    "webp": ("PIL._webp", "webpdecoder_version"),
 }
 
 
@@ -27,7 +27,7 @@ def check_module(feature):
     if not (feature in modules):
         raise ValueError("Unknown module %s" % feature)
 
-    module = modules[feature]
+    module, ver = modules[feature]
 
     try:
         __import__(module)
@@ -36,6 +36,24 @@ def check_module(feature):
         return False
 
 
+def version_module(feature):
+    """
+    :param feature: The module to check for.
+    :returns:
+        The loaded version number as a string, or ``None`` if unknown or not available.
+    :raises ValueError: If the module is not defined in this version of Pillow.
+    """
+    if not check_module(feature):
+        return None
+
+    module, ver = modules[feature]
+
+    if ver is None:
+        return None
+
+    return getattr(__import__(module, fromlist=[ver]), ver)
+
+
 def get_supported_modules():
     """
     :returns: A list of all supported modules.
@@ -43,7 +61,12 @@ def get_supported_modules():
     return [f for f in modules if check_module(f)]
 
 
-codecs = {"jpg": "jpeg", "jpg_2000": "jpeg2k", "zlib": "zip", "libtiff": "libtiff"}
+codecs = {
+    "jpg": ("jpeg", "jpeglib"),
+    "jpg_2000": ("jpeg2k", "jp2klib"),
+    "zlib": ("zip", "zlib"),
+    "libtiff": ("libtiff", "libtiff"),
+}
 
 
 def check_codec(feature):
@@ -57,11 +80,32 @@ def check_codec(feature):
     if feature not in codecs:
         raise ValueError("Unknown codec %s" % feature)
 
-    codec = codecs[feature]
+    codec, lib = codecs[feature]
 
     return codec + "_encoder" in dir(Image.core)
 
 
+def version_codec(feature):
+    """
+    :param feature: The codec to check for.
+    :returns:
+        The version number as a string, or ``None`` if not available.
+        Checked at compile time for ``jpg``, run-time otherwise.
+    :raises ValueError: If the codec is not defined in this version of Pillow.
+    """
+    if not check_codec(feature):
+        return None
+
+    codec, lib = codecs[feature]
+
+    version = getattr(Image.core, lib + "_version")
+
+    if feature == "libtiff":
+        return version.split("\n")[0].split("Version ")[1]
+
+    return version
+
+
 def get_supported_codecs():
     """
     :returns: A list of all supported codecs.
@@ -70,13 +114,13 @@ def get_supported_codecs():
 
 
 features = {
-    "webp_anim": ("PIL._webp", "HAVE_WEBPANIM"),
-    "webp_mux": ("PIL._webp", "HAVE_WEBPMUX"),
-    "transp_webp": ("PIL._webp", "HAVE_TRANSPARENCY"),
-    "raqm": ("PIL._imagingft", "HAVE_RAQM"),
-    "libjpeg_turbo": ("PIL._imaging", "HAVE_LIBJPEGTURBO"),
-    "libimagequant": ("PIL._imaging", "HAVE_LIBIMAGEQUANT"),
-    "xcb": ("PIL._imaging", "HAVE_XCB"),
+    "webp_anim": ("PIL._webp", "HAVE_WEBPANIM", None),
+    "webp_mux": ("PIL._webp", "HAVE_WEBPMUX", None),
+    "transp_webp": ("PIL._webp", "HAVE_TRANSPARENCY", None),
+    "raqm": ("PIL._imagingft", "HAVE_RAQM", "raqm_version"),
+    "libjpeg_turbo": ("PIL._imaging", "HAVE_LIBJPEGTURBO", "libjpeg_turbo_version"),
+    "libimagequant": ("PIL._imaging", "HAVE_LIBIMAGEQUANT", "imagequant_version"),
+    "xcb": ("PIL._imaging", "HAVE_XCB", None),
 }
 
 
@@ -91,7 +135,7 @@ def check_feature(feature):
     if feature not in features:
         raise ValueError("Unknown feature %s" % feature)
 
-    module, flag = features[feature]
+    module, flag, ver = features[feature]
 
     try:
         imported_module = __import__(module, fromlist=["PIL"])
@@ -100,6 +144,23 @@ def check_feature(feature):
         return None
 
 
+def version_feature(feature):
+    """
+    :param feature: The feature to check for.
+    :returns: The version number as a string, or ``None`` if not available.
+    :raises ValueError: If the feature is not defined in this version of Pillow.
+    """
+    if not check_feature(feature):
+        return None
+
+    module, flag, ver = features[feature]
+
+    if ver is None:
+        return None
+
+    return getattr(__import__(module, fromlist=[ver]), ver)
+
+
 def get_supported_features():
     """
     :returns: A list of all supported features.
@@ -109,9 +170,9 @@ def get_supported_features():
 
 def check(feature):
     """
-    :param feature: A module, feature, or codec name.
+    :param feature: A module, codec, or feature name.
     :returns:
-        ``True`` if the module, feature, or codec is available,
+        ``True`` if the module, codec, or feature is available,
         ``False`` or ``None`` otherwise.
     """
 
@@ -125,6 +186,22 @@ def check(feature):
     return False
 
 
+def version(feature):
+    """
+    :param feature:
+        The module, codec, or feature to check for.
+    :returns:
+        The version number as a string, or ``None`` if unknown or not available.
+    """
+    if feature in modules:
+        return version_module(feature)
+    if feature in codecs:
+        return version_codec(feature)
+    if feature in features:
+        return version_feature(feature)
+    return None
+
+
 def get_supported():
     """
     :returns: A list of all supported modules, features, and codecs.
@@ -187,7 +264,15 @@ def pilinfo(out=None, supported_formats=True):
         ("xcb", "XCB (X protocol)"),
     ]:
         if check(name):
-            print("---", feature, "support ok", file=out)
+            if name == "jpg" and check_feature("libjpeg_turbo"):
+                v = "libjpeg-turbo " + version_feature("libjpeg_turbo")
+            else:
+                v = version(name)
+            if v is not None:
+                t = "compiled for" if name in ("pil", "jpg") else "loaded"
+                print("---", feature, "support ok,", t, v, file=out)
+            else:
+                print("---", feature, "support ok", file=out)
         else:
             print("***", feature, "support not installed", file=out)
     print("-" * 68, file=out)
diff --git a/src/_imaging.c b/src/_imaging.c
index 40bfbf2fe..1ed5e8a42 100644
--- a/src/_imaging.c
+++ b/src/_imaging.c
@@ -4168,12 +4168,21 @@ setup_module(PyObject* m) {
 
 #ifdef LIBJPEG_TURBO_VERSION
     PyModule_AddObject(m, "HAVE_LIBJPEGTURBO", Py_True);
+    #define tostr1(a) #a
+    #define tostr(a) tostr1(a)
+    PyDict_SetItemString(d, "libjpeg_turbo_version", PyUnicode_FromString(tostr(LIBJPEG_TURBO_VERSION)));
+    #undef tostr
+    #undef tostr1
 #else
     PyModule_AddObject(m, "HAVE_LIBJPEGTURBO", Py_False);
 #endif
 
 #ifdef HAVE_LIBIMAGEQUANT
     PyModule_AddObject(m, "HAVE_LIBIMAGEQUANT", Py_True);
+    {
+        extern const char* ImagingImageQuantVersion(void);
+        PyDict_SetItemString(d, "imagequant_version", PyUnicode_FromString(ImagingImageQuantVersion()));
+    }
 #else
     PyModule_AddObject(m, "HAVE_LIBIMAGEQUANT", Py_False);
 #endif
diff --git a/src/_imagingcms.c b/src/_imagingcms.c
index 60b6b7228..7f23d5964 100644
--- a/src/_imagingcms.c
+++ b/src/_imagingcms.c
@@ -1608,6 +1608,7 @@ static int
 setup_module(PyObject* m) {
     PyObject *d;
     PyObject *v;
+    int vn;
 
     d = PyModule_GetDict(m);
 
@@ -1622,7 +1623,8 @@ setup_module(PyObject* m) {
 
     d = PyModule_GetDict(m);
 
-    v = PyUnicode_FromFormat("%d.%d", LCMS_VERSION / 100, LCMS_VERSION % 100);
+    vn = cmsGetEncodedCMMversion();
+    v = PyUnicode_FromFormat("%d.%d", vn / 100, vn % 100);
     PyDict_SetItemString(d, "littlecms_version", v);
 
     return 0;
diff --git a/src/_imagingft.c b/src/_imagingft.c
index e0ff7521c..f2ca26e2d 100644
--- a/src/_imagingft.c
+++ b/src/_imagingft.c
@@ -81,6 +81,7 @@ typedef struct {
 
 static PyTypeObject Font_Type;
 
+typedef const char* (*t_raqm_version_string) (void);
 typedef bool (*t_raqm_version_atleast)(unsigned int major,
                                        unsigned int minor,
                                        unsigned int micro);
@@ -112,6 +113,7 @@ typedef void (*t_raqm_destroy) (raqm_t *rq);
 typedef struct {
     void* raqm;
     int version;
+    t_raqm_version_string version_string;
     t_raqm_version_atleast version_atleast;
     t_raqm_create create;
     t_raqm_set_text set_text;
@@ -173,6 +175,7 @@ setraqm(void)
     }
 
 #ifndef _WIN32
+    p_raqm.version_string = (t_raqm_version_atleast)dlsym(p_raqm.raqm, "raqm_version_string");
     p_raqm.version_atleast = (t_raqm_version_atleast)dlsym(p_raqm.raqm, "raqm_version_atleast");
     p_raqm.create = (t_raqm_create)dlsym(p_raqm.raqm, "raqm_create");
     p_raqm.set_text = (t_raqm_set_text)dlsym(p_raqm.raqm, "raqm_set_text");
@@ -206,6 +209,7 @@ setraqm(void)
         return 2;
     }
 #else
+    p_raqm.version_string = (t_raqm_version_atleast)GetProcAddress(p_raqm.raqm, "raqm_version_string");
     p_raqm.version_atleast = (t_raqm_version_atleast)GetProcAddress(p_raqm.raqm, "raqm_version_atleast");
     p_raqm.create = (t_raqm_create)GetProcAddress(p_raqm.raqm, "raqm_create");
     p_raqm.set_text = (t_raqm_set_text)GetProcAddress(p_raqm.raqm, "raqm_set_text");
@@ -609,6 +613,8 @@ font_getsize(FontObject* self, PyObject* args)
     FT_Face face;
     int xoffset, yoffset;
     int horizontal_dir;
+    int mask = 0;
+    int load_flags;
     const char *dir = NULL;
     const char *lang = NULL;
     size_t i, count;
@@ -618,11 +624,11 @@ font_getsize(FontObject* self, PyObject* args)
     /* calculate size and bearing for a given string */
 
     PyObject* string;
-    if (!PyArg_ParseTuple(args, "O|zOz:getsize", &string, &dir, &features, &lang)) {
+    if (!PyArg_ParseTuple(args, "O|izOz:getsize", &string, &mask, &dir, &features, &lang)) {
         return NULL;
     }
 
-    count = text_layout(string, self, dir, features, lang, &glyph_info, 0);
+    count = text_layout(string, self, dir, features, lang, &glyph_info, mask);
     if (PyErr_Occurred()) {
         return NULL;
     }
@@ -641,7 +647,11 @@ font_getsize(FontObject* self, PyObject* args)
         /* Note: bitmap fonts within ttf fonts do not work, see #891/pr#960
          *   Yifu Yu<root@jackyyf.com>, 2014-10-15
          */
-        error = FT_Load_Glyph(face, index, FT_LOAD_DEFAULT|FT_LOAD_NO_BITMAP);
+        load_flags = FT_LOAD_NO_BITMAP;
+        if (mask) {
+            load_flags |= FT_LOAD_TARGET_MONO;
+        }
+        error = FT_Load_Glyph(face, index, load_flags);
         if (error) {
             return geterror(error);
         }
@@ -1251,6 +1261,9 @@ setup_module(PyObject* m) {
     setraqm();
     v = PyBool_FromLong(!!p_raqm.raqm);
     PyDict_SetItemString(d, "HAVE_RAQM", v);
+    if (p_raqm.version_string) {
+        PyDict_SetItemString(d, "raqm_version", PyUnicode_FromString(p_raqm.version_string()));
+    }
 
     return 0;
 }
diff --git a/src/_webp.c b/src/_webp.c
index a4138ad0f..468a9ff73 100644
--- a/src/_webp.c
+++ b/src/_webp.c
@@ -545,6 +545,7 @@ PyObject* WebPEncode_wrapper(PyObject* self, PyObject* args)
     int height;
     int lossless;
     float quality_factor;
+    int method;
     uint8_t* rgb;
     uint8_t* icc_bytes;
     uint8_t* exif_bytes;
@@ -556,49 +557,75 @@ PyObject* WebPEncode_wrapper(PyObject* self, PyObject* args)
     Py_ssize_t exif_size;
     Py_ssize_t xmp_size;
     size_t ret_size;
+    int rgba_mode;
+    int channels;
+    int ok;
     ImagingSectionCookie cookie;
+    WebPConfig config;
+    WebPMemoryWriter writer;
+    WebPPicture pic;
 
-    if (!PyArg_ParseTuple(args, "y#iiifss#s#s#",
+    if (!PyArg_ParseTuple(args, "y#iiifss#is#s#",
                 (char**)&rgb, &size, &width, &height, &lossless, &quality_factor, &mode,
-                &icc_bytes, &icc_size, &exif_bytes, &exif_size, &xmp_bytes, &xmp_size)) {
+                &icc_bytes, &icc_size, &method, &exif_bytes, &exif_size, &xmp_bytes, &xmp_size)) {
         return NULL;
     }
-    if (strcmp(mode, "RGBA")==0){
-        if (size < width * height * 4){
-            Py_RETURN_NONE;
-        }
-        #if WEBP_ENCODER_ABI_VERSION >= 0x0100
-        if (lossless) {
-            ImagingSectionEnter(&cookie);
-            ret_size = WebPEncodeLosslessRGBA(rgb, width, height, 4 * width, &output);
-            ImagingSectionLeave(&cookie);
-        } else
-        #endif
-        {
-            ImagingSectionEnter(&cookie);
-            ret_size = WebPEncodeRGBA(rgb, width, height, 4 * width, quality_factor, &output);
-            ImagingSectionLeave(&cookie);
-        }
-    } else if (strcmp(mode, "RGB")==0){
-        if (size < width * height * 3){
-            Py_RETURN_NONE;
-        }
-        #if WEBP_ENCODER_ABI_VERSION >= 0x0100
-        if (lossless) {
-            ImagingSectionEnter(&cookie);
-            ret_size = WebPEncodeLosslessRGB(rgb, width, height, 3 * width, &output);
-            ImagingSectionLeave(&cookie);
-        } else
-        #endif
-        {
-            ImagingSectionEnter(&cookie);
-            ret_size = WebPEncodeRGB(rgb, width, height, 3 * width, quality_factor, &output);
-            ImagingSectionLeave(&cookie);
-        }
-    } else {
+
+    rgba_mode = strcmp(mode, "RGBA") == 0;
+    if (!rgba_mode && strcmp(mode, "RGB") != 0) {
         Py_RETURN_NONE;
     }
 
+    channels = rgba_mode ? 4 : 3;
+    if (size < width * height * channels) {
+        Py_RETURN_NONE;
+    }
+
+    // Setup config for this frame
+    if (!WebPConfigInit(&config)) {
+        PyErr_SetString(PyExc_RuntimeError, "failed to initialize config!");
+        return NULL;
+    }
+    config.lossless = lossless;
+    config.quality = quality_factor;
+    config.method = method;
+
+    // Validate the config
+    if (!WebPValidateConfig(&config)) {
+        PyErr_SetString(PyExc_ValueError, "invalid configuration");
+        return NULL;
+    }
+
+    if (!WebPPictureInit(&pic)) {
+        PyErr_SetString(PyExc_ValueError, "could not initialise picture");
+        return NULL;
+    }
+    pic.width = width;
+    pic.height = height;
+    pic.use_argb = 1; // Don't convert RGB pixels to YUV
+
+    if (rgba_mode) {
+        WebPPictureImportRGBA(&pic, rgb, channels * width);
+    } else {
+        WebPPictureImportRGB(&pic, rgb, channels * width);
+    }
+
+    WebPMemoryWriterInit(&writer);
+    pic.writer = WebPMemoryWrite;
+    pic.custom_ptr = &writer;
+
+    ImagingSectionEnter(&cookie);
+    ok = WebPEncode(&config, &pic);
+    ImagingSectionLeave(&cookie);
+
+    WebPPictureFree(&pic);
+    if (!ok) {
+        PyErr_SetString(PyExc_ValueError, "encoding error");
+        return NULL;
+    }
+    output = writer.mem;
+    ret_size = writer.size;
+
 #ifndef HAVE_WEBPMUX
     if (ret_size > 0) {
         PyObject *ret = PyBytes_FromStringAndSize((char*)output, ret_size);
@@ -794,6 +821,16 @@ PyObject* WebPDecoderVersion_wrapper() {
     return Py_BuildValue("i", WebPGetDecoderVersion());
 }
 
+// Version as string
+const char*
+WebPDecoderVersion_str(void)
+{
+    static char version[20];
+    int version_number = WebPGetDecoderVersion();
+    sprintf(version, "%d.%d.%d", version_number >> 16, (version_number >> 8) % 0x100, version_number % 0x100);
+    return version;
+}
+
 /*
  * The version of webp that ships with (0.1.3) Ubuntu 12.04 doesn't handle alpha well.
  * Files that are valid with 0.3 are reported as being invalid.
@@ -845,10 +882,13 @@ void addTransparencyFlagToModule(PyObject* m) {
 }
 
 static int setup_module(PyObject* m) {
+    PyObject* d = PyModule_GetDict(m);
     addMuxFlagToModule(m);
     addAnimFlagToModule(m);
     addTransparencyFlagToModule(m);
 
+    PyDict_SetItemString(d, "webpdecoder_version", PyUnicode_FromString(WebPDecoderVersion_str()));
+
 #ifdef HAVE_WEBPANIM
     /* Ready object types */
     if (PyType_Ready(&WebPAnimDecoder_Type) < 0 ||
diff --git a/src/display.c b/src/display.c
index ce2cf7e98..6ca922e43 100644
--- a/src/display.c
+++ b/src/display.c
@@ -502,33 +502,45 @@ PyObject*
 PyImaging_GrabClipboardWin32(PyObject* self, PyObject* args)
 {
     int clip;
-    HANDLE handle;
+    HANDLE handle = NULL;
     int size;
     void* data;
     PyObject* result;
+    UINT format;
+    UINT formats[] = { CF_DIB, CF_DIBV5, CF_HDROP, RegisterClipboardFormatA("PNG"), 0 };
+    LPCSTR format_names[] = { "DIB", "DIB", "file", "png", NULL };
 
-    clip = OpenClipboard(NULL);
-    /* FIXME: check error status */
-
-    handle = GetClipboardData(CF_DIB);
-    if (!handle) {
-        /* FIXME: add CF_HDROP support to allow cut-and-paste from
-           the explorer */
-        CloseClipboard();
-        Py_INCREF(Py_None);
-        return Py_None;
+    if (!OpenClipboard(NULL)) {
+        PyErr_SetString(PyExc_OSError, "failed to open clipboard");
+        return NULL;
+    }
+
+    // find best format as set by clipboard owner
+    format = 0;
+    while (!handle && (format = EnumClipboardFormats(format))) {
+        for (UINT i = 0; formats[i] != 0; i++) {
+            if (format == formats[i]) {
+                handle = GetClipboardData(format);
+                format = i;
+                break;
+            }
+        }
+    }
+
+    if (!handle) {
+        CloseClipboard();
+        return Py_BuildValue("zO", NULL, Py_None);
     }
 
-    size = GlobalSize(handle);
     data = GlobalLock(handle);
+    size = GlobalSize(handle);
 
     result = PyBytes_FromStringAndSize(data, size);
 
     GlobalUnlock(handle);
-
     CloseClipboard();
 
-    return result;
+    return Py_BuildValue("zN", format_names[format], result);
 }
 
 /* -------------------------------------------------------------------- */
diff --git a/src/encode.c b/src/encode.c
index 1d463e9c4..03a39448d 100644
--- a/src/encode.c
+++ b/src/encode.c
@@ -761,12 +761,6 @@ PyImaging_LibTiffEncoderNew(PyObject* self, PyObject* args)
             }
         }
 
-        if (PyBytes_Check(value) &&
-                (type == TIFF_BYTE || type == TIFF_UNDEFINED)) {
-            // For backwards compatibility
-            type = TIFF_ASCII;
-        }
-
         if (PyTuple_Check(value)) {
             Py_ssize_t len;
             len = PyTuple_Size(value);
@@ -790,28 +784,24 @@ PyImaging_LibTiffEncoderNew(PyObject* self, PyObject* args)
 
         if (!is_core_tag) {
             // Register field for non core tags.
+            if (type == TIFF_BYTE) {
+                is_var_length = 1;
+            }
             if (ImagingLibTiffMergeFieldInfo(&encoder->state, type, key_int, is_var_length)) {
                 continue;
             }
         }
 
-        if (is_var_length) {
+        if (type == TIFF_BYTE || type == TIFF_UNDEFINED) {
+            status = ImagingLibTiffSetField(&encoder->state,
+                    (ttag_t) key_int,
+                    PyBytes_Size(value), PyBytes_AsString(value));
+        } else if (is_var_length) {
             Py_ssize_t len,i;
             TRACE(("Setting from Tuple: %d \n", key_int));
             len = PyTuple_Size(value);
 
-            if (type == TIFF_BYTE) {
-                UINT8 *av;
-                /* malloc check ok, calloc checks for overflow */
-                av = calloc(len, sizeof(UINT8));
-                if (av) {
-                    for (i=0;i<len;i++) {
-                        av[i] = (UINT8)PyLong_AsLong(PyTuple_GetItem(value,i));
-                    }
-                    status = ImagingLibTiffSetField(&encoder->state, (ttag_t) key_int, len, av);
-                    free(av);
-                }
-            } else if (type == TIFF_SHORT) {
+            if (type == TIFF_SHORT) {
                 UINT16 *av;
                 /* malloc check ok, calloc checks for overflow */
                 av = calloc(len, sizeof(UINT16));
@@ -914,10 +904,6 @@ PyImaging_LibTiffEncoderNew(PyObject* self, PyObject* args)
                 status = ImagingLibTiffSetField(&encoder->state,
                         (ttag_t) key_int,
                         (FLOAT64)PyFloat_AsDouble(value));
-            } else if (type == TIFF_BYTE) {
-                status = ImagingLibTiffSetField(&encoder->state,
-                        (ttag_t) key_int,
-                        (UINT8)PyLong_AsLong(value));
             } else if (type == TIFF_SBYTE) {
                 status = ImagingLibTiffSetField(&encoder->state,
                         (ttag_t) key_int,
diff --git a/src/libImaging/Jpeg.h b/src/libImaging/Jpeg.h
index df6d8a903..280b6d638 100644
--- a/src/libImaging/Jpeg.h
+++ b/src/libImaging/Jpeg.h
@@ -110,7 +110,7 @@ typedef struct {
 
     int extra_offset;
 
-    int rawExifLen;   /* EXIF data length */
+    size_t rawExifLen;   /* EXIF data length */
     char* rawExif;  /* EXIF buffer pointer */
 
 } JPEGENCODERSTATE;
diff --git a/src/libImaging/Jpeg2KEncode.c b/src/libImaging/Jpeg2KEncode.c
index 49ef5e254..5b18e472c 100644
--- a/src/libImaging/Jpeg2KEncode.c
+++ b/src/libImaging/Jpeg2KEncode.c
@@ -50,7 +50,7 @@ static OPJ_SIZE_T
 j2k_write(void *p_buffer, OPJ_SIZE_T p_nb_bytes, void *p_user_data)
 {
     ImagingCodecState state = (ImagingCodecState)p_user_data;
-    int result;
+    unsigned int result;
 
     result = _imaging_write_pyFd(state->fd, p_buffer, p_nb_bytes);
 
@@ -399,8 +399,8 @@ j2k_encode_entry(Imaging im, ImagingCodecState state)
         Py_ssize_t n;
         float *pq;
 
-        if (len) {
-            if (len > sizeof(params.tcp_rates) / sizeof(params.tcp_rates[0])) {
+        if (len > 0) {
+            if ((unsigned)len > sizeof(params.tcp_rates) / sizeof(params.tcp_rates[0])) {
                 len = sizeof(params.tcp_rates)/sizeof(params.tcp_rates[0]);
             }
 
diff --git a/src/libImaging/JpegEncode.c b/src/libImaging/JpegEncode.c
index 8882b61be..b255025fa 100644
--- a/src/libImaging/JpegEncode.c
+++ b/src/libImaging/JpegEncode.c
@@ -222,6 +222,7 @@ ImagingJpegEncode(Imaging im, ImagingCodecState state, UINT8* buf, int bytes)
                 context->cinfo.smoothing_factor = context->smooth;
                 context->cinfo.optimize_coding = (boolean) context->optimize;
                 if (context->xdpi > 0 && context->ydpi > 0) {
+                    context->cinfo.write_JFIF_header = TRUE;
                     context->cinfo.density_unit = 1; /* dots per inch */
                     context->cinfo.X_density = context->xdpi;
                     context->cinfo.Y_density = context->ydpi;
diff --git a/src/libImaging/Paste.c b/src/libImaging/Paste.c
index 6dfff4afb..b89534423 100644
--- a/src/libImaging/Paste.c
+++ b/src/libImaging/Paste.c
@@ -391,9 +391,19 @@ fill_mask_L(Imaging imOut, const UINT8* ink, Imaging imMask,
             UINT8* mask = (UINT8*) imMask->image[y+sy]+sx;
             for (x = 0; x < xsize; x++) {
                 for (i = 0; i < pixelsize; i++) {
-                    *out = BLEND(*mask, *out, ink[i], tmp1);
-                    out++;
+                    UINT8 channel_mask = *mask;
+                    if ((
+                        strcmp(imOut->mode, "RGBa") == 0 ||
+                        strcmp(imOut->mode, "RGBA") == 0 ||
+                        strcmp(imOut->mode, "La") == 0 ||
+                        strcmp(imOut->mode, "LA") == 0 ||
+                        strcmp(imOut->mode, "PA") == 0
+                    ) && i != 3) {
+                        channel_mask = 255 - (255 - channel_mask) * (1 - (255 - out[3]) / 255);
+                    }
+                    out[i] = BLEND(channel_mask, out[i], ink[i], tmp1);
                 }
+                out += pixelsize;
                 mask++;
             }
         }
diff --git a/src/libImaging/QuantOctree.c b/src/libImaging/QuantOctree.c
index fa45ae707..e1205acc3 100644
--- a/src/libImaging/QuantOctree.c
+++ b/src/libImaging/QuantOctree.c
@@ -28,6 +28,7 @@
 #include <string.h>
 #include <limits.h>
 
+#include "ImagingUtils.h"
 #include "QuantOctree.h"
 
 typedef struct _ColorBucket{
@@ -152,10 +153,10 @@ static void
 avg_color_from_color_bucket(const ColorBucket bucket, Pixel *dst) {
    float count = bucket->count;
    if (count != 0) {
-       dst->c.r = (int)(bucket->r / count);
-       dst->c.g = (int)(bucket->g / count);
-       dst->c.b = (int)(bucket->b / count);
-       dst->c.a = (int)(bucket->a / count);
+       dst->c.r = CLIP8((int)(bucket->r / count));
+       dst->c.g = CLIP8((int)(bucket->g / count));
+       dst->c.b = CLIP8((int)(bucket->b / count));
+       dst->c.a = CLIP8((int)(bucket->a / count));
    } else {
        dst->c.r = 0;
        dst->c.g = 0;
diff --git a/src/libImaging/QuantPngQuant.c b/src/libImaging/QuantPngQuant.c
index ef40b282b..7a23ec8c5 100644
--- a/src/libImaging/QuantPngQuant.c
+++ b/src/libImaging/QuantPngQuant.c
@@ -20,8 +20,8 @@
 int
 quantize_pngquant(
     Pixel *pixelData,
-    int width,
-    int height,
+    unsigned int width,
+    unsigned int height,
     uint32_t quantPixels,
     Pixel **palette,
     uint32_t *paletteLength,
@@ -113,4 +113,13 @@ err:
     return result;
 }
 
+const char*
+ImagingImageQuantVersion(void)
+{
+    static char version[20];
+    int number = liq_version();
+    sprintf(version, "%d.%d.%d", number / 10000, (number / 100) % 100, number % 100);
+    return version;
+}
+
 #endif
diff --git a/src/libImaging/QuantPngQuant.h b/src/libImaging/QuantPngQuant.h
index d539a7a0d..fb0b4cc03 100644
--- a/src/libImaging/QuantPngQuant.h
+++ b/src/libImaging/QuantPngQuant.h
@@ -4,8 +4,8 @@
 #include "QuantTypes.h"
 
 int quantize_pngquant(Pixel *,
-    int,
-    int,
+    unsigned int,
+    unsigned int,
     uint32_t,
     Pixel **,
     uint32_t *,
diff --git a/src/libImaging/ZipEncode.c b/src/libImaging/ZipEncode.c
index 0b4435678..84ccb14ea 100644
--- a/src/libImaging/ZipEncode.c
+++ b/src/libImaging/ZipEncode.c
@@ -373,7 +373,7 @@ ImagingZipEncodeCleanup(ImagingCodecState state) {
 const char*
 ImagingZipVersion(void)
 {
-    return ZLIB_VERSION;
+    return zlibVersion();
 }
 
 #endif
diff --git a/winbuild/build_prepare.py b/winbuild/build_prepare.py
index 0ba8a135c..beafda4a4 100644
--- a/winbuild/build_prepare.py
+++ b/winbuild/build_prepare.py
@@ -105,9 +105,9 @@ header = [
 # dependencies, listed in order of compilation
 deps = {
     "libjpeg": {
-        "url": SF_MIRROR + "/project/libjpeg-turbo/2.0.3/libjpeg-turbo-2.0.3.tar.gz",
-        "filename": "libjpeg-turbo-2.0.3.tar.gz",
-        "dir": "libjpeg-turbo-2.0.3",
+        "url": SF_MIRROR + "/project/libjpeg-turbo/2.0.4/libjpeg-turbo-2.0.4.tar.gz",
+        "filename": "libjpeg-turbo-2.0.4.tar.gz",
+        "dir": "libjpeg-turbo-2.0.4",
         "build": [
             cmd_cmake(
                 [
@@ -195,9 +195,9 @@ deps = {
         # "bins": [r"objs\{msbuild_arch}\Release\freetype.dll"],
     },
     "lcms2": {
-        "url": SF_MIRROR + "/project/lcms/lcms/2.10/lcms2-2.10.tar.gz",
-        "filename": "lcms2-2.10.tar.gz",
-        "dir": "lcms2-2.10",
+        "url": SF_MIRROR + "/project/lcms/lcms/2.11/lcms2-2.11.tar.gz",
+        "filename": "lcms2-2.11.tar.gz",
+        "dir": "lcms2-2.11",
         "patch": {
             r"Projects\VC2017\lcms2_static\lcms2_static.vcxproj": {
                 # default is /MD for x86 and /MT for x64, we need /MD always