Pillow Files

https://pillow.readthedocs.io/en/stable/releasenotes/11.3.0.html

Deprecations

• Deprecate fromarray mode argument [#9018] [@radarhere]
• Deprecate saving I mode images as PNG [#9023] [@radarhere]

Documentation

• Added release notes for [#9041] [#9042] [@radarhere]
• Add release notes for [#8912] and [#8969] [#9019] [@radarhere]
• ImageFont does not handle multiline text [#9000] [@radarhere]
• Updated Ubuntu CI targets [#8988] [@radarhere]
• Update MinGW package names [#8987] [@H4M5TER]
• Updated docstring [#8943] [@radarhere]
• Mention that tobytes() with the raw encoder uses Pack.c [#8878] [@radarhere]
• Refactor docs Makefile [#8933] [@hugovk]
• Add template for quarterly release issue [#8932] [@aclark4life]
• Add list of third party plugins [#8910] [@radarhere]
• Update redirected URL [#8919] [@radarhere]
• Docs: use sentence case for headers [#8914] [@hugovk]
• Docs: remove unused Makefile targets [#8917] [@hugovk]
• Remove indentation from lists [#8915] [@radarhere]
• Python 3.13 is tested on Arch [#8894] [@radarhere]
• Move XV Thumbnails to read only section [#8893] [@aclark4life]
• Updated macOS tested Pillow versions [#8890] [@radarhere]

Dependencies

• Add AVIF to wheels using only aomenc and dav1d AVIF codecs for reduced size [#8858] [@fdintino]
• Use same AVIF URL when fetching dependency [#8871] [@radarhere]
• Update dependency mypy to v1.16.1 [#9026] [@renovate[bot]]
• Update libpng to 1.6.49 [#9014] [@radarhere]
• Update dependency cibuildwheel to v3 [#9010] [@renovate[bot]]
• Updated libjpeg-turbo to 3.1.1 [#9009] [@radarhere]
• Update dependency mypy to v1.16.0 [#8991] [@renovate[bot]]
• Updated libpng to 1.6.48 [#8940] [@radarhere]
• Updated Ghostscript to 10.5.1 [#8939] [@radarhere]
• Updated harfbuzz to 11.2.1 [#8937] [@radarhere]
• Updated libavif to 1.3.0 [#8949] [@radarhere]
• Update dependency cibuildwheel to v2.23.3 [#8931] [@renovate[bot]]
• Updated harfbuzz to 11.1.0 [#8904] [@radarhere]

Testing

• Add match parameter to pytest.warns() [#9038] [@hugovk]
• Increase pytest verbosity [#9040] [@radarhere]
• Improve SgiImagePlugin test coverage [#8896] [@radarhere]
• Update ruff pre-commit ID [#8994] [@radarhere]
• Only check DHT marker for libjpeg-turbo [#9025] [@radarhere]
• Improve BLP tests [#9020] [@radarhere]
• Fix warning [#9016] [@radarhere]
• Test Python 3.14t on macOS and Linux [#9011] [@radarhere]
• Only accept missing tkinter when building wheels on Windows [#8981] [@radarhere]
• Fix test [#8996] [@radarhere]
• Stop testing deprecated Windows Server 2019 runner image [#8989] [@radarhere]
• Run slow tests on valgrind, but without timeout [#8975] [@radarhere]
• Close file pointer earlier [#8895] [@radarhere]
• Added Fedora 42 [#8899] [@radarhere]
• Removed Fedora 40 [#8887] [@radarhere]

Type hints

• Assert palette is not None [#8877] [@radarhere]
• Do not import type checking [#8854] [@radarhere]
• Improve type hints [#8883] [@radarhere]
• Update dependency mypy to v1.16.0 [#8991] [@renovate[bot]]

Other changes

• Updated check script paths [#9052] [@radarhere]
• Raise FileNotFoundError when opening an empty path [#9048] [@radarhere]
• Handle IPTC TIFF tags with incorrect type [#8925] [@radarhere]
• Do not update palette for L mode GIF frame [#8924] [@radarhere]
• Use save parameters as encoderinfo defaults [#9001] [@radarhere]
• Add support for iOS [#9030] [@freakboy3742]
• Fix qtables and quality scaling [#8879] [@Kyliroco]
• Read 16-bit McIdas images into I;16B mode to allow for memory mapping [#9046] [@radarhere]
• Support ttb multiline text [#8730] [@radarhere]
• Use unpacking [#9044] [@radarhere]
• Fix saving MPO with more than one appended image [#8979] [@radarhere]
• Restore original encoderinfo after saving [#8942] [@radarhere]
• Return PixelAccess from first load of ICO and IPTC images [#8922] [@radarhere]
• Improve justifying text [#8905] [@radarhere]
• Set color table fourth channel to zero for 1 and L mode when saving BMP [#8889] [@radarhere]
• Improve reading XPM images [#8874] [@radarhere]
• Fix buffer overflow when saving compressed DDS images [#9041] [@radarhere]
• Use PEP 489 multi-phase initialization [#8983] [@radarhere]
• Support saving I;16L TIFF images [#9015] [@radarhere]
• Do not call sys.executable in ImageShow in PyInstaller application [#9028] [@radarhere]
• Search for libtiff library file first on Windows and macOS [#9034] [@radarhere]
• Fix libtiff cleanup [#9002] [@radarhere]
• Use percent formatting for _dbg calls [#9035] [@radarhere]
• Removed ImageCmsProfile._set method [#9032] [@radarhere]
• Added Python 3.14 macOS x86-64 wheels [#9031] [@radarhere]
• Support writing QOI images [#9007] [@thisismypassport]
• Simplify C error handling [#9021] [@radarhere]
• Add Python 3.14 beta wheels [#9012] [@hugovk]
• Remove padding between interleaved PCX palette data [#9005] [@radarhere]
• Start QOI decoding with a zero-initialized array of previously seen pixels [#9008] [@radarhere]
• Correct drawing I;16 horizontal lines [#8985] [@radarhere]
• Reduce number of bytes read for PCX header [#9004] [@radarhere]
• Handle XMP data from an UNDEFINED TIFF tag [#8997] [@radarhere]
• Do not decode bytes in PPM error message [#8958] [@radarhere]
• Parse XMP tag bytes without decoding to string [#8960] [@radarhere]
• Clear TIFF core image if memory mapping was used for last load [#8962] [@radarhere]
• Use mask in C when drawing wide polygon lines [#8984] [@radarhere]
• Simplify code [#8863] [@radarhere]
• Call startswith once with a tuple [#8998] [@radarhere]
• [pre-commit.ci] pre-commit autoupdate [#8993] [@pre-commit-ci[bot]]
• Use ImageFile.MAXBLOCK in tobytes() [#8906] [@radarhere]
• Removed unreachable code [#8918] [@radarhere]
• Valgrind Memory Leak Checking [#8954] [@wiredfool]
• Add parallel test target, using pytest-xdist [#8972] [@wiredfool]
• Add support for flat uint8 arrow arrays for multi channel images [#8908] [@wiredfool]
• Removed CMAKE_POLICY_VERSION_MINIMUM=3.5 for libavif [#8973] [@radarhere]
• Reduced number of bytes read in WMF header [#8964] [@radarhere]
• Do not build against libavif < 1 [#8969] [@radarhere]
• Improved support for Python 3.14 [#8948] [@radarhere]
• [pre-commit.ci] pre-commit autoupdate [#8944] [@pre-commit-ci[bot]]
• Allow loading ImageFile state from Pillow < 11.2.1 [#8938] [@radarhere]
• Remove outdated comment [#8929] [@radarhere]
• Add support for Grim in Wayland sessions ImageGrab [#8912] [@AdianKozlica]
• Add make [-C docs] htmllive to rebuild and reload HTML files [#8913] [@hugovk]
• Build Windows arm64 wheels on arm64 runner [#8898] [@radarhere]