pillow breaking changes

13.0.0

51 breaking changes, first published October 16, 2026.

• Removed
  Python 3.10 is no longer supported. Users on Python 3.10 must upgrade their Python version. github.com
• Removed
  Previously deprecated features scheduled for removal in 13.0.0 were removed. Code relying on them will break. github.com
• Removed GifImagePlugin._save_netpbm
  GifImagePlugin._save_netpbm was removed. Code that calls it directly will fail and should stop using it. github.com
• Removed PIL.ExifTags.IFD.Makernote
  ExifTags.IFD.Makernote was removed. Code that references it will fail. pypi.org
• Removed PIL.FliImagePlugin.o8
  PIL.FliImagePlugin.o8 was removed in pillow 13.0.0 pypi.org
• Removed PIL.GifImagePlugin.ImageMath
  PIL.GifImagePlugin.ImageMath was removed in pillow 13.0.0 pypi.org
• Removed PIL.GifImagePlugin.ImageOps
  PIL.GifImagePlugin.ImageOps was removed in pillow 13.0.0 pypi.org
• Removed PIL.Image.Image.get_child_images
  PIL.Image.Image.get_child_images was removed in pillow 13.0.0 pypi.org
• Removed PIL.Image.logger
  PIL.Image.logger was removed in pillow 13.0.0 pypi.org
• Removed PIL.Image.SupportsArrayInterface.__len__
  PIL.Image.SupportsArrayInterface.__len__ was removed in pillow 13.0.0 pypi.org

And 41 more in this version.

12.3.0

39 breaking changes, first published July 1, 2026.

• Removed
  Pillow no longer ships experimental free-threaded wheels for Python 3.13. github.com
• Removed
  Wheels are no longer built for manylinux2014 or Amazon Linux 2 platforms. github.com
• Removed ImageCms
  Non-image modes are no longer accepted by ImageCms. Code that relied on them must use image modes instead. github.com
• Removed PIL.ImageText.Font
  PIL.ImageText.Font was removed in pillow 12.3.0 pypi.org
• Behavior changed ImageDraw.line
  Drawing a line or arc with width zero now draws nothing. github.com
• Behavior changed ImageMath.unsafe_eval
  Expressions evaluated by ImageMath.unsafe_eval no longer receive the globals previously set for eval(). github.com
• Behavior changed ImageOps.expand
  An unsupported border format now raises ValueError instead of being accepted. github.com
• Default changed ImageGrab.grab
  Screenshots from macOS retina displays keep their full size unless resizing is requested. github.com
• Signature changed PIL.BlpImagePlugin.BLP1Decoder.decode
  Was def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]; now def decode(self, buffer: Image.DecoderInput) -> tuple[int, int]. pypi.org
• Signature changed PIL.BlpImagePlugin.BLP1Decoder.set_as_raw
  Was def set_as_raw(self, data: bytes, rawmode: str | None = None, extra: tuple[Any, ...] = ()) -> None; now def set_as_raw(self, data: bytes | bytearray, rawmode: str | None = None, extra: tuple[Any, ...] = ()) -> None. pypi.org

And 29 more in this version.

Check your code

These are the changes. To see which of them reach your code, scan a public repository, or have your coding agent call check_code with your manifest or lockfile over MCP. The API reads every change in every version, not only the newest. On Team and up, a fix pull request opens for the changes that reach a connected repository. Nothing merges or deploys.