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Allow RGBA palettes to work with ImageOps.expand() #9138

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Merged
merged 1 commit into from
Oct 10, 2025
Merged

Allow RGBA palettes to work with ImageOps.expand() #9138

merged 1 commit into from
Oct 10, 2025
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radarhere
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Resolves #9136

Currently, ImageOps.expand() doesn't consider palette modes.

Pillow/src/PIL/ImageOps.py

Line 502 in 1e76b75

palette = ImagePalette.ImagePalette(palette=image.getpalette())

This fixes that.

@radarhere radarhere mentioned this pull request Aug 6, 2025
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@hugovk hugovk merged commit 8c42abd into python-pillow:main Oct 10, 2025
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@radarhere radarhere deleted the expand branch October 10, 2025 09:50
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Successfully merging this pull request may close these issues.

ImageOps.expand removes the alpha channel of palettes
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@radarhere @hugovk