This gist contains a no-mangling repro for github.com/deepteams/webp v1.2.2.
GitHub issue image uploads can transform image files, so the repro image and generated WebP are attached as base64 text files. Decode them with:
base64 -d builder-clipboard-2296733280.png.base64 > builder-clipboard-2296733280.png
base64 -d session-view-image-output.webp.base64 > session-view-image-output.webpFiles:
builder-clipboard-2296733280.png.base64: exact source PNG from Builder issue #308.session-view-image-output.webp.base64: exact generated WebP persisted by Builder.repro.go: minimal reproduction usingwebp.OptionsForPreset(webp.PresetPicture, 80).checksums.txt: SHA-256 and observed decoder output.