Add support for WEBP images generated with ComfyUI#798
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Thanks for the PR! Really appreciate your contribution.
Unfortunately, I don't have an example workflow handy for this one — it was actually contributed by another dev. |
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The current implementation doesn't read prompt/workflow metadata from WEBP images generated by ComfyUI, resulting in blank fields. This is because the code only checks PNG-specific metadata chunks. This PR adds logic to parse ComfyUI’s Workflow and Prompt data from WEBP EXIF tags. I believe this is crucial because WEBPs, along with PNG and FLAC files, are the only files that ComfyUI can auto-load workflows from, so they are clearly an important ComfyUI format.
Validation:
WEBP image generated by ComfyUI's native SaveAnimatedWEBP node (despite its name, it is the only native way to save static WEBP images): https://raw.githubusercontent.com/Ancions-dot/sd-webui-infinite-image-browsing/refs/heads/fix_comfyui_webp/ComfyUI_00001_.webp
WEBP image generated by custom Save Image node from https://github.com/WASasquatch/was-node-suite-comfyui: https://raw.githubusercontent.com/Ancions-dot/sd-webui-infinite-image-browsing/refs/heads/fix_comfyui_webp/ComfyUI_was_0001.webp
Limitation:
is_img_created_by_comfyui_with_webui_gen_infoalways returns False for WEBPs sinceimg.info.get("parameters")always fails for WEBP images. But since I have no idea what is meant by that or how to generate an image with WebUI gen info, I couldn't test this yet. Do you maybe have an example workflow?