Thread: webp image handling
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Old 08-28-2022, 10:41 AM   #1
Turtle91
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webp image handling
Hi all -
More and more images online are provided in .webp format. Up 'till now I've just been converting them to .jpg (other than it is an 'optimized' format, I haven't researched the benefit of .webp yet).

This morning I added it to an ePub in Sigil. It imported easily and displays fine on the preview pane. However, when I ran the ePubCheck plugin it gave me an error: "A manifest fallback must be provided for image resource 'OEBPS/Images...' of type "image/webp". I have the image listed in the manifest with 'media-type="image/webp" ' (which Sigil did automatically).

Is webp (still?) a candidate format for the ePub spec or has it even been adopted in readers/apps???

Is there something else I need to do to make ePubCheck happy?

Cheers,

edit: ePubCheck also works in Calibre (I think) so this may be tangentially Sigil related.... If it would do better in the ePub forum could someone please move it?
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