In our current EPUB 3.x charter, WebP is clearly identified as a candidate for our list of core formats.
Now that Apple has released iOS 14, WebP support is finally available on all major modern browsers: https://caniuse.com/webp
WebP has many benefits over JPEG and PNG and while AVIF might eventually become a better option, it's probably a few years away from being widely adopted.
In our current EPUB 3.x charter, WebP is clearly identified as a candidate for our list of core formats.
Now that Apple has released iOS 14, WebP support is finally available on all major modern browsers: https://caniuse.com/webp
WebP has many benefits over JPEG and PNG and while AVIF might eventually become a better option, it's probably a few years away from being widely adopted.