WebP is natively supported in Google Chrome, Firefox, Edge, the Opera browser, and by many other tools and software libraries. Developers have also added support to a variety of image editing tools.
See: https://developers.google.com/speed/webp#webp_support
Note The comic-book viewer already support this image type.
Fixes for: Webp support https://github.com/lbryio/lbry-desktop/issues/4146