It’s surprisingly easy to enable WebP support in Ubuntu 22.04 LTS, letting you see image thumbnails in the file manager and open WebP images in the default image viewer.
How to Add WebP Support to Ubuntu 22.04 LTSIt’s made possible but the wonderful open source webp-pixbuf-loader library. You install it, restart any/all apps that can use it, and bam: WebP images appear right in front your window peepers (aka your eyes – I could’ve just said eyes).
sudo add-apt-repository ppa:helkaluin/webp-pixbuf-loader
sudo apt install webp-pixbuf-loader