You'll find them everywhere — on websites, in apps, tucked away in game files, and more — although some sites automatically convert them to WEBP, which has become quite common these days.

Based on the benchmarks from 2012 by [Blobfolio] between JPEG XL, AVIF and WebP, it would seem that if Jpegli incorporates advancements from AVIF while maintaining compatibility with JPEG decoders ...