Hi Rafal Wiecek,
Our Easy Image Optimizer CDN service already supports AVIF! However, unless something big changes, I don’t see much happening for local AVIF support. AVIF takes an inordinate amount of resources for what can be minimal gains over WebP. That having been said, if you’d like to see something specific done with it, I recommend adding your suggestion to our feedback form: https://feedback.ewww.io/
