Looks like google doesn’t introduce a new file ending / format. You’ll never know if you’ve got a normal jpg or that hdr thingy. I wonder why they do that intermediate step to avif.

Maybe because they are not yet ready and confident that avif may replace jpg right now.aybe it’s the first step towards avif.

https://www.notebookcheck.net/New-Google-Ultra-HDR-image-format-demonstrated-as-future-of-photography.758787.0.html