I did some reading recently, for a benchmark I was setting up, to try and understand what the situation is. It seems things have started changing in the last year or so.

Some links from my notes:

https://www.phoronix.com/news/Mozilla-Interest-JPEG-XL-Rust

https://news.ycombinator.com/item?id=41443336 (discussion of the same GitHub comment as in the Phoronix site)

https://github.com/tirr-c/jxl-oxide

https://bugzilla.mozilla.org/show_bug.cgi?id=1986393 (land initial jpegxl rust code pref disabled)

In case anyone is curious, here is the benchmark I did my reading for:

https://op111.net/posts/2025/10/png-and-modern-formats-lossl...