Aldo, note that while Edge has initial support as well, it’s behind a command-like attribute rather than a flag. Not sure why they didn’t just do it like Chromium but I have a suspicion they might want to remove it later and replace it with a JPEG XL image extension like they’ve done recently for AVIF etc. The reason is that this then benefits the entire system.

But regardless. All main browsers but Safari will get it. The jury’s still out on Safari/WebKit.

Here is something you can do to enable jxl in Edge without having to pass the command line option: https://gist.github.com/ziemek99/6295222469218427bb160cf849c...

The Firefox flag is "image.jxl.enabled" and the Chrome flag is "enable-jxl", in case anyone else was searching for jpegxl or something instead.

You don't really need to alter the flags directly if you are on Firefox nightly. Firefox nightly already has a dedicated page for recent experiments in setting page. JPEG XL is already on it for a few months.

That's cool. I've been running Nightly for a while but I haven't been keeping up on new things in that tab.