This is the source I used to originally validate my position: https://caniuse.com/jpegxl

Let me know if it’s incorrect, I’d be very interested to learn of new options for the web space as a developer. This said, I googled Firefox and it came back with only “experimental support” for what I think may be an alpha release (version number ends in “a”).

Only Apple supports this. Like, literally just Apple. I hate Chrome, and even Chrome doesn’t support this. Firefox? Yeah, zero support.

So for these reasons it’s 100% not viable right now. If you get the support, I’ll consider it for my websites, and tell my colleagues about it, though.

People just really need to support it. It’s far better than jpg or png. It’s the go-to for web right now, that’s for sure.