You get the exact same quality at around ~25% smaller than other image formats. Unfortunate that it’s not supported by everything, but yeah it’s a better image format practically in that sense.
On the web this saves money when storing at a large scale, and it can have a significant impact on page speed when loading websites on slower connections.
Webp
Developed by google, for google products.
Not guaranteed to work with google products (looking at you google voice.)
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.
Not better than jpegXL which has clearer free licensing.
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.
Firefox supports JXL just fine and chrome did support it, but pulled support shortly after.
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”).