Pretty much everything supports it now, and in case you haven't noticed pretty much all the images on Lemmy are webp because it lets instances save tons and tons on bandwidth and storage.
The next "better but not yet supported" image format is .avif.
Not the end of the world, but out of the few apps that don't fit in the 'pretty much everything' group, messenger is one of them and I can't share a good bunch of memes on Lemmy with my friends because of that. I usually end up screenshotting my own screen because of that.
Every time I have to fire up my Fb account, I'm stunned at how shit React is. It's appalling how bad that framework has become. Maybe if they cared about implementing solid code and less about raping your life of metadata in order to sell you the worst products on the planet thru their "partners" things would be better.
What doesn’t support avif? Even Apple devices support it and they are usually the last to adopt anything. I’ve crushed all my website using it and it turns a 1MB image to 80KB without quality loss, absolutely amazing compression!
In websites it works great, there isn't a browser around that can't deal with it. Same how with when webp was new you'd run into it all over the web because there they were just better and worked fine.
It's everything else that isn't ready yet. My older android device can't deal with them in apps, no AV1 decoder maybe? Dunno.
Not many processors have AV1 hardware decoders yet (Apple thru them in on their M3's last year and latest iPhone 15 Pros) so I can't see it being that. There's also software decoding that works fine. My wallpaper on macOS has been avif since last year (Sonoma) and works without issue. I don't think it works in Windows 10 tho. No issues with the latest Ubuntu and I'm not familiar at all with Android OS.
In any case, I think it's the best thing to come out in a long time. My website with raw PNGs was about 120MB. I crushed those PNGs with noticeable quality loss down to 50MB. I then crushed the original 120MB down to 60MB with minimal to no visual quality loss using webp. But I got it down to 25MB without loss using avif at 85% compression. Just insane performance, couldn't be more impressed!
Now we just need a Brennan Lee Mulligan flavored fully charged rant about the billionaire class of corporatists forcing webp with its patent encumbrance on us all.
I actually decided to use avif on my project. But both this and webp is as fast as I know, not supported in any default image viewer on windows. Which is rater annoying, but I moved on to better programs for tgat anyways.
Avif is second to jxl though, some of the downsides of being a video format is that you loose progressive loading (only top to bottom iirc), degrades on re-encodes, and some other things I can't think of. Avif gets a win because if you have a av1 decoder you already have a avif decoder too! But since it is a video frame essential there are some downsides since some image specific features can't or won't be added.
Okay can someone please explain why Facebook Messenger on my phone keeps saying it can't support gifs? Yes yes I'm an old man, but on the other hand what the fuck, fucking gifs? Are they devolving faster than Google?
(Also like, the gif feature built into Facebook Messenger itself. The longer I think about this problem, the more I think the app is just throwing the wrong error)