"nonlossy pixel-perfect animations "

That sounds way less awesome, when you consider it only had 256 colors, so allmost all content did indeed loose a lot, by converting to gif.

And this is actually the first time I have heard of apng and interesting that it is even now widely avaiable. But I do not really see a broad use case, compared to webm.

Because file size matters usually much more, than pixel perfect animation.

I wanted to convert a short screencast to a gif, result: hundreds of megabyte big monster, with crappy quality.

The same with webm: 2 MB and good enough quality.