In late March, support for Animated PNGs (APNGs) landed on the Mozilla trunk. The web can finally ditch GIF-format animations, as the APNG format offers a superior feature set… Most notably, full 24-bit color and alpha transparency. I was eager to try this out, but there were no editors to build such animations. What to do? Well, I built one. Here’s the first result:
[You'll only see an animated logo if you're running a recent trunk build.]
The editor is mostly complete, and I’ll release it as a browser extension once the patch for APNG image encoding support lands (bug 372741). Mozilla is a nifty platform for developing this kind of tool, as I get cross-platform support essentially for free.
Thanks to Grey Hodge for the layered source images.