I'll create an issue to support exporting the animation in v1.
Any particular reason for APNG vs GIF?
The animation in the README.md was captured with the MediaRecorder API.
It produced a webm that I "cropped -> clipped -> to gif" manually.
I am not that far to produce a looping webm that is perfectly cropped & clipped.
I may release that first, and then tackle gif / apng / ??? later.
GIFs support only 256 colors while APNG supports millions of colors and does have multi-browser support now. PNGs are also inherently high quality and don't pixelate like lossy image formats - GIF, JPG etc.
Feature request - ability to export to Animated PNG!