[ruxkor]

Very nice! However, in its current implementation, the service does not seem to optimize the created gifs at all, i.e. all frames are opaque and do not try to reuse existing pixels in the last frame(s).

This can be easily changed by using the integrated disposal methods in a gif, as shown on http://docstore.mik.ua/orelly/web2/wdesign/ch23_05.htm , but afaik ffmpeg does not support this out of the box.

It seems imagemagick is able to do some basic optimization, as shown on http://www.imagemagick.org/Usage/anim_opt .