For reference, pyAPNG works great for creating animated PNGs. If you have a sequence of static PNGs, you can assemble them with APNG.from_files() [1]. Example looping APNG (346K) [2], with alpha channel (456K) [3].

1. https://pypi.org/project/apng/ 2. https://b.thumbs.redditmedia.com/4Q-yKMEPwm2higaB8Wj1pNII60j... 3. https://a.thumbs.redditmedia.com/kSUouIZtNICOcPf4v9F8fPOrpAe...