slack-gif-creator

Creates animated GIFs sized and optimized for Slack, either as emoji (128x128) or message attachments (480x480). Uses PIL to draw frames from scratch or from uploaded images, with utilities for easing, validation, and file size control. Slack's GIF requirements are specific enough (file size, color palette, dimension constraints) that doing this by hand in a general image editor usually means several failed upload attempts before getting it right.