Setup & Installation
npx skills add https://github.com/anthropics/skills --skill slack-gif-creator
https://github.com/anthropics/skills/tree/main/skills/slack-gif-creator
View on GitHubWhat This Skill Does
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.
When to use it
- Making a custom bouncing logo emoji for a Slack workspace
- Generating a pulsing status indicator GIF for a team standup bot
- Turning a user-uploaded image into a spinning or shaking Slack reaction
- Building a particle burst animation to celebrate a deployment in Slack
- Producing a slide-in text GIF that fits under Slack's file size limits