Can I use this skill to create standard message GIFs?

Yes, the toolkit supports message GIFs with a 2MB limit and optimal dimensions of 480x480, providing higher frame rates and color counts than emoji mode.

What is the file size limit for Slack emojis?

Slack has a strict 64KB limit for custom emoji GIFs. This skill includes built-in validators and optimization strategies to help your creations stay under this limit.

How do I ensure my GIF is ready for upload?

The skill includes a 'is_slack_ready' function that runs comprehensive checks on dimensions and file size to confirm compatibility before you attempt to upload to Slack.

What animation effects are included?

The library features a wide range of primitives including shake, bounce, spin, pulse, fade, zoom, explode, wiggle, slide, flip, morph, and kaleidoscope effects.

Does it handle text rendering for small sizes?

Yes, it includes helper utilities for rendering text with outlines, which significantly improves readability at the small scales required for Slack emojis.

Slack GIF Creator

Name: Slack GIF Creator
Author: lifangda

bylifangda

•

Collaboration Tools

Generates and optimizes animated GIFs and custom emojis specifically tailored for Slack's strict file size and dimension constraints.

The Slack GIF Creator is a specialized toolkit designed to help developers and users create high-impact animated visuals that adhere to Slack's unique technical requirements. It provides a robust suite of composable animation primitives—ranging from simple bounces to complex kaleidoscope effects—alongside strict validation tools to ensure content meets the challenging 64KB limit for custom emojis or the 2MB limit for message GIFs. Whether you need a simple reaction emoji or a complex brand animation, this skill automates the frame generation, color quantization, and optimization processes needed for seamless Slack integration.

Key Features

01Slack-specific validation for message and emoji file size constraints

0216 GitHub stars

03Composable animation primitives including shake, bounce, pulse, and explode

04Dynamic text rendering with outlines for high readability at small scales

05Advanced optimization engine for aggressive color quantization and frame management

06Automated particle systems and visual effects like shockwaves and flashes

Use Cases

01Generating instructional or celebratory message GIFs for team announcements

02Rapidly prototyping brand-specific animated assets using predefined motion primitives

03Creating custom animated reaction emojis that stay under the strict 64KB upload limit

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add lifangda/claude-plugins slack-gif-creator

For use in Claude.ai and ChatGPT

Download Skill