How does this skill ensure GIFs work on Slack?

It uses built-in validators and optimization strategies, such as setting specific dimensions (128x128), limiting colors to 48-128, and managing FPS to stay within Slack's performance limits.

What is the recommended size for a Slack emoji GIF?

The skill recommends a dimension of 128x128 pixels and suggests keeping the duration under 3 seconds to ensure optimal rendering and quick loading in Slack.

Can I use existing images to create an animation?

Yes, you can upload images which the skill then processes using PIL to either animate directly or use as a reference for style and color palettes.

Does it support smooth motion like easing?

Absolutely. The skill includes a dedicated easing module with functions like bounce_out, elastic_out, and ease_in_out for professional-grade motion graphics.

Slack GIF Creator

Name: Slack GIF Creator
Author: Daisuke134

byDaisuke134

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Collaboration Tools

Generates and optimizes high-quality animated GIFs and custom emojis specifically tailored for Slack communication.

About

The Slack GIF Creator skill enables developers to programmatically build animated graphics, custom emojis, and message-sized GIFs directly within Claude. It provides a comprehensive framework for creating animations from scratch using PIL primitives or transforming user-uploaded images while adhering to Slack's specific technical constraints. With built-in utilities for easing functions, color optimization, and frame validation, it ensures every GIF is both visually polished and small enough to meet Slack's file size requirements, making it an essential tool for enhancing team collaboration with custom visual assets.

Key Features

3 GitHub stars
Automatic Slack-specific optimization for 128x128 emojis and 480x480 message GIFs
Advanced drawing capabilities including gradients, layered shapes, and custom line widths
Intelligent color reduction and duplicate frame removal to minimize file footprint
Comprehensive animation library featuring easing functions, pulses, bounces, and particle bursts
Validation tools to verify GIF compliance with Slack's duration and file size limits

Use Cases

Designing custom, high-quality animated emojis for unique team reactions
Automating the generation of branded status indicators for Slack workflows
Creating short instructional GIFs to demonstrate UI features or project updates

About

Key Features

3 GitHub stars
Automatic Slack-specific optimization for 128x128 emojis and 480x480 message GIFs
Advanced drawing capabilities including gradients, layered shapes, and custom line widths
Intelligent color reduction and duplicate frame removal to minimize file footprint
Comprehensive animation library featuring easing functions, pulses, bounces, and particle bursts
Validation tools to verify GIF compliance with Slack's duration and file size limits

Use Cases

Designing custom, high-quality animated emojis for unique team reactions
Automating the generation of branded status indicators for Slack workflows
Creating short instructional GIFs to demonstrate UI features or project updates