Does this skill require any external Python libraries?

Yes, it requires Pillow (PIL), imageio, and numpy to handle image processing and GIF assembly.

What are the recommended dimensions for Slack emojis?

For best results, Slack emoji GIFs should be 128x128 pixels. For larger message-based GIFs, 480x480 pixels is the recommended standard.

How does this skill help with Slack's file size limits?

The skill includes optimization strategies such as reducing the color palette to 48 colors, lowering the FPS, removing duplicate frames, and using a specialized emoji-mode to ensure the file remains under Slack's upload limits.

Can I use my own images as a starting point?

Yes. You can upload an image and the skill can use it directly as a base for animation, split it into frames, or use it as a reference for colors and style.

What kind of animation effects are supported?

The skill includes pre-built logic for common animations like shaking, pulsing, bouncing, rotating, fading, and even complex particle bursts, all utilizing smooth easing functions.

Slack GIF Creator

Name: Slack GIF Creator
Author: stevessr

bystevessr

0•

デザインツール

Generates and optimizes high-quality animated GIFs and custom emojis specifically tailored for Slack's technical requirements.

The Slack GIF Creator skill empowers developers to programmatically build, animate, and optimize GIFs directly within their workflow. It provides a comprehensive toolkit for frame-by-frame animation using PIL primitives, easing functions for smooth motion, and built-in validators to ensure compatibility with Slack's file size and dimension constraints. Whether creating custom status emojis or expressive message reactions, this skill handles the complexities of color indexing, frame rate management, and optimization strategies to produce polished, professional-looking animations without needing external design software.

主な機能

01Built-in GIFBuilder for efficient frame assembly and duplicate removal

020 GitHub stars

03Automated optimization for Slack emoji (128x128) and message (480x480) formats

04Support for scratch-built vector graphics and manipulation of user-uploaded images

05Advanced animation library including easing functions for bounce, pulse, and shake effects

06Integrated validation tools to check Slack-readiness and file size constraints

ユースケース

01Designing personalized reaction GIFs using specific brand colors and animation patterns

02Generating automated visual progress indicators or status alerts for team notifications

03Creating custom, high-quality animated emojis for corporate Slack workspaces

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add stevessr/dotsfiles slack-gif-creator

For use in Claude.ai and ChatGPT

Download Skill