Is text rendering supported for small emoji animations?

Yes, the toolkit includes specific helper utilities to render text with outlines, which significantly improves readability at the small 128x128 resolution used by Slack emojis.

How does it handle Slack's strict 64KB emoji limit?

The toolkit uses a specialized GIFBuilder that applies aggressive color quantization (reducing palettes to 32-48 colors) and frame removal to ensure animations meet the 64KB threshold.

Can I combine multiple animation effects like bounce and spin?

Yes, the animation primitives are designed to be composable building blocks. You can apply multiple motion functions to a single object within the same frame sequence.

Does this skill require external image editing software?

No, the skill operates entirely through Python-based drawing and animation libraries within the Claude Code environment, handling everything from rendering to final compression.

What are the recommended settings for a standard Slack message GIF?

For message GIFs, the skill recommends a 480x480 resolution, a 2MB size limit, and a frame rate of 15-20 FPS to maintain smooth motion without exceeding upload caps.

Slack GIF & Emoji Creator

Name: Slack GIF & Emoji Creator
Author: prof-ramos

byprof-ramos

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设计工具

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

Slack GIF Creator is a specialized toolkit designed to streamline the creation of animated assets for Slack workspace communication. It addresses the platform's challenging technical requirements—most notably the strict 64KB limit for custom emojis—by providing built-in validators and aggressive optimization algorithms. The skill features a rich library of composable animation primitives such as shakes, bounces, and morphs, allowing users to transform simple descriptions into complex animations. Whether you are creating a 480x480 message GIF or a perfectly compressed 128x128 reaction emoji, this tool ensures your creations are upload-ready without the need for external design software.

主要功能

01Library of composable animation primitives including Shake, Bounce, Spin, and Zoom

02Advanced visual effects like Kaleidoscope, Particle systems, and Morphing

03Automatic Slack size and dimension validation for messages and emojis

04Aggressive 64KB optimization specifically for Slack's custom emoji limits

05Readability-focused text rendering with customizable outlines for small-scale assets

061 GitHub stars

使用场景

01Generating custom animated team emojis from text-based descriptions

02Automating the color quantization and frame-reduction of complex animations

03Creating optimized reaction GIFs that fit within Slack's 2MB message limit

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add prof-ramos/.codex slack-gif-creator

For use in Claude.ai and ChatGPT

Download Skill