Is text readability supported for small emoji sizes?

Yes, the toolkit includes a typography helper that adds high-contrast outlines to text, ensuring that words remain legible even at the 128x128 resolution used for Slack emojis.

Can I combine multiple animation effects like bounce and shake?

Yes, the animation primitives are designed to be composable. You can apply multiple motion functions to the same object or sequence them to create complex, multi-stage animations.

How does this skill handle Slack's 64KB emoji limit?

The skill uses an aggressive GIF builder that automatically limits color palettes (32-48 colors) and frame counts (10-15 frames) while validating the final file size to ensure it passes Slack's strict requirements.

Do I need external design software to use this skill?

No, this skill is entirely programmatic. You can generate complex animations, apply filters, and optimize the final output using Python-based commands directly within Claude Code.

Slack GIF Creator & Optimizer

Name: Slack GIF Creator & Optimizer
Author: Justdvp

byJustdvp

•

デザインツール

Generates and optimizes animated GIFs and custom emojis for Slack using programmatic motion primitives and file-size validators.

概要

The Slack GIF Creator is a specialized toolkit for Claude Code designed to build custom animations that strictly adhere to Slack's technical requirements. It provides a library of composable motion primitives—including shakes, bounces, and kaleidoscope effects—while incorporating built-in validators to manage Slack's 2MB message limit and the rigorous 64KB emoji threshold. This skill enables developers to programmatically generate branded reactions, expressive emojis, and high-quality channel assets directly from the command line, ensuring every creation is ready for immediate upload.

主な機能

Advanced visual effects including particle systems and kaleidoscope filters
Automatic color quantization and aggressive frame optimization for small files
5 GitHub stars
Strict validators for Slack's 2MB message and 64KB emoji size limits
Library of 12+ composable animation primitives like Shake, Pulse, and Morph
Specialized typography tools with outlines for high readability on small canvases

ユースケース

Creating custom animated Slack emojis that meet the strict 64KB size limit
Generating team-branded motion graphics for automated channel announcements
Designing programmatic GIF reactions from text descriptions for developer workflows

概要

主な機能

Advanced visual effects including particle systems and kaleidoscope filters
Automatic color quantization and aggressive frame optimization for small files
5 GitHub stars
Strict validators for Slack's 2MB message and 64KB emoji size limits
Library of 12+ composable animation primitives like Shake, Pulse, and Morph
Specialized typography tools with outlines for high readability on small canvases

ユースケース

Creating custom animated Slack emojis that meet the strict 64KB size limit
Generating team-branded motion graphics for automated channel announcements
Designing programmatic GIF reactions from text descriptions for developer workflows