slack-gif-creator

name	slack-gif-creator
description	Knowledge and utilities for creating animated GIFs optimized for Slack. Provides constraints, validation tools, and animation concepts. Use when users request animated GIFs for Slack.
version	1.0.0
author	Anthropic
license	Apache 2.0
triggers	["Slack GIF","animated GIF","Slack emoji","animation","PIL","Pillow"]
tools	["file_read","file_write","shell"]
models	["qwen3-coder","qwen3-32b"]

Slack GIF Creator

Slack Requirements

• Emoji GIFs: 128x128
• Message GIFs: 480x480
• FPS: 10-30
• Colors: 48-128
• Duration: Under 3 seconds for emoji

Core Workflow

from PIL import Image, ImageDraw

frames = []
for i in range(12):
    frame = Image.new('RGB', (128, 128), (240, 248, 255))
    draw = ImageDraw.Draw(frame)
    
    # Draw animation using PIL primitives
    draw.ellipse([x1, y1, x2, y2], fill=(r, g, b))
    
    frames.append(frame)

# Save as GIF
frames[0].save('output.gif', save_all=True, 
               append_images=frames[1:], 
               loop=0, duration=100, optimize=True)

Animation Concepts

• Shake/Vibrate: Offset with oscillation
• Pulse: Scale rhythmically with sine
• Bounce: Apply gravity to y velocity
• Spin: Rotate around center
• Fade: Adjust alpha channel

Important Notes

Missing Modules: The core/ module (gif_builder.py, validators.py, etc.) is not included. Use PIL directly as shown above.

Qwen Code Integration

Use /skills slack-gif-creator to invoke.