Agent skill
image-optimization
Optimize images for web to reduce file size without sacrificing quality. Use compression, modern formats, and responsive techniques for faster loading.
Install this agent skill to your Project
npx add-skill https://github.com/aj-geddes/useful-ai-prompts/tree/main/skills/image-optimization
SKILL.md
Image Optimization
Table of Contents
- Overview
- When to Use
- Quick Start
- Reference Guides
- Best Practices
Overview
Images typically comprise 50% of page weight. Optimization dramatically improves performance, especially on mobile networks.
When to Use
- Website optimization
- Responsive image implementation
- Performance improvement
- Mobile experience enhancement
- Before deployment
Quick Start
Minimal working example:
Format Selection:
JPEG:
Best for: Photographs, complex images
Compression: Lossy (quality 70-85)
Size: ~50-70% reduction
Tools: ImageMagick, TinyJPEG
Command: convert image.jpg -quality 75 optimized.jpg
PNG:
Best for: Icons, screenshots, transparent images
Compression: Lossless
Size: 10-30% reduction
Tools: PNGQuant, OptiPNG
Command: optipng -o3 image.png
WebP:
Best for: Modern browsers (90% support)
Compression: 25-35% better than JPEG/PNG
Fallback: Use <picture> element
Tools: cwebp
Command: cwebp -q 75 image.jpg -o image.webp
SVG:
Best for: Icons, logos, simple graphics
// ... (see reference guides for full implementation)
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| Image Compression & Formats | Image Compression & Formats |
| Responsive Images | Responsive Images |
| Optimization Process | Optimization Process |
| Monitoring & Best Practices | Monitoring & Best Practices |
Best Practices
✅ DO
- Follow established patterns and conventions
- Write clean, maintainable code
- Add appropriate documentation
- Test thoroughly before deploying
❌ DON'T
- Skip testing or validation
- Ignore error handling
- Hard-code configuration values
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