SKILL.md
Image Optimization
Table of Contents
- [Overview](#overview)
- [When to Use](#when-to-use)
- [Quick Start](#quick-start)
- [Reference Guides](#reference-guides)
- [Best Practices](#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 &#x26; Formats
Image Compression & Formats
Responsive Images
Optimization Process
Monitoring &#x26; 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