performance-optimization
Performance Optimization Skill
Purpose
Expert knowledge in optimizing web performance focusing on Core Web Vitals, bundle size reduction, and efficient caching strategies.
Core Principles
- Measure First - Use Lighthouse/PageSpeed Insights
- Core Web Vitals - LCP < 2.5s, FID < 100ms, CLS < 0.1
- Progressive Enhancement - Core functionality works everywhere
- Lazy Loading - Load content as needed
- Caching Strategy - Maximize cache hits
Enforces
- Core Web Vitals targets:
- LCP (Largest Contentful Paint) < 2.5s
- FID (First Input Delay) < 100ms
- CLS (Cumulative Layout Shift) < 0.1
- Bundle size optimization (< 100KB initial)
- Image optimization (WebP, lazy loading)
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