Performance Optimization Skill

Purpose

Expert knowledge in optimizing web performance focusing on Core Web Vitals, bundle size reduction, and efficient caching strategies.

Core Principles

1. Measure First - Use Lighthouse/PageSpeed Insights
2. Core Web Vitals - LCP < 2.5s, FID < 100ms, CLS < 0.1
3. Progressive Enhancement - Core functionality works everywhere
4. Lazy Loading - Load content as needed
5. Caching Strategy - Maximize cache hits