Performance Optimization Skill

🔴 AI FIRST Quality Principle

Apply the AI FIRST principle: never accept first-pass quality. Minimum 2 iterations. Read all output, improve every section. No shortcuts.

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