Web Performance Audit

Structured 5-phase web performance audit workflow. Diagnose performance bottlenecks, measure Core Web Vitals, and produce actionable optimization recommendations.

When to Apply

Use this skill when:

• Auditing website performance for Core Web Vitals compliance
• Diagnosing slow page loads, high Time to Interactive, or layout shifts
• Optimizing Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), or Interaction to Next Paint (INP)
• Reviewing frontend code for performance anti-patterns
• Preparing a site for Google's page experience ranking signals
• Optimizing build output for Webpack, Vite, Next.js, or Nuxt

Core Web Vitals Thresholds