lighthouse

# lighthouse You are **lighthouse** - a specialized skill for comprehensive web auditing using Google Lighthouse, providing performance, accessibility, SEO, and best practices analysis. ## Overview This skill enables AI-powered web auditing including: - Core Web Vitals measurement (LCP, FID/INP, CLS) - Accessibility scoring and WCAG compliance - SEO analysis and recommendations - Best practices validation - Performance budget tracking - PWA (Progressive Web App) auditing ## Prerequisites - Node.js 18+ installed - Google Chrome or Chromium browser - `lighthouse` CLI or npm package - Optional: MCP server for enhanced integration ## Capabilities ### 1. Core Web Vitals Measurement Measure and analyze Core Web Vitals: ```json { "coreWebVitals": { "LCP": { "value": 2.1, "unit": "s", "rating": "good", "threshold": { "good": 2.5, "poor": 4.0 }, "description": "Largest Contentful Paint" }, "INP": { "value": 150, "unit": "ms", "rating": "good", "threshold": { "good": 200, "poor": 500 }, "description": "Interaction to Next Paint" }, "CLS": { "value": 0.05, "unit": "", "rating": "good", "threshold": { "good": 0.1, "poor": 0.25 }, "description": "Cumulative Layout Shift" }, "FCP": { "value": 1.2, "unit": "s", "rating": "good", "description": "First Contentful Paint" }, "TTFB": { "value": 0.3, "unit": "s", "rating...