Performance Profiler

Comprehensive web performance auditing skill using Google Lighthouse CLI. Run full audits on any URL, enforce performance budgets that fail CI builds when exceeded, compare scores between staging and production deploys, and track Core Web Vitals trends over time with CSV logging. Includes ready-to-use scripts for extracting key metrics, checking against configurable budgets, A/B comparing two URLs, and CI pipeline integration. Works on any publicly accessible URL or local dev server. Every web project needs performance monitoring — this skill makes it systematic.