This walks you through a structured web performance audit covering Core Web Vitals like LCP, FID, and CLS, plus the full analysis process from measurement to optimization. You'd pull this out when diagnosing slow page loads, prepping for SEO work, or setting performance baselines after a major deploy. The real value is in the reference guides that break down metrics, analysis workflows, and specific optimization strategies. It's heavy on the "what to measure and why" side, which is actually helpful since most teams jump straight to guessing at fixes without proper measurement. One honest take: the emphasis on field data plus lab data and continuous monitoring is the right approach, even if it feels like more work upfront.
npx skills add https://github.com/aj-geddes/useful-ai-prompts --skill web-performance-audit