lighthouse-perf
Installation
SKILL.md
lighthouse-perf
Overview
The Core Web Vitals are Google's three canonical user-experience metrics (web-vitals):
| Metric | Measures | "Good" threshold |
|---|---|---|
| LCP (Largest Contentful Paint) | Loading performance | ≤ 2.5 seconds |
| INP (Interaction to Next Paint) | Interactivity | ≤ 200 milliseconds |
| CLS (Cumulative Layout Shift) | Visual stability | ≤ 0.1 |
INP became a stable Core Web Vital in 2024, replacing FID (web-vitals). The canonical measurement standard is the 75th percentile of page loads, segmented across mobile and desktop (web-vitals).