performance
Installation
SKILL.md
Performance Skill
This skill ensures HTML pages are optimized for fast loading and good Core Web Vitals scores.
Core Web Vitals
The three metrics Google uses for page experience:
| Metric | Target | Measures |
|---|---|---|
| LCP (Largest Contentful Paint) | < 2.5s | Loading performance |
| INP (Interaction to Next Paint) | < 200ms | Interactivity |
| CLS (Cumulative Layout Shift) | < 0.1 | Visual stability |
Resource Hints
Preconnect (High Priority)
Establish early connections to critical third-party origins: