core-web-vitals
Optimize Core Web Vitals (LCP, INP, CLS) for better page experience and search ranking. Use when asked to "improve Core Web Vitals", "fix LCP", "reduce CLS", "optimize INP", "page experience optimization", or "fix layout shifts".
npx skills add addyosmani/web-quality-skills --skill core-web-vitals --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Core Web Vitals optimization Targeted optimization for the three Core Web Vitals metrics that affect Google Search ranking and user experience. ## The three metrics | Metric | Measures | Good | Needs work | Poor | |--------|----------|------|------------|------| | **LCP** | Loading | ≤ 2.5s | 2.5s – 4s | > 4s | | **INP** | Interactivity | ≤ 200ms | 200ms – 500ms | > 500ms | | **CLS** | Visual St
What does the core-web-vitals skill do?
Optimize Core Web Vitals (LCP, INP, CLS) for better page experience and search ranking. Use when asked to "improve Core Web Vitals", "fix LCP", "reduce CLS", "optimize INP", "page experience optimization", or "fix layout shifts".
How do I install it?
Run `npx skills add addyosmani/web-quality-skills --skill core-web-vitals --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From addyosmani/web-quality-skills, a repository with 2,577 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.