core-web-vitalslisted

When the user wants to optimize Core Web Vitals, fix LCP, INP, or CLS issues. Also use when the user mentions "Core Web Vitals," "CWV," "LCP," "INP," "CLS," "FID," "page speed," "page performance," "Largest Contentful Paint," "Interaction to Next Paint," "Cumulative Layout Shift," or "Page Experience." For GSC CWV, use google-search-console.
gaznilmuzammil12-prog/seo-skills-by-gaznil · ★ 0 · Web & Frontend · score 73

Install: claude install-skill gaznilmuzammil12-prog/seo-skills-by-gaznil

# SEO Technical: Core Web Vitals Guides optimization of Core Web Vitals (CWV)—Google's user experience metrics that affect search ranking. CWV are confirmed ranking factors for mobile and desktop. **When invoking**: On **first use**, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On **subsequent use** or when the user asks to skip, go directly to the main output. ## Scope (Technical SEO) - **LCP** (Largest Contentful Paint): Loading performance; time to render largest content element - **INP** (Interaction to Next Paint): Responsiveness; replaced FID on March 12, 2024 - **CLS** (Cumulative Layout Shift): Visual stability; unexpected layout shifts ## Target Thresholds (75th percentile, field data) | Metric | Target | Good | Needs Improvement | Poor | |--------|--------|------|-------------------|------| | **LCP** | ≤2.5s | ≤2.5s | 2.5–4.0s | >4.0s | | **INP** | ≤200ms | ≤200ms | 200–500ms | >500ms | | **CLS** | <0.1 | ≤0.1 | 0.1–0.25 | >0.25 | **Source**: [Google Page Experience](https://developers.google.com/search/docs/appearance/page-experience) ## Initial Assessment **Check for project context first:** If `.claude/project-context.md` or `.cursor/project-context.md` exists, read it for site URL. Identify: 1. **Tools**: GSC Core Web Vitals report, PageSpeed Insights, Chrome DevTools 2. **Metrics**: Which metric is failing (LCP, INP, CLS) 3. **Page type**: Hero, article, product, list—LCP candidate dif