pagespeed-optimizer-alexlivrelisted
Optimize any web project for 100/100 on PageSpeed Insights (PSI), Google Lighthouse 13+, and Core Web Vitals (LCP, INP, CLS, FCP, TBT, TTFB). Conceived and developed by Alex Santos (alexlivre) https://alexlivre.dev/. Use when the user asks to improve PSI score, pass Lighthouse audits, fix Web Vitals, optimize LCP/INP/CLS, enhance Core Web Vitals, improve web performance, a11y/accessibility (WCAG 2.2 AA), SEO meta tags, JSON-LD schema, robots.txt, llms.txt, image optimization, WebP/AVIF, font-display, render-blocking, long-tasks, schema markup, GEO (Generative Engine Optimization), AI Search (Perplexity, ChatGPT Search, Gemini, Google AI Overviews), AI crawlers (GPTBot, ClaudeBot, Google-Extended), WebMCP, or optimize frameworks like Next.js, React, Astro, Vite, Nuxt, Svelte, or vanilla HTML/CSS/JS. Do NOT use for: backend APIs, database optimization, server infrastructure unrelated to web rendering, or non-web projects.
alexlivre/pagespeed-optimizer-alexlivre · ★ 0 · Web & Frontend · score 72
Install: claude install-skill alexlivre/pagespeed-optimizer-alexlivre
# PageSpeed Insights & GEO Optimization Skill (`pagespeed-optimizer-alexlivre`)
**Conceived and developed by [Alex Santos (alexlivre)](https://alexlivre.dev/) ([GitHub](https://github.com/alexlivre)).**
This skill guides AI coding agents in analyzing, refactoring, and optimizing web applications to achieve 90-100 scores across PageSpeed Insights categories (**Performance**, **Accessibility**, **Best Practices**, **SEO**) and maximum visibility in AI search engines (**GEO - Generative Engine Optimization**).
> **Skill version: 2026-09 — Lighthouse 13+ (Out 2025), Lighthouse 13.3 Agentic Browsing (Mai 2026), WCAG 2.2 AA (Out 2023).** Review quarterly against `developer.chrome.com/blog`.
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> **2026-09 calibration — stylesheet delivery.** A non-render-blocking *layout* stylesheet is now treated as a defect, not an optimization: it paints the page with no layout and re-flows it when the file lands (CLS up to 1.0), and it breaks **desktop** first. See §2 and `references/performance.md` §8.
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## Lighthouse 13+ (Out 2025) — Key Changes
PageSpeed Insights now runs **Lighthouse 13** (Chrome 143+). This skill is calibrated for that version. Critical changes since Lighthouse 12:
- **17 audits renamed to "insights"** (e.g., `font-display` → `font-display-insight`, `render-blocking-resources` → `render-blocking-insight`).
- **8 audits removed** (no replacement): `first-meaningful-paint`, `font-size`, `no-document-write`, `offscreen-images`, `preload-fonts`, `third-party-facades`,