core-web-vitals

Relocate resource intensive third-party scripts off of the main thread and into a web worker. 🎉

Agent Skills for optimizing web quality based on Lighthouse and Core Web Vitals.

A Chrome extension to measure essential metrics for a healthy site

A better whois and domain intelligence toolkit

Codex-first SEO skill suite. 26 workflows, 24 TOML agents, DataForSEO/Gemini/Google/Firecrawl integrations, GEO/AEO, CWV, schema, backlinks, local/maps, and deterministic reports.

Open-source SEO monitoring. GSC + Site Crawler + Core Web Vitals in one dashboard.

🔍 Google SEO's full docs as an AI prompt machine — drop it into your AI assistant to map every public route, audit each page against Google's rules, and fix the gaps step by step.

See and share Core Web Vitals and PageSpeed Insights results simply and easily.

Visualise the Core Web Vitals metric Cumulative Layout Shift (CLS) with a simple GIF.

SEOMonster: a local, user-credential-driven MCP server for SEO workflows over Google Search Console, GA4, PageSpeed Insights, and Cloudflare. Read-first, open source.

SEO Landing: Give your AI coding agent the capabilities of a senior Technical SEO engineer. An agent skill for building high-performance, technically optimized SEO landing pages. Turn an AI coding agent into a technical SEO specialist. Build and improve landing pages with: • 🚀 100/100 Google PageSpeed target • ⚡ Core Web Vitals optimization

Example website used in Frontend Masters course "Fundamentals of Web Performance"

Everything that makes a website good in 2026: security headers, Core Web Vitals, SEO, accessibility, privacy, AI crawlers. One line and a snippet per item — no abstract advice.

A self-hosted RUM Core Web Vitals monitoring platform for Next.js applications.

A tiny (500 bytes) CrUX API wrapper that supports record & history API, handles errors, and provides types.

Drop-in WebP, AVIF, and JPEG XL delivery for TYPO3 images — automatic, no URL or template changes

Qwik Image Component

The SEO + AI-search (GEO/AEO) optimization toolkit for Claude Code — two-score audit + opt-in fixer. Built for 2026-2027.

Six-tool MCP server for Google PageSpeed Insights & Chrome UX Report APIs. Analyze, compare, and optimize web performance directly through Claude, Cursor, or any MCP-compatible AI client.

LazyHTML is an OpenSource Javascript Library that Supports Lazy Loading of any elements without Modifying Code, LazyHTML can lazy load Ads, Videos, Images, Widgets, Javascript, CSS, Inline-Javascript, Inline-CSS & Any HTML.