---
title: "Learn Lighthouse & Web Vitals: Performance Guides · Unlighthouse"
canonical_url: "https://unlighthouse.dev/learn-lighthouse"
last_updated: "2026-06-30T08:47:47.273Z"
meta:
  description: "Free guides to improve Lighthouse scores and Core Web Vitals. Fix LCP, CLS, INP, accessibility, and SEO audits with actionable tutorials and tools."
  "og:description": "Free guides to improve Lighthouse scores and Core Web Vitals. Fix LCP, CLS, INP, accessibility, and SEO audits with actionable tutorials and tools."
  "og:title": "Learn Lighthouse & Web Vitals: Performance Guides · Unlighthouse"
---

</h1>

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Unlighthouse on GitHub

# **Learn Google Lighthouse** Guides and tutorials for improving your site's Core Web Vitals and performance. All guides include authoritative citations from Google and real-world statistics. ## **Core Web Vitals ** Core Web Vitals are [~~Google's ranking factor~~](https://developers.google.com/search/docs/appearance/core-web-vitals) for measuring user experience. Only [~~48% of mobile sites~~](https://almanac.httparchive.org/en/2024/performance) currently pass all three metrics. [**59%** mobile pass rate<h3>**Largest Contentful Paint (LCP)**</h3>Improve loading performance. Only 59% of mobile sites pass.](https://unlighthouse.dev/learn-lighthouse/lcp) [**79%** mobile pass rate<h3>**Cumulative Layout Shift (CLS)**</h3>Eliminate layout shifts. 79% of mobile sites pass.](https://unlighthouse.dev/learn-lighthouse/cls) [**New** replaced FID<h3>**Interaction to Next Paint (INP)**</h3>Make interactions responsive. Replaced FID in March 2024.](https://unlighthouse.dev/learn-lighthouse/inp) ## **Guides **[<h3>**Core Web Vitals Overview**</h3>What they measure, why they matter, and how to test them.](https://unlighthouse.dev/learn-lighthouse/core-web-vitals) [<h3>**Bulk Lighthouse Testing**</h3>Test every page, not just the homepage.](https://unlighthouse.dev/learn-lighthouse/bulk-lighthouse-testing) [<h3>**Lighthouse CI**</h3>Automate audits in your CI/CD pipeline with @lhci/cli.](https://unlighthouse.dev/learn-lighthouse/lighthouse-ci) [<h3>**PageSpeed Insights API**</h3>Fetch Lighthouse data programmatically with Node.js or Python.](https://unlighthouse.dev/learn-lighthouse/pagespeed-insights-api) [<h3>**PSI vs Lighthouse**</h3>Why scores differ between PageSpeed Insights and local Lighthouse.](https://unlighthouse.dev/learn-lighthouse/pagespeed-insights-vs-lighthouse) [<h3>**Lighthouse with Playwright**</h3>Run audits on authenticated pages and SPAs.](https://unlighthouse.dev/learn-lighthouse/playwright) ## **Audit Categories **[<h3>**SEO Audits**</h3>All 8 Lighthouse SEO checks explained with fixes.](https://unlighthouse.dev/learn-lighthouse/seo) [<h3>**Accessibility**</h3>16 audit guides covering ARIA, contrast, and screen readers.](https://unlighthouse.dev/learn-lighthouse/accessibility) [<h3>**Best Practices**</h3>HTTPS, console errors, deprecated APIs, and more.](https://unlighthouse.dev/learn-lighthouse/best-practices) ## **Free Tools **[<h3>**Bulk PageSpeed Test**</h3>Test multiple URLs at once with the PageSpeed Insights API.](https://unlighthouse.dev/tools/bulk-pagespeed) [<h3>**Core Web Vitals Checker**</h3>Check if a page passes all three Core Web Vitals.](https://unlighthouse.dev/tools/cwv-checker) [<h3>**CWV Comparison**</h3>Compare Core Web Vitals across 2-4 sites side-by-side.](https://unlighthouse.dev/tools/cwv-compare) ### **Test Your Entire Site ** Most tools only test one page at a time. Unlighthouse scans your entire site and shows scores for every page. [**Get Started **](https://unlighthouse.dev/guide/getting-started/installation)