GLOSSARY TERM
What is Lighthouse?
Definition
Google's open-source automated tool for auditing web page quality across performance, accessibility, best practices, and SEO. Available in Chrome DevTools and as a Node.js library.
Why it Matters for AI Search
Lighthouse is the closest thing to Google's own quality scorecard for any URL. Scores feed into PageSpeed Insights and influence Core Web Vitals readings. Lab data only — pair with field data (CrUX) for real-user accuracy.
Related Terms
PageSpeed Insights (PSI)CrUX (Chrome User Experience Report)WebPageTestGTmetrixGoogle Search Console (GSC)Core Web Vitals
Browse all 105 terms →See if your site is optimized.
Run a free AI Search Readiness scan to detect missing JSON-LD schema, poor Core Web Vitals, and more.
Scan My Website