What is PageSpeed Insights?

PageSpeed Insights (PSI) is powered by Google Lighthouse, an open-source tool for improving the quality of web pages. It provides both lab data (synthetic testing) and field data (real user metrics from Chrome User Experience Report).

Web.dev Performance: https://web.dev/performance/

Core Web Vitals Guide: https://web.dev/vitals/

Lighthouse Documentation: https://developer.chrome.com/docs/lighthouse/

Chrome UX Report: https://developers.google.com/web/tools/chrome-user-experience-report