PageSpeed Insights

Google's free tool that reports a page's real-user Core Web Vitals and lab performance with suggestions for improvement.

By Brandon MinaCEO, BrandPilot AIUpdated November 2026

Short answer

PageSpeed Insights is Google's free tool that reports a page's real-user Core Web Vitals and lab performance, with suggestions for improvement. It combines field data from actual Chrome users, where available, with a Lighthouse lab audit. Site owners use it to diagnose slow loading, layout shifts and responsiveness problems on mobile and desktop.