TL;DR
Google PageSpeed Insights (PSI) is a free web tool that reports both field data from the Chrome User Experience Report and lab data from Lighthouse for a given URL on mobile and desktop.
What is Google PageSpeed Insights (PSI)?
Google PageSpeed Insights (PSI) is a free web tool that reports both field data from the Chrome User Experience Report and lab data from Lighthouse for a given URL on mobile and desktop.
Learn more in our PageSpeed Insights vs other testing tools guide, or work with us through our done-for-you speed optimization service.
How PSI is Measured
PSI can be used at pagespeed.web.dev or via its public API.