The PageSpeed Insights Checker is a free tool that runs Google's PageSpeed Insights analysis on any URL and returns performance scores for both mobile and desktop. PageSpeed Insights is powered by Google Lighthouse and measures Core Web Vitals — the user experience metrics Google uses as ranking signals since 2021.

A fast website improves user experience, reduces bounce rate and satisfies Google's performance requirements for optimal ranking. This tool identifies exactly what is slowing your site down and prioritizes fixes by impact.

How to Test Page Speed

• Enter the URL you want to test
• Click Run Test
• Wait 10–15 seconds for the analysis to complete
• View separate mobile and desktop performance scores (0–100)

Core Web Vitals Measured

• LCP (Largest Contentful Paint) — time for the largest content element to load (target: <2.5s)
• FID (First Input Delay) — time until the page responds to interaction (target: <100ms)
• CLS (Cumulative Layout Shift) — visual stability score (target: <0.1)
• FCP (First Contentful Paint) — time to first visible content

Quick Wins for Speed

• Optimize and compress images (use our Image Optimizer)
• Enable GZIP compression (check with our GZIP Checker)
• Minify CSS and JS (use our CSS Minifier and JS Minifier)

Free, powered by Google Lighthouse API, no login required.

Want to learn more? Read our complete guide: How to Speed Up Your Website and Improve Core Web Vitals →