Pagespeed Insights Checker

Run Google's PageSpeed Insights analysis on any URL — get performance scores, Core Web Vitals, and prioritized fixes for both mobile and desktop.

100% Free Powered by Google Lighthouse No Registration

Enter a URL to test page speed

Real Lighthouse DataSame engine as Google's own tool

Mobile + DesktopSeparate scores for each

Core Web VitalsLCP, CLS, TBT, FCP & more

Prioritized FixesRanked by real impact

About Pagespeed Insights Checker

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 →

Frequently Asked Questions

What is a good PageSpeed score?

Google Lighthouse rates 90-100 as good (green), 50-89 as needs improvement (orange), and below 50 as poor (red). Aim for 90+ on both mobile and desktop, since mobile scores are typically lower due to slower network/CPU simulation.

Why is my mobile score lower than desktop?

Lighthouse simulates mobile tests on a throttled mid-tier device with a slower simulated network connection, closely matching real-world mobile conditions. Desktop tests use faster simulated hardware and network, so scores are usually higher.

What are Core Web Vitals?

Core Web Vitals are Google's official user-experience metrics: LCP (loading speed), CLS (visual stability), and INP/TBT (interactivity/responsiveness). They've been a confirmed Google ranking signal since 2021.

How is this different from Google's own PageSpeed Insights site?

This tool calls the same official Google PageSpeed Insights API and Lighthouse engine Google's own site uses, so the scores and metrics you see here are identical — just presented with both mobile and desktop results together.

Why does the test take 10-15 seconds?

Each test runs a real, full page load through Google's Lighthouse engine — fetching every resource, executing JavaScript, and measuring rendering timings — for both mobile and desktop. That real-browser simulation is what takes time, but it's also what makes the results accurate.

What's the fastest way to improve my score?

Start with the highest-impact items in the Opportunities & Diagnostics table above — usually image compression, enabling GZIP/Brotli compression, minifying CSS/JS, and reducing third-party scripts. Fix the top few items first; they typically account for most of the score gap.