Website Speed Checker

Google PageSpeed Insights

Website Speed Checker

Test any public web page with Google PageSpeed Insights. The report includes mobile performance, accessibility, best-practices and SEO checks powered by Lighthouse.

Page URL

The report opens on Google PageSpeed Insights in a new tab. The URL you enter is sent to Google so it can run the test.

What the test shows: PageSpeed Insights combines Lighthouse lab testing with Chrome UX Report field data when a page has enough real-world traffic. Lab scores can vary between runs and do not guarantee search rankings.

How to test a website

1. Enter the full address of a publicly accessible page.
2. Select Run free speed test.
3. Review the mobile report in the new PageSpeed Insights tab.
4. Switch to Desktop there if you also want a desktop test.
5. Fix the most important opportunities, then run the test again.

Understanding the report

Performance summarizes Lighthouse loading and responsiveness audits. Accessibility checks automatically detectable accessibility problems. Best Practices reviews common security and browser-quality checks. SEO checks basic technical signals that search engines need to access and understand a page.

Important measurements include First Contentful Paint, Largest Contentful Paint, Total Blocking Time, Cumulative Layout Shift and Speed Index. Treat one run as a diagnostic snapshot rather than a permanent score.

Common ways to improve page speed

• Compress oversized images and use modern formats such as WebP or AVIF.
• Remove unused JavaScript and CSS.
• Defer non-essential scripts and third-party widgets.
• Serve static files with effective cache headers.
• Reserve space for images, advertisements and embeds to reduce layout shifts.
• Improve server response time and use a content delivery network when appropriate.

Data source: Google PageSpeed Insights and Lighthouse documentation.