See how well your website performs. Then, get tips to improve your user experience. Sign in to track your progress over time.

Sorry, the measure tool does not work with legacy browsers or with JavaScript disabled. Please try again using an up-to-date version of Edge, Firefox, Safari, or Chrome.

Run tests on your site

Enter your site's URL to see how well it performs across all audits.

Look at what matters

See your site's performance across the areas you care about.

Get tips for improving

Each test comes with helpful steps to improve your site's results.
When you measure your site, uses Lighthouse, an open-source, automated tool for improving the quality of web pages. Lighthouse will audit your site in the following categories:
Audits for metrics like first paint and time to interactive to determine lag.
Best Practices
Looks for everything from HTTPS usage to correct image aspect ratios.
Checks for best practices to ensure your site is discoverable.
Checks for common issues that may prevent users from accessing your content.
All tests are run using a simulated mobile device, throttled to a fast 3G network & 4x CPU slowdown.