Free tool

Free website speed test

See how fast your website loads on mobile and desktop, how it scores on Core Web Vitals, and what to fix first.

Understanding the results

What the test measures

Largest Contentful Paint

How long the main content takes to appear. Good is 2.5 seconds or less.

Interaction to Next Paint

How quickly the page responds to taps and clicks. Good is 200 milliseconds or less.

Cumulative Layout Shift

How much the layout jumps while loading. Good is 0.1 or less.

FAQ

Speed test questions

Where do these results come from?

The test runs Google PageSpeed Insights, the same Lighthouse engine Google uses, and shows real-user Chrome data for your site when Google has enough of it.

Why is my mobile score lower than desktop?

Mobile tests simulate a mid-range phone on a slower network, so heavy images, scripts and fonts cost much more. Google indexes the mobile version of your site, which makes the mobile result the more important one.

Why does the score change between tests?

Lab scores vary slightly with server response times, third-party scripts and network conditions. Look at trends and the Core Web Vitals from real users rather than a single run.

Is the test free?

Yes. There is no sign-up, and we do not store the addresses you test beyond a short cache that keeps repeated tests fast.