See whether your website requires JavaScript to load, and how JS code impacts your Largest Contentful Paint metric and total page weight.

Passing Google's Core Web Vitals can help you rank higher in search results. This tool measures your Core Web Vitals and alerts you if you can improve your site. It helps you understand how your users are experiencing your site.

This tool analyses CSS code to identify large rules and selectors. You might find that there are large CSS selectors generated by Sass or assets like images or fonts embedded in the file.

This tool analyzes the loading speed of your website and provides detailed reports that help you optimize it. View how your site renders frame by frame and use identify network requests that slow down your site.

This tool parses HTML code to identify what causes bloated document responses. For example, you might find that there are large inline images or that there's a big chunk of JSON for hydrating a single-page app.

Resource hints like preload and preconnect can make sites load faster, but can also hurt performance if used wrongly. This tool checks your site for common problems with them.

This tool runs Google's Lighthouse tool with 100 different combinations of network bandwidth and latency. See how users on different connection types would experience your website.

This tool crawls your website and selects one or more random pages. You can rediscover old content and make sure all pages are up to date.