Run tests on your site Enter your s

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. How your site is measured When you measure your site, web.dev uses Lighthouse, an open-source, automated tool for improving the quality of web pages. Lighthouse will audit your site in the following categories: Performance 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. SEO Checks for best practices to ensure your site is discoverable. Accessibility 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. Where you can learn and measure Whether you already have a website or you're just getting started, learn to build for the modern web at web.dev. Then, apply your new skills and solutions to any personal or professional site you work on. After you've launched your site, come back to web.dev and measure how well it supports your users. If there are areas where it can improve, you'll get immediate steps to increase your metrics. As the web advances, users' expectations get higher. With web.dev's guidance, you can give your users the best possible experience, wherever they are.