Free website tools

Quick, focused checks for one thing at a time. Each runs in seconds with the same engine as our full audit, which checks all of them at once.

• Core Web Vitals Checker

  Measure LCP, CLS, INP and the Lighthouse performance score for any URL, with real-user Chrome data when your page has enough traffic.

  Performance · Open tool →

• Compression & HTTP/2 Checker

  Check whether your HTML is served with Brotli or gzip, whether the server speaks HTTP/2 or HTTP/3, and how fast the first byte arrives.

  Performance · Open tool →

• Mobile-Friendly Test

  Check the viewport tag, mobile Lighthouse performance and accessibility, page weight and intrusive prompts, and see a phone screenshot.

  Performance · Open tool →

• Is It Down? Website Down Checker

  Check whether a website is up right now from our server in Germany: status code, response times, redirects and the exact reason when it fails.

  Performance · Open tool →