How this tool works

You paste a list of URLs and the tool sends each one to an official Google API that runs the exact same Lighthouse audit as PageSpeed Insights. You get back the Performance, Accessibility, Best Practices and SEO scores together with the Core Web Vitals (LCP, FCP, CLS, TBT, Speed Index, TTI).

It's free for you: the API key lives on the server and never reaches the browser. Results are cached for 12 hours per URL and per strategy (mobile or desktop), so re-running an audit already done earlier in the day comes back instantly.