REAL-TIME SPEED TEST: Powered by official Google Lighthouse v11 PageSpeed API!
Analyze Core Web Vitals (LCP, INP, CLS, FCP, TTFB) in real time. Get instant speed scores and performance optimization guides.
Measures loading performance. Marks when the main content block has loaded.
Measures overall page responsiveness to user clicks, taps, and keyboard inputs.
Measures visual stability. Prevents annoying content jumps during page render.
Marks the time at which the first text, image, or non-white element renders.
Measures web server responsiveness and initial HTTP network latency.
Aggregated performance score calculated by official Google Lighthouse rules.
Common questions about Google Lighthouse and performance audits.