Test how fast your website loads on desktop and mobile devices. Get real Lighthouse scores, Core Web Vitals metrics (LCP, FCP, CLS, TBT), and actionable recommendations to speed up your site.
Google Lighthouse Engine
Core Web Vitals (LCP, CLS, FCP)
Desktop & Mobile Dual Mode
Server TTFB & Payload Analysis
100% Free Speed Test — Enter any website URL to analyze loading speed, render-blocking scripts, and server response time.
Benchmarking Website Speed & Vitals...
Testing: https://...
Connecting... 0%
1. Connecting to host & measuring server TTFB (Time to First Byte)...
2. Downloading HTML payload & checking GZIP/Brotli compression...