Free Website Speed Test: Measure Core Web Vitals & Mobile Performance

Free online speed testing tool in English and Spanish. Audit real performance with Google Core Web Vitals metrics. Uncover render-blocking scripts and heavy images instantly at zero cost.

• Official Google Core Web Vitals diagnostics (LCP, INP, CLS).
• Server responsiveness and TTFB measurement.
• Identification of heavy third-party tags and scripts (GTM, Hotjar, Chatbots).
• Unoptimized image detection (missing modern WebP/AVIF formats).
• Estimated conversion revenue loss caused by latency.