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Free page speed test

Free Page Speed Test. Core Web Vitals & Performance Score

A slow site costs you rankings and customers. Type the URL below and SiteGuardian fetches it once, measures time-to-first-byte and LCP (approximated server-side), reports a 0 to 100 performance score, and lists up to three fixes. There's a fair warning: this is a server-side one-shot. FID/INP and CLS ship as N/A because they need a real browser to measure. No account required.

Laptop on a wooden desk showing a performance chart with a downward-trending line.
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Include the https:// — SiteGuardian fetches it once, measures response time, and lists three follow-up fixes. No account needed.

What you'll see

  • TTFB. How fast the server starts responding.
  • LCP proxy. Approximated from the server-side response time (the closest honest measure from one GET).
  • Total response time (TTFB + transfer) and payload size.
  • A 0 to 100 performance score.
  • Top 3 actionable fixes, drawn from the response headers.
  • FID / INP and CLS. Explicitly marked N/A (requires a real browser).

Want this measured around the clock?

Skip the manual checks — SiteGuardian watches your URL around the clock and emails you the second it goes off.

Get continuous performance monitoring

SiteGuardian is the website uptime monitor built for small businesses. It pings your site, checkout, contact forms and SSL. And emails you the second something breaks.