Measure time to first byte and total download time for a URL from our server.
A server response time checker measures how long a server takes to start responding (time to first byte) and to finish sending the page. Slow responses delay everything that follows, including Core Web Vitals.
Measured from a server in Sydney, Australia.
This tool fetches the address you enter once, from our server, and reports what a crawler would receive. The URL is not stored; only a short-lived rate-limit counter is kept. Results show the page at the moment of the check and can differ from what a logged-in browser or a bot with different headers sees.
Reads the real page at the moment you run it, with every redirect followed and shown.
Each finding says what it means and what to do next, not just a raw value.
Copy the output straight into your CMS, spreadsheet, ticket or client report.
Free, with no signup. Fair-use limits keep the tool fast for everyone.
Use a full public URL.
The page is fetched live from our server.
Apply the fixes, then run it again.
Look at time to first byte first. Google's web.dev guidance treats a TTFB under roughly 800 milliseconds as good for real users, and lower is better since it leaves more of the loading budget for rendering. If the number is high, check the usual causes: slow hosting, no page caching, heavy database queries, missing CDN, or long redirect chains before the real page. Add full-page caching, upgrade the plan or move to a closer region, and trim slow plugins or queries. Then measure again several times at different hours. Compare the total download time as well, which grows with page size and weak compression.
Relying on a single measurement is the main error, since response times vary with server load, cache state and network path. The first request after a cache purge is often slower than later ones, so test more than once. Measuring only the homepage hides slow templates such as search, cart or category pages. Comparing a result from a distant test location with your own local experience can mislead you, as can ignoring redirects that add time before the final page. Do not assume a fast server fixes poor Core Web Vitals on its own, because rendering and script weight also matter. Use field data to confirm what real visitors experience.
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