Page Speed Checker
Estimate a page's load time and speed score from its size, request count and server response time — a quick estimator, not a live measurement — free, fast and private.
How to use Page Speed Checker
- Enter the page's total size in KB (from your browser's DevTools Network tab).
- Enter the number of requests and the server response time (TTFB) in ms.
- Pick the connection type your visitors typically use.
- Click Check Speed to see the estimated load time and score.
Note: this tool runs in your browser. Nothing is uploaded.
Honest note: This is an ESTIMATE based on the numbers you enter. It does not fetch or measure a live website — browsers cannot do that (CORS blocks cross-site fetches), and a real measurement needs a server-side test such as Google PageSpeed Insights. Use the estimate to compare optimisations, not as an official score.
Frequently Asked Questions
Does this tool measure my live website?
No. It estimates load time from the page size, request count, TTFB and connection speed you enter. It never fetches your site.
How is the estimated load time calculated?
Roughly: TTFB plus download time (size divided by connection speed) plus a small per-request overhead. Real load time also depends on render-blocking scripts, images and caching.
What is a good page load time?
Under about 2.5 seconds on a typical mobile connection is a good target. Over 4 seconds usually costs visitors.
Is my data uploaded anywhere?
No. The numbers you enter stay in your browser.