Free Website Performance Checker
Enter any website URL and get a plain-English page-speed score — 12 automated checks for image dimensions, lazy loading, next-gen formats, non-blocking scripts and stylesheets, font-display swap, resource hints, compression, cache-friendly headers, server response time, a third-party host budget, and a page-weight budget that decide whether your page feels fast. Heuristics are stated as heuristics throughout. This is markup and response-header analysis — not a lab test.
Privacy: we fetch the URL you enter to run the checks, but we never store it. The only things recorded are an anonymous pageview and, on a scored result, an anonymous "grader run" for our own stats. Public websites only.
What the checker checks
Does it arrive fast?
Server response time, compression, cache-friendly headers, and a page-weight budget.
Does it paint fast?
Image dimensions, lazy loading, next-gen formats, non-blocking scripts and stylesheets, and font-display: swap.
Does it stay lean?
Resource hints for critical origins and a third-party host budget.