Measure your page load time, TTFB, page size and performance grade — instantly, no software needed.
"Speed" is not one number. A page can start rendering quickly but remain unusable for seconds, or load fast on your connection and crawl on a phone. Modern measurement separates loading, interactivity and visual stability, which is why a single overall score can be misleading. What matters most is how quickly the main content appears and how soon the page responds to a tap or click — not the moment the browser finishes fetching every last asset.
Largest Contentful Paint (LCP) marks when the biggest visible element — usually a hero image or heading block — finishes rendering; Google treats 2.5 seconds or less as good. Interaction to Next Paint (INP) measures how quickly the page responds to user input, with 200 milliseconds or less considered good. Cumulative Layout Shift (CLS) quantifies unexpected movement as things load, scored 0.1 or below for a good result. Time to First Byte (TTFB) covers server response time and sits upstream of everything else — a slow TTFB caps how good the other metrics can be.
A test like this one produces lab data: a single measurement from one location on a simulated connection. It is repeatable and useful for spotting regressions, but it is not what Google uses for ranking. That comes from field data collected from actual Chrome users over a 28-day window. The two often disagree, and when they do the field data wins. Use lab tests to diagnose and iterate quickly, then confirm improvements in Search Console once real-user data catches up — which typically takes several weeks after a fix ships.