How fast is your site for real visitors?
Enter your URL and see the Core Web Vitals — LCP, INP, CLS — that Google records from real Chrome visitors, on mobile and desktop, with the two or three worth fixing first. Field data from Google’s Chrome UX Report, not a one-off lab guess.
These are Google’s own thresholds and Google’s own field data, measured over the trailing 28 days — not our opinion. Core Web Vitals are a real ranking signal, but a modest one; fix them for your visitors first. Want the full picture? Run the free AEO checker
What are Core Web Vitals?
Core Web Vitals are three metrics Google uses to describe how a page feels to a real visitor. LCP (Largest Contentful Paint) is how long the main content takes to appear, INP (Interaction to Next Paint) is how quickly the page reacts when someone taps or clicks, and CLS (Cumulative Layout Shift) is how much the layout jumps around while it loads. Google publishes a “good,” “needs improvement,” and “poor” band for each, and this tool reads your real-visitor numbers against them.
Are Core Web Vitals a Google ranking factor?
Yes, but a modest one. Page experience, which includes Core Web Vitals, is a confirmed Google ranking signal — it behaves more like a tie-breaker between pages that are otherwise close than a lever that lifts weak content. The bigger reason to fix a slow or unstable page is the visitors themselves: people leave pages that load slowly or shift under their thumb. Treat good vitals as table stakes, not a growth hack.
Why does the checker say there’s no field data for my site?
Because Google only reports Core Web Vitals for a site once it gets enough Chrome traffic to measure, and plenty of smaller firm sites don’t clear that bar yet. It isn’t a mark against you and it doesn’t mean your site is slow — there’s just no real-visitor sample to report. To estimate the same metrics from a single load in the meantime, run your URL through Google’s PageSpeed Insights, which falls back to a lab test.
What’s the difference between this and Google PageSpeed Insights?
This tool shows field data — how real Chrome visitors actually experienced your site over the last 28 days — which is the data Google uses for its page-experience signal. PageSpeed Insights shows that same field data when it exists, plus a lab score from one simulated load on Google’s hardware. The lab score is handy for debugging a specific page, but the field data is what reflects your real visitors. When a site has no field data, the lab test is the fallback.