PageSpeed

Track site speed with real user (CrUX) data and catch improvements and regressions early.

Detailed Metrics

This tab opens the 10 detail metrics in your site's CrUX record: not just LCP itself but the sub-parts that make it up, so you can see whether the problem is in the server, the resource load or the render.

To get started, enter your site address above and press Run Test.

Core metrics

LCP, INP, CLS, FCP and TTFB as p75 values, alongside Google's thresholds.

LCP sub-parts

Image TTFB, resource delay, load duration and render delay: the anatomy of LCP.

Network quality (RTT)

Your visitors' real round-trip latency, the connection profile of your audience.

Device split

The phone, desktop and tablet breakdown of your traffic, which sets your optimization priority.

This data refreshes weekly. CrUX updates the 28-day experience of Chrome users once a week. Sign up and this data is fetched automatically every week for your registered sites; speed-up and slowdown events, and how they correlate with your Google rankings, are tracked in the Core Web Vitals section of your panel.