PageSpeed

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

Mobile vs Desktop Comparison

The mobile and desktop experience of the same site is often two different stories: a slow network and a weak processor on mobile, a wide screen and strong hardware on desktop. This tab puts the CrUX data for both device classes side by side and makes it clear which side deserves your resources.

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

Two composite scores

A separately calculated composite score for mobile and desktop, plus a 'Faster' badge.

Metric differences

The gap between devices on LCP, INP, CLS and FCP, and which metric breaks where.

A priority decision

Google indexes mobile-first; if your mobile score is low, your priority is settled.

Trend information

The direction of both devices against the baseline period; one may improve while the other slips.

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.