Site speed (PageSpeed)

Every site gets a daily speed test from Google PageSpeed Insights, the same tool at pagespeed.web.dev, on both mobile and desktop. Open a site and choose Performance.

What you’ll see

• Score (0–100) for mobile and desktop. Green 90+, orange 50–89, red under 50: Google’s own bands.
• Lab measurements from that test, each marked Good, Needs work or Poor using Google’s thresholds (table below).
• Real visitors (Core Web Vitals): what actual Chrome users experienced over the last 28 days, when Google has enough visits to report. Small sites often don’t; then this section doesn’t show. If the page itself doesn’t have enough data, the whole site’s numbers are used and it says so.
• Biggest wins: the changes Google estimates would help most on mobile, with the time they’d save.
• Score history for 90 days, mobile and desktop. The chart starts once there are tests on two different days.
• Every test: a table of every test in the last 90 days, newest first, with both scores and the main mobile measurements. Click a row to see that test in full, including what Google suggested fixing at the time. Show more loads older tests.

The measurements

When it runs

• Daily at 08:20 UTC (4:20 AM Eastern) for every site with tests on. The page shows when the next test is. A new site shows First test with the date and time until its first one runs.
• Test now runs it immediately. It takes about a minute at Google’s end; refresh to see results.
• At the bottom of the page: switch daily tests off, or test a different page (for example /shop).

Score drops

If a site’s mobile score is 10 or more points below its average of the last 7 tests, the Inspector logs it (category Performance), it appears in your morning report, and:

• Rules can react: trigger A site’s mobile speed score drops 10+ points. See Rules reference.
• Webhook performance.dropped. See Webhooks.

A drop the morning after updates is a strong hint which update did it. Check the site’s Log.

If a test fails