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User guide3 min

Performance

Three tabs. Resources lists every file your pages load and comes from the crawl. The other two are Google's measurements, and need a PageSpeed key before they show anything.

How to get there#

Explore → Performance.

  1. 1

    Open Performance in the sidebar

    After Images.

  2. 2

    Start on Resources

    It always has data. The other two need an API key - see the warning below.

app.pixyscan.com/w/…/s/…/performance

The Performance screen's Resources tab: tiles for files recorded, broken files, not probed and answered under 400, then a table of page, file, type, bytes and status with filter chips for CSS, JS and fonts.
The Resources tab: every stylesheet, script and font the crawl found, and the page that loaded it.

The three tabs#

One comes from the crawl, two come from Google.

FieldSourceWhat it does
ResourcesThe crawlEvery file each page loads, with its URL, type, size and status. The tiles count files recorded, broken files, files not checked, and files that answered successfully.
Core Web VitalsPageSpeed InsightsLCP, INP, CLS and TTFB for each page, rated against Google's own thresholds. Measured in a lab, sampled each scan.
Chrome UX ReportCrUXReal measurements from Chrome users, where Google has enough of them. A site with little traffic will have none, which is normal.

If everything says Not measured#

The API key is missing, not your site.

Vitals need a PageSpeed API key

Google does not accept anonymous requests, so with no key saved both vitals tabs read “Not measured”. Add one under Workspace settings → PageSpeed reports, or give a single site its own key in its settings. The Resources tab works either way.

Reading the Resources table#

Each row is one file on one page.

A shared bundle appears once for every page that loads it. Sort by size to find files worth splitting, or filter by type to see how much JavaScript you are shipping. Any status other than 200 is a file the browser asked for and did not get.

Nothing here affects the score directly

Every figure on this screen is a measurement or a status code. Four checks read these numbers, and those appear on Issues, which is where they affect the score.

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