Insights
Approximate web vitals
Loading, responsiveness and layout shift measured on your own visitors, per page and per variant, and labelled approximate.
The snippet measures LCP, INP and CLS on real visits and reports them at the 75th percentile on the overview, per page type or template on Pages, and per variant against control in Diagnose.
They are labelled approximate in the product because they are measured by the snippet rather than taken from Google’s field data, and they will not match those figures exactly.
Open a speed figure to see its 50th, 75th and 95th percentiles and the slowest templates. A vital needs 100 samples to be shown and 1,000 in each period before a change is called real.
Per variant, the figures catch a test that slowed the page down: a variant that lost may simply have loaded later than control.