Experimental Core Web Vitals that count in-app page changes are now in the Chrome UX Report, with Search Console set to follow.

Chrome has announced experimental versions of all three Core Web Vitals in the Chrome User Experience Report (CrUX). These metrics count soft navigations, which refer to the in-app page changes a single-page application (SPA) makes without a full reload. They’re available in BigQuery, the CrUX API, and the History API as of the release published October 13, and CrUX Vis now includes a toggle to show them.

About 70% of origins in CrUX have little or no soft navigation traffic, so most sites probably won’t notice much of a difference. Sites that rely heavily on soft navigations are most likely to see a change, and their experimental scores tend to be higher.

Google’s stable scores are unchanged at this time. Chrome aims to conclude the metrics’ experimental status in May 2027, subject to the feedback it receives. Chrome says Search Console will adopt the new data once that happens.

There have been three new fields added to CrUX, experimental_largest_contentful_paint_with_softnavs along with one each for INP and CLS. They track the exact same measurements as the stable versions of those fields; however, they count both hard loads and detected soft navigation events.

Prior to the inclusion of soft navigation tracking, CrUX only measured an SPA’s first load. Subsequent in-app changes were grouped together with that first load, all interactions and layout shifts attributed back to the landing URL. With the ability to detect and record soft navigation events, every time a user’s actions cause a change in both content and URL it is tracked individually, and the associated metrics are provided under the destination URL subject to the normal eligibility criteria.

Source link