Google's Page Experience docs now list CrUX ad metrics

What did Google add to the Page Experience documentation?#

Google’s page experience documentation now lists CrUX ad metrics in its Page experience resources section, alongside Core Web Vitals guidance, the HTTPS report, intrusive interstitials guidance and Lighthouse. Barry Schwartz of Search Engine Roundtable reported the change on 22 September 2026.

The documentation describes them as experimental CrUX metrics from Chrome that can help you understand your site’s ad count, ad density and ad weight. It adds that they provide insight into real users’ ad experiences on your site, as seen and reported by Chrome.

What do the four ad metrics measure?#

The listing links to Chrome’s ad measurements documentation, which defines each one:

• Ad Count describes how many ads a typical user is seeing at once on the site.
• Ad Density describes a typical user’s balance of content and advertising visibility.
• Ad Weight: CPU describes the CPU consumption by ads, which can impact performance.
• Ad Weight: Network describes the network resources consumed by ads, which can impact performance.

Chrome publishes them through the Chrome UX Report and calls them experimental. The data can be viewed in CrUX Vis for eligible origins, and Chrome’s documentation has separate pages on how ads are detected and on the methodology behind the numbers.

Are the CrUX ad metrics a ranking signal?#

Google did not say they are. Schwartz reports that the documentation does not present them as a specific ranking signal for search. John Mueller of Google said they were included because they are available as metrics to help evaluate the state of a site, and that not everything is a direct search ranking factor.

The same documentation says there is no single page experience signal: Google’s core ranking systems look at a variety of signals that align with overall page experience. It says Core Web Vitals are used by its ranking systems, but that relevance still matters most. That statement is about Core Web Vitals, not the ad metrics.

What should site owners do with this?#

Nothing in the sources requires a change. The metrics are a place to look if your pages carry ads and you want a view of how much they add. They also map onto a question already in Google’s page experience self-assessment: does your content avoid using an excessive amount of ads that distract from or interfere with the main content?

A practical order of work is to check your Core Web Vitals first, since those are the documented ranking input, for example with our Core Web Vitals checker. Then look up your origin’s ad metrics in CrUX Vis to see whether ad weight could explain slow pages. Because the metrics are labeled experimental, expect the definitions or availability to change, and do not build a ranking case around them. For how Google’s page experience guidance reached this point, see our page experience update timeline.