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We just launched experimental ad metrics in the Chrome User Experience Report (CrUX): - Ad Count - Ad Density - Ad Weight: Network - Ad Weight: CPU These metrics are a set of ad-related measurements that provide transparency into sites' ad experiences. developer.chrome.com/blog/crux-ad... 1/8 🧵

Ad Count is the average number of ads in the viewport. Ad Density is the average % of the viewport area occupied by ads. Ad Weight: Network is the total network KB fetched by ad scripts and frames. Ad Weight: CPU is milliseconds of CPU time used by ads frames. developer.chrome.com/docs/ads 2/8

The metrics are available in the CrUX API and the CrUX History API today and you can view these metrics for sites with third-party ads in CrUX Vis: cruxvis.withgoogle.com We're working on adding them to CrUX BigQuery dataset. 4/8

Will this data get integrated into PageSpeed Insights and the PageSpeed API?

We've heard from a large cross-section of ad ecosystem stakeholders that these metrics could enhance how they value ad opportunities and make ad product decisions. We're encouraged by this as we think users ultimately benefit from more collective attention paid to tuning web ad experiences. 5/8

While inspired by Core Web Vitals, which help provide visibility into websites' speed, responsiveness and visual stability, CrUX ad metrics are not part of Core Web Vitals and don't have suggested targets or thresholds. 6/8

I couldn't immediately see a way to view these on mobile, but switching to desktop mode does give me the side navigation.

That maybe-not-so-obvious little star button menu is the key: