Google Chrome is introducing new experimental metrics to measure how ad-heavy websites feel to users.
The metrics are being added to the Chrome User Experience Report (CrUX), which is based on real-world Chrome usage data.
Chrome will measure four new signals:
Ad Count – average number of ads visible on screen.
Ad Density – percentage of the viewport occupied by ads.
Ad Weight – Network – how much data ads consume.
Ad Weight – CPU – how much processing power ads use.
Chrome identifies ads through network filtering and analysis of ad-related scripts and frames.
Ad count and density are sampled every second, while network and CPU usage are measured over the user session.
For advertisers, the metrics could help identify cluttered or low-quality inventory where excessive advertising may hurt attention and campaign performance.
Publishers with cleaner ad experiences could potentially use the data to demonstrate higher-quality inventory.
The metrics are currently experimental, are not part of Core Web Vitals, and Google has not introduced recommended thresholds or confirmed that they will affect bidding or inventory valuation.
