Publisher ad-experience intelligence
Find publishers whose ad experience is heavy or getting worse.
AdTax Radar ranks ad-supported websites by Google’s real-user Chrome data on ad count, ad density, ad CPU and ad network weight. Each site is compared with its category peers, and you see the evidence behind every ranking. Ad-ops agencies and monetization consultants use it to choose who to call next.
- 237/248
- pilot publishers with ad metrics (phone)
- 4
- CrUX ad metrics, phone & desktop separately
- 28-day
- real-user windows, refreshed daily
- 10
- publisher categories benchmarked
Real-user data, not lab guesses
Since September 2026, Google’s Chrome UX Report includes ad metrics collected from real Chrome visits: how many ads are in view, how much of the screen they cover, and how much CPU and network data they use.
Ranked against true peers
A recipe blog is compared with other recipe blogs, phone with phone and desktop with desktop. Scores are percentiles within the category, so a site doesn’t rank high just because its whole category runs heavy ads.
Change you can trust
Trends compare 28-day windows that share no days, so you see real movement, not overlapping averages. Every ranking shows its metric values, peer percentiles and collection dates.
From the pilot dataset
Heaviest categories by median ad CPU (phone)
| Category | Sites | Ad Count (median p75) | Ad Density (median p75) | Ad Weight: CPU (median p75) | Ad Weight: Network (median p75) |
|---|---|---|---|---|---|
| Recipes & food | 29 | 1.16 | 13% | 9.6 s | 7.7 MB |
| Lifestyle & health | 31 | 1.16 | 13% | 8.2 s | 4.5 MB |
| Tech | 21 | 1.77 | 16% | 7.5 s | 6.3 MB |
| Entertainment | 25 | 1.44 | 15% | 7.2 s | 9.9 MB |
| Auto & travel | 10 | 1.08 | 12% | 7.0 s | 3.8 MB |
Origin-level p75 values, collection period 2026-09-17 to 2026-10-14. Contains data from Chrome UX Report, Google, CC BY 4.0.
What we don’t claim
Heavy ads aren’t the same as bad monetization, and we don’t estimate anyone’s revenue or losses. AdTax Radar shows where ad experience is measurably heavier or getting worse than peers, which is a good reason to start a conversation, and nothing more.