Type a domain to measure its ad-carbon
In seconds: how heavy a site's ads and trackers really are — and how much of that weight is hidden tracking, not the ads themselves.
What the ad-tech on a homepage costs
of that footprint isn't the ads — it's tracking, tag managers and consent banners running in the background.
more ad-carbon on a news homepage than a government one — ad-complexity, not page weight, drives it.
the heaviest homepage we measure, moneycontrol.com — about 14× the average per million views.
The same web, a 12× difference
Ad-funded content loads dozens of ad-tech partners; public-service sites load almost none. Per million pageviews, ad-relevant CO₂:
Measure any site above to see where its sector lands across all eight categories.
Same kind of site, very different ad-carbon
One news or sport homepage per country — ad-relevant CO₂ per million pageviews. The spread comes from how many ads load and how clean each country’s electricity grid is.
Every figure is estimated from public page-load data, on the live grid.
We classify each site’s advertising-and-tracking requests from public HTTP Archive data, then convert the bytes to CO₂ on the live per-country electricity grid. It’s an estimate of a site’s ad-tech footprint — not a measured campaign figure. See the full methodology →
Ad-carbon, explained
How is the Ad-Carbon Index measured?
We classify the advertising-and-tracking requests on each homepage from public page-load data, then convert the bytes to CO₂ on each country’s live electricity grid. It’s an estimate of a site’s ad-tech footprint, not a measured campaign figure.
What does “consent-domain” mean?
A consent-domain is a site whose advertising and tracking load only after its cookie consent wall, so its full footprint can’t be measured from public crawl data — the public, pre-consent view shows near-zero.
Want to get more insights? Read our blog.
Discover trends, statistics and relevant facts in sustainable advertising — across ad carbon, media measurement and tracking.
