On index.hu, advertising and tracking add ≈ 18,737 g CO₂ per million pageviews (16,761 g from ad-serving alone) — 3.6× the index average, cleaner than 7% of the sites we measure.
Ad-relevant
18737
g CO₂ / 1M pageviews
Ad-serving only
16761
g CO₂ / 1M pageviews
225
kg CO₂ / year at 1M pageviews per month
7
% cleaner than the DACH index
11
% of the footprint is tracking overhead, not ad-serving
Measured on the live electricity grid from public page-load data — an estimate of a site's ad-tech architecture, not a measured campaign figure. See the methodology →