On subito.it, advertising and tracking add ≈ 5,282 g CO₂ per million pageviews (1,126 g from ad-serving alone) — 1.0× the index average, cleaner than 30% of the sites we measure.
Ad-relevant
5282
g CO₂ / 1M pageviews
Ad-serving only
1126
g CO₂ / 1M pageviews
63
kg CO₂ / year at 1M pageviews per month
30
% cleaner than the DACH index
79
% 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 →