On record.pt, advertising and tracking add ≈ 10,621 g CO₂ per million pageviews (7,444 g from ad-serving alone) — 2.0× the index average, cleaner than 15% of the sites we measure.
Ad-relevant
10621
g CO₂ / 1M pageviews
Ad-serving only
7444
g CO₂ / 1M pageviews
127
kg CO₂ / year at 1M pageviews per month
15
% cleaner than the DACH index
30
% 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 →