On semana.com, advertising and tracking add ≈ 30,458 g CO₂ per million pageviews (25,668 g from ad-serving alone) — 5.8× the index average, cleaner than 3% of the sites we measure.
Ad-relevant
30458
g CO₂ / 1M pageviews
Ad-serving only
25668
g CO₂ / 1M pageviews
365
kg CO₂ / year at 1M pageviews per month
3
% cleaner than the DACH index
16
% 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 →