On ouest-france.fr, advertising and tracking add ≈ 155 g CO₂ per million pageviews (0 g from ad-serving alone) — 0.0× the index average, cleaner than 83% of the sites we measure.
Ad-relevant
155
g CO₂ / 1M pageviews
Ad-serving only
0
g CO₂ / 1M pageviews
2
kg CO₂ / year at 1M pageviews per month
83
% cleaner than the DACH index
100
% 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 →