On tsn.ca, advertising and tracking add ≈ 10,834 g CO₂ per million pageviews (6,668 g from ad-serving alone) — 2.1× the index average, cleaner than 14% of the sites we measure.
Ad-relevant
10834
g CO₂ / 1M pageviews
Ad-serving only
6668
g CO₂ / 1M pageviews
130
kg CO₂ / year at 1M pageviews per month
14
% cleaner than the DACH index
38
% 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 →