On elle.com, advertising and tracking add ≈ 31,502 g CO₂ per million pageviews (24,782 g from ad-serving alone) — 6.0× the index average, cleaner than 2% of the sites we measure.
Ad-relevant
31502
g CO₂ / 1M pageviews
Ad-serving only
24782
g CO₂ / 1M pageviews
378
kg CO₂ / year at 1M pageviews per month
2
% cleaner than the DACH index
21
% 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 →