On kmart.com.au, advertising and tracking add ≈ 22,164 g CO₂ per million pageviews (1,810 g from ad-serving alone) — 4.2× the index average, cleaner than 5% of the sites we measure.
Ad-relevant
22164
g CO₂ / 1M pageviews
Ad-serving only
1810
g CO₂ / 1M pageviews
266
kg CO₂ / year at 1M pageviews per month
5
% cleaner than the DACH index
92
% 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 →