39%
of the median page weight comes from ads and trackers
On a median ad-supported web page, ad creatives, ad SDKs and tracking scripts account for around 39% of total bytes transferred.
Context
Removing this overhead can cut total downloads by a third or more, with proportional savings in CPU, battery and mobile data. The effect is most dramatic on news, gossip and recipe sites.
Methodology
HTTP Archive analysis of top 10k pages, comparing baseline vs ad/tracker-stripped loads.
Key takeaways
- Ads are often the single largest non-content payload on a page.
- Blocking ads reduces page weight more than image optimization on most sites.
Sources
Cite this statistic
NovaBlock (2026). "39% — of the median page weight comes from ads and trackers." Retrieved from https://novablock.app/statistics/page-weight-ads