All channels
Advertise on Britannica.com
Reach Britannica.com's readers with data-driven, programmatic advertising. We choose the right formats, the right context and the right audience.
Impressions (2 weeks)
96 milj
Ad formats
29
Platforms
britannica.com
Ad formats on Britannica.com
300x50
Display
13 %
320x50 - Mobile
Mobil
13 %
320x100 - Mobile
Mobil
11 %
300x100
Display
10 %
300x250 - Sidekick
Display
10 %
250x250 - Square
Display
9 %
320x250 - Mobile
Mobil
6 %
336x280 - Large Rectangle
Display
5 %
120x240 - Vertical Banner
Display
5 %
468x60 - Banner
Display
4 %
300x300 - Banner
Display
4 %
320x300
Mobil
3 %
Share of the channel's ad inventory, August 2026.