Glossary/Adtech & Programmatic/IAB Standard Ad Sizes
Adtech & Programmatic
IAB Standard Ad Sizes
Common display dimensions defined by the IAB, such as 300x250 medium rectangle, 728x90 leaderboard, 160x600 skyscraper, and 320x50 mobile banner.
By Brandon Mina·CEO, BrandPilot AI·Updated November 2026
Short answer
IAB standard ad sizes are common display ad dimensions defined by the Interactive Advertising Bureau, such as the 300x250 medium rectangle, 728x90 leaderboard, 160x600 skyscraper, and 320x50 mobile banner. Standardized sizes let advertisers build one set of creatives that can run across many publishers, simplifying production and programmatic buying.