Interactive Advertising Bureau
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The IAB specifies Ad Unit Guidelines.
The sizes including the Universal Ad Package sizes can be seen at: http://www.iab.net/iab_products_and_industry_services/508676/508767/Ad_Unit
| Name | width (in pixels) | height (in pixels) | aspect ratio | source |
|---|---|---|---|---|
| Large rectangle | 336 | 280 | 1.2 | IAB |
| Medium rectangle | 300 | 250 | 1.2 | IAB/UAP |
| Square pop-up | 250 | 250 | 1 | IAB |
| Vertical rectangle | 240 | 400 | 1.67 | IAB |
| Rectangle | 180 | 150 | 1.2 | IAB/UAP |
| Leaderboard | 728 | 90 | 8.09 | IAB/UAP |
| Full banner | 468 | 60 | 7.8 | IAB |
| Half banner | 234 | 60 | 3.9 | IAB |
| Button 1 | 120 | 90 | 1.33 | IAB |
| Button 2 | 120 | 60 | 2 | IAB |
| Micro bar | 88 | 31 | 2.84 | IAB |
| Micro button | 80 | 15 | 5.33 | |
| Vertical banner | 120 | 240 | 2 | IAB |
| Square button | 125 | 125 | 1 | IAB |
| Skyscraper | 120 | 600 | 5 | IAB |
| Wide skyscraper | 160 | 600 | 3.75 | IAB/UAP |
| Half-page | 300 | 600 | 2 | IAB |