| dimension | maximum size | expansions | formats | |
| Leaderboard | 728 x 90 IMU | < 40Kb | 728 x 500 (down) | JPG, GIF, SWF*, HTML |
| Skyscraper | 160 x 600 IMU | < 40Kb | 500 x 600 (left/right)*** | JPG, GIF, SWF*, HTML |
| Large rectangle | 300 x 250 IMU | < 40Kb | 300 x 500 (down) | JPG, GIF, SWF*, HTML |
| Square | 160 x 160 IMU | < 40Kb | JPG, GIF, SWF*, HTML | |
| Video | 640 x 360 / 640 x 480 | < 30 seconds | MOV, AVI, MP4, FLV | |
| Takeover | all units | < 70kb | JPG, GIF, HTML | |
| Microsite | Fit in 900 x 800 | < 190kb | JPG, GIF, SWF*, HTML | |
| Newsletter | Fit in 700px wide | < 70kb | JPG, GIF, HTML | |
| Survey | Fit in 900 x 800 | < 25 pages | JPG, GIF, HTML | |
| Polls | dimensions vary | size vary | ||
| Custom ** | dimensions vary | size vary | ||
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* - For SWF tracking, the links should be formatted as follows: getURL(clickTAG, "_blank"); We will also need a backup GIF or JPG file of 40Kb max. ** - Please see Case Studies for custom examples *** - Direction depends on the targeted publisher. |
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