IAB banner specs
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Animated banners (animated GIFs) can loop only three times, and the total animation can’t exceed 15 seconds. Repetitive or rapid flashing, blinking in excess, or visually stressful animations aren’t allowed.
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Assets may only be produced as JPEG, GIF, or PNG.
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Advertisers must provide assets that are at least 2x the pixel dimensions (for example, IAB 320 x 50 asset requirements would be 640 x 100).
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For use of third-party ad tags, see Third-party ad tag technical specs.
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See maximum file sizes below:
- IAB 320 x 50: 2 MB
- IAB 300 x 250: 9 MB
- IAB 320 x 320: 12 MB
- IAB 300 x 600: 20 MB
- IAB 728 x 90: 8 MB
- IAB 970 x 250: 27 MB
