Image dimensions (Desktop):
728x90*, 300x250*, 160x600* (standard sizes)
120x600, 300x600
Image dimensions (Mobile):
320x50*, 300x50* (smartphone banner, most common)
320x480, 480x320 (smartphone interstitial)
300x250* (mobile interstitial, tablet in-app, mobile web)
728x90* (tablet only)
1024x768, 768x1024 (tablet interstitial)
File size (KB): 200 KB max for each image.
File type: JPG, GIF, PNG, HTML5
Animation length: No more than 15 seconds and/or 3 loops
Border: Creative must clearly separated from the site content, either by a clear border or a non-white background color.
*Recommended Ad Sizes
Additional supported ads sizes: 120x20, 168x28, 180x150, 216x36, 234x60, 250x360, 300x50, 300x170, 300x340, 300x1050, 320x240, 320x320, 336x280, 386x300, 400x300, 468x60, 480x360, 480x800, 600x400, 631x385, 640x480, 700x450, 750x200, 970x90, 970x250, 980x120, 980x150, 990x200