- 1 or more screenshots of your app: One side has to be at least 528 pixels and the largest your screenshot can be is 2000 by 2000 pixels
- 1 app icon: Must be square, be at least 240 by 240 pixels, and not greater than 2000 by 2000 pixels
- 1 promo image: Must be square, at least 528 by 528 pixels, and not greater than 2000 by 2000 pixels
Note: In preparation for a retina compatible future, all images that you upload will be displayed at half the resolution that you provide. For example, a 240 by 240 pixel icon will actually be displayed as 120 by 120 pixels. We recommend uploading high resolution images so your page looks great on retina displays.