When a user uploads an image to use as an App logo, the App Store code appears to be changing the resolution of the image.
For example, I recently uploaded an image file to use as the logo for "Super Simple IGB App." The image file I uploaded was 71 Kb and 71 DPI.
However, the file that got stored in S3 bucket after the upload was only 4.3 kb.
Also, when the image is shown in my browser, it looks very low resolution and blurry.
This would be very disappointing for App developers. Images when displayed on an App's page should be high resolution and should look at least as good as the original image uploaded from the user's desktop.