This topic explains how to upload images to a mobile website.
You can upload the following images to a mobile website:
Header (maximum size is 150 pixels wide by 45 pixels high)
Background Image (maximum size is 700 pixels wide by 750 pixels high)
Shortcut Icon (maximum size is 120 pixels wide by 120 pixels high)
Footer (HTML or archived HTML, image is automatically resized)
Go to Setup - Website Definitions - B2C - UI Design - Mobile.
Next to each image field, click the Browse button, select your image, and then click Upload.
Click Save.