To upload images to a custom dashboard
Purpose
You can add a logo to a custom dashboard. Images can be saved to the analytics server.
Image files can be in any of the following formats:
For custom dashboards, the images are not auto-scaled to 80 pixels as they are when used in the pre-packaged reports. You must size the image dashlet as desired.
You cannot add an image to a custom report, but you can create a custom dashboard with an image and add one or more ad hoc reports.