Set Workbook Thumbnails

Data authors can show or hide the thumbnail for an individual workbook on a page. Hiding a workbook thumbnail can be useful for protecting sensitive data from being exposed to users that don't have the same access as the data author.

Note:

Your administrator controls whether or not thumbnails are allowed. If thumbnails are disabled, thumbnails never display, that is, this setting is always “Off”. See Security Options.
  1. On your home page, hover over a workbook, click Actions, and select Open.
  2. Click the workbook Menu, then select Workbook Properties.
  3. In the General tab, set Save thumbnails to On to display a thumbnail for the workbook on the page or Off to hide it.
  4. Click Save.