An image information processing device has a controller which is configured to display images represented by the image files included in a target image group selected by a user on the display unit sequentially at particular switching intervals. The controller detects whether one of a plurality of specific flick operations is performed during execution of the switching-displaying process. When it is determined that one of a plurality of specific flick operations is performed, one of the plurality of associated processes to be applied to an image which is currently displayed on the display unit is executed.