An image processing device includes an accumulating unit an information deleting unit and an information updating unit. The accumulating unit accumulates image information of a plurality of pages as a multipage file, wherein the multipage file includes identification information associated with the image information of each of the pages. The information deleting unit deletes image information of any page of the multipage file. The information updating unit updates, when image information of one or more of the pages of the multipage file has been deleted by the information deleting unit, identification information corresponding to the image information of the deleted page.