An image processing device for arranging and printing images of a plurality of documents on a single recording sheet includes a memory part configured to memorize: image information and sizes of documents, a size of the single recording sheet, and a number of the documents; an input part configured to input image information, a document size detecting part configured to detect sizes of the documents; and an editing part configured to compare the sizes of the documents with a divided area of the single recording sheet. The editing part is further configured to arrange and print the image information of one of the documents on the single recording sheet without reducing the image of the one of the documents when the size of the document is equal to or less than the size of the divided area of the single recording sheet.