An image forming apparatus having a function for binding a plurality of sheets, both sides of each of which have been printed, and outputting a booklet-shaped print, the image forming apparatus including: a shifting section which shifts drawing information to be printed on each page of at least one set of spread two pages of the booklet-shaped print so that the drawing information is separated from a bound position; and a synthesizing section which synthesizes drawing information near a bound side of one page of the two pages, information based on the drawing information, or predetermined background information, in a blank portion formed by a shift on a bound side of an other page of the two pages.