An image editing apparatus is configured to determine two or more scheduled disposition regions in a predetermined region on a printing plate or an output medium, and to gang two or more content images for the respective disposition regions. The apparatus includes: a ganging information managing unit that sequentially manages first list information regarding plural print jobs and second list information regarding assignment states of the print jobs; a job assigning unit that assigns the disposition regions to at least one print job; a ganging state monitoring unit that sequentially monitors the first and second list information and determines whether there is at least one combination of the print jobs which have not been assigned and the disposition regions; and a monitoring result informing unit that informs a user of there being the combination in a case where the ganging state monitoring unit determines that there is the combination.