Provided is an image editing device that enables a user to easily assign images to a plurality of pages constituting an album or the like so as to satisfy editorial restrictions. In the image editing device: image data acquisition means (42) acquires a plurality of pieces of image data; page assignment means (43) determines, based on respective photographed times of the plurality of pieces of image data and a reference time interval, details of an assignment of the plurality of pieces of image data to each of the plurality of pages so that an interval between photographed times of pieces of image data to be assigned to the each of the plurality of pages is the reference time interval or smaller; and page image output means (44) outputs image output data on the each of the plurality of pages based on a result of the assignment. The page assignment means (43) changes the reference time interval, to thereby determine the assignment that satisfies at least a part of a condition for a number of pages of the plurality of pages and a condition for a maximum number of pieces of image data to be assigned to the each of the plurality of pages.