A program implemented in an information processing device obtains a plurality of pieces of image data and an area size of an arrangement area. When images indicated by the plurality of pieces of image data are arranged within the arrangement area and when the obtained images are arranged, the program determines whether the images are appropriately arranged, and, in response to determining that the images are arranged appropriately, arranges the images. Then, the program generates arranged image data representing the plurality of arranged images arranged in the arrangement area.