1. An image file generation device comprising: an image hierarchy generation unit configured to generate a plurality of pieces of image data with different resolutions from input image data and generate hierarchical data formed by hierarchizing the plurality of pieces of data as layers according to resolution; an image division unit configured to divide image data at each layer of the hierarchical data into tile images of predetermined sizes; a tile image reference table creation unit configured to create a tile image reference table that maps post-division areas in the image data at each layer of the hierarchical data to data for tile images used to render the areas; and an image file generation unit configured to generate an image file that includes data for the tile image and the tile image reference table.