A reading apparatus includes a storage configured to store data in the storage, a reader configured to optically read a medium, and a processor configured to, in response to the reading of the medium by the reader, acquire a set of read data based on the result of the reading, generate an image file based on the acquired set of read data, and allow the storage to store in itself the generated image file. Further, the processor includes the function of, when generating the image file, generating a plurality of image files resulting from a division that allows the file size of each of the plurality of image files to be smaller than a size upper limit, and of allowing the storage to store in itself the generated plurality of image files in a state in which the plurality of image files are associated with one another.