An image output device according to the present disclosure includes: an image acquisition unit that acquires an image with a first resolution; a high-resolution image acquisition unit that acquires an image with a second resolution, being an image of higher resolution than the image with the first resolution; an enlargement input unit that accepts input of an enlargement ratio; a determination unit that determines whether or not an evaluation score determined based on the accepted enlargement ratio is higher than a certain value; and a transmission unit that transmits the image with the second resolution if the evaluation score is determined to be higher than the certain value, and does not transmit the image with the second resolution if the evaluation score is determined not to be higher than the certain value.