An inspection device that inspects eligibility of a subject image, the inspection device including a hardware processor and a recording medium including instructions that when executed by the hardware processor cause the inspection device to: acquire the subject image and a reference image corresponding to the subject image; acquire a judgment criterion indicating a range of eligibility for differences between images; detect a difference between the subject image and the reference image; and when the difference is detected, judge eligibility of the subject image by determining whether or not the difference is included in the range indicated by the judgment criterion.