An inspection device includes a processor configured to display at least one of plural pieces of read image data on a display unit in a state where a defective portion is recognizable, and set reception of a correction instruction of the defective portion to be enabled, the plural pieces of read image data being obtained by reading image-formed matters obtained by forming original image data on plural recording media, and correct read image data that does not satisfy a predetermined criterion, and then register the corrected read image data as reference image data used for inspecting the image-formed matter.