A print control device, controlling a printing device (capable of color printing and monochrome printing) to make the printing device print an image corresponding to print target data. The print device includes a main data color/monochrome judgment unit which judges whether main data (included in the print target data which is made up of the main data and attached data) is color data when the print target data is specified, and a color restriction print control unit which makes the printing device execute the printing of the image corresponding to the print target data by the color printing when the main data is judged to be color data by the main data color/monochrome judgment unit, while making the printing device execute the printing by the monochrome printing irrespective of whether the attached data is color data or not when the main data is judged not to be color data.