A printing system includes an image forming apparatus capable of performing visible printing and invisible printing and a terminal apparatus. The terminal apparatus includes first circuitry. The first circuitry adds a printing command instructing to invisibly print an image of a two-dimensional code obtained by two-dimensionally encoding a print target image to print data generated based on the print target image. The first circuitry transmits, to the image forming apparatus, the print data to which the printing command is added. The image forming apparatus including second circuitry. The second circuitry visibly prints the print target image based on the print data transmitted from the terminal apparatus, and invisibly prints the image of the two-dimensional code according to the printing command added.