A printing system includes a printer performing a printing operation on a printing medium; and an information processor transmitting print information used for the printer to perform the printing operation on the printing medium, wherein the printer includes supporting means for supporting the printing medium for the printing operation and printing means for performing the printing operation on the printing medium on the basis of the print information, wherein the information processor includes editing information processing means for generating or processing editing information on the edition of a layout of the printing medium as information for performing the printing operation on the same printing medium by plural times, display means for displaying the editing information generated or processed by the editing information processing means, and print information generating means for generating the print information on the basis of the editing information when a user requests for performing the printing operation.