A printing system for one- or two-dimensional barcodes, and a method and program of creating virtual fonts for such barcodes enable the font and output parameters of the font to be easily changed. The printing system for printing one- or two-dimensional barcodes has a host computer and a printer in communication therewith. The host computer has an application program for creating text data containing a one- or two-dimensional barcode and a printer driver for converting the text data to commands and for sending the commands to the printer. The printing system also has a virtual font configuration program for defining a virtual font linking one- or two-dimensional barcode font data of the printer driver with parameter values configuring the corresponding barcodes.