Abstract: Disclosed is a method for improving computer aided graphical design with a design rule checker. A preferred embodiment of the invention is a computer program which when loaded in a computer checks a graphical design for conformity to a set of graphical design rules such as printability rules, legal packaging rules, company style rules, and aesthetic rules. The program may be operated in an interactive mode to provide feedback while a design is being created, or in a batch mode after the design is completed. Specific rules can be customized and adapted for appropriate printing processes, company styles, legal rules, and aesthetics.