1. A system adapted to render an image file that represents an image for output by a printing device, the printing device having a predetermined halftone including halftone thresholding arrays used to convert color value information into binary pixel-based information, the system comprising: an input module that obtains a page description of an image to be output by the printing device; a mask detection module that detects the presence of one or more binary level masks in the page description, wherein each of the one or more binary level masks is designed to impart a corresponding transparency level to one or more objects in the page description; a level determination module that determines the one or more corresponding transparency levels of the one or more detected binary level masks; a custom mask module that obtains one or more binary custom masks that correspond to the same one or more transparency levels as the one or more detected binary level masks, wherein the one or more binary custom masks are designed based on the predetermined halftone of the printing device; and a mask replacement module that replaces the one or more binary level masks in the page description with the corresponding one or more binary custom masks.