13. The device of claim 12 , wherein the memory stores instructions causing the processor, after execution of the instructions by the processor, to: determine the print charges based on a per text page rate for text and a per image page rate for non-text objects.
12. The device of claim 7 , wherein the memory stores instructions causing the processor, after execution of the instructions by the processor, to: based on the reference page numbers and fractional page numbers, determine print charges for the digital document, estimate bandwidth for transmitting the digital document, or determine the type of content of the digital document.