Job Definition Format. The overall name of CIP4's primary process automation specification.

There is also a JDF element, which is a top-level element within JDF that encompasses a node (see "Node" below.) JDF's basic functions are to provide metadata that can be used to describe the entire lifecycle of a print job, provide a method for automating flexible workflows, enable workflow or MIS systems to query new devices to determine their JDF capabilities, and to provide a command and control language that allows workflow or MIS systems to direct devices on the shop floor.