Abstract: Methods, systems and techniques for in-process font activation are described herein. According to various illustrative aspects, fonts for a job in process may be activated by a plug-in or other adaptive or extensible font module. The font module may be configured to conform to an application programming interface (API) of the document creation system in question (e.g., Adobe InDesign, Illustrator, InCopy; Quark XPress, CopyDesk, etc.). A job jacket is maintained that identifies a document for output along with all fonts necessary to create the desired output. During the print process, all identified fonts are activated in-process (i.e., during the print process). When a font is activated, either globally or in the local process space, the font module overwrites the previously activated font in memory in the local process space.