In Sommer 1990 my colleague Chuck Weger has presented the concept and the term “Preflight” for the first time. 1993 the application FlightCheck from Markzware was introduces, which could check files of layout applications (Aldus PageMaker, QuarkXPress, later Adobe InDesign).
The first preflight tool for PDF was devloped by Enfocus. Later Callas pdfInspektor, which is now part of Callas pdfToobox, was added. In 2002 the PDF/X-3 Inspector (Freeware) for Acrobat 5 was released which made creating and checking of the ISO standard PDF/X-3 possible. In April 2003 Adobe has implemented a preflight feature based on the Callas pdfInspector in Acrobat 6. Also in the latest Acrobat version the preflight feature is provided by Callas.