A system is provided for proofing electronic documents delivered over a network. The system comprises a plurality of electronic documents in portable document file format, a computer connectable to the network for receiving the plurality of portable format documents together with at least one associated proofer identifier, a program executing on the computer for assigning a version number to each of the plurality of received portable format documents, and a database accessible by the computer for storing the documents and associated version numbers. The computer for receiving a request, from a proofer presenting the proofer identifier, to review a portable format electronic document, and the program for retrieving and formatting the requested document for display.