PDF Reference Documentation

The PDF specification was first published when Acrobat products were first introduced in 1993. Since then, updated versions of the PDF Reference have been made available from Adobe via the Web. A significant number of third-party developers and systems integrators offer customize enhancements and extensions to Adobe's core family of products. Adobe publishes the PDF specification to encourage the development of such third-party applications.

The PDF Reference provides a description of the PDF file format and is intended primarily for application developers wishing to develop PDF producer applications that create PDF files directly. It also contains information enabling developers to write PDF consumer applications that read existing PDF files and interpret or modify their contents.

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	PDF Reference, Sixth Edition, Version 1.7
11/06 (PDF: 32 MB / 1'310 pages)
	addendum, revised 11/06 (PDF: 106 KB)
	errata, revised 10/07 (PDF: 164 KB)

	PDF Reference, Fifth Edition, Version 1.6
11/04 (PDF: 8.7 MB / 1236 pages)

	PDF Reference, Fourth Edition, Version 1.5
8/03 (PDF: 13.5 MB / 1172 pages)
	errata, revised 06/04 (TXT: 7 KB)

	PDF Reference, Third Edition, Version 1.4
Published by Addison-Wesley, ISBN 0-201-75839-3
11/01 (PDF: 9 MB / 978 pages)
	errata, revised 06/03 (TXT: 13 KB)

	PDF: Changes from Version 1.3 to 1.4
06/01 (PDF: 850 KB / 236 pages)

	PDF Reference, Second Edition, Version 1.3
Published by Addison-Wesley, ISBN 0-201-61588-6
07/00 (PDF: 4.9 MB / 696 pages)
	errata, revised 01/02 (TXT: 19 KB)

	PDF Reference, Version 1.2
11/96 (PDF: 1.4 MB / 394 pages)