1939 PDF 2.0 - Portable Document Format 2.0 Page Description Portable Document Format is a platform-independent format for representing formatted documents, originally developed by Adobe Systems Incorporated. PDF 2.0 is standardised by ISO 32000-2. A PDF file comprises a Header section, a Body section containing the objects which make up the document, a Cross Reference Table, and a Trailer section. PDF files can contain a wide variety of content, including text, images, video and audio. 1 Digital Preservation Department / The National Archives 29 Nov 2017 29 Nov 2017 application/pdf MIME fmt/1129 PUID pdf File extension 1511 PDF 2.0 PDF 2.0 allows an arbitrary amount of information to appear before the PDF 2.0 data starts. For now we are setting a max offset of 4096 bytes from the BOF before we expect to see the %PDF-2.0 tag as this should encompass most use-cases and also maintain processing efficiency for any identification tools using PRONOM data. If you find this offset is inadequate please contact the PRONOM team. Also seeking EOF sequence %%EOF within final 1024 bytes. This signature cannot currently identify files that were incrementally saved to PDF 2.0 from a previous PDF version (for example PDF 1.7), and this scenario will currently return an identification for the orignal format. Please contact the PRONOM team if you can assist with developing a signature that can account for such a use-case. 1 Absolute from BOF 0 4096 255044462D322E30 1 Absolute from EOF 0 1024 2525454F46 Has lower priority than 2766 Acrobat PDF/A - Portable Document Format Has lower priority than 2767 Acrobat PDF/A - Portable Document Format Has lower priority than 2770 Acrobat PDF/A - Portable Document Format Has lower priority than 3926 PDF/UA Portable Document Format