QuarkXPress
From Just Solve the File Format Problem
QuarkXPress is a desktop publishing application.
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Identifiers
Many file extensions have been reported: .qcd, .qct, .qpt, .qwd, .qwt, .qxb, .qxd, .qxl, .qxp, .qxt. More research may be needed to sort this out.
Identification
Files have "IIXPR" or "MMXPR" at offset 2.
QuarkXPress legacy documents (QuarkXPress 3, 4, 5 and 6) need to be converted to the new format (QuarkXPress 9.1) in order to be opened by QuarkXPress 10 and newer. Free software is available.
Versions
QuarkXPress file versions can be determined by offset 8 or 9[1].
| Version | Extension | Year | Offset |
|---|---|---|---|
| QuarkXPress 1 | 1987 | 0x20 | |
| QuarkXPress 2 | 1989 | ||
| QuarkXPress 3.1 Mac | .QXD | 1992 | 0x39 |
| QuarkXPress 3.1 | .QXD | 1992 | 0x3e |
| QuarkXPress 3.3 | .QXD | 1996 | 0x3f |
| QuarkXPress 4 | .QXD | 1997 | 0x41 |
| QuarkXPress 5 | .QXD | 2002 | 0x42 |
| QuarkXPress 6 | .QXP | 2003 | 0x43 |
| QuarkXPress 7 | .QXP | 2006 | 0x44 |
| QuarkXPress 8 | .QXP | 2008 | 0x45 |
| QuarkXPress 9 | .QXP | 2011 | 0x46 |
| QuarkXPress 9.1 | .QXP | 2011 | 0x47 |
Software
- QuarkXPress
- Re-lab / OLE Toy - Appears to have some support for parsing the format
- Libqxp library for LibreOffice, currenly only reads QuarkXPress versions 3-4
