DXF stands for Drawing Exchange Format (or Drawing Interchange Format) and was created by AutoDesk for their AutoCAD and AutoDRAW CAD systems.
There are ASCII (plain text) and binary variants of DXF. The ASCII variant is apparently more prominent. Binary DXF is not to be confused with DXB, a related but distinct format.
|DXF R10||fmt/74, fmt/80|
|DXF R11/R12||fmt/75, fmt/81|
|DXF R13||fmt/76, fmt/82|
|DXF R14||fmt/77, fmt/83|
|DXF 2000-2002||fmt/78, fmt/84|
|DXF 2004/2005/2006||fmt/79, fmt/85|
Binary DXF files begin with the ASCII signature "
AutoCAD Binary DXF".
ASCII DXF files usually begin with
0x30 0x0d 0x0a, followed by "
- Wikipedia page on DXF
- AutoCAD DXF File Format Summary, from the Encyclopedia of Graphics File Formats
- Official AutoDesk specifications for each version of AutoCAD (13 and higher), for example this from AutoCAD 2008
- Minimum Requirements for Creating a DXF File of a 3D Model (textfiles.com; Sept 1993 version)
- Drawing Interchange and File Formats Release 12 (from Autodesk, 1992)