DXB 1.0

Writable

3d · also known as DXB (1.0)

The Drawing Interchange Binary Format (DXB) is a vector graphics format developed by AutoDesk for its AutoCAD family of products. A DXB file comprises a file header followed by zero or more data records. Each data record begins with a single byte identifying the record type, followed by one or more data items. The DXB format should not be confused with the binary encoded version of the Drawing Interchange File Format (DXF) - DXB is an entirely separate format, being much simpler and more compact.

Identify it

Extensions	`.dxb`
MIME types	`application/x-dxb`
Signatures	`4175746f4341442044584220312e300d0a1a00` at byte 0 (DXB 1.0)
PRONOM	`fmt/54`
Wikidata	`Q26759185`

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NetpbmOpen sourcewrites · GNU General Public License, version 2.0
ExtraCADreads and writes
T-FLEX CADreads and writes · proprietary license
IntelliCADreads

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Sources

From Just Solve the File Format Problem (File Formats Wiki), PRONOM, Wikidata. Updated 2026-10-24.

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