Format

X-Windows Bitmap Image

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Summary

Name

X-Windows Bitmap Image

Version

X10

Identifiers

MIME: image/x-xbitmap
PUID: x-fmt/299

Format type

Image (Raster)

Description

This is an outline record only, and requires further details, research or authentication to provide information that will enable users to further understand the format and to assess digital preservation risks associated with it if appropriate. If you are able to help by supplying any additional information concerning this entry, please return to the main PRONOM page and select ‘Add an Entry’.

Format encoding

Text

File extensions

xbm

Submitted by

Digital Preservation Department / The National Archives

Internal signatures

X-Windows Bitmap Image X10

Description: Starts with a C declaration: "#define <name>_width <integer>#define <name>_height <integer> static unsigned short <name>_bits[] = {" where <name> is filename without extension.
Provenance: XBM. Encyclopedia of Graphic File Formats. O’Reilly. http://netghost.narod.ru/gff/graphics/summary/xbm.htm XBM - X BitMap Format www.martinreddy.net/gfx/2d/XBM.txt

Byte sequences

Min Frag Length: Absolute from BOF
Offset: 0
Max offset: None
Byte Sequence: 23646566696E6520{1-30}5F776964746820{1-16}23646566696E6520{1-30}5F68656967687420*73746174696320756E7369676E65642073686F727420{1-30}5F626974735B5D203D207B
Endianness: None

Changelog

V58

Release date

21 March 2012
- Added signature
  
  X-Windows Bitmap Image X10: Signature submitted by Georgia Tech Research Institute, USA.
- Updated
  
  X-Windows Bitmap Image X10: Format name changed for greater accuracy and consistency.