Details: File format summary

Details for: Wireless Bitmap

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Properties

Summary
Name	Wireless Bitmap
Version
Other names
Identifiers	PUID: fmt/497 MIME: image/vnd-wap-wbmp
Family
Classification	Image (Raster)
Disclosure
Description	The Wireless Application Protocol Bitmap format, or Wireless Bitmap, is a monochrome image format optimised for use on the mobile web.
Orientation
Byte order
Related file formats	None.
Technical Environment
Released
Supported until
Format Risk
Developed by	None.
Supported by	None.
Source	Digital Preservation Department / The National Archives
Source date	26 Feb 2013
Source description	The format structure is as follows: The first two bytes are both '00'. The next two bytes represent the width, then height of the image in pixels. The remaining bytes represent the image data. Further information regarding the format can be found on the Wikipedia page: http://en.wikipedia.org/wiki/Wireless_Application_Protocol_Bitmap_Format The file format specification is available here: http://web.archive.org/web/20010605024138/http://www.wapforum.org/what/technical/SPEC-WAESpec-19990524.pdf It is not possible to create a strong binary signature for this format, since the only constant bytes are the first two, both '00', which would cause an identification clash with many other formats.
Last updated	26 Feb 2013
Note