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Format

Portable Bitmap Image - Binary

Summary

Name
Portable Bitmap Image - Binary
Identifiers
PUID: fmt/409
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’.
File extensions
pbmb, pnm
Source
Georgia Tech Research Institute / Georgia Tech Research Institute

Internal signatures

Portable Bitmap Image - Binary with comment

Note
“P4” followed by possible comment, followed by width, height.

Byte sequences

Min Frag Length
Absolute from BOF
Offset
0
Max offset
None
Byte Sequence
5034(20|0D|0A){0-2}23{0-70}0A(30|31|32|33|34|35|36|37|38|39|20|0A|0D)(30|31|32|33|34|35|36|37|38|39|20|0A|0D)(30|31|32|33|34|35|36|37|38|39|20|0A|0D)(30|31|32|33|34|35|36|37|38|39|20|0A|0D)
Endianness
None

Portable Bitmap Image - Binary without comment

Note
“P4” followed by width, height.

Byte sequences

Min Frag Length
Absolute from BOF
Offset
0
Max offset
None
Byte Sequence
5034(20|0D|0A)(30|31|32|33|34|35|36|37|38|39|20|0A|0D)(30|31|32|33|34|35|36|37|38|39|20|0A|0D)(30|31|32|33|34|35|36|37|38|39|20|0A|0D)(30|31|32|33|34|35|36|37|38|39|20|0A|0D)
Endianness
None

Changelog

  • Added in V58

    Release date
    21 March 2012

    Portable Bitmap Image - Binary with comment: Signature submitted by Georgia Tech Research Institute, USA.

    Portable Bitmap Image - Binary: Submission from Georgia Tech Research Institute, USA. Outline entry added.