Format
Portable Pixel Map - ASCII
Summary
- Name
- Portable Pixel Map - ASCII
- Identifiers
-
- MIME: image/x-portable-pixmap
- PUID: x-fmt/178
- 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
-
ppm - Submitted by
- Digital Preservation Department / The National Archives
Internal signatures
Portable Pixel Map - ASCII
- Description
- “P3” followed by a whitespace char (blank, TAB, CR, LF).
- Provenance
- PPM. User Manual for Netpbm http://netpbm.sourceforge.net/doc/ppm.html
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- None
- Byte Sequence
5033(20|09|0D0A|0A)- Endianness
- None
- Min Frag Length
- Absolute from EOF
- Offset
- 0
- Max offset
- 4
- Byte Sequence
(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)(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)(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)20- Endianness
- None
Changelog
-
V58
- Release date
- 21 March 2012
-
Added signature
Portable Pixel Map - ASCII: Signature submitted by Georgia Tech Research Institute, USA.