Format

Paint Shop Pro Image

Summary

Name: Paint Shop Pro Image
Version: 5.0
Identifiers: PUID: x-fmt/234
Format type: Image (Raster)
Description: The Paint Shop Pro (PSP) file format is an extremely rich graphics file format that is capable of describing a multi-layered image document in minute detail. The format facilitates the retention of a great deal of information, including layer bitmaps, layer masks, layer vector data, layer adjustment data, layer grouping information, multiple sample thumbnails, multiple sample composite images, image dimension, image resolution, creator name, copyright owner, image description, masks, selections, alpha channels, etc. The PSP format supports storing image bitmaps in an uncompressed format or, to reduce the size of the file, in either Run Length Encoding (RLE) or LZ77 compressed format. As each of these is a lossless storage method, the PSP format always maintains the original quality of stored image documents. Finally, the PSP format supports storing image bitmaps at a variety of bit depths, including 24-bit colour (16.7 million colours), 8-bit colour (256 colour), 8-bit greyscale (256 greys), 4-bit colour (16 colours), and 1-bit colour (2 colours).
File extensions: psp
Source: The National Archives and Records Administration / The National Archives and Records Administration

Is previous version of

Is subsequent version of

Note: Header 32 byte PSP signature (ASCII: Paint Shop Pro Image File); followed by 2 byte little-endian major version

Min Frag Length: Absolute from BOF
Offset: 0
Max offset: None
Byte Sequence: 5061696E742053686F702050726F20496D6167652046696C650A1A00000000000500
Endianness: None