| Full Name | WPG (WordPerfect Graphics Metafile) |
| Format ID | IG_FORMAT_WPG = 42 |
| File Extension(s) | *.wpg |
| Data Type | Raster Image |
| Data Encoding | Binary |
| ImageGear Multipage Support | No |
| ImageGear Alpha Channel Support | No |
| ImageGear Platforms Support | WIN32, WIN64, Unix, Unix64, .NET, .NET64, MAC |
ImageGear Supported Versions:
- WPG for WP 5.1 and up can store bitmap and vector graphics in the same file.
- WPG for WP 5.0 and prior can store only bitmap or vector graphic, but not both in same file.
ImageGear Supported Features:
- IG_FLTR_DETECTSUPPORT - autodetection
- IG_FLTR_PAGEREADSUPPORT - single page file reading
ImageGear Read Support:
- IG_COMPRESSION_RLE - Indexed RGB: 1, 4, 8 bpp
ImageGear Write Support:
None
ImageGear Filter Control Parameters:
None
Comments:
This format was created specifically for use with WordPerfect software products. WPG files for WordPerfect versions 5.1 and up can store both bitmap and vector image data in the same file.
The WordPerfect Graphics Metafile contains a short header or "prefix" (as WordPerfect Corporation referred to it). The header is followed by a record area, that is a sequence of objects and their attributes. The first record is called the "Start WPG Data" record and contains information on the size of the images and the version number of the .WPG file. The next record is usually a color map, unless the image is black and white. The next record is a bitmap record. If there are multiple images, there is a bitmap record for each image. The last record in a .WPG file contains a NULL body to signify the end of the file. These files may also contain Encapsulated PostScript (EPS) data.
References Used
Murray, James D. "Graphic Image Format FAQ 3-4". James D. Murray, 1994-1996.
Murray, James D. and William vanRyper. Encyclopedia of Graphics File Formats. Sebastopol, CA: O'Reilly & Associates, Inc., 1994.