A PCX file has three main sections, in the following order PCX files were designed for use on IBM-compatible PCs and always use little endian byte ordering. A DCX file consists of a header introducing a set of following PCX files. There is a multi-page version of PCX, used by some computer fax and document management programs, with file extension. In version 2.1.4 FFmpeg could encode and decode the PCX pixel formats rgb24, rgb8, bgr8, rgb4_byte, bgr4_byte, gray, pal8, and monob. PCX is supported by common image processing software including ACDSee, GIMP, ImageMagick, IrfanView, LView, Netpbm, PaintShop Pro, Photoshop, Visio, PMview, XnView and GraphicConverter. Contemporary image editing programs may not read PCX files that match older hardware.
Table A shows a list of the most commonly used PCX formats.
PCX was designed during the early development of PC display hardware and most of the formats it supported are no longer used. Common PCX Image FormatsĤ096 colors with 16 levels of transparencyġ6.7 million with 256 levels of transparencyĢ colors monochrome (1-Bit) (Win 3.1 Paintbrush)ġ6 colors RGBi (4-Bit) in 4 planes (Win 3.1 Paintbrush) PCX files commonly stored palette-indexed images ranging from 2 or 4 colors to 16 and 256 colors, although the format has been extended to record true-color (24-bit) images as well. It was the native file format for PC Paintbrush and became one of the first widely accepted DOS imaging standards, although it has since been succeeded by more sophisticated image formats, such as BMP, JPEG, and PNG. PCX, standing for PiCture eXchange, was an image file format developed by the now-defunct ZSoft Corporation of Marietta, Georgia, United States.
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