The PCX format is commonly used in Windows systems. Most Windows software supports version 5 of the PCX format.

The PCX format supports RGB, indexed-color, grayscale, and bitmap color modes, as well as the RLE compression method, which is lossless. It does not support alpha channels. Images can have a bit depth of 1, 4, 8, or 24 bits. However, PCX is not ideal for commercially printed or online documents. PCX graphics can provide acceptable quality only when printed on low-resolution or non-PostScript printers.