Brush (. pcx):
Local bitmap file formats for PC brushes and Microsoft brushes for Windows. It is supported by MS-DOS/Windows, UNIX and many other applications. Support 24-bit color, and the maximum image pixel is 64000*64000. Support RLE compression. A format widely used to save and exchange Windows-based applications. As a patent-free substitute for GIF, PNG (Portable Network Graphics) format is used for lossless compression and image display on the World Wide Web. Unlike GIF, PNG supports 24-bit images and produces a transparent background without jagged edge. However, some earlier versions of Web browsers may not support PNG images. PNG format supports RGB and grayscale modes with Alpha channel, as well as bitmap and indexed color mode without Alpha channel. PNG defines the transparent area in the file with the stored Alpha channel; Before saving the file in PNG format, be sure to delete all Alpha channels except the desired Alpha channel.