Wireless Application Protocol Bitmap Format (shortened to Wireless Bitmap and with file extension .wbmp) is a monochrome graphics file format optimized for mobile computing devices.
WBMP images are monochrome (black & white) so that the image size is kept to a minimum. A black pixel is denoted by 0 and a white pixel is denoted by 1.
Format of Wireless Bitmap Files
||Size (in bytes)
||Type of the image, and is 0 for monochrome bitmaps.
||Reserved. Always 0.
||Width of the image in pixels.
||Height of the image in pixels.
||Data bytes arranged in rows – one bit per pixel. A black pixel is denoted by 0 and a white pixel is denoted by 1. Where the row length is not divisible by 8, the row is 0-padded to the byte boundary.