The
BMP format is an image format for the Windows operating system.
The images can range from black-and-white (1 byte per pixel) up
to 24‑bit color (16.7 million colors).
Choose File > Save As, and choose
BMP from the Format menu.
Specify a filename and location, and click Save.
In the BMP Options dialog box, select a file format,
specify the bit depth and, if necessary, select Flip Row Order.
For more options, click Advanced Modes and specify the BMP options.