The device-independent bitmap (DIB) format represents bitmap images in a device-independent manner. Bitmaps can be represented at 1, 4, and 8 bits per pixel, with a palette containing colors represented in 24 bits. Bitmaps also can be represented at 24-bits per pixel without a palette and in a run-length encoded format.
This documentation describes three types of DIB files:
The Windows 3.0 and Presentation Manager 1.2 DIBs are similar, so they are discussed together.