A simple image of any size. Specific images of this format can be found in these wad files:

cached.wad - The loading screen and the drop-down console background (WON version only)
gfx.wad - The "LOADING" and "PAUSED" images among others

File Structure QPic

Width <uint32> (4 bytes)

Image width, in pixels. Must be divisible by 16.

Height <uint32> (4 bytes)

Image height, in pixels. Must be divisible by 16.

Pixels <byte[]> (width*height bytes)

The color index within the pallete.

ColorsUsed <uint16> (2 bytes)

Number of colors used in the palette (always 256 for GoldSrc).

Palette <color[]> (256 * 3 bytes)

Up to 256 RGB colors used in the texture. Each group of 3 uint32 form a R G B color.