Mozilla Banner (GIF 89a):
8-bit:
7-bit:
6-bit:
5-bit:
4-bit:
3-bit:
Gray:
Transparent space image (GIF 89a):
8-bit:
7-bit:
6-bit:
5-bit:
4-bit:
3-bit:
Gray:
Five Rows of a black pixel (GIF 89a):