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GIF89a Files
[] What is GIF ?
2col 4col
8col
GIF 2 colors
1bit-2k
GIF 4 colors
2bit-2.5k
GIF 8 colors
3bit- 3.6k
16col
32col
64col
GIF 16 colors
4bit- 4.5k
GIF 32 colors
5bit- 5.8k
GIF 64 colors
6bit- 7.6k
128col
 255col 256col
GIF 128 colors
7bit- 10.2k
GIF 255 colors
8bit- 13.2k
GIF 256 colors
8bit- 13.2k


JPEG Files
[] What is JPEG ?
100
75
JPEG 100%
24bit-6.4k
JPEG 75%
24bit- 1.8k
50
25
JPEG 50%
24bit- 1.5k
JPEG 25%
24bit- 1.3k


Nb of Colors by bit
[] What is a Bit ?

Nb bit Nb of colors
32-bit 16.7+ millions colors
+ 8-bit (256 level) grayscale mask
24-bit 16.7+ millions colors
16-bit 65.5 thousand colors
15-bit 32.8 thousand colors
8-bit 256 colors
7-bit 128 colors
6-bit 64 colors
5-bit 32 colors
4-bit 16 colors
3-bit 8 colors
2-bit 4 colors
1-bit 2 colors


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