Image FormatsA Scanned Document |
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| JPEG uncompressed 101k |
JPEG 50% compressed 14k |
JPEG 75% compressed 9k |
Scanned from the original document at 150 dots per inch |
Barely distinguishable from the uncompressed scan but a sixth of the file size |
11 x smaller than the original, though the ghosting makes the printing and handwriting harder to read |
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| JPEG 90% compressed 5k |
GIF 256 colours 100k |
GIF 8 colours 21k |
Blotches of colour and the illegibility of the text show that this level of compression is useless where detail is important |
There's little to choose between this and the original scan. The subtle shades of the paper and ink mean there's little saving to be made by using the GIF format |
The colour is distorted but the contrast between text and background is preserved and it remains more or less legible, though it is less usable than the smaller 50% JPEG |