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URI: http://www.j-a-b.net/web/graf/dithering-img-8bit
last updated: 2009-12-04
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Dithered 8bit Images

The effect of dithering in indexed 8bit images with a maximum of 256 colours is shown in the chart below. Clicking the radio button below any image fixes the image to the viewport. When scrolling the page, the image follows, letting you compare it to other images .

Dithering in 8bit images
Image Conversion	zoom upper right corner
unfix
Image Conversion	zoom upper right corner
unfix
Original Image (32bit - TrueColor) Colours: 34,426 File Size: 58,628 bytes fix it	zoom Colours: 9,561 File Size: 20,700 bytes fix it
Optimized 256 Colour Palette
none Colours: 256 File Size: 17,272 bytes fix it	zoom Colours: 175 File Size: 6,111 bytes fix it
ordered Colours: 256 File Size: 21,558 bytes fix it	zoom Colours: 192 File Size: 7,549 bytes fix it
Floyd-Steinberg Normal Colours: 256 File Size: 25,709 bytes fix it	zoom Colours: 213 File Size: 9,184 bytes fix it
Floyd-Steinberg Advanced Colours: 256 File Size: 25,503 bytes fix it	zoom Colours: 210 File Size: 9,080 bytes fix it
Websafe 216 Colour Palette
none Colours: 78 File Size: 7,256 bytes fix it	zoom Colours: 49 File Size: 2,676 bytes fix it
ordered Colours: 96 File Size: 16,726 bytes fix it	zoom Colours: 70 File Size: 5,523 bytes fix it
Floyd-Steinberg Normal Colours: 102 File Size: 20,355 bytes fix it	zoom Colours: 76 File Size: 6,592 bytes fix it
Floyd-Steinberg Advanced Colours: 104 File Size: 20,317 bytes fix it	zoom Colours: 76 File Size: 6,598 bytes fix it