Use dithering to approximate colors a palette lacks

Dithering approximates colors that are not in the current palette by alternating similarly colored pixels. From a distance, the colors blend to look like the missing color. Dithering is especially helpful when exporting images with complex blends or gradients or when exporting photographic images to an 8-bit graphic file format such as GIF.

 Enter a percentage value in the Dither text box of the Optimize panel.

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