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Chapter 28. Optimizing Web Images > Optimizing the Palette in GIFs and PNGs

Optimizing the Palette in GIFs and PNGs

As you know from Topic 27, GIF and PNG files have a built-in palette of up to 256 colors. The more colors in the palette, the heavier the image file. If your GIF or PNG image needs all 256 colors, then so be it. However, most GIFs and PNGs can stand to lose some color slots without affecting image quality too noticeably.

GEEKSPEAK

Antialiasing is a technique for creating the appearance of smooth, flowing curves by inserting subtly blended pixels along a curved edge.



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