Optimizing colors in GIF and PNG-8 images

Decreasing the number of colors in an image is a key factor in optimizing GIF and PNG-8 images. A reduced range of colors will often preserve good image quality while dramatically reducing the file space required to store extra colors.

The color table gives you precise control over the colors in optimized GIF and PNG-8 images (as well as original images in indexed color mode). With a maximum of 256 colors, you can add and delete colors in the color table, shift selected colors to other colors or to transparency, and lock selected colors to prevent them from being dropped from the palette.

Related Subtopics:

Viewing a color table
Generating a color table
Changing the display of the color table
Adding new colors to the color table
Including black and white in a color table
Selecting colors
Shifting colors
Shifting to Web-safe colors
Mapping colors to transparency
Locking colors in the color table
Deleting colors from the color table
Loading and saving color tables
Using master palettes (ImageReady)