Deleting colors from the color table
You can delete selected colors from the color table to decrease the image file size. When you delete a color, areas of the optimized image that previously included that color are rerendered using the closest color remaining in the palette.
When you delete a color, the color table automatically changes to a Custom palette. This is because the Adaptive, Perceptual, and Selective palettes automatically add the deleted color back into the palette when you reoptimize the image--the Custom palette does not change when you reoptimize the image.
To delete selected colors:
- Select one or more colors in the color table. (See Selecting colors.)
- Delete the color by doing one of the following:
- Click on the Trash button
. - Choose Delete Color from the Color Table palette menu.