Choose a palette from the Optimize panel Palette pop-up menu, and then optimize it.
These palettes are available by default:
Adaptive is a custom palette derived from the actual colors in the document. Adaptive palettes most often produce the highest quality image with the smallest possible file size.
Web Adaptive is an adaptive palette in which colors that are close to Websafe colors are converted to the closest Websafe color.
Web 216 is a palette of the 216 colors common to both Windows and Macintosh computers. This palette is often called a Websafe or browser-safe palette because it produces fairly consistent results in various Web browsers on either platform.
Exact is a palette containing the exact colors used in the image. Only images containing 256 or fewer colors may use the Exact palette. If the image contains more than 256 colors, the palette switches to Adaptive.
System (Windows) and System (Macintosh) each contain the 256 colors defined by the Windows or Macintosh platform standards, respectively.
Grayscale is a palette of 256 or fewer shades of gray. Choosing this palette converts the exported image to grayscale.
Black and White is a two-color palette consisting only of black and white.
Uniform is a mathematical palette based on RGB pixel values.
Custom is a palette that has been modified or loaded from an external palette or a GIF file.
To import a palette:
| 1 | Load an ACO or GIF palette: |
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Choose Load Palette from the Color Table panel Options pop-up menu. |
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Choose Custom from the Optimize panel Palette pop-up menu. |
| 2 | Navigate to an ACO or GIF file and click Open. |
| The colors from the ACO or GIF file are added to the Color Table panel. | |
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