1 Choose Optimize Animation from the Animation palette menu.
2 Set the following options:
• Bounding Box to crop each frame to the area that has changed from the preceding frame. Animation files created using this option are smaller but are incompatible with GIF editors that do not support the option. (This option is selected by default and is recommended.)
• Redundant Pixel Removal to make transparent all pixels in a frame that are unchanged from the preceding frame. This option is selected by default and is recommended. The Transparency option in the Optimize palette must be selected for redundant pixel removal to work. (See "Optimization options for GIF and PNG-8 formats" on page 420.)
Important: Set the frame disposal method to Automatic when using the Redundant Pixel Removal option. (See "Setting the frame disposal method" on page 410.)
3 Click OK.
4 Apply optimization settings. (See "Optimizing images" on page 415.)
When optimizing the colors in an animation, use the Adaptive, Perceptual, or Selective palette. This ensures that the colors are consistent across frames. (See "Generating a color table" on page 431.)
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