The Optimize Image dialog allows you to select the options for reducing a high color image to 8bit color.
The preview control is comprised of a left and right pane. The left pane displays the original image, and the right pane displays a preview of how the image looks after processing.
The two controls are synchronized, so as you pan, scroll and zoom with one, the same changes are reflected in the other, and vice versa.
Number of colors
Displays the number of colors in the original image
Displays the size of the original image
Use Global Color Palette
Select this option to apply the global color palette to the image
Copy Global Palette to Local
Select this option to copy the existing global color palette to the image
Select this option to convert the image to grayscale
Select this option to reduce the color depth of the original image using the octree color quantization algorithm.
Specifies whether to use 8bit (256) or 4bit (16) colors for the optimized image.
Select this option to apply an external color palette to the image
External Palette Filename
Enter or select the filename of the external palette to load from the list of supported palettes. If the current animation has been saved, the palette filename can be entered relative to the animation path.
Allows you to export the palette as an external file in one of the supported palette formats.
Click this button to apply the selected optimization to the selected frame
Closes this dialog without making any changes.
Displays this help topic.