How do I make an image with a transparent background using Image Optimizer?
• In the Web menu, select Image Optimizer. • In the Image Optimizer dialog box, select the GIF file format button. • In GIF Options tab, select the Transparency check box. • Go to the Mask Options tab. • Select “Pick color” in the Mask option and click “Add to Mask,” then choose color directly from the preview window. • Click “Save As” to save the optimized file.
