You can make all pixels of a specific color in a grayscale or color image transparent. (The transparency color of a bitonal image is always the background color of the image.) This is useful for overlaying two images or placing an image in front of objects.
To make an image transparent
Specify which color will be transparent.
To change the color that is transparent
If you are zoomed so you cannot see the image frame, press Shift + left-click to select the image.
If Transparency Color does not appear in the Properties palette, the image may not be loaded or the Raster Extension may not be loaded. To load the image, select the image. Right-click the image . To load the Raster Extension, choose an image command such as .
You can choose the transparency color for grayscale and color images. In bitonal images, the transparency color is always the background color of the image.