Share Email Facebook Twitter LinkedIn To Change Only the Transparency of a Bitonal Image Click Modify menu Object Image Transparency. Select the image to modify. To change the background of the selected image to transparent, enter on. Enter off to change the background to opaque. Related Concepts About Modifying Color and Transparency for Bitonal Raster ImagesAbout Raster Images in Drawings Related Tasks To Change the Color and Transparency of a Bitonal ImageTo Adjust Brightness, Contrast, and Fade of an Image Related Reference Commands for Working with Raster Image Files