Adds a true transparent drop shadow to the image. If the resulting image is saved as a 32-bit PNG, the image will contain transparency information. The transparency information will be removed and be merged with the background color specified in Image Output Settings when saved to any other format. See help on Transparency/Alpha for more information.
Settings
Tip
Use the drop shadow coupled with background overlay containing the same background image as in your web pages. When the image is placed in the web page with the same background, it will appear as if the drop shadow is transparent and the actual background shows through.
See examples & screenshots on the web.