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Photoshop Backround Knockout Tricks Adobe Photoshop / Getting Started
Here's a few simple steps to achieve another method of eliminating the background of an image when exporting the image to a page layout, vector-editing application, or printing purposes.
We will create a 'Clipping Path' to isolate the nontransparent portion of an image so that layout programs print the image as expected, otherwise, it will display and print the transparent portions of an image as white.