Websupergoo demonstrates how to edit PDF files with the Infix PDF editor. Infix can replace an existing image with another image loaded from a file. To accomplish this, use the object select tool and choose the image for the replacement. The clipping mask is denoted by a pink border and will be retained and applied to the image that you would like to replace. Select the replacement by choosing the replace object option. Next, choose the replacement image from your computer files. After you replace your image, you can then resize it as needed. Insert additional images as necessary.