When you receive a PDF that contains, say, an image that is surrounded by text, how do you highlight the image? One way is to export the graphic to an imaging application such as Photoshop, but that involves additional applications and the associated loading times. A great "quick and dirty" fix here is to use the "Crop" tool to hide the content that surrounds the image, leaving you with PDF which displays only an image, just the way you wanted it. This tip explains how.
OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.