If you need a quick way to capture whole web pages exactly as they are rendered online, then Web Snapper (formerly known as Red Snapper) might be the cool Mac PDF tool for you.
Web Snapper 2.5.1 is a Safari plugin that lets users "snap" web pages and send to a file, or copy to clipboard. Additionally users can save the snapped pages as images or vector-based PDFs with links included.
The program requires a Mac-based operating system.
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.