Foxit PhantomPDF is a powerful Windows application to create, edit, comment, collaborate and share, secure, organize, export, scan & sign, manage and organize PDF documents. PhantomPDF supports filling and reading of PDF forms, compressing, securing, appending and merging of multiple PDF documents, stamping, setting bookmarks, and many more functions that can transform plain PDF documents into customized, easy to use containers of information. PhantomPDF operates on existing PDF documents and can even create new ones by extracting pages from existing documents.
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.