PDFs are in part designed so that they cannot be edited. However, often you may need to change or correct something in a PDF document. PDFpen from SmileOnMyMac is a wonderful tool that lets you do just that.
Though important, the ability to edit text is only a small part of PDFpen’s abilities. This review will investigate what can be achieved using this application; from merging pages to character recognition, as well as what could be improved.