FAQ: PDFpen
- How do I buy PDFpen or PDFpenPro?
- When are updates available on the Mac App Store?
- PDFpenPro won’t register no matter what! What do I do?
- What is the difference between Bookmarks and Table of Contents in a PDF?
- Which OCR engine does PDFpen use?
- How do I uninstall PDFpen?
- I want to sign my document. How can I do that?
- How do I upgrade to PDFpen / PDFpenPro 13?
- Mac App Store Upgrade Help