Learn how to add page numbers to PDF files using free online tools or PC software. You can set position, font, etc., for page numbering.

Pariah Burke walks you through the process of adding, removing, and replacing pages in complex Acrobat Pro PDF files.

How to Add Comments to a PDF With Acrobat Reader. PDF files enable you to share and comment on content created in a wide range of applications. Adobe Reader, formerly called Acrobat Reader, offers ...