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.

How the creator of a PDF file sets up her document determines the extent to which you can use Acrobat Reader's commenting tools to mark the file with notes about its content.

Need to edit a PDF document but don’t want to pay for the more expensive Adobe editors? You can add text to and sign a PDF with just the free Reader program.

The files will begin to upload to PDF Joiner (this could take a few minutes, depending on how many and how large your files are). Click Join Files in the bottom right-hand corner of the screen.

You can combine multiple PDF files into a single, easy-to-share document using simple software on your Mac computer or Windows PC. Here's how.

Just like how you add inked signatures on a hard-paper document, you can also add an electronic signature to your PDF document in the Edge browser.