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.

How to Insert a Watermark in a PDF File. Watermarks are images or text displayed over the top of or underneath content in your PDF files to indicate information such as who owns the document, who ...

Don't have a printer and scanner? You still can easily sign a PDF file, no matter the operating system you're running.

If you've ever tried to edit a Portable Document Format file, or PDF, you've almost certainly discovered that it's a lot more trouble than editing a Microsoft Word or Google doc. That's because ...

To edit a PDF file on your Android for free, you can use the Adobe Acrobat Reader: Edit PDF app. While you can’t modify existing text or images with a free account, you can add new text ...

Wondering how to edit a PDF on a Mac? Want to do it for free? You can! There is a free PDF editor built right into MacOS and it's really easy to use. We show you how to edit a PDF on a Mac, plus ...

Editing a PDF in Google Drive isn’t overly difficult, and our guide will help you every step of the way.