Mozilla's latest version of Firefox conveniently includes a built-in PDF viewer. If you prefer your own PDF viewer, here's how to change it.

And, you can change your default PDF viewer for your browser by installing the Acrobat Reader browser extension. Install Adobe Acrobat Reader DC Head to the official Adobe website.

Learn how to enable and use PDF editing tools in Firefox PDF reader. You can use Free Text Annotation tool and Ink Annotation tool in Firefox.

Instead, you can use the free Acrobat Reader program to sign the PDF directly. In fact, Acrobat Reader gives you a few different ways to sign a PDF.

Adobe yesterday updated their PDF reader with a huge number of bug fixes. Should you install the updates or ditch the Adobe Reader for a competing (also free) program? In the good old days users ...

If you read content like eBooks or any other long PDF files, then you might like to disable Chrome, Firefox or Edge’s PDF Viewer and switch to a better alternative.

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.