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.

How to Create a Digital Signature Using PDF Security. Adobe Acrobat enables you to create PDF documents that are compatible with virtually every operating system and platform.

Digital signing on Android smartphones (with red color) Digital documents can also be signed on-the-go in no time at all. This is also free and easy with PDF Reader – PDF Viewer. You can ...

Last week, we discussed how to create a digital signature that you can use to sign official PDF documents in your own handwriting. But what if you don’t have a digital ID yet and you need one ...

To password protect a PDF in Adobe Acrobat Reader, you'll need the paid Pro version, which starts at $14.99 a month.