How to Electronically Sign PDF Documents on iPhone or iPad One of the easiest ways to sign a PDF document on an iPhone or iPad is to use the Files app. Files is Apple’s default file management ...

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

You’ll only need to sign up for a free account, which allows you to convert PDFs to a number of different file formats as well as merge, split, delete, reorder, extract and insert new PDF pages.

Fortunately, Apple has added the ability to electronically sign a PDF document using Preview, a program that comes preinstalled on every Mac running OS X Lion or later.

Learn how to use tools to create, annotate, and extract text from a PDF on a Chromebook.