You can edit a PDF on your Mac with Preview, an app that's built-in to your computer from the start. You can use this program ...

Adobe Acrobat enables you to create PDF documents that are compatible with virtually every operating system and platform. PDF documents also support a wide range of security features. To send a ...

Posts from this topic will be added to your daily email digest and your homepage feed. is a reviews editor who manages how-tos and various projects. She’s worked as an editor and writer (and ...

If you already have a PDF that you’d like to sign, double-click on it to open it in Preview. Then click on the Pen icon near the top right, select the Sig icon, and choose “Create Signature from Built ...

Google Docs' drawing tool can be used to add a signature to your document, but it's more secure to use an add-on, like ...

When you receive a PDF document by email that you must sign, the process of printing out the file, signing on the dotted line with a pen, scanning the signed document and sending it back can be a ...

Microsoft Office 2007's digital signature feature allows users to finalize documents with a stamp of approval. Digitally signed documents cannot be edited or altered, securing their contents; this is ...