Free software on your phone or tablet lets you scan, create, edit, annotate and even sign digitized documents on the go.

The Portable Document Format makes it possible for you to open and view documents, no matter what operating system, software or computer you have. To make this happen in Yahoo Mail, the email program ...

For some of us, our phone is our primary computer -- and that means printing the occasional document from your mobile device. Whether it's a spreadsheet or a travel itinerary, sometimes it's just ...