Like the GIF (that's Graphics Interchange Format), the PDF (Portable Document Format) has survived and flourished through the digital age. That's partly because of its versatility: It's the go-to ...

Portable document format (PDF) files remain a popular choice for business documents ranging from contracts and forms to manuals and reports, so there's a good chance you need to open them often.

Initially created by the Adobe Corporation, Portable Document Format (PDF) allows users to share electronic documents across multiple platforms and retain formatting. You can manipulate the contents ...