Developed 30 years ago by Adobe, the Portable Document Format, or PDF, is widely used around the globe for viewing and signing documents – everything from corporate annual reports and scientific ...

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.

The ability to edit PDF documents using the official Adobe Acrobat Reader: Edit PDF app is actually an Acrobat Premium feature. This subscription costs $10 per month or $70 yearly. There isn’t a way ...