Are you trying to open a password-protected PDF or ZIP file? Then, you already know how frustrating it can be. You try out different tools, and the result is a ...

PDF files can contain everything from reviewer proofs of pre-publication books and under-development drafts of confidential intellectual property to proprietary financial data and personal information ...

Portable Document Format (PDF) is the only widely used document format for all Office and Professional Communication activities. While often, we might want to copy certain text or images or a complete ...

A recommended approach to secure your most private documents — whether it’s a PDF, Word file, or Excel spreadsheet — is to lock them with a passcode. While this does help keep sensitive content safe, ...

PDF is a user-friendly, printable, downloadable file format that works across all systems. In our digital age, PDF has replaced many paper documents, making security all the more important. Thankfully ...

To password protect a PDF in Adobe Acrobat Reader, you'll need the paid Pro version, which starts at $14.99 a month.

You can password protect a PDF on a Mac computer using the Preview app to secure files that contain sensitive information.