Sending important documents? Learn how to password protect PDFs for extra security using easy steps with Adobe Acrobat and free online tools.

If you want to share a PDF file with other people, but need to protect it from being viewed by unwanted eyes, LibreOffice has a built-in password-protect feature.

Do you share PDF files with other people? Here's how to password protect a PDF on Windows for protection against unauthorized access, editing, and printing.

Do you share PDF documents with people? Here's a guide on how to password protect a PDF on Mac to protect it from unauthorized access, editing, and printing.

Adding password protection to a PDF can make the file even more secure and is the best practice when sharing any sensitive information.

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

How you go about this will depend on the software you're using to create the file in the first place. Some applications have password protection features built in, while in other cases you'll need ...

“Is there any way to password-protect and lock a sensitive PDF file before sending it as an attachment through email? I cannot afford Adobe Acrobat Pro and free primopdf didn’t work for me.