Here's how you can use your Mac's built-in tools to create password-protected PDFs to secure data while working remotely.

“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.

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.

Here is how we can generate password-protected PDFs in Rails using Wicked PDF, ImageMagick, and Prawn gem in Ruby on Rails w/ code.

How to Access a Password-Protected PDF on a Kindle. The major advantage to PDF files is that you can distribute documents to a wide variety of platforms, including the Amazon Kindle.