The quickest way to do this is to ZIP the PDF file and protect the ZIP file, or use Microsoft Office’s built-in encryption tools to create a password. If you use Outlook, you can use Adobe ...

Method I – Password Protect a PDF using Adobe Acrobat Adobe Acrobat is a popular software for manipulating PDF files on Mac and Windows computers.

Microsoft Word offers the ability to password protect PDF files. Read to know how to lock PDF from editing using Microsoft Word.

The widely used PDF format supports data-saving encryption, allowing you to protect sensitive documents so that only those with the correct password can access them. In the old days, you’d need a ...

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Then, click the File menu in the upper-left corner, and select Open. Choose the PDF file you want to password protect from its respective save location, and click the Open button.

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.