Learn how to lock a PDF and password protect PDF file from editing, copying, sharing. This guide provides useful tips to help you lock PDFs like a pro.

Looking for the best tools to lock a PDF so it cannot be edited? Rest assured that we've got a few great options to choose from.

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 ...

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.

If you're wondering how to encrypt a PFC file for email, check out the PDF encryption options in Adobe Acrobat.

This post will show you how to lock a file or folder in Windows 11/10. You can use the built-in method to encrypt folders or third-party apps.

You can embed a PDF file into a cell of an Excel worksheet and then use Excel's security features to lock the object. This allows you to take advantage of both technologies.