Add PDF password protection to your file to protect sensitive content. When you encrypt a PDF, only people with the password can view the file content.

Use the online password protect PDF tool from Adobe Acrobat to keep your files secure. Simply add a password to your PDF to restrict access.

Add a password to your PDF in seconds to control who can open and view your file. Unlimited free PDF tool usage with a free Adobe account. No subscription or credit card required.

Dec 5, 2025 · Learn how to add password security to a PDF to restrict who can open, edit, print, or copy the document. Try it in the app Add passwords to PDFs in a few simple steps.

Password protect a PDF on a PC to secure your information. Add security to a PDF with Acrobat online, and control who can access and view your file. Why password protect a PDF on your PC? Your PDF …

Remove the password from a PDF in 3 simple steps and learn how to unlock PDF security to read, edit, or share the file.

Explore the password protection feature for PDFs to secure your sensitive information and control the PDF permissions. Start a free trial with Adobe Acrobat.

Learn how to secure a PDF file. Secure your sensitive documents and protect PDFs with passwords to ensure only authorized users can access them.

Jan 28, 2026 · Learn how to add a password to your PDF to protect others from opening or editing the PDF file. Protecting your PDF files prevents unauthorized access, protects sensitive information, …

We’ll show you how to password protect a PDF for free and restrict certain features, such as printing and editing, in Adobe Acrobat.