Password-Protect Your PDF Files

Add a password to your PDF to encrypt its contents and prevent unauthorized access. Our free online tool is the easiest way to secure your documents.

Open Protection Tool How it works
Pro tip: Use a strong, unique password with a mix of letters, numbers, and symbols for the best security.
Processed
+2,100,000 files
Rating
4.9/5 (2100+)

Protect PDF — Tool

Upload your PDF, choose a secure password, and let our tool encrypt your file for complete protection.

Your files and passwords are never sent to our servers. The entire process is secure and private.

How to Password-Protect a PDF — Step by Step

Secure your document from unauthorized access with these simple steps.

  1. Open the widget — click “Open Protection Tool” or scroll to the tool on this page.
  2. Upload your PDF — drag & drop your document or select it from your computer.
  3. Set your password — choose a strong password and enter it twice to confirm.
  4. Protect and Download — click the button to encrypt the file, then download your new, password-protected PDF.

Common use cases

  • Securing sensitive financial reports, business plans, or legal contracts before sharing.
  • Protecting personal information in documents like applications or medical records.
  • Preventing unauthorized access to proprietary research or intellectual property.
  • Ensuring only intended recipients can open an emailed document.

Why Use Our Free PDF Protection Tool?

Our tool is designed for strong security, ease of use, and complete privacy.

Privacy-First

All encryption happens in your browser. Your confidential files and passwords are never uploaded.

Strong Encryption

We use strong AES encryption to ensure your document's contents are robustly protected from prying eyes.

Simple & Fast

No complicated settings. Just upload your file, choose a password, and you're done in seconds.

No Software Needed

Protect your PDFs on any device (Windows, Mac, phone) directly in your web browser without installation.

Important Security Information

  • We cannot recover your password! Because the process is entirely browser-based and private, we have no knowledge of your password. If you forget it, there is no way for us to help you open the file.
  • Store your password in a safe place, like a password manager, to ensure you don't lose access to your document.
  • This tool adds a password to open the file. It does not set separate permissions for printing or copying.

Frequently Asked Questions

Ready to secure your PDF?

Open the tool, upload your file, and add a strong password to protect your document from unauthorized access. It's fast, private, and completely free.

Open the Protection Tool