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Password-protect a PDF

Add a password (AES-256)

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About this tool

Lock a PDF with a password so only people who know it can open the file. The encryption is AES-256 and is applied in your browser, so neither the document nor the password is uploaded.

How to password-protect a PDF

  1. Choose a PDF.
  2. Enter the password to open the file and, if you like, set permissions.
  3. Save the protected PDF and keep the password safe.

Frequently asked questions

What happens if I forget the password?

DocPro cannot recover it, since it is never stored anywhere. Keep a note of it.

Are the permission settings enforced?

Well-behaved PDF apps respect them. The open password is what really locks the file.

Is my password sent anywhere?

No. Encryption is done in your browser.

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