Skip to content
Okaysize

How to password protect a PDF

Lock a PDF with a password before you email or share it.

  • About 1 minute
  • Free, nothing uploaded
  • 5 steps

Steps

  1. Add your PDF

    Drag your PDF onto the box, or click Choose a file. It opens right in your browser. Nothing is uploaded.

  2. Type a password twice

    Enter it in Password and again in Type it again. 12 or more characters is best.

  3. Choose permissions

    Turn off Allow printing or Allow copying text if people who open it shouldn't do those things.

  4. Click Protect PDF

    The PDF is encrypted on your device.

  5. Download the result

    Click Download to save the protected PDF. The original file is left exactly as it was.

Tips

  • Send the password a different way than the file, like a text message instead of the same email.
  • Keep the password somewhere safe. Nobody, including Okaysize, can recover it.

Questions

How strong is the protection?
The PDF is encrypted with AES 256, the strongest standard PDF encryption. A long password matters most.
Can I remove the password later?
Yes, with Unlock PDF, as long as you know the password.

Ready? Protect PDF is free.

Lock it with a password. Works in your browser, no sign up.

More how to guides