Password Protect a PDF Online

Lock a PDF with a password (AES-256 encryption).

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Add a password before you share a contract, bank statement or personal record. The PDF is encrypted with AES-256 in your own browser, so neither the file nor the password is sent to a server. You can also stop people from printing it or copying its text.

How to use Protect PDF

  1. Select your PDF file.
  2. Enter a password twice, and choose whether to block copying or printing.
  3. Click Protect PDF and download the encrypted file.

Frequently asked questions

How strong is the protection?

Files are encrypted with AES-256. Use a long password that is hard to guess, since the minimum is only 4 characters.

What happens if I forget the password?

We cannot recover it, because the password never reaches our servers. Keep it somewhere safe and keep an unprotected copy if you need one.

Can I stop people printing or copying my PDF?

Yes. Tick Block copying text or Block printing. Most PDF readers honour these settings.

Is Protect PDF free?

Yes. It is a premium tool that free users can run by watching a short ad.

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