Password-protect PDF

Lock a PDF with a password and AES-256 encryption.

Drop a PDF to protectPDF files stay on this deviceor paste with Ctrl V / ⌘ V

Choose a PDF to start.

How to use it

  1. Add your PDF. Drop a PDF on the box or choose it from your device.
  2. Choose what to do. Set the options.
  3. Protect PDF. Press Protect PDF. The result is ready in seconds.
  4. Download. Download the PDF, or a ZIP when there are several files.

What happens to your file

The PDF is encrypted with AES-256, the strongest standard PDF encryption, using the free qpdf engine. Anyone opening it needs the password.

Questions

Is my PDF uploaded?

Nothing is uploaded: the PDF is read and written inside this browser tab, so it never leaves your device.

Does it work with password-protected PDFs?

Yes, after you remove the password with Unlock PDF.

Can you recover a lost password?

No. Nobody can: that is what the encryption is for. Keep a copy of the password somewhere safe.