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Protect PDF

Add password protection to PDF

Apply industry-standard AES-256 encryption in your browser. Set an open password and control printing, copying, and editing permissions.

Local browser processing No uploads. No account required.

How do I protect a PDF with a password?

  1. Choose a PDF file from your device.
  2. Enter an open password and confirm it.
  3. Optionally choose whether to restrict printing, copying, or modifications.
  4. Click 'Protect PDF' to generate and download the encrypted file.

Is encryption performed locally?

Yes. Encryption runs entirely inside your browser's Web Worker. Your password and PDF data are never uploaded or sent over any network.

Can I recover a forgotten password?

No. AES-256 is an industry-standard cryptographic standard. Without the password, the document cannot be decrypted. Please keep a safe record of your password.

Is my original file modified?

No. A new protected PDF is generated for download. Your original file remains untouched on your device.