Protect PDF with Password

Add password protection to your PDF — free, fast, and private

🔒 Your files never leave your device. All processing happens locally in your browser.
🔐

Drop your PDF here or click to upload

Select a PDF to password-protect

⚠️ Important: Remember your password! If you forget it, the PDF cannot be recovered. This tool uses client-side encryption — we cannot recover your password.
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How to Password-Protect a PDF

  1. Upload your PDF file
  2. Enter and confirm your password
  3. Click "Protect PDF"
  4. Download your password-protected PDF

Note: PDF password protection uses standard PDF encryption. The protected PDF will require the password to open in any PDF viewer.

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Frequently Asked Questions

What type of encryption is used?

This tool uses PDF standard encryption. The resulting PDF will require the password to open in Adobe Acrobat, Preview, and other PDF viewers.

What if I forget my password?

There is no way to recover a forgotten password. Always store your password securely. Consider using a password manager.

Are my files uploaded to a server?

No. All processing happens entirely in your browser. Your PDF files and passwords never leave your device.

Can I remove the password later?

Yes. Use our Unlock PDF tool to remove the password if you know it.