Protect PDF with Password

Add password protection to your PDF file, 100% local browser processing, your file never leaves your device.

🔒

Drop your PDF here, or click to select

About This Tool

Add password protection to your PDF files directly in your browser. Our PDF encryption tool uses standard AES-256 encryption to lock your documents, and your files never leave your computer — no cloud upload, no waiting for server processing. Perfect for protecting contracts, bank statements, and sensitive personal documents before sharing.

How to Use

  1. Upload the PDF you want to lock by dragging it into the zone above.
  2. Enter your desired password and choose your permission settings (printing, copying, editing restrictions).
  3. Click "Encrypt PDF" and download the protected file instantly.

Frequently Asked Questions

How strong is the encryption?

We use industry-standard AES-256 encryption, which is the same level used by banks and government agencies. Your protected PDF cannot be opened without the correct password.

Do my PDFs get uploaded to your server?

No. All encryption runs locally in your browser with Web Crypto API. Your files are never sent anywhere, which means even we cannot see your documents.

Can I remove encryption later?

As long as you know the password, you can unlock the PDF by entering it in any standard PDF reader. We do not store copies of your files, so recovery is only possible if you remember your password.