Free Online Tools · No Upload · 100% Private

Protect PDF

Add military-grade AES-256 encryption to your PDF documents instantly. Set a secure user password to prevent unauthorized access and keep your sensitive information private.

🔒 No Server Upload ⚡ WebAssembly Speed 🆓 100% Free Forever

How to Use Protect PDF

  1. Step 1: Select the PDF you want to protect.
  2. Step 2: Enter a strong, secure password.
  3. Step 3: Confirm the password in the second field.
  4. Step 4: Click 'Protect PDF' and download your encrypted file.

Key Features

  • Secure AES-256 bit encryption standard.
  • Zero server storage: Your password is never sent.
  • Compatible with all standard PDF readers.
  • Instant local encryption.

Frequently Asked Questions

Can Dumkera recover my password?

No. Since we don't store your data, if you forget your password, the file cannot be opened. Keep your password safe!

Is this secure for bank statements?

Yes, our AES-256 encryption is industry-standard for financial documents.

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🔒 Privacy & Security by Design

Dumkera is built for the security-conscious professional. By using WebAssembly (WASM) and ONNX Runtime, we move the processing from our servers to your machine. Traditional online tools require you to upload your sensitive PDFs, private photos, and videos to their cloud.

On Dumkera, your files never leave your device. Open your browser's Developer Tools (Network Tab) and verify it for yourself. We are GDPR compliant, CCPA compliant, and enterprise-ready.