Want to encrypt PDF files and keep them safe from unauthorized access? Use our free online PDF encryption tool to quickly add a password to your PDF documents. No installation needed – it's fast, secure, and works on all devices.

🔒 Why Encrypt Your PDF Files?

• ✅ Protect sensitive information from unauthorized access
• ✅ Prevent unauthorized editing, copying, and printing
• ✅ Meet compliance requirements for secure document sharing
• ✅ Ensure privacy when sharing files over email or cloud

⚙️ How to Encrypt PDF Online

1. Upload your PDF file to our tool
2. Enter a secure password of your choice
3. Click on ‘Encrypt PDF’ to apply protection
4. Download your newly encrypted file instantly

💡 Features of Our PDF Encryption Tool

• 🧩 100% free and secure PDF encryption
• ⚡ Fast processing with instant download
• 🔐 Strong password encryption with AES-256 standard
• 📱 Works on mobile, tablet, and desktop
• 🗃️ No file size limit or watermark

📌 Frequently Asked Questions

Is this PDF encryption tool free to use?

Yes, our tool is completely free and doesn’t require registration.

What type of encryption is used?

We use AES-256 encryption for top-level security and data protection.

Can I unlock the PDF after encryption?

You’ll need the correct password to unlock or decrypt the file later.

Are my files stored on your server?

No, all files are processed locally and automatically deleted after use.

🔗 Internal & External Links

Check out our other tools like Unlock PDF and Merge PDF. Learn more about PDF encryption standards at Wikipedia - PDF Security.