Encrypt PDF

Protect your PDF with 256-bit AES encryption. Add password protection and set usage restrictions.

Click to select PDF or drag and drop

Your files never leave your device.

How It Works

1

Upload your PDF

Drag and drop or click to select your PDF file.

2

Set your password

Enter a secure password to protect your PDF.

3

Download encrypted

Get your password-protected PDF instantly.

Why SwiftPDFLab?

100% Client-Side

All encryption happens in your browser. Files and passwords never touch our servers.

256-bit AES

Bank-grade encryption. The same standard used by governments worldwide.

No Account Needed

Start immediately. No sign-up, no email required.

Free Forever

No trials, no premium tiers. Every feature is completely free.

Frequently Asked Questions

Is this PDF encryptor free?

Yes, completely free with no limits. No subscription or hidden fees.

Are my documents uploaded to a server?

No, all encryption happens locally in your browser. Your files and passwords never leave your device.

What encryption strength is used?

256-bit AES encryption, the highest security standard used by banks and governments.

Can I set permissions on the PDF?

Yes, with an owner password you can control printing, copying, and editing permissions.

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