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Free · 100% Private · No Upload

Password Protect a PDF — Free, AES-256

Encrypt a PDF with AES-256 and set a password, with fine-grained control over printing, copying, and editing permissions.

🔒 Files never leave your device ⚡ No signup required 💯 Completely free
🔐 Launch PDF Password Protection — Free →
Opens instantly in your browser. No install, no account.
How it works
1
Upload your PDF
Drop in the PDF you want to protect.
2
Set passwords & permissions
Choose a user password (to open) and optionally an owner password with specific permissions.
3
Download the encrypted PDF
Get a fully encrypted PDF that works in all standard PDF viewers.
Why PDF Password Protection
✓AES-256 encryption (V5/R6)
✓Separate user and owner passwords
✓Fine-grained permissions — print, copy, edit
✓Works in all standard PDF viewers
✓100% local — file never uploaded
✓Instant processing, no waiting
Frequently asked questions
What encryption does it use?

AES-256 (V5/R6), the modern standard supported by all major PDF viewers.

What's the difference between user and owner passwords?

The user password is required to open the file; the owner password controls permissions like printing, copying, and editing.

Can I restrict printing or copying?

Yes, fine-grained permissions let you control exactly what a viewer can do with the file.

Is my PDF uploaded to encrypt it?

No — encryption happens entirely in your browser, so your file and password never leave your device.

Is it free?

Yes, completely free with no limits.

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