100% Browser-Based • No Upload • Free

Free PDF Protector Encrypt with Password

Add password protection to your PDF documents. Prevent unauthorized access with strong encryption — all processed in your browser.

Protect PDF Free All Tools
No sign-up required to try • No files uploaded • Free forever

How It Works

1
Select or drop your file
2
Processed in your browser — nothing uploaded
3
Download the result — done!
Key Features

Why Use UniTrack PDF Protector

Secure sensitive documents with military-grade encryption — entirely on your device.

Strong Encryption

AES-256 encryption protects your PDF with industry-standard security used by banks and governments.

Custom Password

Set your own password. Recipients will need to enter it to open or print the document.

Client-Side Security

Encryption happens in your browser — your password and document are never sent to any server.

Your Data Never Leaves Your Browser

Unlike other online tools, we don't upload your files to our servers. Everything is processed using JavaScript directly in your browser. When you close the tab, your data is gone. Zero tracking, zero risk.

0
Server uploads
0
Data stored
0
Tracking
FAQ

Frequently Asked Questions

We use AES-256 encryption, the same standard used by financial institutions and government agencies. Without the password, the document cannot be opened.

Yes, if you know the password. Open the protected PDF with the password, then save it without protection using a PDF reader.

No. Your password is used only during encryption in your browser and is never transmitted or stored. Make sure to remember it — we cannot recover it for you.

Protect Your PDFs for Free

Add password encryption to your documents — no upload, no signup, no limits.

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No sign-up required 100% browser-based Free forever