🔒 AES-256 · Runs in your browser

Protect your PDF with a real password.

Add genuine, industry-standard AES-256 encryption to any PDF — the same algorithm banks and law firms use. Your file is never uploaded: encryption happens entirely on your device.

Drop your PDF here, or click to browse

Nothing is uploaded — your file stays on this device

PDF

document.pdf

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Password to open the PDF

Anyone opening this PDF will need this password. Leave blank if you only want to restrict permissions below, without locking the file open.

Owner password (optional)

Controls who can change permissions below. If left blank, we generate a secure random owner password for you.

Permissions

Allow printing Allow copying text Allow editing Allow comments

Initializing encryption engine…

No file upload, ever Real AES-256 encryption Free, no sign-up

Good to know

Is this real encryption, or just a "view-only" trick?

This is genuine AES-256 PDF encryption using QPDF, the same open-source engine trusted by enterprise document tools. The file is cryptographically locked — it cannot be opened in any PDF reader without the correct password.

Does my file ever leave my computer?

No. The entire encryption process runs inside your browser using WebAssembly. VaultPDF never sees, stores, or transmits your document.

What happens if I forget the password?

There is no recovery. Because encryption is real, VaultPDF has no way to unlock the file for you — store your password somewhere safe.

What's the difference between the two passwords?

The password to open the PDF is required by anyone viewing the file. The owner password only controls permissions (printing, copying, editing) and is optional — most people only need the first one.