Password-protect PDF

Encrypt a PDF with AES-256. Everything happens locally in your browser.

Drop a PDF

or click to browse - files stay on your device

Max file size: 100 MB

User password (required to open)Owner password (permissions; optional)

Permissions Allow printing Allow copy / extract text Allow modify / annotate / fill forms

Uses AES-256. Lose this password and the PDF cannot be recovered.

About this tool

Add or remove a password on a PDF. Locks the document so only people with the password can open it.

Features

Add open password
Remove password (when known)
AES-256 encryption
Browser-only

How to use it

Upload a PDF.
Enter a password to set or remove.
Download the new PDF.

🔒 100% private

Everything happens inside your browser using JavaScript and WebAssembly. Your files are never uploaded to a server, never stored, and never seen by us.

Frequently asked questions

Can you crack a forgotten password?

No - strong PDF encryption is not reversible without the password.