Protect / Unlock PDF
Add or remove a PDF password privately in your browser — free and instant.
Protect / Unlock PDF
Add or remove a PDF password privately in your browser.
Drag & drop a PDF, or click to browse
Processed locally · AES-256 protect
Why use Protect / Unlock PDF
Quick password security for PDFs without uploading files to a server.
Password Protect PDF
Add a user password so the PDF requires credentials to open.
Unlock PDF
Remove password protection when you know the correct password.
AES-256 Encryption
Uses modern AES-256 PDF encryption for protect mode.
Private in Browser
Your PDF and password never leave your device.
Fast & Free
Protect or unlock PDFs instantly with no signup.
Instant Download
Download the secured or unlocked PDF immediately.
How to Use
Simple 4-step process
Step 1
Upload your PDF file.
Step 2
Choose Protect or Unlock mode.
Step 3
Enter the password (and confirm when protecting).
Step 4
Download the resulting PDF.
Frequently Asked Questions
Everything you need to know about this tool and how it works.
See Full FAQNo. Encryption and decryption run entirely in your browser.
Protect mode uses AES-256 PDF encryption with a user password required to open the file.
Unlock works when you know the correct password and the PDF uses a compatible encryption scheme (including files protected with this tool). Wrong passwords are rejected.
This tool cannot recover lost passwords. You’ll need the original password from whoever protected the file.
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