Password Protect PDF
Encrypt your PDF with a password. Your file is processed entirely in your browser — it never leaves your device.
Reading document...
document.pdf
—
Required to open and view the PDF.
A separate password to control permissions (printing, copying, etc.).
Restrict Permissions
AES-256 encryption. Processed 100% in your browser. Your file is never uploaded.
PDF Protected!
Your encrypted PDF has been downloaded. What would you like to do next?
About this tool
Password Protect Your PDF — Free, Private & Secure
Sending a contract, invoice, or personal document? Lock it with a password so only the right person can open it. You can also block printing, copying, or editing — all without installing software or uploading your file.
AES-256 Encryption
The same encryption standard used by banks and governments. Nobody can open the file without the password you set.
Fine-Grained Permissions
Choose exactly what the recipient can do — allow viewing but block printing, or allow printing but block copying text. It's up to you.
Completely Private
The encryption happens in your browser. Your file and password never leave your computer — no server, no cloud, no risk.
How to password protect a PDF
- 1
Open your PDF
Click "Select PDF File" or drag your document onto the page.
- 2
Set a password and permissions
Type your chosen password and decide whether to allow or block printing, copying, and editing.
- 3
Download the protected file
Click "Encrypt & Download" and your locked PDF saves to your device. Share it knowing only someone with the password can access it.
Frequently asked questions
How strong is the encryption?
AES-256, the same standard used by banks, governments, and security software. It would take billions of years to crack with current technology.
Can someone bypass the print/copy restrictions?
Permission restrictions rely on PDF viewers honoring them. Most legitimate software (Adobe Reader, Preview, Chrome) respects these settings. A determined technical user could potentially bypass them, but the open password (required to view the file) cannot be bypassed.
Is my file or password stored anywhere?
No. Everything happens in your browser. Your document and your password never leave your computer. We don't store, log, or transmit anything.
What if I forget the password?
There's no way to recover a forgotten password — that's what makes AES-256 secure. Keep your password somewhere safe. If you lose it, you'll need the original unprotected file.
Is it free?
Completely free — no account, no watermarks, no limits.