Password Protect a PDF
Add a password to a PDF for free. The file is encrypted with AES-256 in your browser and never uploaded. Optionally block printing, copying and changes.
- Free
- No sign-up
- Nothing is uploaded
Related tools
Key Features
- Encrypts the PDF with AES-256, the strongest standard for PDFs
- Anyone who opens the file needs the password
- Optionally blocks printing, copying text and changes
- Works with Adobe Reader, Chrome, Edge, Preview and phone PDF apps
- The password never leaves your device
- No sign-up and no watermark
How to Use
- 1Drop your PDF onto the box or choose it.
- 2Type a password twice.
- 3Choose what people may do with the file.
- 4Click "Protect PDF" to download the locked file.
Your privacy
Your PDF and its password stay in your browser. The file is encrypted on your device, so neither is sent anywhere.
Frequently Asked Questions
How strong is the protection?
The file is encrypted with AES-256. With a long password that is hard to guess, the content cannot be read without it.
What if I forget the password?
Then the file cannot be opened. Nobody, including this site, can recover the password, so keep it somewhere safe.
Do the printing and copying limits always work?
Most PDF apps follow them, but some ignore them. The password is what keeps the content private.