Protect a PDF with a Password
Encrypt a PDF so that it asks for a password to open. Encryption happens in your browser.
How to use Protect PDF
- Select your PDF.
- Enter a password and confirm it.
- Click Protect PDF, download the file and keep your password safe.
Frequently asked questions
What encryption is used?
AES-256, the strongest standard PDF encryption. Older PDF viewers may not be able to open it.
What if I forget the password?
The file cannot be recovered. We do not receive or store your password.
Is my password sent anywhere?
No. It is used inside your browser to encrypt the file.
Are my files uploaded to your server?
No. This tool runs in your browser using JavaScript that is served from this website. Your file is read on your own device and the result is created there too. File contents are not sent to this website.
Results may differ slightly from the original file. Always check the output before using it.