Lock your PDF with a password. Anyone who opens the file will need the password to see it.
How to use Protect PDF
- Select a PDF file.
- Type a strong password twice.
- Download the protected PDF and keep the password safe.
Features
- Free: no signup, no limits and no watermark added by us.
- Private: Your files are processed on your device and are never uploaded to any server.
- Works everywhere: on Android, iPhone, Windows and Mac, right in your browser.
- Standard PDF password encryption.
Frequently asked questions
Is Protect PDF free?
Yes, it is completely free. There is no signup and no daily limit.
Are my files uploaded?
Your files are processed on your device and are never uploaded to any server.
Does it work on my phone?
Yes. Open this page in Chrome, Safari or any modern browser on your phone. Large files may take longer on older phones.
What if I forget the password?
We never see or store your password, so it cannot be recovered. Keep a copy of the original file.