Protect PDF
Lock a PDF with a password.
Your files never leave your device: everything happens in your browser.
How to Protect PDF
- Choose your file, or drop it on the box.
- Type the password twice and choose what readers may do.
- Press Start, then download the result.
Protect PDF encrypts your PDF with 256-bit AES, the strongest PDF encryption, so it opens only with the password you choose. You can also stop printing, copying the text or making changes. The file is locked on your device; the password is never sent anywhere.
Frequently asked questions
Is it free?
Yes. Every tool here is free to use, with no sign-up and no watermark on your files.
Are my files uploaded?
No. The tools work inside your browser, so your files stay on your device and nobody else can see them.
Is there a limit?
Free use allows files up to 100 MB and up to 20 files at a time for most tools.
Does it work on my phone?
Yes. It works in any modern browser on phones, tablets and computers.
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