PDF Password Protector
Lock your PDF with a password in seconds. Free, private, no signup.
Use 12+ characters with letters, numbers and symbols.
How to password protect a PDF online
- Upload your PDF into the box above.
- Type a password, or click Generate for a strong random one.
- Choose whether people may print, copy or edit, then click Protect PDF.
- Download your locked PDF. It asks for the password every time it is opened.
Why use this PDF encryption tool?
- Private by design: encryption happens in your browser, so your document and password are never uploaded.
- Free and unlimited: no account, no watermark, no daily limit.
- Smart extras: password strength meter, one-click password generator and permission controls.
- Works on any device: Windows, Mac, Android, iPhone and Linux.
Frequently asked questions
Is it safe to protect my PDF here?
Yes. The file is processed locally on your device and is not sent to any server.
What if I forget the password?
It cannot be recovered. Save the password in a password manager before sharing the file.
Will the protected PDF open in Adobe, Chrome and phones?
Yes. Standard PDF readers ask for the password before showing the content.
Are the print, copy and edit limits unbreakable?
No. Those limits depend on the PDF viewer respecting them and some tools ignore them. The open password is what truly keeps the content private.
