Protect PDF With Password
Encrypt a PDF with a password so only the right people can open it.
Drop a PDF here or click to browse
Your file stays on your device — nothing is uploaded.
The password will be required every time this PDF is opened. There is no way to recover a lost password — keep it somewhere safe.
100% private — your files are processed in your browser and never uploaded to a server.
The Protect PDF With Password tool encrypts a document so it requires a password to open. Set your password, and download a secured PDF that keeps its contents private. The encryption happens in your browser, so the file is never uploaded.
Why use this tool
Password encryption
Lock the PDF so only people with the password can open it.
Secure by default
The protection is applied locally — your file is never uploaded.
Free and simple
Encrypt PDFs in seconds with no account or watermark.
How to use it
Open your PDF
Select the PDF you want to password-protect.
Set a password
Choose a strong password that will be required to open the file.
Download the result
Save the encrypted, password-protected PDF.
Frequently asked questions
What happens if I forget the password?+
There is no recovery — the PDF cannot be opened without it, so store the password safely.
Is my PDF uploaded anywhere?+
No. The encryption runs in your browser, so your document never leaves your device.
Will the protected PDF open everywhere?+
Yes. Standard PDF viewers will prompt for the password before showing the document.
Is the tool free?+
Yes, completely free with no sign-up and no watermark.