PDF Password Protection
Drop your PDF here
or
PDF files up to 100MB
Set a password to protect, encrypt, and lock your PDF. Restrict access to sensitive documents. Your file never leaves your device.
Your Files Stay Safe
Your files are processed right on your device. Nothing is uploaded to the internet.
Never Leaves Your Device
Your files are processed on your own computer or phone — never sent online
No Sign-up Needed
No account, no login, no email required
Automatically Cleared
After processing, your file data is instantly erased
Why pattopdf?
No Waiting
Files aren't uploaded anywhere, so processing finishes right away.
Completely Free
No limits. Use as many times as you want, forever.
Safe & Private
Your files stay on your device. Nothing is ever sent to an external server.
FAQ
What kind of password protection is applied?
A password is required to open the PDF. Anyone without the password cannot view the file.
Is there a password length limit?
There is no strict limit, but we recommend at least 8 characters with a mix of letters, numbers, and symbols for security.
What if I forget the password?
Passwords cannot be recovered by pattopdf. Please store your password in a safe place.