Lock a PDF with a password
Type a password and we lock the file with strong encryption.
Your files never leave your device. Everything happens in your browser.
This file is locked with a password
Type the password to open it on your device. We never crack passwords or send them anywhere.
Keep it safe: if you forget it, nobody can open the file.
Ready!
Questions people ask
What if I forget the password?
Nobody can open it, us included. Keep the password somewhere safe.
Does the password reach you?
No. Locking happens on your device; the password never leaves it.
Which apps open it?
Any modern PDF app: iPhone, Android, Chrome and Adobe. It asks for the password when opened.
Are my files uploaded to your site?
No. Everything happens inside your browser, on your device; the file never leaves it. Even if you go offline after the page opens, the tool still works.
Is there a daily limit or a watermark?
No. Free, no sign-up, no limit, and we never add a mark to your file.