Password protect, or remove a password
Add a password to a copy of a PDF, or take one off. Both happen in this tab, on your device.
Password is part of Pro — $14.99 once, not a subscription. Every free tool here already opens a password-protected file if you have its password.
Drop a PDF here
or click to choose one — you will be told what this file's lock is before anything is typed
The password never leaves this tab: your own browser uses it here to derive the file’s key. It is not sent anywhere, not stored, and not written into the file you save.
Working on your device
Every string and stream in the document is being rewritten here, in this tab.
Done — on this device