Sometimes you need to lock a PDF with a password before sending; other times you have a locked PDF and need to unlock it (with the password). Doing this online avoids installing PDF software. A single tool that can both lock and unlock is especially handy.
To lock: upload the PDF, set a password, download the protected file. To unlock: upload the locked PDF, enter the password, download the unlocked file. For sensitive documents, choose a tool that processes in the browser so the file isn’t stored on a server.
Use our Lock / Unlock PDF tool to add or remove PDF passwords—free and private.