Lock a PDF with a password in seconds, right in your browser. Encryption runs locally, so sensitive documents never leave your device. Includes how to remove a password later.
Anyone who receives a PDF can read it — unless it is encrypted. Password protection encrypts the file so that opening it requires the password. There are two common setups: a user password that is required just to open the file, and a permissions password that blocks printing or copying while still letting people read. For most people, the open password is the one that matters: no password, no reading.
The same tool removes protection: upload the password-protected file, enter the password, and download an unlocked copy. This works with files you have the password for — which is exactly the case you are in when you protected your own document and later decide it does not need a lock anymore.
Encryption runs on your device, so the password and the file never travel over the network. For a document that is sensitive enough to lock, that privacy detail matters as much as the lock itself.
A 50 MB report with hundreds of embedded images encrypts just fine but is clumsy to share. Compress the PDF first to bring it down to a few megabytes, then protect the compressed copy — smaller, faster to send, and equally locked.