Add a password to a PDF, or remove one you already know — encryption happens entirely in your browser, your file is never uploaded.
Drag & drop a PDF here
or
Up to 100 MB. The password you set is required to open the file — keep it somewhere safe, it cannot be recovered.
Drag & drop a password-protected PDF here
or
Up to 100 MB. You must already know the password — this tool removes it, it does not crack or bypass unknown passwords.
Both encrypting and decrypting happen entirely in your browser using JavaScript — your PDF and password are never uploaded or sent to any server.
Adding a password applies standard AES-based PDF encryption, the same protection used by Adobe Acrobat and other PDF software — not just a cosmetic lock.
To remove protection you must already know the current password. This tool decrypts and re-saves the file without it — it cannot crack or guess an unknown password.
There's no recovery option for a password you set here — if you forget it, the protected PDF cannot be opened by anyone, including us.
Page content, images, formatting and page order are all preserved exactly — only the file's access protection changes.
Protect or unlock as many PDFs as you like — no sign-up, no watermark, no page limit.