Lockbox

Lock files with a password · Free utilities app for your browser

Lock files with a password, so only someone with the password can open them. Everything happens in your browser: nothing is uploaded, and Yuzool never sees a file or a password. Drop in pictures, PDFs, documents or a whole folder, type a password or tap Make one for me for five random words, and Lockbox locks them with AES-256 into one box. Send the small .lockbox file, which opens on yuzool.com/lockbox on any phone or computer, or a self-opening file that unlocks itself in any browser with no website and no internet. For a short secret, such as a Wi-Fi password or a door code, Lock a note puts it inside a link that asks for the password. Unlocking shows pictures, PDFs and text before you save them, and Save all gives you a zip. A wrong password says so, and a box that has been changed or cut short refuses to open.

  • Lock any files with a password, in your browser
  • Nothing uploaded: Yuzool never sees a file or a password
  • A self-opening file that needs no website or internet
  • A locked note inside a link, for Wi-Fi passwords and codes
  • Make one for me: a five-word password, and a strength meter
  • AES-256 with a published format anyone can check
  • Works offline
  • Private: stays on your device
  • No account or sign-up

Free to use. Optional one-time upgrade: Lockbox Pro, $1.99 (no subscription), or every upgrade in every Yuzool app with Yuzool Plus, $19.99 once. Works on iPhone, Android, Mac and PC; add it to your Home Screen to open it like an app.

Guides: Encrypt a PDF with a password · How to password protect a file · Self-opening encrypted file · Send a file securely without uploading it

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