Send & request files

WeTransfer-style transfers with one difference: everything is encrypted in your browser, so we never see your file or your key.

Send a file

On the home page, choose a file (up to 2 GB, free, no account), then either Create link or Send email. The file is encrypted in your browser before upload; the recipient opens it with a single link that carries the key in its #fragment.

• Free links last 3 days. Paid plans set their own validity (up to 365 days).
• Because the key never reaches us, the link can only be shared by you — we can't re-send it.

Request files

Switch to the Receive tab to request files from someone. CloudBox generates a keypair in your browser; the private key stays in your manage-link. The sender encrypts to your public key, so their upload is zero-knowledge end to end — even the filename is encrypted.