Zero-knowledge
Zero-knowledge file sharing for private transfers.
Send files with an architecture designed so the service stores encrypted data but does not receive the decryption key.
What zero-knowledge means here
Zero-knowledge means SecureTransfer is not given the information needed to read uploaded files. The browser encrypts before upload, and the decryption key is carried in the URL fragment.
What zero-knowledge does not mean
It does not mean every risk disappears. Recipients can still download and copy files, and you still need to send links to the right people. It means the provider is not a reader of the file contents.
When to use it
- Client work and deliverables
- Private documents
- Financial files
- Anything you would not want a storage provider to inspect
Frequently asked questions
- Is SecureTransfer end-to-end encrypted?
- Yes. Files are encrypted in your browser before upload and decrypted in the recipient’s browser.
- Can SecureTransfer read my files?
- No. The decryption key is stored in the URL fragment, which is not sent to the server.
- Do recipients need an account?
- No. Recipients can open the secure link and download without creating an account.
- How long do files stay available?
- You choose an expiry from short-lived links to longer storage options; files are deleted after expiry.
- Can I set download limits?
- Yes. You can set a maximum number of downloads for a transfer.
Ready to send private files?
Upload files from your browser, choose expiry and download limits, then share an encrypted link. Recipients do not need an account.
Send a secure file →