Send Files Securely with Encrypted One-Time Links
Why use one-time encrypted file sharing?
Regular file sharing leaves copies sitting in chat history, email inboxes, and cloud folders for far longer than necessary. 1time.io is built for the opposite use case: deliver a sensitive file once, let the recipient download it, and remove it from the server.
Encrypted before upload
The browser encrypts the file first. The server only receives encrypted bytes.
Optional passphrase
Add a second factor so the link alone is not enough to decrypt the file.
One-time download
Once the recipient downloads the file, the stored copy is deleted from the server.
Text Secret Sharing
Need to send a password, API key, or short note instead of a file? Use secure password sharing.
What secure file sharing is good for
This page is best for one-off handoffs: configuration exports, client certificates, NDA PDFs, database backups, screenshots with sensitive data, support bundles, and internal documents that should not live forever in Slack, email, or a shared drive.
How the encrypted file flow works
Choose a file, optionally add a passphrase, and create the link. The browser packs the file together with its metadata, encrypts the whole payload locally, and uploads only the encrypted blob. The recipient gets a one-time download link. On open, the browser decrypts the file locally and the server-side copy is destroyed.
Frequently asked questions
How does secure file sharing work on 1time.io?
Your file is packed and encrypted in the browser before upload. The server stores only encrypted bytes. The download link works once, and the file is deleted after it is downloaded or when the expiry time is reached.
Can the server see my file name or contents?
No. The file contents and file metadata stay inside the encrypted payload. For now, the filename, MIME type, and size are not stored separately on the server.
Can I protect the file link with an extra passphrase?
Yes. Add an optional passphrase when creating the link. The recipient will need both the link and that passphrase to decrypt the file.
What files can I send securely?
Any file up to 10 MB, including PDFs, text files, archives, certificates, configuration exports, screenshots, and private documents.