Paste a password, API key, or private note. Get a one-time link.
Every design decision serves one purpose: make sure secrets are readable exactly once, then gone.
AES-256-GCM encryption happens locally. The key never leaves your device.
The server receives encrypted data it can never read. The decryption key lives in the link's # fragment.
Opening the link decrypts the message locally and permanently deletes it from the server in one atomic operation.
From onboarding new hires to rotating production credentials, sensitive data moves through organizations every day.
Share API keys, SSH credentials, and production configs without leaving traces in Slack or email threads.
Send onboarding credentials, temporary system access, and confidential communications securely.
Transmit account credentials, settlement terms, and confidential case information with one-time access.
Share client credentials, project access, and sensitive deliverables without persistent records.
Your message is encrypted in your browser using AES-256-GCM before it reaches our server. The decryption key lives in the URL fragment (#) which browsers never send to servers. We literally cannot read your secrets.
No. The server only stores encrypted ciphertext. The decryption key is embedded in the link fragment and never transmitted to the server. Even if our database were compromised, your secrets remain private.
Unread messages automatically expire based on your selected TTL (1 hour, 24 hours, or 7 days) and are permanently deleted from our servers.
Yes! You can add an optional passphrase that the recipient must enter before decryption. The passphrase derives the encryption key via PBKDF2 with 600,000 iterations, adding a strong second layer of protection.
BytesBit Secure Share offers a generous free tier with no sign-up required. Core features including encryption, passphrase protection, and file attachments are available at no cost.