Encrypted in your browser. Readable once. Then destroyed forever. We never see your data.
Vanish your secrets safely with VanishingVault - secure one-time secret sharing
How it works
Your secret is encrypted in your browser with AES-256-GCM before any network call.
Only the encrypted blob and IV reach our Cloudflare KV store. The key never leaves your device.
The decryption key lives in the URL fragment, which browsers never send to servers.
On first view, the recipient decrypts locally and the ciphertext is permanently deleted.
We mathematically cannot read your secrets. The architecture makes it impossible. Your data is encrypted before it leaves your device, and the key never touches our servers.
Why VanishingVault?
Most services ask you to trust their privacy policy. We built a system where trust is irrelevant — the math prevents us from seeing your data, even if we wanted to.
AES-256-GCM runs in your browser before any network request. Your plaintext never leaves your device.
The decryption key lives in the URL fragment, which browsers never transmit to servers.
Permanently destroyed on first view, or automatically after seven days. No recovery possible.
No IP tracking, no behavior profiling, no cookies required. We don't want your metadata.
Our encryption implementation is open for audit. Verify the code does what we claim it does.
Share secrets instantly without creating an account, verifying an email, or handing over personal data.
Built for teams
Onboarding a contractor? Sharing API keys with a teammate? Send a one-time link that self-destructs after reading. No Slack history, no email trail, no permanent record.
From the blog
Best free one-time secret sharing tools compared: VanishingVault, Bitwarden Send, OneTimeSecret, Privnote. Client-side vs server-side encryption, no-account handoffs, and honest limits.
Read articleMicrosoft Teams encrypts in transit and at rest but chat is NOT end-to-end encrypted. E2EE is optional for 1:1 call media and Premium meetings only. Customer Key ≠ E2EE.
Read articleBitwarden Send vs dedicated one-time secret tools for sending a password once. Fit table: encryption, accounts, access password, files, burn-after-read, and guest UX.
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