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Privnote - Self-Destruct Notes
Write a secret note, get a one-time link. The note is encrypted in your browser and self-destructs after the recipient reads it.
Your note is encrypted with AES-256-GCM in your browser before the link is created. The encryption key is embedded in the link and never sent to any server.
How it works
- Write your note and click Create Secret Link.
- Share the generated link with the recipient.
- When they open the link, the note is decrypted and displayed once.
- The link is immediately invalidated - reloading shows a destroyed message.
Frequently Asked Questions
How does the self-destruct work?
The note is encrypted and the key is embedded in the URL fragment. When the recipient opens the link, the note decrypts, displays, and the URL is immediately replaced with a destroyed state. Anyone who revisits that URL sees only a destroyed message.
Is the note stored on a server?
No. The entire encrypted note and its decryption key exist only in the URL itself. Nothing is stored on any server or database. The link is the note.
Can the sender re-read the note?
Not through the original link - once opened, the URL is invalidated in the browser. However, if someone copied the original URL before sharing it, they could still decrypt it. For maximum security, do not keep a copy of the link after sharing.
What encryption is used?
AES-256-GCM, a modern authenticated encryption standard used in TLS, banking, and government systems. Encryption happens entirely in your browser using the Web Crypto API.
What should I use Privnote for?
Sharing passwords, API keys, PINs, access codes, or any sensitive text you want to send once and have expire. It is much safer than sending sensitive info in email or chat where it stays permanently.
Is Privnote free?
Yes. Completely free with no account, no sign-up, and no note size limits (within browser memory).
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