Private Note Sharing Tool

About Private Note Sharing Tool

Sharing a password, API key, or other sensitive text over chat or email leaves a permanent copy sitting in that platform's message history indefinitely. A self-destructing note is meant to solve that — a link that shows the secret once and then behaves as if it's gone.

This tool encrypts your note entirely in your browser using AES-256-GCM, then packs both the encrypted data and the decryption key into the link itself, after the # symbol (a URL fragment). Browsers never send URL fragments to a server — not even to this site's own server — so the encrypted note and its key travel only in the link you share, never touching any backend.

Because there's no server-side storage involved, the 'self-destruct' behavior has an honest limitation worth understanding clearly: once someone opens the link and marks it read, that specific browser remembers not to show it again — but the link itself keeps working if opened from a different browser or device, since nothing was ever actually deleted from a server (there's no server involved at all). This is a genuinely different guarantee than a server-backed one-time-view system, and this tool is upfront about that trade-off rather than overpromising.

This is useful for sharing a password or short-lived credential with a colleague without leaving a permanent copy in chat history, sending a sensitive note through a channel where you'd rather not have persistent plaintext sitting around, and any situation wanting client-side encryption without a backend service holding your data even temporarily.

How it works

1. Type your secret note. Encrypted with AES-256-GCM entirely in your browser.
2. Get a shareable link. The encrypted note and its key both live only in the link's URL fragment.
3. Recipient opens it once. They read the note, then mark it destroyed in their own browser.