ZeroSecret

ZeroSecret lets you send private messages that self-destruct after a single view. No accounts, no sign-ups, no data collection — just end-to-end encrypted notes that disappear forever once read. HOW IT WORKS Write your secret message in the app. ZeroSecret encrypts it on your device using AES-256-GCM military-grade encryption before anything leaves your phone. You get a unique link to share with your recipient. The encryption key exists only inside that link — our servers never see it. When the recipient opens the link, the message is decrypted locally and permanently deleted from the server. One view, then gone. No trace remains. ZERO KNOWLEDGE ARCHITECTURE ZeroSecret is built so that even we cannot read your messages. The server only stores meaningless encrypted blobs. The decryption key lives exclusively in the shareable link and is never transmitted to or stored on our servers. This isn't a marketing claim — it's how the cryptography works. KEY FEATURES · AES-256-GCM end-to-end encryption · Self-destructing messages — deleted after one view · Optional password protection for an extra security layer · Configurable expiry — 1 hour, 24 hours, 3 days, or 7 days · No accounts, no emails, no phone numbers required · No analytics, no tracking, no ads · Works cross-platform — share links to anyone with a browser · Universal Links — recipients with the app open notes instantly · Full web app at zerosecret.org for browser-based access · Dark, light, and system theme support WHO IT'S FOR · Share passwords, API keys, or credentials securely · Send sensitive personal information that shouldn't persist · Share confidential business details with a colleague · Send anything you'd rather not exist in a chat history PRIVACY BY DESIGN No data is collected. No accounts exist to breach. IP addresses are used only for rate limiting and are never stored. Notes auto-expire even if never opened. After deletion, recovery is impossible — by anyone, including us. Built on Cloudflare's global edge network with 300+ locations worldwide for fast, reliable delivery.