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Share your thoughts securely with the world. Create end-to-end encrypted notes that self-destruct immediately after reading. Zero-knowledge architecture.
Hey Product Hunt! 👋
I’m thrilled to introduce LockNotes, the latest release out of Webrizen.
We wanted to build a one-time secret app that didn't just function as a basic utility, but actually pushed the boundaries of both web cryptography and frontend design.
The Architecture (Zero-Knowledge):
Most anonymous messaging apps require you to trust the server. We removed trust from the equation. When you type a note, it is encrypted locally in your browser using AES-GCM 256-bit encryption. The decryption key is attached to your shareable URL as a hash fragment (#key). Because browsers never send hash fragments to the server, it is mathematically impossible for us to read your payload. When the recipient opens the link, an atomic PostgreSQL transaction instantly nukes the row before decrypting it locally.
The Design Language:
We wanted the user experience to be unforgettable. The creation page features a custom WebGL fragment shader animated with GSAP, designed to evoke the lush, ethereal skies and volumetric lighting of modern Japanese animation films. However, the moment the recipient opens the link to read the secret, the UI instantly snaps into a strict, high-contrast, DX-inspired technical grid to reflect the secure, raw nature of the decrypted payload.
Stack: Next.js, Supabase (with custom RPCs), GSAP/Framer Motion, and Transformers.js (for on-device AI toxicity filtering to prevent abuse).
I would love to hear your thoughts on the zero-knowledge implementation, the UI transitions, or the tech stack. I’ll be hanging out in the comments all day to answer your questions!
It would be great to have a "view once" override option where the sender can choose a custom expiration window, like 5 minutes or 1 hour, instead of only immediate self-destruct. Sometimes people want to give the recipient a little time to re-read, but still have it disappear afterward.
Sent a note to myself and it really did vanish after one read, which is kind of eerie but cool. The interface is clean and the zero-knowledge setup gave me peace of mind.
would be cool if you could set a custom expiry time instead of it always being immediate, like give the recipient 5 minutes or an hour to re-read it if needed.
About LockNotes on Product Hunt
“Secure, Anonymous, Self-Destructing Notes”
LockNotes was submitted on Product Hunt and earned 7 upvotes and 4 comments, placing #149 on the daily leaderboard. Share your thoughts securely with the world. Create end-to-end encrypted notes that self-destruct immediately after reading. Zero-knowledge architecture.
LockNotes was featured in Messaging (51.9k followers), Notes (8.3k followers) and Privacy (11.2k followers) on Product Hunt. Together, these topics include over 25.3k products, making this a competitive space to launch in.
Who hunted LockNotes?
LockNotes was hunted by Webrizen. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how LockNotes stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
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