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bpad
Capture notes privately. The server can't read them.
bpad is an open-source, encrypted note-taking PWA for desktop and mobile that works offline. Notes are encrypted in your browser using Argon2id + AES-256-GCM before leaving your device. Only unreadable ciphertext reaches the server, meaning your notes are always at your fingertips across all your devices, yet completely private and unreadable to anyone else.
Hey Product Hunt 👋
I built bpad because I wanted a dead-simple place to dump notes without trusting a server to keep them secret. So I made the server incapable of reading them.
How it works:
- Your notes are encrypted in the browser with Argon2id (key derivation) + AES-256-GCM before anything is sent. The backend only ever stores iv + ciphertext — it's a zero-knowledge store by design.
- Your password never leaves your device; the server gets a verifier, not the key.
- Optional biometric unlock via WebAuthn PRF.
- Installable PWA, reads offline, and you can export an encrypted backup so you're never locked out.
Honest disclaimer: this is a personal project, not a company. I did a careful security review of the crypto/auth surface myself, but it hasn't had a formal external audit — so kick the tyres and tell me where it breaks. It's fully open source (AGPL-3.0) if you'd rather read the code than trust me: github.com/garnetstar-pro/bpad
Would genuinely love feedback on the threat model and the UX. Thanks for taking a look 🙏
About bpad on Product Hunt
“Capture notes privately. The server can't read them.”
bpad was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #137 on the daily leaderboard. bpad is an open-source, encrypted note-taking PWA for desktop and mobile that works offline. Notes are encrypted in your browser using Argon2id + AES-256-GCM before leaving your device. Only unreadable ciphertext reaches the server, meaning your notes are always at your fingertips across all your devices, yet completely private and unreadable to anyone else.
On the analytics side, bpad competes within Productivity, Notes, Privacy and Encryption — topics that collectively have 678.5k followers on Product Hunt. The dashboard above tracks how bpad performed against the three products that launched closest to it on the same day.
Who hunted bpad?
bpad was hunted by Jan Macháček. 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.
For a complete overview of bpad including community comment highlights and product details, visit the product overview.
Jan Macháček