Encrypted Note Taking
Every other note app asks you to trust them with your data. xNotePadAI takes a different position: trust isn't required. Your notes are encrypted in your browser before they go anywhere. The system is designed so that even we cannot access your content — privacy isn't a feature, it's the architecture.
Encrypt Before Storage
Notes are encrypted the moment you save. Whether stored locally or synced to another device, the content is always ciphertext — never plaintext on any server.
Works Without Internet
All encryption and decryption happens locally. Read and write encrypted notes without any network connection. The app is a full offline-capable PWA.
Rich Editor Experience
Encryption doesn't mean sacrifice. Full rich text editor with Markdown support, templates, attachments, voice dictation — all the features you'd expect, all encrypted.
Multi-Device Sync
Sync across phones, tablets, and computers. Every synced payload is encrypted — the sync server is just a relay that stores meaningless ciphertext.
Secure Sharing
Share notes via link with optional password protection and expiration dates. Recipients read a decrypted copy — your original stays encrypted and private.
AI That Respects Boundaries
AI features are available when you want them. Mark sections as confidential to exclude them from AI processing. Every AI change requires your approval via a visible diff.
How does xNotePadAI compare to Standard Notes?
Standard Notes also offers encryption, but charges for advanced editors, has no AI features, no knowledge graph, no MCP server, and no semantic search. xNotePadAI gives you all of those features free while maintaining the same zero-knowledge encryption standard. Both are solid privacy choices — xNotePadAI adds AI intelligence on top.
Private from the first keystroke. No signup, no tracking, no exceptions.
Frequently Asked Questions
What encryption algorithm is used?
AES-256-GCM (Advanced Encryption Standard with 256-bit keys in Galois/Counter Mode). The key is derived from your password using PBKDF2-SHA256 with 600,000 iterations. This is the same standard used by banking and military applications.
Can I use encrypted note taking without AI?
Absolutely. AI features are optional. You can use xNotePadAI purely as an encrypted notepad — write, organise, sync, and share without ever touching the AI features. They're there when you want them.
What happens to my notes if I clear my browser?
If you use only localStorage (no sync), clearing your browser data deletes your notes permanently. With encrypted sync enabled, your notes are stored as encrypted backups on the server and can be restored on any device with your password.
Is the encryption audited?
The encryption implementation uses the browser's native Web Crypto API — a well-audited, hardware-accelerated implementation maintained by browser vendors. The architecture has passed an internal security audit with all findings addressed.