Security ToolsFree

Secure Notes

Write and encrypt private notes directly in the browser using AES-256-GCM encryption. Set a password to encrypt your note — only someone with the password can decrypt it. Copy the encrypted ciphertext to store anywhere. Zero server storage, no signup.

Frequently Asked Questions

What encryption algorithm is used?▼
AES-256-GCM (Advanced Encryption Standard with 256-bit key in Galois/Counter Mode) via the browser's Web Crypto API. This is military-grade encryption used by governments and financial institutions.
Are my notes stored on a server?▼
No. Notes are encrypted entirely in your browser. The encrypted ciphertext exists only in your browser window. Copy it to store wherever you like — no data is sent to any server.
What happens if I forget the password?▼
The notes cannot be recovered. AES-256 encryption is effectively unbreakable without the correct password. Use a memorable passphrase or store the password securely.
Can I share encrypted notes with someone else?▼
Yes. Copy the encrypted ciphertext and share it via any channel (email, chat, etc.). Only someone with the correct password can decrypt it.
How secure is AES-256?▼
AES-256 is currently considered unbreakable by brute force. At current computing speeds, exhaustively trying every possible key would take longer than the age of the universe.