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.
Updated June 2026
- 1Type your note
- 2Set a password
- 3Save or share the encrypted note
How to use Secure Notes
- 1
Type your note
Enter the sensitive text you want to protect.
- 2
Set a password
Choose a password to encrypt the note.
- 3
Save or share the encrypted note
Only someone with the password can decrypt and read it.
Frequently asked questions
Everything you need to know about secure notes.
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.
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.
The notes cannot be recovered. AES-256 encryption is effectively unbreakable without the correct password. Use a memorable passphrase or store the password securely.
Yes. Copy the encrypted ciphertext and share it via any channel (email, chat, etc.). Only someone with the correct password can decrypt it.
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.
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