Secure Note Encryptor — AES-256 Encryption with Web Crypto API
Encrypt private notes with military-grade security. 100% browser-based.
💡 Use a strong, unique password. You cannot recover data without it.
🔐 Security Information
- Uses AES-256-GCM encryption (military-grade security)
- Web Crypto API provides native browser encryption
- All processing happens locally in your browser
- No data is sent to any server or stored anywhere
- Password is never stored - you must remember it
- Save encrypted text yourself (we don't store it)
About Secure Note Encryptor
Encrypt and decrypt private notes using AES-256 encryption via the Web Crypto API. Perfect for storing sensitive information like passwords, private keys, personal notes, or confidential data before saving to cloud storage.
All encryption/decryption happens 100% in your browser using native cryptographic functions. No data is ever sent to our servers. You control your encrypted content and password - keep both safe.
How to Use Secure Note Encryptor
- Enter text in the input field.
- Set a strong encryption password.
- Click 'Encrypt' to encrypt the note.
- Copy and save the encrypted text.
- To decrypt: paste encrypted text, enter password, click 'Decrypt'.
Key Features
AES-256-GCM encryption
Web Crypto API (native browser)
Password-based key derivation (PBKDF2)
96-bit random initialization vector
128-bit authentication tag
Base64 encoded output
Encrypt/Decrypt mode toggle
Copy to clipboard
100% client-side processing
No data transmitted or stored
Frequently Asked Questions
How secure is AES-256 encryption?
AES-256 is military-grade encryption used by governments and banks worldwide. It would take billions of years to crack with current technology. Your notes are extremely secure with a strong password.
Where is my encrypted note stored?
Nowhere! Encryption happens in your browser. You must save the encrypted text yourself (copy/paste to a file). We don't store anything on servers.
Can I recover my note if I forget the password?
No. Without the password, encrypted data is unrecoverable. This is by design - even we cannot decrypt your notes. Always remember or securely store your password.
What is the Web Crypto API?
It's a browser standard for performing cryptographic operations in JavaScript. It provides secure, native encryption functions built into modern browsers.
Can encrypted notes be decrypted on other devices?
Yes! Save your encrypted text and use the same password on any device with this tool. The encryption is standard AES-256, so it works across all platforms.