AES Encrypt Decrypt
Protect text with real AES-256 encryption, using a password only you know. Everything runs inside your browser — the password and text never leave your device, and the page even works offline. A lost password means the text cannot be recovered.
Use a strong, unique password. It is never stored or sent anywhere.
How to use
- Choose Encrypt or Decrypt.
- Type or paste your text and enter a password (minimum 4 characters).
- Click Encrypt or Decrypt. The encrypted output is a Base64 string that contains the random salt and IV used, so you only need to keep the output and the password.
- To decrypt later, switch to the Decrypt tab, paste the Base64 string, enter the same password, and click Decrypt.
Note
This tool uses AES-256 in GCM mode with a key derived from your password using PBKDF2 (SHA-256, 100,000 iterations) and a fresh random salt and IV every time. That means encrypting the same text twice gives different output. Decryption detects tampering and fails safely instead of returning garbage. Keep your password safe — a lost password means the text cannot be recovered.