AES Encryption and Decryption Tool
Encrypt and decrypt text or files using AES-256 encryption. Password-based encryption entirely in your browser.
How to use this tool
- Choose Encrypt or Decrypt mode
- Enter text to encrypt or paste encrypted text to decrypt
- Enter a strong passphrase (required for encryption/decryption)
- Click Encrypt or Decrypt button
- Copy encrypted result or decrypted plaintext
- IMPORTANT: Remember your passphrase, lost passphrases cannot be recovered
About AES Encrypt / Decrypt
AES (Advanced Encryption Standard) is a robust symmetric encryption algorithm used worldwide for securing sensitive data. This tool uses AES-256-GCM with password-based key derivation (PBKDF2), providing strong security for text and file encryption.
All cryptographic operations use browser's native Web Crypto API. Your data and passphrases never leave your device, critical for encrypting sensitive notes, credentials, private messages, or confidential documents.
Encryption security depends on passphrase strength. Use long, complex, unique passphrases. Short or common passphrases can be brute-forced. Store passphrases securely, without them, encrypted data is unrecoverable.