Enter a password and plaintext to get AES-256-GCM encrypted ciphertext. Decrypt with the same password anytime. All processing stays in your browser.
AES Encryptor is a browser-based tool on 24Toolkit. Enter a password and plaintext to get AES-256-GCM encrypted ciphertext. Decrypt with the same password anytime. All processing stays in your browser. AES (Advanced Encryption Standard) is a symmetric encryption algorithm widely adopted for securing sensitive data. Our tool uses AES-256-GCM, the most secure variant, which provides both encryption and authentication. With 256-bit key length, AES-256 offers extremely strong protection against brute-force attacks. The GCM (Galois/Counter Mode) adds integrity verification, ensuring your encrypted data hasn't been tampered with. All encryption and decryption runs locally via the Web Crypto API — your plaintext, keys, and ciphertext remain inside your browser tab and are never transmitted over the network. AES Encryptor is a browser-based workflow on 24Toolkit at /aes-encryptor for users who need fast, private results without installing software. Enter a password and plaintext to get AES-256-GCM encrypted ciphertext. Decrypt with the same password anytime. All processing stays in your browser. The page is designed for direct use in modern browsers
Key Features
AES-256-GCM military-grade encryption
100% client-side - data never leaves your browser
PBKDF2 key derivation with 100,000 iterations
Secure random IV generation for each encryption
Copy encrypted text with one click
How to Use
Enter your text in the input field - this can be any sensitive information you want to protect.
Create a strong secret key (password). Use a mix of letters, numbers, and symbols for best security.
Click 'Encrypt' to transform your text into an encrypted string that can only be decrypted with the same key.
To decrypt, paste the encrypted text, enter the same secret key, and click 'Decrypt' to reveal the original message.
FAQ
Is AES-256 encryption secure?
Yes, AES-256 is considered military-grade encryption and is used by governments and security professionals worldwide. With 2^256 possible key combinations, it's practically impossible to break through brute force.
What happens if I forget my secret key?
Without the exact secret key, the encrypted text cannot be recovered. There is no 'forgot password' option in encryption - this is by design for security. Always store your keys safely.
Is my data sent to any server during encryption?
No. The Web Crypto API performs all AES encryption and decryption inside your browser. Your plaintext, secret key, and encrypted output never leave the browser tab — not even temporarily. This makes it safe for encrypting API keys, passwords, and other secrets.