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AES Encryption Tool — Real, Modern Encryption in Your Browser

Encrypt or decrypt text using AES (Advanced Encryption Standard) — the actual algorithm that protects HTTPS traffic, disk encryption and password managers worldwide, not a historical or educational cipher. Encryption runs locally through your browser's Web Crypto API, so your plaintext and password never leave the page.

How to use Aes Encryption

  1. Paste your text and enter a password.
  2. Choose encrypt or decrypt.
  3. Copy the resulting ciphertext or recovered plaintext.
  4. Keep your password secret — losing it means the ciphertext cannot be recovered.

Frequently asked questions

Is this real, secure encryption?
Yes. AES is the actual standard used to secure HTTPS, disk encryption and password managers — this is genuinely different from the historical ciphers (Caesar, Vigenère, ROT13) also on this site, which provide no real security.
Is my password sent anywhere?
No. Encryption and decryption run entirely in your browser via the Web Crypto API, so neither your plaintext nor your password leaves the page.
What happens if I lose the password?
The ciphertext cannot be recovered without it — AES has no backdoor, which is the entire point of using real encryption instead of a reversible-by-design cipher.

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