AES Decrypt Online

Decrypting AES data online used to terrify me. Pasting sensitive ciphertexts and secret keys into a random website is a massive security risk because you never know if they are logging your keys on their backend. This AES Decryptor specifically lets you unlock encrypted data securely, right inside your browser.

Why Trust This Tool?

The short answer: because it doesn't talk to a server. This tool uses the CryptoJS library directly into the frontend. When you paste your encrypted text and secret key, your browser's local memory handles the math. Your private keys never leave your device, making this safe for decrypting configuration files, passwords, or private notes.

How to Decrypt Your Data

1. Paste your AES-encrypted text into the top box.
2. Provide the exact secret passphrase that was originally used to encrypt it.
3. Hit Decrypt. If the key is correct, your original plain text will instantly appear.

Troubleshooting Decryption Failures

If you're getting an error or garbage text output, it almost always means one of two things: either your passphrase has a typo (AES is completely unforgiving about even a single incorrect character), or the ciphertext got corrupted when you copied it. Double-check that no spaces were accidentally added to the end of your password.