Encrypt / Decrypt Text
Securely encrypt or decrypt your text using advanced symmetrical ciphers. Works completely in your browser.
Encrypt
Decrypt
AES Text Encryption, Right in Your Browser
Type a message, set a passphrase, and encrypt it with AES — the same cipher trusted for sensitive data worldwide. Paste encrypted text and the same passphrase to decrypt it back instantly.
Encryption runs entirely in your browser with the CryptoJS library, so your plaintext never travels anywhere. Perfect for locking notes, secrets in transit, and private messages.
AES encryption
Messages are encrypted with AES using your passphrase — strong, standard cryptography handled locally in your browser.
Encrypt and decrypt
Switch between encrypt and decrypt modes to lock a message or unlock one, all without creating an account.
A note on passphrases
Encryption is only as strong as your passphrase: use a long, unique phrase and share it with the recipient through a separate channel — never alongside the encrypted text.
How to use
- Type or paste your text.
- Enter a strong passphrase.
- Encrypt to lock it, or paste ciphertext and decrypt with the same passphrase.
Frequently Asked Questions
What encryption does this use?
AES (Advanced Encryption Standard), implemented with the widely used CryptoJS library, running locally in your browser.
Is my text sent to a server?
No. Encryption and decryption happen entirely in your browser — your plaintext never leaves your device.
How do I share an encrypted message?
Send the encrypted text to your recipient and share the passphrase through a different channel, like a phone call or a separate message.
What makes a good passphrase?
Length beats complexity: several random words are far stronger than a short password with symbols.
Can I decrypt text encrypted elsewhere?
Only if it was encrypted with the same AES mode, key derivation, and passphrase — the tool reliably decrypts text it encrypted itself.
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