Text Encryptor
Encrypt or decrypt text with a passphrase, using AES-256-GCM.
Encryption happens entirely in your browser. If you lose the passphrase, the text can't be recovered — there's no backup key.
How to use this tool
- 1
Paste the text you want to encrypt, or the ciphertext you want to decrypt.
- 2
Enter a passphrase.
- 3
Click "Encrypt" or "Decrypt" and copy the result.
Frequently asked questions
What encryption does this use?+
AES-256-GCM, a widely used authenticated encryption standard.
Is my passphrase or text sent to a server?+
No, encryption and decryption happen entirely in your browser.
What happens if I use the wrong passphrase to decrypt?+
You'll get a clear error instead of incorrect output, since AES-GCM detects tampering or wrong keys.