AES-256-GCM via your browser's own SubtleCrypto - your passphrase and text never leave this page. Unlike Base64, this actually protects the content. Lose the passphrase and the text is gone for good; there's no recovery.
Type text and a passphrase under Encrypt and click Encrypt - you'll get one portable string to save or share. Paste that string and the same passphrase under Decrypt to get the text back.
Yes - AES-256-GCM is real, modern authenticated encryption, run via the browser's native SubtleCrypto. Base64 or ROT13-style tools just re-encode text; this actually protects it.
The text is unrecoverable. There's no backdoor or reset - that's the point of real encryption.
No, everything runs client-side. A random salt derives the key via PBKDF2, and a random IV feeds AES-GCM, all in your browser.
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