2FA2FA

2FA2FA is a free, browser-based Two-Factor Authentication (2FA) code generator and TOTP manager designed for secure, instant access. Users simply paste their secret key from any website to generate real-time 6-digit codes that update every 30 seconds, just like popular authenticator apps. All codes are created locally in your browser with 100% client-side encryption—your secret key is never sent to a server, and no data is stored or logged.

This makes 2FA2FA ideal for quick, temporary use when your phone authenticator app isn’t available, or when you need emergency access to your accounts. There’s no need to install any app or create an account; just open the webpage and start generating codes. All data disappears when you close the page, ensuring strong privacy protection.