Free Tool
2FA Tester
Enter a TOTP secret key to generate two-factor authentication codes in real time.
Codes are generated entirely in your browser using the Web Crypto API. Your secret key never leaves your device.
What is two-factor authentication?
Two-factor authentication (2FA) adds a second layer of security beyond your password. TOTP (Time-based One-Time Password) generates a new 6-digit code every 30 seconds using a shared secret and the current time. Even if someone steals your password, they can't log in without the current code.
FoxVault has a built-in TOTP authenticator that encrypts your 2FA secrets with per-item keys — so they're as secure as your passwords.
Store your 2FA secrets alongside your passwords with end-to-end encryption.
Get started with FoxVault