IconVault's TOTP Generator creates time-based one-time password secrets for two-factor authentication, shows the current 6-digit code with a live countdown, and builds a scan-ready QR code (otpauth URI) with your issuer and account label so you can enroll it in Google Authenticator, Authy or any TOTP app.

You can also switch to validate mode to check a code, and choose SHA-1, SHA-256 or SHA-512, with everything computed entirely in your browser so your secrets are never uploaded or stored anywhere. It is free with no signup. The honest note: this is a convenience tool for generating and testing codes, and you should store real 2FA secrets in your authenticator app or password manager, not in a browser tab.