2FA Authenticator

RFC 6238

Real-time client-side TOTP code generator for Facebook BM, Page Admins, and multi-account security.

100% Client-Side• No Storage / No API

Base32 Secret Key (Seed)

Quick Test:

Active 6-Digit Code

30sremaining

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0s30-Second Refresh Cycle30s

RFC 6238 Standard Compliance

Generates compliant 6-digit Time-Based One-Time Passwords using the SHA-1 HMAC algorithm and 30-second time steps. Fully compatible with Google Authenticator, Facebook 2FA, 2fa.cn, and standard TOTP hardware.

Zero-Knowledge Security

All cryptographic operations occur entirely within your browser's Web Crypto API subsystem. Secret keys are never transmitted over the network, never logged, and never stored in any database or browser storage.