🛡️ Zero-Knowledge Client-Side Cryptography
2FA Live Auth Code Generator
Fast, free, and secure alternative to mobile authenticator apps. Paste your secret setup key below to generate your 6-digit Time-Based One-Time Passwords (TOTP) in real-time. Processed 100% locally in your browser.
🔑 Enter 2FA Secret Key
Base32 formatted secret (e.g. JBSWY3DPEHPK3PXP) from Google, GitHub, Discord, Facebook, or your SaaS account
RFC 6238 COMPLIANT
Quick Test Presets:
📜 Saved Keys (Local Browser Cache)
0 Saved
| Account / Label | Secret Key Preview | Live 2FA Code | Next Refresh | Actions |
|---|---|---|---|---|
| No saved keys yet. Paste a key above and click "Save to Cache" for instant 1-click access! | ||||
Zero-Knowledge Architecture
Security is paramount. The 2FA auth code generation happens 100% locally via Javascript's Web Crypto API. We do not store, log, or track your secret keys. Your data never leaves your browser.
Lightning Fast Real-Time Sync
Pasting any setup key calculates your secure 6-digit token instantaneously. The code syncs with standard internet time and automatically updates every 30 seconds.
Universal RFC 6238 Compatibility
Fully compliant with Google Authenticator, Microsoft Authenticator, and Authy. Works with Discord, GitHub, Binance, Stripe, Facebook, and Instagram.
Frequently Asked Questions
Is this online 2FA tool safe to use?
Yes! This tool operates on a strict zero-knowledge, client-side architecture. All cryptographic hashing (HMAC-SHA1) is executed directly on your device using native browser Web Crypto. Your secret key is never sent over the network.
Can I use this 2FA generator offline?
Yes! Once this page is loaded in your browser, you can disconnect your internet completely. The TOTP algorithm runs locally based on your computer's clock.
Why would a code be rejected by a service?
Because TOTP codes are time-based, your computer or phone's system clock must be synchronized with internet time (NTP). If your clock is off by more than 30 seconds, ensure your device's date and time are set to "Set time automatically".