VKT LocalBox2FA
Generate TOTP 2FA verification codes — entirely locally, with zero data upload.
🆓 Free Features
- TOTP code generation (RFC 6238 compatible)
- Works with Google Authenticator, Authy, all standard TOTP services
- 30s countdown with color transitions (blue→orange→red)
- One-click copy to clipboard
- Save & manage secret keys with custom names
- Live history — all accounts show real-time codes
- Delete single record with confirmation dialog
- Duplicate guard — prevents saving same key twice
- Dark mode — follows system preference
- 6 languages supported
⭐ Advanced Features (License)
- Export records — export all secrets as text file for backup
- Clear all records — bulk delete all saved records at once
Installation
- Visit the Chrome Web Store page for LocalBox2FA
- Click Add to Chrome and confirm
- Click the 🔐 icon in your toolbar to start using
Security Notes
- 🔑 Plaintext storage — Secret keys stored in localStorage without encryption
- 💾 Clearing data = data loss — Export backup before clearing browser data
- 📄 Export is unencrypted — Store backup file securely
- 🛡️ Best practice — Transfer to dedicated authenticator app for production use
Privacy
- ✅ Zero data upload — all TOTP computation happens locally
- ✅ No analytics, no cookies, no network requests
- ✅ Zero permissions declared in manifest
- ✅ Secrets in localStorage, never leave your device
Install for Chrome
Install for Edge
View on GitHub
GitHub repository only contains readme documentation for reference. No offline installation packages, source code for end users are not provided. Official installation channel is Chrome Web Store only.
For questions: [email protected]