VKT LocalBox2FA

Generate TOTP 2FA verification codes — entirely locally, with zero data upload.

Chromium · MV3 · Offline

🆓 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
Search & rename saved accounts
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
Import records — restore accounts from a backup file
QR code display — scannable QR to transfer accounts to your phone authenticator

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 extension storage without encryption
💾 Removing the extension = data loss — Export a backup before removing the extension
📄 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
✅ Minimal permissions — storage only for license status
✅ Secrets in local extension storage, 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: support@annmax1983.com