Question 1

Is this 2FA code generator safe to use?

Accepted Answer

Yes. Codes are generated locally in your browser with the Web Crypto API - your secret keys never leave your device and nothing is sent to any server.

Question 2

Where are my secret keys stored?

Accepted Answer

Secret keys are saved only in your browser's IndexedDB storage on this device. No account data is transmitted, logged, or stored on any server.

Question 3

What is a TOTP code?

Accepted Answer

TOTP (Time-based One-Time Password) codes change every 30 seconds and are generated from your secret key using the RFC 6238 standard - the same standard used by Google Authenticator and Authy.

Question 4

Can I sync my tokens across devices?

Accepted Answer

Tokens are stored locally per device. Use the Export JSON button to back up your tokens and Import JSON to restore them on another device.

Question 5

What if I lose my secret key?

Accepted Answer

Keep a backup. Export your tokens to a JSON file or store the original secret key from the service that issued it, otherwise you will permanently lose access.

/ 2FA Code Generator

Frequently Asked Questions