2FA Live — Trang Ha Viet

Open-source browser extension for showing a TOTP 2FA code instantly from a shared secret.

Features

• Generates 6-digit TOTP codes locally in the popup.
• Updates automatically when the current code expires.
• Shows the countdown to the next code.
• Copies the current code with one click.
• Does not send secrets anywhere.

Secret Format

Paste the Base32 secret provided by your service, usually from an authenticator setup screen. Spaces are ignored.

You can also paste an otpauth://totp/... URL. 2FA Live extracts the secret value and uses the URL's period value when present.

Author

Trang Ha Viet

Source code

https://github.com/tranghaviet/2fa-live