2FAA Authenticator

by https://2faa.app · 2faa.app · Tools

Manifest V3 Free

View in Chrome Web Store Data as of 21 Oct 2026

TOTP 2FA codes with one-click copy and auto-fill. Free, open-source.

Users

+7 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#173K

#144K among extensions

Version

1.0.0

updated 22 Apr 2026

Users

monthly, 6 months

Latest, 21 Oct 2026: 15 usersMove the mouse over the chart for any month

Ratings count

monthly, 6 months

Latest, 21 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About 2FAA Authenticator

TOTP (Time-based One-Time Password) is the standard algorithm (RFC 6238) behind most two-factor authentication apps including Google Authenticator, Authy, Microsoft Authenticator, and 1Password. It combines a shared secret key with the current time to generate a short-lived 6-digit verification code that changes every 30 seconds. Your secret key never leaves your browser. All TOTP code generation happens 100% client-side using JavaScript. No data is sent to any server. You can verify this by checking the network tab in your browser developer tools. The source code is open on GitHub