2FAA.app

2FAA Chrome Extension

Free Chrome / Edge / Brave extension that auto-detects 2FA input fields on login pages and fills them with the current TOTP code. Manifest V3, fully local — your secrets never touch a network.

Install: The extension is open source. Until the Chrome Web Store listing is live, you can install it manually:

  1. Clone or download the source from the 2FAA repository and run npm install && npm run build in the extension/ folder.
  2. Open chrome://extensionsin Chrome, enable "Developer mode" (top-right toggle).
  3. Click "Load unpacked" and select the extension/dist folder.
  4. Pin the 2FAA icon to your toolbar for quick access.

What it does

One-click 2FA codes

Click the toolbar icon to see all your TOTP codes. Click any code to copy it to the clipboard.

Auto-detect 2FA fields

The extension recognizes 2FA input fields on login pages (Discord, GitHub, AWS, etc.) and offers to fill the code.

Local-only storage

Secrets live in chrome.storage.local on your device. No sync, no server, no analytics — verify with DevTools.

Same engine as 2faa.app

Standards-compliant TOTP (RFC 6238). Compatible with Google Authenticator, Authy, and every TOTP-based service.

Permissions explained

  • storage — saves your TOTP secrets locally so codes persist across browser restarts.
  • activeTab — only accesses the current tab when you click the extension icon, to enable auto-fill.
  • clipboardWrite — copies the 6-digit code when you click the copy button.

Full disclosure in the privacy policy.

Web app, extension, or both?

The web app and extension share the same TOTP engine. Use whichever fits your workflow — or both. You can also import your Google Authenticator accounts and have them available everywhere.

Try the web appSee setup guides

FAQ

Is the 2FAA Chrome extension free?

Yes. The extension is free and open source. No paid tier, no account required.

Does the extension send my 2FA secrets anywhere?

No. Secrets are stored via chrome.storage.local on your device only. There are no network calls, no analytics, and no third-party SDKs. See the privacy policy for details.

Does the extension work on Edge or Brave?

Yes. Any Chromium-based browser that supports Manifest V3 extensions (Chrome, Edge, Brave, Arc, Opera) can install the 2FAA extension.

How is the extension different from the web app?

The web app at 2faa.app/totp opens in a tab — good for desktop work. The extension lives in your browser toolbar with one-click access and can auto-fill 2FA codes directly into login forms. Both share the same TOTP engine.