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Authenticator App Chrome extension

Authenticator App generates time-based two-factor authentication codes and keeps your accounts stored in the browser, so you don't need a separate phone app to log in. It's best for people who want quick 2FA access on desktop. The catch: keeping your only 2FA codes in a browser extension means losing the browser profile can lock you out without a backup.

  • PriceFree
  • CategorySecurity & Privacy
  • Works inChrome, Edge, Brave (desktop)
  • ✓No account needed

Last checked against the Chrome Web Store listing · Independent, not affiliated with Google

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Pros

  • generates 2FA codes directly in the browser toolbar
  • no phone required to log in with two-factor authentication
  • supports storing multiple accounts
  • simple, focused interface

Cons

  • codes are tied to the browser profile, so losing it without a backup can lock you out
  • keeping 2FA codes in the same browser as your logins reduces the separation that makes 2FA effective
  • no built-in phone app companion

Best for

  • generating 2FA codes without a phone app
  • quick access to authentication codes while browsing on desktop
  • users who want a simple, no-frills authenticator
  • managing multiple 2FA accounts in one place

Skip it if

  • users who want their 2FA codes separate from their browser for extra security
  • people who need cross-device sync without manual backup

Key features

  • time-based one-time password (TOTP) code generation
  • stores multiple authenticator accounts
  • toolbar access to codes for quick copy-paste
  • works entirely inside the browser, no phone needed

What Authenticator App does

Authenticator App generates time-based one-time passcodes (TOTP) for two-factor authentication, the same type of codes produced by apps like Google Authenticator, but inside your browser instead of on your phone. You add an account by scanning a QR code or entering a setup key, and the extension then produces a fresh code every 30 seconds for that account.

Is Authenticator App safe?

Because it stores your 2FA secrets, the extension needs local storage access to keep your accounts saved between sessions. Keeping your authenticator in the same browser as your passwords reduces the separation that makes two-factor authentication effective against some attacks, so treat your browser profile itself as something to secure and back up.

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Authenticator App: FAQs

Is Authenticator App free?

Yes, it's free to install from the Chrome Web Store.

Is Authenticator App safe to use?

It stores your 2FA codes locally in the browser. Since this puts your authenticator in the same place as your browsing, back up your accounts and secure your browser profile.

How do I use Authenticator App?

Install it, add an account by scanning a QR code or entering a setup key, then copy the generated code when logging in.

What happens if I lose the Authenticator App extension?

If you don't have a backup of your accounts, you may lose access to any site that requires that 2FA code, so export or record your setup keys separately.

What are alternatives to Authenticator App?

Google Authenticator, Microsoft Authenticator, and Authy are common phone-based alternatives, along with password managers that include 2FA storage.

Can Authenticator App store multiple accounts?

Yes, you can add and manage codes for several different accounts within the same extension.

Does Authenticator App sync across devices?

Sync depends on the extension's own settings; check its options for any backup or sync feature before relying on multiple devices.

Why isn't my code working with Authenticator App?

Codes expire every 30 seconds, so make sure your system clock is accurate and you're entering the current code before it refreshes.

Is it safe to keep 2FA codes and passwords in the same browser?

It's more convenient but reduces the separation 2FA is meant to provide; some users prefer a separate device or app for that reason.

Can I add an account manually without a QR code?

Yes, most authenticator extensions let you enter the setup key by hand if scanning a QR code isn't possible.