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Authenticator Chrome extension

Authenticator generates time-based two-factor verification codes directly in your browser, letting you approve logins without a separate phone app. It's best for people who want 2FA codes available on their desktop while browsing. The catch: since codes live in the browser, losing access to your Chrome profile without a backup can lock you out of accounts.

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

Last checked September 30, 2026 against the Chrome Web Store listing · Independent, not affiliated with Google

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Pros

generates 2FA codes without needing a separate phone app
quick access from the browser toolbar
supports standard time-based one-time password accounts
free to install and use

Cons

codes are tied to your browser, so losing access without a backup is risky
no phone-independent access if your computer is unavailable
requires care when exporting or backing up account secrets

Best for

generating 2FA codes without switching to a phone app
desktop-first workflows where you're already in Chrome
adding an extra layer of account security quickly

Skip it if

users who want 2FA codes available even when their browser or computer is unavailable
people uncomfortable storing authentication secrets in a browser extension
accounts that require hardware security keys instead of code-based 2FA

Key features

generates time-based one-time passcodes for 2FA-enabled accounts
toolbar access to current codes without opening a separate app
supports adding multiple accounts
works alongside standard 2FA setup flows on other websites

What Authenticator does

Authenticator generates the rotating six-digit codes used for two-factor authentication, the same kind produced by apps like Google Authenticator, but directly inside your Chrome browser. When you enable 2FA on a website, you add the account's secret key to the extension, and it then displays a fresh code every 30 seconds for you to enter at login.

Is Authenticator safe?

The extension stores the secret keys used to generate your 2FA codes, so it needs to keep that data locally in the browser. This makes it convenient, but it also means losing your browser profile without a backup of your accounts can lock you out of 2FA-protected logins. Export or note down backup codes for each account when you set them up.

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Guides featuring Authenticator

Authenticator: FAQs

Does Authenticator cost anything to run?

No. The Chrome Web Store lists it as free, and generating codes does not need a paid plan. Recheck the listing if you are ever asked for payment.

Where does Authenticator keep my 2FA secret keys?

It stores them locally in your browser so it can generate codes, which is why backups of those keys matter. Treat your Chrome profile like a password vault and keep it locked.

How do I add my first account to Authenticator?

Turn on 2FA at the site you want to protect, copy or scan the setup secret into the extension, then type the six-digit code it shows to confirm. Save the setup key somewhere safe before you finish.

What happens if I lose my browser data?

Without a backup of your account secrets, you could lose access to 2FA codes for accounts added to the extension.

Will my Authenticator accounts follow me to a new computer?

Do not assume so. Whether data moves depends on your Chrome sync settings and the extension's own export options, so export or record each setup key before switching machines.

Authenticator extension or phone app: which should I choose?

A phone app is available when your computer is not, while the extension is quicker when you are already in Chrome. If you use the extension, keep a backup so a lost browser profile does not lock you out.

My Authenticator code is rejected at login. What should I check?

Codes change every 30 seconds, so type the newest one, and make sure your computer clock is accurate. A wrong time is the most common reason a valid-looking code fails.

Can I add multiple accounts to Authenticator?

Yes, the extension supports adding secret keys for more than one account and displays codes for each.

Does Authenticator replace a phone authenticator app?

It can serve the same purpose for desktop use, but it doesn't give you codes when you're away from that browser.

What exactly should I save so I can rebuild my Authenticator setup?

Keep each account's original setup key or exported entry in a secure place such as a password manager. With those, you can re-add every account after a reinstall or profile reset.