6 Authenticator Apps and Extensions for Safer Chrome Sign-Ins

A Chrome sign-in asks for a six-digit code, and you reach for your phone again. For people who log in to dozens of services a day, that small step adds up fast. 

The alternative is to keep the code generator inside the browser. Others prefer the second factor on a separate device, away from the computer they are signing in on. Both are reasonable choices. 

This guide compares six authenticator options for Chrome users: two browser extensions, one native desktop and mobile app and three phone apps. Each one suits a different workflow, so the right pick depends on where you sign in and how you want to recover your accounts. 

Key Takeaways

• Browser extensions put codes beside the login form, while phone apps keep the second factor on a separate device.

• Check how each tool handles backup and recovery before you move your accounts, since some depend on a cloud account and others on a password only you hold.

• Turn on optional encryption or app locks wherever a tool offers them.

• Keep your services’ recovery codes outside any authenticator, and keep your old setup until codes from the new one are accepted.

How We Compared These Authenticators

We looked at where each tool runs, whether it needs an account, how codes reach the login form and how backup, sync and export work. We also checked whether the core app is free. 

One point applies to every tool here. Under NIST SP 800-63B, codes that a person reads and types are not phishing-resistant, because a fake page can capture a code and relay it before it expires.

Pair any authenticator with careful link checking, and use passkeys where a service offers them. 

1. 2FA Authenticator

Best for: People who sign in mostly on desktop Chrome and want codes right beside the login form. 

2FA Authenticator is a free, open-source (MIT) Chrome extension that generates TOTP codes on your device and works offline.

It needs no account or phone number, has more than 200,000 users and carries a Featured badge on the Chrome Web Store. 

A right-click menu inserts the current code into a login field, and you can share a code by link without sharing the secret key.

It imports Google Authenticator exports by QR code or otpauth-migration link, exports plain otpauth:// links and keeps automatic local backups. 

Keep in mind: The password lock is optional and off by default, so turn it on to encrypt your codes on the device. There is no phone version. 

2. Authenticator Extension

Best for: Users who switch between Chrome, Firefox and Edge or need counter-based codes. 

Authenticator Extension is a free, open-source browser extension available for Chrome, Firefox and Edge. It supports both time-based TOTP and counter-based HOTP codes, and it can add accounts by scanning a QR code on screen. 

Optional password encryption protects stored accounts. Backups can go to a local file, Google Drive, OneDrive or Dropbox, which gives you several recovery routes. 

Keep in mind: Set a password in the security settings before exporting, so your backup files are encrypted. 

3. Proton Authenticator

Best for: People who want one free authenticator across desktop and phone. 

Proton Authenticator runs as a native app on Windows, macOS, Linux, iOS and Android, and codes work offline on every platform. You can use it without a Proton Account. 

Signing in to a Proton Account adds end-to-end encrypted sync across devices. It also imports from Google Authenticator and several other authenticators, and it can export your accounts. 

Keep in mind: It runs beside Chrome as a separate app, so codes are copied rather than inserted from the browser. 

4. Google Authenticator

Best for: Users who want a simple phone app with optional cloud sync. 

Google Authenticator is a free app for iOS and Android that generates codes offline. You can sync codes to your Google Account or use the app without signing in. 

It supports time-based and counter-based codes, multiple accounts and QR transfer to a new phone. That makes it a familiar starting point for many people. 

Keep in mind: There is no desktop version, and without sync you need the old phone to move your codes. 

5. Microsoft Authenticator

Best for: People whose sign-ins include Microsoft personal, work or school accounts. 

Microsoft Authenticator is a free app for iOS and Android. Alongside standard codes for third-party services, it supports push approvals and passwordless sign-in for Microsoft accounts. 

It offers app lock controls and backs up eligible accounts to the cloud. That suits users who already live in Microsoft’s ecosystem. 

Keep in mind: Backups restore only to the same phone platform, and work or school accounts may need registering again after a restore. 

6. Twilio Authy

Best for: Users who want codes synced across a phone and a tablet. 

Twilio Authy is a free app for iOS and Android that generates codes offline and syncs them across your mobile devices. Encrypted cloud backups are protected by a backup password that only you hold. 

Device management controls let you see and remove devices linked to your account. It also supports eight-digit codes for services that use them. 

Keep in mind: Authy’s desktop apps have been discontinued, and a forgotten backup password cannot be recovered. 

How to Switch Authenticators Safely

Moving accounts between authenticators is where most lockouts happen. Take it one step at a time. 

First, save each service’s recovery codes somewhere outside your authenticator, such as a password manager or a printed copy. Then import or re-add your accounts in the new tool. 

Before deleting anything, sign in to each service using a code from the new tool. Keep the old app until every account works. 

Finally, turn on any encryption, app lock or backup option the new tool offers. A strong setup is only as good as your ability to recover it. 

No authenticator can stop you typing a valid code into a convincing fake page. Pair your new setup with everyday cybersecurity habits, such as checking the real destination before you sign in and never approving a prompt you did not start. 

Conclusion

The right authenticator depends on where you sign in. Browser extensions suit desktop-heavy work, a native app suits people moving between computer and phone and phone apps keep the second factor on a separate device. 

Whichever you choose, enable its protection settings, plan your recovery route and keep your services’ recovery codes safe. And remember that typed codes are not phishing-resistant, so check every login page before you enter one. 

FAQ

Is a browser authenticator extension safe to use? It can be, as long as you enable any optional encryption and keep your computer and browser secure. The trade-off is that the code generator sits on the same device you sign in on. 

Can I use more than one authenticator for the same account? Yes. Many services let you scan the same setup QR code into two authenticators, so both show matching codes. 

What happens if I lose my phone? It depends on your setup. Cloud sync, encrypted backups or exported files let you restore your accounts, and service recovery codes work as a last resort. 

Are authenticator codes better than SMS codes? App-generated codes avoid SIM-swap risks that affect SMS. Neither is phishing-resistant, so passkeys are the stronger option where a service supports them. 

Do I need an account to use an authenticator app? Not always. Several tools on this list work without any account, while others need one for sync or backup.