Authenticator generates 2-Step Verification codes in your browser.

Authenticator promo image
What is Authenticator?

"Authenticator" is a Firefox extension designed for two-factor authentication (2FA). It creates 2FA codes in your browser, enhancing the security of your online accounts. Major features include adding accounts through QR code scanning, data encryption, multilingual support, and making backup to a file or cloud storage. It supports several 2FA mechanisms such as TOTP, HOTP, Steam Guard, and Blizzard Authenticator. Protect your digital life with Authenticator.

Stats date:
Version: 6.3.5 (Last updated: 2023-05-16)
Creation date: 2017-11-19
Weekly download count: 2,646
Firefox on Android: No
Manifest version: 2
  • storage
  • identity
Size: 5.11M
Risk impact: Very low risk impact
Risk likelihood: Low risk likelihood

Other platforms

CKAuthenticator (v2.1.4)
1.14 (552) 4,174,413
Authenticator: 2FA Client
Authenticator: 2FA Client (v6.3.3)
4.00 (63) 1,267,905

Authenticator generates two-factor authentication (2FA) codes in your browser. Use it to add an extra layer of security to your online accounts.

Always keep a backup of your secrets in a safe location. Encrypting your secrets is strongly recommended, especially if you are logged into a Firefox account.


  • Add accounts by scanning QR codes
  • Search your accounts by pressing "/"
  • Translated into more than ten languages
  • Encrypt your secrets with a password
  • Backup your secrets to a file, Google Drive, or Dropbox
  • Sync your secrets with your Firefox Account
  • Open source
Permissions: Supports:
  • TOTP
  • HOTP
  • Steam Guard
  • Blizzard Authenticator
User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • simple and straightforward
  • works well
  • functioning for multiple platforms like
  • does not allow to scan from a file or directly paste the otp URL
  • some users experienced mismatch in codes
  • concerns about security if the browser is hijacked
Most mentioned
  • ease of use
  • otp feature
  • security concerns
View all user reviews
Risk impact

Authenticator is safe to use. It does not request any sensitive permissions.

Risk likelihood

Authenticator has earned a fairly good reputation and likely can be trusted.

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