Freedom251 › Authenticator apps
Authenticator Extension
What Authenticator Extension is
Authenticator Extension is a free browser extension for generating one-time passwords with TOTP and HOTP standards. It runs on Chrome, Firefox, and Microsoft Edge; a Safari edition exists in the App Store but is not officially supported by the project. Accounts can be added by scanning QR codes or entering details manually. Supported entries include TOTP, HOTP, Battle.net, and Steam, with smart filtering and search for locating them. Users can protect data with a password, synchronize through the browser, and back up to Google Drive, OneDrive, or Dropbox. Backups can also be exported to a local file and imported from files, QR images, or text, including Google Authenticator exports. The maker says authentication information is not sent to its server or third parties without permission. Enabled browser sync sends it to Google account servers, while cloud backups send it to the selected storage provider. The project is MIT licensed and directs support requests to GitHub.
Who it suits
It suits people who want OTP codes inside supported desktop browsers, with encrypted backups and import options. Safari users should note that edition is not officially supported.
What it does well
- Supports TOTP and HOTP standards
- QR-code and manual account setup
- Password encryption and browser sync
- Backups to three cloud providers
- MIT-licensed open-source project
What to know first
- Safari edition lacks official support
- Reinstalling Chrome or Edge clears data
- Cloud backups transmit secrets to providers
- Unencrypted Steam or Blizzard backups use another format
Verdict
Authenticator Extension combines browser-based OTP generation with search, password protection, sync, and multiple backup paths. Protect backups carefully, because reinstalling supported extensions clears stored data and cloud options transmit account information.
Facts from Authenticator Extension's own pages
- Account features
- The extension supports password encryption, browser sync, smart filtering and search, and Battle.net and Steam accounts. · authenticator.cc, 12 Oct 2026
- Account types
- Supported account types include TOTP, HOTP, Battle.net, and Steam. · authenticator.cc, 11 Oct 2026
- Add accounts
- Accounts can be added by scanning a QR code or entering the account details manually. · authenticator.cc, 12 Oct 2026
- Backup formats
- It can import backup files, QR image backups, and text backups, including Google Authenticator account exports via QR images. · authenticator.cc, 12 Oct 2026
- Backup integrations
- It can back up files to Google Drive, OneDrive, and Dropbox, and can export backups to a local file. · authenticator.cc, 12 Oct 2026
- Backup limitation
- Unencrypted backups for Steam or Blizzard accounts do not use the standardized backup format. · authenticator.cc, 12 Oct 2026
- Backups
- Users can back up data to Google Drive, OneDrive, or Dropbox, or export it to a file. · authenticator.cc, 11 Oct 2026
- Browser availability
- The maker links downloads for Chrome, Firefox, and Microsoft Edge. · authenticator.cc, 11 Oct 2026
- Code type
- totp and hotp · authenticator.cc, 21 Sept 2026
- Data loss limit
- The Chrome and Edge troubleshooting pages warn that reinstalling the extension clears its data. · authenticator.cc, 11 Oct 2026
- Data transmission
- When enabled, browser sync sends authentication information to Google account servers, while cloud backup sends it to Google Drive, Dropbox, or OneDrive. · authenticator.cc, 12 Oct 2026
- Encrypted backup
- Yes · authenticator.cc, 21 Sept 2026
- Encryption
- Password-protected backups are available after setting a password in the Security menu, and the documentation recommends using them. · authenticator.cc, 12 Oct 2026
- Free plan
- Yes · authenticator.cc, 21 Sept 2026
- Google Drive privacy
- The maker says account data is stored using browser storage and that it does not see or directly control that data; Google Drive backups upload account secrets to Drive. · authenticator.cc, 11 Oct 2026
- Import
- Backups can be imported from files, QR images, or text, including exported Google Authenticator accounts. · authenticator.cc, 11 Oct 2026
- Multi-device sync
- Yes · authenticator.cc, 21 Sept 2026
- Open source
- The project’s public GitHub repository identifies the software as MIT licensed. · github.com, 11 Oct 2026
- OTP standards
- It supports TOTP (RFC 6238) and HOTP (RFC 4226). · authenticator.cc, 12 Oct 2026
- Privacy
- The privacy policy says authentication information is not sent to the maker’s server or third parties without permission and identifies no backend server for telemetry or other data. · authenticator.cc, 12 Oct 2026
- Purpose
- Authenticator is an in-browser one-time password client that generates two-step verification codes. · authenticator.cc, 12 Oct 2026
- QR setup
- Users can add accounts by scanning QR codes or entering account details manually. · authenticator.cc, 11 Oct 2026
- Safari support
- A Safari edition is available on the App Store, but the project says it does not provide official support for that edition. · github.com, 11 Oct 2026
- Search
- The extension provides smart filtering and search for accounts. · authenticator.cc, 11 Oct 2026
Where Authenticator Extension stands on Freedom251
- Authenticator apps#93 of 111