Authenticator Extension review
A free, open-source browser extension with encrypted backups and cross-browser sync.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Authenticator Extension is a free, open-source browser extension for individuals who want to manage two-factor authentication accounts in a browser. It generates TOTP and HOTP one-time passwords, adds accounts by scanning QR codes, and supports Chrome, Firefox, and Microsoft Edge. Search and filtering help organize authenticator accounts, while support for Steam Guard and Blizzard Authenticator covers specific account types alongside standard TOTP and HOTP entries.
The product’s strongest practical feature set centers on account protection and portability. Users can encrypt secrets with a password, synchronize them between browsers, and back up accounts to Google Drive, Microsoft OneDrive, or Dropbox. It also supports importing and exporting backup files, QR images, and text backups. That combination gives browser-first users several ways to preserve or move their authenticator data without limiting them to one backup format.
Platform fit is the main consideration. Authenticator Extension is distributed as browser extensions and integrates with Google Drive, Microsoft OneDrive, Dropbox, Google Account, and Firefox Account. Chrome, Firefox, and Microsoft Edge are supported, while Safari does not have official support. Choose it if browser access, open-source software, TOTP/HOTP coverage, and encrypted backups matter most. Users seeking a non-browser authenticator experience or official Safari support should consider a different type of authenticator app.
Authenticator Extension pros and cons
- Where it wins
- Supports both TOTP and HOTP one-time passwords
- Encrypts and synchronizes secrets between browsers
- Backs up accounts to Google Drive, OneDrive, and Dropbox
- Where it doesn't
- Browser extension access is central to the product
- Safari is mentioned but not officially supported
- Backup and export workflows require account management across browsers
Authenticator Extension fact sheet, pricing and score →
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