Authenticator

Local TOTP & HOTP authenticator with QR import, encrypted storage, backups, optional Chrome Sync, and autofill.

Securely generate and manage two-factor authentication (2FA) codes locally in Chrome. and stores your one-time passwords directly in your browser. Easily add and manage TOTP and HOTP accounts, scan QR codes, and generate verification codes instantly. All secrets are stored locally and can be protected with a master password for added security. ### Key Features • Generate TOTP and HOTP codes • Support for SHA-1, SHA-256, and SHA-512 • Add accounts manually or by scanning QR codes • Import otpauth:// URIs and encrypted backup files • Export encrypted backups for recovery • Encrypt secrets locally with a master password • Optional Chrome Sync across your own signed-in devices • Quickly copy codes from the popup • Right-click autofill for 2FA input fields • Light and dark theme support ### Privacy & Security • No analytics, no ads, and no third-party tracking • All data is stored locally by default • Optional Chrome Sync only syncs data across your own signed-in browsers • Secrets are encrypted at rest using your master password • Data is never sold or used for advertising • No data is shared with third parties (except Chrome Sync when enabled) ### Why use Authenticator? If you want a fast, private, and secure way to manage your 2FA codes without relying on external services, Authenticator keeps everything under your control—right inside your browser.