Authenticator
Add to Chrome

Two-factor authentication
made simple

Free, open-source Chrome extension that generates TOTP verification codes to protect your online accounts.

Everything you need for 2FA

Secure by Design

Your secrets never leave your device. All TOTP codes are generated locally with no external servers.

Time-Synced Codes

Built-in time synchronization check ensures your codes are always accurate and valid.

QR Code Scanner

Scan QR codes directly from your screen. No need for a phone camera — just click and add.

Offline Ready

Works completely offline. No internet connection required to generate your 2FA codes.

Export & Import

Easily backup and restore your accounts. Migrate from other authenticator apps in seconds.

Quick Search

Find your accounts instantly with built-in search. No scrolling through long lists.

Auto Backup

Automatic backups to protect against data loss. Your accounts are always safe.

20+ Languages

Available in English, Spanish, Chinese, Russian, Japanese, and many more languages.

Ready to secure your accounts?

Join thousands of users who trust Authenticator for their 2FA needs.

Add to Chrome — It's Free