UU Authenticator: TOTP, 2FA & Cloud Sync

2FA and TOTP authenticator with QR import, groups, backups, dark mode, and end-to-end encrypted cloud sync.

View and manage 2FA/TOTP codes without leaving your current tab. UU Authenticator is a lightweight, local-first authenticator. Key features • Scan a QR code from the current tab, paste QR content, or upload a QR image • Add secrets manually and configure service, account, algorithm, digits, period, and group • Organize accounts into groups, search quickly, and drag to reorder codes • Light, dark, and system themes, plus a compact view • Interface available in 12 common languages • Import or export plain JSON and password-protected encrypted JSON • Move authenticator accounts between devices with migration QR codes • Optional auto-lock when the popup closes or after an idle timeout • After sign-in, the client encrypts the vault with AES-GCM before cloud sync