Secure Authenticator

Professional 2FA authenticator for TOTP and HOTP codes. Encrypted vault, QR import, and private OTP generation.

Secure Authenticator is a browser extension for generating Time-based One-Time Passwords (TOTP) and HMAC-based One-Time Passwords (HOTP) used for two-factor authentication (2FA). Your authentication accounts are stored locally in an encrypted vault, giving you full control of your data without requiring an online account or cloud synchronization. Features • Generate TOTP and HOTP verification codes • Encrypted local vault protected with AES-256-GCM • Optional Master Password protection • QR code import • Import and export using standard OTP formats, encrypted backups, CSV files, URI lists, and QR bundles • Organize accounts with groups, favorites, archive, search, labels, and notes • Live countdown timers and one-click code copying • Automatic vault locking and optional clipboard auto-clear • Configurable algorithms, code length, and OTP periods • Light, Dark, and System themes • Multiple language support Privacy Secure Authenticator is designed to keep your authentication data on your device. • No analytics • No advertising • No telemetry • No cloud synchronization • No account required Permissions storage Stores your encrypted vault and application settings locally. clipboardRead Used only when you choose to import authentication data from the clipboard. clipboardWrite Used only when copying authentication codes and optionally clearing the clipboard automatically. activeTab Used only when you choose to scan a QR code from the current webpage. alarms Used for OTP countdowns, automatic vault locking, clipboard auto-clear, and optional reminders. notifications Used only for optional local security and OTP expiry notifications. Secure Authenticator provides a simple and reliable way to manage two-factor authentication codes while keeping your authentication data under your control.