OM Authenticator (TOTP)

Local one-time TOTP codes without sending data over the network

OM Authenticator generates time-based one-time passwords locally in Chrome. Features: • RFC 6238 TOTP with SHA-1, SHA-256 and SHA-512; • 6- and 8-digit codes and custom periods; • manual service entry; • standard otpauth:// QR image import; • import of the current known Google Authenticator migration format, including multi-QR batches; • encrypted local vault; • encrypted password-protected backup and recovery; • search, editing, deletion and manual ordering; • six interface languages and system, light and dark themes; • keyboard and screen-reader accessibility. The extension works offline. It does not use Chrome Sync, analytics, telemetry, remote code or external services. Incognito mode and active-tab capture are intentionally unsupported. The unlocked Chrome profile is treated as trusted. There is no separate local master password. Create an encrypted backup so your saved services can be restored if Chrome profile data is cleared, damaged or removed.