Proton Authenticator

Protect your accounts with Proton Authenticator, a private and secure cross-device two-factor authentication (2FA) that works offline. Created by Proton, the creators of Proton Mail, Proton VPN, Proton Drive, and Proton Pass.

Proton Authenticator is open-source, end-to-end encrypted, and backed by Swiss privacy laws. It’s the safest way to generate and store your one-time passwords (TOTP) for 2FA Login.

Why Proton Authenticator?

• Free to use: No Proton account required, ad-free.
• Offline support, on mobile and desktop apps
• Sync your 2FA codes to all your devices with end-to-end encryption.
• Enable automatic backups for peace of mind
• Easily import from other 2FA apps, or export from Proton Authenticator.
• Protect your account with biometrics or a PIN code.
• Open-source transparency, verifiable code.
• Protected by Switzerland’s privacy laws.

Trusted by millions. Built by Proton.

Take control of your digital security today.