Export your 2FA accounts for backup or import accounts from another device.
Two-factor authentication provides enhanced security for your online accounts by requiring both your password and a temporary verification code. This tool generates those time-sensitive codes using the same method as mobile authenticator apps, but works directly in your web browser.
The codes are created using a standardized algorithm that combines:
This tool generates a 6-digit code that changes every 30 seconds, making it extremely difficult for anyone to guess or reuse your verification codes.
This web-based tool serves as a convenient backup option when you don't have access to your primary authenticator app, such as when your phone is lost, damaged, or not available.
Yes, the codes are generated using the same algorithm and are equally secure. The main difference is this tool doesn't permanently store your secret keys between sessions unless you enable the storage option.
First verify your device's clock is synchronized correctly. If codes still don't match, double-check that you've entered the exact secret key provided when you set up two-factor authentication.
Yes, this tool is completely safe to use. All processing happens locally in your browser - your secret keys never leave your device or get transmitted to any server. We don't store any of your information.
TOTP (Time-based One-Time Password) generates codes based on the current time, while HOTP (HMAC-based One-Time Password) uses a counter that increments with each use. Most services including Google, Microsoft, and Facebook use TOTP.
Yes, once the page is loaded, you can use this tool offline. The code generation happens entirely in your browser without needing an internet connection.
When you enable two-factor authentication on a service, they typically provide a QR code to scan with your authenticator app. Many services also show the secret key in text form, which you can copy and use with this tool.
Yes, you can generate codes for multiple accounts by entering each secret key separately. The tool will maintain separate countdown timers for each generated code.
The QR code scanner uses your device's camera to read standard 2FA QR codes. It extracts the secret key and account name automatically, making setup faster and more accurate than manual entry.
No, your data is only stored locally in your browser if you enable the "Save accounts between sessions" option. We recommend using the export feature to create backups of your 2FA accounts.