TOTP Authenticator
Generate 2FA / TOTP codes from a secret. Live 30-second countdown and otpauth:// QR code — keys stay on your device.
- Runs in your browser
- No upload on server
- Free, forever
- Paste input
- Run
- Copy result
Current code
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Refreshes in 30s
How this works — and why it's private
- Codes are computed in your browser from your secret using the standard RFC 6238 TOTP algorithm.
- Your secret never leaves the page — close the tab and it's gone.
- Use the QR code to add the same secret to any authenticator app.
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