TOTP Authenticator
Time-based one-time passwords (RFC 6238), compatible with Google Authenticator and others, generated locally in your browser.
How to use TOTP Authenticator
- Enter a Base32 secret in the Secret field (e.g. JBSWY3DPEHPK3PXP)
- Set digits and period (default 6 / 30s)
- Click Generate to get the current code and remaining seconds
Features
- Everything runs in your browser - pasted content never leaves your device
- No sign-up or login; open the page and use it, equally handy on mobile
- All processing is UTF-8 byte based, so Chinese text stays clean
FAQ
- Is this tool free?
- Completely free, no sign-up or login, unlimited uses.
- Will my data be uploaded?
- No. All computation runs locally in your browser; your input never leaves your device.
- How do I use it?
- Fill in the box above, click the matching button to get the result, then click Copy to take it away.
- Is this tool safe?
- All computation runs locally in your browser and the secret is never uploaded; just do not share your secret with others.