C
Authenticator
Your codes
Time-based one-time passwords, generated locally in your browser. Add an account to begin. This should only be used for testing purposes.
Add an account
Paste a base32 secret or a full otpauth:// link — whichever you have. No secret yet? Generate one.
Important — this tool has been created with the aid of AI! It has only gone through some cursory security checks. Don't use this to access production systems!
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Codes via the Web Crypto API · HMAC-SHA1 truncation · proof of concept