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TOTP Generator & Validator

Generate and validate time-based one-time passcodes (TOTP)

Generate live time-based one-time passcodes (the 6-digit codes from authenticator apps) from a base32 secret, watch them refresh every 30 seconds, and validate a code against the secret. Handy for testing 2FA flows. All computation runs locally in your browser.

expires in 30s

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