What does TOTP / 2FA Generator actually do?

The TOTP generator computes the current time-based one-time code from a shared secret and a period (usually 30 seconds). The code changes when the time step changes. It does not enroll the secret with a server, and a matching code only proves both sides share the secret and the clock.

Are TOTP secrets uploaded?

No. Codes are derived locally in your browser.

Should I use this for production account 2FA?

Prefer a dedicated authenticator app for long-term account security. This tool is ideal for development and debugging.

TOTP / 2FA Generator

Generate live TOTP codes from a Base32 secret or otpauth:// URI. SHA-1/256/512, local-only. Free online — runs locally, no upload.

DevTooKit:demo

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Refreshes in 30s

Secret (Base32) or otpauth:// URI

Label

Digits

Period

Algorithm

otpauth URI

otpauth://totp/DevTooKit%3Ademo?secret=JBSWY3DPEHPK3PXP&issuer=DevTooKit&algorithm=SHA1&digits=6&period=30

Runs fully in your browser (RFC 6238). Secret never leaves this device. Sample secret JBSWY3DPEHPK3PXP is the common demo key ("Hello!").

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TOTP / 2FA Generator