🔐 TOTP / OTP Tool

Generate and verify Time-based One-Time Passwords (RFC 6238). Compatible with Google Authenticator, Authy, and any 2FA app. Runs 100% in your browser — your secret never leaves your device.

Secret key (Base32)

Digits

Period (seconds)

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Click to copy

Refreshes in 30s

Secret key (Base32)

OTP code to verify

Window (±steps)

Enter an account name and issuer to generate a QR code you can scan with any authenticator app.

Account / Email

Issuer / App name

Secret (from Generate tab)

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Privacy Notice

All cryptographic operations run entirely in your browser using the Web Crypto API. No secrets, codes, or inputs are transmitted to any server. This tool is for testing and development purposes.