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Generate and validate time-based OTP (one time password) for multi-factor authentication.
Generate and validate time-based OTP (one time password) for multi-factor authentication. totp generator, totp qr code generator.
Secret in hexadecimal
9f46f04e3d53f4877017
Epoch
1770936655
Iteration — Count
59031221
Padded hex
000000000384beb5
Enter or generate a base32 secret. Use the refresh button for a new secret.
View current, previous, and next OTP. Countdown shows time until next code.
Scan the totp qr code generator output with Google Authenticator or similar apps.
free otp code generator: Generate TOTP codes without an authenticator app.
totp generator: Test or validate TOTP setup. otp-generator npm alternative in browser.
totp qr code generator: Create QR code for authenticator app setup.
verification code generator for gmail: Same algorithm as Google 2FA.
This free otp code generator implements the totp generator algorithm (RFC 6238). It produces time-based one-time passwords used by Google Authenticator, Authy, and other 2FA apps. The totp qr code generator creates a scannable QR code for easy setup. Use as a verification code generator for gmail-style 2FA or otp-generator npm alternative in the browser. otp generation algorithm: HMAC-SHA1(secret, time_counter).
Keep your secret safe. Anyone with the secret can generate the same OTP codes. Use the totp qr code generator to add to Google Authenticator.
This totp generator implements RFC 6238 (Time-based One-Time Password). Same otp generation algorithm as Google Authenticator. free otp code generator with totp qr code generator. Use for 2FA testing or as otp-generator npm alternative.
The totp qr code generator produces a Key URI (otpauth://totp/...) QR code. Scan with Google Authenticator, Authy, or similar. verification code generator for gmail uses the same format.