Is it safe to generate 2FA codes in DodoDeck?

Yes! DodoDeck uses client-side Web Crypto API to calculate 6-digit TOTP codes directly inside your web browser. Your secret keys are never transmitted to any external server.

Can I import QR codes from Google Authenticator?

Yes, you can scan QR codes via your camera, upload a screenshot of your 2FA QR code, or paste your Base32 secret key directly.

2FA Code Generator

In-browser Google Authenticator & 2-Factor Authentication code generator. Computes standard RFC 6238 TOTP codes 100% locally on your machine.

2FA Secret Key or OTP URL (Base32)

Upload or drop a 2FA QR code image to auto-detect key

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Standard 30-second token

My Saved 2FA Accounts (Local Deck)

Stored only in your browser storage

Free Online TOTP / 2FA Code Generator — How It Works

A Time-Based One-Time Password (TOTP) generator creates 6-digit verification codes that refresh every 30 seconds. Unlike SMS text codes—which can be intercepted via SIM swapping—TOTP follows the universal RFC 6238 cryptographic standard and runs completely offline.

DodoDeck's 2FA Code Generator runs 100% locally inside your browser using the Web Crypto API. Your Base32 secret keys and QR setup codes never leave your device, making it a fast, private desktop alternative to mobile authenticator apps.

How to Generate a 2FA Code Online in 3 Steps

Get Your Setup Key: When enabling 2FA on Google, GitHub, Discord, AWS, or your bank, click "Can't scan QR code?" and copy the Base32 secret key (or save the QR image).
Paste or Upload QR: Paste your secret key into the box above or drop the QR code image into the scanner.
Copy Your 6-Digit Token: Your live 6-digit code and 30-second countdown ring appear immediately. Click to copy, or save the account to your local browser deck for quick access later.

TOTP vs. SMS Two-Factor Authentication

Security agencies including NIST and CISA recommend replacing SMS verification with TOTP authenticators or FIDO2 passkeys. SMS messages travel over legacy telecom networks vulnerable to SIM-swap attacks and phishing. Local TOTP tokens rely strictly on mathematical synchronization between your secret key and Unix epoch time, meaning no cellular carrier or cloud server can leak your codes.

Frequently Asked Questions

What is a TOTP generator?

TOTP (Time-based One-Time Password) generates a temporary 6-digit security code every 30 seconds from a shared secret key and the current time, used for two-factor authentication (2FA).

Is an online TOTP generator safe?

Yes, when it runs client-side. DodoDeck's TOTP generator executes all HMAC-SHA1 calculations inside your own browser memory. Nothing is sent to our servers.

Does it work with Google, GitHub, Microsoft, and Discord?

Yes. Any website or app that supports RFC 6238 / Google Authenticator QR codes or Base32 secret keys works seamlessly with this tool.

Looking for a browser extension with built-in 2FA & Passwords?

Try Dodo Password Manager — our free zero-knowledge Chrome extension with AES-256 encryption, autofill, passkeys, and integrated TOTP codes.