2FA QR Code 產生器

為 Google Authenticator、Authy、1Password 及其他 2FA 應用程式產生 TOTP QR Code。

如何使用本工具

1
Type the service name into the first field (this becomes the issuer label, e.g. RevealTheme).
2
Enter the account identifier, usually the user's email or username.
3
Paste an existing Base32 secret, or click Random to generate a fresh 32-character one with crypto.getRandomValues.
4
Scan the QR code that appears below with your authenticator app, or copy the otpauth:// URI shown under it.

兩步驟驗證應用程式會掃描以 QR Code 形式編碼的 otpauth:// URI，以設定以時間為基礎的一次性密碼（TOTP，RFC 6238）。本工具會根據服務名稱、帳戶識別碼和 Base32 金鑰建構該 URI，然後將其轉譯為可掃描的 QR Code。

Demoing a 2FA enrollment flow in a tutorial, slide deck, or product screenshot without wiring up a real backend.
Generating a test TOTP secret while developing or QA-testing a login system that uses standard SHA1/6-digit/30-second codes.
Re-encoding a Base32 secret you already hold (for example from a recovery backup) into a fresh scannable QR.
Teaching teammates how the otpauth:// Key URI Format is structured by showing the URI printed beneath the QR.
Quickly checking whether an authenticator app accepts the default TOTP parameters before committing to a server-side library.
Creating a throwaway 2FA setup for a sandbox or staging account where the secret does not protect anything sensitive.

金鑰會被傳送到任何地方嗎？▼

QR Code 的轉譯使用了外部服務（api.qrserver.com）。為獲得最高安全性，請僅將其用於測試金鑰；對於正式環境的 2FA 設定，請使用伺服器端產生。