2FA用QRコードジェネレーター

このツールの使い方

1. 1

   Type the service name into the first field (this becomes the issuer label, e.g. RevealTheme).

2. 2

   Enter the account identifier, usually the user's email or username.

3. 3

   Paste an existing Base32 secret, or click Random to generate a fresh 32-character one with crypto.getRandomValues.

4. 4

   Scan the QR code that appears below with your authenticator app, or copy the otpauth:// URI shown under it.

2FA用QRコードジェネレーターとは何ですか？

よくある活用例

• 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.

よくある質問