Top2FA

Client-side

Secure TOTP 2FA Authenticator & Bulk Code Generator

2FA Authenticator
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Add 2FA Keys

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Auto-detects: Raw secret, 2fa:KEY, or UID|PASS|2FA

Your 2FA Codes

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30 seconds
30s

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Paste your 2FA secret keys in the editor above to generate live 6-digit codes.

Security & Privacy
Client-side
  • 100% processed in your browser
  • Never sent to any server
  • Local encrypted storage
Smart Pro Tips
  • ⚡Click directly on the 6-digit code to copy instantly
  • ⌨️Press Ctrl + Enter inside editor to generate codes
  • 📷Scan 2FA QR codes via phone Camera or laptop Webcam
  • 📶Works 100% offline without internet connection
Syntax Status
Valid (0 errors)

Instructions

  • 1.Enter or paste 2FA secret keys (one per line).
  • 2.Supports: otpauth://, 2fa:KEY, or delimited lines (UID|Pass|2FA).
  • 3.Auto-detects 2FA secret from email/password strings.
  • 4.Click the 6-digit code or COPY to copy instantly.
  • 5.Click Create 2FA Link to generate a reusable link (top2fa.com/your-key) that auto-fills your 2FA next time.
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⚡About Top2FA & Frequently Asked Questions

100% Client-Side TOTP 2FA Authenticator & Hotmail / Outlook OAuth2 Mailbox Reader.

1. How does Top2FA work and is it secure?▾

Top2FA is a 100% client-side TOTP authenticator (RFC 6238) powered by the native browser Web Crypto API. Your private 2FA secrets are never transmitted to any remote server. The app works fully offline once loaded.

2. How to import bulk 2FA accounts for MMO▾

Easily import hundreds of accounts at once. Paste standalone keys, common credential formats (UID|Pass|2FA), or standard otpauth:// URIs. All tokens update simultaneously with a synchronized 30-second live ring.

3. What is the Hotmail / Outlook OAuth2 Mail Reader?▾

The Mail Reader tool (/read-mail) lets you fetch verification codes and OTP messages from Hotmail/Outlook mailboxes in 1 second via Microsoft Graph API and OAuth2 without opening the Outlook web interface.

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RFC 6238 TOTP • SHA-1 • 30s Step