2fa-tool-extension
2FA TOTP verification code generator Chrome extension
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2FA Tool is a free, open-source two-factor authentication code generator that runs entirely in your browser. It serves as a lightweight, web-based alternative to mobile authenticator apps — no phone required.
What it does:
Enter your TOTP secret key, and 2FA Tool instantly generates a 6-digit verification code that refreshes every 30 seconds. It supports the standard TOTP (Time-based One-Time Password) algorithm used by virtually all major platforms.
Why install it:
- No phone needed. Lost your phone? Battery dead? 2FA Tool lets you generate verification codes directly from your browser, so you're never locked out of your accounts.
- 100% local & private. Your secret keys are processed and stored entirely on your device. Nothing is ever sent to a server. Your credentials stay yours.
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