Implementing two-factor authentication (2FA) is a critical step for securing any online application, but testing OTP or TOTP flows can be cumbersome. Developers often need reliable tools to generate codes quickly for testing purposes without relying on SMS or third-party apps.
2fa.cn
is a free, browser-based tool that solves this problem. It allows you to generate OTP and TOTP codes instantly, all without registration or software installation.
How 2fa.cn Helps Developers:
Quick Testing: Generate OTP/TOTP codes on the fly for your authentication flows
Safe & Private: All codes are generated in-browser, no data is sent externally
Simple & Reliable: No setup, no dependencies, works across all devices
Free & Open: Perfect for small projects or enterprise testing
Use Cases:
Testing 2FA in web or mobile applications
Personal account security testing
Educational purposes to understand how TOTP/OTP works
By incorporating 2fa.cn into your workflow, developers can save time, increase testing efficiency, and ensure security without the hassle of setting up additional tools.
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