Show HN: Twofa.dev – Local first and offline 2FA/TOTP debugger

Hey HN, my name's Mauro Casas.

I found myself constantly testing and debugging users at the company I work at, and we have strict 2FA requirements for our user base, thus I had to deal constantly with new tokens.

I got tired of using my phone and wanted to have a handy tool which works offline, doesn't require a server and is entirely client-side.

I built https://twofa.dev (open-source) within a few prompts and I'm pretty happy on how it turned out!

Would love to hear feedback!