I got tired of the same thing happening every day.

Google "json formatter online." Land on a site from 2011. Click format. Get an ad popup. Format the JSON. Close the tab. Repeat tomorrow.

So I built BuiltItDev — 39 developer tools that run entirely in your browser. No accounts. No paywalls. No data leaving your machine.

Why client-side only?

You're pasting API keys, JWT tokens, internal JSON — that data shouldn't hit someone's backend.