BuiltItDev is a collection of 39 developer tools that run entirely in your browser. JSON formatter, Base64, regex tester, JWT decoder, hash generator, color converter, markdown previewer, URL encoder and more. Everything is client-side — your data never leaves your machine. No sign-up required. No paywalls. Just open the tool and use it. Built with Next.js, TypeScript, fully static. Each tool has its own URL so you can bookmark exactly what you need.
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Maker
📌
Hey Product Hunt!
I built BuiltItDev after getting frustrated with every "online dev tool" site being slow, outdated, or requiring an account to use a textbox.
The one rule I set for myself: everything had to run client-side. No sending your JWT tokens, API keys, or internal JSON to someone's server.
39 tools live right now. Shipping more based on what people actually ask for.
Two questions for the PH community:
What tool do you wish existed as a clean browser version?
What's the most-used tool site in your bookmarks right now?
Happy to answer anything about the build — stack, decisions, what's next.