# I built a free developer tools site that works entirely in your browser

> Source: <https://dev.to/anshul_d/i-built-a-free-developer-tools-site-that-works-entirely-in-your-browser-3cip>
> Published: 2026-05-22 20:50:06+00:00

Every developer has been there.
You need to quickly decode a JWT token or format some JSON. You Google it, click the first result, and boom — "Sign up to continue." Or worse, "Watch this ad to see your result."
I got tired of it. So I built my own.
CodeToolkit is a collection of 14 free developer tools that run entirely in your browser. No login. No tracking. No server. You paste your input, you get your output. That's it.
Link: https://codetoolkit-lime-two.vercel.app
Encoding
JSON
CSS
Converters
Generators
Simple — faster load time, works offline, zero build step. A dev tools site should be fast. Nobody wants to wait for React to hydrate just to encode a Base64 string.
Planning to add more tools every week. Some ideas:
What tools do YOU wish existed? Drop them in the comments — I'll build them.
If this helped you or you find yourself using it, share it with a dev friend who's tired of sign-up walls too.