About CodeUtilityKit

CodeUtilityKit is a free, privacy-first collection of 110+ developer tools that run entirely in your browser. From formatting JSON and decoding JWTs to generating hashes, converting CSV, testing regular expressions and picking colors, everything you need for daily development work lives in one fast, distraction-free place.

Privacy by design

Unlike many online tools, CodeUtilityKit has no backend that processes your data. Every tool runs locally using JavaScript in your browser. Your JSON, tokens, passwords, and files are never uploaded, logged, or stored on any server. That means you can safely work with sensitive data — and the tools even keep working offline.

Free forever

There are no accounts, no subscriptions, no paywalls, and no usage limits. We believe essential developer utilities should be fast, reliable, and free for everyone.

Built for developers

Each tool is designed to be immediately usable: paste your input, get your result, copy or download it, and move on. Clean UI, keyboard-friendly, responsive on mobile, and dark-mode aware.