DevUtility Hub – 117 offline developer tools running fully in-browser

Summary: DevUtility Hub offers 117 free developer tools including JSON formatter, JWT decoder, Base64 encoder, regex tester, and hash generators that run entirely offline in the browser with zero tracking or ads. It ensures privacy by processing all data locally without sending it to servers.

What it does

It provides a suite of developer utilities that operate 100% offline using Web APIs, preventing any data from leaving the user's device. The platform is built with Next.js 15, React 19, and TypeScript.

Who it's for

Developers seeking privacy-focused, ad-free, and offline tools for data formatting, encoding, decoding, and testing.

Why it matters

It eliminates reliance on ad-heavy, tracking-prone online converters by offering fast, private, and fully offline developer utilities.