DevToolkit is a collection of fast, free, privacy-first online tools built for developers who just want things to work. Unlike bloated platforms filled with ads, signups, and tracking, DevToolkit runs entirely client-side — your data never leaves your browser. It includes essential tools like JSON Formatter & Validator, Base64 Encoder/Decoder, UUID Generator, Hash Generator, timestamp converters, and more — all in a clean, distraction-free UI designed for daily use.