DevJSON is the all-in-one JSON & XML toolkit for developers. Beautify, minify, and validate both formats with precise error locations. Explore data in a collapsible tree view with one-click path/XPath copy. Syntax-highlighted code view, structure-aware search, dark/light mode, and full keyboard shortcuts. 100% local — no servers, no accounts, nothing leaves your browser. Free, fast, and built for devs tired of sketchy formatter websites.