Xwift — XML Viewer & Formatter

View, format & validate XML fast — even big files. Collapsible tree, jumps to errors. Zero data collection, no account.

Open an XML file — or the XML page you're already on — and actually read it. Xwift turns raw XML into a clean, collapsible, syntax-highlighted tree, with a one-click pretty-print / minify source view. And when the XML is broken, it tells you exactly where and why — line and column — instead of dumping plain text or a blank page. • Tree view — color-coded elements, attributes, text, CDATA, comments and processing instructions; expand or collapse everything in one click. • Source view — re-indent (2 / 4 / tab) or minify, with line numbers and copy. • Real validation — a tolerant parser that keeps going on broken input and lists every well-formedness problem with its line:column: mismatched and unclosed tags, duplicate attributes, unbound namespace prefixes, stray content, an unescaped &, a literal ]]>, and more. Click an error to jump to it. • Handles big files — parsing runs off the main thread so the tab stays responsive where "load it all into the DOM" viewers stall. • Namespaces done right — xmlns scopes are tracked and unbound prefixes flagged. Built to respect you: • Zero data collection. Everything runs locally. No network requests with your content, no account, no telemetry. Files you open never leave your browser. • Minimal permissions. No host permissions, no <all_urls>, no tab snooping. It reads a page only the moment you ask it to. • Zero dependencies, open source. The XML engine is hand-written — audit it at https://github.com/jjdoor/xwift