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Format and pretty print any XML document instantly. Get clean, consistently indented XML output with a single click — all running locally in your browser.
An XML formatter takes minified or poorly structured XML and adds consistent indentation and line breaks to make it easy to read and understand. Whether you are working with SOAP messages, configuration files, RSS feeds, SVG documents, or REST API responses that return XML, a good formatter saves significant time when navigating complex structures.
JSON Viewer Pro's XML formatter uses the native browser DOMParser to parse and reserialise your XML with precise indentation. It preserves XML declarations, CDATA sections, processing instructions, and comments. Choose between 2-space, 4-space, or tab indentation to match your project style. The formatted output is displayed in the Monaco code editor with full XML syntax highlighting.
All XML formatting runs entirely in your browser — no data is uploaded to any server. This makes it safe to use with XML files that contain sensitive data such as configuration files, API credentials, or internal system definitions. The formatter works offline after the first page load as part of the JSON Viewer Pro Progressive Web App.
An XML formatter adds consistent indentation and line breaks to XML to make it human-readable.
Yes. All formatting runs locally in your browser. Your XML is never uploaded to any server.
Yes. The formatter preserves all namespace declarations and prefixes in the output.
JSON Viewer Pro — all processing runs locally in your browser. Your data is never sent to any server. Free to use, no account required.Privacy Policy·Contact