XML Studio — Offline XML Editor & Toolkit

XML Studio is a small, private XML workbench that runs entirely in your browser — no sign-in, no uploads to a server, and no tracking.

Edit comfortably

• Source editor with line numbers, find/replace and instant well-formedness checks
• Interactive tree editor: edit element names, attributes and text, add/delete nodes, move siblings
• Source, Tree and Split views with Undo/Redo snapshots

Understand and transform XML

• XML formatter and minifier
• XPath 1.0 explorer with namespace lookup and clickable node results
• Structure-aware XML comparison (attributes compared independent of order)
• Ordered XML-to-JSON bridge with a matching JSON-to-XML converter
• Copy and download results without uploading anything

Privacy by design — fully local in the browser. DTDs, external entity declarations, and XML stylesheets are rejected for safety.

Important limitations: This is a practical free tool for XML development and inspection, not an XSD validator or a full XML IDE. The JSON format is an explicit node-tree representation, and whitespace-only XML text can change during formatting. Maximum XML file size: 1 MiB. XPath engine: 1.0.

Version 1.0.0 · Free · MIT-licensed

Use Run tool to start. The source package is available below for offline use and customization.