An XML formatter (also known as an XML beautifier or XML prettifier) takes compact, unindented, or minified XML documents and formats them with consistent indentation, line breaks, and aligned tags. This improves human readability, simplifies debugging SOAP web service envelopes or configuration files, and accelerates code reviews.

This tool operates 100% locally in your web browser tab using high-performance pure JavaScript parsing and serialization. Your data never leaves your device and is never transmitted to any external server, guaranteeing complete privacy for sensitive API payloads and configuration files.

The parser checks that your document adheres to W3C XML 1.0 well-formedness rules: matching open/close tags, properly nested element hierarchies, valid tag names, quoted attribute values, and a single root element. If an error is detected, the exact line number, column index, and visual error pointer are reported.

XML attributes are mapped into a configurable attribute prefix (default '@attributes' or direct keys). Child elements with identical tag names are automatically grouped into clean JSON arrays, ensuring seamless compatibility with RESTful JSON APIs and NoSQL databases.

Yes. Switch to the 'DOM Tree View' tab to explore an interactive collapsible tree where you can expand/collapse individual elements, inspect attribute key-values in highlighted colors, and view text payloads.

Yes. In the Formatting Options panel, you can toggle 'Remove Comments' to strip <!-- ... --> blocks and enable 'Self-Close Empty Tags' to collapse <element></element> into <element /> for cleaner, lightweight markup.

Yes. CDATA blocks (<![CDATA[...]]>) containing unescaped raw characters or HTML snippets are preserved intact without double-escaping.

Press `/` from anywhere on the page to focus the XML editor. Use `Alt+K` or `?` to open the Keyboard Shortcuts Guide, `Alt+S` to open Developer API code snippets across 8 languages, `Alt+V` to switch between 2-Column Split and Full-Width Stacked layout densities, `Alt+R` to load a random benchmark scenario, and `Ctrl+Enter` (or `Cmd+Enter` on macOS) to instantly copy the output.

Press Alt+S or click the API Code button to open the Developer API Studio modal. You will find ready-to-use production code snippets for Node.js (fast-xml-parser), Python 3 (minidom & ElementTree), Go (encoding/xml), Rust (quick-xml), Java (DocumentBuilder & Transformer), C# (.NET XDocument), PHP (DOMDocument), and Bash (xmllint).

Yes. In the Export Suite, you can define your custom base filename, toggle optional ISO date stamps (_YYYY-MM-DD), see a live filename preview pill, and download formatted XML (.xml), converted JSON (.json), raw text (.txt), or a detailed JSON transformation audit report.