What XML features are supported?

The formatter handles elements, attributes, namespaces, CDATA sections, comments, processing instructions, and XML declarations. All are properly indented and preserved in the formatted output.

Does it validate XML syntax?

Yes. The tool checks for well-formedness errors including unclosed tags, mismatched tag names, invalid characters, and malformed attributes. Errors are reported with line numbers.

Yes. Use the Minify button to strip all unnecessary whitespace, newlines, and indentation. This reduces XML payload size for API transmission or storage without changing the data.

What indentation options are available?

Choose between 2-space or 4-space indentation. Each nesting level is indented consistently. Attributes can optionally be placed on separate lines for complex elements.

Does formatting change the XML data?

No. The formatter only modifies insignificant whitespace between elements. Element content, attributes, CDATA sections, and the logical structure remain identical. The XML is semantically unchanged.

Is my XML data uploaded to a server?

No. All formatting and validation happens entirely in your browser. Your XML data never leaves your device — safe for sensitive configuration files and API payloads.

XML Formatter & Validator Online

How to Format XML

Paste minified or messy XML into the input panel and click Format to beautify it with proper indentation. The formatter validates your XML structure and reports errors with line numbers. Choose between 2-space or 4-space indentation. Use the Minify button to compress XML for production payloads. Convert JSON data to XML with our JSON to XML Converter.

What Is XML?

XML (Extensible Markup Language) is a data format used in SOAP web services, RSS/Atom feeds, SVG graphics, XHTML, Android layouts, and many enterprise integrations. Unlike JSON, XML supports attributes, namespaces, processing instructions, and CDATA sections. Properly formatted XML is essential for debugging API responses and configuration files. Format JSON data with our JSON Formatter.

Common Use Cases

Beautify SOAP API responses for debugging. Format XML configuration files (Maven pom.xml, Spring beans, web.xml). Validate RSS and Atom feed syntax. Clean up SVG files for web use. Minify XML payloads to reduce bandwidth. Format SQL queries with our SQL Formatter. All processing runs in your browser — your XML data stays private.

XML Formatter & Validator

How to Format XML

What Is XML?

Common Use Cases

Frequently Asked Questions

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