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XML Formatter & Validator Online Free

Format, indent and validate XML documents instantly in your browser.

code XML Formatter & Validator Online Free
verified_user Your files are processed only as needed and are not stored after the tool finishes.
XML is widely used in configuration files, SOAP APIs, RSS feeds, and data exchange. Our free XML formatter parses any XML string and outputs it with clean, consistent indentation. It also validates the structure and shows clear error messages for malformed XML. Works entirely in your browser using the native DOMParser — nothing is sent to a server.

Frequently Asked Questions

What XML versions are supported? expand_more
The tool works with XML 1.0 documents, which covers the vast majority of real-world XML. It supports all standard XML features including namespaces, CDATA sections, and processing instructions.
Can I use this to check if my XML is valid? expand_more
Yes. The formatter shows a clear error message if the XML is malformed, including the location of the error.

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