Does it validate XML as well as format it?

It validates well-formedness (correct structure and syntax) during formatting. Schema validation (XSD, DTD) is a separate process.

Does it handle XML namespaces?

Yes. Namespace declarations (xmlns:prefix="...") are preserved and handled correctly.

Can I format SOAP envelopes?

Yes. SOAP envelopes are standard XML and will be formatted correctly, including the Envelope, Header, and Body elements.

Best Free Online XML Formatter

XML is used pervasively in enterprise integrations, SOAP APIs, Android manifests, Maven and Gradle build files, SVG graphics, RSS feeds, and countless data exchange formats. Raw or minified XML, with its verbose tag syntax, is particularly hard to read without proper indentation. devtoolkit.sh's XML Formatter parses any valid XML and outputs it with clean, hierarchical indentation, making it easy to see the element structure, find specific nodes, and understand the data model. It validates XML well-formedness during formatting, catching unclosed tags, mismatched elements, missing namespace declarations, and other structural errors with exact error locations. The formatter correctly handles XML declaration headers, CDATA sections, comments, processing instructions, and namespace prefixes. Everything runs in your browser — no server parsing, no data sent anywhere. This makes it safe for formatting sensitive enterprise payloads such as financial transactions, healthcare data exchanges in HL7 and FHIR formats, and configuration files for production systems — with no data ever leaving the device.

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formattedREADY

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FAQ

Does it validate XML as well as format it?: It validates well-formedness (correct structure and syntax) during formatting. Schema validation (XSD, DTD) is a separate process.
Does it handle XML namespaces?: Yes. Namespace declarations (xmlns:prefix="...") are preserved and handled correctly.
Can I format SOAP envelopes?: Yes. SOAP envelopes are standard XML and will be formatted correctly, including the Envelope, Header, and Body elements.