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XML

XML Formatter and Validator

Paste or upload XML to locate parser errors and make nested elements easier to review.

How this tool works

Browser DOM parsing checks well-formedness. Formatting adds indentation around element-only content while leaving mixed text and xml:space=preserve content serialized without inserted whitespace.

This checks XML syntax, not XSD validity. DTD and entity declarations are rejected; indentation can change inter-element whitespace and lexical details, so review documents where whitespace is significant.

Examples

  • Format a nested response envelope.
  • Catch an unclosed tag.
  • Preserve text around inline elements.

Common use cases

Read a nested XML response during integration debugging.

Worked synthetic example

Valid example

<order><id>1</id></order>

Expected: Indented order and id elements. Whitespace is added only around element-only content.

Failure or warning to recognize

Invalid/failure example

<order><id>1</order>

Expected: An unclosed id tag produces an XML parser error; no formatted document is returned.

Related guides

Debugging XML API Responses

Official references

Related tools

XPath TesterSelect XML nodes and values using browser XPath 1.0 and namespace mappings.XML and JSON ConverterConvert XML and JSON using explicit attribute, text, and repeated-element rules.Content-Type InspectorParse media type, subtype, charset, boundary, and other Content-Type parameters.
XML Formatter and Validator: Check XML well-formedness and indentation | DevPouch