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XML formatter & validator

Validate XML and format it with configurable indentation and mixed-content handling.

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Less switching. More focus.Functional build · Validation in progress

Using this tool

Validate XML tags and entities and format indentation while preserving mixed text.

Actions: Format · Validate

Example

Choose Format, two-space indentation, and collapsed mixed text content.

Example action and settings

Action: Format
Indentation: 2 spaces
Collapse mixed text content: On

Input / action

<root><item>Hi</item></root>

Result / expected behavior

<root>
  <item>Hi</item>
</root>

Available options: Indentation · Collapse mixed text content

Scope and limitations

  • Rejects DTD and entity declarations; this is not XSD or business-rule validation.

Common mistakes

  • Opening and closing tags must match; represent text ampersands using valid entities such as &amp;.

Related tools

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Privacy and browser support

Input is processed in this browser. Do not use real keys or active sensitive credentials as demonstration data. Device features require browser support and your permission.