Does validation use an XSD or DTD?

No. It checks well-formedness, including attributes, nesting and the document root, but not external schema rules.

Can minification damage text spacing?

It removes structural indentation only where safe. Mixed content, CDATA and xml:space-preserved text are not blindly collapsed.

Which constructs are retained?

Declarations, namespaces, comments, CDATA, processing instructions, attributes and self-closing elements are supported.

Does Tree view render XML as a webpage?

No. Elements and text are inert expandable nodes. Nothing is executed or uploaded.

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XML Formatter & Validator

Restructure well-formed XML for reading or compact delivery while preserving meaningful text, declarations and node types.

XML Input

Drop an .xml file onto the editor, or paste XML directly. Tab inserts the selected indentation.

Enter or upload XML to view the result.

Your XML is processed locally in your browser and is not uploaded.

How to use XML Formatter & Validator

1
Paste XML, choose a local .xml file or load the sample.
2
Select 2 Spaces, 4 Spaces or Tabs for formatted output.
3
Click Format or Minify; both first verify well-formedness.
4
Correct any parser location before opening Formatted or Tree view.
5
Copy the processed markup or download it as XML.

Frequently asked questions

About XML Formatter & Validator

XML whitespace can be decorative or meaningful, so safe cleanup requires more than deleting gaps between tags. The formatter adds indentation around structural nodes while respecting mixed text and preservation directives; Minify follows the same cautious model in reverse.

Malformed markup is reported rather than repaired with HTML rules. Tree view reveals attributes, CDATA, comments and processing instructions without activating the document. This is a well-formedness checker, not an XSD or DTD validator.