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XML Formatter

Code

Format and minify XML with validation

Paste single-line or minified XML from a SOAP payload or a config file and get it reformatted with proper indentation for debugging, or run it in reverse to strip whitespace and comments before embedding it compactly somewhere else. Malformed XML gets a validation error pointing at roughly where the nesting or closing tags went wrong, which is a faster way to spot a mismatched tag than scanning a wall of unformatted markup by eye. CDATA sections and comments are preserved exactly as written rather than reformatted or stripped during formatting, and empty element pairs get collapsed to self-closing tags for cleaner output. This checks well-formedness only; it doesn't validate against an XSD or DTD schema, so a well-formed document with the wrong structure for its intended schema will still pass here.

xmlformatminifyvalidate

How to use XML Formatter

  • 1.Paste minified or single-line XML to get properly indented, readable output for debugging a SOAP response or config file.
  • 2.Minify a formatted XML document to strip whitespace before embedding it in a payload or reducing file size.
  • 3.Paste malformed XML to see a validation error pointing at the unclosed tag or mismatched element causing the parse failure.

Frequently asked questions

Does this validate against a schema (XSD/DTD)?
No, it only checks that the XML is well-formed (proper nesting, closed tags, valid syntax) — it doesn't validate against an XSD or DTD schema for structural correctness.
Is my XML sent to a server?
No, formatting and validation happen entirely in your browser.
Does it preserve CDATA sections and comments?
Yes, CDATA blocks and comments are preserved as-is during formatting and minification, not stripped or parsed as regular elements.
What indent size does it use?
It typically defaults to 2-space indentation with an option to adjust, similar to most code formatters.

Use via API, SDK, or MCP

cURL# Free: 1,000 req/day · Pro: 10,000 req/day
curl -X POST https://api.utilix.tech/v1/tools/xml-format \
  -H "Authorization: Bearer utx_live_..." \
  -H "Content-Type: application/json" \
  -d '{"input": "<root><item id=\"1\"><name>Alice</name></item></root>"}'

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