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XML Formatter

XML beautify / validate

InputXML
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OutputXML
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Overview: XML Formatter is a professional beautifier and validator for XML documents. Built on the fast-xml-parser engine, it indents tags, aligns attributes and validates that the document is well-formed, so common issues such as unclosed tags or bad attributes are spotted quickly.

How to use: Step 1 — paste the XML you want to work on into the left editor, or click "Sample" to load a test example. Step 2 — the tool formats the XML live and shows the result on the right; if there is a syntax error, an inline hint underneath the input explains the location and cause. Step 3 — each element ends up on its own line, children are indented with 2 spaces, and attributes stay on the opening tag. Step 4 — the tool automatically prepends <?xml version="1.0" encoding="UTF-8"?> if your input does not have it. Step 5 — copy or download the output as a .xml file.

Typical scenarios: Format SOAP Web Service request / response messages while debugging; normalise Maven pom.xml, Android AndroidManifest.xml or Spring configuration files; work with RSS / Atom feeds or SVG graphics; beautify XML data extracted from log files; format standard messages in finance, government and telecom sectors (ISO 20022, HL7 and similar).

Technical notes: The tool validates strictly against the W3C XML 1.0 specification: tags must be balanced (or self-closing), attribute values must be quoted, and illegal characters must be entity-escaped. It does not perform DTD or XSD validation. Comments, CDATA sections (<![CDATA[]]>) and processing instructions (<? ?>) are preserved. Namespace prefixes are kept as-is. Whitespace around text nodes may be normalised.

Privacy: Parsing and formatting happen locally in your browser. The XML you enter is never uploaded, so you can safely process XML files that contain business fields, secret placeholders or internal system configuration.

Frequently Asked Questions

How do I use XML Formatter?
Step 2 — the tool formats the XML live and shows the result on the right; if there is a syntax error, an inline hint underneath the input explains the location and cause. Step 3 — each element ends up on its own line, children are indented with 2 spaces, and attributes stay on the opening tag.
What can XML Formatter do?
Typical scenarios: Format SOAP Web Service request / response messages while debugging; normalise Maven pom.xml , Android AndroidManifest.xml or Spring configuration files; work with RSS / Atom feeds or SVG graphics; beautify XML data…
Is my data private when I use XML Formatter?
The XML you enter is never uploaded, so you can safely process XML files that contain business fields, secret placeholders or internal system configuration. The XML you enter is never uploaded, so you can safely process XML files that contain business fields, secret placeholders or internal system configuration.
What technical details should I know about XML Formatter?
It does not perform DTD or XSD validation. Comments, CDATA sections ( <![CDATA[]]> ) and processing instructions ( <? ?> ) are preserved.