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XML Formatter
Pretty-print XML with clean indentation, or collapse it back to one line.
Quick Tool Overview
The XML Formatter re-indents a document so its structure is visible: one element per line, children under their parent, text-only elements left on a single line, and CDATA, comments and the declaration preserved exactly.
- What it does
- Re-indents XML, or collapses it back to one line
- You give it
- Any well-formed XML document
- You get back
- Readable XML with consistent indentation
- Best for
- SOAP envelopes, RSS feeds, config files and exports
About the XML Formatter
Machine-written XML arrives as one enormous line. The formatter re-indents it so the structure is visible: one element per line, children indented under their parent, and attributes left on the opening tag where they belong.
A few decisions make the output genuinely readable rather than merely indented. An element holding nothing but text stays on one line, because splitting it would change the content of a whitespace-significant document. Empty elements collapse to the self-closing form. CDATA sections, comments and processing instructions are preserved exactly, and the XML declaration is kept at the top. If the document does not parse you get the line number and what was expected instead.
Key features of the XML Formatter
Text elements stay on one line
A tag wrapping nothing but text is not split, because breaking it would change the content of a whitespace-significant document.
CDATA and comments survive
CDATA sections, comments and processing instructions are copied through untouched, and the declaration stays on the first line.
Empty elements collapse
An element with no content is written in the self-closing form, which is shorter and unambiguous.
Errors are located
A document that will not parse reports the line and names the mismatched, unclosed or stray tag.
Namespaces are safe
Prefixed names such as soap:Envelope and xmlns attributes pass through formatting unchanged.
How to use the XML Formatter
-
1
Paste your XML
A config file, an API response, an RSS feed or a SOAP envelope.
-
2
Choose the indentation
Two spaces, four spaces or a tab, to match the rest of your project.
-
3
Fix any errors
An unparseable document reports the line and the mismatched or unclosed tag.
-
4
Copy or download
Take the formatted document to your clipboard or save it as .xml.
Frequently asked questions
Only whitespace between elements. Text inside an element is preserved, attributes keep their values, and CDATA is copied through untouched.
Almost always a mismatched or unclosed tag, or more than one root element. XML is far stricter than HTML: every tag must close, and nesting must be exact.
Yes by default, and there is an option to strip them when you want the smallest readable document.
Yes. Prefixed element names such as soap:Envelope and xmlns attributes are treated as ordinary names and attributes, so they survive formatting unchanged.
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