USEFUL TOOLS. LESS HASSLE.Clean Indentation
Nested elements are indented consistently, with 2 spaces, 4 spaces or tabs.
DEVELOPER TOOL / XML
Free Online XML Formatter & Validator
Format, indent and validate XML in your browser. Spot well-formedness errors with line and column details, or minify XML into a single line.
Handles attributes, namespaces, comments, CDATA and processing instructions, and keeps your XML declaration.
✓ Free to use · No signup required · Processed in your browser
XML Formatter workspace
PASTE XML · FORMAT OR MINIFY · CHECK FOR ERRORS · COPY
Paste XML and click Format XML.
XML WORKSPACEMOSANKIT / DEVELOPER TOOLS
THE BASICS
What Is an XML Formatter?
XML is a structured text format used in feeds, sitemaps, configuration files, SOAP services and many data exchanges. An XML formatter adds consistent indentation and line breaks so the nesting is easy to follow.
Because it uses the browser's own XML parser, it also tells you whether your XML is well-formed — and where it is not.
BUILT FOR THE JOB
Key Features of MoSanKit XML Formatter
Well-formedness Check
Mismatched or unclosed tags are reported with a line and column number.
Minify XML
Remove insignificant whitespace to create a compact single-line version.
Keeps the Details
Namespaces, attributes, comments, CDATA sections and the XML declaration are preserved.
Copy or Download
Copy the result or save it as an .xml file.
Private by Design
Everything runs locally in your browser.
QUICK AND SIMPLE
How to Format XML
01 / PASTE
Paste your XML
Paste XML into the input box.
02 / INDENT
Choose an indent
Pick 2 spaces, 4 spaces or a tab.
03 / FORMAT
Click Format XML
See clean, nested XML — or an error with its location.
04 / EXPORT
Copy or download
Copy the result or download an .xml file.
MADE FOR EVERYDAY WORK
Who Can Use This Tool?
DevelopersRead API responses and configuration files.
SEO SpecialistsCheck XML sitemaps and feeds.
System AdminsReview config and deployment files.
Data EngineersInspect XML exports and imports.
QA EngineersValidate test payloads.
StudentsLearn how XML is structured.
GOOD TO KNOW
A few things, answered.
Quick answers about using the MoSanKit XML Formatter.
It checks that the XML is well-formed (properly nested and closed). It does not validate against an XSD or DTD schema.
Only whitespace between elements changes. Text values, attributes, comments and CDATA are preserved.
Text next to child elements is kept and placed on its own line, which is easiest to read but can add visible whitespace in mixed-content documents.
Yes. A leading <?xml … ?> declaration and a DOCTYPE are kept at the top.
It works with large pasted XML, limited only by your browser and device memory.
No. Processing happens entirely in your browser.
KEEP BUILDING
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