XML formatter
Prettify or minify an XML document.
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About the xml formatter
Prettifies XML with the indentation width you choose, or minifies it by removing whitespace between elements. Documents are validated before formatting, so a mismatched tag is reported rather than silently mangled.
Frequently asked questions
Is whitespace significant in XML?
Inside mixed content, yes — reformatting can alter text nodes. For data-oriented XML with no text between elements, indentation is safe to change.
Why was my document rejected?
XML is strict. Every tag must close, attributes must be quoted, bare ampersands must be escaped, and there must be exactly one root element. The error names the first thing it hit.