XML Formatter & Minifier

It re-indents the document by nesting depth so the structure is easy to read, putting each element on its own line. Whitespace between elements is normalized.

It removes the whitespace between elements and the indentation, collapsing the document to a single line — useful for compact storage or transport.

Yes. Comments, CDATA sections and processing instructions are preserved, and special characters in text and attributes are properly escaped.

The document is parsed with the browser's XML parser. If it isn't well-formed, an error message is shown instead of broken output.

Not for every document. Indentation adds whitespace between elements, which is invisible in most formats but is data in a few: mixed content where text sits alongside child elements, and any element carrying xml:space="preserve". Reformat configuration and data files freely; be careful with documents that hold prose.

Because this is an XML parser and HTML is not XML. Unclosed tags like br and img, unquoted attribute values and named entities beyond the five XML defines are all legal HTML and all fatal errors here. That strictness is the point — it catches the mistakes an HTML parser would silently repair.