Paste minified or poorly formatted XML and get a clean, indented version instantly. Syntax errors are highlighted inline. All processing happens in your browser — your data never leaves your machine.
XML Formatting (also called "pretty-printing" or "beautifying") takes compact or minified XML and re-serializes it with consistent indentation and line breaks so that each element is on its own line and nesting is visually obvious. This makes large XML payloads — such as API responses, configuration files, and data exports — dramatically easier to read, debug, and review in code diffs.
Beyond cosmetic improvements, a well-structured XML formatter also validates the input: it catches unclosed tags, mismatched elements, illegal characters, and other syntax errors that would cause downstream parsers to fail. Fixing these issues early — before they surface in production — is one of the most practical time-saving habits in back-end and integration development.
pom.xml or Spring XML
DOMParser
pom.xml, Spring, Android manifests, and more
There are two distinct levels of correctness for an XML document. A well-formed document follows the basic syntax rules of XML: every opening tag has a matching closing tag, attributes are properly quoted, special characters are escaped, and there is exactly one root element. All XML parsers enforce well-formedness — a document that violates these rules will cause a parse error.
A valid document goes further: it also conforms to a schema (either a DTD or an XSD file) that defines which elements and attributes are permitted, their order, and their data types. Validation against a schema requires access to the schema document and is typically done in build pipelines or integration tests using tools like xmllint, Saxon, or dedicated XML editors. This formatter checks only well-formedness, which catches the vast majority of real-world bugs encountered when working with XML manually.