XML Formatter & Beautifier

Paste raw XML to format it with readable indentation, validate its syntax, or minify it into a compact string.

About the XML Formatter

XML (Extensible Markup Language) is a widely used format for configuration files, data interchange, document formats (SVG, XHTML, Office Open XML), and APIs such as SOAP and RSS. Minified XML removes all unnecessary whitespace to reduce payload size, while formatted XML adds consistent indentation to make deeply nested structures readable.

This tool validates your XML before formatting using the browser's built-in DOMParser. If a syntax error is found, the error message describes the problem so you can fix it quickly. All processing happens in your browser — sensitive XML data never leaves your machine.

Frequently Asked Questions

What does the XML formatter do?

The formatter parses your XML and re-outputs it with consistent 2-space indentation and one element per line, making deeply nested structures easy to read and navigate.

What does minify do?

Minify strips all whitespace between tags to produce the most compact valid XML string. This is useful before embedding XML in API payloads or configuration where file size matters.

Does the formatter validate my XML?

Yes. Before formatting or minifying, the tool parses your XML using the browser's built-in DOMParser. If the XML is malformed, an error message is shown describing the problem.

Does it handle XML declarations and processing instructions?

Yes. Lines such as <?xml version="1.0"?> and <?xml-stylesheet ...?> are preserved and placed correctly at the top of the output.

Is there a size limit?

There is no enforced limit, but very large XML documents may slow down your browser. The DOMParser processes the entire document in memory, so documents over a few MB may take a moment to parse.

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