XML Formatter Online

Why use an XML formatter?

Compact or minified XML is hard to read and debug. A formatter restructures the markup with consistent indentation so you can quickly verify element hierarchy, spot missing tags, and review attribute values. This is especially useful when working with SOAP responses, config files, API payloads, or any system-generated XML that arrives as a single line.

How it works

The formatter uses the browser's built-in DOMParser to parse your input. If the XML is well-formed it outputs an indented string; if it contains errors you get a clear parser message so you can locate and fix the issue.

FAQ

Is this free?

Yes, completely free to use.

Does my XML get uploaded anywhere?

No. Everything runs locally in your browser tab.

What if my XML is invalid?

An error message shows the parser's description of the problem. Use XML Validator for a dedicated validation check.

Can I use it for large files?

Yes, for normal browser-compatible sizes. Very large payloads depend on your device memory.

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