XML Formatter
Format, indent and validate XML in your browser using a real parser — with clear errors for malformed documents. Free.
XML formatter
Paste XML to validate and indent it neatly.
Features
Common use cases
- 1Cleaning up minified XML
- 2Reading an RSS or sitemap feed
- 3Formatting a SOAP payload
- 4Debugging an API XML response
- 5Preparing XML for a diff
- 6Checking XML is well-formed
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About XML formatting
An XML formatter re-indents an XML document so its structure is readable. This tool parses your XML with the browser's real DOMParser, so it also tells you when the document is not well-formed (mismatched or unclosed tags), then re-serializes it with consistent indentation.
Attributes and comments are preserved, and everything runs in your browser — your XML is never uploaded. Use it for feeds, config files, sitemaps and API payloads.
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Got Questions? We Have Answers.
Does it validate the XML?
Yes. It parses with the browser real DOMParser, so it reports when a document is not well-formed (mismatched or unclosed tags).
Are attributes and comments kept?
Yes. Attributes and comments are preserved; only whitespace between elements is reformatted.
Is my XML uploaded?
No. Parsing and formatting happen entirely in your browser.
What can I format?
Any XML — RSS and sitemap feeds, SOAP payloads, config files and API responses.