Does it check if my XML is well-formed?

Yes, it validates the XML and flags issues like mismatched or improperly nested tags.

Can I go from formatted back to minified?

Yes, both directions are supported — expand for readability, or minify for production.

Does formatting change the actual data in the XML?

No, only whitespace and indentation change — the actual elements, attributes and content stay exactly the same.

Does XML Formatter upload my files to a server?

No. XML Formatter runs entirely in your browser using on-device processing, your files never leave your device.

XML Formatter

Format, validate and minify XML.

Runs in your browser

XML input

About this tool

Minified or poorly indented XML is very hard to read and debug, while validating that it's actually well-formed XML (matching tags, proper nesting) isn't something you can reliably do just by eye. This tool formats, validates and minifies XML, giving you both a properly indented, readable version and confirmation that the XML is actually valid.

Frequently asked questions

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