XML Validator Online
Check whether XML is well formed and find syntax errors with line and column details when available. Runs locally; it does not validate XSD or DTD.
Your data is processed locally in your browser.
Well-formed XML validation
The tool checks XML syntax, including tags, attributes, roots, and proper closing. It does not validate XSD or DTD compliance.
Security and privacy
You can paste or load an .xml file and download the exact input text. DOCTYPE is rejected to avoid external entities, and no network requests are made.
Your data is processed locally in your browser and is not sent to Utilsha.
Frequently asked questions
What does well-formed XML mean?
It has one root element, properly nested and closed tags, valid attribute syntax, and a structure the XML parser can read.
Which XML errors can it detect?
It detects empty documents, unclosed or incorrectly nested tags, malformed attributes, multiple roots, and other errors reported by the browser parser.
Are valid XML and well-formed XML the same?
No. This tool checks well-formed syntax; it does not verify business rules or compliance with an XSD or DTD schema.
Is the XML sent to a server?
No. Analysis runs locally in your browser and makes no network requests.
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