Developer Tools
XML Formatter & Validator
Format messy XML and check that it is well-formed.
Free foreverRuns in your browserNo sign-up
About the XML Formatter & Validator
XML is a tag-based format for structured data, used in configuration, feeds, documents and many APIs.
Paste XML and this tool indents it into a clean, readable structure and checks that it is well-formed, pointing out errors if the tags do not match.
Formatting and validation happen entirely in your browser, so your data is never uploaded.
Key features
- Beautify and indent XML
- Well-formedness validation
- Clear error messages
- Runs entirely in your browser
How to use
- 1Paste your XML into the box.
- 2Click Format & validate.
- 3Copy the tidy, indented result.
Frequently asked questions
- Does it check against a schema (XSD/DTD)?
- No. It checks that the XML is well-formed, meaning the tags are correctly nested and closed. It does not validate against a specific schema.
- Is my XML uploaded?
- No. Formatting and validation run entirely in your browser.