XML Formatter / Validator
Paste XML and instantly format, minify, or validate it locally in your browser.
What is an XML formatter / validator?
An XML formatter makes XML easier to read by adding indentation and line breaks.
An XML validator checks whether your XML is well-formed and helps catch syntax issues such as broken tags, invalid nesting, or malformed declarations.
How to use the XML Formatter / Validator
- Paste your XML into the input field.
- Choose indentation size and comment handling options.
- Click Format, Minify, or Validate.
- Copy the result if needed.
Tips
- Formatting improves readability but does not change XML meaning.
- Validation checks whether XML is well-formed.
- Minify is useful when you need compact XML output.
- Everything runs locally in your browser.
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XML checks before formatting or exchanging a document
Readable indentation does not validate namespaces, schema rules, encoding declarations, entity handling, or application-specific meaning.
Namespaces
Verify namespace URIs, prefixes, default namespace scope, qualified attributes, and XPath queries after formatting.
Whitespace and mixed content
Preserve significant text, xml:space rules, CDATA boundaries, and mixed-content elements where indentation changes data.
Encoding and entities
Keep the declaration aligned with actual bytes and handle entities, DTDs, and external resources with secure parser settings.
Schema validation
Validate against the required XSD, DTD, or application contract and test the final serialized document with the receiver.
Privacy and usage
Built for quick checks without an account
Toolinix tools are designed for short developer tasks: paste a safe sample, inspect the result, copy what you need, and move on.
No login required
You can use the tools without creating an account, subscribing to a newsletter, or saving a workspace.
Local when possible
Formatters, generators, encoders, and text utilities generally run in your browser. Network diagnostics may need a server-assisted lookup to check public URLs, domains, or IPs.
Keep secrets out
Do not paste production passwords, private keys, access tokens, customer records, or regulated data into online tools unless your own security policy allows it.
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