About The XML Formatter and Validator

The XML Formatter and Validator checks whether XML is well-formed, then formats it for review or minifies it for compact output. It is useful for API payloads, SOAP messages, sitemap fragments, config files, data feeds, and copied XML snippets that need a quick parse check.

The parser runs in your browser and uses standard XML parsing rules. The tool checks well-formedness, not whether the XML matches a specific DTD, XSD, feed schema, or application contract.

How to Format XML Online

1. Paste XML into the XML input area.
2. Click Validate to check whether the XML parses cleanly.
3. Click Format to add line breaks and indentation for easier inspection.
4. Click Minify to remove whitespace between tags for a compact result.
5. Use Copy Output after formatting or minifying the XML.

Choosing Actions Correctly

Validate:
Use this when you only need to confirm that tags, nesting, and XML syntax are valid.

Format:
Use this for debugging, reviewing nested elements, comparing structure, or pasting XML into a ticket or document.

Minify:
Use this for compact transport or storage when the XML is already correct and human readability is less important.

Common Use Cases

• Clean up XML copied from logs, APIs, or browser responses.
• Check sitemap or feed fragments before using a dedicated validator.
• Make SOAP or integration payloads readable before debugging fields.
• Compact XML after confirming it is well-formed.

Quick FAQ

Does this validate against an XSD?
No. It checks XML well-formedness, not schema-specific rules from an XSD or DTD.

Can formatting change my XML?
It should preserve elements and attributes, but whitespace inside text nodes can matter in some XML documents. Review the result before replacing source files.

Should I paste private XML here?
Avoid secrets, customer data, and private configuration unless your workflow permits browser-based tools.

When should I minify XML?
Minify when size matters and whitespace is not semantically important. Keep formatted XML for debugging, review, and version control.