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XML Formatter & Validator

XML Formatter & Validator

Format, beautify, and validate XML documents. Fix indentation, check syntax, and minify XML code.

Formatted XML

Configure inputs and run the tool

Results will appear here

About this XML Formatter & Validator

The XML Formatter & Validator is a free online tool for formatting, beautifying, and validating XML documents. XML is widely used for data interchange, configuration files, web services (SOAP), RSS feeds, and document formats. This tool helps you fix messy XML, validate syntax, and produce clean, readable XML output. All processing happens in your browser — your XML data never leaves your device.

How to use the XML Formatter & Validator

  1. 1 Paste your XML content into the "XML Input" field.
  2. 2 Select the action: Format/Beautify to add proper indentation, or Minify to compress.
  3. 3 Click the Run button to process your XML.
  4. 4 View the formatted output or any validation errors if your XML has syntax issues.

Frequently Asked Questions

What does XML formatting do?
XML formatting adds proper indentation and line breaks to make your XML human-readable. It organizes nested tags so you can easily see the structure of your document. This is especially useful for debugging XML from APIs or configuration files.
How does the validator work?
The formatter also validates your XML syntax. It checks for common errors like missing closing tags, unquoted attributes, invalid characters, and improper nesting. If errors are found, it reports them with line and character positions.
Can I minify XML for production?
Yes, the Minify option removes all unnecessary whitespace from your XML, creating a compact single-line version. This reduces file size for XML APIs and configuration files where bandwidth matters.
What is the difference between XML and HTML formatting?
XML formatting follows the same indentation rules as HTML but XML has stricter syntax requirements — all tags must be properly closed, attribute values must be quoted, and document must be well-formed. HTML tolerates missing quotes and unclosed tags while XML does not.

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