XML Formatter / Validator
Format, minify, and validate XML. Pretty-print and check well-formedness. Free online XML formatter and validator.
XML formatter and validator
Result
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What is this?
An XML formatter adds indentation for readability or removes whitespace for smaller files. An XML validator checks well-formedness (matching tags, valid structure) and reports errors. XML uses tags like <element>content</element> and requires proper nesting. Common issues include unclosed tags, unescaped < or & in text, and invalid attribute syntax. The formatter makes nested structures readable. The validator uses the browser's parser to catch errors. All processing is client-side for data privacy. Handles both small snippets and larger documents.
When to use
Use to debug XML configs, SOAP responses, or RSS feeds. Example: Minified XML → readable with indentation. Unclosed tags or invalid chars → parser error with location. Developers working with SOAP or legacy APIs need XML tools. RSS feed publishers validate their feeds. Config files in XML format need formatting. Data migration often involves XML. Essential for enterprise integration and document processing.
How to use
Paste your XML and choose Format (pretty-print), Minify (compact), or Validate. Format uses 2 or 4 spaces. Invalid XML shows the parser error. All processing runs in your browser.
Frequently asked questions
- Formatting (pretty-printing) adds indentation and line breaks to make XML readable. Minifying removes extra whitespace for smaller file sizes.
- Common issues: unclosed tags, mismatched tags, invalid characters, unescaped < or & in text, or malformed attributes. The validator shows the parser error.
- No. All processing runs in your browser. Your data never leaves your device.