Free XML Formatter & Validator
Format, beautify, and minify XML documents with syntax validation and error detection. Free, fast, and works entirely in your browser with no sign-up required.
XML Formatter
Format, beautify, minify, validate, and convert XML with XPath queries, tree visualization, and syntax highlighting.
Load XML
Input XML
Output
About XML Formatter
Format & Beautify
Transform messy or minified XML into a properly indented, readable format. Choose 2-space, 4-space, or tab indentation. Control attribute formatting and empty element style.
Syntax Highlighting
Color-coded output with distinct colors for tags, attributes, values, comments, CDATA sections, processing instructions, and entity references.
XML Validation
Real-time well-formedness checking with error messages including line and column numbers, plus warnings for common issues like unescaped ampersands.
Minification
Compress XML to minimal size with configurable options: strip comments, remove whitespace, collapse empty tags, or remove XML declarations.
Tree View
Interactive collapsible tree with descendant counts, namespace badges, attribute previews, and a filter to find nodes quickly.
XML to JSON
Convert XML to a structured JSON representation with syntax-highlighted output. Attributes are prefixed with @ and text content uses #text.
XPath Queries
Query XML using XPath expressions with full namespace support. Click nodes in tree view to auto-generate their XPath path.
File Upload & Fetch
Upload XML files via button click or drag-and-drop. Fetch XML from URLs. Supports .xml, .xsl, .svg, .xhtml, .wsdl, .xsd, and more.
Tag Statistics
Detailed analysis of your XML structure: element counts, attribute frequency, tree depth, namespace inventory, and text content metrics.
Frequently Asked Questions
What is the XML Formatter?
The XML Formatter is a free online tool that formats, beautifies, and minifies XML documents with proper indentation and syntax validation.
Is the XML Formatter free?
Yes, it is completely free with no registration required. All formatting happens client-side in your browser.
Can it minify XML too?
Yes, the XML Formatter supports both beautifying (expanding) and minifying (compressing) XML documents.
Is my data safe with this tool?
Absolutely. The XML Formatter & Validator processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.
Does the XML Formatter & Validator work on mobile devices?
Yes, the XML Formatter & Validator is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.
Do I need to create an account to use this tool?
No account or registration is needed. Simply open the XML Formatter & Validator in your browser and start using it immediately. There are no sign-up walls or usage restrictions.
How do I use the XML Formatter & Validator?
Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.
Which browsers are supported?
The XML Formatter & Validator works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.
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About Free XML Formatter & Validator
Free XML Formatter & Validator is a free, browser-based tool in our Code Tools collection. Everything runs locally on your device — no uploads, no sign-up, and your data stays private.