XML Formatter

Format and beautify XML documents with proper indentation and structure

XML Formatter & Beautifier — Format, Indent, and Validate XML Documents with Adjustable Indentation and Instant Minification

  1. Paste your XML code into the input textarea. The tool accepts any well-formed or malformed XML — from small configuration files to large SOAP payloads and SVG documents. XML (eXtensible Markup Language) remains the backbone of enterprise data interchange: SOAP web services, RSS/Atom feeds, SVG vector graphics, Microsoft Office documents (DOCX, XLSX, PPTX are ZIP-compressed XML), Android layouts, Maven POM files, and countless configuration formats (web.config, pom.xml, AndroidManifest.xml). When XML becomes minified or poorly indented — common after machine generation, XSLT transformation, or compression — readability plummets and debugging becomes painful.
  2. Click Format to beautify your XML with consistent, hierarchical indentation. The tool uses the browser's built-in DOMParser to parse your XML into a DOM tree, then serializes it back with proper nesting — each child element indented one level deeper than its parent. Use the Indent selector (2, 4, or tab spaces) to match your project's coding style. The formatter properly handles: multi-line attributes (aligned for readability), self-closing tags (<br/>), CDATA sections (preserved verbatim), XML namespaces and prefixes (xmlns:xsl), processing instructions (<?xml-stylesheet?>), and deeply nested element hierarchies common in configuration files.
  3. Toggle to Minify mode to compress your XML to a single line by removing all non-essential whitespace between tags — useful for reducing file size in production deployments or when embedding XML in other formats. The tool displays the line count so you can see the formatting improvement. If the XML is malformed (mismatched tags, unclosed elements, invalid attribute syntax), the tool shows a clear error message explaining what went wrong. Copy the formatted output for use in your IDE, documentation, or version control diffs. All formatting happens entirely in your browser — your XML data, potentially containing proprietary business logic or configuration secrets, never leaves your device.

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