XML & HTML Formatter
Format, pretty-print, and minify XML or HTML instantly. Choose between 2-space or 4-space indentation, validate document structure, or compress markup for production. All processing runs locally in your browser for maximum privacy and speed.
XML & HTML Formatter
Paste your XML or HTML below to format, minify, or validate it.
How XML Formatting Works
XML (Extensible Markup Language) and HTML use a nested tag structure to represent data and documents. Formatting adds consistent indentation and line breaks at each nesting level, so parent-child relationships between elements are immediately visible.
Minification does the opposite: it strips all whitespace between tags, producing the most compact representation possible. This reduces payload size for network transmission and storage without changing the document structure or content.
Common Use Cases
- Debugging SOAP/XML APIs — Pretty-print XML responses to quickly understand nested data structures and attributes.
- Editing configuration files — Format XML config files (web.xml, pom.xml, .csproj) for readability before making changes.
- Minifying SVG files — Compress inline SVG markup to reduce HTML page size and improve loading performance.
- Reviewing HTML templates — Format HTML snippets to visualize the DOM hierarchy and spot structural issues.
Frequently Asked Questions
What is XML formatting?
XML formatting (or pretty-printing) adds consistent indentation and line breaks to XML or HTML markup, making nested elements visually structured and easier to read and debug.
What does XML minification do?
XML minification removes all unnecessary whitespace between tags, reducing file size for faster network transmission and storage efficiency without altering the document structure.
Is my XML data secure?
Yes. All processing happens entirely in your browser using JavaScript. Your XML and HTML data is never uploaded to any server, ensuring complete privacy.
Can this tool format HTML as well?
Yes. This tool handles both well-formed XML and HTML markup. It parses the input and applies consistent indentation to nested tags, self-closing elements, and attributes.