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XML Formatter

Format, prettify, or minify XML with configurable indentation. Includes validation, statistics (elements, attributes, text nodes, comments), and sample documents. Runs entirely in your browser — your data never leaves your machine.

xml formatter prettify minify validator

Published May 28, 2026

All interactive tools run entirely in your browser. Your data never leaves your device.

How It Works

Paste or type XML into the input area. Choose between Format (prettify with indentation) or Minify (remove all unnecessary whitespace). The tool parses the XML structure and regenerates it with your chosen formatting.

Features

  • Format mode: prettify XML with configurable indentation (2 spaces, 4 spaces, or tab)
  • Minify mode: strip all unnecessary whitespace and comments for compact output
  • Validation: real-time well-formedness check (mismatched tags, unclosed elements)
  • Inline collapse: optionally keep <tag>text</tag> on a single line
  • Statistics: counts elements, attributes, text nodes, comments, and processing instructions
  • 5 sample documents: simple, HTML fragment, SVG, RSS feed, config file
  • Private: runs entirely in the browser — no data transmitted

Use Cases

  • Prettifying minified XML for readability
  • Minifying XML for production/transmission
  • Quick validation of XML well-formedness
  • Inspecting XML document structure and statistics