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XML Formatter

Format and prettify XML data. Beautify XML with proper indentation online.

How to Use XML Formatter

1

Paste your XML

Copy your XML data from any source — API response, config file, or document — and paste it into the editor.

2

Choose formatting options

Select your preferred indentation style (spaces or tabs) and size. Enable or disable syntax highlighting as needed.

3

Format or minify

Click Format to beautify with proper indentation, or Minify to compress by removing all whitespace. The output updates instantly.

4

Copy the result

Use the one-click copy button to copy the formatted or minified XML to your clipboard, ready to use in your project.

About XML Formatter

XML formatter online — format, beautify, and validate XML documents instantly in your browser. This free XML formatting tool applies proper indentation, syntax highlighting, and structure validation to make even the most complex XML files readable. Ideal for developers working with SOAP APIs, configuration files, RSS feeds, and data interchange formats. All processing runs client-side so your data never leaves your device.

Key Features

  • Format and beautify XML with customizable indentation levels
  • Real-time syntax highlighting for easy readability and debugging
  • Validate XML well-formedness and display precise error locations
  • Minify XML to reduce file size for production environments
  • Collapse and expand XML nodes for navigating large documents
  • One-click copy of formatted or minified XML output

Frequently Asked Questions

How to format XML online for free?▾
Paste your XML into the editor and click Format. The tool instantly applies proper indentation and syntax highlighting to make your XML readable. No signup or download required.
How to beautify minified XML?▾
Paste your minified XML and the formatter will automatically add proper line breaks, indentation, and structure. You can customize the indent size (2 or 4 spaces, or tabs).
How to validate XML syntax?▾
The formatter checks for well-formedness as it formats, reporting errors like unclosed tags, improper nesting, and invalid characters with exact line numbers.
How to minify XML to reduce file size?▾
Use the Minify option to strip all unnecessary whitespace, line breaks, and comments from your XML. This can reduce file size by 20-50% depending on the original formatting.
How to format large XML files in the browser?▾
The formatter handles large XML files efficiently using streaming parsing. For files over 10MB, performance depends on your browser and device memory.
How to format XML for SOAP API responses?▾
Paste the raw SOAP XML response and the formatter will properly indent the SOAP envelope, header, body, and nested elements for easy debugging.
How to convert XML indentation from tabs to spaces?▾
Select your preferred indentation style (tabs or spaces) and indent size before formatting. The tool will apply consistent indentation throughout the document.