XML Formatter

Format XML with customizable indentation, minify XML to reduce size, and validate XML structure. Detects mismatched and unclosed tags instantly.

Format, validate, and minify XML data. Beautify XML with customizable indentation or compress it by removing whitespace and comments.

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Validates XML tag structure (mismatched/unclosed tags). Format adds proper indentation; minify removes whitespace and comments. All processing happens locally in your browser.

How to Use This Tool

  1. 1

    Paste your XML

    Enter XML data in the input area. Click 'Load Sample' to try with an example bookstore XML.

  2. 2

    Choose indent size

    Select your preferred indentation: 2, 3, or 4 spaces for formatted output.

  3. 3

    Format or Minify

    Click 'Format XML' to beautify with proper indentation, or 'Minify XML' to compress by removing whitespace and comments.

  4. 4

    Check and copy

    Review the validation status (green check for valid XML), then copy the formatted or minified output.

Frequently Asked Questions

Does this tool validate XML?
Yes. It checks for mismatched and unclosed tags. A green checkmark indicates valid structure; errors show which tag is problematic.
What does minify do?
Minify removes all unnecessary whitespace, line breaks, and XML comments to reduce file size, making it ideal for production use.
Does it support XML namespaces?
Yes. The formatter handles namespaced tags (e.g., <ns:element>) and preserves namespace declarations in attributes.
Is my data sent to a server?
No. All formatting, minification, and validation happen entirely in your browser. Your XML never leaves your device.