What makes XML different from HTML?

XML (eXtensible Markup Language) requires all tags to be properly closed and nested, attribute values to be quoted, and is case-sensitive. Unlike HTML, XML has no predefined tags — you define your own.

Why does my XML show an error?

Common XML errors include unclosed tags, mismatched tag names, missing quotes around attribute values, multiple root elements, or illegal characters like unescaped ampersands (& instead of &).

Yes. All formatting and validation runs locally in your browser using JavaScript. Your XML is never uploaded to any server.

Can I format very large XML files?

This tool handles typical XML files well. For very large files (several MB), processing may take a moment. For gigabyte-scale files, a dedicated desktop tool may be more appropriate.

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XML Formatter

Format, validate, and minify XML with syntax highlighting.

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이 도구에 대해

A fast, browser-based XML formatter that instantly prettifies messy XML with configurable indentation, validates your markup and reports any errors with line numbers, and minifies XML by stripping unnecessary whitespace. Syntax highlighting with color-coded elements, attributes, and values makes large documents easy to read. No data is ever sent to a server — all processing happens entirely in your browser.

사용 방법

1 Paste your XML into the input textarea.
2 Select indent size: 2 spaces, 4 spaces, or a tab character.
3 Click Format to prettify or Minify to compress.
4 Errors are highlighted with a message showing the problem.
5 Click Copy to copy the formatted output to your clipboard.
6 Click Clear to reset both panels.

이 도구에 대해

사용 방법

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