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XML Formatter

Developer Tools

Beautify/minify + tag validation

Quick Answer

XML Formatter: Beautify/minify + tag validation. XML Formatter uses standard developer formulas to compute accurate results instantly.

5 elements

Formatted output

<note priority="high">
  <to>Alice</to>
  <from>Bob</from>
  <body>
    Meet at
    <time>10:00</time>
    tomorrow
  </body>
</note>

Processing steps

  1. 1Parsed 5 element(s), max nesting checked, all tags closed
  2. 2Formatted with 2-space indent: 9 lines; minified: 105 chars (1.9% smaller)
This is a lightweight formatter: it tokenizes tags, comments, declarations and text, re-indents by nesting depth, and verifies that every open tag is properly closed (reporting the first mismatch). It does not validate against DTD/XSD schemas. Inline text elements like <a>text</a> are kept on one line for readability.

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How to Use

  1. Paste or type content: drop code/text into the XML Formatter or fill the parameters.
  2. Choose mode/options: switch format, rules or processing as needed.
  3. Live output: results appear instantly — nothing is submitted, data stays in your browser.
  4. One-click copy: copy the output straight into your development environment.

Key Points

  • XML Formatter is a free online developer tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: Beautify/minify + tag validation.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

XML Formatter formula

XML Formatter uses standard developer formulas to compute accurate results instantly.

FAQ

How do I use the XML Formatter?
Open the page and fill in the input fields — results update automatically. Beautify/minify + tag validation.
Are the results accurate?
Yes. Standard formulas and conversion factors are used and verified.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on phones, tablets and desktops.
Is my data saved?
No. Everything runs locally in your browser.

Related Tools

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Source & Updates

Based on RFC 4648, ECMA-262 and related specifications. Last updated: 2025-07

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. XML Formatter[EB/OL]. https://www.yijiansuan.com/en/c/dev/xml-format

Results provided by this tool are for reference only and do not constitute professional advice.