XML Formatter

美化、压缩和验证XML。
输入
OUTPUT

Beautify & Minify

Format or compress XML with proper indentation.

Validate

DOM-based XML validation with error messages.

Copy Result

One-click copy to clipboard.

Client-side

All processing in your browser. No data uploaded.

关于XML Formatter

The XML Formatter is a free, browser-based tool for beautifying, minifying, and validating XML documents. XML is used everywhere — REST API responses, SOAP web services, configuration files, RSS/Atom feeds, SVG graphics, Android layouts, Maven POM files, and countless data exchange formats. When XML arrives as a compact single-line string or is poorly indented, understanding its structure is time-consuming and error-prone. The beautifier parses the tag hierarchy and adds consistent indentation so that every parent-child relationship is immediately visible. Prolog declarations (<?xml version="1.0"?>), self-closing tags, and XML comments are all handled correctly without disrupting the indent level. The built-in validator uses the browser's native DOMParser to check for well-formedness errors such as unclosed tags, mismatched element names, illegal characters, and missing attribute quotes — displaying the exact error message so you can fix it quickly. The minifier strips all inter-element whitespace to produce the most compact representation. Everything runs in your browser, so your XML data — which may include API keys in attributes, private records, or internal configuration — is never sent anywhere.

如何使用XML Formatter

  1. Paste your XML content into the left input panel.
  2. Select the indentation size (2 or 4 spaces) from the dropdown at the bottom.
  3. Click "Beautify" to format the XML with proper indentation and line breaks.
  4. Click "Validate" to check whether the XML is well-formed — any errors will be displayed in red in the output panel.
  5. Click "Minify" to compress the XML into a single compact line.
  6. Click "Copy" to copy the output to your clipboard.

常见问题

What kind of XML validation does this tool perform?

The tool checks for XML well-formedness using the browser's built-in DOMParser. This catches unclosed tags, mismatched tag names, illegal characters, and malformed attribute syntax. It does not validate against an XSD or DTD schema.

Can I use this for SVG files?

Yes. SVG is a subset of XML, so SVG files can be pasted in, beautified, validated, and minified using the same tool.

Does it handle XML namespaces?

Yes. Namespace declarations (xmlns:prefix="uri") are treated as regular attributes and are preserved correctly during formatting.

Is this safe for sensitive XML data like API responses?

Yes. All processing runs entirely in your browser using client-side JavaScript. Your XML data is never uploaded to any server.

What is the difference between well-formed and valid XML?

Well-formed XML follows the basic syntax rules of XML (correct tag nesting, closed tags, etc.). Valid XML additionally conforms to a specific schema (XSD or DTD). This tool checks well-formedness only.

XML Formatter 完全使用指南与免费在线工具

无需安装、完全免费、纯前端本地运行的高效 XML Formatter 工具

用于快速解决：美化、压缩和验证XML。。无需安装复杂软件，打开网页即可立即使用，极速且安全。

为什么选择 Metoolzy 的 XML Formatter？

  • 秒级即时响应: 极致性能优化，输入即可见结果。
  • 数据绝对安全: 纯浏览器本地计算，数据绝不上传服务器。
  • 完全免费使用: 无需注册登录，无任何隐形消费。

三步快速上手

  1. 打开 Metoolzy XML Formatter 工具页面。
  2. 在输入区粘贴或上传您的数据。
  3. 即时查看处理结果并点击复制或下载。

功能对比表

对比项 Metoolzy XML Formatter 普通在线工具 本地客户端软件
使用成本 永久免费 有次数限制或收费 需购买授权
隐私保护 纯本地内存运行 数据需上传云端 本地运行

适用人群与应用场景

  • 软件开发人员日常调试与数据转换
  • UI/UX 设计师资产处理
  • 运营与办公人员效率提升

常见问题解答 (FAQ)

处理的数据会被记录或保存吗？

绝不会。所有运算均在您的浏览器本地完成，没有任何数据回传。