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XML Formatter & Beautifier

Free online XML formatter and validator. Beautify your XML code with a real-time tree structure viewer and instant error detection.

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Input
1
Lines: 1Chars: 0Size: 0 B

Configurations

Formatting Modes
Export / Presets
Output

Tree Viewer Ready

Your formatted XML structure will appear here as an interactive collapsible tag tree.

The Ultimate Online XML Formatter and Viewer

Working with markup data can be complex and challenging to read. Our free online XML Formatter and Viewer is meticulously engineered to streamline your coding workflow. Easily beautify, compress, validate, and navigate raw XML strings in real-time. Whether you are debugging configuration files, parsing complex web services feeds, or inspecting SOAP payloads, our tool runs entirely client-side for maximum performance and security.

Why Choose Our Free XML Tool?

  • Premium Beautifier: Re-indent messy, unformatted XML into clean, nested structures. Customize tag indentation size (2, 3, or 4 spaces, or tab characters) based on your team's style guides.
  • Accurate DOM Parser Validation: Instantly check XML syntactical correctness. The parser highlights mismatched close tags, unclosed element structures, or invalid attributes, reporting exact error line numbers.
  • One-Click Minification: Instantly compress XML payloads by removing unnecessary whitespaces, line feeds, and empty indentations, optimizing XML transfer times in web applications.
  • Hierarchical Tree Inspector: Interact with a collapsible, color-coded virtual tag tree. Explore nodes, collapse deep levels, view attribute-value maps, and search tags or attribute text values dynamically.
  • 100% Privacy & Offline Speed: Since all computation occurs directly inside your browser window, your files and text payloads are never transmitted to any external servers, ensuring strict confidentiality.

Advanced Formatting Options

This utility is designed with developer convenience in mind. You can upload local .xml files directly or provide remote HTTP URL feeds to import payloads. Easily copy formatted outputs to your clipboard, download files, or convert simple structured XML data into robust JSON format with a single button. Maximized full-screen toggles are available on both editor frames so you can focus on reading massive data models comfortably.

What is XML?

XML (eXtensible Markup Language) is a highly flexible markup language used to store and transport structured data. Unlike HTML, which defines preset layout elements, XML allows developers to define custom semantic tags to encapsulate complex datasets. It is extensively utilized in system configurations, android resource models, SVG illustrations, RSS feeds, and legacy enterprise communication protocols. Ensuring strict syntactic validation is vital to prevent parsing errors and server failures.

Frequently Asked Questions (FAQ)

An XML formatter is a markup utility designed to organize, validate, and beautify raw XML structures into neatly indented elements with customizable spacing.
No, Fuhut does not transfer or process your XML documents on external servers; all formatting, validation, and tree building are executed locally in your browser.
XML validation is handled by loading the markup into a client-side browser DOMParser instance, which identifies invalid syntax, missing closing tags, or mismatched attribute quotes, displaying the precise error locations.
Yes, you can convert XML data into JSON with a single click in the output panel, enabling quick integrations between markup feeds and modern JSON-based API applications.