Xml Formatter

Free online tool. All processing is client-side. No signup needed.

How to Use the Xml Formatter

1. Enter your input values above
2. Results update automatically
3. Copy or download the output

What is a Xml Formatter?

An XML Formatter beautifies, validates, and structures XML (eXtensible Markup Language) data into a readable, indented format. XML remains widely used in enterprise systems — SOAP web services, configuration files (Maven, Android, .NET), office documents (OOXML: .docx, .xlsx, .pptx), RSS/Atom feeds, sitemaps, and data interchange in regulated industries (finance, healthcare, government). However, XML's verbosity makes unformatted XML nearly unreadable. This tool transforms compact XML into a clean, collapsible tree view.

How Does It Work?

Paste raw XML. The parser validates it against XML syntax rules: single root element, properly closed tags, case-sensitive matching, quoted attributes, proper nesting. If valid, the formatter applies consistent indentation (2 or 4 spaces, adjustable), sorts attributes (optional), and renders as a syntax-highlighted, collapsible tree. If invalid, the exact error (line, column, description) is displayed. The formatted output can be copied, downloaded as .xml, or converted to JSON.

Formula

XML Structure:\n<?xml version=\

Who Uses This Tool?

• Enterprise developers working with SOAP APIs and XML-based services
• Software engineers reading and debugging Maven/Gradle/Android configs
• SEO specialists generating and validating XML sitemaps
• Data analysts exploring XML data exports from legacy systems
• Anyone who's received raw XML and needs to understand its structure

Pro Tips

• XML is case-sensitive: <Name> and <name> are different elements. This is a common source of bugs when converting between JSON (which is also case-sensitive) and XML
• For large XML files (>5MB), use the 'raw format' mode which formats without the interactive tree to avoid browser performance issues

Frequently Asked Questions about Xml Formatter

Is XML still relevant in 2026?

Yes, in specific domains. JSON dominates new APIs (REST, GraphQL), but XML remains entrenched in: enterprise SOAP services, document formats (.docx, .xlsx), financial data exchange (FpML, FIXML), healthcare (HL7, CDA), government data, RSS feeds, and Android app development.

What's the difference between XML and HTML?

HTML is a specific XML-based vocabulary with predefined tags and forgiving parsing (browsers auto-correct errors). XML is a general-purpose markup language with strict parsing (one error = entire document fails to parse). HTML5 is actually not XML — it's a separate standard with its own parsing rules.

Free online Xml Formatter — no signup, 100% client-side processing. All data stays in your browser.