Why should I format my XML?

Formatting XML with proper indentation makes it easier to read, debug, and maintain. Well-formatted XML helps developers quickly understand the document structure and identify nesting errors.

How does XML formatting work?

The tool parses your XML using the browser's built-in DOMParser, then serializes it back with proper indentation. Each nested element gets additional indentation, making the hierarchical structure visually clear.

Is my XML data sent to a server?

No. The XML formatting happens entirely in your browser using native DOMParser and XMLSerializer APIs. Your data never leaves your computer.

Free Developer Tool — 100% Client-Side

XML Formatter Online

Beautify, validate, and format your XML data instantly. Your data stays in your browser — nothing is uploaded, nothing is stored.

XML Input

Formatted Output

What Is XML Formatting?

XML formatting (also called XML beautification or XML pretty-print) is the process of restructuring raw XML data with proper indentation, line breaks, and spacing to make the document structure human-readable. A formatted XML document uses consistent indentation to show each element's nesting level, making it dramatically easier to spot errors, understand relationships, and edit the data. Our free XML formatter online runs entirely in your browser for instant, private formatting.

XML vs JSON vs YAML

XML

Best for documents with mixed content (text + elements), complex schemas (XSD), and enterprise systems like SOAP web services and configuration files. Supports attributes, namespaces, and comments out of the box.

JSON

Best for REST APIs, web applications, and lightweight data exchange. JSON has a simpler syntax and is natively supported in JavaScript, making it faster to parse in browser environments.

YAML

Best for configuration files (Docker Compose, CI/CD pipelines, Ansible) where human readability is the top priority. YAML uses indentation-based structure and supports comments and multi-line strings.

Common XML Use Cases

Configuration Files — Application configs in XML (e.g., Maven POM, Ant build files, web.xml).
Web Services (SOAP) — SOAP APIs exchange structured XML messages between systems.
Data Exchange — XML is widely used in B2B integrations, RSS/Atom feeds, and OpenStreetMap data.
Document Storage — Office documents (DOCX, XLSX) and SVG graphics are XML-based under the hood.

How to Use This XML Formatter

To format XML data, paste your raw XML string into the input textarea and click Format XML. The tool will parse the document and output a beautifully indented version. Each nesting level adds two spaces of indentation so the element hierarchy is clearly visible. If the XML contains syntax errors, an error message explains what went wrong. Use the Copy button to copy the formatted result to your clipboard.