XML Formatter

What is XML Formatter?

An XML formatter beautifies raw or minified XML documents by adding consistent indentation, line breaks, and hierarchical spacing between elements. XML (eXtensible Markup Language) remains foundational in enterprise systems, SOAP web services, RSS and Atom feeds, SVG graphics, Android layouts, and configuration files for Maven, Spring, and Jenkins.

Unlike JSON, XML uses explicit opening and closing tags that nest arbitrarily deep. Without formatting, a single-line XML document from a SOAP response or config export is nearly impossible to read. A formatter reveals the document tree through visual indentation, making parent-child relationships immediately apparent.

Our XML formatter validates basic well-formedness during the formatting process. Malformed XML — unclosed tags, mismatched elements, invalid characters — produces clear error messages before any beautification attempt. This catches problems early in CI/CD pipelines and manual editing workflows.

Processing runs entirely in your browser. Proprietary SOAP envelopes, internal configuration files, and customer data exports never upload to external servers. For teams handling sensitive enterprise XML, local formatting eliminates data residency and compliance concerns.

XML often coexists with JSON in modern architectures. After formatting XML, compare structures with JSON Formatter output when migrating between formats, or use the YAML Formatter for Kubernetes and DevOps configs that share similar indentation-based hierarchies.

When should you use XML Formatter?

Debug SOAP API responses from legacy enterprise systems that still communicate via XML envelopes. Formatting reveals the Body, Header, and nested operation elements that carry the actual business payload.

Edit Maven pom.xml, Spring applicationContext.xml, or Jenkins pipeline configs with confidence. Proper indentation prevents subtle nesting errors that cause build failures or misconfigured beans.

Review RSS and Atom feed XML before publishing or validating against feed specifications. Formatted feeds are easier to audit for correct channel elements, item dates, and enclosure URLs.

Inspect SVG files exported from design tools. Formatted SVG reveals path data, transform attributes, and layer groupings that are invisible in minified single-line output.

How to Use XML Formatter

1. Paste XML into the editor.
2. Click Format to beautify with indentation.
3. Use Minify to compress XML to a single line.
4. Copy or download the formatted output.

Features

• Beautify XML with consistent hierarchical indentation
• Minify XML by removing unnecessary whitespace between tags
• Syntax-aware formatting that respects element nesting
• Upload .xml files via drag-and-drop for quick processing
• Copy formatted output or download as a .xml file
• 100% client-side processing — documents stay on your device
• Basic well-formedness validation during formatting
• Handles namespaces, attributes, and CDATA sections correctly

Example

The minified input compresses a book catalog entry into a single line. Formatting expands each element onto its own line with two-space indentation reflecting the hierarchy: catalog contains book, which contains author, title, and price. Attributes like id remain on the opening tag. This layout makes it easy to verify element names, attribute values, and text content during code review or debugging.

<catalog><book id="bk101"><author>Gambardella</author><title>XML Developer Guide</title><price>44.95</price></book></catalog>

<catalog>
  <book id="bk101">
    <author>Gambardella</author>
    <title>XML Developer Guide</title>
    <price>44.95</price>
  </book>
</catalog>

Common Errors

Best Practices

• Validate well-formedness before deploying XML configs to production systems
• Use consistent two-space indentation across your team's XML files
• Format locally when documents contain credentials or internal system details
• Keep formatted copies in version control for readable diffs during code review
• Escape user-generated content before embedding in XML to prevent injection
• Compare formatted XML against XSD schemas when available for structural validation
• Minify XML only for wire transfer; keep formatted copies for maintenance
• Document namespace conventions for shared enterprise XML schemas

Related Guides

• Format XML Online

Frequently Asked Questions