XML Diff Tool - Compare XML Files Online

Compare two XML files and see structural differences with syntax highlighting. Detects added, removed, and changed elements. Browser-based, completely private.

How to use: Paste or upload two XML documents to compare. The tool will highlight structural differences, showing added (green), removed (red), changed (yellow), and modified attributes (blue).

Drop original XML here or click

Original XML

Drop modified XML here or click

Modified XML

Ignore whitespace

Ignore comments

XML Validator - Check XML Syntax Online …

XML Well-Formedness Checker - Syntax Val…

View all Xml validators →

Frequently Asked Questions

XML diff compares two XML documents to identify structural differences. It's essential for version control, configuration management, API testing, and debugging changes between XML files. Unlike plain text diff, it understands XML structure and ignores formatting differences.

This tool parses XML structure and compares elements semantically, ignoring whitespace and formatting differences. It highlights added, removed, and changed elements at the XML node level, making it easier to understand structural changes versus raw text comparison.

The tool detects added elements (present in second XML only), removed elements (present in first XML only), changed elements (different content or attributes), and modified attributes. It provides color-coded highlighting for each type of change.

Yes, the tool properly handles XML namespaces and compares attributes. It detects attribute additions, removals, and value changes. Namespaces are preserved and compared as part of the element structure.

Yes, the tool handles large XML files entirely in your browser. Performance depends on file size and complexity, but typical configuration files and API responses process instantly. Very large files (>10MB) may take a few seconds.

The tool validates both XML inputs before comparison. If either file has syntax errors, it displays specific error messages with line numbers and descriptions, helping you identify and fix parsing issues before comparison.

Differences are shown with color-coded syntax highlighting: green for added elements, red for removed elements, yellow for changed content, and blue for modified attributes. The output shows the complete structure with changes highlighted inline.

Yes, you can copy the diff output to your clipboard with one click or download it as a text file. The output includes clear markers for all detected changes, making it easy to share or document differences.

Yes, once loaded, the tool runs entirely in your browser with no server communication. All parsing and comparison happens client-side, ensuring complete privacy and offline functionality.

Common uses include comparing configuration files before deployment, validating API response changes, reviewing XML transformations, debugging XSLT outputs, comparing SOAP messages, tracking changes in XML-based settings, and version control for XML documents.

Original XML

Modified XML

Related Tools