A semantic XML diff tool that understands hierarchical structure — not just text. Detect element changes, attribute modifications, and missing nodes with full path context.
A client-side XML comparison tool that parses structure semantically — not just text. Fast, private, and free for developers working with XML data.
Color-coded highlights for every difference: green for additions, red for deletions, yellow for modifications. Full element-path reporting for nested XML structures.
Efficient recursive algorithms compare XML documents with thousands of elements in under a second. No server round-trip, no loading spinners.
All XML parsing and diffing happens in your browser using JavaScript. Your data never leaves your device — zero server uploads, zero logging.
Start comparing XML documents in three simple steps — no installation or signup needed.
Enter or paste two XML documents into the left (Base) and right (Contrast) editor panels. You can also drag-and-drop files or import from a URL.
Click the 'Compare' button. The tool instantly parses both inputs, normalizes structure, and produces a semantic diff.
View color-coded diff results with additions, deletions, and modifications highlighted inline. Navigate differences by category in the sidebar.
Unlike text-based diff tools, our XML comparator understands document structure. It parses, normalizes, and recursively compares — so formatting changes and attribute reordering never produce false diffs.
Both XML inputs are parsed into hierarchical tree structures using fast-xml-parser. Elements and attributes are organized into a normalized object representation — so whitespace differences never create false positives.
The algorithm traverses both XML trees recursively, comparing elements at each level. It detects added/deleted elements, attribute changes, and text content modifications at every nesting level.
Repeated child elements can be matched using three strategies: By Index (positional), LCS (Longest Common Subsequence for intelligent insertion/deletion detection), and Unordered (set-like comparison ignoring element order).
Each difference is mapped to its source position in the XML and rendered with color-coded highlights — green for additions, red for deletions, yellow for modifications — with full element path context.
XML comparison is essential across many development and data workflows.
Compare XML request/response payloads for SOAP web services, REST APIs with XML responses, or WSDL definitions. Verify endpoint behavior during development, QA, and automated CI/CD pipelines.
Track changes between XML configuration file versions — pom.xml, web.xml, Spring configs, Android manifests, or any structured XML config.
Validate XML data transformations, compare XSLT outputs, or verify data migration results between XML-based systems and databases.
Compare structured documents in XML-based formats like DocBook, DITA, or SVG files where element structure matters.
Load XML data into the comparison result page by passing URL query parameters. Useful for sharing diff results, CI/CD integration, or linking from documentation.
Pass publicly accessible URLs to the base and contrast parameters. The tool will fetch and compare the XML content from these URLs automatically.
Encode your XML content as a Base64 string and pass it directly in the URL. Use base-64.com to encode/decode your data.