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 built for developers who need to check XML differences.
Color-coded highlights for every difference: green for additions, red for deletions, yellow for modifications. Full element-path reporting for nested 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 'Compare' to instantly parse both inputs, normalize structure, and produce a semantic diff with all differences highlighted.
View color-coded diff results with additions, deletions, and modifications highlighted inline. Navigate each difference 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 inputs are parsed into hierarchical trees using fast-xml-parser. Elements and attributes are organized into a normalized representation — so whitespace differences never create false positives.
The algorithm traverses both trees recursively, comparing elements at each level. It detects added or deleted elements, attribute changes, and text 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 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. Use this XML checker for these common scenarios.
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 differences between configuration file versions — pom.xml, web.xml, Spring configs, Android manifests, or any structured XML config. Use this XML diff checker to stay in control.
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. Spot every difference in documentation revisions.
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.