About XML File Compare
Compare XML documents, Maven pom.xml files, and SOAP responses side by side. Catches tag renames, attribute edits, and namespace changes with full XML syntax highlighting in both panes.
Frequently Asked Questions
What is an XML diff tool?
An XML diff tool compares two XML documents and highlights every difference — added elements in green, removed elements in red, and changed attribute or text values inline. It is essential for auditing changes in XML configuration, SOAP responses, and data feeds.
Does an XML diff ignore attribute order and whitespace differences?
Yes. The diff parses both XML documents and compares the element tree semantically. Attribute order within an element is irrelevant in XML, so reordered attributes do not appear as changes. Insignificant whitespace (between elements) is also ignored. Only meaningful changes — element names, attribute values, text content — are shown.
How do I compare two XML API responses to find schema changes?
Paste the first response into the left panel and the second into the right. Attribute value changes appear in-line; added or removed elements are shown in green/red. This is useful for reviewing WSDL changes, config file migrations, or comparing SVG exports from two versions of a design tool.
Can the XML diff tool handle large XML files with thousands of elements?
The tool handles files up to a few megabytes well. For very large XML files (tens of thousands of deeply nested elements), the diff may slow down due to the cost of building and comparing two full DOM trees in the browser. Consider stripping non-essential sections before comparing, or using xmldiff on the command line for large files.
Is my XML code sent to a server when using this online diff tool?
No. Parsing and comparison run entirely in your browser. No XML is transmitted to any server. This is safe for SOAP payloads, proprietary XML schemas, internal API responses, and any XML that may contain sensitive business data.
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