Online XML Diff Checker
Paste two XML documents and instantly see every added, removed, and changed line — with full XML syntax highlighting for easy reading.
Open the Tool — Free & InstantYour data never leaves your browser
No server processing
All diffing runs locally in your browser using JavaScript. Zero data transmitted.
No logging or storage
We do not store, log, or read your content. Nothing is saved anywhere.
Safe for sensitive content
Confidential code, config files, API keys — safe to compare here.
PII detection on share
Before any share link is generated, your content is scanned for emails, API keys, and tokens — with options to redact or encrypt.
Features
- ✓XML syntax highlighting for both panes
- ✓Side-by-side and unified diff views
- ✓Line-level and character-level change highlighting
- ✓Works with any XML: config files, SOAP, SVG, RSS, and more
- ✓Ignore whitespace option for formatting-only changes
- ✓Download diff as .patch or HTML file
- ✓Shareable links — send any XML diff via URL
- ✓100% in-browser — XML never sent to a server
Frequently Asked Questions
How do I compare two XML files online?
Paste the original XML in the left panel and the modified XML in the right panel. Select "XML" from the language dropdown in the toolbar to enable syntax highlighting. Changed lines are instantly highlighted.
What is an XML diff checker?
An XML diff checker is a tool that compares two XML documents and highlights every line that was added, removed, or changed between them. It is useful for reviewing configuration changes, debugging API responses, and auditing XML-based data exports.
What types of XML files can I compare?
Any text-based XML format: configuration files, SOAP envelopes, SVG images, RSS/Atom feeds, Maven POMs, Android manifests, Spring beans, web.xml, pom.xml, and more.
How do I find differences between two XML files without installing software?
Paste both XML documents into the panels on this page. No download, sign-up, or installation needed. The comparison runs entirely in your browser and results appear instantly.
How does an XML comparator handle attribute order and whitespace?
By default, attribute order and whitespace changes are visible in the diff. Enable "Ignore whitespace" in the toolbar to hide formatting-only differences and focus on content changes. Attribute order differences will still be shown since they appear as line changes.
How does it handle whitespace and formatting differences?
Enable "Ignore whitespace" in the toolbar to suppress diffs that are purely formatting changes (extra spaces, indentation). This is useful when comparing XML that has been re-formatted.
Is my XML data kept private?
Yes. All diffing runs locally in your browser. Your XML is never uploaded, stored, or accessible to us. Safe to use with internal configs, API payloads, or any sensitive XML.
Can I compare large XML files?
Yes. The text diff view handles large files well. For very large files the diff may take a moment to compute since all processing is in-browser.
Can I share an XML diff with my team?
Yes. Click Share to generate a URL containing the full diff. Paste it into a Slack message, email, or pull request comment. For sensitive XML, use the Encrypt option to password-protect the link before sharing.