First Difference in XML Text
XML syntax checking Optional whitespace normalization First-difference snippet. feutexNormalizeXML collapses nonblank text whitespace and firstDiffIndex only returns first character difference; needs semantic/XML-space safety and full change report.
Scope of this tool: feutexNormalizeXML collapses nonblank text whitespace and firstDiffIndex only returns first character difference; needs semantic/XML-space safety and full change report.
How to use
How to use:
- Paste the first XML document into the left input.
- Paste the second XML document into the right input.
- Click Compare.
- If either XML is invalid, you’ll see an error message.
- Review the result summary and the first detected difference (if any).
FAQ
How does this tool compare XML?
It parses both documents in your browser, normalizes them (optionally removing insignificant whitespace), then compares the normalized results and shows the first detected difference.
Is this XML diff tool free to use?
Yes—it's free to use.
Do you upload or store my XML?
No. The comparison runs locally in your browser; your XML is not uploaded.
What if I paste invalid XML?
The tool will detect parsing errors and show an error message instead of a comparison result.
Can it handle large XML files?
It can handle many typical XML documents, but very large files may be slow depending on your device and browser.
Does it work on mobile?
Yes, it runs in modern mobile browsers, though large inputs may be harder to edit on small screens.
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