XML Diff Checker — Compare Two XML Files Online
Compare two XML files, feeds, or configs and instantly see every changed tag, attribute, and value. Free, private, and no signup.
Open the XML diff toolXML is verbose, so the one change that matters — a renamed tag, a flipped attribute, a removed element — is usually buried in a large, repetitive file. This tool compares two XML files line by line with syntax highlighting so you can pinpoint exactly what changed in seconds instead of scanning by eye.
Paste or upload the original and updated XML into the two panels and compare. Removed lines appear in red, added lines in green, and word or character precision highlights the exact attribute or value that changed inside a tag. Nothing is stored — files are used only to compute the diff.
Pretty-print both files with the same indentation first so a line diff can isolate the changed element. Attribute order and whitespace between tags are usually insignificant in XML — the guide below explains what to ignore.
How it works
Add both XML files
Paste or upload your two XML files, feeds, or config files into the left and right panels.
Compare
Click Find Differences to run a line-level diff with XML syntax highlighting across both documents.
Review the changes
Use side-by-side or inline view and switch precision to highlight the exact tag, attribute, or value that changed.
Frequently asked questions
Can I compare config files and RSS/product feeds?
Yes. Anything in XML — application configs, RSS or product feeds, SVG, SOAP responses — can be pasted or uploaded and compared with syntax highlighting.
Attributes are flagged but nothing really changed. Why?
XML treats attribute order as insignificant, so reordered attributes show as a text difference even though the data is the same. Formatting both files the same way reduces this noise.
Are my files stored?
No. Files are processed in memory to compute the diff and are not stored or logged afterwards.
Want the full walkthrough?
Read the guide: How to Compare Two XML Files and Find What Changed