JSON Diff
Compare two JSON documents and see exactly what changed — added, removed and modified.
Quick answer: Compare two JSON documents and see exactly what changed — added, removed and modified.
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Frequently asked questions
- How does it handle key ordering?
- Keys are compared by name, not position — two objects with the same keys in different orders are equal.
- What about array order?
- Arrays are compared positionally — the diff treats them as ordered. If you want set semantics, sort both arrays first.
- Will huge JSON documents be slow?
- The diff is O(n) over the smaller of the two trees, so multi-megabyte documents finish in well under a second.
- Are my JSON files uploaded?
- No — comparison runs entirely in your browser. Even confidential JSON is safe to paste here.
- Can I export the diff?
- Yes — copy the diff lines or download as JSON for use in a code review or change report.