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JSON Diff — free online JSON tool

About JSON Diff
Compare two JSON documents and spot every difference. Paste an original and a modified version to see added, removed, and changed values highlighted — in side-by-side, unified, or semantic mode, with the option to ignore key order so reordered objects do not show as false differences.
Frequently asked questions

How do I compare two JSON files?

Paste the original JSON in the left panel and the modified JSON in the right; the diff updates automatically and highlights every added, removed, and changed value.

What are the split, unified, and semantic modes?

Split shows both documents side by side; unified is a single git-style diff with + and - markers; semantic lists exactly which fields changed, ignoring formatting.

Can it ignore the order of object keys?

Yes — enable "Ignore key order" so reordered keys are treated as equal and not reported as differences.