JSON Diff

Deep-compare two JSON objects. See added, removed, and changed keys.

Left (original)

Right (modified)

■ Added■ Removed■ Changed■ Equal

Enter valid JSON in both boxes to compare

About this tool

Compare two JSON objects side by side and highlight every difference - added keys, removed keys, and changed values - in a clean, colour-coded view. Paste your two JSON blobs and see the delta instantly, with no data sent to a server. Useful for comparing API responses, config file versions, and database snapshots.

How to Compare Two JSON Objects

1Paste the original JSON into the left panel.
2Paste the modified JSON into the right panel.
3Differences are highlighted instantly: green = added, red = removed, yellow = changed.
4Review the summary showing counts of additions, deletions, and modifications.

Frequently Asked Questions

What does the JSON diff tool highlight?+

Added properties are shown in green, removed properties in red, and changed values show the old and new values side by side.

Does the order of keys matter?+

No. JSON object key order is semantically insignificant. The tool compares values by key name regardless of the order they appear.

Can I diff nested JSON objects?+

Yes. The tool recursively compares nested objects and arrays, highlighting differences at every level of nesting.

What if my JSON is invalid?+

The tool validates both inputs before comparing. If either side is invalid JSON, an error is shown with the approximate location of the problem.

Looking for a deeper guide on this topic? Browse the Searchlight blog.

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