How does JSON diff work?

Our tool performs a deep recursive comparison of two JSON objects. It identifies added, removed, and modified values at every level of nesting, showing the exact path of each difference.

What types of differences are shown?

Three types: Added (green, +) for new keys/values, Removed (red, -) for deleted keys/values, and Changed (yellow, ~) for modified values. Each shows the exact path and values.

Can it compare nested objects?

Yes! The comparison is fully recursive, meaning it traverses nested objects and arrays at any depth to find all differences, no matter how deeply nested.

Does it handle arrays?

Yes, arrays are compared element by element. If an array has different lengths or different values at any index, the differences will be highlighted.

Is there a size limit?

There's no hard limit, but very large JSON objects (>1MB) may cause slower performance since all processing happens in your browser.

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JSON Diff

Compare two JSON objects and find differences

Your files never leave your browser

Original JSON

Modified JSON

How It Works

Paste JSON

Paste the original and modified JSON in the two panels

Compare

Differences are calculated automatically in real-time

Review Changes

See color-coded added, removed, and changed values

Frequently Asked Questions

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Last updated: Feb 27, 2026