JSON Diff Checker
Compare two JSON objects and see exactly what changed.
Differences found
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added removed changed
About this tool
Paste two JSON objects to see exactly which keys were added, removed, or changed — a structural comparison rather than a line-by-line text diff, so it doesn't matter if formatting, key order, or indentation differs between the two.
Frequently asked questions
- Does key order matter?
- No — this compares values by key path, not by position, so reordering keys in an object never shows up as a change.
- How are array differences shown?
- Arrays are compared index by index — a value changing at index 2 shows as a change at path
[2]; items added or removed at the end of an array show as additions/removals at their index. - What counts as a "change" vs an "add/remove"?
- If a key exists in both JSON objects but with a different value, it's a change. If a key only exists in the second JSON, it's an addition; if it only exists in the first, it's a removal.