FAHAQ

JSON Compare

Find added, removed and changed keys between two JSON objects.

JSON A
JSON B

Free online JSON compare tool. Paste two JSON objects to see exactly which keys were added, removed or changed, with dot-path locations. Runs in your browser — nothing uploaded.

How to use the JSON Compare

  1. 01Paste the first JSON object on the left and the second on the right.
  2. 02Click Compare to see a keyed list of added, removed and changed values.
  3. 03Each difference shows its dot-path and old and new values.

Frequently asked questions

Does it compare nested objects?

Yes. The comparison walks nested objects recursively and reports each difference with its full dot-path (e.g. user.address.city).

Is my data uploaded?

No — the comparison runs entirely in your browser.