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Developer tool

JSON Compare - Online JSON Diff Tool

See field-level differences between two JSON outputs.

JSON AOld or expected data
JSON BNew or actual data
DifferencesNot compared yet.

Quick guide

How JSON Compare helps

Small differences between API versions, integration responses or config files can be hard to spot manually. JSON Compare checks two values field by field.

How to use it

  1. Paste the old JSON into the left area.
  2. Paste the new JSON into the right area.
  3. Click compare to see added, removed and changed fields.

Common uses

  • Reviewing API response differences
  • Checking configuration changes
  • Comparing expected and actual test data

FAQ

Does key order matter?

Object key order does not matter in field-based comparison.

Is data sent to the server?

No. Comparison runs in the browser.