JSON diff

Compare two JSON payloads locally and inspect structural changes.

Runs locally in your browser. Payloads, schemas, expressions, and generated output stay on your device.

Original JSON

JSON

{
  "name": "json park",
  "stage": "preview",
  "tools": ["format", "view"]
}

Changed JSON

JSON

{
  "name": "json park",
  "stage": "beta",
  "tools": ["format", "view", "diff"]
}

Common uses

Compare before-and-after API responses without reviewing every line by hand.
Spot added, removed, and changed paths while ignoring formatting noise.
Catch structural drift before turning examples into tests or contracts.

Details

Are both diff payloads uploaded?

No. Both sides are parsed and compared locally in your browser.

Does the diff compare object key order?

No. It compares JSON structure and values, so object key order does not create fake differences.

Private by default

The current tool runs in your browser. Payloads, schemas, expressions, and generated output are not sent to jsonpark.com, Supabase, Turnstile, or analytics.