Does the order of keys count as a difference?

No. Objects are compared key by key, so the same data written in a different order comes out identical. Types are strict, though: the number 1 and the string "1" are reported as a change, and so are null and a missing key, null means the key exists with an empty value, while a missing key is reported as removed.

It listed 400 differences and stopped. Where are the rest?

The table draws the first 400 rows to stay usable. Download the report and you get the complete list.

JSON Diff

No upload · runs in your browser

Original (A)

0 characters

Changed (B)

0 characters

Added

Removed

Changed

Total differences

Verdict

Waiting

Differences

Paste valid JSON into both panes to see the differences.

Both documents are parsed and compared in your browser, neither is uploaded.

How it works

JSON Diff : Compare Two Documents Path by Path

Paste two JSON documents and get every added, removed or changed path listed with both values. Key order is ignored; arrays are matched by index.

What this does

Added, removed and changed paths listed separately, each with its own count
Paths written as $.items[2].price, so you can search for one in the payload itself
Key order and whitespace ignored, so only a real change is reported
A changed row shows the old value and the new one together
Filter to one kind of change, then copy the report or download it as a text file

FAQ

Strictly by index: item 0 against item 0, item 1 against item 1, and any extra entries on either side reported as added or removed. That means inserting one element near the front of a long array makes every later index look changed. If your arrays are unordered collections, sort both sides by a stable key before comparing.

Keep going