JSON Difference Checker

Find what changed between two API responses or configuration files. Whitespace and object-key order are ignored.

Original JSONChanged JSON

3Total differences

changed$.plan

Before"starter"

After"growth"

changed$.users

Before3

After5

added$.features[1]

After"exports"

Reading a JSON difference

Comparing an API response before and after a release? Keep the earlier response in Original JSON. Each result identifies a JSON path and shows what was added, removed or changed, even when the properties have moved around.

Original response · example

{ "plan": "starter", "users": 3 }

Changed response

{ "users": 5, "plan": "growth", "trial": false }

The example produces three differences, not a change for reordered keys
Path	Difference	Result
`$.plan`	Changed	`"starter" → "growth"`
`$.users`	Changed	`3 → 5`
`$.trial`	Added	`false`

Array order still counts — entries are compared by position, not matched by an ID. Reordering a list can produce several changed values. A number such as 3 also differs from the string "3".

What does “equal” leave unchecked?

It means the parsed values match, ignoring whitespace and object-key order. It does not validate a schema or business rules. JavaScript number precision applies, and duplicate object keys are collapsed during parsing. Compare smaller sections when reviewing very large documents.

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