Local developer utility

JSON Diff Comparator

Compare two JSON or JSON5 documents and see structural changes clearly. Your input stays in your browser while you work.

Relaxed JSON5-style syntax is accepted, including unquoted keys such as {a:1,"b":"c"}, trailing commas, and comments.

JSON Diff🔒 Processed locally

How to use JSON Diff

Paste the first document in the left editor and the second in the right editor, then compare. Added content is highlighted green and removed content red.

Processing runs locally in this browser. No input is uploaded or sent to a conversion service.

Inputs

Original JSON
Updated JSON

Related tools

JSON Stringify — Encode JSON as a quoted JSON string.
String to JSON — Decode a JSON string containing a JSON document.
JSON Sort Keys — Sort object keys recursively while preserving array order.
JSON Flatten — Flatten JSON into unambiguous JSON Pointer paths.