JSON Compare

Compare two JSON documents and find all differences. See exactly what was added, removed, or changed — with full JSON paths. Also: JSON Formatter | JSON ↔ String | JSON ↔ CSV/TSV | All JSON Tools | JSON Viewer / Editor | JSONPath Evaluator | JSON Schema Validator | JSON → SQL / TOML.
All processing happens locally in your browser — your data is never uploaded to any server.
Paste two JSON documents below and click Compare to find differences.
JSON A (Original)
JSON B (Modified)
Differences
Enter two JSON documents above and click Compare to see the differences.
How to use: Paste your original JSON in the left textarea (JSON A) and the modified version in the right textarea (JSON B). Click Compare to see all differences.
Result colors: Green = added in B, Red = removed from A, Yellow = value changed.
Set compare: When checked, arrays are compared as unordered sets (item order is ignored). By default, arrays are compared position-by-position.
Tip: The comparison is recursive — nested objects and arrays are fully traversed to find all differences at every level.
Structural diff — key order does not matter

JSON objects are unordered by definition, so a structural comparison reads both documents as trees and reports value differences by path — {"a":1,"b":2} and {"b":2,"a":1} are equal. Text-based diff tools would flag such files as fully changed. Arrays are ordered: compare position-by-position by default, or as unordered sets when item order is irrelevant.

Every difference is reported with its full JSON path, e.g. .items[0].price.