JSON Compare Tool

Compare two JSON files or JSON strings instantly. Validate both sides, detect structural differences, inspect changed key paths, and review side-by-side formatted JSON output for debugging and development.

JSON Compare Controls

Compare two JSON documents structurally, review changed paths, and inspect formatted content side by side.

Formatting indent

Ignore key orderShow only differences

Best for API payloads, config files, and JSON regression checks.

Upload left JSON file

Upload right JSON file

Left JSON

185 chars · 11 lines

Right JSON

196 chars · 11 lines

Added

Removed

Changed

Type changed

Total diffs

Formatted Left JSON

209 chars · 15 lines

{
  "app": {
    "name": "SmartTools",
    "version": "1.0.0",
    "features": [
      "regex",
      "diff",
      "jwt"
    ],
    "metadata": {
      "region": "ap-south-1",
      "active": true
    }
  }
}

Formatted Right JSON

226 chars · 16 lines

{
  "app": {
    "name": "SmartTools",
    "version": "1.1.0",
    "features": [
      "regex",
      "diff",
      "jwt",
      "base64"
    ],
    "metadata": {
      "region": "ap-south-1",
      "active": false
    }
  }
}

Changed paths

Structural differences found between the two JSON inputs.

Type

Path

Left value

Right value

added

$.app.features[3]

"base64"

changed

$.app.metadata.active

true

false

changed

$.app.version

"1.0.0"

"1.1.0"

Included features

Structural comparison instead of plain line-only comparison.
Added, removed, changed, and type-changed path summaries.
JSON validation with error line highlighting and code frames.
Ignore key order option for semantic comparison.
Upload both JSON files, swap sides, copy, and download reports.
Side-by-side formatted JSON views for manual inspection.

What can this JSON compare tool do?

This tool validates both JSON inputs, compares them structurally, highlights added, removed, and changed paths, and shows formatted side-by-side JSON so you can inspect exactly what changed.

Common use cases

Use it for API payload comparison, config review, regression debugging, migration checks, schema changes, and general developer workflows where precise JSON diffs matter.