DevUtility.site

JSON Diff & Comparator

Data Formatters • 100% Client-Side Processing

Deep visual JSON comparator and diffing tool. Normalizes keys, aligns indentation, and highlights additions, deletions, and modifications side-by-side.

Privacy First: JSON Diff & Comparator executes 100% locally in your web browser. No inputs or generated outputs leave your device.
Line-by-Line Semantic Diff (Changes detected)
{
"name": "DevUtility",
- "version": 1,
- "cache": true
+ "version": 2,
+ "cache": true,
+ "privacy": "local"
}

Tool Chaining — Continue Workflow

Take your result from JSON Diff & Comparator directly into companion utilities:

How to Use

  1. Enter Original JSON on the left and Modified JSON on the right.
  2. Click Compare JSON to calculate differences.
  3. Review green additions and red deletions.

Key Features

  • •Automatic pre-formatting before diff
  • •Color-coded line additions and removals
  • •Detects missing and modified keys

Technical Scope & Limitations

  • • Diff is computed line-by-line on canonical formatted structures.