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JSON Diff (Compare JSON Objects)

Compare two JSON objects structurally to view added, removed, or changed values instantly.

Original JSON (Left)
Updated JSON (Right)

What is JSON Diff?

A JSON Diff (difference) utility compares two JSON objects or files structurally. Simple text-comparison tools (like standard line-by-line diffs) fail if keys are sorted differently or if spacing changes. A structural JSON diff analyzes the actual keys and nested hierarchies to identify additions, deletions, or updates.

Fawru JSON Diff Features

  • Structural Analysis: Analyzes hierarchies rather than text alignment or spacing differences.
  • Visually Marked Output: Outputs clear lines showing [ADDED] (green indicator), [REMOVED] (red indicator), and [CHANGED] (yellow indicator) with old and new values.
  • Safe and Local: Comparisons run fully in Javascript client-side.

How to Compare JSON Files

  1. Paste your original JSON structure into the Left panel (Original JSON).
  2. Paste the updated JSON structure into the Right panel (Updated JSON).
  3. Click Compare JSON Structural Diff to analyze changes.