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Tools > JSON Diff

JSON Diff

Compare two JSON objects and highlight differences

Left (Original)
Right (Modified)

🔒 This tool runs in your browser only. No input data is sent to any server.

About JSON Diff

JSON Diff Viewer compares two JSON structures and highlights differences at the key and value level. Detect added, removed, and modified properties between two JSON objects. Perfect for comparing API responses, configuration files, or any structured JSON data.

How to Use

  1. Paste the original JSON in the left panel.
  2. Paste the modified JSON in the right panel.
  3. Click Compare to see structural differences highlighted.
  4. Review added (green), removed (red), and modified (yellow) keys.

Key Features

  • Deep structural comparison of JSON objects and arrays
  • Color-coded highlighting: additions, deletions, modifications
  • Key-level and value-level diff detection
  • Handles nested objects and arrays of any depth