JSON Diff & Compare

data_object Left (Original)
data_object Right (Modified)

JSON Diff & Compare

Compare two JSON documents side by side. Quickly identify added, removed, and changed values with clear path-based output.

How to Use

  1. Paste original JSON — Paste the original JSON document into the left panel.
  2. Paste modified JSON — Paste the modified JSON document into the right panel.
  3. Click Compare — The tool compares both documents recursively and shows all differences with their JSON paths.

Key Features

  • Deep recursive comparison of nested objects and arrays
  • Path-based output showing exact location of each difference
  • Three change types: added (+), removed (-), and changed (~)
  • Load JSON from files for easy comparison of large documents

Use Cases

  • Comparing API responses before and after a code change
  • Reviewing configuration file changes between environments (dev, staging, production)
  • Validating data migration results by comparing source and target records

Frequently Asked Questions

How are differences displayed?

Each difference shows the JSON path, type of change (added, removed, or changed), and the old/new values.

Does it compare nested objects?

Yes. The comparison is recursive and detects differences at every nesting level, including arrays.

How are array differences detected?

Arrays are compared element by element by index. Added or removed elements at the end are detected, as well as changed values at each position.

What if both JSONs are identical?

If no differences are found, the result will display 'No differences found.' confirming that both documents are identical.

Can I compare very large JSON files?

Yes, but performance depends on your browser. For very large files (over 10 MB), the comparison may take a few seconds. All processing happens locally.