JSON Diff / Comparator — Free Online Tool

Compare two JSON objects and highlight all differences. JSON Diff / Comparator is a free online tool from the ToolsRift JSON Tools collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.

Loading JSON Diff / Comparator…

How to use JSON Diff / Comparator

  1. Open the JSON Diff / Comparator above — it loads instantly, no account needed.
  2. Enter or upload your input. Everything is processed locally on your device.
  3. Get your result immediately and copy or download it with one click.

Frequently asked questions

What types of differences are shown?

Added keys (green), removed keys (red), and changed values (yellow) are all highlighted.

Does it handle nested objects?

Yes — the diff is recursive and shows differences at any nesting level.

Can I compare JSON arrays?

Yes — array element differences are shown with index-based tracking.

More JSON Tools

JSONPath Tester
Test JSONPath expressions and extract values from JSON
JSON Schema Validator
Validate JSON data against a JSON Schema (draft-7)
JSON Key Sorter
Sort all JSON object keys alphabetically (deep)
JSON Flattener
Flatten nested JSON into a single-level dot-notation object
JSON Unflattener
Expand flat dot-notation JSON back to nested structure
JSON Key Extractor
Extract all keys, paths, and values from a JSON object

← View all JSON Tools