JSON Diff Checker
Compare two JSON objects and get the differences between them.
Your first JSON
Your JSON to compare
Differences
How to Use This JSON Diff Checker
- Paste your first JSON object into the left input panel.
- Paste the second JSON object into the right input panel.
- The differences are highlighted automatically with color coding.
- Green lines indicate additions, red lines indicate removals, and unchanged lines remain neutral.
About JSON Diff
This tool compares two JSON objects and highlights the differences between them, similar to a Git diff view. Lines shown in green are additions (present in the second JSON but not the first), while lines in red are removals (present in the first JSON but not the second).
Privacy Note
Privacy: Everything runs locally in your browser. Your JSON data never leaves your computer.
Key Features
- Side-by-side JSON comparison with syntax highlighting
- Color-coded diff output (green for additions, red for removals)
- Automatic JSON formatting and pretty-printing
- Handles deeply nested objects and arrays
- Real-time comparison as you edit either input
- Client-side processing ensures data privacy
- Clear visual indicators for easy change identification
Common Use Cases
- Comparing API responses before and after changes
- Reviewing configuration file changes in deployments
- Debugging differences between expected and actual JSON output
- Validating data migration results
- Comparing database records exported as JSON
- Code review assistance for JSON-based configurations
Frequently Asked Questions
Does the order of keys matter in the comparison?
The tool compares JSON as formatted text, so key order can affect the diff output. If you want an order-independent comparison, sort the keys in both objects first. The tool will pretty-print both inputs to help normalize formatting differences.
Can I compare JSON arrays?
Yes, you can compare any valid JSON including arrays, nested objects, and primitive values. The diff algorithm works on the formatted text representation, so array element order and structure differences will be clearly highlighted.
What happens if my JSON is invalid?
The tool will attempt to parse and format both inputs. If either input contains invalid JSON, an error message will be displayed. Make sure both inputs are valid JSON before comparing to get accurate results.