JSON Compare & Diff Tool
Compare two JSON objects and find differences instantly. Visual diff with color-coded highlighting for additions (green), deletions (red), and modifications (yellow). Line-by-line comparison with path tracking. Free online JSON comparison tool - no server upload required.
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What is JSON Diff?
When working with JSON data in development, configuration management, or data migration, comparing two JSON files to identify changes is essential. Our JSON Diff tool makes it easy to visualize differences between JSON objects, highlighting additions, deletions, and modifications with color-coded output.
Simply paste your original and modified JSON content, and the tool instantly generates a side-by-side comparison showing exactly what changed. Deeply nested structures, arrays, and complex objects are handled intelligently, making it easy to spot even subtle differences.
The comparison happens entirely in your browser - your data never leaves your device, ensuring privacy for sensitive information. Perfect for reviewing API changes, configuration updates, or debugging data transformations.
How to use
- 1 Paste original JSON in the left input area
- 2 Paste modified JSON in the right input area
- 3 Or click "Load Example" to see sample JSON comparison
- 4 Click "Compare" to generate the diff
- 5 View color-coded differences in the output
- 6 Expand/collapse sections to navigate complex structures
- 7 Review additions (green), deletions (red), and changes
- 8 Copy results or download comparison report
Common use cases
- ✓ API response comparison: detect changes in API versions
- ✓ Configuration management: compare config files before and after changes
- ✓ Debugging: identify data transformation issues
View full documentation for more use cases →