Free JSON Structure Diff Tool - Compare JSON Objects Online
Compare two JSON objects structurally to find differences instantly. Unlike text diff tools, our JSON diff comparer ignores key order and focuses on actual data changes. Highlights added, removed, and modified values with color coding. Perfect for debugging API responses, comparing configuration files, and tracking data changes. All processing happens locally in your browser—your sensitive data stays private.
1When to use this tool?
💡Verifying API response changes
💡Diffing configuration files (config.json)
💡Debugging complex JSON data structures
2Features
- Structure-based comparison (ignores key order)
- Visual highlighting of differences (Diff)
- Syntax validation
- 100% Client-side & Secure processing
3How to Use
- Paste the original JSON into the left panel.
- Paste the modified JSON into the right panel.
- Click the 'Compare' button.
- View added (green) and removed (red) lines in the result.
FAQ
Q. Does it ignore key order?
A. Yes, keys are sorted alphabetically before comparison, so `{"a":1, "b":2}` is considered equal to `{"b":2, "a":1}`.