JSON Diff Online - Compare JSON Files Free
Free online tool to compare two JSON objects and visualize differences with highlighting
Original JSON (Left)
Modified JSON (Right)
JSON Diff Features
JSON Diff compares two JSON objects and shows you exactly what changed between them. Essential for debugging API responses, comparing configurations, and tracking data changes.
- Side-by-Side Comparison: View both JSON files next to each other
- Visual Highlighting: Green for additions, red for removed, yellow for changed
- Deep Nested Support: Compare deeply nested objects and arrays
- Swap Panels: One-click swap left and right panels
- No Signup: 100% free, no registration required
Before comparing JSON, you may want to format or validate it using a JSON Formatter or JSON Schema Validator.
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JSON Diff FAQ
How do I compare two JSON files online?
Paste your original JSON in the left panel and the modified JSON in the right panel. Click "Compare JSON" to see differences highlighted with colors.
What is JSON diff?
JSON diff is the process of comparing two JSON objects to identify what was added, removed, or changed between them. It's essential for debugging APIs and tracking data changes.
What do the highlight colors mean?
Green = Added (only in right JSON), Red = Removed (only in left JSON), Yellow = Changed (values differ between both).
Can I compare nested JSON objects?
Yes! This tool performs deep comparison of nested objects and arrays, highlighting differences at any depth level.
Can I swap the left and right JSON?
Yes, click the "⇄ Swap" button to exchange the contents of the left and right panels instantly.
How do I use this for API debugging?
Paste the expected API response on the left and the actual response on the right. The diff will show exactly which fields are missing, extra, or have different values.
Is the JSON comparison tool free?
Yes, 100% free with no signup required. All comparison happens in your browser, so your data stays private.