JSON Diff Tool

Compare two JSON objects and instantly see the differences. Perfect for comparing API responses, config files, or any JSON data.

Compare JSONs

JSON 1 (Original)

JSON 2 (New)

Pro Tip: All comparison happens in your browser. Your data is 100% private and never sent to any server. Perfect for comparing sensitive API responses or configuration files.

What is JSON Diff?

JSON Diff (or JSON Compare) is a tool that helps you find differences between two JSON objects or files. It analyzes both JSONs and highlights what's been added, removed, or modified between them.

This is especially useful for developers comparing API responses, configuration files, database records, or any JSON data that changes over time.

How to Compare JSON Files

Paste or type your first JSON in the left editor (Original JSON)
Paste or type your second JSON in the right editor (New JSON)
Click "Compare JSONs" button to see the differences
Review the results - Added (green), Removed (red), Changed (yellow)
Copy the diff if you need to share or save it

Common Use Cases

🔄 API Response Comparison

Compare API responses before and after changes to ensure backward compatibility

⚙️ Configuration Files

Track changes in JSON configuration files across different environments

📊 Database Records

Compare database records to see what fields have been updated

🧪 Testing & QA

Verify expected vs actual JSON output in automated tests

Frequently Asked Questions

Is my JSON data secure?

Yes! All comparison happens 100% in your browser. Your JSON data never leaves your device and is not sent to any server.

Can I compare large JSON files?

Yes, our tool can handle large JSON files efficiently. The comparison is done client-side, so performance depends on your browser and device capabilities.

What types of differences are shown?

We show three types: Added (new keys/values), Removed (deleted keys/values), and Changed (modified values).

Do I need to sign up?

No! This tool is completely free and doesn't require any registration or sign-up.