JSON Diff Tool - Compare JSON Files

Compare JSON files online for free. Find differences between JSON documents. Highlight changes.

JSON Diff Tool

Compare two JSON objects and find differences

JSON 1 (Original)

JSON 2 (Modified)

What This Tool Does

Deep comparison of JSON objects
Detect added, removed, and modified fields
Show before/after values for changes
Statistics on difference counts
Path-based difference reporting

How to Use

1
Enter JSON objects
Paste two JSON objects to compare
2
Compare
Click "Compare JSON" to analyze differences
3
Review changes
See color-coded added/removed/modified items
4
Export report
Copy difference report for documentation

How it works

1

Enter JSON objects

Paste two JSON objects to compare

2

Compare

Click "Compare JSON" to analyze differences

3

Review changes

See color-coded added/removed/modified items

4

Export report

Copy difference report for documentation

Use Cases

Comparing API response versions
Validating data transformations
Reviewing config file changes
Testing JSON schema updates
Debugging data mismatches

Frequently Asked Questions

How does the tool compare deeply nested JSON objects?

The tool recursively compares all nested properties and arrays at any depth, displaying the full property path (e.g., user.address.city) for each detected difference.

What do the color codes represent in the JSON diff?

Green indicates properties added in the second JSON, Red shows removed properties from the first JSON, Yellow marks modified values, and Gray represents unchanged data (can be toggled with checkbox).

Can JSON Diff handle large files over 1MB?

Yes, but files larger than 1MB may take 10-30 seconds to process. For faster results, consider minifying JSON first or splitting into smaller comparison chunks.

How are JSON arrays with multiple elements compared?

Arrays are compared element by element. If arrays have different lengths or any element differs, the tool shows which specific elements were added, removed, or modified.