JSON Difference Checker
Compare two JSON strings and find differences
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What is this tool?
JSON diff tool compares two JSON objects and highlights differences between them. Shows added, removed, and modified keys with values in a clear visual comparison. Supports nested objects and arrays. Essential for debugging API responses, tracking configuration changes, and validating data transformations.
How to use
- 1
Paste first JSON
Input the original JSON in the left panel.
- 2
Paste second JSON
Input the modified JSON in the right panel.
- 3
View differences
See highlighted differences with color coding.
Frequently Asked Questions
How does JSON diff handle arrays?
Arrays are compared by index position. If elements are reordered, each changed position appears as a difference. For best results, ensure arrays have consistent ordering. Some tools support semantic array diff (detecting moved items), but positional comparison is most common.
Does it work with large JSON?
Yes, but over 10MB may be slow.
Is my data processed locally?
Yes, all processing happens in your browser. No data is sent to any server.