Data tool / JSON
JSON Diff
Compare two JSON documents and pinpoint every meaningful change without sending data to a server.
100% processed in your browser
Original JSON
122 charsUpdated JSON
167 charsComparison result
Object key order is ignored. Array order is compared.
Compare two valid JSON documents
Validation errors are shown independently for each side.
How to use it
- 1 Paste the original and updated JSON documents.
- 2 Choose Compare to validate both sides and find changes.
- 3 Review the side-by-side or unified result, then copy or download it.
Useful for
- Reviewing API response changes
- Comparing configuration revisions
- Checking generated JSON before deployment
Good to know
- Object key order is ignored, but array order is significant.
- The downloadable result is a readable text summary, not a patch file.
- Very large documents may be limited by device memory.
Questions
JSON Diff FAQ
Does JSON key order affect the comparison?
No. Object key order is ignored because it does not change the meaning of a JSON object.
How are JSON arrays compared?
Arrays are compared by item position, so changing the order of array items is reported as a difference.
Are the compared JSON documents uploaded?
No. Both documents and the generated comparison remain inside your browser.
Continue locally
Related tools
Keep working with another browser-only tool. Your files and tool inputs stay on your device.