JSON Diff
Compare two JSON documents and highlight the differences. All processing is done locally in your browser.
? Nested Structures? Array Comparison? 100% Local
Left (Original)
Right (Modified)
How to Use
- Paste the original JSON into the Left input, and the modified JSON into the Right input.
- Click Compare. The tool recursively compares all fields in both JSON documents.
- Results are shown as a tree: green (+) = added, red (?) = removed, yellow (≠) = changed, gray (=) = unchanged.
- Click any node with children to collapse or expand that branch.
- The summary badges at the top show a count of added, removed, and changed fields.
About JSON Diff Tool
JSON Diff compares two JSON documents and highlights structural differences: added keys (green), removed keys (red), and changed values (yellow). Invaluable for debugging API version changes, configuration drift, or migration verification. The tool recursively compares nested objects and arrays of any depth. All comparison logic runs in the browser -- no server involved.
Frequently Asked Questions
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