What JSON Compare helps with
API response checks
Paste an old and new API response to see which values changed after a deployment, data migration, or backend update.
Config review
Compare JSON config files before release so added, removed, and modified settings are easier to review.
Readable paths
Differences are listed with JSON-style paths such as $.user.name, so you can quickly find the affected field.
How it works
Paste original JSON
Put the earlier version, expected response, or baseline config into the first panel.
Paste updated JSON
Put the newer version into the second panel. The tool validates both JSON inputs before comparing.
Review differences
See added, removed, and changed values, then copy or download the comparison summary for your notes.
Private browser-based comparison
No upload required
Your JSON is parsed and compared locally in your browser. JSON Toolkit does not send pasted JSON to a server for comparison.
Review sensitive data
If your JSON contains production secrets, tokens, private keys, or customer information, follow your company policy before using any online tool.
Current limitations
Array order matters
The compare result treats array positions as meaningful. If rows are reordered, review the output carefully.
Exact value comparison
String, number, boolean, null, object, and array values are compared directly. Formatting differences are ignored after JSON parsing.