Q: How do I compare two JSON files online?

A: Paste or upload two JSONs into the left and right boxes, enable "Sort keys" if you want to ignore key order, then review the two-column results for missing/extra keys and different values.

Q: Can the tool ignore key order or whitespace?

A: Yes. Turn on "Sort keys" to normalize key order before comparing. Whitespace is not relevant after JSON parsing.

Q: Are my JSON files uploaded?

A: No. All comparisons are processed locally in your browser. Nothing is uploaded.

Q: How are arrays compared?

A: Currently by index (position). If arrays are in different orders, they are reported as different. You can pre-sort arrays or we can add an "ignore order" option if needed.

Q: How to quickly find missing or extra keys?

A: Check the two-column JSON trees: Left Missing/Left Extra on the left, Right Missing/Right Extra on the right. Structures reflect original paths for quick locating.

Q: Does it support large JSON?

A: Yes for typical sizes. Extremely large objects may render slowly. Since everything runs locally, performance depends on your device.