JSON to CSV Converter

Nested objects and arrays are written into the cell as compact JSON strings rather than being flattened, so their structure is preserved. Note that CSV is untyped, and both JSON null and a missing key become an empty cell. If you need fully flattened, typed columns, restructure the JSON into a flat array of objects first.

An array of objects works best — each object becomes a row and the header is the union of all keys in first-seen order. A single object becomes a one-row table, and an array of primitive values becomes a single 'value' column.

No. The conversion runs entirely in your browser; nothing is sent to a server.