Question 1

Is my data uploaded to a server?

Accepted Answer

No. The conversion runs entirely in your browser using JavaScript. Your JSON never leaves your device.

Question 2

What JSON shape does this expect?

Accepted Answer

An array of objects, e.g. [{"name": "Ada"}, {"name": "Grace"}]. Each object becomes a CSV row and the column headers come from the object keys. A single object (not wrapped in an array) also works and produces one row.

Question 3

What if my objects have different keys?

Accepted Answer

The CSV columns are the union of all keys found across all objects. Rows that lack a key simply get an empty cell in that column.

Question 4

How are nested objects and arrays handled?

Accepted Answer

Nested values are serialized as JSON strings inside their CSV cell, since CSV is a flat format. This keeps the data intact so it can be parsed back later if needed.

JSON to CSV Converter

Frequently asked questions

Related tools