How to Convert JSON to CSV Without Losing Data

Start with an array of records

For predictable columns, use a top-level array whose items share the same keys. Validate the JSON before conversion.

[
  { "name": "Ada", "role": "Engineer" },
  { "name": "Lin", "role": "Designer" }
]

Decide how to handle nested values

Flatten nested keys, serialize nested values as JSON strings, or exclude fields you do not need. Make the choice explicitly so the CSV remains reversible and understandable.

Verify the result

Open the output in the CSV converter and check the header row, record count, delimiters, quotes, and non-ASCII text before sharing or importing it.