CSV ↔ JSON

Edit either side and the other updates. Quoted fields, commas and newlines inside them, and "" escapes all parse.

CSV

first row is headers

JSON

infer numbers/booleans

Values come back as plain strings by default, so "007" stays "007". Tick "infer" to convert unambiguous numbers and true/false instead. A CSV row with fewer fields than the header is padded with empty strings; a row with more has the extras dropped. A JSON cell holding an object or array is written to CSV as its JSON text.