JSON to CSV
Convert between JSON and CSV, either direction.
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What JSON shape does this expect?
An array of flat objects, like `[{"name":"Ann","age":30}]`. A single object works too, treated as one row. Nested objects or arrays inside a field get stringified as-is, not split into columns.
Does it handle commas and quotes inside a field?
Yes, fields with commas, quotes, or line breaks get quoted the way spreadsheets expect (RFC 4180), both reading CSV in and writing it out.
Does this upload my files anywhere?
No. Everything runs in your browser. Files never leave your device, there's no server to send them to, and no account or log.