Flatten a JSON array into a CSV ready for Excel, Sheets, or BigQuery.
Got an API response that's a JSON array and need it in a spreadsheet? This converter takes [{...}, {...}] and produces a CSV with one row per object. Nested fields are flattened with dot notation (user.name → user.name column), arrays are joined with a configurable separator, and you can pick comma, tab, or semicolon as the delimiter. Quoting is RFC 4180 compliant so values with embedded commas, quotes, or newlines round-trip cleanly. Useful for ad-hoc analysis in Sheets, importing into a database, or just pasting into a Slack thread for a colleague. Runs entirely in your browser — even on large arrays.