Converting a JSON array to TSV follows the same structural logic as JSON to CSV — the header row is the union of keys across all objects (not just the first one, which would silently drop columns for later objects with extra fields), and nested objects flatten to dot-notation columns — but with tab as the field delimiter instead of comma. The practical reason to pick TSV over CSV is robustness against embedded commas in real data (addresses, formatted numbers, free-text fields): correct CSV quoting handles this fine in principle, but a surprising amount of downstream tooling (legacy ETL scripts, some database bulk-load commands) parses CSV naively and breaks on an unescaped comma inside a quoted field. Tabs essentially never appear in genuine data values, so choosing TSV sidesteps that entire failure class rather than depending on every consumer correctly implementing RFC 4180 quoting. The equivalent edge case still applies in the other direction: a field value that legitimately contains a literal tab or newline character is escaped in the output, since an unescaped tab would be indistinguishable from a column boundary. This is rarer in practice than embedded commas but is handled the same way structurally. One practical advantage specific to TSV: it's the exact format Excel and Google Sheets place on the system clipboard when you copy a cell range, so pasting TSV output directly into either app is a native round-trip, generally more reliable than pasting comma-delimited text and hoping the spreadsheet's delimiter auto-detection guesses correctly. Once converted, validate structure with the CSV Validator (TSV shares the same tabular-integrity concerns as CSV) or clean up formatting with the CSV Formatter.