Export JSON to CSV with exact number tokens, escaped headers and explicit nested, null and formula policies. Preview, copy or save reviewed output.
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Export strict JSON rows into escaped CSV while preserving number lexemes and disclosing nested, null, missing and spreadsheet-formula mapping.
Avoid rounding large identifiers before spreadsheet import.
Export an unsafe integer and exponent, inspect raw CSV, review destination type-inference warning.
Original number tokens survive; receiving spreadsheet behavior is not guaranteed.
Map nested metadata and heterogeneous object columns.
Compare compact JSON cells/reject, null policies, union columns and escaped headers.
No object-to-string corruption or missing columns; representation loss is explained.
Choose formula handling and save reverse conversion independently.
Reject formula-like text, opt into prefix only deliberately, export and save three reverse fields.
Visible policy matches output, and existing CSV-to-JSON Project fields remain intact.
Outputs and checklists are planning aids. Review the linked current authorities and the records, terms, instructions, and requirements that apply to your exact situation before a consequential decision.
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A bounded strict parser retains number tokens instead of passing them through JavaScript Number. Duplicate decoded member names, malformed strings and mixed object/array row shapes are refused.
Objects use first-seen union columns, row arrays pad to the widest row and scalar arrays use one column. Nested data becomes compact JSON text or is rejected; missing and null cells have disclosed policies.
Headers and cells share delimiter/quote/CR/LF escaping. Formula-like text is preserved with a warning, prefixed only by choice, or refused. Quoting alone is not spreadsheet protection. Download BOM is separately opt-in.
Updated: August 2026
An analyst exports a large identifier without numerical rounding and verifies that the receiving spreadsheet imports that column as text.
An engineer exports heterogeneous object keys, encodes nested metadata as JSON text cells and checks missing versus null handling before import.
A reviewer rejects formula-like text, corrects the source and saves JSON-to-CSV-specific fields without replacing the earlier CSV-to-JSON conversion.
Decide how JSON values become cells before exporting. Large number spelling is preserved, but spreadsheet import can still infer types or round values; review the consuming application.