About this JSON to CSV converter
Input must be a JSON array of objects: headers are the union of all keys in first-appearance order; object/array values are serialized as JSON strings and null becomes empty. Conversion follows RFC 4180 — fields containing commas, double quotes or line breaks are wrapped in double quotes, and internal quotes are doubled.
Copy the result directly or hit Download .csv to save a file that starts with a UTF-8 BOM, so Chinese text opens correctly in Excel. The page also reports row count, column count and output size. Everything runs locally in your browser — ideal for exporting list data from API responses.