JSON to XLSX
Add JSON by paste, file or public URL, preview the table, select the fields you need and download a real .xlsx file with typed cells and a frozen header row.
Unlike CSV, XLSX is Excel's native workbook format. Numbers and booleans remain typed, headers are styled and the first row stays visible while you scroll.
Workbook generation happens locally and is limited to 100,000 rows and 1,000,000 data cells to avoid exhausting browser memory. Use CSV for larger exports.
Native XLSX is included with a Power Pack, Standard or Pro plan. Free conversion remains available as spreadsheet-compatible CSV.
XLSX is a native Excel workbook that supports typed cells and workbook features. CSV is a simpler text table that is more scalable and opens in many spreadsheet tools.
A browser must assemble and compress the workbook in memory. The limit prevents unstable downloads; CSV remains available for larger files.
No. Parsing and workbook creation run locally in your browser. Only account usage metadata is sent when paid limits are enforced.