Output data encoding

Generate Shared String Table

File format of generated workbook

Use ZIP compression for ZIP-based formats

Overwride theme XML when exporting to XLSX/XLSM/XLSB

Suppress "number stored as text" errors in generated files

Override workbook properties on save

Desired codepage for legacy file formats

This requires encoding support to be loaded. It is automatically loaded in xlsx.full.min.js and in CommonJS / Extendscript, but an extra step is required in React / Angular / Webpack / ESM deployments.

Check the relevant guide https://docs.sheetjs.com/docs/getting-started/

Base64 encoding of NUMBERS base for exports

For single-sheet formats, export the specified worksheet.

The property must be a string (sheet name) or number (SheetNames index).

If this option is omitted, the first worksheet will be exported.

Field Separator ("delimiter") for CSV / Text output

Record Separator ("row separator") for CSV / Text output