💬 Questions and Help

Hi, I’m currently using exceljs for generating reports in both normal and large-scale datasets.

I understand that WorkbookWriter (Streaming XLSX Writer) is designed for memory efficiency by writing rows directly to disk. I’ve successfully used addRow().commit() for writing large datasets.

However, I need clarification regarding image support:

❓ Can workbook.addImage() and worksheet.addImage() be used with Excel.stream.xlsx.WorkbookWriter?

When I attempt the following with streaming mode:

const workbook = new Excel.stream.xlsx.WorkbookWriter({ filename: 'output.xlsx' });
const sheet = workbook.addWorksheet('Example');

const imgId = workbook.addImage({
  filename: './image.jpg',
  extension: 'jpeg'
});
sheet.addImage(imgId, 'B2:D10');

I get the following error:

TypeError: sheet.addImage is not a function

Could you confirm whether this feature is supported or planned for future versions?

If not, are there any recommended workarounds (e.g., post-processing or hybrid rendering)?

Thanks in advance!