CometPDF converts XLS, XLSX, and XLSM spreadsheets to PDF on Windows. When Microsoft Excel is installed, it uses Excel's native PDF export so orientation, print areas, page breaks, column widths, and formatting stay as close as possible to printing from Excel.
The goal is to make spreadsheet PDF conversion feel like printing from Excel, without forcing users to open each workbook manually. Choose your files, choose the output folder, and let the app create PDFs in a batch.
Excel files often contain price lists, financial reports, project budgets, internal schedules, production tables, and client data that should not be uploaded to an external service. CometPDF converts XLS, XLSX, and XLSM files directly on your Windows computer using Excel's own PDF export when Microsoft Excel is installed. This means print areas, column widths, page orientation, page breaks, headers, footers, and formatting come out as close as possible to what you see in Excel.
No online converter can fully replicate this workflow because no online tool has access to your local Excel installation, printer settings, workbook configuration, or Office export engine. CometPDF keeps the spreadsheet conversion local, making it useful for sensitive financial files, internal reports, and business data that should remain on the machine.
If Excel automation is unavailable for XLSX/XLSM files, CometPDF can still create a readable PDF using workbook data, sheet orientation, column widths, row heights, and basic styling. This fallback is not meant to replace Excel's own export for complex reports, but it helps when a workbook needs a quick readable PDF and Excel is unavailable.
When Microsoft Excel is installed, CometPDF uses Excel's own PDF export engine. This preserves print areas, page breaks, column widths, row heights, and cell formatting, giving a result close to printing from Excel directly.
CometPDF includes a fallback converter for XLSX and XLSM files that reads workbook data and produces a readable PDF. Formatting may differ from the Excel view, but the data and basic workbook structure are preserved.
Yes. When using Excel's export path, sheets configured for printing are included according to the workbook settings. The fallback converter also handles multi-sheet workbooks and creates readable output for each sheet.
Yes. Add multiple XLS, XLSX, or XLSM files and convert them in one batch. You can also merge all resulting PDFs into one file after conversion.
No. Conversion happens locally on your Windows computer. CometPDF does not send your spreadsheets, financial reports, or workbook data to any server.
Related: Word to PDF, offline PDF converter.