Collect multiple workbooks
Each source worksheet becomes a separate sheet in the output workbook.
The first 12 rows will appear after a spreadsheet is loaded.
Progress0%
Choose a file to begin.
Output preview
Waiting for an output file.
Features and quick guide
Why use this tool?
Combine monthly reports, surveys, data tables and research workbooks into one XLSX.
3-step quick guide
- 1Choose or drop multiple spreadsheets and review the first preview.
- 2Confirm the file list and source sheets.
- 3Collect them locally and download one XLSX.
Privacy promise
PDF and spreadsheet bytes are parsed and exported only in this browser tab; they are never sent to a server.
No file-upload endpoint is used; speed depends on your device and browser support.
Frequently asked questions
How is CSV handled?
SheetJS reads CSV as one worksheet before combining it with the others.
Are duplicate sheet names overwritten?
No. The tool adds file names or sequence numbers to keep names unique.
Is the data uploaded?
No. Parsing and XLSX creation happen in this browser.