Compress an Excel file — without uploading it
Shrinks the images embedded in your workbook. Nothing uploads.
Shrinks the images embedded in your workbook. Nothing uploads.
An .xlsx is a ZIP archive holding the sheet data, the formatting and every embedded image. Cell data is remarkably compact — a workbook with a hundred thousand rows is often only a few megabytes. What inflates a file is pasted screenshots, logos and chart images kept at full resolution.
So a spreadsheet that will not fit past an email limit is usually carrying pictures, not numbers.
PackFit recompresses those embedded images and repacks the workbook. Formulas, formatting, sheet structure and cell data are untouched — it never rewrites the spreadsheet itself, only the pictures inside it. The result opens in Excel exactly as before.
No. Only embedded images are recompressed; the sheet data and formatting are repacked untouched.
If it is mostly cell data with no large images, there is little to recover — spreadsheet data is already compact.
No. It is processed entirely on your own device.