How to Reduce File Size of Excel | Compress Excel File – 4 Methods

This tutorial will outline the methods for reducing the file size of an Excel workbook as presented in the provided video excerpt.

1. Remove Unused Rows and Columns

  • Excel workbooks can become unnecessarily large if they contain formatting or data in rows and columns beyond the used range.
  • To identify if this is the case, press Ctrl+End to jump to the last cell in the sheet. If this is beyond the area you are actually using, you have an opportunity to reduce the file size.
  • To clear unused rows and columns:
    • Press Ctrl+Home to go back to the top of the sheet.
    • Use Ctrl+Down Arrow to reach the last row of your data set.
    • Move down one more row to the first unused row.
    • Select all unused rows with Ctrl+Shift+Down Arrow and then Ctrl+Shift+Right Arrow to select all unused rows.
    • On the Home tab, click Clear and then Clear All.
    • Repeat this for unused columns.
  • You must close and reopen your spreadsheet to see the effect on the file size.

2. Modify Pivot Table Cache Settings

  • When you create a Pivot Table, Excel creates a “Pivot Cache,” which is a hidden copy of your data that can increase file size.
  • To prevent Excel from storing this cache:
    • Click inside your Pivot Table.
    • Go to the Analyse tab and click the Options button.
    • Select the Data tab.
    • Untick the Save Source Data with File option and tick the Refresh Data When Opening File option.
  • With these settings, the Pivot Cache will not be saved with the file but will regenerate when you open the file.

3. Compress Images

  • Images in your workbook can significantly increase the file size.
  • To compress all images in your workbook:
    • Select one of the images.
    • Go to the Picture Format tab and click Compress Pictures.
    • Untick the Apply only to this picture option to apply the settings to all images.
    • Choose a lower resolution for the images. You will see some degradation in image quality, but this will reduce the file size. 150 PPI is suggested as a compromise.
    • Click OK.

4. Save as an Excel Binary Workbook

  • You can save your workbook in a different file format that can reduce file size without impacting functionality.
  • Go to File > Save a Copy.
  • In the dropdown list of file types, select Excel Binary Workbook.
  • Click Save.

By following these steps, you can effectively reduce the file size of your Excel workbooks.

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