XL7: Version 5.0 File Size Larger After Saving in Version 7.0

CAUSE

This behavior occurs in part because of an optimization in Microsoft Excel version 7.0 that allows Microsoft Excel to save files faster than version 5.0. Note that when you create and save a file in Microsoft Excel version 7.0, the file is not necessarily larger than the equivalent file that you create and save in Microsoft Excel version 5.0. However, when you create a file in Microsoft Excel version 5.0, and then open and save the file in Microsoft Excel version 7.0, the file size increases by approximately 3K.

Note that in Microsoft Excel version 7.0, when you open a file that you created and saved in Microsoft Excel version 5.0 without summary information, the file size may increase by approximately 5-9K. The greater the size of your Microsoft Excel version 5.0 file, the smaller the amount that the file size increases when you open and save the file in Microsoft Excel version 7.0. For example, a Microsoft Excel version 5.0 workbook that contains 16 worksheets does not increase in file size as much as a version 5.0 workbook that contains 1 worksheet when you save the file in Microsoft Excel version 7.0.