#WHY IS MY WORD DOCUMENT SO BIG ZIP#
This meant moving away from the binary file format which was storage friendly and would open efficiently, to the more heavy file format (XMLs files compressed to a ZIP file). Since Excel 2007 Microsoft was pressured to open up the Excel format so other applications could use it. If you don’t know the difference between a XLSX (OpenXML format) and XLSX (Binary Excel format) file format I encourage you read my post on XLSB. Saving a file in XLSB from my experience often resulted in reducing file size even by 70%.
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You probably wondered here struggling with bloated Excel file, frustrated with having to wait for calculations to complete or constantly crashing Excel file. Microsoft Excel was designed to be a tool for managing relatively small datasets for Finance & Accounting purposes, today we see that Excel is used often for large data analysis, prototyping of complex solutions (built often with VBA Marcos). Large Excel files slow down your system, increase the likelihood of the file crashing as well as obviously use more drive space.
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In this post I will explain various ways to reduce Excel file size.