Size of Exported Excel file is very large

Hi,
I have a report that has around 10000 rows and 5 columns. When I export to excel, the excel file is very big, around 15MB.
But If the file is opened, and saved again , the size reduces to around 13MB.
Any suggestions on how to reduce the file size of the exported Excel file. I would prefer to export it to excel rather than CSV format.
Any help is appreciated.
Thanks....
ViVa1

Hi, actually as you have probably noticed the size grows a lot due to the use of different styles and formatting.
If you do not require any formatting then I would recommend you to consider a CSV file format again because it will result in the smallest file size which you can achieve with exporting.
Also for the future referencing SQL Server 2008 R2 exports reports only in XLS format, but SQL Server 2012 by default will export into a new XLSX file format which is a compressed (zipped XML based format) so the resulting files will be significantly smaller.
For example I created a small project to test exporting of 10000 x 5 data to an Excel file. I used this
.NET Excel component to create various spreadsheet files, it has a straightforward API for
exporting DataTable into an Excel file in .NET so you can test this out yourself with ease. The output files, without any formatting applied to them, have the following sizes: XLS (~1MB), XLSX (~300KB) and CSV (~250KB).

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