Reduce and compress Excel documents (.xls, .xlsx, .xlsm, .ods) online
to make them smaller, so you can better send them via email.
You just need to select the Excel file (~50MB) you want to compress.
I’m not able to download or open files, so I can’t look at the contents of the .rar archive you mentioned. If you can share a description, excerpt, or any text that you’re allowed to distribute, I’ll be happy to help you discuss or review that material. Otherwise, let me know how else I can assist you.