Excel Files

Hello Adam

Thank you for your question and welcome to the forum.

Excel files don't normally get a lot bigger all of a sudden unless there is a reason for it, so this is a difficult question to answer.

One of the most commonly documented reasons for file size increase in 2007 version, is when files are saved in .xls format (97-2003 compatible) the file size tends to be larger than when saving as a .xlsx (2007 version) format.

Kind regards
Amanda