I built an Access front end this month that I am unable to shrink it. I've tried the following:
Compact and Repair
Transferring all objects (tables, queries, forms...) from the current MDB file to a new MDB file.
No matter what I do, the smallest I can get the file is 50 MB. If I ZIP the file, however, it shrinks it to 1.5 MB. I've embedded some nice JPG images on some forms, but they're all small, around 30 to 40 KB.
It's a mystery.