"=?Utf-8?B?SmFtZXM=?=" wrote in
:

I have just added one field to one of the tables

This will create in the file a copy of the original table along with
various editing structures. This will all take up space, which is not
automagically recovered unless you ask it:-

1 Run Repair and Compact to recover deleted space

2 You are way under the 2MB limit at which curruption becomes likely, so
who cares?

3 You might care, actually: it's considered good practice to repair and
compact active databases on a regular basis

4 But make a backup first, as it's not unknown for the repair & compact
to corrupt the file itself!

All the best


Tim F