Affinity Publisher file size fluctuation

[vdamjanovski]

Hi all,

This is not really a bug report, but rather an observation of an unusual fluctuation of Affinity Publisher file size, which I can not explain.

I am not sure if it would affect anybody, but maybe it hides some unknown issue, unless there is a simple explanation.

I am writing my new book, using Affinity Publisher, which is now finished and we are going through some proof-reading.

The book has lots of colour illustrations, photos and tables, and certainly plenty of text, on a total of about 690 pages in A4 format.

Since the crash issues I have experienced a few times when editing text (and already reported it), every time I do editing and slight text changes, without adding new illustrations nor removing, I save the publisher file and make a duplicate copy of the file - just in case.

I then keep working with the original file, but the copies I make I number them with two digits (83, 84, 85, ...).

I keep all these copies on a backup drive, again, just in case I loose my original file due to crashing.

Now, what I noticed, and this is what I am reporting here, every next file version either increases or reduces in file size.

And I am not talking about a small change, but rather a change that is at least a few hundred MB, despite that nothing has been added nor removed from main book contents. 

The complete book size is just over 1GB, and as you can see from the file screens shot enclosed, the sizes fluctuate from 1.22GB, next one 1.47GB, then next one 1.07GB, then 1.12GB, then 1.4GB, etc. The last version is 1.51GB, and I am sure when I save my next little edit, it will probably be around 1.1GB or 1.2GB.

It is interesting that it seems like following a pattern of higher and lower sizes one after another.

I repeat again - there is no graphics added nor removed in the subsequent saving, only minor proof-reading text changes, often just a couple of sentences at a time.

I am really curious if Serif people have an explanation for this?

Thanks. 

[NotMyFault]

This thread might give some I sight