Yeah, I had a careful look at the reports myself in the last hour. It seems some of my images were converted to png for some reason (despite ALL sources being jpg). The png files seem to be the larger ones. No idea why they were changed like this.
Even in N1, some images were changed to png, but N2 seems to have suffered it worse, hence the larger file size.
Is there an easy way for me to change them back into jpg through Sigil?
On another note, both Ebooks are a similar total size when I made them PDFs.
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