Can anyone give me a clue why one of my ebooks, produced exactly the same way as the rest and with nothing unusual (no extra images etc) is five times the size of the rest?
ETA: having removed both subsetted font and cover to no effect, it eventually occurred to me to check the original .docx file (converted from .odt since Calibre handles that format better), to discover that it was ABSOLUTELY MASSIVE for no reason. So that's where the problem lies, I need to work out why on earth a text doc with a single tiny image (publisher logo) is so huge...