What version of InDesign? What version of EPUB? How many fonts are there and are they being embedded? Which fonts?
Hi Bob, thanks for answering. It's the latest version, EPUB 3.0. Only one font (Georgia), though I'm using italics and bold. I'm unsure whether it's embedded - how do you tell?
I think I found out why the file swelled, though. I looked inside and found a rogue 5.6MB image that must have been generated during export (presumably the rasterized image?) I'm using a jpg as a cover image, that's the >1MB one. Is it possible to stop it generating this extra image and just use the one I put in? And - if you have time - what in general is best practice for slim EPUBs? Would deeply appreciate any advice.
Use a very simple cover image or don't use one at all. You don't have to allow InDesign to generate one.
I don't recall ever trying to get a file down to the size you want/require. At a certain point you just can't go any smaller. The HTML and font files alone will cause the file to increase.
You still didn't tell us what version of InDesign you're using.
Hi Bob, as I said (perhaps ambiguously) I'm using the latest version of InDesign. I'm not sure that you're talking about ebooks? Ftr, the average size for a 350p text book on Amazon is around 3.5MB. You don't want it too big because of download fees. I think I've solved my problem now, it seems to work fine if I tell it to use the jpg image for the cover instead of rasterising the image. Many thanks for your time.