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Ebook Formatting
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substituting cover in an epub file
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Karen
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Oct 14, 2011 03:18AM

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Hope this helps,
POW

I've tried to do this in Calibre, but I'm not sure it worked. Do you know whether Calibre is up to the job?

I've tried to do this in Calibre, but I'm not sure it worked. Do you know whether Calibre is up to the job?"
Calibre works for me. Load the ePub into Calibre, select tweak the ePub from the menu, and replace the "cover.jpg" file. It's best if you replace with a file that is the same size and resolution.
It's even easier if you have source zip file the ebpub was generated from, then you just edit the metadata and replace the cover.




Not going to buy yet another device for testing. My acquaintances using Smashwords for Nook don't seem to be having any formatting problems.

Karen / Ron. I used Smashwords to push my book to B&N for NOOK as well. There were no problems. If you follow the Smashwords guide you should be fine. Getting a cover for a paper version may be different. I haven't tried that yet.

I have had some problems with my epub cover on Nook that I did not have on Kindle. I have yet to totally sort it out, so my Nook edition's cover is a little different.
Inside content was not an issue.
Ward

I have read that, to publish on Nook, your book must have an ISBN number that's a cost of $150. Is that true?

Ask for anything you may need, I'm kind of professional ebook maker ;)

Ken wrote: "D.L. wrote: "Ron wrote: "According to the PubIt guide, there is no special specification for Nook. Do you have a copy of the Smashwords Style Guide? It recommends a w:h ratio of 500:800. I couldn't..."

Smashwords will provide a free ISBN so it's not an issue if it's your Smashwords edition going to B&N. You do have to specifically ask for one from Smashwords by going to the ISBN manager (left hand side of the screen). It's not automatic.

Different ePub devices handle interpret the epub code differently. Your Nook is trying to stretch the image to be full-screen and is not respecting the aspect ratio. It's not the only device to do this. I recently created a book with full page internal illustrations and faced a similar problem with the epub version (Hooray for the Kindle... despite some limitations at least it obeys its own format consistently).
Amazingly, in ePUB2 (which is what current devices read) there is no way to specify that you want a full page illustration with aspect ratio preserved. It's listed as a desired feature for the ePub3 format.
There's a lot of advice about this on the web, but it smacks of voodoo, which doesn't surprise me as different devices handle this in different ways and may change with new firmware versions.
My approach was to put the 600x800 pixel image at 150dpi in its own xhtml , remove references to viewboxes, remove specification of size. Simply set margin to 0 and center and leave the rest to the device. This works well on Adobe Digital Editions, iPhones, iPads that I've tested it on. I'd like to try on a Nook, but I can't buy one from my country (UK).
If you're interested, I guess I could send you the file and if it doesn't stretch on the Nook, then that's an approach worth taking.

In the case of my full-page illustrations, the Meatgrinder was defining a css class
height: 738;
width: 554
I didn't like the results on an iPad, as this looked too small.

I know many people use Calibre to add cover. And if you have an iPad or iPhone, you can use iTunes, too.
I use the Ultimate Converter to add cover to ePub.
http://www.epubor.com/how-to-add-cover-to-epub.html