Making Your Cover Image Show Up In Preview Views
And, to my chagrin, I've been doing it wrong.
Luckily, the fix is a simple tweak to content.opf. Previously, I told you to do this:
<meta name="cover" content="images_blahblah.jpg"/>Yeah, no. Change it to this instead:
<meta name="cover" content="cover-image"/>and then when you're declaring your images, make sure you declare it as cover-image, like so:
<item id="cover-image" href="images/9781939840004.jpg" media-type="image/jpeg" />
I've updated my helper script to do this automagically - if you're on a Mac or *nix, you can use it. And if you want to see the whole content.opf, my default style.css, and (and my other eBook utilities), swing on by this GitHub repository.