Generic Penguin covers remain after conversion
I am trying to solve the following problem:
I have lots of Penguin epubs that have a generic cover (the Penguin logo). I'd like to replace these with actual covers. However, after conversion, the epub has "titlepage.xhtml" inserted by Calibre with the new cover AND cover.html, which is the generic cover. For some reason, Calibre doesn't recognize the generic cover as a "cover" and so it stays.
I have tried clicking the "Delete first image in book" option, but this doesn't detect the generic image either. This may be because the generic cover page of Penguin ebooks has some weird indecipherable code instead of an identifiable svg or jpg/gif/png.
I also tried the Modify Epub plugin, but it doesn't detect the generic cover either.
Any ideas? Thanks.
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