Polish

svda · 06-06-2018, 04:04 AM

How come, when I polish my books to update the cover in the bookfiles and remove a previously inserted book jacket, it still leaves the image*.jpeg inside the epub-file ?

I'm asking because another book-app I use finds the image*.jpeg inside and rather uses that one than the cover.jpg made by calibre (internal & external).

Is there an explanation for this ?

I can only overturn this by manually editing the epub and deleting the old covers that are named image*.jpeg

kovidgoyal · 06-06-2018, 04:07 AM

It will depend on whether the image is properly identified as a cover image before the polishing or not. EPUB files are notorious for not having properly identified cover images.

svda · 06-06-2018, 06:41 AM

Thx Kovid. How does one properly identify a cover image as a cover ? I just opened edit book, went to the pictures cathegory and saw that calibre made cover.jpg while the unwanted covers were named image*.jpeg.
Should they have been named cover.jpg from the start by the publisher ?

kovidgoyal · 06-06-2018, 07:01 AM

No, there has to be specific metadata in the OPF file marking the cover. It varies between different EPUB versions. If a file is marked as cover, then in the editor it will have a tiny cover icon next to it in the File browser

06-06-2018, 04:04 AM	#1
svda Connoisseur Posts: 52 Karma: 8426 Join Date: Feb 2013 Location: Belgium Device: none	Polish How come, when I polish my books to update the cover in the bookfiles and remove a previously inserted book jacket, it still leaves the image.jpeg inside the epub-file ? I'm asking because another book-app I use finds the image.jpeg inside and rather uses that one than the cover.jpg made by calibre (internal & external). Is there an explanation for this ? I can only overturn this by manually editing the epub and deleting the old covers that are named image*.jpeg

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06-06-2018, 04:07 AM	#2
kovidgoyal creator of calibre Posts: 45,258 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	It will depend on whether the image is properly identified as a cover image before the polishing or not. EPUB files are notorious for not having properly identified cover images.

06-06-2018, 06:41 AM	#3
svda Connoisseur Posts: 52 Karma: 8426 Join Date: Feb 2013 Location: Belgium Device: none	Thx Kovid. How does one properly identify a cover image as a cover ? I just opened edit book, went to the pictures cathegory and saw that calibre made cover.jpg while the unwanted covers were named image*.jpeg. Should they have been named cover.jpg from the start by the publisher ?

06-06-2018, 07:01 AM	#4
kovidgoyal creator of calibre Posts: 45,258 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	No, there has to be specific metadata in the OPF file marking the cover. It varies between different EPUB versions. If a file is marked as cover, then in the editor it will have a tiny cover icon next to it in the File browser

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