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#1 |
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Conversion to ePub produces small cover size in Nook library
The ePub file resulting from converting my book from XHTML looks and works fine when viewed in Calibre or Adobe Digital Editions. But when I import the ePub to Nook for PC and view it there, the library view shows a shrunk-down size for the cover, about 1/4 of the size of other books in the library.
When I view the same cover within the book itself, this problem doesn't occur. Any ideas how I can fix this? |
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#2 |
Grand Sorcerer
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What is the resolution of the cover image in Calibre?
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#3 |
Grand Sorcerer
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It will be the code in the page displaying the image. Odds are, the cover image is smaller and the code is simply putting it in the page without resizing it. The calibre viewer will show the cover page full size as it does not use the code. If it determines that the cover page is just the code to display the image, it simple displays the image.
If you change to cover page to use an SVG wrapper and have it fill the page, it should work better. There are options in the conversion or Polish to do this. |
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#4 | |
Grand Sorcerer
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Just asking to clarify the problem. I don’t know how the Nook app works. |
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#5 | |
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#6 |
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#7 | |
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Quote:
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="100%" height="100%" viewBox="0 0 563 751" preserveAspectRatio="xMidYMid meet"> <image width="563" height="751" xlink:href="cover.jpeg"/> I'm going to try editing this code in Calibre to see if that will solve it. |
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#8 | |
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#9 |
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That's exactly what I mean. The cover shows as a small square inside a white box. The white box is the size of other thumbnails in the Nook library.
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#10 | |
Bibliophagist
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Your image size in the SVG wrapper suggests you have set an approximately 600x800 device as the Output profile (Generic eInk for example). Last edited by DNSB; 08-18-2022 at 12:36 PM. |
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#11 | |
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However, when viewed in the Nook app, the cover thumbnail still has the same problem as before. (Note that I'm viewing the book in the Nook Windows app, not Nook for PC which I stated previously.) My guess is that the number of people who will experience this glitch is miniscule, so I'm going to ignore it and go on with my life. Thanks to all for your help! |
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#12 | |
Grand Sorcerer
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You can fix this easily in the editor. Again, calibre will update the cover image and metadata when you open the editor (there is an option in the editor to turn this off). You can have calibre regenerate this page . Click the "Tools" in the menu and then "Add cover". You will be prompted to choose the image for the cover and there is an option about whether to preserve the aspect ratio of the cover (the above does not). When you click OK, calibre will replace the existing titlepage.xhtml with a new version with sizing for the current cover image. If you have a lot of these cases, you can use the Polish books tool to update the covers in a batch. Or if you do the conversion after updating the cover in the library, it will use that when building the epub and it should all be correct. |
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Thread | Thread Starter | Forum | Replies | Last Post |
cover size - epub what's a good size? | christopher22 | Calibre | 3 | 01-19-2019 04:56 PM |
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