11-23-2013, 03:17 AM | #1 |
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How to manage kepub.epub in Calibre
Hi,
I need to have two versions of some files: kepub.epub and epub, because they are handled by different engine on the kobo reader. First I thought the question was: - is there an easy way to distinguish kepub.epub from epub in Calibre... Then I understood that at import time, all my kepub had been renamed, and therefore, that I didn't have kepub.epub anymore And my questions are: - How to import the kepub.epub safely into Calibre (I guess there is a template thing to modify)? without converting them, of course. - How can I distinguish them in Calibre? Thank you for your help or for pointing me toward a thread on this subject. (I read something about handling kepub in the latest features of Calibre or the driver, but don't know if it is for converting...) Regards François Calibre 1.12 KoboTouchExtended (2.2.13) Kobo utilities 1.4.3 |
11-23-2013, 03:39 AM | #2 |
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As far as calibre is concerned, the extension for a kepub is just "kepub". The "kepub.epub" extension is used on the Kobo ereaders only. When the kepub is sent to the device, the driver renames the file so the device will handle it properly.
Within calibre, a kepub is treated as any other format. If you select a book that has a kepub as one of its formats, it will be displayed in the details pain along with the other formats. In the tag browser, if you have any kepubs in the library, "Formats" will have an entry for them. Selecting this will show all books that have a kepub as one of its formats. Getting a kepub into calibre is a little different. If it is on the device, you can select it in the device list, use the "Add books to library function. This will copy sideloaded kepubs, but not purchased kepubs. If you have them elsewhere, you need to rename the file to have the extension "kepub". Calibre can then add the file as a book and extract the metadata as needed. Having calibre add a ".kepub.epub" as a kepub would be a good idea. I'll have a look and talk to Kovid, but I can think of a reason it might not work. The update in the latest version of calibre is to allow the KoboTouch driver to send kepubs to the device. This was needed for people who had the format in the library and didn't want to use the extended driver. I think that is it. If I missed anything or explained something badly, ask away. |
11-23-2013, 04:26 AM | #3 |
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Hi Davidfor,
You know you are a savior! Twice in a week! Great Many thanks François |
01-10-2020, 06:20 PM | #4 |
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I just downloaded a bunch of kepubs from https://standardebooks.org/
The Standard Ebooks guide says that I should copy these files straight on the Kobo, without using Calibre (they have a '.kepub.epub' extension). However I do need to put these books on Calibre first - for practical reasons (library management/backup, etc.). So I did try to add these ebooks to Calibre library, but the software detects them as simple epubs. Is there a way to make Calibre read these files as kepubs in a native way, in order to avoid a new and unneeded conversion when I send them to the Kobo device? |
01-10-2020, 06:52 PM | #5 |
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Standard eBooks has it all wrong.
epub — All devices and apps except Amazon Kindle and Kobo. azw3 — Amazon Kindle devices and apps. Also download the Kindle cover thumbnail to see the cover in your Kindle’s library. kepub — Kobo devices and apps. epub3 — Advanced format not yet fully compatible with most ereaders. These are the list of formats and they got some of it very wrong. ePub is compatible with Kobo. And there is no need for ePub 3 for any of these eBooks. And if you have to download the cover thumbnail separately, then they'd done something wrong with the KF8 version. |
01-10-2020, 07:06 PM | #6 | |
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01-10-2020, 07:11 PM | #7 |
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They don't say that epub is not compatible with Kobo, they only suggest to prefer their pre-formatted kepubs over the epubs on Kobo devices. As a matter of fact they also provide instructions on how to send epubs to Kobo via Calibre+KTE...
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01-10-2020, 07:26 PM | #8 | |
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Quote:
They need to get rid of ePub3 and fix it so they are no longer saying that KePub is the only format that will work on a Kobo. |
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01-10-2020, 07:27 PM | #9 | |
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Quote:
However when I drag and drop any .kepub.epub file on Calibre, this ebook is listed as an EPUB in the right column of Calibre (below the book cover). All the other books from Calibre library (all epubs converted to kepub format via KTE) have both the EPUB and KEPUB files listed. So Calibre can tell the difference between the two formats and properly detect them as such. It just fails to detect the kepubs dragged and dropped from the outside (i.e. the kepub files unrelated to KTE conversions). |
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01-10-2020, 07:59 PM | #10 | |
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01-10-2020, 10:55 PM | #11 |
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The last time I converted a batch of epubs using kepubify, I renamed the files from .kepub.epub to .kepub and then dropped them on the epubs' entries in calibre. This is a manual process and worked for testing but it's not something I would want to do on a large scale.
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01-11-2020, 04:30 AM | #12 |
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So there's no specific feature - either in KoboTouchExtended or Kepubify - to automatically fix this issue or batch-rename files?
And also, is there a specific reason why Kepubs are not natively supported by Calibre after all these years of development? |
01-11-2020, 07:28 AM | #13 | ||
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Quote:
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And calibre is designed to be extensible using plugins. All the necessary plugins to support kepubs for those who want to store them exist. Just install them. The only issue is you need to drop the .epub from the name. |
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01-11-2020, 08:15 AM | #14 | |
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OK, I just conducted some tests.
[Please note that in KoboTouchExtended driver I ticked "Cleanup ePub markup" and "Hyphenate Files". I have always kept those configurations like that because the developer himself prefers them to be ticked.] Then I opened all these files on my Kobo one after another. I didn't change font and any other settings - and started to take pictures to them. Then I used the pictures to visually compare the formatting of the same bunch of pages. Here are the comparative results:
So, Standard Books kepubs are indeed optimized and they do require the manual editing .kepub.epub > .kepub) in order to work in a Calibre library. I guess I'll really a tool to do that in big scale. Many thanks @JSWolf and @DNSB for the help. Quote:
Even if I do understand the general sense of your answer, kepubs have been around for a while. AZW3 are Amazon-specific files just like KEPUBS are Kobo-specific files, so - considering that both formats have been around for many years now - why do AZW3 files have native support and KEPUBs don't? Kobo is the 2nd most popular producer after all. And as I have shown, it is very useful for backup-restore / practical reasons to have Standard Books' native kepubs in Calibre library instead of epubs in my library. Couldn't you try to normalize this situation through your plugins? (Allow Calibre to recognize .kepub.epub files just like .kepub files? |
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01-11-2020, 08:31 AM | #15 | |
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Quote:
As for the font size, there are some patches to allow you to have ePub and KePub font settings to be the same. So you do not have to go from one to the other and have different font sizes. I have applied the patches and I no longer have different font sizes for ePub and KePub. Here is the link to the patch thread for the 4.19.x firmware. https://www.mobileread.com/forums/sh...d.php?t=325572 |
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