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Old 09-23-2023, 10:02 AM   #1
mmc_meneses
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New Kobo Libra 2 User and calibre concerns

Hi everyone, I am a happy new user of Kobo libra 2, after being faithful user of a Sony PRS T3 reader for many years (dead...)

I have a bast collection of ebooks that normally i keep in Dropbox and handle through Calibre.

With the epub (original format) what I normally do is modify the metadata as I like and then I had some standard preferences for my Sony ereader that gave me an standard output for my collection.

Now I am trying to get the same results with my new reader before sending the ebooks to my new kobo

It is better to keep going with epub format or there is any format that addapts better to kobo? (just to notice that normally original format is epub 95% of the times...)

I just realized on the first ebooks i sent to my new kobo that page number appears in text format on the right side of the screen randomly, any idea why this is happening?

The original file format before transforming a file onto calibre i have it settle to predermined (as most of the files are epub), do you think the output preferred format with my kobo libra 2 should i set it to electronic ink generic high definition device as I realized the kobo output on calibre is settle to 736x510 devices and the libra 2 is 1264x1680 and 300ppp?

Thanks for your time !
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Old 09-23-2023, 12:37 PM   #2
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For the output profile select "tablet", that leaves the images unchanged.

The numbers on the right side are Adobe page numbers. They can be disabled in the reader settings.

If you want to zoom in on the images, you had better use the kepub format instead of epub. The fastest way is to use the KoboTouch Extended Driver for that; that's a calibre plugin. It will convert your epubs to kepub on the fly when sending them to your Kobo.
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Old 09-23-2023, 02:03 PM   #3
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Though some ebooks as epub change image size as you change the font size on the GUI. Or else this is a change I didn't notice before.
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Old 09-24-2023, 12:04 AM   #4
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Quote:
Originally Posted by mmc_meneses View Post
I just realized on the first ebooks i sent to my new kobo that page number appears in text format on the right side of the screen randomly, any idea why this is happening?
This is not random. What is happening is that while the page size is fixed, the number of screens needed to display that page is variable. Depending on font size, line spacing etc. So it takes a number of screens to display a page. The page number is displayed on the last screen of the page.
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Old 09-24-2023, 03:07 AM   #5
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This is not random. What is happening is that while the page size is fixed, the number of screens needed to display that page is variable. Depending on font size, line spacing etc. So it takes a number of screens to display a page. The page number is displayed on the last screen of the page.
I would add that if you want the page numbers not to be fixed, but 1 screen = 1 page, then you should use the kepub format. The drawback is that the overall page count will change when you change the font size, margins and so on.
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Old 09-24-2023, 08:37 AM   #6
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I would add that if you want the page numbers not to be fixed, but 1 screen = 1 page, then you should use the kepub format. The drawback is that the overall page count will change when you change the font size, margins and so on.
KePub is not doing 1 to 1 for page numbers. IT does it mostly, but not completely.

But ePub (RMDK used to display ePub) has better typesetting and will look better.
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Old 09-24-2023, 08:44 AM   #7
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But ePub (RMDK used to display ePub) has better typesetting and will look better.
Except for the widows and orphans issue, which can leave a large empty space at the bottom of the page. (Yes, there are ways around it - patching, editing the css and the Kobo conf. file and so on, but a new user may not be eager to dive into all this).

I'm not against epubs, I do read epubs exclusively on my Libra 2 (and kepubs on my Sage). Both formats have their pros and cons, so it's up to the OP to decide which they like better.
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Old 09-24-2023, 08:50 AM   #8
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I think i'll stick to epub as i think is much easier to use calibre for everything even to send the files to the reader...and calibre doesn't support kepub.

Thanks for the advices
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Old 09-24-2023, 08:53 AM   #9
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Originally Posted by mmc_meneses View Post
I think i'll stick to epub as i think is much easier to use calibre for everything even to send the files to the reader...and calibre doesn't support kepub.
You don't need kepubs in Calibre to use them on your Kobo. You only need the KoboTouch Extended Driver. Your library will still have epubs; kepubs will only be on your reader.
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Old 09-24-2023, 03:02 PM   #10
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You don't need kepubs in Calibre to use them on your Kobo. You only need the KoboTouch Extended Driver. Your library will still have epubs; kepubs will only be on your reader.
But by default, KePub has no kerning, no ligatures, large spaces, no hyphenation, and sometimes funny spacing.
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Old 09-24-2023, 03:12 PM   #11
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But by default, KePub has no kerning, no ligatures, large spaces, no hyphenation, and sometimes funny spacing.
Yeah, but we should let the OP compare both and decide for themselves.
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Old 09-24-2023, 03:14 PM   #12
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Quote:
Originally Posted by mmc_meneses View Post
I think i'll stick to epub as i think is much easier to use calibre for everything even to send the files to the reader...and calibre doesn't support kepub.

Thanks for the advices
If you do want to stick with ePub, here are a few tricks/tips to help ePub look better. I suggest you install Notepad++ to be sure of the line endings being correct when editing the config file on your Kobo,

This gets rid of widows ad orphans and makes the screen more uniform. It does look better.
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There is an option in Kobo eReader.conf (.kobo/kobo) on a Kobo that will ignore widows/orphans with epubs. This can be overridden in the CSS. But if you remove all widows and orphans from CSS or set them to 1, this should work.

Code:
[Reading]
readingAdobeOrphans=1
readingAdobeWidows=1

Another tip is the default hyphenation dictionary is not well configured. I've created come better hyphenation dictionaries. The directions on how to install are in the first post of the thread where the dictionaries are. The URL is https://www.mobileread.com/forums/sh...d.php?t=252405
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Old 09-25-2023, 12:54 AM   #13
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This gets rid of widows ad orphans and makes the screen more uniform. It does look better.
Brilliant! This solves a problem that's been bugging me for ages but wasn't quite annoying enough to do anything about.
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