[Conversion Output] KFX Output

[Killam42]

Originally Posted by jhowell

That won't work, but it shouldn't just run forever. See Converting Comics and Manga in the first post in this thread for more information.



Have you tried the version of Frankenstein I mentioned earlier? If that fails to convert in a reasonable time then I suggest using the timeout option I mentioned in my previous post.



I assume that you mean that this problem happens when running calibre under regular MacOS and also when running calibre under parallels. So you have both Kindle Previewer for Mac and Kindle Previewer for Windows both installed on your system? I am not very familiar with Macs so I don't know if there might be a problem with doing that.

I did try to the Frankenstien file and it did go through, and I did try to comic again and finally got an error and it was missing the KPF, and I haven't looked at the comic section yet. But I'm guessing I need to convert my CBZ to a KPF file.

[jhowell]

Version 2.1.0 - 25 Jul 2023

Add a cover entry to the landmarks metadata for fixed layout books produced from KPF format. This fixes a non-working "Cover" entry appearing in the table of contents on Kindle devices.

[nguoi doc sach]

I dont know if this is really a bug.

When I use this plugin to convert a Vietnamese book from epub, azw3, mobi into kfx files, it show that it has an internal error. Then I delete Vietnamse language in calibre edit metadata, and still haven't embed that in books by embed metadata, I convert it just fine. I dont know what is wrong with that cause I don't change anything on that book, I just delete the language 'Vie" or change to 'Eng' or something else.

I think maybe this is a problem with calibre.

[jhowell]

Originally Posted by nguoi doc sach

When I use this plugin to convert a Vietnamese book from epub, azw3, mobi into kfx files, it show that it has an internal error. Then I delete Vietnamse language in calibre edit metadata, and still haven't embed that in books by embed metadata, I convert it just fine. I dont know what is wrong with that cause I don't change anything on that book, I just delete the language 'Vie" or change to 'Eng' or something else.

Blocking some languages is a "feature" of the Kindle Previewer that this plugin uses as part of the conversion process. Only languages that are officially supported by Amazon for use on Kindles will convert.

As you found, that error can be worked around by changing the language of the book to something that is supported. Whether or not the resulting book will render properly can be hit or miss depending on the characteristics of the language and and whether any special fonts needed for it.

The next release of this plugin will automatically change a language code of "vi" to one that will convert so that you do not have to do it manually. (Kindles use two-letter ISO 639-1 language codes.)

[jadenquest]

I could not get the converted kfx file to have pop-up footnotes on my Kindle (it simply redirects to the footnotes page).
The same epub file converted to azw3 seems to be able to do it, however.
The kfx generated from the azw3 can not pop up either.

Thanks in advance!

The epub I used is this one.

[jhowell]

Originally Posted by jadenquest

I could not get the converted kfx file to have pop-up footnotes on my Kindle (it simply redirects to the footnotes page).
The same epub file converted to azw3 seems to be able to do it, however.
The kfx generated from the azw3 can not pop up either.

The popup footnote feature only functions when the HTML formatting is recognized as being a footnote by the Kindle reading software that renders the book. There is no specification by Amazon of precisely what coding will be recognized as a footnote. Generally it requires forward and back links between the main text and the footnote with the footnote content being a single paragraph, however some variations are acceptable. This is handled inconsistently across different Kindle formats.

Unfortunately there is no automatic fix that can be done to make this function. If you want popup footnotes you will need to edit the HTML coding in some books. It might take several attempts using trial and error depending on the book.

Originally Posted by jadenquest

The epub I used is this one.

I took a look at the first footnote in the book you mentioned. The footnote is coded as a <p> element within a <div>. Changing the inner <p> to a <span> and the outer <div> to a <p> caused the footnote to be handled properly in KFX format.

[jhowell]

Version 2.2.0 - 07 Aug 2023

Allow conversion of Vietnamese language books.

Fix error when processing the cover of fixed layout books converted from KPF format. (Fixes "YJFragmentList item is missing: '$389'")

[yparitcher]

@jhowell

Thanks for this useful plugin,
Can you please add hebrew "he" to KPR_UNSUPPORTED_LANGUAGES ?

kindle previewer crashes with an internal error when encountering books with a hebrew language code, however the hebrew text works fine.

I added it locally and it is working fine.

Thanks

[jadenquest]

Originally Posted by jhowell

I took a look at the first footnote in the book you mentioned. The footnote is coded as a <p> element within a <div>. Changing the inner <p> to a <span> and the outer <div> to a <p> caused the footnote to be handled properly in KFX format.

Thank you so much, this worked!! If anyone stumbled upon this, I used the format HTML in Tools to substitute the p to span; and I used find and replace in highlighted text to replace the div with p.

[jhowell]

Originally Posted by yparitcher

Can you please add hebrew "he" to KPR_UNSUPPORTED_LANGUAGES ?

Yes. That change will be in the next release of this plugin.

[NeoGenesisX]

Originally Posted by jhowell

Yes. That change will be in the next release of this plugin.

Thank you!, the plugin works wonderfully.

Could you kindly add "th" for Thai language to KPR_UNSUPPORTED_LANGUAGES as well?

Thank you!

[jhowell]

Originally Posted by NeoGenesisX

Could you kindly add "th" for Thai language to KPR_UNSUPPORTED_LANGUAGES as well?

Yes. I will add that also. It will be a few weeks as I am currently traveling.

[Flaviocc]

Hi ! Tks for the plugin.

I have 2 questions:

On few books I cant convert when using this (extra css option):

html {
margin-right: -30px;
margin-left: -30px;
break-inside: avoid !important;
}

This is the error message: kfx conversion calibre Margins with negative values are not currently supported with Tables in Enhanced Typesetting.

And the same book when converted they don't have hyphens (it's hard form me read without hyphens...)

Tks.

[willemml]

Hello, I have used this plugin to convert KPF files to KFX files. The KPF files were created using Kindle Create from random PDF files I have. I then used this in an AppleScript to automate sending PDFs to my Kindle Scribe so that I can write on them directly. This is very hacky but it works for now until there is a smoother way of getting PDFs onto the scribe so they can be written on, without contacting Amazon (this works fully offline on my mac, the only requirements are that the Kindle Create app is installed, and calibre is installed with the KFX Output plugin.)
If a Kindle is connected the resulting KFX file is automatically copied to it.

Link to the GitHub repo with relevant files: https://github.com/willemml/kindle_scribe_pdfsender

Again, this is very hacky and only works on macOS, but I thought someone might find it useful anyways.

[nabsltd]

Originally Posted by Flaviocc

On few books I cant convert when using this (extra css option):

html {
margin-right: -30px;
margin-left: -30px;
break-inside: avoid !important;
}

This is the error message: kfx conversion calibre Margins with negative values are not currently supported with Tables in Enhanced Typesetting.

There must be something other than the margins that are the issue.

Attached is a scrambled ePub (since it is covered by copyright) of a short story that has almost exactly the same formatting:

html {
	margin-left: -5.5%;
	margin-right: -5.5%;
	break-inside: avoid;
}

It converts just fine to KFX. Download it and test. By opening the EPUB with the Kindle Previewer software, you can check for conversion problems while eliminating Calibre and the plugin from the chain.

Then, you can test using Calibre to convert. Note that I do not use any "extra CSS" option...I insert the CSS into the original file. I also disable pretty much every option that does anything to alter the original CSS.