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Old 12-21-2023, 03:48 PM   #1
tomsem
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Convert AZW3 to CBR/CBZ?

I have a new Pocketbook InkBook Color 3 and would like to try out some comics on it and see what works best. I can covert to ePub or PDF, but what about CBR/CBZ? I do not see any output options or plugins that offer this directly.
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Old 12-21-2023, 04:46 PM   #2
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You can try the Kindle Comic Converter ( see the Kindle Comic Converter - Convert comics/manga to MOBI/EPUB thread. I believe that the current version can output optimized CBZ files. You can check ciromattia's GitHub site at Kindle Comic Converter for downloads and help.
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Old 12-22-2023, 01:43 AM   #3
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You can try the Kindle Comic Converter ( see the Kindle Comic Converter - Convert comics/manga to MOBI/EPUB thread. I believe that the current version can output optimized CBZ files. You can check ciromattia's GitHub site at Kindle Comic Converter for downloads and help.
KCC expects you to start with a stack of images. I don't have that, yet. I have a fixed layout KF8 file. The images in there will not require any optimizing or resizing.

Calibre will convert AZW3 to PDF, or FXL ePub. I would like a CBZ/CBR as well, so I can figure out which works best with PocketBook software.

But it appears there is no calibre/plugin feature to extract the images from the AZW3 file (or ePub etc) and output CBZ from them. It's not difficult to do this manually (e.g. using calibre ebook-edit), so not clear why calibre or some plugin could not do this as well.

I just wanted to verify that I was not missing anything.
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Old 12-22-2023, 12:00 PM   #4
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Can you extract the images using the KindleUnpack plugin for calibre and then use KCC?
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Old 12-23-2023, 05:01 PM   #5
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Can you extract the images using the KindleUnpack plugin for calibre and then use KCC?
Thanks, KindleUnpack plugin helps with getting a folder with the images quickly.

After setting appropriate options, KCC might be useful, especially for creating CBZ metadata (need to confirm PocketBook supports it).

PB reader would not open the ePub file that KindleUnpack plugin created. Haven't investigated the cause. I assume it is doing something different than what calibre does to convert to ePub.

PB reader UI looks very similar for both CBZ and PDF, but would like to get ePub for comparison as well.

But calibre will not catalog CBZ, unfortunately (AFAICT). That alone may make PDF a better target, and it will also work on Kindle platform (converted to Print Replica).

At any rate, it's fun to have some color on an eInk device.

Last edited by tomsem; 12-24-2023 at 02:15 AM.
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Old 01-11-2024, 01:10 AM   #6
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Convert it to zip. Then simply rename extension to cbz. Cbz is simply a zip file.
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