Transferring kepub with Calibre

stutz · 03-16-2023, 06:33 AM

I converted a book from epub to kepub with calibre, and it works well. However, when I transfer it to my reader with calibre, a different file (~10% bigger and with a broken table of content) gets uploaded to the reader.
Copying the file normally through the filesystem works well, it's only when I try to upload it with calibre that the file gets broken like that. I think calibre re-converts the epub to kepub with different options before transferring it to the reader, but I don't know how to instruct it to NOT do that.

Rid · 03-16-2023, 06:40 AM

Maybe try using Calibre Portable without changing any of the settings to see how it goes with transferring the converted kepub to your ereader?

stutz · 03-16-2023, 07:21 AM

Ok, I think I fixed it. The "KePub Metadata Writer" extension was what caused the file to be inflated. Disabling it fixed that.
The broken table of content probably had to do with the kobo database not updating correctly. I had to remove the ebook from the reader, disconnect it so that it updated the database, then load the ebook again for the TOC to show up correctly.

Sirtel · 03-16-2023, 08:23 AM

Alternately, you can use the KoboTouch Extended Driver to send a kepub to your Kobo. No need to convert anything.

03-16-2023, 06:33 AM	#1
stutz Junior Member Posts: 9 Karma: 10 Join Date: Mar 2023 Device: kobo clara hd	Transferring kepub with Calibre I converted a book from epub to kepub with calibre, and it works well. However, when I transfer it to my reader with calibre, a different file (~10% bigger and with a broken table of content) gets uploaded to the reader. Copying the file normally through the filesystem works well, it's only when I try to upload it with calibre that the file gets broken like that. I think calibre re-converts the epub to kepub with different options before transferring it to the reader, but I don't know how to instruct it to NOT do that.

03-16-2023, 06:40 AM	#2
Rid Addict Posts: 205 Karma: 20980 Join Date: Oct 2020 Device: Kobo Aura One, Aura HD (R.I.P.) :(	Maybe try using Calibre Portable without changing any of the settings to see how it goes with transferring the converted kepub to your ereader? Last edited by Rid; 03-16-2023 at 06:43 AM.

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03-16-2023, 07:21 AM	#3
stutz Junior Member Posts: 9 Karma: 10 Join Date: Mar 2023 Device: kobo clara hd	Ok, I think I fixed it. The "KePub Metadata Writer" extension was what caused the file to be inflated. Disabling it fixed that. The broken table of content probably had to do with the kobo database not updating correctly. I had to remove the ebook from the reader, disconnect it so that it updated the database, then load the ebook again for the TOC to show up correctly.

03-16-2023, 08:23 AM	#4
Sirtel Grand Sorcerer Posts: 12,088 Karma: 233181968 Join Date: Jan 2014 Location: Estonia Device: Kobo Sage & Libra 2	Alternately, you can use the KoboTouch Extended Driver to send a kepub to your Kobo. No need to convert anything.

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