[GUI Plugin] Kobo Utilities - Page 30

Terisa de morgan · 09-07-2025, 03:23 AM

Quote:

Originally Posted by Stikerr

After enabling columns, new comments have not appeared.
I haven't been able to make them appear again at all. I tried leaving the columns blank on the addon config menu, and then enabled syncs on connection to device. Connecting the device did prompt me to update the data, but doing so did not affect the comments.

Maybe it only happens if both Calibre & the plugin are freshly installed, and the user doesn't touch the column config ever before doing a sync? I've no idea. It's just a mysterious thing that happened once it seems.

I think you're right, it sounds more as an unitialized thing.

Majutsushi · 09-09-2025, 03:34 AM

Changes in this release:

Fixed the config dialog not saving individual device backup options correctly

Majutsushi · 09-09-2025, 03:49 AM

I've been trying to investigate the issue where using the "Update ToC" feature sometimes causes a "unique constraint failed" error, but so far I have not been able to reproduce it. @ownedbycats gave me some pointers about the EpubMerge and FanFicFare plugins, but even when experimenting with them a bit I've been unsuccessful, so clearly I'm missing something.

I'm assuming that the basic reproduction steps required are these:

Send version 1 of a book to a device so it gets imported
Send version 2 of the book to the device
Open the "Update ToC" dialog and click on "Update ToC" button

It would be really helpful if someone could provide the relevant two versions of a book and confirm that the above steps reproduce the issue with the provided book. Thanks!

DNSB · 09-09-2025, 03:49 PM

Did you have Do not treat replacements as new books selected on the 2nd tab of the KoboTouch driver configuration dialog when testing? If not, the version 2 would replace the version 1 including the ToC.

Majutsushi · 09-10-2025, 01:35 AM

Yes I do have that selected, I'm assuming that's what people who experience the issue use as well. Otherwise as you say everything would be replaced and updating the ToC wouldn't do anything.

ownedbycats · 09-10-2025, 04:41 AM

Does the ToC actually need updating? Normally I only update ToC when the fic updates. Adding an additional ToC entry should emulate that.

theducks · 09-10-2025, 05:44 AM

Quote:

Originally Posted by ownedbycats

Does the ToC actually need updating? Normally I only update ToC when the fic updates. Adding an additional ToC entry should emulate that.

The TOC needs update any time you change the file structure (files and or names) of the replacement. I frequently combine false splits (Velum use of H tags

). If you don't fix the TOC a page turn may fall of the edge because the section no longer exists),

Majutsushi · Yesterday, 01:45 AM

I was finally able to reproduce the issue by enabling the "Flatten table of contents" option in the EpubMerge plugin. So I should be able to investigate this now.

serpyke · Yesterday, 05:42 AM

Hello. I have used the plugin to change the covers of books on a Kobo Libra Colour, but although the image dimensions are correct in the Calibre library, when I hover the mouse cursor over the book covers on the device, the resolution displayed is much lower. For example, a cover that I have at 780x1200 pixels is approximately 500x800 in the book. I have tried deleting the book covers from the Kobo and sending the covers using the plugin, but there is no way to maintain the resolution. Any suggestions? Thank you.

DNSB · Yesterday, 07:33 PM

You might want to remember that your Kobo stores the covers with 3 different resolutions plus the cover image stored in the ebook. Since your Libra Colour does not have a mouse, I'm assuming that you are looking at the book covers using calibre.

If I look at the .kobo-images directory on my KLC, each book has 3 images which for me show as shown in the image below (I renamed the files to *.jpg). These files are generated from the cover image during the import process. When I look at the details in device view of a book, I see the resolution corresponding to the N3_LIBRARY_FULL.parsed image.

serpyke · Today, 09:11 AM

Ah, thank you very much, DNSB. I see that I have those files in folders (with numbers instead of book titles) and that by adding the .jpg extension I can check what you say, and indeed everything seems to be correct. I did check the resolution in Calibre, in the Device section... and I don't know why it's reduced there, but I'm not worried about it anymore. Thanks again.

chaley · Today, 09:17 AM

Quote:

Originally Posted by serpyke

I did check the resolution in Calibre, in the Device section... and I don't know why it's reduced there, but I'm not worried about it anymore. Thanks again.

Calibre shows the cover from inside the ebook. Changing the cover on the device doesn't affect what's in the book.

serpyke · Today, 10:41 AM

I may be mistaken, but if I used the plugin to delete the book covers from the device and then again to send the covers from my library to the books on the device... shouldn't the covers inside the books have been changed as well as those in the directories referenced by DNSB? All the books I put on the Kobo had covers measuring at least 800 x 1200 pixels, and in Calibre's preview of the books on the device, those covers are displayed as just over 300 x 500; so I assumed that it was showing one of the files in that directories and not the covers inside the books. Sorry if I'm mixing things up, but I'm not really sure how it works, to be honest.

chaley · Today, 10:56 AM

Quote:

Originally Posted by serpyke

I may be mistaken, but if I used the plugin to delete the book covers from the device and then again to send the covers from my library to the books on the device... shouldn't the covers inside the books have been changed as well as those in the directories referenced by DNSB?

No. The cover inside the book doesn't change when you change the cover in the calibre library or send a cover to the device using kobo utilities. If you change the cover in calibre (edit metadata etc) and want the cover to change in the book then you must use polish, embed metadata, modify epub plugin, the calibre editor, or perhaps other methods.

For example, the following sequence does not change the cover in the book.

Add the book to calibre.
Send the book to the device.
Update the cover in calibre.
Send the new cover using kobo utilities.

The cover inside the book is normally updated to the cover in calibre's library when you send the book to the device. If you want the cover inside the book on the device to change then you must resend the book after updating the cover in the calibre library.

serpyke · Today, 11:55 AM

Just before sending my books to Kobo, I replaced the low-resolution covers with higher-resolution ones and clicked on “embed metadata”; that's why I don't understand the low-resolution images displayed in Calibre; I must have done something wrong then.

Quote:

Originally Posted by chaley

If you want the cover inside the book on the device to change then you must resend the book after updating the cover in the calibre library.

But then, would I lose my reading statistics if I delete a book from Kobo and then send it again, either original or sideloaded?

Thanks for the help.

09-09-2025, 03:34 AM	#437
Majutsushi Zealot Posts: 115 Karma: 10128 Join Date: Aug 2023 Location: New Zealand Device: Kobo Clara HD, Kobo Libra Colour	KoboUtilities v2.24.3 Changes in this release: Fixed the config dialog not saving individual device backup options correctly

09-09-2025, 03:49 AM	#438
Majutsushi Zealot Posts: 115 Karma: 10128 Join Date: Aug 2023 Location: New Zealand Device: Kobo Clara HD, Kobo Libra Colour	I've been trying to investigate the issue where using the "Update ToC" feature sometimes causes a "unique constraint failed" error, but so far I have not been able to reproduce it. @ownedbycats gave me some pointers about the EpubMerge and FanFicFare plugins, but even when experimenting with them a bit I've been unsuccessful, so clearly I'm missing something. I'm assuming that the basic reproduction steps required are these: Send version 1 of a book to a device so it gets imported Send version 2 of the book to the device Open the "Update ToC" dialog and click on "Update ToC" button It would be really helpful if someone could provide the relevant two versions of a book and confirm that the above steps reproduce the issue with the provided book. Thanks!

Yesterday, 07:33 PM	#445
DNSB Bibliophagist Posts: 47,343 Karma: 171313058 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos	You might want to remember that your Kobo stores the covers with 3 different resolutions plus the cover image stored in the ebook. Since your Libra Colour does not have a mouse, I'm assuming that you are looking at the book covers using calibre. If I look at the .kobo-images directory on my KLC, each book has 3 images which for me show as shown in the image below (I renamed the files to *.jpg). These files are generated from the cover image during the import process. When I look at the details in device view of a book, I see the resolution corresponding to the N3_LIBRARY_FULL.parsed image. Attached Thumbnails

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[GUI Plugin] Kobo Utilities	davidfor	Plugins	3216	02-08-2025 04:23 AM
[GUI Plugin] Noosfere_util, a companion plugin to noosfere DB	lrpirlet	Plugins	2	08-18-2022 03:15 PM
[GUI Plugin] Save Virtual Libraries To Column (GUI)	chaley	Plugins	14	04-04-2021 05:25 AM
Kobo Utilities Plugin Question	nikev	Kobo Reader	10	09-25-2018 11:55 PM

09-09-2025, 03:49 PM	#439
DNSB Bibliophagist Posts: 47,343 Karma: 171313058 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos	Did you have Do not treat replacements as new books selected on the 2nd tab of the KoboTouch driver configuration dialog when testing? If not, the version 2 would replace the version 1 including the ToC.

09-10-2025, 01:35 AM	#440
Majutsushi Zealot Posts: 115 Karma: 10128 Join Date: Aug 2023 Location: New Zealand Device: Kobo Clara HD, Kobo Libra Colour	Yes I do have that selected, I'm assuming that's what people who experience the issue use as well. Otherwise as you say everything would be replaced and updating the ToC wouldn't do anything.

09-10-2025, 04:41 AM	#441
ownedbycats Custom User Title Posts: 11,153 Karma: 77304081 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	Does the ToC actually need updating? Normally I only update ToC when the fic updates. Adding an additional ToC entry should emulate that.

Yesterday, 01:45 AM	#443
Majutsushi Zealot Posts: 115 Karma: 10128 Join Date: Aug 2023 Location: New Zealand Device: Kobo Clara HD, Kobo Libra Colour	I was finally able to reproduce the issue by enabling the "Flatten table of contents" option in the EpubMerge plugin. So I should be able to investigate this now.

Yesterday, 05:42 AM	#444
serpyke Junior Member Posts: 7 Karma: 10 Join Date: Mar 2025 Device: Kobo Libra Colour	Hello. I have used the plugin to change the covers of books on a Kobo Libra Colour, but although the image dimensions are correct in the Calibre library, when I hover the mouse cursor over the book covers on the device, the resolution displayed is much lower. For example, a cover that I have at 780x1200 pixels is approximately 500x800 in the book. I have tried deleting the book covers from the Kobo and sending the covers using the plugin, but there is no way to maintain the resolution. Any suggestions? Thank you.

Today, 09:11 AM	#446
serpyke Junior Member Posts: 7 Karma: 10 Join Date: Mar 2025 Device: Kobo Libra Colour	Ah, thank you very much, DNSB. I see that I have those files in folders (with numbers instead of book titles) and that by adding the .jpg extension I can check what you say, and indeed everything seems to be correct. I did check the resolution in Calibre, in the Device section... and I don't know why it's reduced there, but I'm not worried about it anymore. Thanks again.

Today, 10:41 AM	#448
serpyke Junior Member Posts: 7 Karma: 10 Join Date: Mar 2025 Device: Kobo Libra Colour	I may be mistaken, but if I used the plugin to delete the book covers from the device and then again to send the covers from my library to the books on the device... shouldn't the covers inside the books have been changed as well as those in the directories referenced by DNSB? All the books I put on the Kobo had covers measuring at least 800 x 1200 pixels, and in Calibre's preview of the books on the device, those covers are displayed as just over 300 x 500; so I assumed that it was showing one of the files in that directories and not the covers inside the books. Sorry if I'm mixing things up, but I'm not really sure how it works, to be honest.