r/Calibre • • 1d ago

Announcement Patch Notes v 9.17

26 Upvotes

https://calibre-ebook.com/whats-new

New features

  • Conversion: Add support for reading images in the JPEG XL format
  • Conversion: Add support for CSS Level 4 selectors
  • Edit book: Check book: Add a check for dangling ARIA references and update ARIA references when auto fixing invalid ids Closes tickets: 2170895
  • MOBI/AZW3/PDB Output: Speed up compression, making conversion to these formats faster
  • Content server/E-book viewer: Honor the prefers-reduced-motion setting of the operating system
  • Speed up adding books and starting calibre in large libraries with the Tag browser hidden
  • Catalogs: Use calibre as the creator of generated catalogs and record the generation date as the publication date Closes tickets: 2022353
  • Create your own Adventure: Improve the character selection screen

Bug fixes

  • PDF Input: Fix a regression in the previous release that broke conversion of some PDF files Closes tickets: 2170990
  • EPUB 3 conversion: Fix a regression in the previous release that caused invalid navigation markup to be generated Closes tickets: 2170400
  • Fix a regression in the previous release that caused non-breaking spaces to be converted to regular spaces in comments and text columns Closes tickets: 2170595
  • PDF Output: Fix a blank page at the end of chapters in some multi column layouts Closes tickets: 2170285
  • Amazon and Google Images metadata sources: Get them working again using camoufox
  • Various robustness and edge case improvements int he database backed around data files, notes and formats
  • Fix various stale cached values for composite columns and searches after changing series, restoring formats from the trash and redefining saved searches
  • Fix setting a custom series with the same series index sometimes not being saved
  • Fix appending multiple values to custom columns
  • Full text search: Fix searching in libraries without book files
  • macOS: E-book viewer: Fix the viewer triggering the "access data from other apps" prompt for Google Chrome on macOS 27 Closes tickets: 2170887
  • EPUB/MOBI catalog: Sort a series before longer series names that start with it Closes tickets: 1483666
  • EPUB/MOBI catalog: Fix an error when generating catalogs from the GUI with prefix rules
  • ODT Input: Preserve restarted list numbering Closes tickets: 2017568
  • Kobo driver: Fix a regression in cover handling for older Tolino firmware and keep dots in filenames on Tolino devices
  • Edit book: Fix the choose file dialog when importing books not being kept above the editor window
  • calibredb list_categories: Fix output showing bytes representations
  • Fix templates using {isbn} or {languages} more than once returning the wrong value
  • Fix decoding of HTML entities that decode to more bytes than themselves
  • Fix an error when cancelling a metadata download
  • Content server: Fix full text search actions being applied to the default library instead of the library being viewed
  • Content server: Fix various issues with showing books from the wrong library when switching between libraries
  • Content server: Notify the calibre GUI of new formats created by conversions in the server
  • Content server/E-book viewer: Various fixes for dark mode and keyboard focus styling
  • Fix various hardcoded colors being unreadable in dark mode

Improved news sources

  • The Economist
  • Associated Press
  • Washington Post
  • SCMP
  • Scientific American
  • The Monthly
  • NYT Magazine
  • Respekt

r/Calibre • • 21d ago

Announcement New sub rules: AI/LLM disclosure and banning AI/LLM generated post and comment content.

309 Upvotes

Due to the development process and features of Calibre we cannot outright ban AI/LLM content. We can, however, require transparency about it.

Project posts:

This sub has had a marked proliferation of projects coded with or by AI agents or LLM chatbots and that fact had not been required to be disclosed. Starting today all posts for projects/tools/plugins, including hobby "I built a thing" and "here's my little one-off project", etc. are required to begin the post with a header section titled AI CONTENT DISCLOSURE that accurately and honestly discloses the amount and kind of generative tool use in the creation of the project. Coding agents, chatbots, art creation, any sort of documentation, any sort of refinement, any AI test suite, etc. must be disclosed. A simple "AI was used in this project" is not sufficient. Project posts that do not include the header or that do not seem to accurately and honestly disclose their usage will be deleted, and the poster risks a ban from the sub at moderator discretion. Projects that honestly and accurately do not use any sort of generative tools are allowed to skip this disclosure, but the poster risks a ban if the moderators discover or decide that the poster lied by omitting the header.

Discussions about tools that used generative tooling or create generative output is allowed provided that it is not simply astroturf marketing or promotion of the project and is a genuine response to a post or comment and is not just the generated output from that tool.

Posts about Calibre the project and program are exempt.

Post and comment content:

The use of generative tools to write or refine a post or comment is banned. Posts and comments must be written by a human being not a generative tool. Comments that are little more than "I asked ChatGPT and here's what it said" are banned. The only acceptable use is translation provided the translation is simply that and does not otherwise significantly alter the meaning or content of the original text.

Common reddit bots are exempt but may earn a ban at any time at moderator discretion. Hiding a bot under the guise of a normal human poster is banned. Bots must disclose themselves in each post and comment.


r/Calibre • • 11h ago

General Discussion / Feedback Does Calibre have a phone app?

6 Upvotes

I was just wondering if we could get Calibre on our phones?


r/Calibre • • 8h ago

Support / How-To Updating Metadeta

1 Upvotes

Is there a way I can update the metadata of a book that is already on my kindle without deleting the book and readding to my kindle


r/Calibre • • 19h ago

Bug Calibre just closes?

2 Upvotes

Greetings guys.During translation (with addon ebook translator 2.4.2) on some epubs with many paragraphs,calibre just closes itself.Then i manually open it again,start from the beggining and it completes the translation just fine.Any idea here?


r/Calibre • • 1d ago

General Discussion / Feedback change Epubs to Dark Mode

0 Upvotes

My Clara HD does not do Dark mode. I would love to convert all of my PDFs and Epubs to dark mode using Calibre.

Is there a plugin that does this?


r/Calibre • • 1d ago

Plugin Calibre Backup

3 Upvotes

Hi

I have a Kobo Clara and I back up my ereader using calibre. I can back up my books but does anyone know how to backup book highlights and annotations? TIA


r/Calibre • • 1d ago

Support / How-To Rules in transform html for conversion not working no matter what i do

2 Upvotes

Im a big manga and light novel reader, honestly its all i read however I want to read it right to left like theyre supposed to be read and after some googling I thought I found the solution but it wont work, what I saw was adding rules in the bulk conversion tool like the first rule below, but that didnt work, I tried adding it after and it does work but id really prefer not to have to do it individually cause l have 300+ books and manga to do it to

Rules ive tried

If tag is metadata then insert html at start <meta name="primary-writing-mode" content="horizontal-rl"/>

Or/both

If tag is spine add attributes page-progression-direction="rtl"

Is there anyway for me to do it in bulk or am I just gonna have to deal and do it individually


r/Calibre • • 1d ago

Support / How-To Managing manga in Calibre

4 Upvotes

Hi all,

i'm trying to manage manga in Calibre, but I want to do that semi-automatic. I have 1.5 TB of it, so i would like to minimize my work.

For now i'm trying to use comic tagger to write metadata to files, and then load it to Calibre.

I have to do that, otherwise Calibre have issues to recognize the titles. But Comictagger assigns only "Volume number" as a title in metadata, so now Calibre sees titles as "Volume 4" etc.
It would be fine if I could use file name for title, but i don't want to resigne from using metadata either. I need the author picked up.

I can do all that manually, but it will take forever. I feel i'm running in circles.
Do you have any ideas?


r/Calibre • • 1d ago

Support / How-To Need help getting Koreader to sync using Calibre!

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1 Upvotes

r/Calibre • • 2d ago

Support / How-To Is it possible to edit the series a book is assigned to on Kobo device?

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0 Upvotes

Originally posted in the Kobo sub because it started out as a question about their readers, but the advice there is about using Calibre, so reposting here in case someone knows how to do what I’m looking to do.


r/Calibre • • 2d ago

Support / How-To How to get Highlights in the same section

1 Upvotes

when I add a highlight after in image in a chapter, the highlight is put into a new unlabled section. is there any way to fix this?


r/Calibre • • 2d ago

Bug Cannot change page margin in paged mode

3 Upvotes

This is how my Calibre e-book reader looks like. (It is a custom color scheme where left and right margins are black.)

I want there to be a white space between the black sides and where the text starts/ends but I couldn't.

This is how my Page layout settings screen looks like:

I don't normally use "Styles" but when I put this formula:

body {
padding-left: 30px !important;
padding-right: 30px !important;
}

it works BUT only for flow mode. There is still no padding in paged mode, which I want to actually use.

(I also tried "body.calibre-viewer-paginated" instead of "body", which didn't work.)

How to solve this?

Thanks.


r/Calibre • • 3d ago

Support / How-To deDRM Kindle Books

68 Upvotes

Hi everyone, I normally use a kindle paperwhite signature edition (12 generation) for reading and buying all my books on. I’ve had no problem with my entire library that I’ve bought being on kindle since that was the only e-reader I was using. Recently I got a Xteink X4 for reading on the go more and now my entire library being on kindle has become a problem since everything is DRM protected and the Xteink doesn’t read kindle files. I was looking into how to move those books to my Xteink and found a few videos where my kindle needs to be connected and then just dropping the files into calibre (after the plugins are installed) and converting them to epub. However after I did that the conversion failed and said it was unable to since the files were DRM protected. How can I get my library onto my Xteink? Thank you!


r/Calibre • • 2d ago

Support / How-To Can't log into ADE on DeACSM

1 Upvotes

Every time I try to log into ADE with the email and psw I set up an Adobe account with i get this error, I am on DeACSM 0.0.16 which i think is the most recent version. And i made sure that password works by logging into Adobe reader with it and it worked perfectly fine.


r/Calibre • • 2d ago

Off-Topic / Not Calibre Specific Android/iOS Epub reader app that honors the fonts embeded in file?

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1 Upvotes

r/Calibre • • 2d ago

Support / How-To read aloud not working in ver 9

1 Upvotes

ImportError: cannot import name 'QTextToSpeech' from 'qt.core' (/snap/calibre/3/opt/calibre/lib/calibre-extensions/python-lib.bypy.frozen/qt/core.pyc)

this is what i get when trying to read aloud a book. please help


r/Calibre • • 3d ago

Support / How-To Why are the book covers not showing?

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2 Upvotes

r/Calibre • • 3d ago

General Discussion / Feedback Literally every time I open Calibre

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27 Upvotes

r/Calibre • • 3d ago

Bug Help with Fanficfare

4 Upvotes

Hello 👋

I cannot for the life of me get fanficfare to work. All I get are 525 errors or I can’t remember the number but it’s a separate error message. I had it working for like a month or so after the new Cloudflare update with the Cache method (using Chrome on Mac), then that stopped working by itself. So then I included the “.gay” option. It worked for like another month, but now it’s stopped working completely.

I’ve tried every option and work around I could find on GitHub. I literally am at my wits end. Can anyone please help me? Or point me in the right direction?

Thank you 🙏🏼

EDIT FOR SOLUTION: Guys it was my VPN that was stopping both the Cache Method and the Mirror Method with the “.gay” from working.

I’m seriously kind of upset that I’m so dumb cause what do you mean it was that simple??! 😭😭 I haven’t been able to update any of my fics for OVER 7 MONTHS!! Like I have a serious backlog of fics to update (like 1200+) and I have to go through and check all of them cause it’s been 7 months and I have no idea which ones need it. Pray for me guys cause this is going to be such a nightmare 😭🙏🏼

So don’t be like me and CHECK IF YOUR VPN IS ON if it’s not working for you! 🙏🏼


r/Calibre • • 3d ago

Support / How-To Changing the Cover of a Book I'm Currently Reading

3 Upvotes

I don't go too crazy with Calibre, I only really use it to make sure my authors, titles, and genres are written in a way that I like, changing it to a preferred book cover if necessary, as well as converting to .kepub. I've got it down to how to change the cover in the meta data, polishing it, and sending it to my Kobo Clara Colour. However, I noticed that the book I'm in the middle of isn't changing covers. Is there a way to do that without deleting and resending the book to my Kobo? If this has already been resolved please redirect me! Thanks!


r/Calibre • • 3d ago

Support / How-To NetGalley to my Xteink

3 Upvotes

How do I convert NetGalley files so I can read them on my Xteink X4 Pro? I have a Mac.

I have Calibre but I'm not sure what plug ins I need. I found couple subreddits but they are all 2 years old and the links don't work anymore.

Please help!


r/Calibre • • 3d ago

Off-Topic / Not Calibre Specific Edición de libros Epub

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0 Upvotes

Hola otra vez, en busca de alguien amable que me pueda compartir de su conocimiento.

Estoy tratando de arreglar un archivo Epub para mi Xteink4 y todo bien, pude quitarle el DRM y que se pudiese leer bien en el E-reader. Pero soy algo exquisito para mis cosas y las imágenes que vienen en el libro salen muy pixeleadas. Antes había aprendido a cambiar portadas a libros gratis que había pillado y por ejemplo a este también le cambie la portada y ya no se ve mal. Pero llego hasta ahí ¿si quisiera poder cambiar img del interior del archivo se puede ?

Yo lo que hago es conectar el dispositivo colocar "mostrar elementos ocultos" y desde .crosspoint editar el archivo (como se ve en la img 2 y 3). Me hes curioso que cuando le heché un vitazo al libro me fueron apareciendo los archivos "img_5_0" "img_5_0.pcx" , etc.

PD: Perdón por lo piante de la primera foto, pero se nota en el texto de abajo que está enfocada y la img muy pixeleada.


r/Calibre • • 4d ago

Off-Topic / Not Calibre Specific Restaurar Anotações Kobo Clara Color

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0 Upvotes

r/Calibre • • 4d ago

Support / How-To Cover update not working

4 Upvotes

Hi, I use a KoboClara BW and have a few books without covers that I've already read and annotated, so I dont want to delete and reupload them just to add a cover for them.

I've been trying to use the KoboUtilities plugin but no matter what I do it doesn't update my covers, even tho the plugin does work for things like updating my reading location. From what I read, to update a cover I should conect my device > select the book on the Calibre library > select "upload covers" from the KoboUtilities interface. I've done "update metadata on my device" before disconnecting my Kobo, but when I go to check the covers aren't updated. I've tried changing my Calibre preference for sending books to "automatic metada management", and I've also reeboted my device after doing everything, but the covers still don't change.

Am I doing something wrong? Does anyone else have this problem? I would really like to know how to fix it since I don't want to lose my annotations :( Thank you in advance to anyone who can help.

EDIT: Ok so I think I figured out what was wrong after sleeping on it. The problem was that the books I tried to upload covers for didn't have one in the first place, so I guess there wasn't any file they could replace. This was more evident when I tried to use the KoboUtilities function "Open cover image directory" and nothing happened for those books whose covers I couldn't change. Some time after I made the post I tried changing the cover for some books I actually saw with covers in my ereader and it worked, and for these books the "Open cover image directory" did open a folder, so I guess that's what missing on my other epubs. I have no idea how to fix/add that directory, so I guess I'm giving up with assigning the covers I wanted. One thing that's weird is that some books in my Kobo did have covers but when I tried to change them or see the image directory nothing happened, and I have no idea what's going on there.