Questions tagged [calibre]

Open-source ebook library management application for Windows, macOS, and Linux.

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Trying to repair unresolved hyperlinks in TOCs that crop up from time to time in conversions

I am converting some of my eBooks to EPUB and using Amazon's Preview app to confirm they're ok to send to them via the email to Kindle collection method. Commonly my most reoccurring error has to do ...
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How to display an image at two different sizes in Calibre?

Recently I've taken up the hobby of converting long-forgotten, never-reprinted pulp novels into eBook format, via the Calibre editor. So far I've found the learning curve to not be too steep, except ...
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How to solve the issue of two cover images being created when converting from epub2 to epub3 using pandoc?

Essentially, what happens is that when I convert from epub 2 epub 3 using pandoc by using the following line: pandoc input_file.epub -t epub3 -o documents/input_file.epub I get the version changed ...
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How to preserve each page as sections when converting PDF to EPUB with Calibre?

Trying to convert a PDF to EPUB with Calibre, and make it generate EPUB sections with each individual PDF page. Example: convert this to PDF with LibreOffice https://acdbio.com/sites/default/files/...
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Calibre cuts full anime pages

I have a quick question about calibre. My process is that is have a folder with JPG's of a manga that I read, I then zip that folder into a zip file and run it through calibre to get a PDF file in the ...
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What will be the Kindle file type replacement for when mobi files are deprecated?

What is the current or preferred file type to convert an epub to for a kindle? Assuming paperwhite, or similar relatively recent model. My kindle has backlight but isn't waterproof like the ...
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Is it possible to add a Table of Contents to a CBZ file for my comics?

I want to save a volume of a comic with the table of contents showing each chapter. Is that possible?
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Calibre is changing HTML content while converting

I used Calibre to convert my HTML file to EPUB3 and check it with its viewer and I notice that a lot of syles are missing !!!! so I check the created ebook's files using calibre local editor and what ...
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Convert fixed layout azw3 file, to pdf first or other formats if not possible, with all formatting intact

I have an azw3 as described above. It can be converted into epub, using the extension from Calibre "Kindle Unpack", but there are no paragraphs, meaning that the all the words in the txt ...
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Show books of device that are missing in calibre

How can I show books that are on the device, but not present in the local Calibre library? I have installed Calibre on multiple computers. Naturally, my eBook device ends up with the complete ...
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How to convert and read Khmer PDFs on Kindle?

I was able to find a PDF in Khmer language(a.k.a. Cambodian language). However, when I tried to upload it into my kindle, it turns everything into gibberish. I've looked around and there aren't many ...
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How to convert PDF's with footnotes for Kindle?

I have a collection of PDF files which I'm looking to load onto a Kindle. First, however, they need to be converted. Experimentation gives sub-par results by selecting and converting to mobi through ...
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263 views

How to add read status column in calibre?

I want to sync my read status in caliber with my Kobo Auro H2O(Koreader) but it is not supported yet so the advice here is to create a read status column then sync the data to it. Can anyone explain ...
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Adding a background image in Calibre

To get a background image in Calibre, I gather that I need to open a book and right click. This will expose a menu. Choosing "Preferences" >> "Styles" opens a GUI to change ...
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How do I prevent Calibre from modifying EPUB files when I read them?

Whenever I have an EPUB file and open/read it using Calibre, Calibre silently edits the EPUB file. I know that Calibre edited my EPUBs because I calculated the checksums (SHA-256, MD5, etc.) before ...
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Is there a way to get e-readers to change endnotes into footnotes?

I use Calibre on Linux and have a kindle (not sure the model but it has touchscreen and a built in light). I'm wondering if there's a way to get these readers to move endnotes to the bottom of the ...
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Set calibre cover style on per-library basis

In calibre I have some different libraries in which I store different kinds of books. Most of them don't have a "built-in" cover, so I use the cover generation function of calibre to create ...
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I've started created my epub v3 with Sigil, should I have used Calibre instead?

I'm new to creating ebooks. I have mp3s and mp4s that I want to include in my epub so I started off making an epub v3. I started with using Sigil to create my file but I'm wondering if it was a ...
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How to customize the font when converting from EPUB to MOBI with Calibre?

From within Calibre I generally right click an EPUB book, select "share" and send it to my Kindle address -- it pops up on my e-reader fine. I'd like to set a preferred font for that ...
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How to fix the misaligned word wise after sideloading AZW3 with Goodreads?

I sideloaded the AZW3 with Goodreads using Calibre. And I see that the downloaded word wise is misaligned. Is there anyway to fix it manually? I am using Amazon Kindle Paperwhite 4
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Calibre convertion: text goes out of the screen

I just used Calibre to convert this html document into an epub. To do that, I first downloaded the chapter using: wget -r --no-parent -k https://www.supinfo.com/cours/1CPA/ and then I rename the ...
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JPG continues to appear in subsequent pages

I have tables I converted to jpg inserted into the MS Word file of a book to be published. After converting to epub with Calibre, I noticed the jpgs continue to show in the background in pages after ...
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314 views

Add new format of a book to calibre from command line

There are some books with mobi and azw3 formats on my calibre library which I want to convert them to epub and I prefer to do it from command line. I'm able to convert books using ebook-convert but ...
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Convert math-heavy epub to mobi?

I have an epub with a lot of equations, and these get garbled when converted to mobi using calibre. (E.g., “=“ gets dropped off in the mobi version.) They also become rather small images. (I’d prefer ...
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How to convert a batch of gif URLS to epub?

I have the pages of a book in the form of over 400 gif URLS. How can I most easily convert into epub format? Thanks!
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Fix broken eBook Table of Contents?

The Table of Contents of this .ePub file seems to incorrectly link to one page previous to the desired page. For instance if 'Part 2' is clicked, it directs to the last page of 'Part 1'. I have looked ...
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Is it possible (and how do I do it) to set up my Kindle to talk to Calibre over Wifi, instead of talking to Amazon?

I have a Kindle Paperwhite. I also have Calibre, and a goodly number of DRM free ebooks that have nothing to do with Amazon. I'd like to be able to transfer these to the Kindle without the hassle of ...
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Epub edited in Calibre shows no mistakes but IceCream Ebook Reader show me mistakes

I am editing a book with Calibre and it seems perfect with Calibre reader, but when I save it and I open the epub using IceCream it shows me mistakes, I trying to discover why. Any comments? Thank you!...
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268 views

Syncing highlights made on kindle with kindle for Mac

I have a Kindle Paperwhite, on which I've transferred books from my Mac using calibre. While reading on my kindle, I've made some notes and highlights. How do I go about syncing these highlights and ...
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Calibre: Difference between "Date" and "Published"

When editing the metadata of a book on Calibre, there are two fields that seem to have the same meaning: "Date" and "Published". What's the difference between the two?
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Hash (#) in filename loses chapter information when converted with calibre

I use calibre's ebook-convert to convert HTML files into MOBI files. I have found that if the HTML filename contains a hash-sign (#), then the "chapter structure" of the generated MOBI file is broken. ...
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2 votes
2 answers
2k views

How to convert epub/mobi to PDF without image distortion?

I've used Calibre to convert Mobi/Epub to PDF. The overall output is good, however, the image is always not in good shape. For example, How image shows in Kindle reader (Android app) How image shows ...
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How to send a long web page to a Kindle device?

What's the simplest solution to send a long web page to a Kindle device? Normally I use five filters, but it sometimes barfs. In this case I'm guessing it's simply the size of the page. I'm ...
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Is it posible to compact calibre library?

Haven't found any archiving functionality in Calibre by myself, so assuming it doesn't exist. I am right? How can I shrink the library size using Calibre without changing a books format?
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iOS app to read books from Calibre library store in iCloud drive

I'm looking for an app (or apps), which can access and use Calibre library, stored in iCloud. It was pretty easy to set up Calibre on both macOS and Windows to simply load the library from a ...
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2 answers
555 views

ebook-edit in calibre automation with python

I want to write a python automation program for merge html files in a epub using ebook-edit(in MacOS sub directory) in calibre. I know how to do it manually but I want to it many epub files ...
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2 answers
2k views

convert mobi to epub

Can somebody help me convert this mobi file into a different format, such as pdf/epub? I've tried both online services and software, but it fails and even freezes in readers as the file is too many ...
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2 votes
1 answer
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Can I force Calibre flow mode to ignore page breaks and never skip pages like paginated mode?

The icon for Flow mode shows a viewport with the bottom half of one page on the top followed by the top half of the next page underneath it. But I've found that when I activate Flow mode this only ...
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Calibre: suppress message that is displayed when opening to Full Screen

When opening to full screen, Calibre displays a splash with instructions. I have been using Calibre long enough that I don't need to see this message. Is there any way to suppress this?
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2 votes
2 answers
409 views

JPG loses quality during ePUB to PDF conversion with calibre

I have a ePUB with a bunch of formulas as JPG files. In the ePUB they are super crisp, but during ePUB to PDF conversion with calibre all the images become blurry, I'd imagine they are JPG compressed. ...
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1 answer
3k views

how to NOT have calibre reduce pictures' resolution when converting from epub (or anything I guess) to MOBI

I'm selling art ebooks on KDP Amazon, and I need the pictures not be shrinked as they automatically are when passing from odt to mobi/epub. But it would be easier if Amazon didn't have to convert epub ...
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191 views

Export annotations from (non Amazon) book on kindle

I imported a manuscript (not published by Amazon, or anyone else, at least yet) into my Kindle and used the annotation feature to note down corrections to be made. I would now like to send the ...
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Selective substrings in TOC - calibre

I have 100 HTML files with a structure like this: <div id="message-1">14 April 2015</div> <div id="message-2">16 April 2015</div> <div id="message-3">1 June 2015</div&...
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2 votes
1 answer
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How to show all the books under a tag and its subtags?

Calibre has a feature that lets you create subtags. See "Making subgroups of tags" in the official blog post. Now to actually get hierarchical tags, in the tags section of the metadata entry enter ...
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Kindle Touch 4th Generation does not render published font correctly

I am using Calibre to create an ebook in Urdu language. The language is written from right to left. The whole book is in Unicode and uses UTF-8 encoding. If I open the book in TextEdit on Mac. Mac own ...
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4 votes
1 answer
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How to fix Calibre Author amalgamations?

Somehow I have managed to have several 'authors' that are an amalgamation of different names. Unfortunately, I can't seem to get them split up to how they are supposed to be. When I browse the ...
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2 votes
1 answer
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Adding a language that Calibre does not recognize

I want to add languages that Calibre does not have in its database, such as Farsi (an alias for "Persian") and Hindavi (the precursor to Urdu and Hindi), so that I can use those languages in the ...
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how to convert markdown with sub-markdowns to ebook

main.md contain sub-mds: main.md 1. [1 - ](1.md) 1. [2 - ](2.md) 1. [3 - ](3.md) 1. [4 - ](4.md) 1. [5 - ](5.md) 1. [6 - ](6.md) I use calibre command: ebook-convert main.md main.epub But only ...
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1 answer
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Calibre: Adding ", " as a separator for splitting the authors string

All of my ebooks have a filename of the form author1, author2, ... - [series seriesindex - ] title.* and I have set up Calibre to read metadata from the filename. Calibre, however, does not seem to ...
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1 answer
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How do I use calibre to create page-numbered ebooks for Kindle?

I know Kindle can use APNX files for page numbering, and I've been told Calibre can generate those for AZW books, and I actually followed a tutorial on Reddit where they tell you to go to Calibre's ...
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