Questions tagged [calibre]

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

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12 views

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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10 views

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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7 views

Convert multiple html files with assets to EPUB3

how can i convert multiple HTML files with their own assets(CSS/js/font/images) into epub3 I already have tried caliber and ebook-convert input.html output.epub but a lot of assets are missing and ...
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10 views

Does prefers-color-scheme media query work for dark mode in most readers?

For the past year or so I've been reading my books with dark mode enabled on an iMac (Books/iBooks). Additionally, I use both Books and Marvin 3 on the iPhone, which also have this feature. Lately, I'...
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25 views

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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1answer
21 views

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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1answer
16 views

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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80 views

How to configure Calibre to bypass the Amazon requirement to verify each document?

What are known work-arounds to use calibre to send documents through its e-mail service? https://the-digital-reader.com/2020/06/05/when-did-amazon-start-demanding-that-you-verify-your-ebooks-before-...
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7 views

What are the limits or parameters for send-to-kindle for volume or quantity?

More of an Amazon Kindle policy question than technical. I have about two hundred PDF's which I'd like to load on my Kindle using calibre to send attachments. Each PDF is about fifty pages of text, ...
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36 views

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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16 views

Calibre - Rename book metadata from booklist with the keyboard

I would like to rename a book without going into edit book, edit metadata in individually, or edit metadata in bulk. The booklist is what you see when you open up the program, a list with books ...
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Calibre - Column for 'Last Opened'

'Last modified' will show when the book's metadata was last edited. Is it possible to add a column 'last opened' which updates with the current date whenever the file is accessed?
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1answer
107 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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74 views

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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157 views

Is there a standard, fool-proof way to add a cover to an ePUB?

I write my books (ePUB 3.0) using Sigil. In principle, there's a simple function to automatically add a cover, which creates an XTML file called "cover.xhtml", which looks like this: <!...
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464 views

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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22 views

Problem with endnotes in epub to pdf conversion

I have an ebook with lots of references (about 700) that are listed at the end of the book. I wanted to convert the ebook from epub to pdf so I used Calibre. The problem is that I get a pdf with 900 ...
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29 views

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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58 views

Evince Document Viewer, Calibre: How do i set a keyboard shortcut for autoscroll?

I use calibre as my primary ebook manager (and viewer). I like to convert books to pdf, mainly because when viewed with Ubuntu's native evince document reader, I can use the autoscroll feature. Evince ...
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280 views

How do I convert from epub to mobi and reduce the file size?

I have a large (~200MB) image-heavy epub file that I want to convert to a <20MB mobi file. Following the advice in the answers to this question I am able to reduce the epub file size to <20MB by ...
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22 views

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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129 views

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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665 views

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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56 views

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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23 views

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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1answer
16 views

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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185 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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57 views

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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38 views

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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2answers
166 views

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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1answer
90 views

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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2answers
171 views

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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151 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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1answer
317 views

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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1answer
23 views

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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2answers
1k 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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40 views

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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1answer
311 views

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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136 views

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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2answers
396 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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2answers
1k 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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1answer
648 views

Can I force Calibre flow mode to ignore page breaks and never skip pages like paginated mode?

Is there a way to force Calibre to scroll content like a regular web page, instead of scroll normally till the bottom of a page comes up, then skip the whole screen to the next page, then skip to the ...
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10 views

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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1answer
223 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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1answer
2k 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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147 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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21 views

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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1answer
88 views

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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1answer
94 views

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 ...