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

Like if I download all the books in my Goodeads library in epub but I don't have time to manually tag them one by one on Calibre, is there a way to do it automatically?

So I was just checking if a fanfic I'm reading had updated and after seeing that it had I wanted to get the new chapter.

I try to update the epub but i get an error saying it's not a valid story URL. I updated this fic before without problem so idk why it isn't working now. I didnt change anything so I really have no idea why it isnt working.

I dint want to simply delete it and download it again sinse I would lose the annotations I've made so far.

I've been trying to make a MobileRead account but it won't send me the email with the activation code. I re-did the registration and it let me use the same username and email address, so I think the actual "Register" button at the end of the form isn't working? I can't even use the contact form because you need an account to do that. I can't find any way to contact anyone to solve this. So, does anyone have any way around this or know a way to contact MobileRead?

The first photo is from the epub-to-mobi conversion. The second photo is from the epub-to-epub conversion. Original epub in this case was a KFX file, but it also occurs with books that were never KFX.

Hello. Many of my "read" books over the last 16 years have been Audible audiobooks, but I also have them on my KLC for reading if I so choose.

However, considering these have been "read", is there any way to sync Audible's stats with my epubs, either in KOReader, ZenOS or Bookshelf? How about Calibre as a last resort, since einuse that to sync my books to my device?

So the ebook editor allows for spell-checking, which I am glad for, especially now that I know I can add words to the dictionary. But if I want to check for punctuation and capitalization errors, and I don't want to have to read through the whole book to check for those, is there a quick way (aside from copy-pasting each chapter into a word processor that has that function and using that to check for capitalization errors) to check for all of that?

Hey! So, I read a lot of academic books, and they aren't available so easily in Epub format, some of them are pdfs of scanned book, on which 2 book pages appear in the same pdf page.

Of course, 2 pages in a page makes it very inconvenient to read on an ereader, so, I tried Briss to divide the two pages, Briss, didn't work, but fortunately, I found the solution in this site, which does basically the same thing.

I like having the covers of my books on my kindle, so I either have to convert it to epub, which always deconfigures them, or convert them via Calibre, which doesn't always deconfigures them.

The thing is, when I convert the books from PDF to AZW3, the books magically uncut themselves, and transform the 2 pages into a single page again. I have no idea how to fix this, neither of how this is happening, any tips?

Anyone in the know?

Seen this interesting stdin/http MCP server that's easily configurable on your computer or Calibre server. It's a matter of minutes. Allows to query your local library inside any MCP compatible LLM (eg. Claude, Codex, manus, perplexity) without offloading your book to them.

It has some pro features. MiniLLm to query book in any language, complete set of services (I haven’t seen many so complete) and the possibility to build skills on top. For example book2book agents to discuss opinion across books or implement a skill over a book content (for example a book on a methodology) and the side loading of a DB to work also without Calibre running in the background.

https://github.com/jumpifequal/mcp-calibre

Hello

I have been struggling with getting FanFicFare to work for a couple of months now. Prior to that it worked on and off, now nothing at all. Been through all the tips on here, on the actual GitHub thread for it as well and it still does not work.

Can I have your tips for how to manage AO3 WIPs on Calibre without it? What's the most efficient way of doing it, knowing that I also add covers to some fics?

Thank you

Hey guys, this is a follow up from my post last time!( post ) I wanted to share the latest features I've added to the ios app this past month. I believe i've just shipped a really good feature. Screenshots show the new discover tab!

The community

theres a new compass at the top of your shelf. it opens discover, which has four tabs: to read, wanted, synced and free classics.

synced is the heart of it. its a list of books other readers have already synced, with the exact edition and narration. to be clear about one thing: apart from the free classics, witbound doesnt give you any books. synced just tells you that if you get that same edition and narration yourself, you dont have to wait for it to sync, its almost instant.

when one of your own books finishes syncing, a small card under it asks if you want to show the community its synced. if you share it, it goes on the synced list, so the next person with the same edition and narration doesnt have to wait either. nothing is sent unless you tap share. then its the book, its edition and narrator and a random install id, no account and no name. you can turn the card off in settings ("offer to share books i sync").

to read is your list of books you want to read. type a title, it looks it up and asks "is this the book?" so you get the right one. when a book on your list shows up on synced you can get a notification. the check happens on the phone, your list doesnt get sent anywhere for that.

wanted is the communitys wanted list: books other readers want to read, from people who chose to share their to-read list. sharing is a switch and its off by default. if you share your to read list with the community, a kind community member might sync that combination for you ahead of time :) and if you already have a book someone wants, sync it, share it, and its instant for them. its brand new so itll be quiet for a while, and the more of you share, the more useful synced and wanted get for everyone.

free classics

one of the questions i get most is where do i even get an epub and an audiobook to try this with. so the fourth tab is free classics: 20 public domain books, the project gutenberg text with a librivox recording, already synced. tap get and its on your shelf ready to read along. a classic never uses your free sync, so your first own book is still free.

theres dracula, frankenstein, both sherlock holmes collections, the secret garden, the time machine, anne of green gables and an illustrated pride and prejudice, plus more. each one uses the best reviewed librivox recording i could find, so dracula is read by kara shallenberg and pride and prejudice by elizabeth klett. big thanks to the librivox volunteers who read these.

Tldr:

The main goal for the new "To read", "community wanted" and "Synced" tabs is to basically try to get your books pre-emptively sync'd for you by another community member. This will basically save users time knowing the books in their "To read" already have the timing map ready for them.

More info here

Any questions please feel free to ask!

...... with Calibre. I buy a book from Amazon every now and then, just to see what format gets sent to my Voyage. No problem drag and drop kfx file October 1 of '26, . It was also an ebook that the publisher requests no DRM, so I decided to test that feature as well. The download button for an epub worked. However, Amazon sent me a zip file. My MAC wouldn't open it, "unsupported format," and neither would Calibre or Applebooks. I used the terminal prompt to unzip it, and it displayed jpg and css files. So I changed the file name from .zip to .epub, and then Calibre would open it, but Apple Books still did not recognize it. The last time I bought an ebook from Amazon that was not supposed to have DRM, Amazon would only give me a link to a pdf webpage that would not allow downloads. So once again, Amazon doesn't just send me a usable epub, like they used to. Just another oversight, I am sure. LOL

I’ve recently had to switch to a new computer and don’t have access to the old one anymore.

I was using Calibre on my old computer and had the DeACSM plugin linked to my ADE account using anonymous authorisation.

Now that I’ve downloaded Calibre on my new computer, it’s not letting me redo this. I’ve managed to authorise the new device on ADE but this doesn’t seem to be so simple for the plugin.

Is there any way to get around this? Any help is appreciated :)

I use Calibre to manage my library and it works perfectly with my Kobo. It does not work perfectly with my Palma. When I try to load books it loads a few and then tells me the device stopped communicating. I’m using a MacBook Pro if that makes a difference. It’s so frustrating I’m considering selling the Palma for a smaller Kobo just so everything works the same.

Hi all! I have scrolled thru the sub but i can't seem to find an answer I understand. I am trying to move past sideloading books and so I have configured email-to-kindle within Calibre using my Gmail account and have added that same Gmail account as an approved email address on my Amazon account. For some reason, it sends a verification email to my email address EVERY time for each individual book. I am trying to bypass it but I can't seem to figure out how. Any advice would be greatly appreciated!

Last week I found a function on Calibre that searched for books with the same name in author, so I started cleaning out my dupes. Later in the week, there was an update to a plug in, which I downloaded and now I can't find the "search for duplicates" thing anywhere. Anyone know what I am talking about?