r/Calibre Dec 08 '25

Announcement Patch Notes v 8.16

20 Upvotes

New features

  • Allow asking AI questions about any book in your calibre library. Right click the "View" button and choose "Discuss selected book(s) with AI"
  • AI: Allow asking AI what book to read next by right clicking on a book and using the "Similar books" menu
  • AI: Add a new backend for "LM Studio" which allows running various AI models locally

Bug fixes

  • Use a named local timezone for better display of historical dates in the local timezone
  • PDF Input: Fix a regression in the new PDF input engine that caused HTML markup to not be always escaped
  • Get books: Update amazon.it store plugin
  • Fix addition of format specific options when using calibredb catalog with command line flags
  • calibredb catalog: Fix generation of language field in BiBTeX catalogs
  • Fix incorrect series index when downloading metadata from amazon.co.jp
  • Fix a regression in the previous release that caused the case change menu to not be present in the comments editor.
  • Fix a bug in 8.16.0 that prevented the Ask AI what to read next feature from working
  • Fix a crash in 8.16.0 that caused using the "Close" button in Ask AI to crash calibre on some systems

r/Calibre Apr 04 '25

Announcement Update to moderation regarding to piracy (rule 4)

467 Upvotes

Despite the community rules being pretty clear on the topic, it seems a reminder is needed that this sub has a strict "no piracy" rule. Every day there are numerous posts and even more comments that are either seeking info on how to pirate books, wanting help in making use of books they've pirated, or are people flat out encouraging others to pirate and listing off websites where they can do it. Up until now those posts have simply been deleted as they've been seen, but going forward any users found ignoring rule 4 will be banned from the Calibre sub.

Calibre is a platform that helps everyone organize their eBooks and if you want a book bad enough to read it, you should want the author who wrote it to receive compensation for the work they put into it. If you don't, then this community isn't the place for you to brazenly discuss that moral failure.

Thank you to those who wish to continue keeping this sub in good standing with Reddit and on the right side of copyright laws and basic human decency. If that's not you, feel free to head on out. Thanks.

Edit: Well it's been a lovely day of people trying to argue that piracy is fine, or that removing DRM of books you own is just as much pirating as outright stealing a book you haven't paid for, but I've wasted more time than was worthwhile trying to reply to people. At the end of it all, rule 4 stands and this post was made to serve as a reminder of it and a warning of repercussions for ignoring it. That's it. To those who had civil discourse or expressed understanding of this, thank you.


r/Calibre 3h ago

General Discussion / Feedback I opened the file containing the passages I had highlighted on my Kindle and converted them into a card.

Thumbnail gallery
11 Upvotes

r/Calibre 4h ago

Support / How-To DRM Removal (Not Kindle)

2 Upvotes

Hi everyone,

I bought an ebook from a Danish ebook library for people with dyslexia. When we purchase/download these books, we receive them in EPUB format, but they can apparently only be opened using Thorium Reader with a code to unlock the DRM.

I'd really like to remove the DRM so that I can use the book as a PDF instead. Does anyone know how I could do this?

Most of the guides I've found seem to focus on something called "Kindle" or other DRM systems that I don't think are the same as the one I'm dealing with. I've tried following some of those guides anyway, but unfortunately without any luck.

Any advice on what type of DRM this might be or where I should look for a solution would be greatly appreciated. Thanks!


r/Calibre 11h ago

Support / How-To Adding Page Menu to Epub

3 Upvotes

Hello! Hopefully, my title is fairly clear. I'm hoping someone can help me out. I recently obtained a manga from a friend entirely in JPEG. I combined the jpegs into a single PDF then created an epub from that file! Great!

While the file works pretty well, there is no way to go through the pages unless it is individually page for page (there is no menu to jump to pages) is there a way to set it up so I can jump to different pages? I am fairly new to the program and am just learning. I don't have too much experience in coding, but I am willing to try!


r/Calibre 10h ago

Support / How-To FanFicFair Question

1 Upvotes

I use fanficfair on calibre -both updated-to download from several sites that I am a member of. I am lazy and its the easiest way to do it. I do NOT distribute these downloads, it is strictly for offline reading. There is ONE story that chokes on updating the metadata on, probably from having File Explorer open. Anybody have any information on why this happens to one particular file of about thirty?


r/Calibre 14h ago

Support / How-To Question about setting reading position

2 Upvotes

Hey all,

I've been really getting into the weeds with Calibre, as I'm sideloading my books now. I have installed, and now using KoboUtilities. There is a book which I knew I was 45% of the way through.

I sideloaded the book to my Kobo, set the reading position in Calibre, and then used KoboUtilities to 'store/restore' the reading position of that book.

When the Kobo had refreshed, it showed me that the book was now at 45%. Success! However, when I opened the book, it opened at page 1 and reset the reading position. My expectation was that, since Calibre had successfully set the reading position of the book, when I opened it, I would open at 45% of the way through, but this did not happen.

Can anyone show me what I'm doing wrong?


r/Calibre 19h ago

General Discussion / Feedback Looking for a plug in

5 Upvotes

So i'm working on cleaning up my library and was wondering if there were plug ins that yall recommend for auto genre tagging and then being able to filter them by genre to and marking them so that they can be easily found to create the genre tag under a custom column and a way to run a check to filter out books that won't load or are 'broken' for whatever reason and then mark those so I can put them into a custom column that I already have set up?


r/Calibre 12h ago

Bug Weird Crashing Error

1 Upvotes

Lately Ive been getting a weird error after loading books onto my kindle fire. Im loading the books as epib which in the past has worked great. The error happens whn i start reading the books it suddenly freezes and I usually have to either wait 3-4 min for it to reset or I have to do a hard reset.

Not sure if this is an error from calibre or from kindle? What should my next steps be?


r/Calibre 17h ago

General Discussion / Feedback Calibre users: I built a Quest e-reader that reads whatever you export (EPUB/MOBI/PDF/CBZ). Curious how you'd want it to talk to Calibre.

2 Upvotes

Solo dev and a Calibre user. HoverTome is an e-reader for the Quest — your own files, no account, offline. EPUB is first-class; MOBI and CBR auto-convert on import; PDF and CBZ too. 11 typefaces, margins/spacing, dark page, offline dictionary, chapters, bookmarks.

Right now the workflow is: export from Calibre, copy to the headset over USB (or download in the headset browser), tap Scan. It works, but I know this community would want better. Options I'm weighing:

  • Calibre device plugin so the Quest shows up as a device and "Send to device" just works
  • OPDS catalog support so you point HoverTome at calibre-server on your LAN
  • Wireless device connection

Which would you actually use? Store page if you want to see it: https://www.meta.com/experiences/hovertome/1056683397316514/ ($9.99 once) — site with a browser demo: https://www.hovertome.com


r/Calibre 22h ago

Support / How-To Alternative to Calibre Companion?

6 Upvotes

I have used Calibre Companion with no issues for many years to transfer books from PC where they are stored to my phone and tablet. But I just got the Galaxy S26U and it no longer works. It opens and closes immediately. According to Google Play, it has not been updated in 3 years.

Any safe alternatives?


r/Calibre 16h ago

Support / How-To I converted everything except a couple hundred kfx books with epubor on a Mac using oasis. Is there a way to get kfx to convert?

1 Upvotes

r/Calibre 17h ago

Bug Issue in version 9.2.1 - Exiting full screen mode missing cursor

1 Upvotes

Version 9.2.1 in Windows 11.

  1. Read a book in Calibre ebook Viewer.

  2. Right click and select "Enter Full Screen" from the menu

  3. Right click and see "Exit Full Screen" but note that there is no cursor visible making it near* impossible to exit full screen mode.

*(Alt-Tab repeatedly to another program to move your cursor until it is in the same position as the "Exit Full Screen" button, then click while inside the ebook viewer to exit full screen.)


r/Calibre 19h ago

General Discussion / Feedback alternate / original titles?

1 Upvotes

Hey, was wondering if there's a way to add alternate titles (original names of translated books) as a different column. I can make a custom column, but it doesn't get stored or accessed by ebook readers like kindle or koreader, do they? Any way to make that work? I'd love for those alt names to be read separately


r/Calibre 1d ago

General Discussion / Feedback Kobo Libra Colour covers

Post image
7 Upvotes

r/Calibre 1d ago

Support / How-To I did something to my install and now I can only open Calibre as Administrator

5 Upvotes

This wouldn't be a big deal except it's driving me crazy that I can no longer drag and drop books into the library. The trouble is, I can't remember what I did. It was at a time about a month ago when I was trying to rip the DRM from my Kindle books, plus I also have the Audiobookshelf Sync plugin now. I've removed the DeDRM and KFX Input plugins to no effect, and I've given my windows account ownership of the exe file. I feel so dumb, I remember thinking "I should really reverse that" when I realized what I did, but I...didn't and now I can't remember what it was! Anyone have any ideas for removing admin-only?


r/Calibre 1d ago

Support / How-To Save to disk to Koofr folder?

2 Upvotes

Hi! Is it possible to save to disk to the Koofr webDAV folder, as you would using a Google Drive folder? Thanks!


r/Calibre 1d ago

Support / How-To Converting KFX to KEPUB is a bloody headache

12 Upvotes

I've purchased a Kobo Libra Colour as I want to move away from Amazon and given my latest experience, I should have done it sooner.

I have spent nearly 3 hours, and now getting a migraine, trying to convert my PAID FOR books to KEPUB but the DRM on my Kindle EBooks wont let me.

I have installed Calibre and the DeDRM Plugin version 10.9 and the KFX plugin.

When I import the Kindle file it comes up as KFX-ZIP and it fails to convert every time.

I am at my wits end.

The serial number of my Oasis has been entered correctly.

Am I shit outta luck?


r/Calibre 1d ago

Support / How-To Select custom folder before transfering a book to kindle

1 Upvotes

Greetings.Is there any way or plugin with which we will have option to manually select transfer folder before sending e-book on Kindle? Unfortunately Koreader has only an option to just set the standard transfer folder.


r/Calibre 2d ago

General Discussion / Feedback 2026 WORKING Kindle App + Calibre DeDRM Post August 22nd Patch

31 Upvotes

I’ve been seeing a lot of online discussion about books published after August 22nd not being able to use DeDRM or other methods to convert the file. They having the following issues:

*Cant download books to obtain the .azw file in your folder
*DeDRM not working

Both of these issues are related to wrong versions of the kindle app such as 2.4.0 and other versions

You can download and convert the kindle books to any formate (like .pdf) if you use version 2.9.1 and follow the same steps as usually. Same plugins, same method, no more errors about unable to download the book because you must update. No more issues about DeDRM failing.

Just make sure you’re using 2.9.1. Type in 2.9.1 uptodown and download it. You’re welcome!


r/Calibre 1d ago

Support / How-To Making folders in Kindle (2007)

1 Upvotes

Is there a way to make folders in calibre that appear on my Kindle directly??

It is a Kindle from 2007 and the system doesn't support the in-kindle way of making folders or rearranging the old ones.

Is there any solution to this problem? Thanks in advance!! ;-)


r/Calibre 1d ago

Support / How-To Properly converting azw3 to epub so links inside file work?

1 Upvotes

I've got an AZW3 I cannot open on Librera, so I went and converted it to epub. Done that 15 years ago during my Kindle days too and it always worked like a charm.

The conversion itself works without issue, I left everything at default settings. But the links to the different chapters inside the book don't work. Tapping them doesn't do anything. If it's related to Librera itself and that happens to be a bad choice in general, what other software should I use for on the go?

Also, what are the go-to settings to ensure that links work after converting an AZW3 to epub?


r/Calibre 2d ago

Support / How-To Suddenly Kindle books are stuck on DRM and KFX-Zip

9 Upvotes

I've got an Oasis running 5.18.2.1.1 and the latest Calibre (9.14). Last week I could plug in my Oasis highlight my Kindle book, right click and "add book to library" it would add to my Calibre Library and I could convert it to Epub (or anything I wanted).

Suddenly today I tried it and it comes over as KFX-Zip and is stuck on DRM. I tried with a book published in 2017 and it still didn't work. Did something change or is it user error? I did install Kindle Previewer over the weekend but I don't know why that would change anything.

Any idea?


r/Calibre 1d ago

General Discussion / Feedback download all docs from kindle to mac

0 Upvotes

Question, is it still possible to download all docs (book) that we put to kindle via Send to Kindle web to Calibre (on mac)? because i try to plug the kindle to mac and calibre dont detect anything. or i need to do this on windows?


r/Calibre 2d ago

Support / How-To Still not able to de-DRM azw files

5 Upvotes

I am on macOS (Tahoe 26.6.2) and I have not been able to convert AZW3 files to EPUB successfully.

I've been wanting to leave Kindle ecosystem for awhile so I started purchasing my ebooks from somewhere else but haven't seen a reason to ditch my Kindle device (it's working well, moving to Kobo means moving from one locked ecosystem to another, etc).

Yesterday I was gifted an xteink and would like to be able to move some of my old purchases there.

Can anybody help me? I have DeDRM (after taking this screenshot I updated it to 10.0.3 without success) and KFX plugin active and I'm on Calibre 9.14.

I dragged the AZW files from Finder to Calibre and picked convert.

Tried this: https://dedrm.com/ too but not successful. Is it my Kindle serial number? I took it from Amazon manage my device.

Appreciate any help!