A terrific good news for loyal Calibre users is last week Apprentice Alf released a new version of the DeDRM tools with added support for KFX format, so now you can easily import KFX books to Calibre to remove KFX DRM in order to create backups and convert them to other formats. So in this article I am going to show you how to remove DRM from KFX books and convert KFX to Mobi/Epub/PDF step by step.
How to Convert Kindle KFX to Epub/PDF/Mobi with Calibre
The DeDRM Calibre plugin is intended to help anyone looking for free software for removing DRM from their purchased Kindle KFX ebooks. But we have to admit that the biggest inconvenience about using Calibre to remove DRM is that you have to install De-DRM Plugin and KFX Conversion Input Plugin to Calibre fisrt. And this is also the most difficult and also indispensable part to use Calibre to convert DRMed KFX books to Epub/PDF/TXT...
Step 1download Calibre to your computer and launch it.
Step 2download DeDRM_tools and KFX Conversion Input Plugin to your computer.
Remember to unzip the DeDRM_tools plugin package, or you won't be able to load the plugin to calibre successfully.
Step 3load DeDRM Calibre Plugin and KFX Conversion Input Plugin to Calibre.
Open calibre's Preferences dialog. Click on the Plugins button. Next, click on the Load plugin from file button.
Navigate to the DeDRM_tools folder and, in the folder DeDRM_calibre_plugin, find the file DeDRM_plugin.zip. Click to select the file and select Open.
Click Yes in the "Are you sure?" dialog box. Click the OK button in the "Success" dialog box.
Then repeat the same operation to load the zipped KFX Input folder to Calibre.
The loaded DeDRM plugin will be displayed under File type plugins.
And the loaded KFX Conversion Input Plugin will be displayed under Conversion input plugins.
Step 4add Kindle KFX books to Calibre by clicking Add books in the tool bar.
You need to download KFX books with Kindle for PC/Mac or Kindle e-ink Reader first, then add KFX books from My Kindle Content folder or the Kindle's Document folder to Calibre manually. The book will be decrypted soon after you add it to Calibre library.
The KFX books downloaded with Kindle for PC/Mac will be saved in .azw format.
While the KFX books downloaded with Kindle device will be saved in .kfx format.
When you add KFX books to Calibre library, please make sure that your know exactly where your downloaded KFX books are stored on your computer.
If your KFX books are downloaded to your computer with Kindle for PC/Mac, you need to add KFX books to Calibre library from My Kindle Document folder.
Step 5Convert KFX to Epub/Mobi/PDF
Click Convert books in the tool bar and choose ePub/Mobi/PDF/AZW3/TXT... as the output format and click OK to start the conversion.
The book will have two formats for you to choose from after the conversion.
Note: Though Calibre can remove DRM from KFX books , it still can neither open nor convert decrypted KFX books.
How to Convert Kindle KFX to Epub/PDF/Mobi without Installing Plugins
Epubor Ultimate is the first software to declare that it can remove DRM from KFX books not long after Amazon adopts the latest the KFX format. Epubor Ultimate equals an eBook DRM Removal and eBook Converter, which makes it super easy and convenient to decrypt and convert a bunch of books to ePub, PDF or Mobi with just 2 clicks.
Step 1download Epubor Ultimate to your computer and launch it.
Step 2download your KFX books to your computer with old version Kindle for PC/Mac(below 1.25 version).
Tips for Mac users
If your Mac is not able to downgrade Kindle desktop app(does not support 32bit app), you should use the command line to remove Kindle DRM instead.
Step 3add the KFX books from the left to the right main window to remove DRM.
Note: One cool thing about Epubor Ultimate is that it can automatically detect your downloaded KFX books in the left sidebar under Kindle column.
Step 4choose PDF/ePub/Mobi/TXT/AZW3 as the output format and click Convert to PDF/ePub/Mobi/TXT/AZW3 to start the conversion.
If you have used Epubor software before, you should know what Epubor software is capable of. If you haven't used Epubor software before, now you can use the trial version to try it out by yourself.
Besides converting DRMed KFX books to Mobi/ePub/PDF using the above methods, you can also convert Adobe DRMed books and other Kindle DRMed books to ePub/Mobi/PDF... using the two powerful tools.
Calibre VS. Epubor Ultimate
Calibre is an open source freeware ebook library manager. It is the best tool around for keeping track of your ebooks. The DeDRM plugin for Calibre provides a free way to remove DRM from your Kindle and Adobe DRM ebooks. Though Epubor Ultimate is a paid software, it has absolute advantage over Calibre. First of all, you don't have to download the DeDRM plugins and the KFX Conversion Input Plugin. This could be a pain in the ass if you are a tech newbie. Second, Epubor Ultimate supports removing DRM from KFX books downloaded from Kindle e-Ink Reader. Third, Epubor Ultimate can automatically detect all of your downloaded Kindle books, so you don't need to add your downloaded KFX books to the software manually.
In a word, Calibre is not as easy as Epubor Ultimate, it's a little difficult to handle for some people who is not skillful. Epubor Ultimate can definitely save you a lot of trouble by converting DRMed books to Mobi/ePub/PDF... So it totally worths your money. And if you are not satisfied with Epubor software, you can get your money back within 30 days after you place the order.
Important Notice
Both calibre and Epubor Ultimate can’t remove KFX DRM if the Kindle books are downloaded from v1.25 or above Kindle desktop app. So we suggest you downgrade your Kindle app to an older version instead in order to decrypt Kindle books smoothly. However, if you don't want to downgrade Kindle for PC/Mac, you can use the command line to decrypt Kindle books downloaded via the latest Kindle for PC/Mac.
Conclusion
Comparing Calibre with Epubor Ultimate, to be honest, both tools have their own advantages. But Epubor Ultimate makes it more efficient and convenient to remove DRM from KFX books and convert KFX to Mobo/Epub/PDF... If you are not tech savvy, we strongly suggest you use Epubor Ultimate to solve your problem directly with simply 2 clicks.
Hillary Lopez works for Epubor and writes articles about eBooks and eReaders. She explores the best method to help you read eBooks more freely and wants to share all she has got with you.
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Hello,
Yes after Kindle desktop v1.25 and firmware 5.10.2 released, amazon kindle changed their drm scheme technology, which results in drm removing failed.
You'd better downgrade your Kindle for PC/Mac to 1.24(1.23) and STOP auto-update.
Then, use either Epubor or Calibre to help you.
Hello,
I have followed the process above. However, when I am going to convert the file kindle, I received the message " cannot covert the ...." This book is locked by DRM...
What did I do wrong?
ps: I had downloaded the last versions of DeDRM_tools and KFX Conversion Input Plugin.
I am going to enrol a Master and most of the books are in Kindle format.
Thank for your help.
Have a nice day!
For me, 2.24 version didn't work. I tried 1.17 version, the file was automatically shown in Calibre as AZW instead of KFX-ZIP. Though I had to disable my Windows Defender Firewall and Security Software to be able to successfully download DeDRM 6.8, KFX and Kindle 1.17 version. Now, I’m a happy camper… Enjoy
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Please help. When i tried to install DRM tools this message i got :
calibre, version 5.2.0
ERROR: Unhandled exception: <b>SyntaxError</b>:invalid syntax (calibre_plugins.dedrm.__init__, line 168)
calibre 5.2 embedded-python: True is64bit: True
macOS-10.15.7-x86_64-i386-64bit Darwin ('64bit', '')
('Darwin', '19.6.0', 'Darwin Kernel Version 19.6.0: Mon Aug 31 22:12:52 PDT 2020; root:xnu-6153.141.2~1/RELEASE_X86_64')
Python 3.8.5
OSX: ('10.15.7', ('', '', ''), 'x86_64')
Interface language: None
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (1, 34, 0) && Package KFX (from KFX Input) (1, 34, 0) && KFX metadata reader (from KFX Input) (1, 34, 0) && KFX Input (1, 34, 0) && Set KFX metadata (from KFX Output) (1, 44, 0) && KFX Output (1, 44, 0) && Obok DeDRM (6, 7, 0)
Traceback (most recent call last):
File "calibre/gui2/preferences/plugins.py", line 317, in add_plugin
File "calibre/customize/ui.py", line 472, in add_plugin
File "calibre/customize/ui.py", line 61, in load_plugin
File "calibre/customize/zipplugin.py", line 282, in load
File "importlib/__init__.py", line 127, in import_module
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "calibre/customize/zipplugin.py", line 174, in exec_module
File "calibre/customize/zipplugin.py", line 170, in get_code
File "calibre_plugins.dedrm.__init__", line 168
print u" v: Copying needed library files from plugin's zip".format(PLUGIN_NAME, PLUGIN_VERSION)
^
SyntaxError: invalid syntax
I downloaded the DeDRM Calibre Plugin and KFX Conversion Input Plugin, and installed them to Calibre. I'm running Calibre 3.30
I downloaded a Kindle Book (using Kindle 1.26.1), and located the .AZW file.
When added to Calibre, the book cover now appears, and the format is KFX-ZIP. When I try to convert to ePub, I get an error that the book contains DRM and cannot be converted.
What am I missing? Thanks!!
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