Unlock Your eBooks: Explore Non-DRM Repositories Based on Calibre Technology
Unlock Your eBooks: Explore Non-DRM Repositories Based on Calibre Technology
Calibre DRM Removal Plugins / NoDRM Fork
Posted by Jonny Greenwood on 11/8/2023 2:28:14 PM.
5.0 (109 comments)
What is Calibre DRM Removal Plugin? Calibre DRM Removal Plugin, known as Alf’s DeDRM Plugin tool, is developed to remove DRM from eBooks, including Kindle, Kobo and Adobe DRM. There is no doubt that Calibre’s success majorly depends on those varieties of plugins and Alf’s DRM Removal plugins are the super stars among them. But many people are saying the Calibre’s interface and user-experience are not that friendly for tech noobs. No mention the plugin installation, which would be another challenge for them. To help you use this free DRM Removal plugin smoothly, this article will cover these two issues: how to install DRM Removal Plugin to Calibre on Windows /Mac and how to remove eBook DRM with Calibre DRM Removal plugins.
Part 1. How to Install Dedrm Plugin to Calibre
Step 1. Install Calibre
Calibre is totally free to download and use, click the buttons below you can download the Windows and Mac versions.
Download for multiple platforms click here: http://calibre-ebook.com/download
Step 2. Download the DRM Removal plugin
Download the latest version of DeDRM Plugin DeDRM_tools_10.0.9.zip (released on Aug 2, 2023) here.
Unzip the file, and you will get a DeDRM_plugin.zip file.
- The latest NoDRM fork is v10.0.3 for Calibre (V6.24 or later).
- The DeDRM versions 7.1.x or later works for calibre 5.x or later.
- You must use the 6.8.x DeDRM plugin for calibre 4.23 or earlier.
Step 3. Install the DeDRM_plugin.zip to Calibre
Run Calibre, and click “Preferences” in the top menu bar, then look at the bottom of the new window, you can see “Plugins” in the “Change calibre’s behaviour” area.
In the plugins center, please click “Load plugin from file”.
Find the DeDRM plugin you downloaded in the step 2, and click “Open”. The Calibre will warn you about the security risk, click “Yes” to proceed.
Finally you can see the success notification.
Back to the Plugin center you can see the plugin information in under “File type plugins”.
Now the plugin is installed successfully, you can use Calibre to remove eBook DRM.
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Part 2. How to Remove eBook DRM with Calibre DRM Removal Plugins
For now, this Dedrm plugin can remove DRM from Kindle eBooks (only downloaded to your kindle desktop application and kindle eink device), Barnes & Noble ePub ebooks (Because Nook has changed its DRM scheme, this DRM plugin does not work for Nook DRM any more.) , any ebooks using Adobe Digital Editions DRM (This includes ePubs from Kobo and Sony that are downloaded for Adobe Digital Editions. I have to mention that many vendors have strength their ADE DRM to force readers to download eBooks via ADE4.5 which may caused the DRM removal failure.), and the older Mobipocket and eReader ebooks.
Detailed stepsRemove DRM from eBooks with Calibre
Step 1. To remove DRM from eBooks, you just need to find your downloaded file and add them to Calibre.
Step 2. Once the book has been added successfully, DRM will be removed automatically.
Detailed stepsRemove DRM from Kindle device with Calibre
The above steps show you how to remove DRM from ebook downloaded to your computer directly. If you have books downloaded via Kindle devices, this part will show you how to remove drm from Kindle device with Calibre DRM removal plugin. Please note: Calibre DRM Removal plugin cannot handle ebook downloaded via Kindle device firmware higher than 5.10.2 because they are encrypted with a new Kindle KFX DRM.
Before we start the detailed steps, please find your Kindle serial Number and write it down at first. You will need it later. You can also watch the following video to know how to find a Kindle serial No.
Step 1. Run Calibre, and find “Preference”–>>Plugins.
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Step 2. Then find “File type plugins”–>>Select “ DeDRM (6.6.3) by Apprentice Alf….scripts” and then click on “Customize Plugin”.
Step 3. A new window will pop up to let you configure your DeDRM. Select “eInk Kindle eBooks” and fill in the kindle serial No. you have remembered at the very begining. Then click on “OK“ button.
Step 4. Then go back to the main interface of Calibre and plugin your Kindle device. Find the “Device” option at the top menu and select “Show books in the main memory of the device”.
Step 5. All Kindle books from your device will be loaded in. Select the book you want to decrypt, right click the mouse and then choose “Add books to Library” . You will see your selected books has been transferred to the main library of Calibre and the DRM has been removed in this process.
This process is a little bit difficult, right? Don’t worry, follow the bonus tip to learn the easiest way to remove Kindle DRM .
Calibre DeDRM not Working Issue
Q1: DeDRM Kindle not working
A: Calibre Dedrm plugin does not work for kindle kcr ebooks on Mac computer. So please follow the instructions how to remove drm from kindle kcr and convert kindle kcr to pdf to older version. Then use Calibre DRM removal plugin to remove Kindle DRM.
Q2: Can Calibre DRM Removal plugin handle iBooks DRM?
A: This DeDRM tool does not work for iBook anymore.
Q3: DeDRM plugin has installed successfully, but failed to remove DRM.
A: Please ensure the plugin installed is the latest version. You can always find the latest version at Github .
Bonus Tip: Best Calibre DRM Removal Plugin Alternative
Epubor provides a software called “Epubor Ultimate“ which can remove DRM from Amazon Kindle, Adobe Adept(including Kobo, Sony and Google eBooks), Barnes & Noble, Mobipocket and eReader eBooks.
Download Epubor Ultimate for free:
With this program you need not to download or install Calibre and the plugin. Just download and install the Epubor Ultimate, your books will be automatically detected and displayed at the left column. Drag them from the left to the right column, DRM will be removed at the following picture. Cannot be much easier, right?
If you are using the Kindle device, you will not be required to fill in your Kindle serial No. In addition, it only requires you to click one button, then you can remove the eBooks DRM. From all aspects, this way is far more easier than Calibre and the plugins.
| | Alf DRM Removal / Calibre DeDRM Plugin | Epubor Ultimate | |
| —————————————– | ————————————————– | —————————————————————————————– |
| Pros | Free; More functions and features to manage eBooks | All-in-one tool; Easy to use; Clean interface; 7/24 Customer service with online livechat |
| Cons | Not easy to use; No customer service | Paid software (with free trial) |
Here maybe you are interested in this video about the Epubor Ultimate.
Download Epubor Ultimate for free:
Jonny Greenwood joined Epubor since 2011, loves everything about eBooks and eReaders. He seeks the methods to read eBooks more freely and wants to share all he has got with you.
SHARING IS GREAT!
109 Comments
Gloria
Re:Calibre DRM Removal Plugins
01/18/2014 06:54:01
Thank You!
PuruPuru
Re:Calibre DRM Removal Plugins
12/10/2014 12:59:16
If it doesn’t work, try to:
- remove your DRMed books from the library
- reload Calibre
- add them again to library
at least this works for me!
Z
12/14/2015 13:34:23
It works in this way. Thanks
Jim M
04/14/2019 07:20:15
This didn’t work for me. I tried this several times.
Does it work with the latest version of Kindle for PC?
(I know that older versions required the older version of Kindle for PC.)
Epubor
04/15/2019 13:50:49
This plugin does not work with kindle version 1.25 or higher. Please downgrade your Kindle to older version and then use above mentioned method to remove the DRM.
Cris
06/2/2019 01:54:39
How do you downgrade your Kindle?
Epubor
06/4/2019 09:54:19
Here are two ways to downgrade your kindle for pc/mac: https://www.epubor.com/how-to-downgrade-kindle-for-pcmac.html
Peter
01/23/2023 17:57:18
Please,how does it work?
KA
12/19/2015 16:34:54
Thank you. This worked!
Dummy
03/23/2016 14:56:15
This worked! So easy, thank you so much!
Zen
08/19/2016 04:21:14
Thank you so much! You made my day! Your advice work great
thanks
08/3/2017 13:23:29
THANKS!!
This worked!
-- after adding plugin and restarting calibre, remove the ebook and re upload
Epubor
08/9/2017 09:20:36
We are glad to hear that!
Satisfecho
Re:Calibre DRM Removal Plugins
12/17/2014 20:07:00
El proceso fue fácil y lo logre, pude quitar el DRM
Awesome!
Re:Calibre DRM Removal Plugins
12/22/2014 05:26:00
Perfect. Everything working. If you have $20, purchasing the Epubor Ultimate (which includes DRM removal as well as eBook converters) is well worth it. It gets rid of DRMed AZW4 files in less than a minute. Drag-drop-done.
Michael C
04/20/2016 10:48:26
It works perfectly if follow what PuruPuru tells you to do! Thank you.
Andy
Re:Calibre DRM Removal Plugins
05/1/2015 04:15:19
To make it work, do this! (copied from earlier post, Thank you PuruPuru!)
If it doesn’t work, try to:
- remove your DRMed books from the library
- reload Calibre
- add them again to library
at least this works for me!
Christine
11/11/2017 18:40:08
This is exactly what I did and it worked.
sadanand joshi
Re:Calibre DRM Removal Plugins
05/4/2015 23:13:47
Does the Mac version work, anyone?
Alen
05/5/2015 22:59:53
Of course you can run it on Mac, if you have installed Calibre.
Daw
Re:Calibre DRM Removal Plugins
06/29/2015 02:23:40
Works fine (win 7 + calibre 2.31[64bit])
Yolanda
Re:Calibre DRM Removal Plugins
08/18/2015 06:46:41
Gracias tras intentarlo con varios con tus plugins y tus indicaciones lo he conseguido.
TomTom
Re:Calibre DRM Removal Plugins
09/16/2015 02:09:33
Works fine :-)
Verry nice
Re:Calibre DRM Removal Plugins
10/15/2015 04:43:46
Good Job. works fine for drm solved epubs.
Alessandra
Re:Calibre DRM Removal Plugins
11/24/2015 05:45:41
Excelente!! Thanks.
Martyn
Re:Calibre DRM Removal Plugins
12/6/2015 04:17:48
Pure magic, solves the issue of problem authors on Amazon that don’t understand the purpose of a book.
B.A.
Re:Calibre DRM Removal Plugins
01/18/2016 09:30:44
The Calibre DeDRM plug-in and Epubor software work well on Win7 64-bit.
You MUST have Kindle for PC/Mac/etc. installed and activated on your PC before either the plug-in or Epubor software will remove the DRM from Kindle books.
If you download other e-books, you must have Nook for PC, Adobe Digital Editions, Kobo Reader, etc. installed for either approach to work. Both software solutions rely on being able to access YOUR account credentials which were used to encrypt the e-book you have downloaded. This is the only way the e-books with DRM can be decrypted. Note: This prevents sharing e-book files with intact DRM.
The documentation for DeDRM and Epubor both explain this. If you can’t use these solutions, you probably didn’t read the documentation. Everything is very well spelled out.
Also, Kindle books with DRM that are already added to Calibre must be removed and reloaded for the plug-in to work. It only works when Calibre loads and processes the book file.
Tomato33
Re:Calibre DRM Removal Plugins
06/2/2016 00:39:45
DRM Removal plugin works very fine for me.
About 100 times with ePubs from a open library, in Germany.
Good Job
Greeting
Tomato33
marlona
Re:Calibre DRM Removal Plugins
06/24/2016 20:50:25
last method worked perfect
KarjamP
Re:Calibre DRM Removal Plugins
07/17/2016 10:18:40
To those of you that are complaining about this plugin not working:
This website’s offering an outdated version of the Calibre plugin. Try downloading the latest version from the plugin’s official website first before you start complaining: apprenticealf(dot)wordpress(dot)com
oAoMo
Re:Calibre DRM Removal Plugins
06/13/2017 12:59:42
Thank you so much. It’s easy to install and work perfectly.
Iris
06/15/2017 11:50:55
You are welcome!
franck
Re:Calibre DRM Removal Plugins
09/20/2017 04:21:27
Thank you very much, your plugin is working perfectly.
Epubor
09/20/2017 15:59:05
We are glad to know that it works well.
Carine
Re:Calibre DRM Removal Plugins
12/20/2017 10:16:50
Perfeito. Pra quem não está conseguindo, baixe a versão antiga do Kindle para PC. Baixe o ebook através do Kindle para Pc. Dá super certo.
Martin
Re:Calibre DRM Removal Plugins
01/9/2018 17:00:42
Works like a charm! Thank you very much..
az
Re:Calibre DRM Removal Plugins
05/20/2018 21:54:44
It worked. Thanks.
Epubor Angel
08/24/2018 10:05:04
Thanks for your feed back. Any suggestions don’t forget to let us know.
ank
Re:Calibre DRM Removal Plugins
11/29/2018 02:30:58
superb job
DavidJ
Re:Calibre DRM Removal Plugins
02/10/2019 10:29:13
Instruction: Run Calibre, and click “Preferences” in the top menu bar. Problem- Running Calibre brings up the Library where I cannot find “preferences”. I must be doing something wrong, but what is it?
WC
02/20/2019 06:29:06
If you open up the main Calibre program screen, you will see the PREFERENCES all the way to the top right.
julia
Re:Calibre DRM Removal Plugins
04/20/2019 13:58:49
Hi,
When I try to install the plugin, I get an error message: calibre, version 3.40.1
ERROR: Unhandled exception: <b>InvalidPlugin</b>:The plugin in u’C:\\Users\\Owner\\Downloads\\DeDRM_plugin (1).zip’ is invalid. It does not contain a top-level __init__.py file
calibre 3.40.1 embedded-python: True is64bit: False
Windows-10-10.0.17763-SP0 Windows (‘32bit’, ‘WindowsPE’)
32bit process running on 64bit windows
(‘Windows’, ‘10’, ‘10.0.17763’)
Python 2.7.15+
Windows: (‘10’, ‘10.0.17763’, ‘SP0’, u’Multiprocessor Free’)
Interface language: None
Traceback (most recent call last):
File “site-packages\calibre\gui2\preferences\plugins.py”, line 317, in add_plugin
File “site-packages\calibre\customize\ui.py”, line 472, in add_plugin
File “site-packages\calibre\customize\ui.py”, line 61, in load_plugin
File “site-packages\calibre\customize\zipplugin.py”, line 193, in load
File “site-packages\calibre\customize\zipplugin.py”, line 291, in _locate_code
InvalidPlugin: The plugin in …\\DeDRM_plugin (1).zip’ is invalid. It does not contain a top-level __init__.py file
Perhaps it needs an update?
Thank you!
robynz
06/6/2019 14:36:05
This is the exact same problem that I’m having. When I open the .zip file, I can see the _init_.py file in the DeDRM_tools_6.6.3 in temp folder where the .zip unpacks.
Thinking I’ll just get the other software and be done. This used to work perfectly, but sadly it doesn’t and the plugin won’t install now.
Epubor
06/10/2019 16:23:24
Thank you for reporting this issue. The plugin has been updated. Please download and try it again.
cindy
06/12/2019 13:49:08
Seems the plugins was not updated, I still got the same issue today.
Cindy
Girish
06/12/2019 21:44:48
Yep, same issue. Using Calibre 3.44
Iris
06/14/2019 09:11:42
This problem has been fixed. Please redownload the plugin to dedrm your books.
Sorry again for the inconvenience caused.
Iris
06/14/2019 09:10:47
Thank you for reporting this issue. We have updated the plugin again. Sorry again for the inconvienience caused.
Adam
11/12/2020 12:32:22
I just updated to the latest calibre and downloaded the plugin today.I’m having the same issue. mac mojave.
Epubor
11/12/2020 14:15:29
Thank you for your comments. That’s because the calibre is written by python 3 but the calibre drm removal plugin is written by python 2. You can follow this guide: https://www.epubor.com/solutions-to-calibre-dedrm-plugin-not-working.html to get your this issue fixed.
Hap
Re:Calibre DRM Removal Plugins
06/30/2019 06:42:57
I have been trying over 4 hours but not luck with converting KFX-ZIP file to epub. I have reinstalled KFX plugin but no luck
Reese
Re:Calibre DRM Removal Plugins
09/23/2019 20:11:54
I did the following steps but Calibre still shows the message that books are DRMed.
- Downloaded Calibre
- Downloaded the Plug-In –> added it to the PREFERENCES. It sais it is active
- Restarted Calibre.
- Downloaded the E-Book in AZW3 from Amazon (“Download and transfer via USB”)
- Added the book to Calibre
--> Cannot open it in Calibre
Do you have some helpful ideas I maybe missed to do? Would be great if you could help!
Epubor
09/24/2019 08:44:59
If you have downloaded the kindle books from amazon via usb, this book is encrypted with azw3 drm. Please follow this part” Remove DRM from Kindle device with Calibre” in this article. You should enter the kindle series no.
Marv
Re:Calibre DRM Removal Plugins
01/9/2020 10:39:28
Plugin does not seem to work again. Please assist. Many thanks.
calibre, version 4.8.0
ERROR: Unhandled exception: <b>InvalidPlugin</b>:The plugin in u’/Users/apple/Desktop/DeDRM_plugin/alfcrypto_src.zip’ is invalid. It does not contain a top-level __init__.py file
calibre 4.8 embedded-python: True is64bit: True
Darwin-18.7.0-x86_64-i386-64bit Darwin (‘64bit’, ‘’)
(‘Darwin’, ‘18.7.0’, ‘Darwin Kernel Version 18.7.0: Tue Aug 20 16:57:14 PDT 2019; root:xnu-4903.271.2~2/RELEASE_X86_64’)
Python 2.7.16
OSX: (‘10.14.6’, (‘’, ‘’, ‘’), ‘x86_64’)
Interface language: None
Traceback (most recent call last):
File “site-packages/calibre/gui2/preferences/plugins.py”, line 319, in add_plugin
File “site-packages/calibre/customize/ui.py”, line 472, in add_plugin
File “site-packages/calibre/customize/ui.py”, line 61, in load_plugin
File “site-packages/calibre/customize/zipplugin.py”, line 194, in load
File “site-packages/calibre/customize/zipplugin.py”, line 292, in _locate_code
InvalidPlugin: The plugin in u’/Users/apple/Desktop/DeDRM_plugin/alfcrypto_src.zip’ is invalid. It does not contain a top-level __init__.py file
Epubor
01/9/2020 11:21:28
Thank you for asking. This is a free software and you can ask this question on its official website.
You can try our software epubor ultimate to remove ebook drm: https://www.epubor.com/ultimate.html
PLUGIN NOT WORKING
01/24/2020 20:01:50
Doesnt seem to work. i get this error message:
DeDRM_plugin/alfcrypto_src.zip’ is invalid. It does not contain a top-level __init__.py file
Im running mac 10.12
Calibre 3.48
Trying to convert Kindle to Kobo
Epubor
01/26/2020 14:16:12
What’s your kindle for mac version? Please ensure you are using kindle for mac older than 1.23 to download kindle books.Then try to use Calibre to remove kindle drm again. If you are still failed, please use Epubor Ultimate to remove kindle drm >>https://www.epubor.com/ultimate.html
mang
Re:Calibre DRM Removal Plugins
04/29/2020 09:24:55
Hi. it doesn’t work. Any alternative? Thanks.
Epubor
04/30/2020 08:43:05
If you are looking for the alternative to Calibre DRM Removal plugin, please try Epubor Ultimate>> https://www.epubor.com/ultimate.html
Antti
Re:Calibre DRM Removal Plugins
05/24/2020 17:48:49
The current 6.7.0 release at https://github.com/apprenticeharper/DeDRM\_tools/releases/tag/v6.7.0 is not compatible with Python 3, while at least Calibre from Ubuntu 20.04 repositories already runs on Python 3.
There is ongoing community work on fixing this, and as a work-around the plugin can be cloned from a GitHub branch and installed manually. On Linux, this can be done on the command line like this:
[code]
git clone -b Python3 git@github.com :lalmeras/DeDRM_tools.git
cd DeDRM_tools
calibre-customize -b .
[/code]
Epubor
05/25/2020 11:21:32
Thank you for sharing this. We appreciate it.
nishreen mitchelle marabe
Re:Calibre DRM Removal Plugins
10/24/2020 22:36:41
I cant download the DRM removal plugin. the link you have given is not valid. please help. thank you!
Epubor
10/26/2020 08:54:54
Thank you for contacting us and we’ve check all the links in this page but they are all works fine now.
If you ensure there is invalid link, please send the link to us via epubor.iris@gmail.com .
Have a nice day.
Meika
Re:Calibre DRM Removal Plugins
01/15/2021 05:29:09
I downloaded the Calibre plugin, unzipped and added the other zip file but it says ‘InvalidPlugin… does not contain a top-level_init_-py file’
The other links I downloaded -the converters only convert a small percentage of the book and require you to pay $25 to convert. Is there another way??
Richard Lang
Re:Calibre DRM Removal Plugins
01/25/2021 23:39:37
The DRM plugin is 32 bit, I get errors that say 32 bit running on 64 bit windows.
No Init support found. Is there a Windows 10 64 bit supported version?
Deb
Re:Calibre DRM Removal Plugins
03/12/2021 00:34:02
I keep getting a syntax error when I try to load into Calibre.
I got it on my old file from 2019, and on the newly downloaded one just now. See below:
calibre, version 5.12.0
ERROR: Unhandled exception: <b>SyntaxError</b>:invalid syntax (calibre_plugins.dedrm.__init__, line 167)
calibre 5.12 embedded-python: True is64bit: False
Windows-10-10.0.18362 Windows (‘32bit’, ‘WindowsPE’)
32bit process running on 64bit windows
(‘Windows’, ‘10’, ‘10.0.18362’)
Python 3.8.5
Windows: (‘10’, ‘10.0.18362’, ‘’, ‘Multiprocessor Free’)
Interface language: None
Traceback (most recent call last):
File “calibre\gui2\preferences\plugins.py”, line 316, 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 293, 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 185, in exec_module
File “calibre\customize\zipplugin.py”, line 181, in get_code
File “calibre_plugins.dedrm.__init__“, line 167
print u” v: Copying needed library files from plugin’s zip”.format(PLUGIN_NAME, PLUGIN_VERSION)
^
SyntaxError: invalid syntax
Deb
03/12/2021 01:22:09
And, I did try the other software, which left half the books as txt files and incomplete :(
Epubor
03/12/2021 08:53:29
Thank you for your feedback. Are you using the trial version? Please note the trial only convert 20% content of each book and store them as TEXT format.
If you want the whole content, please upgrade it to the full version now.
James
Re:Calibre DRM Removal Plugins
03/16/2021 12:37:46
Syntax Error: invalid syntax line 167)
What’s the fix?
Epubor
03/17/2021 10:44:22
Please follow this guide to get this issue fixed: https://www.epubor.com/solutions-to-calibre-dedrm-plugin-not-working.html
holly
Re:Calibre DRM Removal Plugins
07/7/2021 04:38:38
the links to the zip for this plug in don’t work - nothing pops up to download. is this calibre plug in no longer free? can you point me in the direction of where to download this plug in? i have used this before but have a new computer and need to reinstall it here. thank you for your help!
Epubor
07/9/2021 09:18:54
The dedrm removal plugin is totally free. You can just download it from the link in this article. We’ve checked this link after your comment, and ensure it is working.
Have a nice day.
Annie
Re:Calibre DRM Removal Plugins
08/9/2021 16:21:47
Perfect - many thanks:)
Kelly Mitchell
Re:Calibre DRM Removal Plugins
09/12/2021 23:19:43
Does this work with the latest azw3 files? I downloaded some from Kindle Unlimted and I get message:
Cannot convert [book]. this book is locked by DRM.
thanks.
Epubor
09/13/2021 09:25:19
Which software does you mean here? Calibre or Epubor Ultimate?
We are sincerely sorry to inform you that both this software doesn’t support the kindle unlimited ebook. The kindle unlimited ebooks are rented books.
Henrik
Re:Calibre DRM Removal Plugins
10/12/2021 17:34:20
Hi,
this doesn’t seem to be working with the new version of Calibre (5.29.0). I get this error:
calibre, version 5.29.0
ERROR: Unhandled exception: <b>SyntaxError</b>:invalid syntax (calibre_plugins.dedrm.__init__, line 167)
calibre 5.29 embedded-python: True is64bit: True
macOS-10.16-x86_64-i386-64bit Darwin (‘64bit’, ‘’)
(‘Darwin’, ‘20.6.0’, ‘Darwin Kernel Version 20.6.0: Wed Jun 23 00:26:27 PDT 2021; root:xnu-7195.141.2~5/RELEASE_ARM64_T8101’)
Python 3.8.5
OSX: (‘10.16’, (‘’, ‘’, ‘’), ‘x86_64’)
Interface language: None
Traceback (most recent call last):
File “calibre/gui2/preferences/plugins.py”, line 327, in add_plugin
File “calibre/customize/ui.py”, line 477, in add_plugin
File “calibre/customize/ui.py”, line 65, in load_plugin
File “calibre/customize/zipplugin.py”, line 293, 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 185, in exec_module
File “calibre/customize/zipplugin.py”, line 181, in get_code
File “calibre_plugins.dedrm.__init__“, line 167
print u” v: Copying needed library files from plugin’s zip”.format(PLUGIN_NAME, PLUGIN_VERSION)
^
SyntaxError: invalid syntax
Hope you can fix it!
Best regards
Epubor
10/14/2021 09:15:38
Please follow this guide to get this issue fixed: https://www.epubor.com/solutions-to-calibre-dedrm-plugin-not-working.html
Andrea
Re:Calibre DRM Removal Plugins
12/31/2021 04:42:16
Hola, estoy intentando quitar el DRM de Calibre 5.34.0 creado por Kovid Goyal. Intento pasar un kindle a un PDF pero no me deja y me dice “No se puede convertir. Este libro está boqueado con DRM. Para saber más sobre DRM y por qué no puede leer o convertir este libro con calibre, pulse aquí.”¿Que puedo hacer? He intentado buscar en “Complementos de tipo de archivo” el “DeDRM (6.6.3) por Apprentice Alf …. scripts” pero no me sale, ni nada semejante.
¡Gracias por su ayuda!
alex
Re:Calibre DRM Removal Plugins
01/10/2022 14:24:44
The link to DeDrm is fake and a malware
Epubor
01/10/2022 14:34:17
Which software are you talking about?
Mike
Re:Calibre DRM Removal Plugins
07/11/2022 18:13:06
Are we ready for calibre 6?
Paul
Re:Calibre DRM Removal Plugins
07/15/2022 01:08:07
I just tried installing to Calibre 6 and received an error. With this version work with Calibre 6? Thanks.
Reverend Jim
Re:Calibre DRM Removal Plugins
07/17/2022 22:46:04
Here’s the situation.
I have the same version of calibre running on two laptops.
W10 - Windows 10 Home
W11 - Windows 11 Home
- Both have the same version of DeDRM.
- The main library is on the D: drive on W10.
- I have the D: drive mapped to A: on W11.
- I dropped a book on calibre on W10 and it was added to the library.
- I can open and read the book on W10.
- Opening the book on W11 gives an DRM error
W10 has Adobe Digital Edition installed. W11 does not. The book was downloaded from the library and is still within the 21 days I am allowed to read it. I am assuming that is why it is working on W10 and not on W11. I was under the impression that once it was loaded into calibre through the DeDRM plugin that it would be readable anywhere.
Am I doing something wrong?
ab
Re:Calibre DRM Removal Plugins
08/31/2022 01:21:14
Is there any support for other languages like Gujarati or Hindi? As of now, both tools, Calibre and Epubor, only work for books in the English language.
Deborah
Re:Calibre DRM Removal Plugins
11/17/2022 01:28:17
I got an error message when I tried to “open” the downloaded file in calibre. I tried to post the actual message here, but your site kept rejecting the comment because it contained “spam words,” so here’s my best interpretation. The file I downloaded was a .zip file. The error message says that the plugin is invalid because it does not contain a top-level ini .py file. I tried extracting the zip file, but then I got a bunch of .py files and did not know which one(s) to add.
Epubor
11/21/2022 10:59:41
Thank you for using our software. Please don’t unzip the file (DeDRM_tools_7.2.1.zip)you downloaded from our website.
Bill Stout
Re:Calibre DRM Removal Plugins
01/9/2023 06:21:35
I tried to install DeDRM_Plugin.zip Calibre v 6.11 and got the following error:
calibre, version 6.11.0
ERROR: Unhandled exception: <b>SyntaxError</b>:Missing parentheses in call to ‘print’. Did you mean print(…)? (calibre_plugins.dedrm.__init__, line 169)
calibre 6.11 embedded-python: True
macOS-13.1-arm64-arm-64bit Darwin (‘64bit’, ‘’)
(‘Darwin’, ‘22.2.0’, ‘Darwin Kernel Version 22.2.0: Fri Nov 11 02:06:26 PST 2022; root:xnu-8792.61.2~4/RELEASE_ARM64_T8112’)
Python 3.10.1
OSX: (‘13.1’, (‘’, ‘’, ‘’), ‘arm64’)
Interface language: None
Successfully initialized third party plugins: DeACSM (0, 0, 16) && Gather KFX-ZIP (from KFX Input) (1, 50, 0) && Package KFX (from KFX Input) (1, 50, 0) && Barnes & Noble (1, 4, 0) && Check Books (0, 1, 4) && KFX metadata reader (from KFX Input) (1, 50, 0) && KFX Input (1, 50, 0) && Set KFX metadata (from KFX Output) (1, 65, 0) && KFX Output (1, 65, 0) && KOReader Sync (0, 4, 1) && Obok DeDRM (6, 7, 0)
Traceback (most recent call last):
File “calibre/gui2/preferences/plugins.py”, line 325, in add_plugin
File “calibre/customize/ui.py”, line 479, in add_plugin
File “calibre/customize/ui.py”, line 64, in load_plugin
File “calibre/customize/zipplugin.py”, line 307, in load
File “importlib/__init__.py”, line 126, in import_module
File “<frozen importlib._bootstrap>”, line 1050, in _gcd_import
File “<frozen importlib._bootstrap>”, line 1027, in _find_and_load
File “<frozen importlib._bootstrap>”, line 1006, in _find_and_load_unlocked
File “<frozen importlib._bootstrap>”, line 688, in _load_unlocked
File “calibre/customize/zipplugin.py”, line 199, in exec_module
File “calibre/customize/zipplugin.py”, line 195, in get_code
File “calibre_plugins.dedrm.__init__“, line 169
print u” v: Copying needed library files from plugin’s zip”.format(PLUGIN_NAME, PLUGIN_VERSION)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
SyntaxError: Missing parentheses in call to ‘print’. Did you mean print(…)?
Epubor
01/16/2023 11:10:22
Please try the lasted dedrm tool: https://github.com/noDRM/DeDRM%5Ftools/releases/tag/v10.0.3
Ralph Hughes
04/7/2024 01:00:47
I was getting the same error message.
I downloaded the version you suggested and tried again.
Got the same error message.
So, I’d say that we still don’t have a solution for this problem.
Thanks.
Epubor
04/7/2024 10:49:10
Thank you for your feedback. You can try to coment the dedrm plugin developer to fix this issue or you can try Epubor Ultimate.
Morgana
Re:Calibre DRM Removal Plugins
01/13/2023 11:55:33
Hi Everyone,
recently the Kindle app will not allow older versions to be kept and will only allow a book download if the app is upgraded to 1.39 which won’t work with the DeDRM tool (7.2.1). Does anyone know a work around, or if the DeDRM tool is going to be updated to accommodate this?
epubor
01/16/2023 11:40:41
The dedrm is not going to be updated to fix this issue. If you have a kindle eink device, here is a workaround for you: https://www.epubor.com/how-to-remove-drm-from-kindle-kfx-ebooks.html#meth4
F-rat
Re:Calibre DRM Removal Plugins
01/23/2023 23:22:44
Works like a charm, thank you!
Raven
Re:Calibre DRM Removal Plugins
02/16/2023 06:42:54
Thank you!
PeterThePan
Re:Calibre DRM Removal Plugins
04/20/2023 19:18:13
Converting Kindle ebooks without old eInk device
Have a look at kurzelinks(DOT)de/2cta
Works like a charm, just converted 4 Kindle ebooks published after 03.01.2023.
One question: When Calibre is able to extract a serialno. from a .ab-file, isn’t it possible also to use it with epubor? The command “adb shell getprop ro.serialno” shows a serialno. of the device but adding it into epubor only lead to failures.
cpba
Re:Calibre DRM Removal Plugins
06/15/2023 13:47:32
lmao it doesn’t work
Tooty
Re:Calibre DRM Removal Plugins
07/17/2023 22:51:22
This has changed my life!! Thank you so much for the easy to follow instructions!! Happy happy happy!
asmasm
Re:Calibre DRM Removal Plugins
08/16/2023 14:24:00
Hi!
Thank You for the tool. It works fine for Adobe DRM.
But unfortunately it doesn’t work for Readium LCP. I enterthe passphrase I have from booksellerq but the tool is not decoding the book. Could You help?
Epubor
08/16/2023 14:33:24
Hello, thanks for your comment.
Please try to remove LCP DRM from your books by following this guide below:
https://www.epubor.com/remove-readium-lcp-drm.html
Any other questions or concerns, please feel free to contact us via support@epubor.com .
Best regards,
Epubor Team
Tom
Re:Calibre DRM Removal Plugins / NoDRM fork
10/8/2023 04:24:10
This worked, thank you!
annak
Re:Calibre DRM Removal Plugins / NoDRM fork
10/16/2023 12:11:50
I’d love a update on this. I use a tablet with Kindle app (so no kindle number) and Amazon content settings no longer gives you any numbers for devices. I use the PC app to download my files.
Epubor
10/17/2023 09:38:12
Hello, thanks for your comment.
Recently we updated our Epubor Ultimate to a new version, it allows you to decrypt and convert your new Kindle books downloaded by the latest Kindle for PC/Mac.
Any other questions or concerns, please feel free to contact us via support@epubor.com .
Best regards,
Epubor Team
Mitch
Re:Calibre DRM Removal Plugins / NoDRM fork
12/31/2023 23:44:33
Hi there, I have a book I cant deDRM fromeBooks.com.
Calibre cant do that. anyone else struggling with this?
Serrr
Re:Calibre DRM Removal Plugins / NoDRM fork
01/24/2024 01:27:03
please update 10.1.0
cant dedrm books from August 2023
Epubor
01/24/2024 14:15:35
Thank you for your comments. The link of no drm plugin is the latest version, 10.0.9 (RC1 for 10.1.0).
Nyalu
Re:Calibre DRM Removal Plugins / NoDRM fork
04/9/2024 12:34:38
Can remove drm from Cambridge reader epub file
Epubor
04/10/2024 08:55:31
Where did you purchase the cambridge ebooks? If you purchase them from ebooks.com, you can download it with ADE and then remove drm. Please follow this guide: https://www.epubor.com/how-to-crack-ebooks-downloaded-from-ebookscom.html
leandro anabalon
Re:Calibre DRM Removal Plugins / NoDRM fork
06/9/2024 07:43:48
muy buen servicio, gracias, 100% funcional
Epubor
06/11/2024 09:44:16
Thank you for your comments. We are glad to know that your problem has been fixed.
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- Title: Unlock Your eBooks: Explore Non-DRM Repositories Based on Calibre Technology
- Author: Nova
- Created at : 2024-08-20 17:10:57
- Updated at : 2024-08-21 17:10:57
- Link: https://blog-min.techidaily.com/unlock-your-ebooks-explore-non-drm-repositories-based-on-calibre-technology/
- License: This work is licensed under CC BY-NC-SA 4.0.