Calibre DRM Removal Plugins

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Calibre's success majorly depends on those varieties of plugins in my personal point of view. No-doubt the 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.

Today I am going to cover this problem: How to install and use Calibre DRM Removal plugins.

1Install Calibre

Calibre is totally free to download and use, click the buttons below you can download the Windows and Mac versions directly.

Download for multiple platforms click here: http://calibre-ebook.com/download

2Download the DRM Removal plugin

Download the DeDRM Plugin V6.6.1 (released 2 June, 2018) here: http://download.epubor.com/DeDRM_plugin.zip

GUI version for Windows | GUI version for Mac | GUI version for Linux

3Install the plugins 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".

calibre load plugin

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 handle DRMed eBooks.

4The easier way to decrypt eBook DRM

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.


With this program you need not to download or install Calibre and the plugin. Just download and install the Epubor Ultimate, you can decrypt all the books listed above.

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.

Here maybe you are interested in this video about the Epubor Ultimate.


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.

01/18/2014 06:54:01
Thank You!
12/10/2014 12:59:16

If it doesn't work, try to:
1) remove your DRMed books from the library
2) reload Calibre
3) add them again to library

at least this works for me!

12/14/2015 13:34:23
It works in this way. Thanks
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.)

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.
12/19/2015 16:34:54
Thank you. This worked!
03/23/2016 14:56:15
This worked! So easy, thank you so much!
08/19/2016 04:21:14
Thank you so much! You made my day! Your advice work great
08/3/2017 13:23:29
This worked!
-- after adding plugin and restarting calibre, remove the ebook and re upload
08/9/2017 09:20:36
We are glad to hear that!
12/17/2014 20:07:00
El proceso fue fácil y lo logre, pude quitar el DRM
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.
04/20/2016 10:48:26
It works perfectly if follow what PuruPuru tells you to do! Thank you.
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:
1) remove your DRMed books from the library
2) reload Calibre
3) add them again to library
at least this works for me!

11/11/2017 18:40:08
This is exactly what I did and it worked.
05/4/2015 23:13:47
Does the Mac version work, anyone?
05/5/2015 22:59:53
Of course you can run it on Mac, if you have installed Calibre.
06/29/2015 02:23:40
Works fine (win 7 + calibre 2.31[64bit])
08/18/2015 06:46:41
Gracias tras intentarlo con varios con tus plugins y tus indicaciones lo he conseguido.
09/16/2015 02:09:33
Works fine :-)
10/15/2015 04:43:46
Good Job. works fine for drm solved epubs.
11/24/2015 05:45:41
Excelente!! Thanks.
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.
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.
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


06/24/2016 20:50:25
last method worked perfect
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

06/13/2017 12:59:42
Thank you so much. It's easy to install and work perfectly.
06/15/2017 11:50:55
You are welcome!
09/20/2017 04:21:27
Thank you very much, your plugin is working perfectly.
09/20/2017 15:59:05
We are glad to know that it works well.
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.
01/9/2018 17:00:42
Works like a charm! Thank you very much..
05/20/2018 21:54:44
It worked. Thanks.
08/24/2018 10:05:04
Thanks for your feed back. Any suggestions don't forget to let us know.
11/29/2018 02:30:58
superb job
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?
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.
04/20/2019 13:58:49

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!

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