Thursday, October 22, 2020

Kindle DRM Removal Calibre: Remove KFX/AZW/AZW3 DRM with DeDRM Plugin

Are you still trying to remove Kindle DRM with Calibre but haven't figured it out? If you are a Calibre new user, you are probably confused and disoriented the first time you use it. Don't worry. Today here in this post, I will guide you step by step to remove Kindle DRM with the Calibre. This is helpful for both Windows and Mac users (macOS Catalina & Big Sur included).


For successfully removing Kindle DRM, installing the DeDRM plugin and KFX-input plugin is a prerequisite. Therefore, I will show you this guide first.

Part 1. How to Install the DeDRM Plugin to Calibre?

Step 1. Download Calibre and the DeDRM plugin and KFX Input Plugin to your computer.

Step 2. Run Calibre. Click the “Preference” at the top menu bar.

Step 3. In the pop-up Preference window, find the "Plugins" under the "Advanced" option and click it.

Step 4. Tab "Load plugin from file". And then choose the DeDRM_plugin.zip you've prepared.

Follow the procedure and you'll find the DeDRM plugin has been added under the "File Type" option.

Receive a SyntaxError?

If you got a SyntaxError when you were trying to add the DeDRM plugin, it means you are using the Calibre 5.0 or higher version. The DeDRM plugin is not compatible with Calibre 5.0. In this case, please refer to The 3 Solutions to DeDRM Plugin Not Working with Calibre 5.0

The installation of the KFX Input plugin is the same as the DeDRM plugin. When these two plugins are added to Calibre, now we can start to remove Kindle DRM with Calibre.

Bonus Tip - Remove Kindle DRM without installing the plugin:

It's a little bit complicated to install the DeDRM plugin, right? If you are not tech-savvy, or if you prefer a simple solution to get rid of the Kindle DRM, it's highly recommended to try Epubor Ultimate, which is the easiest-to-use ebook DRM Removal and eBook Converter. With the tool, you can easily remove the Kindle DRM without installing any plugins. For a detailed guide, you can just refer to the user guide The Easiest Ways to Convert Kindle AZW to PDF.

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Part 2. How to Remove Kindle DRM with Calibre DeDRM?

What Kindle books are supported by Calibre?

(1). Kindle books downloaded via Kindle for PC V1.26 or lower version, and Kindle for Mac V1.23 or lower version. --This is available for Windows and Mac users (macOS 10.15 Catalina or higher are not included)

(2). Kindle books downloaded via Amazon's official website (you must own a Kindle e-ink device). -- This is available for all users who own a Kindle e-ink device (including macOS Catalina & Big Sur).

No matter where your Kindle books are downloaded, here I can share with you the detailed guide.

1. Remove DRM from Kindle downloaded via Kindle for PC/Mac

Step 1. Download and install the Kindle desktop app to your PC/Mac.

Step 2. Run Kindle for PC/Mac. In the Kindle library, right-click the book covers to download Kindle books to your computer. 

Step 3. Add the Kindle books (in .azw format)  to Calibre by clicking on the "Add books" button. 

And then you need to manually find your downloaded Kindle AZW books in the folder.

Where are Kindle AZW books stored on PC/Mac?

For Windows: C:/Users/your user name/Documents/My Kindle Content

For Mac: /Users/user name/ Library/ Containers/ com.amazon.Kindle/ Data/Library/Application Support/Kindle/My Kindle Content

Failed to remove DRM from Kindle books downloaded via Kindle for PC/Mac with Calibre DeDRM plugin?

If you failed to remove the DRM, you are probably not using the older version of Kindle for PC/Mac. The Kindle eBooks will be encrypted with a new Kindle KFX DRM if you download Kindle eBooks via Kindle for PC/MAC version 1.27 or higher. Now Calibre cannot handle this new KFX DRM scheme. The current solution is to downgrade your Kindle for PC/Mac to the older version and try once again. 

For macOS Catalina and Big Sur users, downgrading to the older version is not working. But you can still use the latest version of Kindle for Mac and patch Kindle for Mac on macOS Catalina or Big Sur to remove Kindle DRM successfully. Or if you have a Kindle e-ink device, you can take the next method.

2. Remove DRM from Kindle downloaded via Amazon website

Step 1. Go to the Amazon page Manage Your Content and Devices.

Step 2. Click the “Action” button in front of each book title, and then click “Download & transfer via USB”.

Step 3. Choose your Kindle e-Ink device, and click the button “Download”.

Note: Please choose the Kindle device you have registered with your Amazon account.

A note will show up when you are downloading the content. You can just save those AZW3 or AZW files on the desktop of your computer.






Step 4. Run Calibre and go to the Peference-Plugins settings. Find the DeDRM under the "File type" option. Double-click the DeDRM to customize DeDRM. Choose "eInk Kindle ebooks".

Next click the add "+" button and input the Kindle Serial Number of your Kindle e-ink device. Then remember to click "Apply" before you close the "Preference-Plugins" window.

(The Kindle Serial Number (KSN) can be found in the Manage Your Content and Device page of Amazon site. Or you follow the detailed guide on How to Easily Find Kindle Serial Number.)


Step 5. When the Kindle Serial Number has been addes, now you can add your Kindle AZW3 or AZW files downloaded from the Amazon website page to Calibre to remove the DRM.

Failed to remove DRM from Kindle books downloaded via Amazon website with Calibre DeDRM plugin?

If you failed to remove DRM from Kindle books that are downloaded via Amazon website, please check whether you have done the following things:

(1) The DeDRM plugin has been added to your Calibre successfully.

(2) The Kindle Serial Number of your Kindle e-ink device has been added to the customization of the DeDRM plugin.

(3) What you own is a Kindle e-ink device. Note that Kindle Fire tablet is not supported.

Bonus Tip - Remove Kindle DRM without manually inputting KSN:

If you are looking for a much easier way to remove Kindle DRM or convert Kindle books without inputting Kindle Serial Number manually by yourself, you can simply plug your Kindle device to your computer and download your Kindle books from the Amazon website. Epubor Ultimate will automatically detect the KSN automatically and you don't need to input it manually. For more details, you can read the full guide on How to Remove DRM from Kindle AZW3 Files.

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