How to Convert KFX to PDF

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Many Kindle books are equipped with DRM protection, and Amazon has transitioned to the KFX format as their new ebook standard. Kindle users frequently inquire whether it's feasible to eliminate DRM from KFX books and convert them to alternative formats like ePub, PDF, Mobi, or AZW3. The answer is affirmative. In this article, we'll delve into the KFX format and provide an extensive guide on converting KFX to PDF.

1. What is KFX Format?

A KFX file is an eBook created in the Kindle Format 10, Amazon's successor to the AZW3 format. It encompasses an Amazon eBook, incorporating both text and metadata that describe the book. KFX files support enhanced typesetting capabilities that are not provided in previous formats, such as hyphenation, improved character placement and word spacing, and a more adaptable page layout and margins.

How to tell if a Kindle book is KFX format or not

If the Kindle book is described as Enhanced Typesetting enabled in its product details, then it is a KFX format book.

books with enhanced typesettings

The KFX eBook downloaded from the Amazon store depends on the device being used to download and read the eBook. It may be saved in the KFX format or in the AZW format.

And KFX books downloaded with Kindle for PC/Mac is saved in AZW format.

kfx content Pc

While it will be saved in KFX format if it is downloaded with Kindle E-ink Reader.

kfx content device

2. How to Remove KFX DRM

Epubor Ultimate is a powerful DRM removal tool designed to effortlessly strip DRM protection from Kindle books. It seamlessly converts ebooks into various formats such as EPUB, PDF, MOBI, AZW3, and TXT, offering versatility and convenience. Read on to remove DRM from your Kindle books.

Step 1Download and Install Epubor Ultimate

Download Epubor Ultimate for free:

Step 2Download Kindle Books via Kindle for PC

Download and install Kindle for PC from the official website. After signing in to your Amazon account. You can initiate Kindle book downloads by tapping on the book cover.

download kindle books

Step 3Remove Kindle DRM

Launch Epubor Ultimate, your Kindle books, downloaded via Kindle for PC, will be automatically imported and displayed under the Kindle tab. Alternatively, use the Kindle tab in the toolbar to auto-detect newly downloaded Kindle books. Select book titles on the left side bar and drag & drop them to the window on the right to remove Kindle DRM.

epubor decrypt kfx

Notice: For Mac users, as most Kindle books adopt the KCR format on the Mac platform, use the Android Studio Emulator to download Kindle books for smooth DRM removal. Refer to our guide for detailed instructions on removing Kindle DRM on Mac

3. How to Convert KFX to PDF

There's a widespread misunderstanding that Calibre can handle decrypted KFX books. However, it's crucial to understand that Calibre cannot open DRM-free KFX files or perform conversions with them. While Epubor Ultimate, the pioneering software is designed to remove DRM from KFX books and seamlessly convert them to ePub, Mobi, PDF, and AZW3 formats. Follow below general guide on how to convert KFX to PDF:

1Decrypt the KFX books using the method mentioned above.

2Select PDF as the output format and click the "Convert to PDF" button. Epubor Ultimate allows batch conversion of all decrypted KFX books listed on the main window, saving you valuable time.

3Easily locate the converted PDF books by clicking on the "Succeeded" tab.

convert kindle to pdf


As Amazon continues its transition of all e-books on its platform to the KFX format, encountering KFX books becomes more prevalent. This article aims to address concerns surrounding KFX files and provide solutions for removing DRM from KFX books. Additionally, it offers guidance on converting KFX books to PDF format, ensuring accessibility and flexibility for readers.

Download Epubor Ultimate for Free

crafts informative articles on eBooks and eReaders, uncovering optimal methods to enhance your eBook reading experience, and eagerly shares her findings with you.

08/8/2020 23:05:57

À chier!

J'ai une license à vie pour epubor KCR Converter for Mac en lifetime license. Ce logiciel n'a été installé que sur mon mac 27". La semaine dernière il me demande renouveller ma licence. Je peux la visualiser ma license sur mon compte epubor ou il est bien stipuler qu'il s'agit d'une license à vie. Mais quand je lance epubor il me demande renouveller cette license.

Le support n'a été d'aucune utilité tout en reconnaissant que j'ai une lifetime license.

Je pense qu'Epubor n'est pas une société honnête.

08/10/2020 11:04:15
Thank you for contacting us. We've already sent you an email to help you fix this issue.
Please don't worry.
09/1/2021 03:44:49

I have tried all 3 methods without success.
How about giving those of us who could not get it to work remote directs hands-on support by us given Epubor Ultimate access to our laptops and desktops.

I will gladly give you full access to my laptop, so you can set it up so Epubor Ultimate works on my laptop. You or I can make a screen recording of it, which you can use as a tutorial for others to see on video. (In case I would make a screen recording of it, I can send it to you via Dropbox.)

Doing that for clients who have difficulties making it work would make Epubor Ultimate very attractive to a wide public and result in the best reviews. And it might not give you more work than replying to emails, chats via Skype, or on the above mentioned website page I copied the link to.

I hope you take up my offer to take control of my laptop to set up Epubor Ultimate right as only one of your technical experts knows how. It would be most effective

09/1/2021 09:25:28
Thank you for using our software. Our technical staff will contact you about this issue. Please check your mailbox to get further assistance.
11/2/2021 05:21:37

Doesn't work anymore.
Reached to the support and asked for a refund.
They sent me a link to this page instead.
Still doesn't work and my money is still gone.

This is a joke.

11/2/2021 09:27:45

Thank you for using our software. Is there any error message? Doesn't work doesn't mean this software cannot handle kindle books? Our technical staff always want to help our customers to fix issue. So please describe your issue clearly and send them to our customer support via support@epubor.com. You can also reach us via livechat at every page on our website to get instant support. Please don't worry. If your choice is refund, you can also ask for refund. We will help you handle all your requests at the very first time.

Thank you for your understanding.

11/19/2021 17:00:02
Ill be asking for  a refund as well
11/24/2021 22:06:29
The Epubor worked for me perfectly! Thanks for help, you're the best!
11/26/2021 10:00:00
Thank you for your feedback. We are glad to know that Epubor software can help you.
04/21/2022 21:58:24
Simply does not work, it saves only the first 20% of the ebook
04/22/2022 10:49:05
That's because you are using the trial version of Epubor Ultimate. To obtain the full content, please just purchase the licensed version.
11/30/2022 16:55:43
I am not a registered user  and using trial version, am not able to convert kfx to pdf, tried all the methods given above. help me to convert my kindle to pdf
04/1/2023 19:24:46
this doesn't work because kindle app force update before being able to download the book
04/10/2023 15:14:58
If you purchase kindle books that published in 2023, you will be required to update the kindle app to the latest version.
04/10/2023 15:15:43
For the ebooks published in 2023, here is still another way to remove drm from this kind of kindle book if you have any Kindle eink device registered with your Amazon account. Please download the Kindle books via "Download and transfer via usb" and then remove kindle drm with Epubor Ultimate. Here is the detailed guide: https://www.epubor.com/how-to-remove-drm-from-kindle-kfx-ebooks.html#meth4
03/23/2024 04:34:33
It removes all the pictures and only leaves you with text. That's no good.
03/25/2024 08:20:17
Thank you for using our software. That's because you are using the  free trial version. This is the trial limits.
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