I freed my Kindle library and have it synchronized with all my devices
First, I converted the books to ePub using Calibre. Next, they joined my Obsidian Timeline System for automatic sync across all devices, Supernote included.
Like many other modern conveniences, the Kindle ecosystem is built to keep us locked in. As you know, I’ve been taking down walls around digital goods I won, and now it’s time to do it with my books. This project has been on my list for a long time, but it was a recent feature removal from Amazon that motivated me to finally pull the trigger.
We used to be able to go to Amazon.com and download our Kindle books, but that’s not possible anymore. A while ago, when Amazon announced the policy change, I downloaded all my books. If you haven’t done that, I believe you can still have access to them by connecting your Kindle to a computer and manually coping the books.
But having the books is just part of the process, as the majority of them are linked to your account via what’s called DRM. Additionally, Amazon uses a proprietary format instead of ePub, which is the more widely adopted by e-book readers. In other words, it’s like having your books locked in a box that is locked in another box.
Calibre is the master key that can help us with all of these locks. Additionally, it works as a library management software, keeping all the books in a folder on our computer. That’s just perfect for the Digital Caveman project, right?
When you are first installing the app, it will suggest a folder for your library, but you can change it to what better suits you. In my case, I created a new Static Container (folder) called ‘eBooks’. And because the files in my Timeline System structure synchronize with multiple devices, my library is now widely available. But I’m getting ahead of myself.
As a tip, you can also move the library to a different folder in the future. Just click on the ‘eBooks’ button on the toolbar to choose a new location.

Next, we need to prepare Calibre to be able to remove the DRM from our books. This is done in two parts. First, we need to install and set up a plugin. It’s only after doing this that we’ll be able to tell Calibre to remove the DRM and convert the books to ePub.
Preparing Calibre
- First you have to find you Kindle serial number.
- Then you can follow this instructions to instal the DeDRM_tools plugin
Converting to ePub
With all the above done, go to Calibre’s main window and click on the ‘Add books’ buttons. Select one or more books, and they will be added to your library’s folder.
Next, select one or more books in the list and click on the ‘Convert books’ option. You’ll see a new window with countless details that you can tweak on each book. There are even several formats available in addition to ePub, which is the pre-selected on. In my case, I kept everything as it was and clicked on the button to convert.
The Supernote
To understand how my books are being automatically sent to my Supernote, I suggest watching the video below.
But remember, the books are in my Obsidian Vault. And looking at how Calibre creates folders for each author, I’m already having insights about making those folders somehow connected to other content I have in Obsidian. Specially, the ‘Knowledge Base’ notes, which share a strong relationship with the books I read. And that’s one of the reasons I chose to set the ‘eBooks’ folder as a Static Container.
The Digital Caveman Project
There are plenty of details I still would like to adjust, but all the digital content I create and own is now local first and free from walled gardens. In other words, 100% under my control.
In addition to my notes and website being created in Obsidian, my music, photos, now my books, every single file I use for my personal life and work, and even my passwords, are on my computer first. I even have my own ‘cloud’ system and a backup strategy.
🪨 I did it!