A significant advantage of eBook reading device is the capacity, even with a basic version of Kindle, you can hold thousands of eBooks with this handy size device. But every coin has two sides. As you keep adding more and more ebooks to your device, storage space will run out soon. What's worse, you need to spend a lot of time finding the book you want to read, it is high time that you should delete / remove kindle books.
Kindle delete permanently vs remove from device: In general, the difference between "Delete" and "Remove" is that "remove" only deleted the history for the book(we can retain them in the cloud for later), while "Delete" will delete books from the MYCD library.
Delete/Remove books on Kindle (Kindle Paperwhite, Voyage and Kindle Fire)
Delete books from Kindle
This is the cheapest model in Kindle family at the moment which only costs you $69, what a bargain! I bet you will never regret to have it.
To free up space on your Kindle, you can archive items by selecting the item’s name on the Home screen and pressing the Left Arrow on the 5-way controller. Select remove from device, and press the center of the 5-way controller.
(Tips: The model has a 5-way controller and 4 buttons at the bottom)
Delete books from Kindle Keyboard
Press the Home button>>>move the 5-way controller to underline the item you 
want to remove.
Then move the 5-way controller to the left to remove the item. For books purchased from the Kindle Store you will see “remove from device” and for all other content you will see “delete”. Press the 5-way controller to remove the content. To change your mind, move the 5-way up or down to cancel the deletion. Notic that Kindle books are backed up for you at Amazon even if they are removed from the device. And for content other than books purchased from the Kindle Store, you will need to confirm the deletion of the content by selecting “ok.”
Delete books from Kindle Paperwhite
To clean up your library on Kindle Paperwhite, you can remove items by pressing and holding the item’s name or cover on the Home screen. When the dialog box appears, tap Remove from Device. This option will vary depending upon the content. Your content will remain stored securely in the Cloud for download at a later time
Delete books from Kindle Voyage
It's not complicated to delete books from Kindle Voyage, you just need to press and hold the title which you want to remove for one or two seconds, When a menu pop up, select "Remove from Device", then the book will be deleted on your Kindle Voyage. If you want to read this books again, you can download it from Kindle Cloud again.
Delete books from Kindle Oasis
If you want to delete a recent book Kindle Oasis, go to your home screen, otherwise head to your Library/search box to find the title(s) you want to get rid of. Just press and hold the name for a couple seconds until a box appears with a list of options, select “Delete This Book”.
The content transported to your Kindle Oasis via USD will be deleted permanently in this way. But you can still resync the delete books purchased from Kindle Store or Pushed to Kindle via email.
Delete books from Kindle Fire (HD)
To delete books from Kindle Fire, simply press and hold on an item to display the contextual menu, then select Remove from Device. Content purchased from Amazon will remain stored in the Amazon Cloud in case you want to download it again at a later time.
Tip: How to redownload Kindle books to Amazon Kindle again?
Books are still stored on Amazon cloud though they were removed from your device. So it's possible to redownload them onto your device again. just click on "MY LIBRARY" on the home page. Then choose "ALL" button in the top-right corner, next select the book you wish to redownload.
Of course you can also re-download your Kindle books through your Amazon account. From "Manager your Content and Device" tab click the "Actions" button, select the "Deliver to Default Device or Others" option.
Delete books from Kindle devices in batch
Since 11 November, 2017, Amazon rolled out a new Firmware Update 5.9.2.0.1 for its Kindle ereaders, like Kindle Oasis 2 (KO2), Kindle Oasis (KO), Kindle Voyage (KV), Kindle (Kindle 7), Kindle (Kindle 8), Kindle Paperwhite 3 (KPW3) and Kindle Paperwhite 2 (KPW2), which allows you delete Kindle books in batch.
To delete Kindle books in batch, you need to go to Home — Menu — Settings — Device Options — Advanced Options — Storage management — Manual Removal. Then You can manage your device storage by choosing the items you would like to remove.
Or you can also go to Home — Menu — Settings — Device Options — Advanced Options — Storage management — Quick Archive to quickly remove content from this device that has not been opened for the last 1/3/6 months, 1 year or more.
Amazon adds storage management to the new firmware, though it’s a small function, it’s really convenient for Kindle users who need to clean their storage frequently. Compared to Manual deletion, Quick Archive will easily your contents by accident. If you can’t remember all the contents in your kindle local disk, please don’t try this method.
If you want to delete books from Kindle devices in batch, make sure the Kindle firmware is 5.9.2.0.1 or above version. You can automatically update software firmware to 5.9.2.0.1 version or above on your Kindle device or download Firmware 5.9.2.0.1 manually from Amazon website.
Notice: All the methods above just delete the books from your device. If you want to delete them completely, you need to remove them from Kindle Cloud.
Delete books from Kindle app(Android, iOS, Windows, Mac)
Delete kindle books from Kindle Android app
To remove content from your Kindle app which installed on Android device, just find the book you want to remove from your Kindle app for Android, tap on the book cover that you want to delete for 2 seconds, then choose "Remove from device".
Delete kindle books from Kindle iOS app
You can delete books from your iPad, iPhone or iPod touch so you don't have to use your device's memory space to store them.
To remove individual book from Kindle for iOS app, simply tap and hold the cover of the book, and then tap "Remove from device" which in fact is the only choice for you.
Delete kindle books from Kindle App for Wins/Mac
To remove individual book from Kindle for PC/Mac, right click the book cover, and then select "Remove from device" in the pop-up menu.
Tips: For a book synced from cloud, the pop out choice is "Delete permanently". For a book only exist on your device, it will be "Remove from device".
Content that is purchased from the Kindle Store is archived and can be re-downloaded at any time; sideloaded content and personal documents that are not archived in your Kindle Library are permanently deleted.
Delete Kindle books by deregistering your device
When we want to re-sell our Kindle device, or the Kindle device is lost or stolen, the safest way to protect our contents is to deregister our device from Amazon.
Go to "Manage Your Content and Devices" page >>> select the "Your Device" tab. Then click on the grey button "Device Actions" >>> select "Deregister".
Please keep in mind that this will remove all the contents from your device. You are not able to download or buy any more until your device is registered with another Amazon account.
Delete books from Kindle Unlimited
With Kindle Unlimited we can borrow books (up to ten books) but no need to pay for them. But once finished reading, they will be still saved in our account. In this situation we can delete them from Kindle Unlimited history.
You just need to "View My Kindle Unlimited Library", and then "Return this book".
Tips:
1. Kindle Unlimited allows you to borrow 10 books at a time. So if you borrow more than 10 books, you will be asked to delete one in Kindle Unlimited library.
2. Books will be gone when you cancel your Kindle Unlimited subscription.
Delete books from Kindle Cloud: delete kindle books permanently
Update: If your Kindle firmware was updated to 5.12.5, there’s also the option to permanently delete purchased ebooks and personal documents from the Kindle itself.
Before you do this, please make sure you understand that if you delete a book from your Kindle Cloud, you will not be able to read it any more unless you purchase the book again. In other words, you are giving up your ownership of this book by deleting it from your Kindle Cloud.
If you navigate to this part, I can see you really have a pretty strong mind to clean up your Kindle archives. Now let's remove contents from Kindle Cloud permanently(deleted them off the website).
1) Login to Amazon.com and go to "Manage Your Content and Devices" page. In this page you can see all the items in your Kindle Cloud, which means they can be synced to all your registered Kindle devices and apps.
2) Select the books you want to delete, and then click on "Delete" button.
3) Then it will pop up a warning window, click "Yes".
Wrapped up:
If you delete books from Kindle Cloud, you can never have the books back. This means that you have to purchase for a second time if you want to read them again. Still want to delete kindle books from your Kindle account but need a back-up? Please use Epubor Ultimate tool which helps remove the drm from your Kindle books and back up them to your computer for good.
That's all. Now you free up your Kindle and manage your Kindle library.
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.
If you keep a book on the device, and directly delete it in Kindle Library Management page, then the book on your device will not disappear. But if you delete a book on both device and Kindle Library Management page, you are not to able to download it again.
And you also need to delete them on your device. And make sure you hadn't sync other contents.
Delete books definitely won't take more space.
However, you may want to make a note of the following: as I was deleting titles from my device page I noticed that the dialogue box that popped up said something different than what you quote here. It said: "Delete Permanently" over "Add to Collection". As I was only deleting samples and one (horrid) book that I got by mistake I opted to click on Delete Permanently. You might want to check this out. It could be different post OS 7.
Again, thank you.
Hi,
If the book is synced from your cloud library, then you will see "Remove from Devide".
If the file doesn't exist in the cloud but just on your device, you will see "Delete permanently".
However, I will explain this in the article. Thanks for your feedback.
The books have been deleted, but the icons still show, but with a cloud impression
The cloud icon indicates the book is still remain in your Kindle cloud library.
If you want to get rid of it, please refer the method about deleting kindle books permanently.
Thank you
FINALLY I stumbled upon a solution. The images are cached under the appdata file. I got all the 'ghost' content off my PC by deleting the cache file. Then I opened the app and re-synced.
SO step by step: 1. Find your Kindle XML File named "KindleSyncMetadataCache.xml"
It will be located here (the default location): C:\Users\YourUserName\AppData\Local\Amazon\Kindle\Cache
"YourUserName" will be your username on your computer. 2. Delete the file. It will regenerate when you next open and sync the kindle app. Now your PC kindle app will match whatever you have in the cloud.
I've spent hours over the last few years trying to deal with this. Much appreciation.
How can I delete book funnel books downloaded on my kindle app on my Samsung 6 tablet.
The delete or remove from device does not show up as an option
Thanks