Marking the book as a personal document (PDOC) instead of an Amazon ebook (EBOK) won't work since Kindle firmware version 5.8.5 (Nov 2016) or later ignores thumbnail images for personal documents.Īs far as I can tell the only fix would be to connect the Kindle again and resend the thumbnail after it has been overwritten by Amazon. And because it is smaller than the smallest allowed cover image size a generic cover thumbnail is instead shown for that book on the Kindle. This overwrites whatever image thumbnail was set by calibre. It appears that Amazon's servers have just been changed to return a 60x40 pixel image containing the text "No image available" instead of nothing. In the past the request for the thumbnail image would fail because the ASIN is not a valid one at Amazon. It does this whether or not a thumbnail for that book is already present. When a new book is found in storage that is marked as an Amazon-sourced book (EBOK) the Kindle software initiates the download of the cover thumbnail for that book based on its ASIN. There is a thread on Reddit about it: All my book covers just disappeared?! BatchPhoto Monitor Rclone UFTP Daemon JRiver Media Center Seafile Rserve. The same thing is happening for AZW3 files. C:Program FilesCalibre2calibre-server.exe. Ive currently tested it only on Windows but it should also work on macOS and Linux. It is based on Kindle Comic Converter and can convert. I can work around by replacing the 'no image found' thumbnail with the cover art (using save cover to disk) on re-plugging-in, but I need to note which thumbnail goes with which book before I eject! I created a plugin for calibre which converts your comic files into an optimized Kindle format. Just checked, when Airplane mode is on, the cover art remains as soon as airplane mode is turned off, the cover art disappears. If I understand correctly, normally the kindle asks amazon servers for artwork for a sideloaded book, so presumably it is now doing this regardless of the presence of art in the thumbnails folder? Looking at the system/thumbnails directory, Calibre is creating a correct image, but after ejecting the kindle and re-plugging-in, the same thumbnail file has been replaced by the 'no image found' amazon thumbnail. The last time I successfully added a book to the Paperwhite must have been within the last two months, has there been a kindle software update since then? The kfx files had previously been uploaded to my old Paperwhite (2018) with working cover art thumbnails but I tested again today and it's now showing the same behaviour as the Oasis. The cover art thumbnails on the home screen briefly appeared correctly but almost instantly vanished and replaced by the default blank cover. Once you've chosen your preferred location, click the "Next" button.Uploaded my kfx files (converted epubs) with Calibre send-to-device to my new Oasis (2019). If you plan to manage your entire eBook library using Calibre, we recommend you use a Dropbox or iCloud Drive folder to store your Calibre Library. You can go with the default location or click the "Change" button to choose a different folder. The first step is to choose a location for your Calibre Library. After you've installed it, the Calibre Welcome Wizard will guide you through the setup process. Go to Calibre's website to download the app. Related: What Is a MOBI File (and How Do I Open One)? Even if you have eBooks in the open ePub format, Calibre will convert the eBook for you before transferring it to your Kindle (as long as you're using a DRM-free eBook). You don't need to worry about downloading files in the MOBI format (which is Amazon Kindle's default eBook format). The best part about Calibre is that it takes care of converting formats. The app is filled with pro-level features but is also easy to use if you want to do something simple like manage your eBook library or transfer eBooks between devices. It's available on Windows, Mac, and Linux. We'll be using the free and open-source eBook management app Calibre.
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