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How To Show Book Cover On Kindle When Sideloading?

My sideloaded book covers always show as generic thumbnails on Kindle, even after using Calibre or email transfer. Any reliable fix for cover art on sideloaded ePubs or Mobi files?
2026-07-27 00:20:04
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12 Answers

Best Answer
Diana_Simpson
Diana_Simpson
Step 1. Export your file as MOBI or AZW3 using Calibre and verify that your cover image is indeed embedded into your book’s metadata. Occasionally, Calibre will fail to embed the cover into the “book’s internal file”, in which case you will have to use the ‘Polish books’ tool in Calibre (helpfully located under ‘Tools’). If sideloading, make sure that the cover image file you created for your book is stored in the same folder as the book file itself (e.g. ‘The Alpha King’s Mind-Reading Maid.mobi’ & ‘The Alpha King’s Mind-Reading Maid.jpg’). My own experience was with the above-mentioned quick and rather funny fantasy which, upon downloading, needed the cover set correctly in Calibre prior to transferring to my device. The book’s story revolves around a secret-thinking maid of the king who occasionally has to face extreme tension as well as highly comical court politics situations.
2026-08-02
Indara Ospino
Indara Ospino
Is Kindle type a consideration? I'm using a 2009 Kindle Keyboard (3rd generation) and a new Paperwhite. As mentioned previously, the older Kindle is slightly more lenient as to MOBI files and keeping their covers but that's about it. Special offers (or ads) on your Kindle won't affect any content that you've sideloaded to it. The sideloaded content's cover will display separately from the cover that appears when viewing the book's cover in your library. Note: I've found one quirk though. If I add a book to my Kindle (with cover showing), then later open up the same book from 'Archived Items' on my Kindle, or even after I've reset my Kindle to it's out-of-box state, the book's cover is nowhere to be found. In such cases, having a full backup of your entire Calibre library (with embedded book covers) is extremely useful.
2026-07-28
Peyton
Peyton
I'm a bit of a design fanatic, so it's really annoying when book covers don't show up on my Kindle. I use Calibre to side-load books onto my Kindle, but I don't just drag and drop them. Instead, I right-click on the book in Calibre and select 'Edit Metadata' for the book. In there, I can then add in the book's cover manually. For me, AZW3 is the best format to use for covers as it tends to be more reliable at getting the cover to show up than other formats. Then, to double-check for any hidden errors, I use something like Sigil to view the book's metadata.

Rarely is Kindle book cover not showing a problem with the source book file itself but rather with the Kindle device. Unplugging the power cord and restart or even upgrade of your Kindle to latest software (on Kindle.com) can sometimes solve this seemingly “system” issue. For more obscure title sources I have to search for an improved version of the book or even create my own custom cover for it. It’s an irrational need of mine but I get a kick out of it every time I open up my Kindle and all books display perfectly with their corresponding covers.
2026-07-29
Hazel
Hazel
Getting the cover to display properly on the Kindle can be a bit of a challenge but it can be done. Typically the issue is with metadata – Kindle fails to display the cover when the book’s file is not properly formatted for eBook reading. To that end I use Calibre, the excellent free software for managing eBooks. Once I have added a new book to Calibre, I edit the book’s metadata in Calibre to ensure the title, author and cover are all correctly embedded within the book’s file. Then, I convert the book to an AZW3 or KFX file as these file types are much better at keeping the cover of a book. I then send the book to the Kindle using the ‘Send to Kindle’ option (which is usually native to your operating system) or by dragging and dropping the file into the document folder for the Kindle on my computer. On the odd occasion I have needed to do this, a reboot of the Kindle or a change from ‘List View’ to ‘Grid View’ and back again is sufficient to get the book to display with its new cover. A bit of perseverance is required but it’s worth it in the end!
2026-07-29
Ulysses
Ulysses
So I recently spent a bunch of time trying to work out the optimal way to send books with covers intact to the Kindle. I pretty much settled on sending AZW3 or KFX files and using Calibre to add book metadata etc – high resolution cover images embedded correctly etc – and using the “Polish Books” feature to polish up the books.

While emailing a MOBI file to your Kindle often results in a book without a cover, it is far better to use the 'Send to Kindle' app, or to transfer the book to your Kindle using USB. Sometimes the cover doesn’t appear straight away, so after reconnecting the Kindle I wait a few minutes and then reconnect again. If that doesn’t work, I try converting the book to a different format, and it usually works. As for PDFs, I use the 'Convert to Kindle Format' option within Kindle, although this sometimes results in less-than-optimal results. But as each book is a small project in itself, I don’t mind.
2026-07-30

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I totally get the frustration when book covers don't show up properly. The first thing I'd check is whether the book file has an embedded cover. Some sideloaded books might not include cover images, so you might need to use tools like Calibre to fix this. Just open the book in Calibre, edit the metadata, and ensure the cover is properly attached. Another common issue is the Kindle's cache. Sometimes, the device just needs a reset to refresh the display. Go to 'Settings,' then 'Device Options,' and hit 'Restart.' If that doesn't work, try removing the book from your device and redownloading it. Amazon's servers occasionally glitch, and a fresh download can fix the issue. For sideloaded books, converting the file to AZW3 or KFX format often helps, as these formats support better cover display than MOBI. Lastly, if you're using Amazon's personal documents service, make sure the email you're sending from is whitelisted in your Kindle settings. Sometimes, covers get stripped during email transfers. If all else fails, contacting Amazon support might be your best bet—they can sometimes force a cover refresh on their end.

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