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How To Fix Epub Opening Errors On Kindle?
Having weird formatting or unrecognized file issues with ePubs sent to my Kindle Paperwhite. Is it a DRM problem or just a bad conversion?
2025-07-13 05:20:09
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8 Answers
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Dnyss
For Kindle specific errors with .epub formatted files, converting to .mobi or .azw3 using Calibre and then uploading to Amazon using the file or emailing to ‘send to kindle’ and having Amazon’s service automatically convert for you to the correct format for your kindle has always fixed the issue for me quickest. I had a particularly difficult file to read recently that would not open up at all, until emailing to ‘send to kindle’ and reading via the web reader – ‘Accidentally Marked By The Alpha King’ a rather good werewolf shifter romance story where the main character mistakes the Alpha King for his supposed King-of-the-shifters-cousin- from-another-kingdom in need of a ‘mark’ of bonding between Kings, that subsequently causes all sorts of mayhem, heartache and political power-plays between them and the rest of the pack, all read perfectly via Kindle’s web reader once converted.
2026-07-31
Willa
I use Kindle Previewer to convert my EPUB files to versions that can be read on my Kindle. This Amazon-created tool is free to download and can be used to create MOBI or AZW3 versions of your EPUB. Also, in the Kindle App on PC, you can simply drag and drop an EPUB file to convert it to a read-on-your-kindle format. If the file is corrupt, try downloading it from a different location. Once you’ve converted your EPUB, try sideloading the file onto your Kindle rather than emailing it – this usually works when emailing fails to open the file.
2025-07-15
Quinn
Fixing EPUB errors on Kindle can be a little tricky but I have it sorted. Since Kindle does not natively support EPUB I convert it using the Amazon Send to Kindle service. You just need to email the EPUB file to your Kindle email address with the subject ‘Convert’. Amazon then do the rest for you. Alternatively I use the online service called Online-Convert. It is pretty quick. I upload the EPUB, select MOBI as the output format and then download the converted file.
First, be sure that the EPUB file itself is not damaged; a tool such as EPUBFix can sometimes fix corrupted EPUB files. Make sure your Kindle is on and connected to Wi-Fi as well as that it has sufficient storage space. If none of these steps work, then you can try sideloading the converted file onto your Kindle using your USB cable. After a bit of practice, this process is quite painless.
First, be sure that the EPUB file itself is not damaged; a tool such as EPUBFix can sometimes fix corrupted EPUB files. Make sure your Kindle is on and connected to Wi-Fi as well as that it has sufficient storage space. If none of these steps work, then you can try sideloading the converted file onto your Kindle using your USB cable. After a bit of practice, this process is quite painless.
2025-07-16
Finn
Those EPUB files are so often incompatible with my Kindle. My work-around is to have the Kindle convert the EPUB file for me – I just email the file to the Send to Kindle email address listed in my Amazon account settings and Amazon does the rest. If that doesn’t work, though, I tend to rely on Calibre to convert the file to MOBI format. Once converted to MOBI format, I just drag the file to the documents folder on my Kindle, via USB.
Another thing to be aware of is that some EPUBS can become corrupted at some stage during the process. Hopefully they will open in the reader that you used to view the unconverted file, if not then try to open them in an EPUB reader such as Adobe Digital Editions. Some files may also have DRM (Digital Rights Management) attached to them which will need to be removed before you can convert them. Also make sure that your Kindle is up to date with the latest Kindle firmware as this will help to prevent any compatibility issues.
Another thing to be aware of is that some EPUBS can become corrupted at some stage during the process. Hopefully they will open in the reader that you used to view the unconverted file, if not then try to open them in an EPUB reader such as Adobe Digital Editions. Some files may also have DRM (Digital Rights Management) attached to them which will need to be removed before you can convert them. Also make sure that your Kindle is up to date with the latest Kindle firmware as this will help to prevent any compatibility issues.
2025-07-17
Paige
I’ve run into the problem of EPUB files not opening on my Kindle a few times. After a while, I came up with a number of ways to solve this problem. The main thing is that EPUB is not a native file format for Kindle. Therefore, we need to convert it to MOBI or AZW3. For this, I use a free program called Calibre. I just drag the EPUB file into the window of the program, select “Convert Books” and choose the necessary format (MOBI or AZW3). After that, I transfer the obtained file to the Kindle via USB, or send it to the Kindle address via email.
Corrupt EPUB files can be a problem too. Check to see if you can download the file again from a different website, or convert a different copy. If you are having problems opening an EPUB file after converting it, then the file may have had DRM (Digital Rights Management) protection on it. You will need to use a program such as Epubor Ultimate to remove the DRM protection from the file before you can convert it to read on your Kindle. Make sure your Kindle is up to date too – many compatibility problems with EPUB files are caused by outdated firmware.
Corrupt EPUB files can be a problem too. Check to see if you can download the file again from a different website, or convert a different copy. If you are having problems opening an EPUB file after converting it, then the file may have had DRM (Digital Rights Management) protection on it. You will need to use a program such as Epubor Ultimate to remove the DRM protection from the file before you can convert it to read on your Kindle. Make sure your Kindle is up to date too – many compatibility problems with EPUB files are caused by outdated firmware.
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The majority of formatting problems that arise with eBooks arise from conflicts between an eBook’s CSS styles and the eBook reader’s default styles. Open your EPUB in an editor (such as the built-in editor in Calibre), open the eBook’s CSS file and simplify it by removing all declarations with ‘!important’ from them. Set the body margin to zero. Define a solid font-family stack. Make sure all your measurements are set up in ‘em’ or ‘%’ rather than fixed ‘px’. Because a Kindle book is read off of screens of varying sizes, using relative units to measure rather than fixed pixels is key to fix formatting issues such as having every other paragraph centered for no apparent reason as I encountered in my last upload.
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