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Can I change the cover of a mobi/epub book so that in Kindle or Aldiko reader software, the book cover is shown as my own customized cover?

  • Use calibre for editing the epub. Pls note Changing Metadata of ebook imported in calibre is not changing the ebook files' cover. Though you can edit the epub files in calibre and change it in that interface. Saved ebook will have changed cover – v_sukt Mar 18 '17 at 12:34
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Yes we can do that using opensource software like Calibre.

  1. Install the Calibre software and start the program.
  2. Copy the ebook.mobi file to your PC.
  3. Drag the book onto the Calibre software UI. It will get imported.
  4. Right click and select "edit metadata" for individual book you want to change.
  5. There is option to browse and select the cover that you want.
  6. Save the file.
  7. Right click on the book and select open in directory, now copy the ebook.mobi file.
  8. Go to kindle directory on your device and delete the original ebook.mobi file and paste copied file in that location.

The cover will be updated in your Kindle device. If its not updated try restarting the device. It will work after some time.

The steps for epub files are similar, you will just need to copy the file to a different directory.

(There are other programs like Cigil to edit epub files but Calibre can be used for both formats.)

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Actually, there's an easier way of changing the content:

  1. Change the file extension of your epub book from ".epub" to ".zip"
  2. You will be able to access all content because, now, the file became just a regular zip file
  3. Alter any file you want (including the cover image)
  4. Change the file extension from ".zip" back to ".epub"

Voilà!!!

Extra: You can do the same thing with a ".docx" or ".xlsx" MS Office file... Pretty cool, huh??

  • Excellent! What I fond VERY important was to copy files out of the zip, amend, then COPY them back in. DO NOT UNZIP, MODIFY THEN REZIP as renaming the zip to an epub then produces an invalid epub. Also any new images must be referenced in content.opf. – SharpC Jan 4 at 21:06
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As far as I understand, an epub basically is a web page + css styles + images, etc. compressed. You can modify everything. I've done it with some epub files. It worked.

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