I have a new Kobo Libra and bought 2 online epub books. I transferred them onto Kobo by using Calibre. When opening the eBook the layout is fine except that all images appear very small!? I've opened the the eBook in Calibre and there everything looks fine, the images are scaled to a readable/viewable size.

Is this an issue with Kobo, the .epub format or something else?

  • I have the same problem with the Kobo Aura ONE, for what it's worth.
    – pipe
    Commented Sep 23, 2020 at 19:52
  • I have the same problem with the new Kobo Libra 2. My guess is that this is on Kobo. I didn't have this problem on my previous Sony e-reader.
    – PureW
    Commented Feb 6, 2022 at 15:01

2 Answers 2


I found a hacky solution to the problem by editing the eBook's styling using Calibre.

Importing the ebook and then right click on Edit book which opens the actual contents of the book. Now the actual formatting is done via a stylesheet (in my case called stylesheet.css).

In this stylesheet there are the generated properties for the image sizes, e.g.

.calibre95 {
    height: 229px;
    width: 226px

Now the images can be adjusted by editing the height and width of every relevant entry. I've done this via a small Python script since Calibre generated a new entry for each image and there were a lot.

I know this is not a general solution but might help some to fix there books as well


I have been struggling with this exact problem for DAYS and what i did to fix it was so dumb - i looked at the files on my device through my computer's file explorer, and noticed that the two books that were experiencing issues had two files in thier folders - a .kepub.epub and a .epub file. I deleted the .kepub.epub file on a whim and... Full-sized, fixed, beautiful covers!

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