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Old 04-20-2013, 01:46 AM   #1
RZetlin
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Anyway to zoom in on epub images?

I recently bought a "How to Draw Manga" book from the Kobo book store.

The entire book is consist of scanned images.

I noticed the kepub has the option to zoom in and resize images.

Is there a option to zoom in and out/resize images on a normal epub format?
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Old 04-20-2013, 02:15 AM   #2
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Originally Posted by RZetlin View Post
Is there a option to zoom in and out/resize images on a normal epub format?
No. If the images are the wrong size (too small) then that can usually be fixed by editing the epub before sideloading it. But to be able to zoom on the device you would need to convert the epub to kepub.epub before sideloading it. For a book that is nothing but scanned images then other formats such as cbz might be more suitable.
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Old 04-20-2013, 03:17 AM   #3
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No. If the images are the wrong size (too small) then that can usually be fixed by editing the epub before sideloading it. But to be able to zoom on the device you would need to convert the epub to kepub.epub before sideloading it. For a book that is nothing but scanned images then other formats such as cbz might be more suitable.
How do I convert an epub to kepub.epub?

I don't see such an option in Calibre.
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Old 04-20-2013, 03:28 AM   #4
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How do I convert an epub to kepub.epub?

I don't see such an option in Calibre.
It is not part of the standard Kobo device plugin because there are still some issues with it, but there is an extended driver at https://github.com/jgoguen/calibre-kobo-driver.

If you use it remember that this is not in any way supported by Kobo, in fact they have exlicitly warned against doing this.
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Old 04-20-2013, 04:26 AM   #5
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It is not part of the standard Kobo device plugin because there are still some issues with it, but there is an extended driver at https://github.com/jgoguen/calibre-kobo-driver.
Joel (the author) has also started a dedicated plugin thread in the Calibre plugin section.
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Old 04-20-2013, 10:17 AM   #6
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How do I convert an epub to kepub.epub?

I don't see such an option in Calibre.
Quick and dirty technique to test the idea is just to rename the file from whatever.epub to whatever.kepub.epub on your device. The plugin does some other tasks as well but sometimes quick and dirty works.

Regards,
David
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Old 04-20-2013, 11:32 AM   #7
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Quick and dirty technique to test the idea is just to rename the file from whatever.epub to whatever.kepub.epub on your device. The plugin does some other tasks as well but sometimes quick and dirty works.

Regards,
David
I get mixed results when I rename the epub as .kepub.epub.

The book cover doesn't show up anymore. In it's place is a tiny dot.

Page refreshes every time when the page is turned instead of using the page refresh settings.

I get the resize/move functionality, but the default images appear too large and goes onto next page. (I was able to fix the image size in Sigil by changing the image size properties of width and height).

-------------

Update: Using the extended kobo plugin for calibre seem to have resolve the book cover issue.

But I can only get the image to be about 3/4 of the screen. Anything larger will cause the image to be cropped and appear on two pages.

Best results so far is to use the PDF format, but I don't have the option of a table of contents.

Last edited by RZetlin; 04-20-2013 at 02:01 PM.
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