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Unable To Read EPUB ebook file. #4720

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planetkalpesh opened this issue Dec 13, 2024 · 1 comment
Open

Unable To Read EPUB ebook file. #4720

planetkalpesh opened this issue Dec 13, 2024 · 1 comment

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@planetkalpesh
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SumatraPDF version

  • Latest SumatraPDF pre-release build version 16779, built on 2024-08-23

Describe the bug
Unable to read EPUB ebook file. I have tried opening in MuPDF 1.25.2 it gives same result unable to read.

File that reproduces the problem
Since the file is large, I have uploaded the file here:
https://www.mediafire.com/file/cmc8il3llygfjnp/Kristin+Baver_+Jason+Fry_+Cole+Horton_+Amy+Richau_+Clayton+Sande+-+Star+Wars+Timelines_+From+the+Time.epub/file

@GitHubRulesOK
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GitHubRulesOK commented Dec 13, 2024

If its non openable in MuPDF then it is likely faulty (usually such are a Calibre pirate version 3 of Kobo fixed Format) and thus cannot to be usable in SumatraPDF If you think it is a MuPDF bug it needs to be raised at their Bugzilla support channel.

Check the description. usually the official version may include

Due to the complex integration of images and text, this DK eBook has been formatted to retain the design of the print edition. As a result, all elements are fixed in place, but can easily be enlarged by using the pinch-to-zoom function. For previewing rotated pages or spreads, please lock screen rotation in your device first. If you are previewing this eBook on a mobile phone, portrait mode is recommended. If previewing on a tablet or larger display, landscape mode will allow you to see facing pages at the same time (two page view).

Usually work well in QT /Web systems as heavily rescaled, such that the fonts will be ginormous and exceptionally bloated for rendering exceptionally slowly off the page.

-webkit-transform:scale(0.035222);
	-o-transform:scale(0.035222);
	-ms-transform:scale(0.035222);
	-moz-transform:scale(0.035222);
	transform:scale(0.035222);

You can see the browser characters are 2000 units high !!!

image

When correctly converted to PDF (look at the page size it is comparatively about A2) the "embeded fonts" may be seen different so the text internally is lowercase but the font as Glyphs is ALL CAPS

image

Due to the use of small fonts at 100% the larger page would need something like a 4 K monitor
image

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