Liz Castro
Level 1 (0 points)

Q: Is there a maximum viewport size for an EPUB file in iBooks?

I have noticed that very large viewports sometimes cause iBooks to crash. Is there a maximum size allowed?

 

thanks,

Liz

iPad 2, iOS 5.1.1, iBooks

Posted on Aug 30, 2012 9:46 AM

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Liz Castro

Q: Is there a maximum viewport size for an EPUB file in iBooks?

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  • by JudithT,

    JudithT JudithT Nov 21, 2012 12:35 PM in response to Liz Castro
    Level 1 (10 points)
    Nov 21, 2012 12:35 PM in response to Liz Castro

    The viewport size I use is 512px wide by 768px high for my individual .xhtml pages.  For a two-page spread this would mean the viewport is actually 1024px by 768px.

     

    Yet I paint my original images for a Children's Read Aloud Fixed Layout ePub at 2048px wide by 1536px high and then cut the painting in half for a two page spread.  This means on the new retina display, my images will look great yet be backward compatible with the original iPad.