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

887 Views 1 Reply Latest reply: Nov 21, 2012 12:35 PM by JudithT RSS
Liz Castro Calculating status...
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Aug 30, 2012 9:46 AM

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
  • JudithT Calculating status...

    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.

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