Quote:
Originally Posted by sydmalicious
ePubs are generally portable, kepub isn't,, AFAIK. Have to be absolutely certain you'll never use another e-reader.
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Bascally, a kepub is an ePub with added spans for location. Those spans are treated as nulls by an ePub reader so a kepub is as portable as an ePub. There is also the possibility that a kepub may have embedded Javascript but I haven't seen one of those in quite a while. Again, if your ePub renderer does not implement Javascript support, any Javascript elements will be diregarded.
The other real difference is the that the webkit renderer Kobo uses for kepubs is an ePub3 renderer based on the Readium code which handles quite a bit more of the ePub3 specification than is handled by Adobe's newest ADE/RMSDK products.