I am using the most excellent PHP library ePub to on-the-fly create digital books from HTML stored in my database.
As these are part of a collection, I am including a cover image for every book. Everything works fine in the code but depending upon the device/software interpreting the ePub, the image may get cut off. I have seen 600x800 pixels as a recommended size, but it still cuts it off (for example in Aldiko in Android). Is there a standard size that is recommended in the documentation?
Honestly, I would love a good and readable recommendation for documentation of the ePub format.