Quote:
Adobe: To simplify things I would recommend that you only use two formats. PDF is given, since it doesn't convert well. Then I suggest ePub, since that is the format that calibre handles best, and also easily can convert to any other format. But if you have some e-reader device, then you most likely should use a format that device supports.
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PDF viewers for PDF (forget conversion for all but the most simple. Then, it is still LUCK.

)
I use Moon + Pro for EPUB
...but there are choices