Assume that an author is about to launch an ebook. In order of priority, what are the most widely-readable file types, in terms of actual users? In other words, to make the book available immediately to as many human beings on ereaders as possible, which files must the author produce?
My working assumption has been that
.epub would cover the overwhelming majority of people using an ereader, but I am wondering if that is incorrect.
- My question is not, "How many ereaders/platforms/software packages can read
.xyzfiles?" It is, "How many people can read my book if I publish
- My question is specific to making the book widely available in ereader-friendly formats. Obviously, with a couple of ereader formats plus
.txtversions, one can get universal readability. I'm asking, what does one have to do to get near-universal readability in ereader-friendly forms that offer at least some formatting capabilities?
Edit: Answers should include statistics whenever possible. The goal is to go beyond the conventional wisdom and get into whether that wisdom is correct.