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EBook & Audiobook Formats

Here are the current media BOOK.io supports

Currently, BOOK.io supports ePubs and standard Audiobook files. 
Soon we will be able to support PDF, flowable epub, podcasts, and video (Sister site stuff.io)

Creating your own covers?

  • EBooks: 4k tall with a 3:2 ratio.
  • Audiobooks: 620 x 620