MOBI (short for Mobipocket) is a reflowable ebook format. Unlike PDFs, which have a fixed layout, MOBI text adjusts automatically to fit the screen size and orientation of your device.
This platform offers a free tool to format and convert manuscripts into MOBI, EPUB, and PDF formats. 3. How to Download and Transfer MOBI Files Download File (MOBI)
Amazon has largely moved to the AZW3 (Kindle Format 8) for newer books. MOBI (short for Mobipocket) is a reflowable ebook format
The Complete Guide to MOBI Files: Creation, Conversion, and Downloads which have a fixed layout
The Amazon Kindle App (available for PC, Mac, iOS, and Android), Mobipocket Reader, or Stanza.