EPUB, an abbreviation for Electronic Publication, is an eBook file format primarily used in phones, tablets, computer and other e-readers. Sometimes, distinguished formats do not permit users to access the books and it gets difficult for the readers to access some of their books. PDF files are comfortable, convenient and make reading fun on electronics. But EPUB was introduced with a whole new format and came into focus of public attention. EPUB file format is extensively used in reading software like iBooks in iOS and Google Play Books on Android devices.