The advances of technology and information are growing very rapidly. The challenge of the digital era in Indonesia is able to follow the development of the times through the development of world technology. The development of digital books is increasing from year to year. The teachers gave positive perceptions of the development of digital books. The use of digital books, in particular the Interpol ePub format, has a strategic opportunity to use in vocational learning activities. The interactive ePub format has the advantage of a complete feature in generating interesting and interactive digital books.