This study aims to determined the effectiveness of the use of digital books in electronic publisher format to train digital literacy of junior high school students. The book used in this study, has been validated in previous studies included in the very feasible category. The method used in this study was one group pretest posttest. The instruments used in the study were observation sheets for the implementation of learning, student response questionnaires, and about the pretest and posttest. Data collection methods are observation, questionnaire and pretest posttest. The data analysis technique uses the Likert scale and N-Gain. Result this research is  feasibility of effectiveness in terms of increasing the digital literacy skills of 13 students who experienced an increase in the high category and 7 students including the moderate category based on the N-Gain score.