Most studies on the emphasis on the teaching of foreign languages indicate that little attention is paid to prossodium aspects in both teaching materials and teaching and learning processes (Martinsen, Avord, de Tanner, 2014). In this context and throughout this article, an analysis of the educational and technical dimensions of OJAD (Online Japanese Accent Dictionary) is carried out, linked to a project of the National Institute for Language and Language in Japan led by Minematsu (University of Tokyo). With the collection of data and information by means of an adaptation to the CEETP Questionnaire for the Assessment of Didactical, Technical and Pedagogical aspects of Webs Didácticas de Cabello, Martínez-Segura and García Sánchez (2013) and supported by studies and investigations by the teams responsible, an analysis of the website is carried out to highlight its positive aspects and to be reviewed from an educational point of view. In general, OJAD is a tool linked to the teaching of the Japanese language, which is accessible, systematic, with great potential in terms of search criteria and user adaptation.