The research in this thesis was made with the aim of gaining a better understanding in the field of purposefulness, functionality and the way of using of e-portfolios in institutions for early and preschool education. The method of action research was used as the most relevant model for the introduction of a relatively new approach in keeping individual documentation of children's activities and achievements in institutions for early and preschool education. The research was done through several phases. In the first phase, an individual e-portfolio was created for ten preschool children, which was filled out in the period from January to June, then the e-portfolios were shared with parents and preschool educators for review, after which parents filled out a questionnaire in to which they expressed their own views and satisfaction with the e-portfolio, and an interview was conducted with educators within the focus group. After the research, it was found that both are quite satisfied with the categories contained in the e-portfolio and believe that it is of great help in enrolling preschool children in the first grade of primary school. Parents stated that, based on the data from the portfolio, they will participate in various ways in strengthening children's talents and areas in which they are good, and additionally work on categories in which their child lags behind. The research also showed that none of the educators use the e-portfolio for the purpose of recording children's development and achievements, however, they expressed a desire to apply it in the future and reached a joint agreement on launching an initiative to implement an e-portfolio for documentation. development of all children from groups, for educators of the Kindergarten "Cvrčak" Solin who show interest in using this model. Based on the results of the research, the initial version of the e-portfolio will be adjusted to a lesser extent for its future use.