This study aimed to develop a web-based Individualized Supportive Developmental Care program for newborns and evaluate the quality of its content and usability. This methodological study was conducted with nurses (n:40). The development of the study website consisted of two phases: submission to experts and evaluation. The website developed in the study received 72.30 ± 9.12 points from DISCERN with the evaluation of the expert group. As a result of the participants' evaluation, the website received 85.05 ± 9.35 points on the System Usability Scale. It was found that the developmental care components (43%) were the sections that attracted the most attention and benefitted researchers on the website. Assessing and managing pain and stress (29%), creating a healing environment (26%), family-centred care (23%), and maintaining sleep (22%) were the most visited sections within this domain. It was found that the content information quality, reliability, and usability of this website developed for newborns were high.