According to a survey by McKinsey & Company in 2013, the main reason Indonesian people use the Internet is for social networking and searching for information. Health-related information is one of the topics that are highly sought, especially by pregnant women. The results of preliminary studies reported the opportunity and need to create a web-based platform that integrates pregnancy information with online booking system and baby registry. To design the content and structure of the website, persona and modified delphi card sorting method are used in this study. Furthermore, conjoint analysis is used to design the look of the website. The sub-elements of user experience used as the attributes of conjoint analysis are informativeness, efficiency, simplicity, delicacy, customer needs, and attachments. Then, system usability scale is used to test the website usability. The result of this research is a web-based platform designed for mothers in their maternity period, which in accordance complies with the mothers' needs and preferences.