Abstract :
Kawan Pencerita Publisher develops and publishes works by amateur authors. Kawan Pencerita is struggling with marketing so far, as marketing has been limited to the social media network Instagram. Therefore, kawan pencerita wants to develop marketing through website to overcome these problems. Based on this description, this study aims to design and build a Kawan Pencerita Publisher website as a marketing tool. This website was developed as a prototype and then tested by researchers and 11 users in a black box test manner to ensure that it functions well. The result obtained is that the system is 100% functional or all functional aspects required by KP Publisher can be performed according to the project and system requirements. Keywords: black box testing, Kawan Pencerita, prototype, website.