The purpose of creating a White Photo College Birthday Event Poster is to inform and persuade potential attendees of a birthday celebration event. The poster highlights key details such as the date, time, location, and theme of the event, as well as including eye-catching visuals to attract attention. The use of white and black color scheme creates a modern and sophisticated aesthetic, suitable for a college environment. Overall, the poster aims to generate excitement and buzz around the event, encouraging people to RSVP and attend.