Online social communication currently undergoes several trends. There is a growing ubiquity of mobile devices, so that people are constantly on their mobile phones. They spend a high amount of time consuming online media and exchanging information which is not produced by editorials as it was in the past. Instead, the roles of content consumers and producers are now interchangeable and people create their own content and have the option to share it on several kinds of channels online. Particularly within current social media, the trend shows a shift from a textto image-based communication, visible through the strong growth of the photo-sharing social networking site Instagram, which has now reached more than 1 billion monthly active users. As identified by prior research, images have a strong impact on peoples well-being and self-perception. However, images effects on social media primarily create negative feelings and self-doubt. Yet, people show several motivational factors to share photos online with others, mainly with the focus on self-expression and self-presentation. This thesis focuses on exploring the social interaction on image-based social networking sites through qualitative interviews with Instagram users. As online communication platforms increasingly become visual-heavy, the question arises how people perceive images as a means of communication if a text is not always available or plays a secondary role. The interviews aim to find out how people use images to express themselves, what kind of visual content they look at, how they understand it, how their consumption impacts their perception of reality, and consequently, how they reply to such content. Drawing on the definitions of qualitative research as described by Mason and Witzel and the analytical methods by Braun & Clarke and Mayring, the results of the interviews will provide an in-depth analysis of individuals use of images as a means of self-expression and self-presentation. Vilém Flussers theory of images social impact and the residing codes in them as well as Erving Goffmans ideas and concepts on self-presentation in everyday life are taken as the main theoretical base. Findings provide information on motivational factors and personal intentions behind the use of image-based communication. In addition, it reveals learnings and emerging adoptions of communication standards and how peoples perception is related to their well-being. Moreover, it uncovers issues of the maintenance of personal values and the need to achieve ones goal within an online social environment, particularly in terms of upholding an authentic self-presentation in mind. Moreover, it discusses the differences between textand image-usage and touches the subjects of the role of mobile phones and photographys omnipresence in current social communication.