According to a survey, the Court of Justice is the most trusted independent organization. Nevertheless, todayûs widespread use of social media raises doubts about the impact it might have on the image of the Court of Justice from social media users who, in addition to being the recipients, are the messengers at the same time. Therefore, the study of public perceptions on social media engages direct and indirect approaches. The former is to directly distribute questionnaires regarding opinion and attitude to online users, while the latter is to analyze sentiments and cognitive bias of the messages collected from the comments on Facebook pages of the two most popular news agencies within the scope of seven news related to the Court of Justice. The direct method finds that most of the samples have a basic fundamental understanding of the Court of Justice, still many people lack up-to-date information. News and previous information have the most impact on the credibility of the courts. Most online newsreaders choose to ignore other peopleûs comments, or if they opt to read, it is only for studying social trends. According to the indirect method, the commentators critique the actions of individuals or organizations that are the main subject of the news. Their sentiments are often not relevant to the Court of Justice when the news is related to an adjudication or a judgment. However, when some matters concerning judges or the name of a court are the main themes of the news, there will be people who criticize the Court of Justice the most, thus tarnishing the image. The most common cognitive bias is confirmation bias which affirms oneûs thoughts by not listening to others. There are two approaches to improve the Court of Justice image. Firstly, use proactive public relations by reaching people through admin groups to respond to inquiries or misleading messages in comments. Secondly, use passive public relations that allow interested viewers to access the information themselves by providing a central website of the Court of Justice that is easy to access, use and response.