Socialization to international norms has a symbolic and visual dimension. Even if Europeanization has long been understood as a process of norm diffusion, scholars have largely overlooked its visual dimension. In this article, we fill this gap by analysing the effect of EU membership on the most visible symbol of political parties: their logos. To that end, we analyse 747 party logos in three groups of countries: member states that joined the EU in or after 2004, candidate members, and Eastern Partnership (EP) states. Specifically, we looked at logos in four different moments: the two national elections before and after the membership, or the issuing of the candidate status, or 2004 for countries in the EP group. Then, we coded all logos for the presence/absence of nationalist, European, extreme ideologies and religious symbols, the country flag, and the colours of the flag. By employing logit and difference-in-differences models, we show that parties in countries that joined the EU often removed nationalist symbols from their logos after the membership, an effect largely absent for parties in candidate and EP countries. We demonstrate that this Visual Europeanization effect does not depend on other factors such as democratization or economic growth, and that descends from both population effects, namely the disappearance of old parties and the creation of new ones, and from existing parties’ rebranding strategies. Our findings contribute to the scholarship on visuality and norms, the domestic implications of European integration, party politics in Eastern Europe, and images-as-data approaches in Political Science.