The Latin American children of the late 1990s and 2000s grew up watching cartoons, just like those decades before; however, for the first time, many of these cartoons were being made by them. That was only the beginning… Benefiting from new digital animation technology and Internet availability as much as from a renewed sense of what cartoons were and for whom, online animation became one of the earliest and most popular forms of online media in Latin America and the world. And yet, their popularity is relatively confined to the Internet and their academic study remains scarce. This thesis aims to remediate this absence and to provide a base from which to give a better account of Latin American online animation. In doing so, it can improve our understanding of other online media’s connection with socio-economic, technological, ideological, and aesthetic imperatives. I highlight the role of economic class and cultural imperialism in online animation’s aesthetic and contents, consider the role of cable networks in both shaping these tastes and offering a precedent for online platforms like YouTube, and review the technological limitations leading to an online animation vernacular (regional and global). I focus on this vernacular’s formal traits as a necessary first step to approach online animation and potentially other media. Ultimately, I provide a socio-economic and techno-historical context for Latin American online animation’s visual culture and its media and geo-cultural specificity. This research is all the more necessary in the face of the impermanence of online media.