Past research has yielded promising results on the effectiveness of Internet-based interventions to prevent eating disorders (EDs) in adolescents, but further information is needed to evaluate the public health impact of their large-scale dissemination. This article used an established framework to systematically review the extent to which indicators of the reach, effectiveness, adoption, implementation and maintenance [cf. Reach-Effectiveness-Adoption-Implementation-Maintenance (RE-AIM)-framework] of universal and targeted online ED prevention programmes are reported in the literature, in order to estimate their future dissemination potential.