Infographics are commonly used in public health to disseminate key messages to wide audiences. Although health organisations are making increasing use of infographics, their designs are of variable quality. The research reported here aimed to develop an educational tool that could improve public health infographic design, using motion graphics to teach users with limited design experience how to apply research-based design principles. Results were positive, with significant improvements in performance (including information location time, memorability, and user perception) observed for the infographics designed after the resource was used, compared to the infographics created before.