This study examines how the design and content of printed educational materials (PEMs) influence clinician capacity to deliver evidence-based sexual healthcare. General practitioners in New South Wales, Australia (n = 214), completed a survey about their use and perceptions of PEMs - a clinical aide, sexual health articles, and an educational booklet. Over half used all three; of these, most recognised changes in knowledge and/or practice. Perceptions about resource design and content collectively explained more variance in perceived impact than independently. However, views about content were a stronger predictor of the perceived impact of the clinical aide, while views about design were a stronger predictor of the perceived impact of the articles and booklet. Clinician perceptions about PEM design and content have different effects on practice. As such, the promotion of evidence-based practices should be guided by resource-type and audience expectations.