Background: The traditional, paternalistic, paradigm of healthcare delivery is no longer acceptable; with transformation placing greater emphasis on shared -care and decision -making, centred on patients' values, needs and preferences. In this process, patients with cancer often assume a more active role in healthcare. The internet has acted as a likely catalyst and, or facilitator in this process, with proliferation during the global pandemic. Consequently, there has been an expansion of health information being accessed online by patients. A recent scoping review indicated a lack of high -quality evidence -based online resources for head and neck patients, with a paucity of end -user involvement during development. To inform the development and co -design of a high -quality, acceptable online resource for oral cancer patients, aimed at facilitating shared decision -making and treatment preparedness, patients' and healthcare professionals' (HCPs) preferences have been elucidated in this study. Methods: Qualitative research design using semi -structured interviews was employed with patients (n=10) and three focus groups with HCPs (n=21) to understand their perceptions and preference on content, issues to be addressed and key design elements of an online resource to promote decision -making and coping with oral cancer and its treatment effects. Reflexive thematic analysis (TA) was used to analyse both data sets, which were then triangulated. Results: Three key themes were identified from triangulated TA: (I) key objectives and constructs to underpin the online resource; (II) important content to incorporate within the online resource; and (III) design preferences for the online resource. Participants indicated a preference for online content to be mapped across the key landmarks of the cancer trajectory (at diagnosis, during and after treatment); with tailoring and layering of information; presented through a biopsychosocial lens and incorporating patient experience narratives, to aid contextualising of information. Conclusions: This research highlights the need to co -produce online resources with key expert stakeholders, integrating factual information alongside patients experience narratives. Incorporating patients' narrative would appear to be a beneficial source of information to contextualise patient experience, whilst empowering and educating patients to become more proactive in decision -making, self -management and improving health outcomes.