Abstract
Children affected by genetic conditions and their families have high needs for accessible and emotionally sensitive digital health information. However, most digital resources fail to meet the specific needs of children aged eight to twelve. This case study aimed to evaluate and improve the content and usability of a genetic information website for children (ikhebdat.nl). Five think-aloud sessions were conducted with parent-child dyads to identify usability problems and content gaps, along with a co-creation session with three children living with a genetic condition. Results show that while the website was generally perceived as educational, engaging, and visually appealing, there is a need for visual hierarchy, intuitive navigation, empathic language, and peer-based video content. This case offers design recommendations for child-oriented eHealth tools that go beyond readability to include emotional resonance and autonomy support.