This study aimed to develop a self-directed website for people to register for self-exclusion from gambling venues. The interviews and focus groups asked participants for their opinions about website features and functions, and practical issues that could affect its uptake. Five participants were people with lived experience of gambling problems and self-exclusion. The rest were professionals with relevant work experience. Participants expected the website to be user-friendly, supportive, trustworthy, and tailored to the needs of end users. Participants outlined core functions and support features that the website should have (e.g., high data security measures).