Researchers developed iSupport-Malaysia, a multimedia web platform adapting the WHO's dementia caregiver education program for Malaysian culture and language. Testing with 24 participants—including informal caregivers and healthcare professionals—revealed a usability score of 74.3%, with most tasks completed independently. Users praised interactive learning features, peer discussion capabilities, and self-paced learning options while finding content culturally appropriate and credible. This digital intervention addresses a critical gap in dementia caregiver support across Malaysia, where access to specialized resources remains severely limited. The multimedia approach represents a significant advancement over traditional text-based formats, potentially improving engagement and knowledge retention among caregivers who shoulder immense psychological burdens. However, this preprint study awaits peer review, and the findings reflect development-phase feedback rather than clinical effectiveness data. The relatively small sample size and focus on usability rather than health outcomes limit broader conclusions. While promising for accessibility and cultural relevance, the platform requires larger-scale trials to demonstrate actual reduction in caregiver stress, improved care quality, or better patient outcomes before widespread implementation.