Facts.hk is an online knowledge and curiosity website that presents concise collections of facts and explanatory articles across a wide range of subjects. Its content is organized into searchable categories, making it easy for readers to explore science, nature, history, health, culture, society, technology, geography, sport, food, and entertainment. The site publishes themed fact lists alongside articles about people, events, places, organizations, and everyday questions, with examples ranging from astronomy and biology to music therapy, Hong Kong landmarks, and social services.

A daily facts section highlights topics associated with yesterday, today, and tomorrow, while recent and popular content helps visitors discover new or widely read subjects. Readers can browse by category or date and use the site’s search function to find material of interest. Facts.hk also provides links to versions in multiple languages, including English, Japanese, Korean, and several European and Asian languages. Its core offering is accessible informational content designed to make learning and casual discovery convenient for a broad audience.