NTUWAS has a selective scope. National Taiwan University Library does not collect all Taiwanese online publications and websites, but select those considered of significance with long-term research value. For users' convenience, NTUWAS built 10 categories:
National Taiwan University：National Taiwan University related websites.
Government Agencies：The Republic of China (Taiwan) government related websites.
Academic and Education：Other universities, academic institutions and educational institutions related websites.
Art and Culture：Arts, museums, religious and other cultural related websites.
Politics：Political parties, diplomatic Mainland China, and global related websites.
Ethnic Groups：Indigenous peoples, Hakka and other ethnic group’s related websites.
Economic and Technology：Industrial and technological development related websites.
Incidents：Significant events and issues related websites.
People：Significant and important individuals related websites.
Non-governmental Organizations (NGO)：Public interest groups and other Non-Profit organizations related websites.
Apart from the above 10 categories, NTUWAS has the other two features.
1. Research Issues：For academic requirements, NTUWAS will collect significant academic related websites;
2. Significant Events：To preserve immediate contemporary events in global, NTUWAS will collect significant and important event related websites.