Regional tourism is currently receiving a great deal of attention in Japan. When contemplating regional revitalization through tourism, an important key is to attract tourists more effectively at a lower cost. In this study, I conducted a survey on attracting tourists online and measured the effect. I displayed ads on search results of keywords related to regional tourism, such as "tourism Noto", "Noto tourism", and "Nanao tourism", and used these ads to attract participants. First, I developed a website to introduce tourism and gourmet information about the Noto region. Then, I measured the percentage of visitors who visited a download (PDF brochure) site through the keyword advertising described above. The keyword advertising was classified into two categories, and the relative cost-effectiveness of each category was examined through a comparison.