A page view is each time a visitor views a webpage on your site, irrespective of how many hits are generated. Pages are comprised of files. Every image in a page is a separate file. When a visitor looks at a page (i.e. a page view), they may see numerous images, graphics, pictures etc. and generate multiple hits.
For example, if a web page contains 5 images, a "hit" on that page will generate 6 "Hits" on the web server, one page view for the web page, 5 hits for the images.
A visit happens when someone or something (robot) visits your site. It consists of one or more page views/ hits. One visitor can have many visits to your site.
A unique visitor is determined by the IP address or cookie. By default, a visit session is terminated when a user falls on inactive state for more than 30 minutes. If the visitor left the web site and came back 30 minutes later, Nihuo Web Log Analyzer will report 2 visits. If the visitor came back within 30 minutes, Nihuo Web Log Analyzer will still report 1 visit.