A pageview is a request to load (or reload) a single page of a website. This metric represents any change in URL within the domain, unique or not, within a visit.
A visit ends after 30 minutes of inactivity on a page.
For example, if a user refreshes a page within the same visit, it will be counted as another pageview.
On Similarweb, we present the average number of pageviews across all pages within a site over the analyzed period of time.
You can find this metric within Website Analysis > Traffic and Engagement.