Click depth refers to the number of clicks or page views needed for a user to reach a particular page on a website. A website is ideally structured to minimize the click depth and keep key content within easy reach.
For example, a website's home page would have a click depth of 0, while an interior page accessible directly from the main navigation menu would have a click depth of 1.
Pages requiring multiple levels of navigation, links, drop-downs, and so on to access, can accumulate a click depth of 3-5+. Higher numbers indicate pages more difficult for visitors to discover and access.
An effective website minimizes excessive click depths that frustrate users, reduce pageviews, or hide pages back in the site architecture.
Keeping click depth low and navigation intuitive allows websites to increase engagement and conversion rates.