When using analytics programmes on your website,which of these do not fall under the category of a dimension?

In analytics, a dimension is an attribute of your data, describing characteristics of users, sessions, or events. Examples include the device used (mobile, desktop), the browser (Chrome, Firefox), or the geographic location of the user. These are categorical or descriptive pieces of information. "The time a user spends on the site" is a metric, not a dimension. A metric is a quantitative measurement, such as the number of users, bounce rate, or session duration. Metrics are numerical values that can be counted or averaged. Therefore, while device and browser are descriptive attributes (dimensions), time spent is a measurable quantity (a metric).