The URL Structure Type is a setting that allows you to control how the URLs for your filtered content are displayed. You can choose between two options: Plain and Permalink.
URL aliases are custom, human-readable names for URLs. They are used to make URLs more memorable and easier to type. Crocoblock’s JetSmartFilters plugin allows you to create URL aliases for your filters. This can make your filters more user-friendly and can also improve your website’s SEO.