What type of data is primarily handled by localStorage?

LocalStorage is designed to store data that persists across sessions, meaning that the information you save in localStorage will remain available even after the user closes the browser or navigates away from the website. This capability allows web applications to retain user preferences, form input data, or any other data that should remain consistent and accessible during subsequent visits.

This is in contrast to temporary session data, which is stored in sessionStorage and is lost once the session ends or the tab is closed. Configuration settings may or may not be persistent, but localStorage is not limited to just that type of data; it is used for a broader range of information. LocalStorage does not inherently manage data intended for partner services, as its primary objective is to facilitate client-side data storage for the application itself.