<ul data-eligibleForWebStory="false">The main difference between localStorage and sessionStorage lies in how long the data is stored and where it's accessible.localStorage persists even after the browser/tab is closed, while sessionStorage's data is cleared when the tab is closed.localStorage is shared across all tabs/windows from the same origin, whereas sessionStorage is specific to the individual tab or window.Both have around a 5MB storage capacity and store only strings, requiring JSON serialization for objects.