Bookmark import/export is a feature in web browsers that allows users to transfer their saved website links, known as bookmarks or favorites, from one browser or device to another. This process makes it easy to switch browsers or set up a new device without losing access to important or frequently visited websites. Importing bookmarks brings saved links into a browser, while exporting creates a file containing existing bookmarks for backup or transfer. This function helps maintain continuity and organization in web browsing and enhances user convenience and productivity.