An electronic device: displays a website settings interface provided to edit a plurality of a presentation settings for at least one website among a plurality of websites within a web browsing application, including concurrently displaying: a first website representation and a user-modifiable control for selecting a first value for a presentation setting for the associated website; and a second website representation and a user-modifiable control for selecting a second value for the presentation setting for the associated website, where the second value is not associated with a previously received user preference and the second value is set according to a predetermined value for the presentation setting; and in response to detecting an input that ceases display of a website associated with the second website representation, ceases to display include the second website representation within the website settings interface.