1. A method, comprising: at an electronic device with a touch-sensitive surface and a display, wherein the device includes one or more sensors to detect intensity of contacts with the touch-sensitive surface: displaying a plurality of document icons, including a respective document icon corresponding to a respective electronic document associated with a respective application; while a focus selector is over the respective document icon, detecting a gesture that includes a contact on the touch-sensitive surface; and in response to detecting the gesture: in accordance with a determination that the contact had a maximum intensity during the gesture that was below a respective intensity threshold, displaying the electronic document in a new application window of the respective application; and in accordance with a determination that the contact reached an intensity during the gesture that was above the respective intensity threshold, displaying a preview of the respective electronic document without displaying a new application window of the respective application.