Disclosed are methods, apparatus, systems, and computer program products for customizing a data interface in an on-demand service environment. In some implementations, a computing device provides an application for customizing a data interface displayable on a plurality of display devices having different form factors, the application providing one or more configurable templates. The computing device receives a selection of a template and provides for display a configuration interface of the application displaying one or more components arranged according to the selected template. The computing device receives a request to display a preview of the data interface at a display dimension corresponding to a display device, the display device having a form factor. The computing device determines, based on the requested display dimension, a display configuration for the components of the data interface and provides for display in the configuration interface the components according to the determined display configuration.