Techniques for customizing search may include the following operations: outputting, to a computing device of a user, a Web page that enables selection of signals that are usable to generate search results; during a search session, receiving, through the Web page, a query and a selection corresponding to one or more of the signals, where the selection differs from a default set of search signals used by the search system for searching; obtaining, for output to the computing device, search results that are based on the query and the selection; and following the search session, configuring the search system to use the default set of search signals for searching.