Predictive query suggestion caching

Methods, systems, an apparatus, and computer program products, for pre-caching query suggestions. In one aspect, a method includes receiving from a client device a request for a search resource; providing to the client device in response to the request the search resource, the search resource including: first instructions that cause the client device to generate a search interface that includes a first query input field; initial query suggestions; second instructions that cause the client device to: store the initial query suggestions in a suggestion store on the client device; compare query characters input in the first query input field to the query suggestions stored in the suggestion store; select query suggestions that match the query characters input in the first query input field based on the comparison; and display the selected query suggestions as query suggestions for the query characters input into the first query input field.