Techniques are disclosed relating to generating custom previews for search results provided by a search service. For example, in various embodiments, a server system that provides a search service may receive a custom preview definition from a user associated with a first group of users. The custom preview definition may specify code that is usable to generate a custom preview interface for search results of a particular record type. The server system may use the custom preview definition to generate a custom preview interface for search results provided to users of the first group. For example, the server system may receive user input identifying a first search result provided by the search service. The server system may then determine that the record type of the first search result matches the particular record type and retrieve the specified code to facilitate display of the custom preview interface at the client device.