A computer system and media for generating previews for protected electronic documents are provided. The computer system provides servers that receive rules corresponding to the protected electronic documents from owners of the protected electronic documents. The rules specify quantity and quality of each interaction, by client devices, with each protected electronic document. Additionally, the servers receive queries having query terms from the client devices. In response, the servers generate previews for the protected electronic documents that match the query. The previews are generated and transmitted to the client devices based on the rules stored by the servers.