A method for modifying a document at a client-side application is disclosed. The method involves receiving a user-requested document at a client-side application from a server; querying a database by the client-side application with entities in the user-requested document, where at least one entity is associated with entity information stored in the database; in response to querying the database, receiving the entity information associated with the at least one entity at the client-side application; modifying the user-requested document at the client-side application to obtain a modified document, where modifying the document comprises adding the entity information or a link to the entity information associated with the at least one entity; and displaying the modified document with the client-side application.