A request to send a JIT component to a streaming client is received. A network capability rating of the network over which the JIT component is to be sent to the streaming client is determined, and a client capability rating of the streaming client is determined. A transmission language format in which to send the JIT component to the streaming client is determined based on at least the network capability rating and the client capability rating. The JIT component is obtained in the transmission language format and sent to the streaming client over the network. In some embodiments, a transmission language format is determined for each sub-component of the component based on the network capability rating, the streaming client rating, and a sub-component characteristic rating.