Filtering non-invasive data collection is presented. A server segments a web page into regions and sends the segmented web page along with a data collector program to a client. The client loads the web page whereupon the data collector program detects a user event corresponding to one of the regions. The data collector program uses one or more collection threshold settings to filter user event data corresponding to the user event. The server receives collected user event data and sends an acknowledgement message to the client whereby indicating that the server received the user event data intact. The server may also adjust one or more collection threshold settings and include the adjusted collection threshold settings in the acknowledgement message.