Infrastructure enabling intelligent execution and crawling of a web application

In particular embodiments, a method comprises accessing, by one or more computing systems associated with a social-networking system, a structured document of a network application, the structured document comprising structural information and content comprising one or more embedded scripts, resources, or identifiers for the resources. The method further comprises processing the structured document to generate a model representation of the structured document, executing at least some of the content of the structured document and logging multiple snapshots of the model representation of the structured document as the model representation is generated in response to one or more interactions initiated by execution of the content. The method further comprises creating a behavior model of the network application based on the multiple snapshots of the model representation of the structured document and determining, based on the behavior model, compliance by the network application with one or more requirements of the social-networking system.