Embodiments of the present invention address deficiencies of the art in respect to extensible markup language (XML) data processing and provide a novel and non-obvious method, system and computer program product for inter-device transfer of parsed XML documents. In one embodiment of the invention, a markup serialization method can be provided. The method can include receiving a request in a second computing process for offloaded parsing of markup from an application in a first computing process, retrieving markup from the application, parsing the markup in the second computing process to produce a serialized data object for the markup, placing the serialized data object into shared memory for the application, and returning a reference to the serialized data to the application.