Dynamic utilization of condensing metadata is enabled by condensing information being communicated to/from a mobile device. The communication exchange occurs between a mobile device and an internet service, and it involves a mobile internet service proxy. The information is condensed responsive to condensing metadata and uncondensed using the condensing metadata. In an example embodiment, condensing metadata comprises encoding metadata for tags and compression metadata for other data. In a first described implementation, a mobile internet service proxy effectuates a static installation of condensing metadata to the mobile device from the internet service. In a second described implementation, the internet service lacks condensing metadata. The mobile internet service proxy therefore retrieves the schema defining the relevant information and dynamically generates condensing metadata. This dynamically-generated condensing metadata is copied to the mobile device so that condensed data may be communicated at least between the mobile device and the mobile internet service proxy.