This document describes a content caching system for pre-loading digital components, the system including a communication interface configured to communicate with a remote device over a wireless network, a local content cache; and an evaluation system comprising one or more processors. The one or more operations include pre-loading a digital component for rendering in a browser at a time that is subsequent to a time of the pre-loading, registering a scheme of a network reference for the cached digital component, with the scheme comprising a specified portion of the network reference for the cached digital component; retrieving, from the local content cache, the pre-loaded digital component associated with the digital component tag comprising the network reference; and rendering, from the local content cache, the pre-loaded digital component in a graphical user interface rather than requesting the digital component from the remote device.