According to some aspects of the disclosure, when a computing device sends a request for content, such as an Internet page, the computing device can include with the request one or more device context parameters, such as the computing device's power preferences (e.g., current battery level), wireless settings, network connection, etc. The content provider may then use this device context information to select the most appropriate version of the requested content. One example of device context information may be a low-power power save mode setting, or other mode setting.