This disclosure details the implementation of a user interface for a portable, image-processing transmitter. The Transmitter's user interface comprises a compact and efficient forum for managing, manipulating, storing, and transmitting digital images of various formats across a wide array of transmission means and protocols. Embodiments of the Transmitter may be employed by photographers, photojournalists, and/or the like to rapidly process, edit, and send high-quality photographs or video to multiple news agencies, newspapers, magazines, television studios, websites, and/or the like while maintaining control over their photographs by allowing them to send reduced quality and watermarked proofs. The Transmitter may be configured via the user interface to allow users seeking to transmit large, high-resolution images to first generate and transmit low-resolution preview images, thereby saving on transmission time and resources. Full resolution versions of the images may then be transmitted as approvals of the preview versions are received.