Chromecast is a line of digital media players developed by Google. Chromecast devices are small dongles that plug into a TV's HDMI port and use a Wi-Fi connection to stream audio and video from a compatible device, such as a smartphone or laptop, to the TV. Chromecast devices support a variety of audio and video formats, including popular streaming services such as Netflix, YouTube and Teyuto, and can be controlled using the Chromecast mobile app or by using the "Cast" button in compatible apps. Chromecast also allows users to share their screen or audio from their device on the TV, and can be used for a variety of purposes, including streaming music, watching videos, and playing games.