Chromecast is a thumb-sized media streaming device that plugs into the hdmi port on your tv. simply use an android phone, tablet, iphone, ipad, mac or windows laptop, or chromebook to cast your favorite entertainment and apps right to the big screen. chromecast pure and simple, is an inexpensive media streaming adapter that turns any hdmi-equipped television into an app-driven smart tv when paired with a phone, tablet or computer. chromecast works with a growing number of apps, including youtube, hulu, spotify, hbo now, cbs, pandora, etc. chromecast is the easy way to enjoy online video and anything from the web on your tv. plug it into any hdtv and control it with your existing smartphone, tablet, or laptop. send your favorites from hbo, youtube, hulu, pandora, watch espn, google play movies & tv, google play music.