Free online mirror to see yourself on computer screen or phone. great for trying on makeup, because it works on a computer, which has a front-facing camera. The online mirror is a website that allows you to see yourself. It's just like a regular mirror but online. Thus explaining the name. It also lets you test your webcam. This Fullscreen Mirror is an online webcam mirror. This means you just need to turn on your webcam and you can use your display as mirror.