Sketchfab is a platform to publish, share, discover, buy and sell 3D, VR and AR content. It provides a viewer based on the WebGL and WebVR technologies that allows users to display 3D models on the web, to be viewed on any mobile browser, desktop browser or Virtual Reality headset. Its 3D viewer can be embedded on external websites, notably on Facebook. It currently has more than 3 million 3D models of which about 300,000 are free.