To begin with, WebGL stands for Web Graphics Library being a JavaScript API (Application Programming Interface) that allows you to render 3D and 2D graphics within compatible internet browsers without needing plugins. It uses the HTML5 Canvas element which makes it possible to generate graphics in a dynamic way directly from script code.
WebGL can be applied to all sorts of content: music videos, art, 3D design environments, space modeling, objects modeling, data visualization, mathematical functions, simulations etc. If you have a slower graphics processor or an old version of the browser, the designs might freeze or work slowly. You can try updating your browser first. If that does not work, there is not much left to do in the case of hardware limitations except for upgrading your GPU.
All technology talk aside, WebGL designs are superior to usual designs in terms of interactivity and graphics, and to be honest they are much more interesting. Enough said, let me show you what WebGL is all about. Check out the following 25 webgl website designs that will blow your mind.