This is a simple GPU-accelerated Mandelbrot set viewer using WebGL. It employs the continuous iteration count as described in Inigo Quilez's article. You can also export a render using the save button. Sadly you can not zoom in indefinitely: you will eventually run into the limits of 32-bit floating point precision and start to see artifacts. I've tried to emulate higher precision using some hacks, but it doesn't work on all devices. You can try it out by enabling the "High precision" checkbox in the settings.