I had an AG teacher in high school that would put this on the bored every time somebody would say assume . <| sep |> Would LOVE to do that ! Unfortunately not a way to support pinch to zoom on desktop yet that I ' m aware of . I believe there was is ? a hack on Chrome nightly where pinch to zoom will send controlscroll wheel . Hopefully WebKit will bring the new touch web APIs from mobile to desktop soon ! If anyone has pointers on browsers or approaches on desktop that support pinch to zoom please let me know . All that said , pinch to zoom currently works great in Eyrie on mobile browsers and tablets . We find Eyrie pretty useful on iPad on our lab bench when assembling prototypes especially when using group similar elements in Eyrie ' s outliner .