Apparently, it was removed in one of the latest updates, however you can access the Toggle device mode by pressing F12 and then pressing Ctrl + Shift + M.
If you don't like this method, you can use this javascript based example which will tell you the current window width:
var onresize = function() { var width = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth; console.log(width); }
Press F12, and then press Esc to see the console.
Based on this answer: stack overflow
Joefay Mar 13 '16 at 7:04 2016-03-13 07:04
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