Internet Explorer 11 Developer Tools missing resize option
internet-explorer, internet-explorer-11
Solution
Unfortunately Microsoft removed this feature in the IE11 developer tools. The resolution option provided is, as you point out, not a 100% acceptable substitute since it does not alter the browser window's dimensions.
I haven't yet found a plugin to do the resizing, but seems like ie11 should get one that is like Firefox's Resizer plugin.
In the meantime you could do the resizing via javascript and then hit the content you want to test in the smaller screen size. For example, this website will resize your window for you, just click on your desired resolution: http://resizemybrowser.com/
Problem
Where in the Internet Explorer 11 Developer Tools is the "resize" option?, In IE 10 it was under the Tools menu ... Resize - Provides a submenu with a list of predefined screen sizes, and a custom size option. From MSDN ...