When we click "share" , there is a popup:

[![enter image description here][1]][1]

In the popup, I suggest we have a <kbd>Copy</kbd> button beside the textbox (and near to "share" so as to minimize mouse movement) to make it easier to copy links to the clipboard. 

(After all, that's what the user is most likely to do next after clicking "share").



  [1]: https://i.sstatic.net/NvmTh.png