A bookmarklet to get a markdown style URL string you are seeing, whose title is the page title or a string you select. The result is copied to clipboard.

CopyURL.js

javascript:caption=window.getSelection()+'';if(caption==""){caption=document.title;}i=document.createElement('input');i.setAttribute('id','copyinput');document.body.appendChild(i);i.value='%5B'+caption+'%5D('+location.href+')';i.select();document.execCommand('copy');document.body.removeChild(i);void(0);

// execute the bookmarklet without selection: [page's title](page URL)
// execute it with selection: [selected string](page URL)