title: What is appropriate size of icon for 3D Touch shortcut item on home screen?
body: <p>I couldn't find it on <a href="https://developer.apple.com/library/prerelease/ios/documentation/UserExperience/Conceptual/MobileHIG/IconMatrix.html#//apple_ref/doc/uid/TP40006556-CH27-SW1" rel="noreferrer">Icon and Image Sizes</a>.</p>
  
  <p>But I mean, what is the size of following icons?</p>
  
  <p><a href="https://i.stack.imgur.com/pPZZSl.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/pPZZSl.jpg" alt="enter image description here"></a></p>