Make small icon on Dash

What about big icon on the shell dash? It size also can be modified to
match with your application icon. To modified icon size on the dash, we
need to modified dash.js file which write in Java. So, follow this step,

1. Open terminal and run this command, sudo gedit /usr/share/gnome-shell/theme/js/ui/dash.js

2. Search for 'iconSizes' as you see on the screenshot. In
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