Resize icons Android it is possible without having to be root nor use a rom that allows this type of customization. This is possible thanks to the application giganticon.
giganticon
Really what this application does is create a widget which we can resize. The widget will be assigned the application that we want that will be the icon that we visualize. The first thing we must do is install the application from Google Play.
If we access the application, we will only get a message indicating that we must go to the list of widgets and search giganticon.
So, let's go to the list of widgets our launcher and we look for the icon giganticon. We select it and add it to the desktop where we want to have the icon.
Next, it will appear to us to choose the icon / application that we want to appear.
Finally our icon will appear on the desktop. Now we can resize it to fit the size we want.
Source: ABC