[Theme Horse Support Team]

Hi hardcorerito20,
Go to dashboard -> apperance -> editor
At the right side there is Theme Functions (functions.php) file. In this file there is
add_image_size( 'icon', 100, 100, true );

How much width and height you want? You can change it from here. We recommended you not to change the code. You need to do this for each and every time when you update the theme.

Thank you!