Use the following hooks to adjust wpcargo’s barcode size.

• To adjust the height:

  
  function custom_wpcargo_barcode_url_height( )
  
  {
  
  return 80;
  
  }
  
  
  
  
  add_filter( 'wpcargo_barcode_url_height', 'custom_wpcargo_barcode_url_height', 999 );
  
  

• To adjust the width:

  
  function custom_wpcargo_barcode_url_width( )
  
  {
  
  return 2;
  
  }
  
  
  
  
  add_filter( 'wpcargo_barcode_url_width', 'custom_wpcargo_barcode_url_width', 999 );