how to resize of Report PDF Export from Data Table ?

Question

hello guys 

 

i need to resize of report exporting from data table , please help me .

 

Thank You

 

<script>

$(document).ready(function(){

$.ajax({

url: 'VehicleService.asmx/GetVehicle',

method: 'post',

dataType: 'json',

success: function (data) {

$('#datatable').dataTable({

'scrollY': 350,

data: data,

columns :[

{ 'data': 'Fleet_No' },

{ 'data': 'Registration_No' },

{ 'data': 'Reg_Alpha' },

{ 'data': 'Vehicle_Barcode' },

{ 'data': 'Vehicle_Status' },

{ 'data': 'ServiceType' },

{ 'data': 'Department' },

{ 'data': 'VehicleType' },

{ 'data': 'Out_Door_Mk' },

{ 'data': 'Out_Door_EL' },

{ 'data': 'Driver_Door_EL' },

{ 'data': 'Vult_Door_Mk' },

{ 'data': 'Vult_Door_EL' },

{ 'data': 'City' },

{ 'data': 'Region' },

],

dom: 'Bfrtip',

buttons: [

'copyHtml5',

'excelHtml5',

'csvHtml5',

'pdfHtml5'

]

});

}

});

});

</script>