pdf.landscape Boolean (default: true)

If set to true, reverses the paper dimensions if that width is needed as the larger edge.

Example - setting the portrait mode

<div id="spreadsheet"></div>
<script>
    $("#spreadsheet").kendoSpreadsheet({
        sheets: [{
            rows: [{
                cells: [{ value: "A" }, { value: "B" }, { value: "C" }]
            }, {
                cells: [{ value: "1" }, { value: "2" }, { value: "3" }]
            }, {
                cells: [{ value: "4" }, { value: "5" }, { value: "6" }]
            }]
        }],
        pdf: {
            landscape: false
        }
    });

    var spreadsheet = $("#spreadsheet").data("kendoSpreadsheet");
    spreadsheet.saveAsPDF();
</script>