toolbar.contextMenu Boolean (default: false)

When this option is set to true, the toolbar will render a dropdown button as its first item. The dropdown will contain the open, download and print tools instead of them being rendered on the right-side of the toolbar.

<div id="pdf-viewer"></div>
<script type="module">
    $("#pdf-viewer").kendoPDFViewer({
        toolbar: {
            contextMenu: true
        }
    });
</script>