Open PDFjs as base64 string

invoke_pdfjs_viewer_with_base64.js

// https://github.com/heejune/WinForm-PDFjs/blob/master/WinFormPDFViewer/pdfjs-1.4.20-dist/web/viewer.js

// PDFViewerApplication.open wrapper for base64 param
window.openPdfAsBase64 = function (base64) {
    var binary_string = window.atob(base64);
    var len = binary_string.length;
    var bytes = new Uint8Array(len);
    for (var i = 0; i < len; i++) {
        bytes[i] = binary_string.charCodeAt(i);
    }

    PDFViewerApplication.open(bytes)
};