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Download in JavaScript PDF Viewer control

13 Feb 20264 minutes to read

The PDF Viewer supports downloading the currently loaded PDF document. Use the enableDownload option to enable or disable download functionality. The examples below demonstrate standalone and server-backed configurations.

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Essential JS 2</title>
<!-- Essential JS 2 fabric theme -->
<link href="{{:CDN_LINK}}ej2-pdfviewer/styles/fabric.css" rel="stylesheet" type="text/css"/>
<!-- Essential JS 2 PDF Viewer's global script -->
<script src="{{:CDN_LINK}}dist/ej2.min.js" type="text/javascript"></script>
</head>
<body>
<!--element which is going to render-->
<div id='container'>
<div id='PdfViewer' style="height:500px;width:100%;">
</div>
</div>
</body>
</html>
var pdfviewer = new ej.pdfviewer.PdfViewer({
        enableDownload: true,
        documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf",
});

ej.pdfviewer.PdfViewer.Inject(ej.pdfviewer.Toolbar, ej.pdfviewer.Magnification, ej.pdfviewer.LinkAnnotation,ej.pdfviewer.ThumbnailView, ej.pdfviewer.BookmarkView, ej.pdfviewer.TextSelection, ej.pdfviewer.TextSearch, ej.pdfviewer.Navigation, ej.pdfviewer.Print);
pdfviewer.appendTo('#PdfViewer');
var pdfviewer = new ej.pdfviewer.PdfViewer({
        enableDownload: true,
        documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf",
        serviceUrl: 'https://document.syncfusion.com/web-services/pdf-viewer/api/pdfviewer'
});

ej.pdfviewer.PdfViewer.Inject(ej.pdfviewer.Toolbar, ej.pdfviewer.Magnification, ej.pdfviewer.LinkAnnotation,ej.pdfviewer.ThumbnailView, ej.pdfviewer.BookmarkView, ej.pdfviewer.TextSelection, ej.pdfviewer.TextSearch, ej.pdfviewer.Navigation, ej.pdfviewer.Print);
pdfviewer.appendTo('#PdfViewer');

Alt text

Invoke the download action programmatically with a simple button example:

<button id="download">Download</button>


var pdfviewer = new ej.pdfviewer.PdfViewer({
                    enableDownload: true,
                    documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf",
                });
ej.pdfviewer.PdfViewer.Inject(ej.pdfviewer.Toolbar, ej.pdfviewer.Magnification, ej.pdfviewer.LinkAnnotation,ej.pdfviewer.ThumbnailView, ej.pdfviewer.BookmarkView, ej.pdfviewer.TextSelection, ej.pdfviewer.TextSearch, ej.pdfviewer.Navigation, ej.pdfviewer.Print);
pdfviewer.appendTo('#PdfViewer');

document.getElementById('download').addEventListener('click', function () {
    pdfviewer.download()
});
var pdfviewer = new ej.pdfviewer.PdfViewer({
                    enableDownload: true,
                    documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf",
                    serviceUrl: 'https://document.syncfusion.com/web-services/pdf-viewer/api/pdfviewer'
                });
ej.pdfviewer.PdfViewer.Inject(ej.pdfviewer.Toolbar, ej.pdfviewer.Magnification, ej.pdfviewer.LinkAnnotation,ej.pdfviewer.ThumbnailView, ej.pdfviewer.BookmarkView, ej.pdfviewer.TextSelection, ej.pdfviewer.TextSearch, ej.pdfviewer.Navigation, ej.pdfviewer.Print);
pdfviewer.appendTo('#PdfViewer');

document.getElementById('download').addEventListener('click', function () {
    pdfviewer.download()
});

How to get the base64 string while downloading the PDF document

The downloadEnd event fires after a download completes and exposes the downloaded document as a base64 string.

The following code illustrates how to get the downloaded document as a base64 string.


<button id="download">Download</button>
<button id="load">Load</button>


var pdfstream;
document.getElementById('download').addEventListener('click', function () {
    //API to perform download action.
    viewer.download();
    viewer.downloadEnd = function (args) {
        pdfstream = args.downloadDocument;
        //Print the document as a base64 string in the console window.
        console.log(pdfstream);
    };
});

document.getElementById('load').addEventListener('click', function () {
    //Load the base64 string in the viewer.
    viewer.load(pdfstream, null);
});

View sample in GitHub.

See also