How to Print PDFs Directly from JavaScript in HTML-Based Workflows?

Printing PDFs Directly from JavaScript

In HTML-based workflows, integrating direct print functionality for PDFs can be a valuable addition for users. To achieve this, several approaches can be explored.

One technique involves embedding the PDF within the document using the tag:

<embed
    type="application/pdf"
    src="path_to_pdf_document.pdf"
    id="pdfDocument"
    width="100%"
    height="100%"
/>

Once embedded, JavaScript can be used to trigger printing:

function printDocument(documentId) {
    var doc = document.getElementById(documentId);

    //Wait until PDF is ready to print    
    if (typeof doc.print === 'undefined') {    
        setTimeout(function(){printDocument(documentId);}, 1000);
    } else {
        doc.print();
    }
}

This method allows for seamless printing without displaying the PDF to the user. Embedded PDFs can be placed within hidden iframes for a more user-friendly experience. However, it's worth noting that this approach may not be compatible with all modern browsers.

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