A small script for downloading pdfs from sites with PDF Embedder

pdf_unembedder.js

function saveToFile(byteArray, fileName) {
    const blob = new Blob([byteArray], { type: "application/pdf" });

    const url = URL.createObjectURL(blob);
    
    // Note: A link element is used to set the file name
    const a = document.createElement("a");
    a.href = url;
    a.download = fileName;
    document.body.appendChild(a);

    a.click();
    document.body.removeChild(a);
    URL.revokeObjectURL(url);
}

// TODO: handle multiple pdf viewers
const pdfUrl = jQuery(document.querySelector(".pdfemb-viewer")).data("pdf-url");

PDFEMB_NS.pdfembGetPDF(pdfUrl, function (t, e) {
    console.log("Gotcha!");

    // Note: A search query is used to name the pdf file, which may not work properly on some sites
    saveToFile(t, window.location.search.substring(1) + ".pdf")
});