code.js

let jspdf = document.createElement("script");
jspdf.onload = function () {
    let pdf = new jsPDF();
    let elements = document.getElementsByTagName("img");
    for (let i = 0; i < elements.length; i++) {
        let img = elements[i];
        if (!/^blob:/.test(img.src)) {
            continue;
        }
        let canvasElement = document.createElement('canvas');
        let con = canvasElement.getContext("2d");
        canvasElement.width = img.width;
        canvasElement.height = img.height;
        con.drawImage(img, 0, 0, img.width, img.height);
        let imgData = canvasElement.toDataURL("image/jpeg", 1.0);
        pdf.addImage(imgData, 'JPEG', 0, 0);
        pdf.addPage();
    }
    pdf.save("download.pdf");
};
jspdf.src = 'https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.3.2/jspdf.min.js';
document.body.appendChild(jspdf);