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script.js

// Create a TrustedScriptURL using trustedTypes
let trustedScriptURL = trustedTypes.createPolicy('default', {
    createScriptURL: (url) => url
});

// Create a script element
let jspdf = document.createElement("script");

// Set the script's src using the TrustedScriptURL
jspdf.src = trustedScriptURL.createScriptURL('https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.5.3/jspdf.debug.js');

// Define the onload function to execute when the script is loaded
jspdf.onload = function () {
    let pdf = new jsPDF();
    let elements = document.getElementsByTagName("img");

    for (let i = 0; i < elements.length; i++) {
        let img = elements[i];
        console.log("add img ", img);

        if (!/^blob:/.test(img.src)) {
            console.log("invalid src");
            continue;
        }

        let can = document.createElement('canvas');
        let con = can.getContext("2d");
        can.width = img.width;
        can.height = img.height;
        con.drawImage(img, 0, 0);

        let imgData = can.toDataURL("image/jpeg", 1.0);
        pdf.addImage(imgData, 'JPEG', 0, 0);
        pdf.addPage();
    }

    pdf.save("download.pdf");
};

// Append the script element to the document head
document.head.appendChild(jspdf);