Google Drive PDF'er

gdrive-pdf.js

(function() {
  let jspdf = document.createElement("script");
  
  jspdf.onload = function () {
  
      let pdf = new jsPDF();
      let elements = document.getElementsByTagName("img");
      for (let i in elements) {
          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, img.width, img.height);
          let imgData = can.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/1.5.3/jspdf.debug.js';
  document.body.appendChild(jspdf);

})()