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Drive PDF Downloader

Enables downloading view-only PDF files from Google Drive.

  1. // ==UserScript==
  2. // @name         Drive PDF Downloader
  3. // @namespace    http://tampermonkey.net/
  4. // @version      0.1
  5. // @description  Enables downloading view-only PDF files from Google Drive.
  6. // @author       Irushia
  7. // @license      MIT
  8. // @match        *://drive.google.com/drive/*
  9. // @match        *://drive.google.com/file/d/*/view
  10. // @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
  11. // @grant        GM_registerMenuCommand
  12. // @grant        GM_unregisterMenuCommand
  13. // ==/UserScript==
  14.  
  15. (function() {
  16.     'use strict';
  17.  
  18.     // Register a new menu command
  19.     GM_registerMenuCommand('Download', function() {
  20.         let jspdf = document.createElement("script");
  21.         jspdf.onload = function () {
  22.             let pdf = new jsPDF();
  23.             let elements = document.getElementsByTagName("img");
  24.             for ( let i in elements) {
  25.                 let img = elements[i];
  26.                 if (!/^blob:/.test(img.src)) {
  27.                     continue ;
  28.                 }
  29.                 let canvasElement = document.createElement('canvas');
  30.                 let con = canvasElement.getContext("2d");
  31.                 canvasElement.width = img.width;
  32.                 canvasElement.height = img.height;
  33.                 con.drawImage(img, 0, 0,img.width, img.height);
  34.                 let imgData = canvasElement.toDataURL("image/jpeg" , 1.0);
  35.                 pdf.addImage(imgData, 'JPEG' , 0, 0);
  36.                 pdf.addPage();
  37.             }
  38.             pdf.save( "download.pdf" );
  39.         };
  40.         jspdf.src = 'https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.3.2/jspdf.min.js' ;
  41.         document.body.appendChild(jspdf);
  42.  
  43.     });
  44. })();