How to download view only protected PDF from Google Drive (JS code)

[damond.michael 3]

Note: It was tested on Opera Browser.

Note 2: It converts pages to jpg images. The Coding Cat thinks it could be done preserving text, but he didn’t have more time for this and jpg solution was sufficient.

Step by step:

1. 
    
   
2. Open the document in Google Docs
    
   
3. Scroll to the bottom of the document, so all the pages are present
    
   
4. Open Developer Tools on separate window and choose the Console tab
    
   
5. Paste the code below (and hit enter)
   
6. All file should be loaded
   
7. to open console use ctrl+shify+i
   

 

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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);

 

 

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);

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