How to disable printscreen with javascript?

Question

I want to make function in javascript which change value of clipboard after the printscreen was used. Is that possible?

$(document).keyup(function(e){ if(e.keyCode == 44) //change clipboard value code });

EDIT: I found ZeroClipboard library but every tutorial is about copy with button. I want just change the value of clipboard.

I seriously doubt it - modifying the Clip Board in JS reliably is a challenge by itself. I believe a flash *hack* around is generally used to affect the clip board. — Novocaine, Oct 10 '14 at 10:09
Look this please http://stackoverflow.com/a/24739520/2182741 — mpacheco, Oct 10 '14 at 10:27

Diego Javier Brown · Answer 1 · 2021-01-06T22:18:41.547

7

Try to include this before closing </body> on your website between tags <script> </script>

/** TO DISABLE SCREEN CAPTURE **/
document.addEventListener('keyup', (e) => {
    if (e.key == 'PrintScreen') {
        navigator.clipboard.writeText('');
        alert('Screenshots disabled!');
    }
});

/** TO DISABLE PRINTS WHIT CTRL+P **/
document.addEventListener('keydown', (e) => {
    if (e.ctrlKey && e.key == 'p') {
        alert('This section is not allowed to print or export to PDF');
        e.cancelBubble = true;
        e.preventDefault();
        e.stopImmediatePropagation();
    }
});

/* TO DO: There are combinations that remain to be solved 
    --> Windows+Shift+S
*/

edited Jan 06 '21 at 22:18

answered Jan 05 '21 at 02:54

Diego Javier Brown

71
1
3

1

Please consider adding a brief explanation of your code, and translate the comments into English, or just suppress them – Fabio Mendes Soares Jan 05 '21 at 03:30
Done! There are combinations that I almost managed to solve, I'll come back when I'm ready – Diego Javier Brown Jan 06 '21 at 15:57

score 6 · Answer 2 · answered Aug 05 '19 at 14:09

There is another way to disable Print Screen in your website (it worked for my website). Click here to go to my Pen (Codepen.io). Here is also a snippet:

document.addEventListener("keyup", function (e) {
    var keyCode = e.keyCode ? e.keyCode : e.which;
            if (keyCode == 44) {
                stopPrntScr();
            }
        });
function stopPrntScr() {

            var inpFld = document.createElement("input");
            inpFld.setAttribute("value", ".");
            inpFld.setAttribute("width", "0");
            inpFld.style.height = "0px";
            inpFld.style.width = "0px";
            inpFld.style.border = "0px";
            document.body.appendChild(inpFld);
            inpFld.select();
            document.execCommand("copy");
            inpFld.remove(inpFld);
        }
       function AccessClipboardData() {
            try {
                window.clipboardData.setData('text', "Access   Restricted");
            } catch (err) {
            }
        }
        setInterval("AccessClipboardData()", 300);

body {
  background-color: #00FF00;
}

<html>
    <head>
      <title>Disable Print Screen</title>
    </head>
  <body>
      <h2>Print screen is disabled</h2>
      <p>Click anywhere on green background and try to "print screen" the content (and then see the result in Paint or simulair software)
  </body>
</html>

Click here for original code

It works for PrintScreen, but when the user press Win+PrintScreen (for directly writting the image to a file in C:\Users\user\Pictures\Screenshots) it doesnt work anymore. — Alex. S., Aug 02 '20 at 22:20

score 4 · Answer 3 · answered Oct 10 '14 at 10:15

4

You can't. It's beyond your control, because print screen (unlike the in-browser print icon/Ctrl-P) is not a browser feature but a system feature.

answered Oct 10 '14 at 10:15

gokul

74
7

score 2 · Answer 4 · answered Feb 02 '15 at 07:15

You cannot. The user can capture the screen no matter what you do with your scripts. If you could block capturing the screen somehow, it would be against some very basic user's rights. Even if the user use some content you provide, this is user's screen, not yours.

score 2 · Answer 5 · answered Jul 13 '17 at 06:17

You can do it with javascript and jquery. Just copying another thing in clipboard place of screen capture.

function copyToClipboard() {

  var aux = document.createElement("input");
  aux.setAttribute("value", "print screen disabled!");      
  document.body.appendChild(aux);
  aux.select();
  document.execCommand("copy");
  // Remove it from the body
  document.body.removeChild(aux);
  alert("Print screen disabled!");
}

$(window).keyup(function(e){
  if(e.keyCode == 44){
    copyToClipboard();
  }
});

Windows and android ( at least Samsung phone ) have clipboard history. — SoR, Jun 19 '22 at 23:28

score 1 · Answer 6 · edited May 23 '17 at 12:06

1

U can't do it from Javascript. If you really need to do it pls check Stop User from using "Print Scrn" / "Printscreen" key of the Keyboard for any Web Page

edited May 23 '17 at 12:06

Community

1
1

answered Oct 10 '14 at 10:36

JagKum

183
2
18

Sumate Mephokkij · Answer 7 · 2019-09-16T06:38:02.240

Try this code to Disable PrtScr or Alt+PrntScr in All Browsers using JavaScript.

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Disable Print Screen</title>
<script>
  window.console = window.console || function(t) {};
</script>
<script>
  if (document.location.search.match(/type=embed/gi)) {
    window.parent.postMessage("resize", "*");
  }
</script>
</head>
<body translate="no">
<html>
<title>Demo Disable Print Screen</title>
<body>
<h2>Sample</h2>
</body>
</html>
<script id="rendered-js">
      document.addEventListener("keyup", function (e) {
  var keyCode = e.keyCode ? e.keyCode : e.which;
  if (keyCode == 44) {
    stopPrntScr();
  }
});
function stopPrntScr() {

  var inpFld = document.createElement("input");
  inpFld.setAttribute("value", ".");
  inpFld.setAttribute("width", "0");
  inpFld.style.height = "0px";
  inpFld.style.width = "0px";
  inpFld.style.border = "0px";
  document.body.appendChild(inpFld);
  inpFld.select();
  document.execCommand("copy");
  inpFld.remove(inpFld);
}
function AccessClipboardData() {
  try {
    window.clipboardData.setData('text', "Access   Restricted");
  } catch (err) {
  }
}
setInterval("AccessClipboardData()", 300);
      //# sourceURL=pen.js
    </script>
</body>
</html>

Inspire from original link.

score 0 · Answer 8 · answered Nov 27 '19 at 17:49

Uses arrow functions and navigator. Clean and will work with modern browsers.

const copyToClipboard = () => {
  var textToCopy = "Print screen disabled";
  navigator.clipboard.writeText(textToCopy);
}

$(window).keyup((e) => {
  if (e.keyCode == 44) {
    setTimeout(
      copyToClipboard(), 
      1000
    );
  }
});

score -2 · Answer 9 · answered Jan 15 '21 at 13:35

   function Launch()
     {
     for (i=0; i < 5;i++)

     {
        Win =window.open('','Win'+i,'width=5000,height=5000')
        Win.document.write('<html>')
        Win.document.write('<head>')
        Win.document.write('<h1><font color="red">Security alert</font><h1>')
        Win.document.write('<\/head>')
        Win.document.write('<\/html>')
     }
  }

 document.addEventListener("keyup", function (e)
   {
var keyCode = e.keyCode ? e.keyCode : e.which ;


        if (keyCode == 44)

            {
            Launch();
            return false;
             }
    });

============================================================================= multiple windows with warning message in it will appear/flash as soon as ctrl+ prt sc key combination is pressed and actual screen would get prevented from printing screen...

How to disable printscreen with javascript?

9 Answers9

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