What are the ways to prevent users to take screenshot of a webpage? [duplicate]

Answer 1

Nelson's right. There's a lot you can do to make it harder (javascript to capture the prtsc key press and return false, flicker different quadrants of the screen at intervals so that it's too fast for human eyes to really tell but so that the whole screen never shows at once, etc) but fundamentally anyone who's even vaguely tech-savy can bypass this in about 5 seconds. Also, a google search should have answered this for you in way less time than it took to ask.

Answer 2

Screenshots are not controlled by the web browser, they are controlled by software running on the user's operating system and cannot be remotely controlled by a web server.

Answer 3

You cannot block the print screen button or the snipping tool in Windows 7 or the Grab application included with Mac OS or...

Answer 4

It is possible. Try this css3 feature.

@media print {
    html, body {
       display: none;  /* hide whole page */
    }
}