I am currently doing a project, in which I need to stop the user from taking the snapshot of any Web Page, for which he can use the "Print Scrn" / "Printscreen" key available in any of the normal keyboards.
I have been trying to find its solution, but in vain. If possible, I need to take into account of the "Screengrab" add-on of the Firefox browser, by stopping it also.
Any help is greatly appreciated, and I am using PHP (as server-side language) & jQuery for my project.
Try this
$(document).keyup(function(e){
if(e.keyCode == 44) return false;
});
Hope it works
Thankfully, this outrageous idea is not possible to implement reliably, neither the "disable screen grab" part nor the "disable user's Firefox extensions" one. And even if it were, as @kbok points out in his comment above, you don't have a right to do this.
The only way to protect your content online is copyright laws - mentioning those is often enough to scare people away from misusing it! - or not showing it at all.
Like @Sjoerd said, this is not possible.
If it is pictures you want to protect, I suggest you for example display lower quality images that are watermarked instead and only display the non watermarked high quality ones when appropriate.
But yeah... If you want them to be impossible to copy... don't put them online.
Why do you want to prevent the print screen?
If it's some photos you want to protect, you might want to put it in low resolution, and include some kind of copyright logo programmatically in php.
I think that's pretty much it.
if it works, it only will work if the user has js enabled. there are also several tools to make screen shots - its not possible to stop user from using this method to grab elements.
What if they take a photo of their monitor!?
You'll have to code something to make their camera self-destruct.
You can't disable screen grabbing from the Web browser, it would only be possible by installing additional software on the user's PC.
There are some IRM (Information Rights Management) tools available that do that e.g. by protecting Windows/DirectX API calls and also monitoring video memory such as Oracle IRM or such as Microsoft's IRM technology.
Especially the latter might be of interest as there is also a Rights Management Add-on for Internet Explorer.
But as other already said, any IRM/DRM technology is controversy and you should understand that it most often will limit or annoy your users.
The last time such idiotic websites happened my way, and I needed to print something (and surprise! The print button was disabled too!), I ran the damned site in a virtual machine, and took a copy from that.
As a result, I was able to discuss results with a group of people who needed to look at the printout rather than having the group huddle around my computer which, thanks to the website in question, would process each click oh so very slowly. Printing it saved hours of my time.
(And before you ask... Yes, that was perfectly legal).
You can change the contents of the clipboard using JavaScript or Flash. This already helps a bit.