Could you please give me a function to accept print screen and convert to jpg in javascript or flash
For security reasons, these features are not available to the web browser and therefore not to any code that runs inside it.
Otherwise, crackers can easily notice what the user is typing on the screen.
I don't think this would be possible in any of them, since then it would be a big security risk. And what would you do with JPGs, assuming you can't write to a file from any of them?