a prompt for access would not be a problem in our case. Chrome has this (not sure about FF/IE) for extensions. Just add the 'tabs'/'desktopCapture' permission

a prompt for access would not be a problem in our case. Chrome has this (not sure about FF/IE) for extensions. Just add the 'tabs'/'desktopCapture' permission and call the appropriate API[0][1]. [0] - https://developer.chrome.com/extensions/tabs#method-captureVisibleTab https://developer.chrome.com/extensions/tabs#method-captureV... [1] - https://developer.chrome.com/extensions/desktopCapture https://developer.chrome.com/extensions/desktopCapture