how to take a screenshot off the internet
1 Press Prt Sc once to take a picture of your current screen. 2  If you hold the Alt key while doing this it will take a picture of just the window you are using, such as your internet browser. 3  So if you want a shot of only your internet browser, click into that window and press Alt & Prt Sc keys together. The button is usually in the upper-righthand corner of your keyboard, above Backspace.. 2  Press Prt Sc once to take a picture of your current screen. 3  If you hold the Alt key while doing this it will take a picture of just the window you are using, such as your internet browser.