I have the solution if you are viewing a video or just a webpage and it’s too small to read. Sometimes you goto a video and it’s a very tiny box and you can’t see it and it doesn’t give you the option to increase to full screen?
If you’re using firefox/mozilla and not sure if it works with internet explorer, you can increase the size quite easily.
Once you are on the page you click somewhere on the page where there is nothing and hold down the control key and on your mouse use the scroll wheel and that will increase/decrease the size of the page.