In the Web Console settings, you can also select the "Take a screenshot of the entire page" option under "Available Toolbox buttons",

Exactly what I did/described/took a screencap of for you. I'm not getting the button, though (or If I am I don't know where it is or what it looks like). Where is it/what is it? (It's not in the icons found under Customize, not in my browser chrome, not in my status bar. The only screen capture utility I'm coming up with is the one I mentioned in the address bar, but that's a pain to access compared to just having a button somewhere to hit).