Shrink software


Curious if anyone has come across software or a way to shrink a page or screen just the opposite of Control + 2 fingers up? I do a lot go genealogy work and often a cannot take a screen shot of a page because it is larger than my 15" MBP van handle. (OH how I miss my 17" MBP!)

I can squeeze in to reduce drastically (Launcher??), but not the opposite either.