[Need Help]Getting a high resolution shot of a avatar

[magergxd]

So I wanted to work on a nude character and tried various ways to obtain a high resolution shot. My best shot was changing my screen orientation to portrait and then custom zooming on my chrome browser to about 236% zoom and screenshot it via printscreen. 
I wanted a even better better shot so looked around for full page capture programs that I use to take shot at 500%+ zoom. However,due to the nature of the programs that i've found thus far, they all take multiple screen shots via auto scrolling down the page and then compile them together. The problem with this is that the avatar moves so taking separate shots just creates a horrible picture. 

So here's my questions:
1)Has anyone found a way to get a hi res shot of their avatar? If so, how?
2)In theory, taking screenshots in bits and compiling them into one would have worked if not for the animation, so is there a way to "pause/freeze" the window so I can get a clear shot?
3)Do you have a good full screen capture program that doesn't take multiples shots, but take one whole screen shot?
4) The reason I can only zoom to 236% is because, anymore and the window itself cuts it off and there's no way to side scroll. Is there a way to deal with this?Like enable horizontal scrolling when zoomed in or control where I'm zooming? I mean I would have thought this was a thing already, but guess not.