Opening a PDF

When I open a PDF it's in a smaller window than the PDF, it's off center, and there's a submenu at the top. It's incredibly distracting - is there a way to set the preferences somewhere to just open it up like it was a page of paper or an actual handout or ... a flyer? 

You can resize the window after opening it (drag the bottom-right corner of the window). There's no other way that I know of, for example there's no way to pre-set or save the Size of that window, and there is no "Default to show Full Page" setting. It's just how the PDF-viewer within the Roll20 tabletop is sized at-opening. I don't know why but my guess is it is sized to "fit" on smaller resolution windows of Players.

If you click on the 3 lines at the top-left (i think) when viewing the pdf it removes the stuff on the left and it looks like this, not perfect, but, a great improvement