For some reason the text ends up much smaller and is not really legible unless magnified. I have used that option a few times since and it work well each time, but I pasted the copy into TextEdit which works perfectly, but then trying to create a pdf from that TextEdit becomes a problem.
What I had not noticed initially that there is then also an option at the top right that comes up where one can just select the complete webpage instead of scrolling down.
By far the best option I found so far to save a web page in a format other than html is using the Firefox 'Take a Screenshot' right-click.