Most of the website includes lots of unimportant items. This unimportant items includes things like the header and the footer, as well as all kinds of navigational elements and advertisements. If you want to remove unimportant items from web page, purifyr is a free web service that removes irrelevent contents and make web page printable. This is a very good tool for prepare web contents for printing.
It is very helpful in good reading and it work in slow internet connection also.