You can convert a webpage into a PDF file uing the free online webpage to pdf converter
For converting a webpage into pdf just click here , then enter the webpage address which you want to convert in the space given for entering url , and click Convert to PDF , now you will get a pdf file , save it in your computer and view it when ever you like .
The output will be like this:-
There is dedicated web site for this http://www.web2pdfconvert.com which also has add-ons for browsers. They allow to save web pages directly from internet browsers.