Add Button 'Save Blogger Post As Pdf' Blogger

How to add 'save As Pdf Button' in each blogger post of your blogger so as the readers can save your post in pdf format which they like.This tool will really help your readers in saving your post they like.I am vey happy to post this button as i m sure my readers will like this for sure as is very useful.After this post i will post an trick 'how to save any blogger all posts as pdf too' i.e to