In this post i am going to teach you all on editing a wesite or webpage
This trick is done using  javascript.
Note that the changes are temporery and it may disappear when you reload that page.


Copy and paste code given below and paste it in the address bar.
then click enter

code:

javascript:   nick=document.body;nick.contentEditable='true'; document.designMode='on'; void(0)

click here to try this now in google.com