I'd ike to render a web page into an image

Hi, everybody,

I’d like to transform a web page into an image without using the stamp key on my keyboard because it shows the head of the page and I’d like to avoid it (if it’s possible…).

I found a fullstack page about it:

with a lot of links using JavaScript but I can’t really understand how to use them :3

for example, html2canvas :

http://html2canvas.hertzen.com/

Could someone explain how to do it?

Thanx a lot,

Fab