How can I save an HTML string to a Bitmap \ Image?

I made a program that converts an image to ASCII based webpage.

http://postimage.org/image/2pi49sa4k/

That image was rendered开发者_如何学C using Chrome, on 50% size (miminal).

Obviously, I can make it myself because the code is only based on the FONT tag,

but I believe that it'll make things more complicated, as I'm not too good with graphics etc.

I would like to know how I can convert that string to a Bitmap or Image, with some parameters.(like size etc)

Thank you !